/* ═══════════════════════════════════════════════════════════════════
   Kitwi — Professional Design System
   Minimalista, fluido, ultra-ligero. Sin frameworks CSS.
   Temas vía Custom Properties. Diseño de alta calidad.
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ─── Theme Variables ────────────────────────────────────────────── */
:root, [data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a28;
    --bg-elevated: #22223a;
    --bg-hover: #262640;
    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #686880;
    --accent: #6c5ce7;
    --accent-hover: #7d6ff0;
    --accent-subtle: #a29bfe;
    --accent-glow: rgba(108, 92, 231, 0.15);
    --accent-glow-strong: rgba(108, 92, 231, 0.25);
    --border: #2a2a3e;
    --border-hover: #3a3a58;
    --border-subtle: #1e1e30;
    --success: #00d68f;
    --success-bg: rgba(0, 214, 143, 0.1);
    --error: #ff6b6b;
    --error-bg: rgba(255, 107, 107, 0.1);
    --warning: #ffa726;
    --warning-bg: rgba(255, 167, 38, 0.1);
    --info: #42a5f5;
    --info-bg: rgba(66, 165, 245, 0.1);
    --diff-delete: rgba(255, 85, 85, 0.15);
    --diff-delete-border: rgba(255, 85, 85, 0.3);
    --diff-insert: rgba(0, 214, 143, 0.15);
    --diff-insert-border: rgba(0, 214, 143, 0.3);
    --diff-equal: rgba(152, 152, 176, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.2);
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 240px;
    --toolbar-height: 64px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
}

[data-theme="light"] {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eeeef5;
    --bg-elevated: #e4e4f0;
    --bg-hover: #e8e8f2;
    --text-primary: #1a1a2e;
    --text-secondary: #5a5a78;
    --text-muted: #9a9ab0;
    --accent: #5b4fd6;
    --accent-hover: #4a3fc0;
    --accent-subtle: #7c73e8;
    --accent-glow: rgba(91, 79, 214, 0.1);
    --accent-glow-strong: rgba(91, 79, 214, 0.18);
    --border: #d0d0e0;
    --border-hover: #b0b0c8;
    --border-subtle: #e4e4f0;
    --success: #00a86b;
    --success-bg: rgba(0, 168, 107, 0.08);
    --error: #d32f2f;
    --error-bg: rgba(211, 47, 47, 0.08);
    --warning: #e65100;
    --warning-bg: rgba(230, 81, 0, 0.08);
    --info: #1565c0;
    --info-bg: rgba(21, 101, 192, 0.08);
    --diff-delete: rgba(211, 47, 47, 0.1);
    --diff-delete-border: rgba(211, 47, 47, 0.25);
    --diff-insert: rgba(0, 168, 107, 0.1);
    --diff-insert-border: rgba(0, 168, 107, 0.25);
    --diff-equal: rgba(90, 90, 120, 0.06);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

[data-theme="dracula"] {
    --bg-primary: #1a1b26;
    --bg-secondary: #21222c;
    --bg-tertiary: #282a36;
    --bg-elevated: #313244;
    --bg-hover: #363849;
    --text-primary: #f8f8f2;
    --text-secondary: #bd93f9;
    --text-muted: #6272a4;
    --accent: #ff79c6;
    --accent-hover: #ff92d0;
    --accent-subtle: #ffb8e0;
    --accent-glow: rgba(255, 121, 198, 0.15);
    --accent-glow-strong: rgba(255, 121, 198, 0.25);
    --border: #3a3b4a;
    --border-hover: #4a4b5e;
    --border-subtle: #2a2b3c;
    --success: #50fa7b;
    --success-bg: rgba(80, 250, 123, 0.1);
    --error: #ff5555;
    --error-bg: rgba(255, 85, 85, 0.1);
    --warning: #f1fa8c;
    --warning-bg: rgba(241, 250, 140, 0.1);
    --info: #8be9fd;
    --info-bg: rgba(139, 233, 253, 0.1);
    --diff-delete: rgba(255, 85, 85, 0.15);
    --diff-delete-border: rgba(255, 85, 85, 0.3);
    --diff-insert: rgba(80, 250, 123, 0.15);
    --diff-insert-border: rgba(80, 250, 123, 0.3);
    --diff-equal: rgba(189, 147, 249, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="nord"] {
    --bg-primary: #2e3440;
    --bg-secondary: #3b4252;
    --bg-tertiary: #434c5e;
    --bg-elevated: #4c566a;
    --bg-hover: #505a6e;
    --text-primary: #eceff4;
    --text-secondary: #d8dee9;
    --text-muted: #81a1c1;
    --accent: #88c0d0;
    --accent-hover: #9ad0e0;
    --accent-subtle: #b0d8e8;
    --accent-glow: rgba(136, 192, 208, 0.15);
    --accent-glow-strong: rgba(136, 192, 208, 0.25);
    --border: #4c566a;
    --border-hover: #5a6480;
    --border-subtle: #3b4252;
    --success: #a3be8c;
    --success-bg: rgba(163, 190, 140, 0.1);
    --error: #bf616a;
    --error-bg: rgba(191, 97, 106, 0.1);
    --warning: #ebcb8b;
    --warning-bg: rgba(235, 203, 139, 0.1);
    --info: #81a1c1;
    --info-bg: rgba(129, 161, 193, 0.1);
    --diff-delete: rgba(191, 97, 106, 0.15);
    --diff-delete-border: rgba(191, 97, 106, 0.3);
    --diff-insert: rgba(163, 190, 140, 0.15);
    --diff-insert-border: rgba(163, 190, 140, 0.3);
    --diff-equal: rgba(216, 222, 233, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.55);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.15);
}

[data-theme="sepia"] {
    --bg-primary: #fbf3e8;
    --bg-secondary: #f5edd9;
    --bg-tertiary: #ede3cc;
    --bg-elevated: #e4d6b8;
    --bg-hover: #dccaa8;
    --text-primary: #3b2f1a;
    --text-secondary: #6b5a3e;
    --text-muted: #a09070;
    --accent: #b8860b;
    --accent-hover: #d4a017;
    --accent-subtle: #e8b830;
    --accent-glow: rgba(184, 134, 11, 0.12);
    --accent-glow-strong: rgba(184, 134, 11, 0.2);
    --border: #d4c8a8;
    --border-hover: #c0b090;
    --border-subtle: #e0d4bc;
    --success: #5b8c5a;
    --success-bg: rgba(91, 140, 90, 0.08);
    --error: #a04040;
    --error-bg: rgba(160, 64, 64, 0.08);
    --warning: #c08520;
    --warning-bg: rgba(192, 133, 32, 0.08);
    --info: #4a6fa5;
    --info-bg: rgba(74, 111, 165, 0.08);
    --diff-delete: rgba(160, 64, 64, 0.1);
    --diff-delete-border: rgba(160, 64, 64, 0.25);
    --diff-insert: rgba(91, 140, 90, 0.1);
    --diff-insert-border: rgba(91, 140, 90, 0.25);
    --diff-equal: rgba(107, 90, 62, 0.06);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

[data-theme="solarized"] {
    --bg-primary: #002b36;
    --bg-secondary: #073642;
    --bg-tertiary: #094250;
    --bg-elevated: #0b5263;
    --bg-hover: #0d5a6e;
    --text-primary: #839496;
    --text-secondary: #93a1a1;
    --text-muted: #586e75;
    --accent: #268bd2;
    --accent-hover: #3a9ee6;
    --accent-subtle: #50b0f0;
    --accent-glow: rgba(38, 139, 210, 0.15);
    --accent-glow-strong: rgba(38, 139, 210, 0.25);
    --border: #165560;
    --border-hover: #1a6a78;
    --border-subtle: #0e4450;
    --success: #859900;
    --success-bg: rgba(133, 153, 0, 0.1);
    --error: #dc322f;
    --error-bg: rgba(220, 50, 47, 0.1);
    --warning: #b58900;
    --warning-bg: rgba(181, 137, 0, 0.1);
    --info: #2aa198;
    --info-bg: rgba(42, 161, 152, 0.1);
    --diff-delete: rgba(220, 50, 47, 0.15);
    --diff-delete-border: rgba(220, 50, 47, 0.3);
    --diff-insert: rgba(133, 153, 0, 0.15);
    --diff-insert-border: rgba(133, 153, 0, 0.3);
    --diff-equal: rgba(131, 148, 150, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ─── Aurora Background ───────────────────────────────────────── */
.aurora-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
    isolation: isolate;
}

.aurora-layer {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    will-change: transform, opacity;
    opacity: 0.4;
    mix-blend-mode: screen;
    transition: opacity var(--transition-slow), background var(--transition-slow);
}

[data-theme="dark"] .aurora-layer-1,
[data-theme="dracula"] .aurora-layer-1,
[data-theme="nord"] .aurora-layer-1,
[data-theme="solarized"] .aurora-layer-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.25), transparent 70%);
    top: -15%;
    left: -10%;
    animation: aurora-drift-1 18s ease-in-out infinite alternate;
}

[data-theme="dark"] .aurora-layer-2,
[data-theme="dracula"] .aurora-layer-2,
[data-theme="nord"] .aurora-layer-2,
[data-theme="solarized"] .aurora-layer-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(66, 165, 245, 0.18), transparent 70%);
    bottom: -10%;
    right: -5%;
    animation: aurora-drift-2 22s ease-in-out infinite alternate;
}

[data-theme="dark"] .aurora-layer-3,
[data-theme="dracula"] .aurora-layer-3,
[data-theme="nord"] .aurora-layer-3,
[data-theme="solarized"] .aurora-layer-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 214, 143, 0.12), transparent 70%);
    top: 50%;
    left: 60%;
    animation: aurora-drift-3 25s ease-in-out infinite alternate;
}

[data-theme="light"] .aurora-layer-1,
[data-theme="sepia"] .aurora-layer-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(91, 79, 214, 0.10), transparent 70%);
    top: -15%;
    left: -10%;
    animation: aurora-drift-1 18s ease-in-out infinite alternate;
}

[data-theme="light"] .aurora-layer-2,
[data-theme="sepia"] .aurora-layer-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(21, 101, 192, 0.08), transparent 70%);
    bottom: -10%;
    right: -5%;
    animation: aurora-drift-2 22s ease-in-out infinite alternate;
}

[data-theme="light"] .aurora-layer-3,
[data-theme="sepia"] .aurora-layer-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 168, 107, 0.06), transparent 70%);
    top: 50%;
    left: 60%;
    animation: aurora-drift-3 25s ease-in-out infinite alternate;
}

@keyframes aurora-drift-1 {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 0.3; }
    33% { transform: translate(80px, -40px) scale(1.05) rotate(5deg); opacity: 0.5; }
    66% { transform: translate(40px, 60px) scale(0.95) rotate(-3deg); opacity: 0.35; }
    100% { transform: translate(-30px, 20px) scale(1.02) rotate(2deg); opacity: 0.45; }
}

@keyframes aurora-drift-2 {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 0.25; }
    33% { transform: translate(-60px, 50px) scale(0.95) rotate(-4deg); opacity: 0.4; }
    66% { transform: translate(30px, -30px) scale(1.08) rotate(6deg); opacity: 0.3; }
    100% { transform: translate(50px, 20px) scale(1.02) rotate(-2deg); opacity: 0.35; }
}

@keyframes aurora-drift-3 {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 0.2; }
    50% { transform: translate(-40px, -50px) scale(1.1) rotate(3deg); opacity: 0.35; }
    100% { transform: translate(40px, 30px) scale(0.92) rotate(-5deg); opacity: 0.25; }
}

@media (prefers-reduced-motion: reduce) {
    .aurora-layer { animation: none !important; opacity: 0.15; }
}

/* ─── Utility Classes ──────────────────────────────────────────── */
.hidden { display: none !important; }

/* ─── Base Elements ─────────────────────────────────────────────── */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    transition: background var(--transition-normal), color var(--transition-normal);
}

#app {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

input, button, select, textarea { font-family: inherit; font-size: inherit; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ─── Theme Transition Global ──────────────────────────────────── */
html, body {
    background: var(--bg-primary);
    transition: background var(--transition-slow), color var(--transition-slow);
}

.app-shell, .layout, .sidebar, .sidebar-header, .sidebar-footer,
.main-content, .toolbar, .tool-viewport {
    transition: background var(--transition-slow),
                color var(--transition-slow),
                border-color var(--transition-slow);
}

.tool-item, .donation-modal, .donation-option, .settings-modal,
.settings-item, .settings-toggle, .donation-developer,
.scanner-file-item, .file-info-card, .converter-controls,
.result-card, .json-result pre, .diff-result, .calc-display,
.calc-btn, .calc-btn-num, .calc-btn-op, .calc-btn-func,
.calc-btn-mem, .calc-btn-mode, .json-col textarea,
.diff-input-col textarea, .input-field, .textarea-field,
.format-select, .settings-btn, .donation-close, .btn-primary,
.btn-secondary, .toast, .settings-about-info, .reset-order-btn,
.tool-list-header, .tool-drag-handle, .github-link, .version-badge,
.privacy-badge, .settings-shortcuts, .shortcut-row, .settings-about,
.settings-section-header, .settings-separator,
.notas-module, .notas-sidebar, .notas-editor, .notas-list-item,
.notas-new-form, .notas-editor-title, .notas-editor-textarea,
.calc-history-panel, .notas-font-btn, .notas-io-btn,
.qr-module, .qr-layout, .qr-controls, .qr-textarea, .qr-preview-area,
.qr-preview-card, .qr-svg-container, .qr-placeholder, .qr-example-btn,
.qr-ec-btn, .qr-color-text, .qr-error-card,
.citation-module, .citation-layout, .citation-form, .citation-style-btn,
.citation-source-btn, .citation-result-card, .citation-result-text,
.citation-result-footer, .citation-empty,
.player-module, .player-main-card, .player-btn, .player-seek-bar,
.player-volume-bar, .player-playlist, .playlist-item, .player-empty,
.player-drop-overlay, .player-drop-content,
.pdf-module, .pdf-mode-tab, .pdf-file-item, .pdf-result-card,
.pdf-text-result, .pdf-text-preview, .pdf-empty,
.chat-connect-panel, .chat-info-cards, .info-card,
.connect-mode-toggle, .signal-url-input, .signal-status,
.code-display, .room-code-short, .room-code-input, .auto-waiting,
.connect-buttons,
.chat-room-bar, .room-badge, .room-input,
.call-btn, .call-btn-active, .call-btn-danger, .call-btn-switch, .call-btn-end, .call-timer,
.call-chat-overlay, .call-chat-messages,
.chat-input-bar, .message-input, .chat-interface,
.message, .message-own, .message-peer, .message-system,
.plugin-marketplace, .plugin-header, .plugin-header h2, .plugin-card,
.plugin-grid, .plugin-card .tool-check,
.lectura-module, .lectura-header, .lectura-header h2,
.lectura-toolbar, .lectura-reading-area, .lectura-empty,
.lectura-search-bar, .lectura-bookmarks-sidebar,
.lectura-highlights-details,
.converter-section-tabs, .slider-control, .slider-label-icon,
.btn-row, .btn-row-inline, .btn-row-wide, .crop-grid,
.url-section-title, .url-section-desc, .url-input-row,
.url-clear-btn,
.url-result-box, .url-result-code, .url-saved-title,
.url-empty-text, .url-list, .url-list-item-inner,
.url-list-code, .url-list-url, .url-list-delete {
    transition: background var(--transition-slow),
                color var(--transition-slow),
                border-color var(--transition-slow),
                box-shadow var(--transition-slow);
}

.theme-toggle {
    transition: background var(--transition-slow),
                border-color var(--transition-slow),
                box-shadow var(--transition-slow),
                color var(--transition-fast);
}

/* ─── Merged Modules (tools stacked vertically) ────────────────── */
.merged-module { margin-bottom: 0; }
.merged-module-separator {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 8px 0;
}

/* ─── App Shell ─────────────────────────────────────────────────── */
.app-shell { width: 100%; height: 100vh; display: flex; }

/* ─── Layout ────────────────────────────────────────────────────── */
.layout {
    display: flex;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
}

/* ─── Sidebar ───────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 0;
    user-select: none;
    transition: background var(--transition-slow), color var(--transition-slow), border-color var(--transition-slow);
    position: relative;
    z-index: 10;
}

.sidebar.dragging-active { cursor: grabbing; }
.sidebar.dragging-active .tool-item { pointer-events: none; }

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-slow), border-color var(--transition-slow);
    display: flex;
    align-items: center;
}

/* Ocultar botones mobile en desktop */
.sidebar-close-btn,
.hamburger-btn {
    display: none;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 34px; height: 34px; display: block; flex-shrink: 0; filter: drop-shadow(0 0 8px var(--accent-glow)); }
.logo-text { display: flex; flex-direction: column; }

.logo-name {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.tool-list { flex: 1; overflow-y: auto; padding: 12px 8px; }

.tool-list-header {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 8px 12px 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tool-list-hint {
    font-size: 0.6rem;
    color: var(--text-muted);
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
    opacity: 0.6;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    font-size: 0.875rem;
    position: relative;
    margin-bottom: 2px;
}

.tool-drag-handle {
    font-size: 1rem;
    line-height: 1;
    color: var(--text-muted);
    opacity: 0.4;
    cursor: grab;
    padding: 6px 2px;
    flex-shrink: 0;
    min-width: 18px;
    text-align: center;
    transition: opacity var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    user-select: none;
    touch-action: none;
}

.tool-item-wrapper:hover .tool-drag-handle { opacity: 0.8; color: var(--text-secondary); }
.tool-drag-handle:hover, .tool-drag-handle:active { opacity: 1 !important; color: var(--accent) !important; transform: scale(1.15); }
.tool-item-wrapper.dragging { opacity: 0.4; transform: scale(0.95); cursor: grabbing; }
.tool-item-wrapper.dragging .tool-drag-handle { cursor: grabbing; opacity: 0.5; }
.tool-item-wrapper.drop-target { position: relative; }

.tool-item-wrapper.drop-target::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 32px;
    right: 8px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    box-shadow: 0 0 8px var(--accent);
    animation: drop-indicator-pulse 0.8s ease-in-out infinite;
    pointer-events: none;
    z-index: 5;
}

@keyframes drop-indicator-pulse {
    0%, 100% { opacity: 0.6; transform: scaleX(1); }
    50% { opacity: 1; transform: scaleX(1.03); }
}

.tool-list-reset { padding: 4px 12px; margin-top: 4px; }

.reset-order-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    padding: 6px 10px;
    border: 1px dashed var(--border);
    background: transparent;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    opacity: 0.6;
}

.reset-order-btn:hover { opacity: 1; border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.tool-item:hover:not(.disabled) { background: var(--bg-tertiary); color: var(--text-primary); transform: translateX(2px); }
.tool-item.active { background: var(--accent-glow); color: var(--accent); font-weight: 600; box-shadow: inset 0 0 0 1px var(--accent-glow-strong); }

.tool-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--accent);
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px var(--accent);
}

.tool-item.disabled { opacity: 0.4; cursor: not-allowed; }
.tool-icon { font-size: 1.1rem; width: 24px; text-align: center; }
.tool-name { flex: 1; }

.tool-badge {
    font-size: 0.6rem;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-muted);
    font-weight: 500;
}

.tool-check { font-size: 0.7rem; color: var(--success); }

.tool-shortcut {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    font-size: 0.6rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--text-muted);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 3px;
    line-height: 1;
    opacity: 0.55;
    transition: opacity var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
    margin-left: 4px;
    flex-shrink: 0;
}

.tool-item:hover .tool-shortcut { opacity: 0.9; color: var(--text-secondary); border-color: var(--border-hover); }
.tool-item.active .tool-shortcut { opacity: 1; color: var(--accent); background: var(--accent-glow); border-color: var(--accent-glow-strong); }

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: background var(--transition-slow), border-color var(--transition-slow), color var(--transition-slow);
    background: var(--bg-secondary);
}

.sidebar-footer-top { display: flex; align-items: center; justify-content: flex-end; margin-bottom: 8px; }

.version-badge { display: flex; align-items: center; gap: 6px; font-size: 0.7rem; color: var(--text-muted); }
.version-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); animation: pulse-dot 2s ease-in-out infinite; }

@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.privacy-badge { font-size: 0.65rem; color: var(--accent); font-weight: 500; letter-spacing: 0.02em; }
.github-link { font-size: 0.65rem; color: var(--text-muted); text-decoration: none; transition: color var(--transition-fast); display: flex; align-items: center; gap: 4px; border: none; background: transparent; cursor: pointer; padding: 0; }
.github-link:hover { color: var(--text-primary); }

/* ─── Main Content ──────────────────────────────────────────────── */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-primary);
}

/* ─── Toolbar ───────────────────────────────────────────────────── */
.toolbar {
    height: var(--toolbar-height);
    min-height: var(--toolbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    transition: background var(--transition-slow), color var(--transition-slow), border-color var(--transition-slow);
    position: relative;
    z-index: 5;
}

.toolbar-left { display: flex; flex-direction: column; gap: 2px; }
.tool-title { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.02em; color: var(--text-primary); }
.tool-description { font-size: 0.75rem; color: var(--text-muted); max-width: 400px; line-height: 1.4; }
.toolbar-right { display: flex; align-items: center; gap: 8px; }

/* ─── Tool Viewport ─────────────────────────────────────────────── */
.tool-viewport {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
    padding: 24px;
    background: var(--bg-primary);
    transition: background var(--transition-slow), color var(--transition-slow);
    position: relative;
}

/* ─── Theme Toggle ──────────────────────────────────────────────── */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    background: var(--bg-hover);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.theme-toggle-icon { font-size: 1rem; transition: transform var(--transition-normal); }
.theme-toggle:hover .theme-toggle-icon { transform: rotate(15deg) scale(1.1); }

/* ─── Toasts ────────────────────────────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
    pointer-events: none;
}

.toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 250px;
    max-width: 350px;
    pointer-events: auto;
    animation: toast-slide-in var(--transition-normal) forwards;
    backdrop-filter: blur(12px);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--error); }
.toast.warning { border-left-color: var(--warning); }
.toast.info { border-left-color: var(--info); }
.toast-closing { animation: toast-fade-out var(--transition-fast) forwards; }

@keyframes toast-slide-in {
    from { opacity: 0; transform: translateX(100%) scale(0.9); }
    to { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toast-fade-out {
    from { opacity: 1; transform: translateX(0) scale(1); }
    to { opacity: 0; transform: translateX(10%) scale(0.95); }
}

.toast-actions { display: flex; align-items: center; gap: 6px; margin-left: auto; flex-shrink: 0; }
.toast-timer { font-size: 0.65rem; color: var(--text-muted); font-family: var(--font-mono); opacity: 0.6; min-width: 20px; text-align: right; }

.toast-close {
    display: flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; border: none; background: transparent;
    color: var(--text-muted); border-radius: 4px; cursor: pointer;
    font-size: 0.7rem; line-height: 1; transition: all var(--transition-fast);
    padding: 0; opacity: 0.5;
}

.toast-close:hover { opacity: 1; background: var(--error-bg); color: var(--error); transform: scale(1.15); }

/* ─── Donate Button ─────────────────────────────────────────────── */
.donate-button {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 14px; border: 1px solid transparent;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white; border-radius: var(--radius-full); cursor: pointer;
    font-size: 0.8rem; font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(238, 90, 36, 0.3);
}

.donate-button:hover { transform: scale(1.05); box-shadow: 0 4px 16px rgba(238, 90, 36, 0.4); }
.donate-button:active { transform: scale(0.97); }
.donate-icon { font-size: 0.9rem; animation: heartbeat 2s ease-in-out infinite; }

@keyframes heartbeat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.15); } }

/* ─── Donation Modal ───────────────────────────────────────────── */
.donation-overlay {
    position: fixed; inset: 0; z-index: 99999;
    background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    animation: donation-fade-in 200ms ease forwards;
}

@keyframes donation-fade-in { from { opacity: 0; } to { opacity: 1; } }

.donation-modal {
    position: relative; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    max-width: 480px; width: 100%; max-height: 90vh; overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: donation-scale-in 250ms cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    padding: 0;
}

.donation-close {
    position: absolute; top: 16px; right: 16px;
    width: 32px; height: 32px; border: none;
    background: var(--bg-tertiary); color: var(--text-muted);
    border-radius: 50%; cursor: pointer; font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast); z-index: 1;
}

.donation-close:hover { background: var(--error-bg); color: var(--error); transform: rotate(90deg); }

.donation-header { text-align: center; padding: 32px 32px 20px; }
.donation-header-icon { font-size: 2.4rem; display: block; margin-bottom: 12px; animation: heartbeat 2s ease-in-out infinite; }
.donation-header h2 { font-size: 1.3rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.donation-subtitle { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }
.donation-body { padding: 0 32px 24px; }
.donation-message { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.donation-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.donation-option { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); transition: all var(--transition-fast); }
.donation-option:hover { border-color: var(--border-hover); box-shadow: var(--shadow-sm); }
.donation-option-icon { font-size: 1.5rem; min-width: 32px; text-align: center; }
.donation-option-text { flex: 1; min-width: 0; }
.donation-option-text strong { display: block; font-size: 0.85rem; color: var(--text-primary); margin-bottom: 2px; }
.donation-option-text p { font-size: 0.75rem; color: var(--text-muted); line-height: 1.4; }
.donation-option-btns { display: flex; gap: 6px; }
.donation-developer { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--accent-glow); border: 1px solid var(--accent-glow-strong); border-radius: var(--radius-md); }
.donation-dev-icon { font-size: 1.5rem; }
.donation-dev-text { flex: 1; min-width: 0; }
.donation-dev-text strong { display: block; font-size: 0.85rem; color: var(--text-primary); }
.donation-dev-text p { font-size: 0.7rem; color: var(--text-muted); line-height: 1.4; }
.donation-dev-link { font-size: 0.75rem; color: var(--accent); text-decoration: none; font-weight: 600; white-space: nowrap; transition: color var(--transition-fast); border: none; background: transparent; cursor: pointer; padding: 0; font-family: inherit; }
.donation-dev-link:hover { color: var(--accent-hover); text-decoration: underline; }
.donation-footer { padding: 16px 32px; border-top: 1px solid var(--border); text-align: center; }
.donation-footer p { font-size: 0.7rem; color: var(--text-muted); line-height: 1.5; }

/* ─── Settings Button (sidebar) ─────────────────────────────── */
.settings-btn {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border: 1px solid var(--border);
    background: var(--bg-tertiary); color: var(--text-muted);
    border-radius: var(--radius-sm); cursor: pointer; font-size: 1rem;
    transition: all var(--transition-fast); position: relative; overflow: hidden;
}

.settings-btn::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at center, var(--accent-glow-strong), transparent 70%);
    opacity: 0; transition: opacity var(--transition-fast);
}

.settings-btn:hover {
    border-color: var(--accent); color: var(--text-primary);
    background: var(--bg-hover); box-shadow: 0 0 0 2px var(--accent-glow);
    transform: rotate(30deg) scale(1.1);
}
.settings-btn:hover::before { opacity: 1; }

/* ─── Settings Modal ─────────────────────────────────────────── */
.settings-modal {
    position: relative; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    max-width: 520px; width: 100%; max-height: 90vh; overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: donation-scale-in 250ms cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.settings-modal::-webkit-scrollbar { width: 6px; }
.settings-modal::-webkit-scrollbar-track { background: transparent; }
.settings-modal::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; transition: background var(--transition-fast); }
.settings-modal::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

.settings-header { text-align: center; padding: 32px 32px 20px; position: relative; overflow: hidden; }

.settings-header::after {
    content: ''; position: absolute; bottom: 0; left: 50%;
    transform: translateX(-50%); width: 60px; height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 2px; opacity: 0.6;
}

.settings-header-icon { font-size: 2rem; display: block; margin-bottom: 10px; animation: settings-icon-float 3s ease-in-out infinite; }

@keyframes settings-icon-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-3px) rotate(-5deg); }
    75% { transform: translateY(2px) rotate(3deg); }
}

.settings-header h2 { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; letter-spacing: -0.02em; }
.settings-subtitle { font-size: 0.8rem; color: var(--text-muted); }
.settings-tabs { display: flex; gap: 4px; padding: 0 32px 0; border-bottom: 1px solid var(--border); margin: 0 0 0; position: relative; }

.settings-tab {
    flex: 1; padding: 10px 12px; border: none; background: transparent;
    color: var(--text-muted); border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    cursor: pointer; font-size: 0.82rem; font-weight: 500;
    transition: color var(--transition-fast), background var(--transition-fast);
    position: relative; overflow: hidden;
}

.settings-tab::before {
    content: ''; position: absolute; inset: 0;
    background: var(--accent-glow); opacity: 0; transition: opacity var(--transition-fast);
}

.settings-tab:hover { color: var(--text-secondary); }
.settings-tab:hover::before { opacity: 1; }
.settings-tab.active { color: var(--accent); font-weight: 600; }
.settings-tab.active::before { opacity: 1; }

.settings-tab.active::after {
    content: ''; position: absolute; bottom: -1px; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-subtle));
    border-radius: 1px 1px 0 0;
    animation: tab-glow 2s ease-in-out infinite;
}

@keyframes tab-glow { 0%, 100% { box-shadow: 0 0 4px var(--accent-glow); } 50% { box-shadow: 0 0 12px var(--accent-glow-strong); } }

.settings-section { padding: 16px 32px; }

/* Settings items */
.settings-item {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 16px; background: var(--bg-tertiary);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    margin-bottom: 8px; transition: all var(--transition-fast);
    position: relative; overflow: hidden;
}

.settings-item::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow-strong), transparent);
    opacity: 0; transition: opacity var(--transition-fast);
}

.settings-item:hover { border-color: var(--accent-glow-strong); transform: translateX(2px); box-shadow: 0 2px 12px var(--accent-glow); }
.settings-item:hover::before { opacity: 1; }

.settings-section > .settings-item:nth-child(1) { animation: settings-item-in 200ms ease both; }
.settings-section > .settings-item:nth-child(2) { animation: settings-item-in 250ms ease both; }
.settings-section > .settings-item:nth-child(3) { animation: settings-item-in 300ms ease both; }
.settings-section > .settings-item:nth-child(4) { animation: settings-item-in 350ms ease both; }
.settings-section > .settings-item:nth-child(5) { animation: settings-item-in 400ms ease both; }
.settings-section > .settings-item:nth-child(6) { animation: settings-item-in 450ms ease both; }
.settings-section > .settings-item:nth-child(7) { animation: settings-item-in 500ms ease both; }
.settings-section > .settings-item:nth-child(8) { animation: settings-item-in 550ms ease both; }
.settings-section > .settings-item:nth-child(9) { animation: settings-item-in 600ms ease both; }
.settings-section > .settings-item:nth-child(10) { animation: settings-item-in 650ms ease both; }

@keyframes settings-item-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.settings-item-left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.settings-item-icon { font-size: 1.2rem; min-width: 28px; text-align: center; transition: transform var(--transition-fast); }
.settings-item:hover .settings-item-icon { transform: scale(1.15); }
.settings-item-text strong { display: block; font-size: 0.85rem; color: var(--text-primary); margin-bottom: 2px; transition: color var(--transition-fast); }
.settings-item:hover .settings-item-text strong { color: var(--accent); }
.settings-item-text p { font-size: 0.72rem; color: var(--text-muted); line-height: 1.4; }

.settings-badge { font-size: 0.6rem; padding: 3px 8px; background: var(--bg-elevated); color: var(--text-muted); border-radius: var(--radius-full); font-weight: 500; white-space: nowrap; border: 1px solid var(--border); }
.settings-badge.premium { background: linear-gradient(135deg, var(--accent-glow), var(--accent-glow-strong)); color: var(--accent); border-color: var(--accent-glow-strong); }

.settings-check { font-size: 0.85rem; color: var(--success); font-weight: 700; animation: check-pop 300ms cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes check-pop { 0% { transform: scale(0); } 60% { transform: scale(1.3); } 100% { transform: scale(1); } }

.settings-theme-btn { flex-shrink: 0; }

/* Volume selector */
.brightness-slider {
    flex: 1; max-width: 180px; -webkit-appearance: none; height: 6px;
    border-radius: 3px; background: var(--bg-tertiary);
    border: 1px solid var(--border); outline: none; cursor: pointer;
}
.brightness-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px;
    border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm); transition: transform var(--transition-fast);
}
.brightness-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-selector { display: flex; gap: 6px; padding: 2px 16px 12px; margin-top: -6px; justify-content: flex-end; }
.volume-btn { display: flex; align-items: center; gap: 4px; padding: 5px 10px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-muted); border-radius: var(--radius-full); cursor: pointer; font-size: 0.72rem; font-weight: 500; transition: all var(--transition-fast); position: relative; overflow: hidden; }
.volume-btn::before { content: ''; position: absolute; inset: 0; background: var(--accent-glow); opacity: 0; transition: opacity var(--transition-fast); }
.volume-btn:hover { border-color: var(--accent); color: var(--text-primary); background: var(--bg-hover); transform: translateY(-1px); box-shadow: 0 2px 8px var(--accent-glow); }
.volume-btn:active { transform: translateY(0); }
.volume-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); font-weight: 600; box-shadow: 0 0 0 1px var(--accent-glow-strong), 0 2px 8px var(--accent-glow); }
.volume-btn-icon { font-size: 0.85rem; }

/* Shortcuts */
.settings-shortcuts { display: flex; flex-direction: column; gap: 2px; }
.shortcut-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-radius: var(--radius-sm); transition: background var(--transition-fast), transform var(--transition-fast); }
.shortcut-row:hover { background: var(--bg-tertiary); transform: translateX(3px); }
.shortcut-keys { display: flex; gap: 4px; }

.shortcut-keys kbd {
    display: inline-flex; align-items: center; padding: 4px 9px;
    background: var(--bg-elevated); border: 1px solid var(--border);
    border-radius: 4px; font-family: var(--font-mono); font-size: 0.72rem;
    color: var(--text-secondary); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    min-width: 24px; justify-content: center;
    transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.shortcut-row:hover kbd { border-color: var(--accent-glow-strong); color: var(--text-primary); box-shadow: 0 1px 4px var(--accent-glow); }
.shortcut-desc { font-size: 0.8rem; color: var(--text-secondary); }

/* About section */
.settings-about { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; }
.settings-about-logo { margin-bottom: 4px; position: relative; }

.settings-about-logo::after {
    content: ''; position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%); width: 80px; height: 80px;
    background: radial-gradient(circle, var(--accent-glow-strong), transparent 70%);
    border-radius: 50%; z-index: -1;
    animation: about-glow-pulse 3s ease-in-out infinite;
}

@keyframes about-glow-pulse { 0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; } 50% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; } }

.settings-about-icon { width: 64px; height: 64px; display: block; filter: drop-shadow(0 0 16px var(--accent-glow)); animation: about-icon-bob 4s ease-in-out infinite; }
@keyframes about-icon-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }

.settings-about h3 { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.settings-about-tagline { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 500; }
.settings-about-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; max-width: 320px; margin: 4px 0 12px; }
.settings-about-info { width: 100%; max-width: 320px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }

.about-info-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; font-size: 0.78rem; color: var(--text-muted); border-bottom: 1px solid var(--border-subtle); transition: background var(--transition-fast); }
.about-info-row:hover { background: var(--bg-hover); }
.about-info-row:last-child { border-bottom: none; }
.about-info-value { color: var(--text-secondary); font-weight: 500; transition: color var(--transition-fast); }
.about-info-row:hover .about-info-value { color: var(--accent); }

.settings-about-links { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--text-muted); margin-top: 8px; padding: 8px 16px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-full); transition: border-color var(--transition-fast); }
.settings-about-links:hover { border-color: var(--border-hover); }
.settings-about-links a, .settings-about-link-btn { color: var(--accent); text-decoration: none; font-weight: 500; transition: color var(--transition-fast); border: none; background: transparent; cursor: pointer; padding: 0; font-size: inherit; font-family: inherit; }
.settings-about-links a:hover, .settings-about-link-btn:hover { color: var(--accent-hover); text-decoration: underline; }
.about-link-sep { opacity: 0.4; }

.settings-update { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.settings-update .settings-about-link-btn { padding: 8px 16px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-full); font-size: 0.8rem; transition: all var(--transition-fast); }
.settings-update .settings-about-link-btn:hover { border-color: var(--accent); background: var(--accent-glow); text-decoration: none; }

.settings-footer { padding: 14px 32px; border-top: 1px solid var(--border); text-align: center; background: var(--bg-tertiary); border-radius: 0 0 var(--radius-xl) var(--radius-xl); }
.settings-footer p { font-size: 0.65rem; color: var(--text-muted); line-height: 1.5; }

.settings-btn:focus-visible, .settings-tab:focus-visible,
.settings-item button:focus-visible, .settings-about-links a:focus-visible, .settings-about-link-btn:focus-visible, .donation-dev-link:focus-visible, .github-link:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}

/* Tema toggle dentro de settings */
.settings-item .settings-theme-btn { padding: 8px 16px; font-size: 0.85rem; gap: 8px; }

/* ═══════════════════════════════════════════════════════════════════
   Call UI — Voice & Video Calling Styles
   Diseñado para el modulo de Chat P2P
   ═══════════════════════════════════════════════════════════════════ */

.call-ui {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 12px;
}

.call-video-container {
    position: relative;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.call-video-active {
    min-height: 360px;
}

.call-remote-area {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.call-video-remote {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: #000;
}

.call-audio-only {
    min-height: 200px;
}

.call-audio-avatar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 32px;
    animation: call-pulse 2s ease-in-out infinite;
}

@keyframes call-pulse {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.call-audio-icon {
    font-size: 4rem;
    filter: drop-shadow(0 0 20px var(--accent-glow-strong));
    animation: call-icon-wave 1.5s ease-in-out infinite;
}

@keyframes call-icon-wave {
    0%, 100% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(-10deg) scale(1.05); }
    75% { transform: rotate(10deg) scale(1.05); }
}

.call-audio-text {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.call-local-pip {
    position: absolute;
    bottom: 72px;
    right: 12px;
    width: 140px;
    height: 105px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 2;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.call-local-pip:hover {
    transform: scale(1.05);
    border-color: var(--accent);
}

.call-video-local {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.call-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.call-timer {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
}

.call-controls-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.call-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.call-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle at center, var(--accent-glow), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.call-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.call-btn:hover::after {
    opacity: 1;
}

.call-btn:active {
    transform: scale(0.95);
}

.call-btn-active {
    background: var(--error-bg) !important;
    color: var(--error) !important;
    box-shadow: 0 0 0 2px var(--error) !important;
    animation: call-btn-alert 1.5s ease-in-out infinite;
}

@keyframes call-btn-alert {
    0%, 100% { box-shadow: 0 0 0 2px var(--error); }
    50% { box-shadow: 0 0 0 4px var(--error-bg), 0 0 12px var(--error); }
}

.call-btn-end {
    background: var(--error) !important;
    color: white !important;
    font-size: 1.3rem;
}

.call-btn-end:hover {
    background: #ff4444 !important;
    box-shadow: 0 0 16px var(--error) !important;
}

/* ─── Botón de cambio de cámara ─────────────────────────────────── */
.call-btn-switch {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 10px 18px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.call-btn-switch:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.1);
    box-shadow: 0 0 12px var(--accent-glow-strong);
}

/* ─── Chat durante llamada ───────────────────────────────────── */
.call-chat-overlay {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

.call-chat-messages {
    min-height: 120px;
    max-height: 200px;
}

/* ─── Botones de iniciar llamada ────────────────────────────── */
.call-buttons-group {
    display: flex;
    gap: 6px;
    align-items: center;
}

.call-init-btn {
    padding: 6px 12px !important;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    gap: 6px !important;
    white-space: nowrap;
}

.call-negotiating-badge {
    font-size: 0.75rem;
    color: var(--warning);
    font-weight: 500;
    animation: call-negotiating-pulse 1s ease-in-out infinite;
    display: flex;
    align-items: center;
    gap: 4px;
}

@keyframes call-negotiating-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ─── Chat room bar adjustments for call buttons ─────────────── */
.chat-room-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.room-badge {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: auto;
}

.btn-small {
    padding: 4px 10px;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

/* ─── Settings Section Header ──────────────────────────────────── */
.settings-section-header { display: flex; align-items: center; gap: 8px; margin: 16px 0 6px; font-size: 0.85rem; color: var(--text-primary); padding: 0 4px; }
.settings-section-icon { font-size: 1rem; }
.settings-section-desc { font-size: 0.72rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 10px; padding: 0 4px; }

/* ─── Settings Toggle Switch ──────────────────────────────────── */
.settings-toggle { flex-shrink: 0; display: flex; align-items: center; width: 48px; height: 26px; padding: 0; border: none; background: var(--bg-elevated); border-radius: 13px; cursor: pointer; position: relative; transition: background var(--transition-slow), box-shadow var(--transition-slow); }
.settings-toggle:active .settings-toggle-thumb { transform: scale(0.85); }
.settings-toggle.active:active .settings-toggle-thumb { transform: translateX(22px) scale(0.85); }
.settings-toggle.active { background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.settings-toggle-track { position: relative; width: 100%; height: 100%; }

.settings-toggle-thumb { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--text-secondary); transition: transform 480ms cubic-bezier(0.34, 1.56, 0.64, 1), background var(--transition-slow); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25); }
.settings-toggle.active .settings-toggle-thumb { transform: translateX(22px); background: white; }
.settings-toggle:hover { box-shadow: 0 0 6px var(--accent-glow); }
.settings-toggle:hover .settings-toggle-thumb { box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); }

/* ─── Settings Separator ──────────────────────────────────────── */
.settings-separator { height: 1px; background: var(--border-subtle); margin: 12px 0; }

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn-primary {
    display: flex; align-items: center; justify-content: center;
    gap: 8px; padding: 10px 20px; border: none;
    background: var(--accent); color: white;
    border-radius: var(--radius-md); cursor: pointer; font-weight: 600;
    font-size: 0.875rem; transition: all var(--transition-fast);
    box-shadow: 0 2px 8px var(--accent-glow); position: relative; overflow: hidden;
}

.btn-primary::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent); pointer-events: none; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow-strong); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    display: flex; align-items: center; justify-content: center;
    gap: 8px; padding: 10px 20px; border: 1px solid var(--border);
    background: var(--bg-tertiary); color: var(--text-secondary);
    border-radius: var(--radius-md); cursor: pointer; font-weight: 500;
    font-size: 0.875rem; transition: all var(--transition-fast);
}

.btn-secondary:hover { border-color: var(--accent); color: var(--text-primary); background: var(--bg-hover); }

.btn-ghost { display: flex; align-items: center; justify-content: center; padding: 8px; border: none; background: transparent; color: var(--text-secondary); border-radius: var(--radius-sm); cursor: pointer; font-size: 1.1rem; transition: all var(--transition-fast); }
.btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.btn-small { padding: 4px 10px; font-size: 0.75rem; }
.btn-icon { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border: none; background: transparent; color: var(--text-muted); border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast); font-size: 1rem; }
.btn-icon:hover { background: var(--error-bg); color: var(--error); }

/* ─── Inputs / Textareas ────────────────────────────────────────── */
.input-field { width: 100%; padding: 10px 14px; border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-primary); border-radius: var(--radius-md); font-size: 0.9rem; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); line-height: 1.5; }
.input-field:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.input-field::placeholder { color: var(--text-muted); }

.textarea-field { width: 100%; padding: 12px 14px; border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-primary); border-radius: var(--radius-md); font-size: 0.9rem; font-family: var(--font-mono); resize: vertical; min-height: 80px; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); line-height: 1.5; }
.textarea-field:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.textarea-field::placeholder { color: var(--text-muted); font-family: var(--font-sans); }

/* ─── Converter Module ──────────────────────────────────────────── */
.converter-module { max-width: 720px; margin: 0 auto; }
.converter-header { margin-bottom: 24px; }
.converter-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.module-info { font-size: 0.8rem; color: var(--text-muted); }

.drop-zone { border: 2px dashed var(--border); border-radius: var(--radius-lg); padding: 60px 40px; text-align: center; cursor: pointer; transition: all var(--transition-normal); background: var(--bg-secondary); position: relative; overflow: hidden; }
.drop-zone::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at center, var(--accent-glow), transparent 70%); opacity: 0; transition: opacity var(--transition-normal); pointer-events: none; }
.drop-zone:hover::before { opacity: 1; }
.drop-zone:hover { border-color: var(--accent); background: var(--bg-secondary); box-shadow: var(--shadow-glow); transform: scale(1.01); }
.drop-zone-content { display: flex; flex-direction: column; align-items: center; gap: 12px; position: relative; z-index: 1; }
.drop-icon { font-size: 3rem; opacity: 0.8; transition: transform var(--transition-normal); }
.drop-zone:hover .drop-icon { transform: scale(1.1) translateY(-4px); }
.drop-text { font-size: 1rem; color: var(--text-secondary); font-weight: 500; }
.drop-hint { font-size: 0.8rem; color: var(--text-muted); }
.file-input-hidden { display: none; }
.converter-workspace { display: flex; flex-direction: column; gap: 20px; }

.file-info-card { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); transition: all var(--transition-normal); }
.file-info-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-sm); }
.file-icon { font-size: 1.5rem; }
.file-details { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.file-name { font-weight: 600; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-size { font-size: 0.75rem; color: var(--text-muted); }

.converter-controls { display: flex; flex-direction: column; gap: 16px; padding: 20px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); transition: all var(--transition-normal); box-shadow: var(--shadow-sm); }
.control-group { display: flex; flex-direction: column; gap: 6px; }
.control-group label { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }

.converter-controls .brightness-slider {
    flex: 1; -webkit-appearance: none; appearance: none; height: 6px;
    border-radius: 3px; background: linear-gradient(90deg, var(--accent-glow-strong), var(--accent), var(--accent-glow-strong));
    outline: none; cursor: pointer;
    transition: opacity var(--transition-fast);
}
.converter-controls .brightness-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 20px; height: 20px;
    border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm); transition: transform var(--transition-fast);
}
.converter-controls .brightness-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
.converter-controls .brightness-slider::-moz-range-thumb {
    width: 20px; height: 20px;
    border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}
.brightness-value {
    min-width: 36px; font-size: 0.78rem; font-weight: 600;
    font-family: var(--font-mono); color: var(--accent);
    text-align: center; padding: 2px 6px;
    background: var(--accent-glow); border-radius: var(--radius-sm);
}

.format-warning {
    display: flex; align-items: center; gap: 8px; padding: 8px 12px;
    background: var(--warning-bg); border: 1px solid var(--warning);
    border-radius: var(--radius-sm); font-size: 0.75rem;
    color: var(--warning); line-height: 1.4; animation: slideUp var(--transition-fast);
}
.format-warning-icon { font-size: 0.9rem; flex-shrink: 0; }

/* ─── Converter — New Filters (contrast, saturation, rotate, flip) ── */
.converter-controls details {
    margin-top: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    background: var(--bg-tertiary);
    transition: border-color var(--transition-fast);
}
.converter-controls details[open] { border-color: var(--accent-glow-strong); }
.converter-controls summary {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    padding: 4px 0;
    user-select: none;
    transition: color var(--transition-fast);
}
.converter-controls summary:hover { color: var(--accent-hover); }
.converter-controls details > div {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 10px 4px 4px;
}

.filter-slider-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.filter-slider-group label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}
.filter-slider-group label span {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    font-weight: 600;
}
.filter-slider {
    -webkit-appearance: none;
    appearance: none;
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent-glow-strong), var(--accent), var(--accent-glow-strong));
    outline: none;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}
.filter-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}
.filter-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.filter-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.rotate-btn-group, .flip-btn-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.filter-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 7px 14px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    min-width: 36px;
}
.filter-action-btn:hover {
    border-color: var(--accent-glow-strong);
    background: var(--bg-hover);
    color: var(--text-primary);
    box-shadow: 0 0 0 1px var(--accent-glow);
}
.filter-action-btn.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
    box-shadow: 0 0 0 1px var(--accent-glow-strong);
}
.filter-action-btn:active { transform: scale(0.95); }

.crop-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.crop-input-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.crop-input-group label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}
.crop-input-group input {
    padding: 7px 10px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-family: var(--font-mono);
    width: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.crop-input-group input:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.format-select { padding: 10px 12px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm); font-size: 0.9rem; cursor: pointer; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); appearance: none; background-image: url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23686880' d='M2 4l4 4 4-4'/%3E%3C/svg%3E\"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.format-select:hover, .format-select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }

.quality-slider { -webkit-appearance: none; width: 100%; height: 6px; border-radius: 3px; background: var(--bg-tertiary); border: 1px solid var(--border); outline: none; transition: background var(--transition-fast); }
.quality-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--accent); cursor: pointer; border: 2px solid var(--bg-secondary); box-shadow: var(--shadow-sm); transition: transform var(--transition-fast); }
.quality-slider::-webkit-slider-thumb:hover { transform: scale(1.2); box-shadow: 0 0 12px var(--accent-glow); }

.result-card { padding: 20px; background: var(--bg-secondary); border: 1px solid var(--success); border-radius: var(--radius-md); display: flex; flex-direction: column; gap: 16px; animation: slideUp var(--transition-normal); box-shadow: 0 0 20px var(--success-bg); }
@keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.result-header { display: flex; align-items: center; justify-content: space-between; }
.result-header h3 { font-size: 1rem; font-weight: 600; color: var(--success); }
.result-size { font-size: 0.8rem; color: var(--text-muted); font-family: var(--font-mono); }
.result-actions { display: flex; gap: 10px; }

.error-message { padding: 10px 14px; background: var(--error-bg); border: 1px solid var(--error); border-radius: var(--radius-sm); color: var(--error); font-size: 0.8rem; display: flex; align-items: flex-start; gap: 8px; animation: slideUp var(--transition-fast); max-height: 80px; overflow-y: auto; word-break: break-word; line-height: 1.4; }
.error-text { flex: 1; min-width: 0; }
.error-close { display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; border: none; background: transparent; color: var(--error); border-radius: 4px; cursor: pointer; font-size: 0.8rem; line-height: 1; transition: all var(--transition-fast); padding: 0; flex-shrink: 0; opacity: 0.7; }
.error-close:hover { opacity: 1; background: rgba(255, 107, 107, 0.2); transform: scale(1.15); }
.error-close:active { transform: scale(0.9); }

/* ─── Diff Module ──────────────────────────────────────────────── */
.diff-module { display: flex; flex-direction: column; gap: 20px; height: 100%; max-width: 960px; margin: 0 auto; }
.diff-header { margin-bottom: 4px; }
.diff-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.diff-inputs { display: flex; gap: 16px; height: 40vh; min-height: 200px; }
.diff-input-col { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.diff-input-col label { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.diff-input-col textarea { flex: 1; resize: none; padding: 14px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-primary); font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
.diff-input-col textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.diff-input-col textarea::placeholder { color: var(--text-muted); font-family: var(--font-sans); }
.diff-result { flex: 1; overflow-y: auto; background: var(--bg-secondary); border-radius: var(--radius-md); padding: 16px; border: 1px solid var(--border); font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; white-space: pre-wrap; word-break: break-all; box-shadow: var(--shadow-inner); }
.diff-container { display: flex; flex-direction: column; }
.diff-container > div { padding: 1px 8px; border-radius: 2px; transition: background var(--transition-fast); }
.diff-delete { background: var(--diff-delete); border-left: 3px solid var(--error); color: var(--error); margin: 1px 0; }
.diff-insert { background: var(--diff-insert); border-left: 3px solid var(--success); color: var(--success); margin: 1px 0; }
.diff-equal { color: var(--text-secondary); opacity: 0.7; }
.diff-prefix { user-select: none; padding-right: 12px; opacity: 0.5; font-weight: 700; }
.diff-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 200px; gap: 12px; color: var(--text-muted); border: 1px dashed var(--border); border-radius: var(--radius-md); }

/* ─── JSON Module ──────────────────────────────────────────────── */
.json-module { display: flex; flex-direction: column; gap: 16px; height: 100%; max-width: 960px; margin: 0 auto; }
.json-header { margin-bottom: 4px; }
.json-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.json-inputs { display: flex; gap: 16px; flex: 1; min-height: 400px; }
.json-col { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.json-col label { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.json-col textarea { flex: 1; resize: none; padding: 14px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-primary); font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
.json-col textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.json-col textarea::placeholder { color: var(--text-muted); font-family: var(--font-sans); }
.json-result { flex: 1; position: relative; display: flex; flex-direction: column; }
.json-result pre { flex: 1; overflow-y: auto; background: var(--bg-secondary); border-radius: var(--radius-md); padding: 16px; margin: 0; border: 1px solid var(--border); font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; color: var(--text-secondary); box-shadow: var(--shadow-inner); }
.json-error { padding: 12px 16px; background: var(--error-bg); color: var(--error); border-radius: var(--radius-md); border: 1px solid var(--error); margin-bottom: 8px; font-size: 0.85rem; animation: slideUp var(--transition-fast); }
.json-copy-btn { position: absolute; top: 36px; right: 12px; background: var(--bg-elevated); border: 1px solid var(--border); color: var(--text-primary); padding: 6px 14px; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast); font-size: 0.78rem; font-weight: 500; }
.json-copy-btn:hover { background: var(--accent); border-color: var(--accent); color: white; box-shadow: 0 2px 8px var(--accent-glow); }
.json-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 200px; gap: 12px; color: var(--text-muted); border: 1px dashed var(--border); border-radius: var(--radius-md); }

/* ═══════════════════════════════════════════════════════════════════
   Password Generator — JSON tab
   ═══════════════════════════════════════════════════════════════════ */

.pass-gen-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    animation: slideUp var(--transition-normal);
}

.pass-gen-options {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.pass-gen-option {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pass-gen-option label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-fast);
    flex: 1;
}

.pass-gen-option label:hover { color: var(--text-primary); }

.pass-gen-length-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pass-gen-length-row label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 70px;
}

.pass-gen-length-row input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent-glow-strong), var(--accent));
    outline: none;
    cursor: pointer;
}

.pass-gen-length-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.pass-gen-length-row input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

.pass-gen-length-row input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.pass-gen-length-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    min-width: 24px;
    text-align: center;
}

.pass-gen-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pass-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    user-select: none;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.pass-checkbox-label:hover {
    border-color: var(--accent-glow-strong);
    color: var(--text-primary);
    background: var(--bg-hover);
}

.pass-checkbox-label.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 500;
}

.pass-checkbox-label input { display: none; }

.pass-gen-result {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pass-gen-password {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    word-break: break-all;
    min-height: 50px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: var(--shadow-inner);
}

.pass-gen-password.has-password {
    border-color: var(--accent-glow-strong);
    box-shadow: var(--shadow-glow);
}

.pass-gen-password .placeholder {
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-style: italic;
}

.pass-gen-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.pass-gen-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pass-gen-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    background: var(--bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.pass-gen-btn:active { transform: translateY(0); }

.pass-gen-btn.primary {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.pass-gen-btn.primary:hover {
    background: var(--accent-glow-strong);
    border-color: var(--accent-hover);
    color: var(--accent-hover);
}

/* Strength meter */
.strength-meter {
    display: flex;
    gap: 4px;
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.strength-bar {
    flex: 1;
    border-radius: 3px;
    transition: background var(--transition-normal);
}

.strength-bar.filled.weak { background: var(--error); }
.strength-bar.filled.medium { background: var(--warning); }
.strength-bar.filled.strong { background: var(--success); }
.strength-bar.filled.very-strong { background: var(--accent); }

.strength-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
    transition: color var(--transition-fast);
}

.strength-label.weak { color: var(--error); }
.strength-label.medium { color: var(--warning); }
.strength-label.strong { color: var(--success); }
.strength-label.very-strong { color: var(--accent); }

/* ─── Scanner Module ──────────────────────────────────────────── */
.scanner-module { max-width: 800px; margin: 0 auto; }
.scanner-header { margin-bottom: 24px; }
.scanner-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.scanner-mode-tabs { display: flex; gap: 6px; margin-bottom: 8px; }
.scanner-mode-tab { display: flex; align-items: center; gap: 6px; padding: 8px 16px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-muted); border-radius: var(--radius-full); cursor: pointer; font-size: 0.82rem; font-weight: 500; transition: all var(--transition-fast); }
.scanner-mode-tab:hover { border-color: var(--accent); color: var(--text-primary); }
.scanner-mode-tab.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.scanner-upload-area { border: 2px dashed var(--border); border-radius: var(--radius-lg); padding: 40px; text-align: center; cursor: pointer; transition: all var(--transition-normal); background: var(--bg-secondary); margin-bottom: 16px; }
.scanner-upload-area:hover { border-color: var(--accent); background: var(--bg-secondary); box-shadow: var(--shadow-glow); }
.scanner-preview { display: flex; flex-direction: column; gap: 16px; }
.scanner-preview img { max-width: 100%; border-radius: var(--radius-md); border: 1px solid var(--border); }
.scanner-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.scanner-file-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 8px; }
.scanner-file-icon { font-size: 1.3rem; }
.scanner-file-info { flex: 1; display: flex; flex-direction: column; }
.scanner-file-name { font-weight: 500; font-size: 0.85rem; }
.scanner-file-size { font-size: 0.7rem; color: var(--text-muted); }

/* ─── Calculator Module ──────────────────────────────────────────── */
.calc-module { max-width: 360px; margin: 0 auto; }
.calc-header { margin-bottom: 8px; }
.calc-header h2 { font-size: 1.1rem; font-weight: 600; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }

.calc-display { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; margin-bottom: 8px; text-align: right; min-height: 80px; display: flex; flex-direction: column; justify-content: flex-end; box-shadow: var(--shadow-inner); }

.calc-expression { font-size: 0.85rem; color: var(--text-muted); font-family: var(--font-mono); min-height: 24px; word-break: break-all; transition: color var(--transition-fast); }
.calc-result { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); font-family: var(--font-mono); line-height: 1.2; }
.calc-result.error { color: var(--error); }

.calc-grid { display: flex; flex-direction: column; gap: 6px; }
.calc-row-mem { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-bottom: 6px; }
.calc-btn-mem, .calc-btn-mode { height: 34px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-sm); cursor: pointer; font-size: 0.78rem; font-weight: 600; transition: all var(--transition-fast); }
.calc-btn-mem:hover, .calc-btn-mode:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--accent); }

.calc-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.calc-row-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.calc-row-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }

.calc-btn { height: 48px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm); cursor: pointer; font-size: 1.05rem; font-weight: 600; transition: all var(--transition-fast); font-family: var(--font-sans); }
.calc-btn:hover { background: var(--bg-hover); border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 2px 8px var(--accent-glow); }
.calc-btn:active { transform: translateY(0); }
.calc-btn-num { background: var(--bg-secondary); font-weight: 700; }
.calc-btn-num:hover { background: var(--bg-hover); border-color: var(--accent); }
.calc-btn-op { background: var(--bg-elevated); color: var(--accent); }
.calc-btn-op:hover { background: var(--accent-glow); border-color: var(--accent); }
.calc-btn-func { font-size: 0.78rem; font-weight: 500; }
.calc-btn-eq { background: var(--accent); color: white; border-color: var(--accent); }
.calc-btn-eq:hover { background: var(--accent-hover); box-shadow: 0 2px 12px var(--accent-glow); }
.calc-btn-clear { color: var(--error); }
.calc-btn-clear:hover { background: var(--error-bg); border-color: var(--error); color: var(--error); }
.calc-btn-mem-active { color: var(--accent); background: var(--accent-glow); border-color: var(--accent-glow-strong); }

.calc-history-panel { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 12px; margin-top: 8px; max-height: 160px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.calc-history-title { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; font-weight: 600; }
.calc-history-item { padding: 4px 8px; font-size: 0.8rem; color: var(--text-secondary); font-family: var(--font-mono); border-radius: 4px; cursor: pointer; transition: background var(--transition-fast); }
.calc-history-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }

.col-span-2 { grid-column: span 2; }

/* ─── Notas Module ──────────────────────────────────────────────── */
.notas-module { display: flex; flex-direction: column; gap: 16px; height: 100%; max-width: 960px; margin: 0 auto; }

.notas-header { margin-bottom: 4px; }
.notas-header h2 { font-size: 1.3rem; font-weight: 600; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }

.notas-layout { display: flex; gap: 16px; flex: 1; min-height: 400px; }

/* Sidebar de notas */
.notas-sidebar { width: 240px; min-width: 240px; display: flex; flex-direction: column; gap: 8px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.notas-sidebar-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--bg-tertiary); }
.notas-count { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.notas-sidebar-actions { display: flex; gap: 4px; }
.notas-io-btn { width: 26px; height: 26px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-muted); border-radius: 4px; cursor: pointer; font-size: 0.8rem; display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.notas-io-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

.notas-list { flex: 1; overflow-y: auto; padding: 4px; }
.notas-list-item { display: flex; align-items: center; gap: 8px; padding: 10px; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast); border: 1px solid transparent; margin-bottom: 2px; }
.notas-list-item:hover { background: var(--bg-tertiary); border-color: var(--border); }
.notas-list-item.active { background: var(--accent-glow); border-color: var(--accent-glow-strong); }
.notas-list-item-icon { font-size: 1rem; flex-shrink: 0; }
.notas-list-item-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.notas-list-item-title { font-size: 0.82rem; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notas-list-item-preview { font-size: 0.7rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notas-delete-btn { width: 22px; height: 22px; border: none; background: transparent; color: var(--text-muted); border-radius: 4px; cursor: pointer; font-size: 0.7rem; display: flex; align-items: center; justify-content: center; opacity: 0; transition: all var(--transition-fast); flex-shrink: 0; }
.notas-list-item:hover .notas-delete-btn { opacity: 1; }
.notas-delete-btn:hover { background: var(--error-bg); color: var(--error); }

.notas-empty-msg { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 20px; gap: 8px; color: var(--text-muted); }
.notas-empty-icon { font-size: 2rem; opacity: 0.5; }
.notas-empty-msg p { font-size: 0.85rem; }

/* Editor de notas */
.notas-editor { flex: 1; display: flex; flex-direction: column; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.notas-editor-content { display: flex; flex-direction: column; height: 100%; }
.notas-editor-title { width: 100%; padding: 14px 16px; border: none; border-bottom: 1px solid var(--border); background: transparent; color: var(--text-primary); font-size: 1.1rem; font-weight: 600; outline: none; }
.notas-editor-title:focus { box-shadow: inset 0 -2px 0 var(--accent); }
.notas-editor-title::placeholder { color: var(--text-muted); font-weight: 400; }

.notas-editor-meta { display: flex; align-items: center; justify-content: space-between; padding: 6px 16px; border-bottom: 1px solid var(--border-subtle); background: var(--bg-tertiary); }
.notas-editor-date { font-size: 0.7rem; color: var(--text-muted); }
.notas-editor-meta-right { display: flex; align-items: center; gap: 8px; }
.notas-editor-word-count { font-size: 0.7rem; color: var(--text-muted); }
.notas-font-btn { width: 24px; height: 24px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-muted); border-radius: 4px; cursor: pointer; font-size: 0.75rem; font-weight: 700; display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.notas-font-btn:hover { border-color: var(--accent); color: var(--accent); }
.notas-font-btn.mono { background: var(--accent-glow); border-color: var(--accent-glow-strong); color: var(--accent); }

.notas-editor-textarea { flex: 1; width: 100%; padding: 16px; border: none; background: transparent; color: var(--text-primary); font-family: var(--font-sans); font-size: 0.92rem; line-height: 1.7; resize: none; outline: none; min-height: 200px; }
.notas-editor-textarea:focus { box-shadow: inset 0 0 0 1px var(--accent-glow); }
.notas-editor-textarea::placeholder { color: var(--text-muted); }
.notas-editor-textarea.notas-editor-mono { font-family: var(--font-mono); font-size: 0.85rem; }
.notas-editor-empty { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: var(--text-muted); }
.notas-editor-empty .notas-empty-icon { font-size: 2.5rem; }

/* Formulario nueva nota */
.notas-new-form { display: flex; flex-direction: column; gap: 10px; padding: 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); }
.notas-new-title { font-size: 0.85rem; color: var(--text-primary); font-weight: 600; }
.notas-new-input { width: 100%; padding: 10px 14px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm); font-size: 0.9rem; outline: none; transition: border-color var(--transition-fast); }
.notas-new-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.notas-new-input::placeholder { color: var(--text-muted); }
.notas-new-textarea { width: 100%; padding: 10px 14px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm); font-size: 0.9rem; resize: vertical; min-height: 80px; outline: none; font-family: var(--font-sans); line-height: 1.5; transition: border-color var(--transition-fast); }
.notas-new-textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.notas-new-textarea::placeholder { color: var(--text-muted); }

/* ─── Citation Module ────────────────────────────────────────────── */
.citation-module { max-width: 960px; margin: 0 auto; }
.citation-header { margin-bottom: 20px; }
.citation-header h2 {
    font-size: 1.3rem; font-weight: 600; margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}
.citation-layout { display: grid; grid-template-columns: 1fr 380px; gap: 24px; align-items: start; }

.citation-form { display: flex; flex-direction: column; gap: 20px; }

.citation-style-selector { display: flex; flex-direction: column; gap: 8px; }
.citation-style-selector label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.citation-style-options { display: flex; flex-wrap: wrap; gap: 6px; }
.citation-style-btn {
    display: flex; align-items: center; gap: 4px; padding: 8px 12px;
    border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-secondary);
    border-radius: var(--radius-sm); cursor: pointer; font-size: 0.78rem;
    font-weight: 500; transition: all var(--transition-fast);
}
.citation-style-btn:hover { border-color: var(--accent); color: var(--text-primary); background: var(--accent-glow); }
.citation-style-btn.active { background: var(--accent); color: white; border-color: var(--accent); box-shadow: 0 2px 8px var(--accent-glow); }

.citation-control-group { display: flex; flex-direction: column; gap: 8px; }
.citation-control-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.citation-source-options { display: flex; gap: 6px; flex-wrap: wrap; }
.citation-source-btn {
    display: flex; align-items: center; gap: 4px; padding: 8px 12px;
    border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-secondary);
    border-radius: var(--radius-sm); cursor: pointer; font-size: 0.78rem;
    font-weight: 500; transition: all var(--transition-fast);
}
.citation-source-btn:hover { border-color: var(--accent); color: var(--text-primary); background: var(--accent-glow); }
.citation-source-btn.active { background: var(--accent); color: white; border-color: var(--accent); box-shadow: 0 2px 8px var(--accent-glow); }

.citation-fields { display: flex; flex-direction: column; gap: 14px; }
.citation-field-group { display: flex; flex-direction: column; gap: 6px; }
.citation-field-group label { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }
.citation-field-row { display: flex; gap: 12px; }
.citation-field-row .citation-field-group { flex: 1; }
.citation-hint { font-size: 0.7rem; color: var(--text-muted); }

.citation-actions { display: flex; gap: 10px; margin-top: 4px; }

.citation-output-area { display: flex; flex-direction: column; gap: 16px; }

.citation-result-card { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.citation-result-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px; border-bottom: 1px solid var(--border);
    background: var(--bg-tertiary);
}
.citation-result-header h3 { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.citation-result-body { padding: 16px; }
.citation-result-text {
    font-family: var(--font-sans); font-size: 0.9rem; line-height: 1.7;
    color: var(--text-primary); white-space: pre-wrap; word-wrap: break-word;
    margin: 0; background: var(--bg-primary); padding: 16px;
    border-radius: var(--radius-sm); border: 1px solid var(--border-subtle);
}
.citation-result-footer {
    display: flex; gap: 8px; padding: 10px 16px;
    border-top: 1px solid var(--border-subtle); background: var(--bg-tertiary);
}
.citation-result-style {
    font-size: 0.7rem; padding: 3px 8px; background: var(--accent-glow);
    color: var(--accent); border-radius: var(--radius-full); font-weight: 600;
}
.citation-result-source {
    font-size: 0.7rem; padding: 3px 8px; background: var(--bg-elevated);
    color: var(--text-muted); border-radius: var(--radius-full); font-weight: 500;
}

.citation-empty {
    text-align: center; padding: 60px 40px; background: var(--bg-secondary);
    border: 2px dashed var(--border); border-radius: var(--radius-lg);
    transition: border-color var(--transition-normal);
}
.citation-empty:hover { border-color: var(--border-hover); }
.citation-empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.6; }
.citation-empty h3 { font-size: 1.1rem; color: var(--text-secondary); font-weight: 500; margin-bottom: 8px; }
.citation-empty p { font-size: 0.85rem; color: var(--text-muted); }
.citation-empty-examples { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 8px; }
.citation-empty-examples span { font-size: 0.75rem; color: var(--text-muted); padding: 4px 8px; background: var(--bg-tertiary); border-radius: var(--radius-sm); }

@media (max-width: 768px) {
    .citation-layout { grid-template-columns: 1fr; }
    .citation-field-row { flex-direction: column; gap: 8px; }
}

/* ─── QR Generator Module ──────────────────────────────────────── */
.qr-module { max-width: 960px; margin: 0 auto; }
.qr-header { margin-bottom: 24px; }
.qr-header h2 {
    font-size: 1.3rem; font-weight: 600; margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}
.qr-layout { display: grid; grid-template-columns: 1fr 380px; gap: 24px; align-items: start; }

.qr-controls { display: flex; flex-direction: column; gap: 20px; }
.qr-input-group { display: flex; flex-direction: column; gap: 8px; }
.qr-input-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.qr-textarea {
    width: 100%; padding: 12px 14px; border: 1px solid var(--border);
    background: var(--bg-secondary); color: var(--text-primary); border-radius: var(--radius-md);
    font-size: 0.9rem; font-family: var(--font-mono); resize: vertical; min-height: 80px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast); line-height: 1.5;
}
.qr-textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.qr-textarea::placeholder { color: var(--text-muted); font-family: var(--font-sans); }
.qr-input-footer { display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; }
.qr-chars { color: var(--text-muted); }
.qr-examples { display: flex; flex-direction: column; gap: 8px; }
.qr-examples label { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }
.qr-examples-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.qr-example-btn {
    display: flex; align-items: center; gap: 4px; padding: 6px 10px;
    border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text-secondary);
    border-radius: var(--radius-sm); cursor: pointer; font-size: 0.78rem;
    transition: all var(--transition-fast);
}
.qr-example-btn:hover { border-color: var(--accent); background: var(--accent-glow); color: var(--accent); transform: translateY(-1px); }

.qr-control-group { display: flex; flex-direction: column; gap: 8px; }
.qr-control-group label { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }
.qr-ec-options { display: flex; gap: 6px; }
.qr-ec-btn {
    flex: 1; padding: 8px 6px; border: 1px solid var(--border);
    background: var(--bg-secondary); color: var(--text-secondary); border-radius: var(--radius-sm);
    cursor: pointer; font-size: 0.78rem; font-weight: 500; transition: all var(--transition-fast);
    text-align: center; font-family: var(--font-mono);
}
.qr-ec-btn:hover { border-color: var(--accent); color: var(--text-primary); box-shadow: 0 0 0 2px var(--accent-glow); }
.qr-ec-btn.active { background: var(--accent); color: white; border-color: var(--accent); box-shadow: 0 2px 8px var(--accent-glow); }

.qr-color-picker { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.qr-color-picker label { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }
.qr-color-input-wrapper { display: flex; align-items: center; gap: 8px; }
.qr-color-input { width: 40px; height: 40px; padding: 2px; border: 1px solid var(--border); border-radius: 50%; background: var(--bg-tertiary); cursor: pointer; transition: border-color var(--transition-fast); }
.qr-color-input:hover { border-color: var(--accent); }
.qr-color-text {
    flex: 1; padding: 8px 10px; border: 1px solid var(--border);
    background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm);
    font-size: 0.8rem; font-family: var(--font-mono); transition: border-color var(--transition-fast);
}
.qr-color-text:focus { border-color: var(--accent); outline: none; }

.qr-control-row { display: flex; gap: 12px; }

.qr-size-slider { -webkit-appearance: none; width: 100%; height: 6px; border-radius: 3px; background: var(--bg-tertiary); border: 1px solid var(--border); outline: none; }
.qr-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px;
    border-radius: 50%; background: var(--accent); cursor: pointer;
    border: 2px solid var(--bg-secondary); box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}
.qr-size-slider::-webkit-slider-thumb:hover { transform: scale(1.2); box-shadow: 0 0 12px var(--accent-glow); }

.qr-preview-area { position: sticky; top: 24px; display: flex; flex-direction: column; align-items: center; }
.qr-preview-card { width: 100%; padding: 24px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-lg); display: flex; flex-direction: column; align-items: center; gap: 16px; animation: slideUp var(--transition-normal); box-shadow: var(--shadow-sm); }
.qr-svg-container { width: 100%; display: flex; justify-content: center; padding: 20px; background: white; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-inner); }
.qr-actions { display: flex; gap: 8px; width: 100%; }
.qr-actions button { flex: 1; }
.qr-hint { font-size: 0.75rem; color: var(--text-muted); text-align: center; }
.qr-placeholder { width: 100%; padding: 48px 24px; background: var(--bg-secondary); border: 2px dashed var(--border); border-radius: var(--radius-lg); display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; transition: border-color var(--transition-normal); }
.qr-placeholder:hover { border-color: var(--border-hover); }
.qr-placeholder-icon { font-size: 3rem; opacity: 0.6; }
.qr-placeholder h3 { font-size: 1.1rem; color: var(--text-secondary); font-weight: 500; }
.qr-placeholder p { font-size: 0.85rem; color: var(--text-muted); }
.qr-placeholder-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 8px; }
.qr-error-card { border-color: var(--warning); }
.qr-pending-card { border-color: var(--border); }
.qr-error-icon { font-size: 2rem; }
.qr-error-suggestion { font-size: 0.8rem; color: var(--text-muted); }
.qr-pending-icon { font-size: 2rem; animation: pulse 1s ease-in-out infinite; }

@media (max-width: 768px) {
    .qr-layout { grid-template-columns: 1fr; }
    .qr-preview-area { position: static; }
    .qr-control-row { flex-direction: column; }
}

/* ─── Player Module ──────────────────────────────────────────── */
.player-module { max-width: 720px; margin: 0 auto; position: relative; }

.player-header { margin-bottom: 20px; }
.player-header h2 {
    font-size: 1.3rem; font-weight: 600; margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}
.player-upload-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.player-track-count { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }

.player-drop-overlay {
    position: absolute; inset: 0; z-index: 100;
    background: rgba(108, 92, 231, 0.15); backdrop-filter: blur(4px);
    border: 3px dashed var(--accent); border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center; animation: fadeIn 150ms ease;
}
.player-drop-content {
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    padding: 40px; background: var(--bg-secondary);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
}
.player-drop-icon { font-size: 3rem; animation: pulse 1s ease-in-out infinite; }
.player-drop-content h3 { font-size: 1.2rem; font-weight: 600; color: var(--accent); }
.player-drop-content p { font-size: 0.85rem; color: var(--text-muted); }

.player-main-card {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 28px; display: flex;
    flex-direction: column; gap: 20px; margin-bottom: 20px;
    animation: slideUp var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative; overflow: hidden;
}

.player-main-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.6;
}

.player-track-info { display: flex; align-items: center; gap: 16px; }
.player-track-art { font-size: 3rem; width: 72px; height: 72px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: var(--radius-md); }
.player-track-details { flex: 1; }
.player-track-name { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); display: block; word-break: break-word; }
.player-download-btn { margin-left: auto; flex-shrink: 0; }

.player-progress-area { display: flex; align-items: center; gap: 12px; }
.player-time { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); min-width: 40px; text-align: center; }

.player-seek-bar {
    flex: 1; -webkit-appearance: none; height: 6px; border-radius: 3px;
    background: var(--bg-tertiary); border: 1px solid var(--border); outline: none;
}

.player-seek-bar::-webkit-slider-thumb {
    -webkit-appearance: none; width: 16px; height: 16px;
    border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.player-seek-bar::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.player-buttons { display: flex; align-items: center; justify-content: center; gap: 8px; }
.player-btn { width: 44px; height: 44px; border: none; background: var(--bg-tertiary); color: var(--text-secondary); border-radius: 50%; cursor: pointer; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.player-btn:hover { background: var(--bg-elevated); color: var(--text-primary); transform: scale(1.1); }
.player-btn.active { background: var(--accent-glow); color: var(--accent); }
.player-btn-play { width: 56px; height: 56px; background: var(--accent); color: white; font-size: 1.4rem; box-shadow: 0 4px 16px var(--accent-glow); }

.player-volume-area { display: flex; align-items: center; gap: 10px; }

.player-volume-bar {
    flex: 1; max-width: 200px; -webkit-appearance: none; height: 4px; border-radius: 2px;
    background: var(--bg-tertiary); border: 1px solid var(--border); outline: none;
}

.player-volume-bar::-webkit-slider-thumb {
    -webkit-appearance: none; width: 14px; height: 14px;
    border-radius: 50%; background: var(--accent);
    cursor: pointer; border: 2px solid var(--bg-secondary);
    transition: transform var(--transition-fast);
}

.player-volume-bar::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
.player-vol-pct { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); min-width: 36px; }

.player-playlist {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-md); overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.playlist-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--bg-tertiary); }
.playlist-header h3 { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.playlist-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px; cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border);
}
.playlist-item:last-child { border-bottom: none; }
.playlist-item:hover { background: var(--bg-tertiary); }
.playlist-item.active { background: var(--accent-glow); border-left: 3px solid var(--accent); }
.playlist-idx {
    font-size: 0.75rem; color: var(--text-muted);
    font-family: var(--font-mono); min-width: 28px;
    text-align: right;
}
.playlist-drag-handle {
    font-size: 1rem; color: var(--text-muted); opacity: 0.4;
    cursor: grab; user-select: none;
}
.playlist-item:hover .playlist-drag-handle { opacity: 0.8; }
.playlist-name { flex: 1; font-size: 0.85rem; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.playlist-item.dragging { opacity: 0.4; }
.playlist-item.drag-over { border-top: 2px solid var(--accent); background: var(--accent-glow); }
.playlist-remove { border: none; background: transparent; color: var(--text-muted); cursor: pointer; font-size: 0.8rem; padding: 4px; border-radius: 4px; transition: all var(--transition-fast); opacity: 0; }
.playlist-item:hover .playlist-remove { opacity: 1; }
.playlist-remove:hover { color: var(--error); background: var(--error-bg); }

.player-empty { text-align: center; padding: 60px 40px; border: 2px dashed var(--border); border-radius: var(--radius-lg); background: var(--bg-secondary); transition: border-color var(--transition-normal); }
.player-empty:hover { border-color: var(--border-hover); }
.player-empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.6; }
.player-empty h3 { font-size: 1.1rem; color: var(--text-secondary); font-weight: 500; margin-bottom: 8px; }
.player-empty p { font-size: 0.85rem; color: var(--text-muted); }
.player-empty-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 8px; opacity: 0.7; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ─── Chat Module ────────────────────────────────────────────────── */
.chat-module { max-width: 720px; margin: 0 auto; height: 100%; display: flex; flex-direction: column; }
.chat-header { margin-bottom: 16px; }
.chat-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.chat-messages { flex: 1; overflow-y: auto; padding: 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 12px; display: flex; flex-direction: column; gap: 8px; min-height: 300px; }
.chat-input-area { display: flex; gap: 8px; }
.chat-input { flex: 1; padding: 10px 14px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-md); font-size: 0.9rem; outline: none; }
.chat-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.chat-send-btn { padding: 10px 20px; border: none; background: var(--accent); color: white; border-radius: var(--radius-md); cursor: pointer; font-weight: 600; transition: all var(--transition-fast); }
.chat-send-btn:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* ─── PDF Module ────────────────────────────────────────────── */
.pdf-module { max-width: 720px; margin: 0 auto; }
.pdf-header { margin-bottom: 20px; }
.pdf-header h2 {
    font-size: 1.3rem; font-weight: 600; margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}
.pdf-mode-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.pdf-mode-tab {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 12px; border: 1px solid var(--border); background: var(--bg-secondary);
    color: var(--text-secondary); border-radius: var(--radius-md); cursor: pointer;
    font-size: 0.85rem; font-weight: 500; transition: all var(--transition-fast);
}
.pdf-mode-tab:hover { border-color: var(--accent); color: var(--text-primary); }
.pdf-mode-tab.active { background: var(--accent); color: white; border-color: var(--accent); box-shadow: 0 2px 8px var(--accent-glow); }
.pdf-mode-description { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 20px; }
.pdf-upload-area { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.pdf-file-count { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }
.pdf-file-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.pdf-file-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}
.pdf-file-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}
.pdf-file-icon { font-size: 1.2rem; }
.pdf-file-details { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.pdf-file-name { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pdf-file-size { font-size: 0.7rem; color: var(--text-muted); }
.pdf-action-row { display: flex; gap: 10px; margin-bottom: 16px; }
.pdf-result-card { padding: 20px; background: var(--bg-secondary); border: 1px solid var(--success); border-radius: var(--radius-md); animation: slideUp var(--transition-normal); box-shadow: 0 0 20px var(--success-bg); }
.pdf-result-header h3 { font-size: 1rem; font-weight: 600; color: var(--success); margin-bottom: 16px; }
.pdf-result-actions { display: flex; gap: 10px; }
.pdf-text-result { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; animation: slideUp var(--transition-normal); }
.pdf-text-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--bg-tertiary); }
.pdf-text-header h3 { font-size: 0.9rem; font-weight: 600; color: var(--text-secondary); }
.pdf-text-preview {
    padding: 16px; font-family: var(--font-mono); font-size: 0.8rem;
    color: var(--text-primary); white-space: pre-wrap; word-wrap: break-word;
    max-height: 400px; overflow-y: auto; line-height: 1.6;
    background: var(--bg-primary);
}
.pdf-empty { text-align: center; padding: 60px 40px; border: 2px dashed var(--border); border-radius: var(--radius-lg); background: var(--bg-secondary); transition: border-color var(--transition-normal); }
.pdf-empty:hover { border-color: var(--border-hover); }
.pdf-empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.6; }
.pdf-empty h3 { font-size: 1.1rem; color: var(--text-secondary); font-weight: 500; margin-bottom: 8px; }
.pdf-empty p { font-size: 0.85rem; color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════
   Chat Module — P2P Text & Voice/Video UI Styles
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Chat Connect Panel ────────────────────────────────────────── */
.chat-connect-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    animation: chat-panel-in 300ms ease both;
}

@keyframes chat-panel-in {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-connect-panel h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.chat-connect-panel > p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.btn-connect {
    width: 100%;
    padding: 14px 20px !important;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
    justify-content: center !important;
}

/* ─── Connect Mode Toggle ───────────────────────────────────────── */
.connect-mode-toggle {
    display: flex;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 3px;
    gap: 2px;
}

.connect-mode-toggle button {
    flex: 1;
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: calc(var(--radius-md) - 2px);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.connect-mode-toggle button:hover {
    color: var(--text-secondary);
}

.connect-mode-toggle button.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.signal-url-input {
    display: flex;
    gap: 8px;
}

.signal-url-input input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.signal-url-input input:focus {
    border-color: var(--accent);
}

.connect-buttons {
    display: flex;
    gap: 8px;
}

.connect-buttons button {
    flex: 1;
}

/* ─── Chat Connect Panel extras ────────────────────────────────── */
.signal-status {
    font-size: 0.82rem;
    color: var(--info);
    font-weight: 500;
    padding: 8px 12px;
    background: var(--info-bg);
    border: 1px solid var(--info);
    border-radius: var(--radius-sm);
    animation: signal-pulse 2s ease-in-out infinite;
}

@keyframes signal-pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.code-display {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.code-display textarea,
.code-display code {
    flex: 1;
}

.room-code-short {
    display: block;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent);
    word-break: break-all;
    user-select: all;
    line-height: 1.5;
}

.room-code-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    outline: none;
}

.room-code-input:focus {
    border-color: var(--accent);
}

.auto-waiting {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 12px;
}

.auto-waiting::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
    animation: waiting-dot 1.5s ease-in-out infinite;
}

@keyframes waiting-dot {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* ─── Chat Error Display ──────────────────────────────────────────── */
.chat-error {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--error-bg);
    border: 1px solid var(--error);
    border-radius: var(--radius-md);
    margin: 12px 0;
    animation: chat-error-in 250ms ease both;
}

@keyframes chat-error-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-error-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    line-height: 1;
    margin-top: 2px;
}

.chat-error-text {
    flex: 1;
    font-size: 0.85rem;
    color: var(--error);
    line-height: 1.5;
    white-space: pre-line;
}

.chat-error-close {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
    opacity: 0.6;
}

.chat-error-close:hover {
    opacity: 1;
    background: var(--error-bg);
    color: var(--error);
    transform: scale(1.15);
}

/* ─── Chat Info Cards ───────────────────────────────────────────── */
.chat-info-cards {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.info-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.info-icon {
    font-size: 1.3rem;
    min-width: 28px;
    text-align: center;
    margin-top: 2px;
}

.info-card strong {
    display: block;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.info-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ─── Room Input (SDP textarea) ─────────────────────────────────── */
.room-input {
    flex: 1;
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-family: var(--font-mono);
    line-height: 1.5;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.room-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.room-input:read-only {
    opacity: 0.85;
    cursor: default;
}

/* ─── Call Button: Danger (red alert state) ─────────────────────── */
.call-btn-danger {
    background: var(--error-bg) !important;
    border-color: var(--error) !important;
    color: var(--error) !important;
    box-shadow: 0 0 0 1px var(--error) !important;
}

.call-btn-danger:hover {
    background: rgba(255, 107, 107, 0.2) !important;
    border-color: var(--error) !important;
    color: var(--error) !important;
    box-shadow: 0 0 0 2px var(--error), 0 4px 16px var(--error-bg) !important;
    transform: scale(1.1) !important;
}

.call-btn-danger::after {
    background: radial-gradient(circle at center, rgba(255, 107, 107, 0.3), transparent 70%) !important;
}

/* ─── Chat Messages: Own / Peer / System ────────────────────────── */
.message {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.5;
    max-width: 85%;
    word-break: break-word;
    animation: message-in 200ms ease both;
}

@keyframes message-in {
    from { opacity: 0; transform: translateY(6px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.message-own {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: var(--radius-sm);
}

.message-peer {
    align-self: flex-start;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-bottom-left-radius: var(--radius-sm);
}

.message-system {
    align-self: center;
    background: var(--bg-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border);
    font-size: 0.78rem;
    font-style: italic;
    max-width: 95%;
    text-align: center;
    border-radius: var(--radius-full);
    padding: 6px 16px;
}

/* ─── Chat Input Bar ────────────────────────────────────────────── */
.chat-input-bar {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.chat-input-bar:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow);
}

.message-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.message-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.message-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.btn-send {
    padding: 10px 18px !important;
    font-size: 1rem !important;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-send:hover:not(:disabled) {
    transform: scale(1.05);
}

.btn-send:active:not(:disabled) {
    transform: scale(0.95);
}

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ─── Chat Interface (normal chat mode) ─────────────────────────── */
.chat-interface {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 12px;
    animation: chat-panel-in 300ms ease both;
}

/* Room badge dot indicator (green pulse dot before room name) */
.room-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse-dot 2s ease-in-out infinite;
    flex-shrink: 0;
}

/* Ghost button positioning in room bar */
.chat-room-bar .btn-ghost {
    margin-left: auto;
    padding: 6px 10px;
    font-size: 0.8rem;
}

/* ─── Ejemplo Module ─────────────────────────────────────────────── */
.ejemplo-module { max-width: 600px; margin: 0 auto; }
.ejemplo-header { margin-bottom: 24px; }
.ejemplo-header h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }

/* ═══════════════════════════════════════════════════════════════════
   Share Module — P2P File Transfer
   ═══════════════════════════════════════════════════════════════════ */

.share-module { max-width: 600px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }

.share-info { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.share-info-badge { font-size: 1.1rem; }

.share-status-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); font-size: 0.82rem; }
.share-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); flex-shrink: 0; transition: background var(--transition-fast); }
.share-status-dot.connected { background: var(--success); box-shadow: 0 0 6px var(--success); }
.share-status-dot.connecting { background: var(--warning); animation: pulse-dot 1s ease-in-out infinite; }
.share-status-text { flex: 1; color: var(--text-secondary); }
.share-disconnect-btn { display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; border: none; background: var(--bg-elevated); color: var(--text-muted); border-radius: 50%; cursor: pointer; font-size: 0.7rem; transition: all var(--transition-fast); }
.share-disconnect-btn:hover { background: var(--error-bg); color: var(--error); transform: scale(1.15); }

.share-error-card { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: var(--error-bg); border: 1px solid var(--error); border-radius: var(--radius-sm); font-size: 0.82rem; color: var(--error); }

.share-connect-panel { display: flex; gap: 16px; align-items: stretch; }
.share-connect-card { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 28px 20px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-lg); text-align: center; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
.share-connect-card:hover { border-color: var(--accent-glow-strong); box-shadow: var(--shadow-glow); }
.share-connect-icon { font-size: 2.5rem; margin-bottom: 4px; }
.share-connect-card h3 { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.share-connect-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; max-width: 200px; }
.share-divider { display: flex; align-items: center; padding: 0 4px; }
.share-divider span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; padding: 4px 8px; background: var(--bg-tertiary); border-radius: var(--radius-full); }

.share-code-input-group { display: flex; gap: 8px; width: 100%; }
.share-input { flex: 1; padding: 10px 12px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-primary); font-size: 0.82rem; transition: border-color var(--transition-fast); min-width: 0; }
.share-input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-glow); }
.share-input::placeholder { color: var(--text-muted); }

.share-code-panel { display: flex; flex-direction: column; gap: 12px; }
.share-code-card { padding: 24px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-lg); display: flex; flex-direction: column; gap: 12px; }
.share-code-card h3 { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.share-code-desc { font-size: 0.78rem; color: var(--text-muted); }
.share-code-display { display: flex; align-items: center; gap: 8px; padding: 12px 14px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.share-code-text { flex: 1; font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); word-break: break-all; line-height: 1.5; user-select: all; }
.share-copy-btn { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-secondary); border-radius: var(--radius-sm); cursor: pointer; font-size: 0.9rem; transition: all var(--transition-fast); flex-shrink: 0; }
.share-copy-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); transform: scale(1.1); }

.share-response-area { display: flex; flex-direction: column; gap: 8px; }
.share-label { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); }
.share-textarea { width: 100%; padding: 10px 12px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-mono); font-size: 0.72rem; resize: vertical; transition: border-color var(--transition-fast); }
.share-textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-glow); }
.share-textarea::placeholder { color: var(--text-muted); }

.share-waiting { font-size: 0.82rem; color: var(--text-muted); text-align: center; padding: 8px; animation: pulse-text 2s ease-in-out infinite; }
@keyframes pulse-text { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }

.share-transfer-panel { display: flex; flex-direction: column; gap: 16px; }
.share-file-sender { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.share-file-select { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; flex-wrap: wrap; }
.share-file-input-hidden { display: none; }
.share-select-btn { padding: 8px 14px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-sm); cursor: pointer; font-size: 0.82rem; transition: all var(--transition-fast); }
.share-select-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.share-file-name { font-size: 0.82rem; color: var(--text-primary); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.share-file-size { font-size: 0.72rem; color: var(--text-muted); }

.share-progress-container { display: flex; flex-direction: column; gap: 8px; padding: 16px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); }
.share-progress-bar { width: 100%; height: 6px; background: var(--bg-elevated); border-radius: 3px; overflow: hidden; }
.share-progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-subtle)); border-radius: 3px; transition: width 300ms ease; min-width: 0; }
.share-progress-info { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--text-muted); }

.share-received-card { display: flex; align-items: center; gap: 14px; padding: 16px; background: var(--success-bg); border: 1px solid var(--success); border-radius: var(--radius-md); animation: donation-scale-in 300ms cubic-bezier(0.34, 1.56, 0.64, 1); }
.share-received-icon { font-size: 1.8rem; }
.share-received-info { flex: 1; min-width: 0; }
.share-received-info strong { display: block; font-size: 0.9rem; color: var(--text-primary); margin-bottom: 2px; }
.share-received-info span { font-size: 0.75rem; color: var(--text-muted); }

.share-history { padding: 12px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: var(--radius-md); }
.share-history h4 { font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px; }
.share-history-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.share-history-item { display: flex; align-items: center; gap: 8px; padding: 6px 8px; font-size: 0.78rem; color: var(--text-secondary); border-radius: var(--radius-sm); transition: background var(--transition-fast); }
.share-history-item:hover { background: var(--bg-hover); }

.share-connection-active { text-align: center; }
.share-conn-badge { display: inline-flex; align-items: center; gap: 4px; padding: 6px 14px; background: var(--success-bg); border: 1px solid var(--success); border-radius: var(--radius-full); font-size: 0.78rem; color: var(--success); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════
   Floating Particles — Subtle animated background dots
   ═══════════════════════════════════════════════════════════════════ */

.aurora-particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform, opacity;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.aurora-particle-visible { opacity: 0.5; }

@keyframes particle-float-1 {
    0% { transform: translate(0, 0) scale(1); opacity: 0; }
    10% { opacity: 0.5; }
    90% { opacity: 0.3; }
    100% { transform: translate(var(--dx, 40px), var(--dy, -120px)) scale(0.5); opacity: 0; }
}

@keyframes particle-float-2 {
    0% { transform: translate(0, 0) scale(1); opacity: 0; }
    10% { opacity: 0.4; }
    90% { opacity: 0.2; }
    100% { transform: translate(var(--dx, -30px), var(--dy, -100px)) scale(0.6); opacity: 0; }
}

@keyframes particle-float-3 {
    0% { transform: translate(0, 0) scale(1); opacity: 0; }
    10% { opacity: 0.35; }
    90% { opacity: 0.15; }
    100% { transform: translate(var(--dx, 20px), var(--dy, -150px)) scale(0.4); opacity: 0; }
}

.particle-1 { animation: particle-float-1 var(--duration, 8s) ease-out infinite; animation-delay: var(--delay, 0s); }
.particle-2 { animation: particle-float-2 var(--duration, 10s) ease-out infinite; animation-delay: var(--delay, 0s); }
.particle-3 { animation: particle-float-3 var(--duration, 12s) ease-out infinite; animation-delay: var(--delay, 0s); }

@media (prefers-reduced-motion: reduce) {
    .aurora-particle { display: none !important; }
}

/* ═══════════════════════════════════════════════════════════════════
   Juegos Module — Sudoku & BuscaMinas
   ═══════════════════════════════════════════════════════════════════ */

.juegos-module { max-width: 600px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; align-items: center; }
.juegos-header { text-align: center; }
.juegos-header h2 { font-size: 1.3rem; font-weight: 700; margin-bottom: 4px; background: linear-gradient(135deg, var(--text-primary), var(--accent-subtle)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: inline-block; }
.juegos-info { font-size: 0.82rem; color: var(--text-muted); }

.juegos-tabs { display: flex; gap: 8px; justify-content: center; }
.juegos-tab { display: flex; align-items: center; gap: 8px; padding: 10px 20px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-full); cursor: pointer; font-size: 0.85rem; font-weight: 500; transition: all var(--transition-fast); }
.juegos-tab:hover { border-color: var(--accent); color: var(--text-primary); background: var(--bg-hover); transform: translateY(-1px); }
.juegos-tab.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); font-weight: 600; box-shadow: var(--shadow-glow); }
.juegos-tab-icon { font-size: 1.2rem; }

/* ─── Sudoku ──────────────────────────────────────────────────── */
.sudoku-container { display: flex; flex-direction: column; align-items: center; gap: 14px; position: relative; }

.sudoku-toolbar { display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 500px; }
.sudoku-diff-select { display: flex; gap: 6px; justify-content: center; }
.sudoku-diff-btn { padding: 6px 16px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-full); cursor: pointer; font-size: 0.78rem; font-weight: 500; transition: all var(--transition-fast); }
.sudoku-diff-btn:hover { border-color: var(--accent); color: var(--text-primary); }
.sudoku-diff-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); font-weight: 600; }

.sudoku-stats { display: flex; gap: 14px; justify-content: center; }
.sudoku-stat { font-size: 0.82rem; color: var(--text-secondary); font-family: var(--font-mono); }

.sudoku-board { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; background: var(--border); padding: 3px; border-radius: var(--radius-sm); max-width: 300px; width: 100%; aspect-ratio: 1; }
.sudoku-block { display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); background: var(--bg-secondary); gap: 0; }

.sudoku-cell { display: flex; align-items: center; justify-content: center; aspect-ratio: 1; cursor: pointer; transition: background var(--transition-fast); user-select: none; font-size: 1.2rem; position: relative; }
.sudoku-cell:hover { background: var(--bg-hover); }
.sudoku-cell.selected { background: var(--accent-glow) !important; }
.sudoku-cell.highlighted { background: rgba(108, 92, 231, 0.08); }
.sudoku-cell.same-num { background: rgba(108, 92, 231, 0.12); }
.sudoku-cell.right-border { border-right: 1.5px solid var(--text-muted); }
.sudoku-cell.bottom-border { border-bottom: 1.5px solid var(--text-muted); }
.sudoku-cell-value { font-weight: 600; color: var(--text-primary); font-size: 1rem; }
.sudoku-cell.given .sudoku-cell-value { font-weight: 800; color: var(--text-primary); }
.sudoku-cell.given { background: var(--bg-tertiary); }

.sudoku-pencil { display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); width: 100%; height: 100%; padding: 1px; }
.pencil-num { display: flex; align-items: center; justify-content: center; font-size: 0.45rem; color: var(--text-muted); line-height: 1; }
.pencil-num.visible { color: var(--text-secondary); font-weight: 500; }

.sudoku-numpad { display: flex; gap: 6px; max-width: 450px; width: 100%; justify-content: center; flex-wrap: wrap; }
.sudoku-num-btn { width: 34px; height: 34px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-primary); border-radius: var(--radius-sm); cursor: pointer; font-size: 0.85rem; font-weight: 600; transition: all var(--transition-fast); }
.sudoku-num-btn:hover { border-color: var(--accent); background: var(--accent-glow); transform: scale(1.08); }
.sudoku-num-btn:active { transform: scale(0.95); }
.sudoku-num-btn-erase { color: var(--error); }

.sudoku-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.sudoku-action-btn { padding: 8px 16px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-full); cursor: pointer; font-size: 0.8rem; font-weight: 500; transition: all var(--transition-fast); }
.sudoku-action-btn:hover { border-color: var(--accent); color: var(--text-primary); background: var(--bg-hover); }
.sudoku-action-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }
.sudoku-action-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.sudoku-action-solve { background: var(--warning-bg); border-color: var(--warning); color: var(--warning); }
.sudoku-action-solve:hover { background: var(--warning); color: var(--bg-primary); }

.sudoku-overlay, .minas-overlay {
    position: absolute; inset: 0; z-index: 50;
    background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-lg); animation: fade-in 200ms ease;
}

.sudoku-overlay-card, .minas-overlay-card {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-xl); padding: 32px; text-align: center;
    box-shadow: var(--shadow-xl); min-width: 280px;
}

.sudoku-overlay-card h2, .minas-overlay-card h2 { font-size: 1.5rem; margin-bottom: 8px; }
.sudoku-overlay-card p, .minas-overlay-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 16px; }
.sudoku-new-btn, .minas-new-btn {
    padding: 10px 24px; border: 1px solid var(--accent);
    background: var(--accent-glow); color: var(--accent);
    border-radius: var(--radius-full); cursor: pointer; font-size: 0.9rem;
    font-weight: 600; transition: all var(--transition-fast);
}
.sudoku-new-btn:hover, .minas-new-btn:hover { background: var(--accent); color: white; transform: scale(1.05); }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ─── BuscaMinas ──────────────────────────────────────────────── */
.minas-container { display: flex; flex-direction: column; align-items: center; gap: 14px; position: relative; width: 100%; max-width: 100%; overflow: auto; }

.minas-toolbar { display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 500px; }
.minas-diff-select { display: flex; gap: 6px; justify-content: center; }
.minas-diff-btn { padding: 6px 16px; border: 1px solid var(--border); background: var(--bg-tertiary); color: var(--text-secondary); border-radius: var(--radius-full); cursor: pointer; font-size: 0.78rem; font-weight: 500; transition: all var(--transition-fast); }
.minas-diff-btn:hover { border-color: var(--accent); color: var(--text-primary); }
.minas-diff-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); font-weight: 600; }

.minas-stats { display: flex; gap: 14px; justify-content: center; }
.minas-stat { font-size: 0.82rem; color: var(--text-secondary); font-family: var(--font-mono); }

.minas-board {
    display: grid;
    gap: 1px;
    background: var(--border);
    padding: 1px;
    border-radius: var(--radius-sm);
    user-select: none;
    margin: 0 auto;
}

.minas-cell {
    width: var(--cell-size, 30px);
    height: var(--cell-size, 30px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    transition: background var(--transition-fast);
}

.minas-cell:hover { background: var(--bg-hover); }
.minas-cell.revealed { background: var(--bg-tertiary); cursor: default; }
.minas-cell.flagged { background: rgba(255, 167, 38, 0.1); }
.minas-cell.mine-hit { background: var(--error-bg); }
.minas-cell-icon { font-size: 0.9rem; line-height: 1; }
.minas-cell-num { font-size: 0.9rem; font-weight: 700; line-height: 1; }

/* ═══════════════════════════════════════════════════════════════════
   Cronómetro — Stopwatch & Countdown Timer
   ═══════════════════════════════════════════════════════════════════ */

.crono-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 20px;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.crono-toolbar { width: 100%; }

.crono-mode-select {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.crono-mode-btn {
    padding: 8px 20px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.crono-mode-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    background: var(--bg-hover);
}

.crono-mode-btn.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
    box-shadow: 0 0 0 1px var(--accent-glow-strong);
}

/* ─── Display ─────────────────────────────────────────────────── */
.crono-display {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 40px;
    box-shadow: var(--shadow-md), var(--shadow-glow);
    width: 100%;
    text-align: center;
}

.crono-time {
    font-family: var(--font-mono);
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    transition: color var(--transition-normal);
    text-shadow: 0 0 30px var(--accent-glow-strong);
    line-height: 1.2;
}

.crono-time::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    margin: 8px auto 0;
    border-radius: 1px;
}

/* ─── Controls ────────────────────────────────────────────────── */
.crono-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    width: 100%;
}

.crono-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    min-width: 90px;
    gap: 6px;
}

.crono-btn:hover {
    border-color: var(--accent-glow-strong);
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.crono-btn:active { transform: translateY(0); }

.crono-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.crono-btn-primary {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
    box-shadow: 0 0 0 1px var(--accent-glow-strong);
}

.crono-btn-primary:hover {
    background: var(--accent-glow-strong);
    border-color: var(--accent-hover);
    color: var(--accent-hover);
    box-shadow: 0 4px 16px var(--accent-glow);
}

/* ─── Presets ─────────────────────────────────────────────────── */
.crono-presets {
    width: 100%;
    animation: slideUp var(--transition-normal);
}

.crono-preset-btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}

.crono-preset-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    background: var(--bg-hover);
}

.crono-preset-btn.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

/* ─── Laps ────────────────────────────────────────────────────── */
.crono-laps {
    width: 100%;
    max-height: 200px;
    overflow-y: auto;
    animation: slideUp var(--transition-normal);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.crono-laps::-webkit-scrollbar { width: 4px; }
.crono-laps::-webkit-scrollbar-track { background: transparent; }
.crono-laps::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.crono-laps-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.crono-lap-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), border-color var(--transition-fast);
    animation: slideUp 200ms ease both;
}

.crono-lap-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.crono-lap-num {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    font-family: var(--font-mono);
    min-width: 32px;
}

.crono-lap-time {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════════════════
   Responsive — Mobile y tablets
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Variables responsive ────────────────────────────────────── */
:root {
    --sidebar-width: 240px;
    --toolbar-height: 64px;
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
        --toolbar-height: 56px;
    }

    /* ─── Sidebar overlay ─────────────────────────────────────── */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 9;
        opacity: 0;
        transition: opacity var(--transition-normal);
    }

    .sidebar-overlay.visible {
        display: block;
        opacity: 1;
    }

    /* ─── Sidebar como drawer ─────────────────────────────────── */
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 20;
        transition: left var(--transition-normal), box-shadow var(--transition-normal),
                    background var(--transition-slow), color var(--transition-slow),
                    border-color var(--transition-slow);
        box-shadow: none;
        border-right: none;
    }

    .sidebar.open {
        left: 0;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
    }

    /* ─── Sidebar close button ────────────────────────────────── */
    .sidebar-close-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border: none;
        background: var(--bg-tertiary);
        color: var(--text-muted);
        border-radius: 50%;
        cursor: pointer;
        font-size: 0.85rem;
        margin-left: auto;
        flex-shrink: 0;
        transition: all var(--transition-fast);
    }

    .sidebar-close-btn:hover {
        background: var(--error-bg);
        color: var(--error);
        transform: rotate(90deg);
    }

    /* ─── Hamburger button ───────────────────────────────────── */
    .hamburger-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        width: 36px;
        height: 36px;
        padding: 6px;
        border: 1px solid var(--border);
        background: var(--bg-tertiary);
        border-radius: var(--radius-sm);
        cursor: pointer;
        flex-shrink: 0;
        margin-right: 8px;
        transition: all var(--transition-fast);
    }

    .hamburger-btn:hover {
        border-color: var(--accent);
        background: var(--bg-hover);
        box-shadow: 0 0 0 2px var(--accent-glow);
    }

    .hamburger-line {
        display: block;
        width: 18px;
        height: 2px;
        background: var(--text-secondary);
        border-radius: 1px;
        transition: background var(--transition-fast), transform var(--transition-fast);
    }

    .hamburger-btn:hover .hamburger-line {
        background: var(--accent);
    }

    .hamburger-btn:active .hamburger-line:nth-child(1) {
        transform: translateY(3px) rotate(45deg);
    }

    .hamburger-btn:active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .hamburger-btn:active .hamburger-line:nth-child(3) {
        transform: translateY(-3px) rotate(-45deg);
    }

    /* ─── Toolbar ──────────────────────────────────────────────── */
    .toolbar {
        padding: 0 12px;
    }

    .toolbar-left {
        flex-direction: row;
        align-items: center;
        gap: 4px;
    }

    .tool-title {
        font-size: 0.95rem;
    }

    .tool-description {
        display: none;
    }

    .toolbar-right {
        gap: 4px;
    }

    .donate-button .donate-label {
        display: none;
    }

    .theme-toggle .theme-toggle-label {
        display: none;
    }

    /* ─── Tool Viewport ────────────────────────────────────────── */
    .tool-viewport {
        padding: 12px;
        padding-top: 20px;
    }

    /* ─── Modales ──────────────────────────────────────────────── */
    .donation-overlay {
        padding: 12px;
        align-items: flex-end;
    }

    .donation-modal,
    .settings-modal {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-height: 85vh;
    }

    .donation-header,
    .settings-header {
        padding: 24px 20px 16px;
    }

    .donation-body,
    .settings-section {
        padding: 0 20px 16px;
    }

    .donation-footer,
    .settings-footer {
        padding: 12px 20px;
    }

    .donation-header-icon {
        font-size: 1.8rem;
    }

    .donation-option {
        gap: 10px;
        padding: 12px;
    }

    .donation-option-icon {
        font-size: 1.2rem;
        min-width: 24px;
    }

    .settings-tabs {
        padding: 0 16px;
    }

    .settings-section {
        padding: 12px 16px;
    }

    .settings-item {
        padding: 10px 12px;
    }

    .settings-item-icon {
        font-size: 1rem;
        min-width: 24px;
    }

    .settings-about-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px;
        padding: 8px 12px;
        font-size: 0.72rem;
    }

    /* ─── Calculadora ──────────────────────────────────────────── */
    .calc-module {
        padding: 8px;
    }

    .calc-display {
        font-size: 1.6rem;
        padding: 16px;
        min-height: 72px;
    }

    .calc-btn, .calc-btn-num, .calc-btn-op, .calc-btn-func,
    .calc-btn-mem, .calc-btn-mode {
        font-size: 1rem;
        padding: 12px 8px;
        min-width: 0;
    }

    .calc-grid {
        gap: 4px;
    }

    /* ─── QR ───────────────────────────────────────────────────── */
    .qr-module {
        padding: 8px;
    }

    .qr-textarea {
        font-size: 0.8rem;
        padding: 10px;
        min-height: 80px;
    }

    .qr-preview-card {
        padding: 12px;
    }

    /* ─── Chat ─────────────────────────────────────────────────── */
    .chat-module {
        padding: 8px;
    }

    .chat-interface {
        height: calc(100vh - 200px);
    }

    .chat-messages {
        padding: 8px;
    }

    .message {
        max-width: 85%;
        font-size: 0.85rem;
    }

    .chat-input-bar {
        padding: 8px;
        gap: 6px;
    }

    .message-input {
        font-size: 0.85rem;
        padding: 10px;
    }

    .call-btn {
        padding: 10px;
        font-size: 0.75rem;
    }

    .call-video-container {
        min-height: 200px;
    }

    /* ─── Notas ────────────────────────────────────────────────── */
    .notas-module {
        padding: 8px;
        flex-direction: column;
    }

    .notas-sidebar {
        width: 100%;
        max-height: 180px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .notas-editor {
        height: 300px;
    }

    .notas-editor-textarea {
        font-size: 0.85rem;
    }

    /* ─── Converter ────────────────────────────────────────────── */
    .converter-module {
        padding: 8px;
    }

    .converter-controls {
        flex-direction: column;
    }

    .input-field, .textarea-field {
        font-size: 0.85rem;
    }

    /* ─── Diff ─────────────────────────────────────────────────── */
    .diff-module {
        padding: 8px;
    }

    .diff-input-col textarea {
        font-size: 0.75rem;
        min-height: 120px;
    }

    /* ─── JSON ─────────────────────────────────────────────────── */
    .json-module {
        padding: 8px;
    }

    .json-col textarea {
        font-size: 0.75rem;
        min-height: 150px;
    }

    /* ─── PDF ──────────────────────────────────────────────────── */
    .pdf-module {
        padding: 8px;
    }

    .pdf-file-item {
        flex-direction: column;
        gap: 8px;
    }

    .pdf-text-result {
        font-size: 0.75rem;
        max-height: 300px;
    }

    /* ─── Player ───────────────────────────────────────────────── */
    .player-module {
        padding: 8px;
    }

    .player-main-card {
        padding: 16px;
    }

    .player-seek-bar {
        height: 4px;
    }

    /* ─── Citation ─────────────────────────────────────────────── */
    .citation-module {
        padding: 8px;
    }

    .citation-field-row {
        flex-direction: column;
        gap: 6px;
    }

    .citation-result-text {
        font-size: 0.75rem;
        padding: 12px;
    }

    /* ─── Scanner ──────────────────────────────────────────────── */
    .scanner-module {
        padding: 8px;
    }

    .scanner-file-item {
        flex-direction: column;
        gap: 8px;
    }

    /* ─── Share ────────────────────────────────────────────────── */
    .share-module {
        padding: 8px;
    }

    .share-connect-panel {
        flex-direction: column;
        gap: 8px;
    }

    .share-connect-card {
        padding: 20px;
    }

    .share-file-sender {
        flex-direction: column;
        align-items: flex-start;
    }

    /* ─── Toasts ───────────────────────────────────────────────── */
    .toast {
        min-width: 0;
        max-width: calc(100vw - 32px);
        margin: 0 16px;
        font-size: 0.8rem;
        padding: 10px 14px;
    }

    .toast-container {
        bottom: 12px;
        right: 0;
        left: 0;
        align-items: center;
    }

    /* ─── Drag handle menos prominente en mobile ───────────────── */
    .tool-drag-handle {
        opacity: 0.25;
    }

    /* ─── Ocultar tool-list-hint en mobile ─────────────────────── */
    .tool-list-hint {
        display: none;
    }

    /* ─── Partículas reducidas en mobile ───────────────────────── */
    .aurora-particle {
        display: none !important;
    }
}

/* ─── Tablets (768px - 1024px) ───────────────────────────────── */
@media (min-width: 769px) and (max-width: 1024px) {
    .tool-viewport {
        padding: 16px;
    }

    .tool-description {
        max-width: 250px;
        font-size: 0.7rem;
    }

    .donation-modal,
    .settings-modal {
        max-width: 440px;
    }

    .notas-module {
        gap: 8px;
    }

    .calc-grid {
        gap: 4px;
    }

    .calc-btn, .calc-btn-num, .calc-btn-op, .calc-btn-func {
        font-size: 0.85rem;
        padding: 10px 6px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   Image Preview — Converter Module
   ═══════════════════════════════════════════════════════════════════ */
.img-preview-card {
    margin: 12px 0;
    padding: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 300px;
    overflow: hidden;
    --pf-brightness: 1;
    --pf-contrast: 1;
    --pf-saturate: 1;
    --pf-invert: 0;
}
.img-preview {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), filter var(--transition-fast);
    filter: brightness(var(--pf-brightness)) contrast(var(--pf-contrast)) saturate(var(--pf-saturate)) invert(var(--pf-invert));
}
.img-preview:hover {
    transform: scale(1.02);
}

/* ═══════════════════════════════════════════════════════════════════
   URL Shortener — Converter Module
   ═══════════════════════════════════════════════════════════════════ */
.url-shortener {
    padding: 8px 0;
}
.url-result-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: fadeInUp 200ms ease;
}
.url-list-item {
    transition: all var(--transition-fast);
}
.url-list-item:hover {
    border-color: var(--border-hover) !important;
    background: var(--bg-hover) !important;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════════════
   Charts — Calculator Module
   ═══════════════════════════════════════════════════════════════════ */
.calc-charts {
    padding: 8px 0;
}
.chart-data-input:focus {
    outline: none;
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 2px var(--accent-glow);
}
.chart-canvas {
    transition: border-color var(--transition-fast);
}

/* ═══════════════════════════════════════════════════════════════════
   Plugin Marketplace
   ═══════════════════════════════════════════════════════════════════ */
.plugin-marketplace {
    padding: 8px 0;
}
.plugin-header {
    margin-bottom: 20px;
}
.plugin-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}
.plugin-card {
    transition: all var(--transition-fast) !important;
    position: relative;
    overflow: hidden;
}
.plugin-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-subtle));
    opacity: 0;
    transition: opacity var(--transition-fast);
}
.plugin-card:hover {
    border-color: var(--accent-glow-strong) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--accent-glow) !important;
}
.plugin-card:hover::before {
    opacity: 1;
}
.plugin-card .tool-check {
    opacity: 0.6;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.plugin-card:hover .tool-check {
    opacity: 1;
    transform: scale(1.15);
}

/* ═══════════════════════════════════════════════════════════════════
   Section Tabs (reusable)
   ═══════════════════════════════════════════════════════════════════ */
.section-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

/* ═══════════════════════════════════════════════════════════════════
   Lectura Module — Reading & Scanner View
   ═══════════════════════════════════════════════════════════════════ */

.lectura-module {
    max-width: 1100px;
    margin: 0 auto;
}

.lectura-header {
    margin-bottom: 20px;
}

.lectura-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.lectura-header .module-info {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.lectura-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-toolbar .toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--border);
    flex-shrink: 0;
}

.lectura-toolbar .toolbar-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.lectura-toolbar .toolbar-value {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    min-width: 32px;
    text-align: center;
    color: var(--text-secondary);
}

.lectura-toolbar .toolbar-file-name {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.lectura-search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-search-bar .search-icon {
    font-size: 0.9rem;
    flex-shrink: 0;
}

.lectura-search-bar .search-input {
    flex: 1;
    padding: 6px 10px;
    font-size: 0.85rem;
    border: none;
    background: transparent;
    color: var(--text-primary);
    outline: none;
}

.lectura-search-bar .search-input::placeholder {
    color: var(--text-muted);
}

.lectura-search-bar .search-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.lectura-reading-area {
    flex: 1;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow-y: auto;
    max-height: 65vh;
    transition: background var(--transition-slow), border-color var(--transition-slow);
    position: relative;
}

.lectura-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 40px;
    text-align: center;
}

.lectura-empty .empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.lectura-empty h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.lectura-empty p {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 400px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.lectura-bookmarks-sidebar {
    width: 180px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 8px;
    max-height: 65vh;
    overflow-y: auto;
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-bookmarks-sidebar .bookmarks-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 8px;
    padding: 0 4px;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.lectura-bookmarks-sidebar .bookmark-item {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 6px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s;
    margin-bottom: 2px;
    font-size: 0.75rem;
}

.lectura-bookmarks-sidebar .bookmark-item:hover {
    background: var(--bg-hover);
}

.lectura-bookmarks-sidebar .bookmark-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-primary);
}

.lectura-bookmarks-sidebar .bookmark-delete {
    padding: 2px 4px;
    font-size: 0.6rem;
    opacity: 0.5;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.lectura-bookmarks-sidebar .bookmark-delete:hover {
    opacity: 1;
    background: var(--error-bg);
    color: var(--error);
}

.lectura-reading-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-reading-footer .page-info {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.lectura-reading-footer .stats-info {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.lectura-highlights-details {
    margin-top: 12px;
    transition: background var(--transition-slow);
}

.lectura-highlights-details summary {
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-highlights-details .highlights-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-top: 4px;
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-highlights-details .highlight-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.lectura-highlights-details .highlight-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    display: inline-block;
    flex-shrink: 0;
}

.lectura-highlights-details .highlight-text {
    color: var(--text-secondary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lectura-highlights-details .highlight-delete {
    padding: 2px 4px;
    font-size: 0.6rem;
    opacity: 0.5;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.lectura-highlights-details .highlight-delete:hover {
    opacity: 1;
    background: var(--error-bg);
    color: var(--error);
}

.lectura-highlights-details .clear-highlights-btn {
    font-size: 0.7rem;
    color: var(--error);
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.lectura-highlights-details .clear-highlights-btn:hover {
    background: var(--error-bg);
}

/* ─── Scanner Dark Mode ─────────────────────────────────────── */
.lectura-reading-area.scanner-dark {
    /* El fondo lo controla el inline style (scanner_bg es mode-aware),
       no forzamos color aquí para que cada modo de filtro use su fondo. */
    box-shadow: inset 0 0 40px rgba(0,0,0,0.5);
}

.scanner-dark .fullscreen-toggle-btn {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.7);
}

.scanner-dark .fullscreen-toggle-btn:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
}

/* ─── Fullscreen Toggle Button ──────────────────────────────── */
.fullscreen-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1.5px solid var(--accent-glow-strong);
    background: var(--bg-elevated);
    color: var(--accent);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md), 0 0 12px var(--accent-glow);
    opacity: 0.9;
    z-index: 20;
}

.fullscreen-toggle-btn:hover {
    opacity: 1;
    background: var(--accent);
    border-color: var(--accent-hover);
    color: #fff;
    transform: scale(1.15);
    box-shadow: 0 0 24px var(--accent-glow-strong), var(--shadow-lg);
}

.fullscreen-toggle-btn:active {
    transform: scale(0.92);
}

.fullscreen-toggle-btn .btn-glow {
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: radial-gradient(circle at center, var(--accent-glow-strong), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.fullscreen-toggle-btn:hover .btn-glow {
    opacity: 1;
}

/* ─── Scanner Image Area (needs position:relative for abs button) */
.scanner-image-area {
    width: 100%;
    transition: all var(--transition-normal);
    position: relative;
}

/* Fondo filtrado del área de Scanner: un ::before (z-index:0) lleva el color
   + el filtro del modo (sepia, grayscale…). El contenido (canvas) va por
   encima con z-index:1 para que el filtro del fondo NO se aplique también a la
   hoja (que ya se filtra vía ctx.filter al componer el bitmap). Los estilos
   del modo también se notan en el fondo en MSI/WebView2. */
.scanner-image-area::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: var(--scanner-bg, transparent);
    filter: var(--scanner-bg-filter, none);
    pointer-events: none;
    transition: background var(--transition-normal), filter var(--transition-normal);
}

/* ─── Fullscreen Mode ────────────────────────────────────────── */
.scanner-image-area.scanner-fullscreen {
    position: fixed;
    inset: 0;
    z-index: 99998;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    /* IMPORTANTE: NO centrar el contenido. Con justify-content:center, cuando
       el documento desborda la pantalla, el contenido queda cortado ARRIBA e
       inalcanzable (bug clásico de flexbox + overflow): la hoja parece
       "bajar sola" y no hay forma de scrollear hasta el inicio. Con
       flex-start el contenedor de scroll ocupa toda la pantalla y scrollea
       internamente (arriba siempre alcanzable, scrollbar visible). */
    justify-content: flex-start;
    padding: 24px;
}

/* El tamaño de la hoja en fullscreen lo controla el zoom (inline styles con
   vw/vh en img_style/canvas_style): a 100% encaja en pantalla y por encima
   magnifica, dejando que el contenedor interno (overflow:auto) haga scroll.
   Ya no se fuerza 95vw/95vh para que la rueda del ratón pueda ampliar. */
.scanner-image-area.scanner-fullscreen img,
.scanner-image-area.scanner-fullscreen canvas {
    flex-shrink: 0;
}

/* FIX MSI/WebView2: forzar la ALTURA del contenedor de scroll en fullscreen
   con !important. El estilo inline (height:calc(100vh-90px)) no se estaba
   aplicando: el contenedor crecía con el contenido (sh==ch, sin desborde) →
   sin scrollbar y rueda muerta. Esta regla de clase con !important gana
   SIEMPRE, aunque el inline falle o el elemento se re-cree. */
.scanner-image-area.scanner-fullscreen > .scanner-scroll {
    height: calc(100vh - 90px) !important;
    max-height: calc(100vh - 90px) !important;
    flex: 0 0 auto !important;
    min-height: 0 !important;
    overflow-y: scroll !important;
    box-sizing: border-box !important;
}

.lectura-scanner-controls {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 12px;
    padding: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: background var(--transition-slow);
}

.lectura-scanner-controls .page-nav {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

/* ─── Scanner Backdrop Bar ────────────────────────────────────── */
.scanner-backdrop-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(0,0,0,0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.06);
    transition: all var(--transition-fast);
}

.scanner-dark .scanner-backdrop-bar {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.08);
}

.backdrop-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-right: 4px;
}

.scanner-dark .backdrop-label {
    color: rgba(255,255,255,0.5);
}

.backdrop-swatch {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.backdrop-swatch:hover {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,255,255,0.2);
    z-index: 2;
}

.backdrop-swatch:active {
    transform: scale(0.9);
}

.backdrop-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--bg-tertiary), 0 0 0 4px var(--accent);
    transform: scale(1.15);
}

.backdrop-swatch.active::after {
    content: '✓';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.55rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.scanner-dark .backdrop-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px #0d1117, 0 0 0 4px var(--accent);
}

.backdrop-sep {
    width: 1px;
    height: 18px;
    background: rgba(255,255,255,0.1);
    margin: 0 4px;
    flex-shrink: 0;
}

.backdrop-degree {
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    min-width: 28px;
    text-align: center;
}

/* ─── Backdrop Opacity Slider ─────────────────────────────────── */
.backdrop-opacity-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 60px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255,255,255,0.15);
    outline: none;
    cursor: pointer;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}

.backdrop-opacity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--bg-secondary);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
}

.backdrop-opacity-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px var(--accent-glow-strong);
}

.backdrop-opacity-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--bg-secondary);
    cursor: pointer;
}

.scanner-dark .backdrop-opacity-slider {
    background: rgba(255,255,255,0.12);
}

.scanner-dark .backdrop-opacity-slider::-webkit-slider-thumb {
    border-color: #0d1117;
}

.backdrop-opacity-slider:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ─── Backdrop Custom Color Picker ────────────────────────────── */
.backdrop-custom-color {
    -webkit-appearance: none;
    appearance: none;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid var(--border);
    cursor: pointer;
    padding: 0;
    background: none;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    overflow: hidden;
}

.backdrop-custom-color::-webkit-color-swatch-wrapper {
    padding: 0;
}

.backdrop-custom-color::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

.backdrop-custom-color::-moz-color-swatch {
    border: none;
    border-radius: 50%;
}

.backdrop-custom-color:hover {
    transform: scale(1.25);
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow-strong);
    z-index: 2;
}

.backdrop-custom-color:active {
    transform: scale(0.9);
}

.backdrop-custom-color:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.scanner-dark .backdrop-custom-color {
    border-color: rgba(255,255,255,0.2);
}

.scanner-dark .backdrop-custom-color:hover {
    border-color: var(--accent);
}

/* ─── Backdrop Gradient Toggle ────────────────────────────────── */
.backdrop-gradient-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border: 2px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-muted);
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.7rem;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
    line-height: 1;
}

.backdrop-gradient-toggle:hover {
    transform: scale(1.2);
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.backdrop-gradient-toggle.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--bg-tertiary), 0 0 0 4px var(--accent);
    transform: scale(1.1);
}

.scanner-dark .backdrop-gradient-toggle {
    border-color: rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.04);
}

.scanner-dark .backdrop-gradient-toggle.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px #0d1117, 0 0 0 4px var(--accent);
}

/* ─── Backdrop Gradient Swatch ────────────────────────────────── */
.backdrop-grad-swatch {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    position: relative;
}

.backdrop-grad-swatch:hover {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,255,255,0.2);
    z-index: 2;
}

.backdrop-grad-swatch:active {
    transform: scale(0.9);
}

.scanner-dark .backdrop-grad-swatch {
    border-color: rgba(255,255,255,0.15);
}
.scanner-dark .backdrop-degree {
    color: rgba(255,255,255,0.5);
}

.scanner-dark .backdrop-sep {
    background: rgba(255,255,255,0.1);
}

/* ─── Page & Ink swatch styles ───────────────────────────────────── */
.page-swatch {
    border-style: dotted !important;
}
.page-swatch.active {
    border-style: solid !important;
}
.page-swatch:hover {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,255,255,0.3);
}
.page-swatch.active::after {
    content: '📄';
    font-size: 0.45rem;
}

.ink-swatch {
    border-style: dashed !important;
}
.ink-swatch.active {
    border-style: solid !important;
}
.ink-swatch:hover {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,255,255,0.3);
}
.ink-swatch.active::after {
    content: '✒';
    font-size: 0.5rem;
}

/* ─── Scanner Reading Area Improvements ─────────────────────────── */
.lectura-reading-area.scanner-reading-mode {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: inset 0 0 60px rgba(0,0,0,0.08);
}

.lectura-reading-area .scanner-image-area {
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.lectura-reading-area .scanner-image-area img,
.lectura-reading-area .scanner-image-area canvas {
    backdrop-filter: blur(1px);
    transition: all var(--transition-normal);
}

.lectura-reading-area .scanner-image-area img:hover,
.lectura-reading-area .scanner-image-area canvas:hover {
    box-shadow: 0 6px 32px rgba(0,0,0,0.45) !important;
}

.lectura-pdf-note {
    background: rgba(108,92,231,0.08);
    border: 1px solid rgba(108,92,231,0.15);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    backdrop-filter: blur(8px);
}

.scanner-dark .lectura-pdf-note {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.08);
}

/* ─── Scanner Toolbar Filter Mode Buttons ───────────────────────── */
.btn-ghost.btn-small.btn-filter.active {
    font-weight: 700;
    transform: scale(1.1);
}

/* Grayscale */
.btn-ghost.btn-small.btn-filter.active[title="Escala de grises"] {
    background: rgba(180, 180, 200, 0.15) !important;
    border-color: #b4b4c8 !important;
    color: #b4b4c8 !important;
    box-shadow: 0 0 10px rgba(180, 180, 200, 0.2);
}

/* Dark mode */
.btn-ghost.btn-small.btn-filter.active[title="Modo oscuro"] {
    background: rgba(108, 92, 231, 0.15) !important;
    border-color: #6c5ce7 !important;
    color: #6c5ce7 !important;
    box-shadow: 0 0 10px rgba(108, 92, 231, 0.2);
}

/* Warm */
.btn-ghost.btn-small.btn-filter.active[title="Modo cálido"] {
    background: rgba(255, 160, 60, 0.15) !important;
    border-color: #ffa03c !important;
    color: #ffa03c !important;
    box-shadow: 0 0 10px rgba(255, 160, 60, 0.2);
}

/* Red Night */
.btn-ghost.btn-small.btn-filter.active[title="Nocturno rojo"] {
    background: rgba(255, 50, 50, 0.15) !important;
    border-color: #ff3232 !important;
    color: #ff3232 !important;
    box-shadow: 0 0 10px rgba(255, 50, 50, 0.2);
}

/* E-ink */
.btn-ghost.btn-small.btn-filter.active[title="Tinta electrónica"] {
    background: rgba(100, 200, 100, 0.15) !important;
    border-color: #64c864 !important;
    color: #64c864 !important;
    box-shadow: 0 0 10px rgba(100, 200, 100, 0.2);
}

/* High Contrast */
.btn-ghost.btn-small.btn-filter.active[title="Alto contraste"] {
    background: rgba(255, 200, 50, 0.15) !important;
    border-color: #ffc832 !important;
    color: #ffc832 !important;
    box-shadow: 0 0 10px rgba(255, 200, 50, 0.2);
}

/* ─── Matte Swatch ───────────────────────────────────────────────── */
.matte-swatch {
    border-style: dashed !important;
}

.matte-swatch.active {
    border-style: solid !important;
}

.matte-swatch:hover {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,255,255,0.3);
}

.matte-swatch.active::after {
    content: '✦';
    font-size: 0.5rem;
}

.scanner-backdrop-bar .btn-ghost.btn-smaller {
    font-size: 0.75rem;
    padding: 3px 6px;
    border-radius: var(--radius-sm);
}

/* ─── Enhance Plugin CSS ──────────────────────────────────── */

.plugin-marketplace {
    padding: 8px 0;
}

.plugin-header {
    margin-bottom: 20px;
}

.plugin-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.plugin-header .plugin-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.plugin-controls {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.plugin-controls .plugin-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.plugin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.plugin-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    transition: all var(--transition-fast) !important;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.plugin-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-subtle));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.plugin-card:hover {
    border-color: var(--accent-glow-strong) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--accent-glow) !important;
}

.plugin-card:hover::before {
    opacity: 1;
}

.plugin-card .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.plugin-card .card-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.plugin-card .card-info {
    flex: 1;
    min-width: 0;
}

.plugin-card .card-name {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.plugin-card .card-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.plugin-card .tool-check {
    opacity: 0.6;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.plugin-card:hover .tool-check {
    opacity: 1;
    transform: scale(1.15);
}

.plugin-card .card-description {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.plugin-card .card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
}

.plugin-card .card-author {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.plugin-stats-footer {
    margin-top: 24px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

/* ═══════════════════════════════════════════════════════════════════
   Converter Module — Image Conversion & URL Shortener
   ═══════════════════════════════════════════════════════════════════ */

.converter-section-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

/* ─── Slider controls (brightness, contrast, saturation) ──────── */
.slider-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-label-icon {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ─── Button rows (rotate, flip, resize) ──────────────────────── */
.btn-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.btn-row-inline {
    display: flex;
    gap: 6px;
}

.btn-row-wide {
    display: flex;
    gap: 10px;
}

/* ─── Crop grid ─────────────────────────────────────────────────── */
.crop-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 6px;
}

/* ─── URL Shortener ─────────────────────────────────────────────── */
.url-section-title {
    margin-bottom: 12px;
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.url-section-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.url-input-row {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.url-input-row input {
    flex: 1;
}

.url-result-box {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--success);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.url-result-code {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--success);
    flex: 1;
}

.url-saved-title {
    margin: 16px 0 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.url-empty-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.url-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.url-list-item-inner {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: background var(--transition-slow), border-color var(--transition-slow);
}

.url-list-code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    min-width: 100px;
}

.url-list-url {
    flex: 1;
    font-size: 0.75rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-list-delete {
    color: var(--error);
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.url-list-delete:hover {
    background: var(--error-bg);
    transform: scale(1.1);
}

.url-clear-btn {
    margin-top: 8px;
    align-self: flex-start;
}

/* ═══════════════════════════════════════════════════════════════════
   Lectura — Reading Aids & Scanner View Improvements
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Reading Ruler ────────────────────────────────────────────── */
.lectura-ruler {
    pointer-events: none;
    z-index: 5;
    opacity: 0.8;
    transition: opacity 0.1s ease;
}

.lectura-reading-area:hover .lectura-ruler {
    opacity: 1;
}

/* ─── Reading Aids Bar ────────────────────────────────────────── */
.lectura-reading-aids {
    margin-top: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    transition: all var(--transition-slow);
}

.reading-aids-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.reading-aids-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.aid-group {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
}

.aid-group:hover {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

.aid-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    line-height: 1;
    display: flex;
    align-items: center;
}

.aid-font-select {
    font-size: 0.7rem !important;
    padding: 2px 4px !important;
    max-width: 100px;
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
    color: var(--text-primary) !important;
}

/* ─── Smaller button variant ──────────────────────────────────── */
.btn-smaller {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    padding: 0;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    line-height: 1;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.btn-smaller:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-smaller.active {
    background: var(--accent-glow);
    color: var(--accent);
    border-color: var(--accent-glow-strong);
}

/* ─── PDF Note & Fallback ─────────────────────────────────────── */
.lectura-pdf-note {
    background: var(--info-bg);
    border: 1px solid var(--info);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.lectura-pdf-fallback {
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
}

.lectura-pdf-fallback p {
    margin-bottom: 8px;
    font-size: 0.85rem;
}

.lectura-pdf-fallback p:first-child {
    font-weight: 600;
    color: var(--warning);
}

/* ─── Scanner View Enhanced Styles ──────────────────────────── */
.scanner-image-area {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    /* Scroll anchoring de Chromium/WebView2: mueve el scrollTop solo al crecer
       el contenido (canvas del PDF página a página, imagen 0→tamaño real) y
       hace que la vista "baje por sí sola" al abrir un archivo. Se desactiva. */
    overflow-anchor: none;
    transition: all 0.3s ease;
}

/* El contenedor interno de scroll (imagen y PDF) también ignora el scroll
   anchoring para que el scroll de la rueda sea 100% determinista. */
.scanner-image-area > div {
    overflow-anchor: none;
}

/* ─── Scrollbar visible (Scanner View + modo texto) ─────────────
   El usuario puede scrollear con la rueda O arrastrando la barra lateral.
   Se usa SOLO el estilo ::-webkit-scrollbar (12px): en WebView2/MSI la
   propiedad 'scrollbar-width: thin' encoge la barra y la hace difícil de
   agarrar, y sin estilos webkit la barra queda oculta (overlay). */
.scanner-scroll,
.lectura-reading-area {
    overflow-anchor: none;
}

.scanner-scroll::-webkit-scrollbar,
.lectura-reading-area::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.scanner-scroll::-webkit-scrollbar-track,
.lectura-reading-area::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
}

.scanner-scroll::-webkit-scrollbar-thumb,
.lectura-reading-area::-webkit-scrollbar-thumb {
    background: rgba(108, 92, 231, 0.6);
    border-radius: 6px;
    border: 2px solid rgba(0, 0, 0, 0.3);
}

.scanner-scroll::-webkit-scrollbar-thumb:hover,
.lectura-reading-area::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

.scanner-dark .scanner-scroll::-webkit-scrollbar-thumb,
.scanner-dark .lectura-reading-area::-webkit-scrollbar-thumb {
    background: rgba(162, 155, 254, 0.65);
}

/* ─── Barra de scroll personalizada (fullscreen del scanner) ─────
   La barra nativa de WebView2 puede no mostrarse (scrollbars overlay de
   Windows) y la rueda puede fallar: esta barra es un <div> fijo que SIEMPRE
   se ve y se arrastra con el mouse (manipula scrollTop directamente). */
.lectura-custom-scrollbar {
    position: fixed;
    width: 10px;
    z-index: 2147483000;
    border-radius: 5px;
    display: none;
    user-select: none;
    touch-action: none;
    /* Fondo claro (sepia/claro): pista oscura translúcida */
    background: rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(0, 0, 0, 0.22);
}

/* Modos nocturnos (.scanner-dark): pista clara translúcida */
.lectura-custom-scrollbar.dark {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.lectura-custom-scrollbar-thumb {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: rgba(108, 92, 231, 0.75);
    border-radius: 5px;
    cursor: grab;
    transition: background 0.15s ease;
}

.lectura-custom-scrollbar-thumb:hover {
    background: var(--accent);
}

.lectura-custom-scrollbar-thumb:active {
    cursor: grabbing;
}

.scanner-image-area:hover {
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.scanner-image-area img,
.scanner-image-area canvas {
    transition: filter 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    cursor: zoom-in;
}

/* El cursor de arrastre (pan) solo aparece cuando la hoja desborda el
   contenedor (zoom > 100%, clase scanner-pan-enabled). Si no desborda,
   el arrastre no haría nada, así que el cursor grab no debe engañar. */
.scanner-image-area.scanner-pan-enabled img:hover,
.scanner-image-area.scanner-pan-enabled canvas:hover {
    cursor: grab;
}

.scanner-image-area.scanner-pan-enabled img:active,
.scanner-image-area.scanner-pan-enabled canvas:active {
    cursor: grabbing;
}

/* Fullscreen mode - backdrop se mantiene */
.scanner-image-area.scanner-fullscreen img,
.scanner-image-area.scanner-fullscreen canvas {
    border-radius: 12px;
}

.scanner-image-area.scanner-fullscreen .fullscreen-toggle-btn {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 99999;
}

/* Botón de pantalla completa mejorado */
.fullscreen-toggle-btn {
    opacity: 0.7;
    transition: all 0.2s ease;
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.fullscreen-toggle-btn:hover {
    opacity: 1;
    transform: scale(1.12);
    background: rgba(108,92,231,0.7);
    border-color: var(--accent);
    box-shadow: 0 0 24px rgba(108,92,231,0.4);
}

.fullscreen-toggle-btn:active {
    transform: scale(0.95);
}

/* ─── D-pad flotante de navegación (solo fullscreen) ────────── */
/* Botones para subir/bajar/desplazarse por la hoja ampliada en pantalla
   completa. Robusto en MSI/WebView2: solo manipulan el scroll interno del
   contenedor, sin depender de eventos de puntero ni pointer capture. */
.scanner-nav-pad {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    opacity: 0.65;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.scanner-nav-pad:hover {
    opacity: 1;
}

/* El D-pad flotante solo tiene sentido en fullscreen (hoja ampliada): fuera,
   el scroll se hace con la rueda y la barra nativa del contenedor. */
.scanner-image-area:not(.scanner-fullscreen) .scanner-nav-pad {
    display: none;
}

.nav-pad-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-pad-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    user-select: none;
    -webkit-user-select: none;
}

.nav-pad-btn:hover {
    background: rgba(108, 92, 231, 0.7);
    border-color: var(--accent);
    transform: scale(1.12);
    box-shadow: 0 0 18px rgba(108, 92, 231, 0.45);
}

.nav-pad-btn:active {
    transform: scale(0.92);
}

.nav-pad-zoom {
    min-width: 46px;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

/* Barra de backdrop mejorada */
.scanner-backdrop-bar {
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
    gap: 8px;
}

.scanner-backdrop-bar:hover {
    border-color: rgba(255,255,255,0.15);
    background: rgba(0,0,0,0.2);
}

.backdrop-swatch {
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    border-width: 2.5px;
}

.backdrop-grad-swatch {
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: 1.5px solid rgba(255,255,255,0.1);
}

.backdrop-grad-swatch:hover {
    transform: scale(1.25);
    border-color: rgba(255,255,255,0.3);
}

/* Toolbar filter buttons mejorados */
.btn-ghost.btn-small.btn-filter {
    font-size: 1rem;
    padding: 3px 7px;
    border-radius: 6px;
    transition: all 0.2s ease;
    position: relative;
    line-height: 1;
}

.btn-ghost.btn-small.btn-filter:hover {
    transform: scale(1.18);
    background: rgba(255,255,255,0.1);
}

.btn-ghost.btn-small.btn-filter:active {
    transform: scale(0.92);
}

/* Valor numérico en toolbar */
.toolbar-value {
    min-width: 36px;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Transiciones suaves para cambios de filtro */
.scanner-reading-mode {
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.scanner-reading-mode .scanner-image-area {
    transition: all 0.3s ease;
}

/* Scrollbar elegante para el área de imagen */
.scanner-image-area::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.scanner-image-area::-webkit-scrollbar-track {
    background: transparent;
}

.scanner-image-area::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
    border-radius: 3px;
}

.scanner-image-area::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.25);
}

/* Scanner controls para PDF */
.lectura-scanner-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.lectura-scanner-controls .page-nav {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    min-width: 60px;
    text-align: center;
}

/* Backdrop degree display */
.backdrop-degree {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
    min-width: 28px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

/* Mejora del slider de opacidad */
.backdrop-opacity-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 60px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255,255,255,0.15);
    outline: none;
    cursor: pointer;
}

.backdrop-opacity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 0 8px rgba(108,92,231,0.4);
}

.backdrop-opacity-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 14px rgba(108,92,231,0.6);
}

.backdrop-opacity-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid rgba(255,255,255,0.3);
    cursor: pointer;
}

.scanner-dark .backdrop-opacity-slider {
    background: rgba(255,255,255,0.08);
}

/* Toolbar separators */
.toolbar-separator {
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.08);
    margin: 0 4px;
    flex-shrink: 0;
}

/* Animación suave al cargar imagen */
.scanner-image-area img,
.scanner-image-area canvas {
    animation: scannerImgFadeIn 0.3s ease;
}

@keyframes scannerImgFadeIn {
    from {
        opacity: 0;
        transform: scale(0.98);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ─── Lectura: páginas continuas (PDF tipo libro) ────────────────── */
.pdf-pages-container { width: 100%; }

.pdf-page-wrap {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 0 16px;
}

.pdf-page-wrap canvas {
    display: block;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.35);
    background: #fff;
}

/* ─── Lupa flotante (zoom) ───────────────────────────────────────── */
.scanner-zoom-pill {
    position: absolute;
    left: 14px;
    bottom: 14px;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 999px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    font-size: 1rem;
    cursor: default;
    user-select: none;
    -webkit-user-select: none;
}

.zoom-pill-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: #fff;
    font-size: 1.05rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.zoom-pill-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.12);
    box-shadow: 0 0 14px rgba(108,92,231,0.5);
}

.zoom-pill-btn:active { transform: scale(0.92); }

.zoom-pill-value {
    min-width: 46px;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

/* ─── Barra TTS (lector por voz) ─────────────────────────────────── */
.lectura-tts-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.lectura-tts-bar .tts-icon { font-size: 1.15rem; }

.tts-play-btn { min-width: 92px; }

.tts-play-btn.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.tts-voice-select { max-width: 220px; font-size: 0.78rem; }

/* ─── Lectura: TTS en pantalla completa + resaltador en vivo ── */
.lectura-tts-bar.lectura-tts-fullscreen {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 60;
    max-width: calc(100% - 40px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

.pdf-page-wrap {
    position: relative;
}

.pdf-text-layer {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: top left;
    pointer-events: none;
    z-index: 2;
    overflow: hidden;
}

.pdf-text-item {
    position: absolute;
    transform-origin: 0 0;
    color: transparent;
    white-space: pre;
    line-height: 1;
}

.pdf-text-item.tts-live {
    color: transparent;
    background: rgba(255, 213, 79, 0.45);
    border-radius: 3px;
}

.tts-word-highlight {
    position: absolute;
    background: rgba(255, 213, 79, 0.4);
    border-radius: 3px;
    pointer-events: none;
    z-index: 6;
}

/* ─── Plugin System ─────────────────────────────────────────────── */
.plugin-module { display: flex; flex-direction: column; gap: 16px; }
.plugin-tabs { display: flex; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.plugin-tab-btn { background: none; border: 1px solid var(--border); color: var(--text-secondary); padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 0.85rem; transition: all .2s; }
.plugin-tab-btn:hover { border-color: var(--accent); color: var(--text-secondary); }
.plugin-tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.plugin-tab-body { animation: fadeIn .25s ease; }

/* Manager */
.plugin-install-form { display: flex; flex-direction: column; gap: 10px; }
.plugin-install-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.plugin-section-title { font-size: 0.95rem; color: var(--text-secondary); margin: 12px 0 8px; }
.plugin-error-box { display: flex; align-items: center; justify-content: space-between; gap: 8px; background: rgba(255,107,107,.12); border: 1px solid #ff6b6b; color: #ff6b6b; padding: 8px 12px; border-radius: 8px; font-size: 0.8rem; }
.plugin-list { display: flex; flex-direction: column; gap: 10px; }
.plugin-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 12px; flex-wrap: wrap; }
.plugin-row-info { flex: 1; min-width: 180px; display: flex; flex-direction: column; gap: 2px; }
.plugin-row-meta { font-size: 0.72rem; color: var(--text-muted); }
.plugin-row-desc { font-size: 0.8rem; color: var(--text-secondary); }
.plugin-status { font-size: 0.68rem; font-weight: 700; padding: 3px 8px; border-radius: 20px; letter-spacing: .05em; }
.plugin-status.on { background: rgba(46,213,115,.15); color: #2ed573; }
.plugin-status.off { background: rgba(255,107,107,.15); color: #ff6b6b; }
.plugin-row-actions { display: flex; gap: 6px; }
.btn-danger { color: #ff6b6b !important; border-color: rgba(255,107,107,.4) !important; }

/* Empty / errors */
.plugin-empty { text-align: center; color: var(--text-muted); padding: 32px 16px; }
.plugin-empty-hint { font-size: 0.8rem; margin-top: 6px; }
.plugin-preview-error, .pg-parse-err { color: #ff6b6b; font-size: 0.8rem; font-family: var(--font-mono); padding: 10px; background: rgba(255,107,107,.08); border-radius: 8px; white-space: pre-wrap; }
.pg-parse-ok { color: #2ed573; font-size: 0.75rem; padding: 4px 2px; }

/* iframe sandbox */
.plugin-iframe { width: 100%; min-height: 520px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-secondary); display: block; }

/* Playground */
.plugin-playground { display: flex; flex-direction: column; gap: 12px; }
.pg-toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pg-label { font-size: 0.8rem; color: var(--text-secondary); }
.pg-spacer { flex: 1; }
.pg-body { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
@media (max-width: 900px) { .pg-body { grid-template-columns: 1fr; } }
.pg-col { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.plugin-editor { width: 100%; min-height: 420px; font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.5; background: #12121c; color: #d8d8e8; border: 1px solid var(--border); border-radius: 12px; padding: 12px; resize: vertical; white-space: pre; }
.plugin-console { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.plugin-console-title { font-size: 0.7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); padding: 6px 12px; background: var(--bg-tertiary); border-bottom: 1px solid var(--border); }
.plugin-console-body { max-height: 160px; overflow-y: auto; padding: 8px 12px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-secondary); display: flex; flex-direction: column; gap: 2px; }
.pg-console-empty { color: var(--text-muted); font-style: italic; }
.pg-console-line { white-space: pre-wrap; word-break: break-all; }

/* Docs */
.plugin-docs { font-size: 0.85rem; line-height: 1.6; max-width: 780px; }
.plugin-docs h3 { margin-bottom: 10px; }
.plugin-docs h4 { margin: 18px 0 8px; color: var(--accent); }
.plugin-docs pre { background: #12121c; color: #d8d8e8; padding: 12px; border-radius: 10px; overflow-x: auto; font-size: 0.76rem; font-family: var(--font-mono); }
.plugin-docs code { background: rgba(108,92,231,.15); color: var(--accent); padding: 1px 5px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.78em; }
.plugin-docs table { width: 100%; border-collapse: collapse; margin: 10px 0; }
.plugin-docs th, .plugin-docs td { text-align: left; padding: 6px 10px; border: 1px solid var(--border); font-size: 0.8rem; vertical-align: top; }
.plugin-docs th { background: var(--bg-tertiary); }

/* Sidebar plugins section */
.plugin-sidebar-nav { border-top: 1px solid var(--border); margin-top: 10px; padding-top: 10px; }
.plugin-tool-item { width: 100%; }