/* ======================================================
   Tutoriel C# - CSS Partagé (Refactored)
   Version moderne avec Glassmorphism et design premium
   ====================================================== */

/* === VARIABLES CSS GLOBALES === */
:root {
    --transition-speed: 0.3s;
    --base-font-size: 18px;
    --toolbar-blur: 12px;
    --toolbar-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);

    /* Fonts */
    --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-body: 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Fira Code', monospace;
}

/* === THÈMES === */

/* Thème Clair (Light) */
[data-theme="light"] {
    --bg-body: #ffffff;
    --bg-panel: rgba(248, 249, 250, 0.85);
    --text-main: #2c3e50;
    --text-heading: #1a252f;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --code-bg: #f8f9fa;
    --code-border: #e9ecef;
    --border-color: rgba(0, 0, 0, 0.08);
    --table-header: #f2f2f2;
    --table-row-even: #f9f9f9;
    --blockquote-bg: #eef9fd;
    --blockquote-border: #3498db;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --diagram-bg: #ffffff;
    --diagram-border: #3498db;
    --diagram-arrow: #2c3e50;
    --highlight-color: rgba(255, 241, 118, 0.5);
    --toolbar-bg: rgba(255, 255, 255, 0.75);
    --diagram-lazy-bg: rgba(52, 152, 219, 0.05);
    --diagram-exec-bg: rgba(231, 76, 60, 0.05);
    --diagram-exec-border: #e74c3c;
    --console-bg: #1e1e1e;
    --console-text: #d4d4d4;
    --warning-bg: #fff3cd;
    --warning-border: #ffc107;
    --warning-text: #856404;
}

/* Thème Sépia */
[data-theme="sepia"] {
    --bg-body: #f4ecd8;
    --bg-panel: rgba(233, 224, 201, 0.9);
    --text-main: #433422;
    --text-heading: #2c2216;
    --accent-color: #d35400;
    --accent-hover: #a04000;
    --code-bg: #e4d8b8;
    --code-border: #d0c4a5;
    --border-color: rgba(67, 52, 34, 0.15);
    --table-header: #e9e0c9;
    --table-row-even: #ede6d3;
    --blockquote-bg: #e9e0c9;
    --blockquote-border: #d35400;
    --box-shadow: 0 4px 6px rgba(67, 52, 34, 0.1);
    --diagram-bg: #f4ecd8;
    --diagram-border: #d35400;
    --diagram-arrow: #433422;
    --highlight-color: rgba(211, 84, 0, 0.2);
    --toolbar-bg: rgba(244, 236, 216, 0.85);
    --diagram-lazy-bg: rgba(211, 84, 0, 0.05);
    --diagram-exec-bg: rgba(192, 57, 43, 0.05);
    --diagram-exec-border: #c0392b;
    --console-bg: #433422;
    --console-text: #f4ecd8;
    --warning-bg: #f9f1d8;
    --warning-border: #d35400;
    --warning-text: #5e4534;
}

/* Thème Sombre (Dark) */
[data-theme="dark"] {
    --bg-body: #1e1e1e;
    --bg-panel: rgba(37, 37, 38, 0.9);
    --text-main: #d4d4d4;
    --text-heading: #ffffff;
    --accent-color: #569cd6;
    --accent-hover: #4a8bc2;
    --code-bg: #2d2d2d;
    --code-border: #3e3e42;
    --border-color: rgba(255, 255, 255, 0.1);
    --table-header: #333333;
    --table-row-even: #252526;
    --blockquote-bg: #252526;
    --blockquote-border: #569cd6;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --diagram-bg: #2d2d2d;
    --diagram-border: #569cd6;
    --diagram-arrow: #d4d4d4;
    --highlight-color: rgba(86, 156, 214, 0.25);
    --toolbar-bg: rgba(30, 30, 30, 0.85);
    --diagram-lazy-bg: rgba(78, 201, 176, 0.05);
    --diagram-exec-bg: rgba(231, 76, 60, 0.1);
    --diagram-exec-border: #e74c3c;
    --console-bg: #000000;
    --console-text: #cccccc;
    --warning-bg: #332b00;
    --warning-border: #ffc107;
    --warning-text: #ffda6a;
}

/* === STYLES DE BASE === */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.8;
    font-size: var(--base-font-size);
    color: var(--text-main);
    background-color: var(--bg-body);
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 24px;
    padding-top: 70px;
    /* Space for desktop toolbar */
    transition: background-color var(--transition-speed),
        color var(--transition-speed);
}

/* === TYPOGRAPHIE === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-heading);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 15px;
    font-size: 2.2em;
}

h2 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    font-size: 1.6em;
}

h3 {
    font-size: 1.3em;
}

h4 {
    font-size: 1.1em;
}

p {
    margin-bottom: 1.5em;
    text-align: justify;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* === SURLIGNAGE AUDIO === */
.highlight-active {
    background-color: var(--highlight-color);
    border-radius: 4px;
    box-shadow: 0 0 0 4px var(--highlight-color);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

/* === FLOATING ACTION BUTTON (FAB) - SPEED DIAL MOBILE === */
.fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: none;
    /* Hidden on desktop - shown on mobile via media query */
    width: 56px;
    height: 56px;
}

/* Main FAB Button */
.fab-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(52, 152, 219, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1010;
    position: absolute;
    bottom: 0;
    right: 0;
}

.fab-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(52, 152, 219, 0.5);
}

.fab-toggle.open {
    transform: rotate(45deg);
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    box-shadow: 0 4px 20px rgba(231, 76, 60, 0.4);
}

/* Hide main toggle when a submenu is active (buttons overlay it) */
.fab-container.submenu-active .fab-toggle {
    opacity: 0;
    transform: rotate(45deg) scale(0.5);
    pointer-events: none;
}

/* Speed Dial - Primary Actions Container */
.fab-speed-dial {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 56px;
    height: 56px;
    pointer-events: none;
}

/* Action Wrapper - Container for each orbiting button */
.fab-action-wrapper {
    position: absolute;
    top: 6px;
    left: 6px;
    opacity: 0;
    transform: translate(0, 0) scale(0.5);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 1005;
}

/* Orbiting Action Buttons */
.fab-action {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-panel);
    /* Plus opaque et contrasté */
    border: 1px solid var(--border-color);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--accent-color);
    /* Icône en couleur d'accent */
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fab-action:hover {
    transform: scale(1.1);
    background: var(--accent-color);
    /* Inversion au survol */
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}



.fab-action.active {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    border-color: var(--accent-color);
}

/* Speed Dial Open State - All wrappers become visible */
.fab-container.open .fab-action-wrapper {
    opacity: 1;
    pointer-events: auto;
}

/* Masquer les boutons inactifs quand un sous-menu est ouvert */
/* Masquer les boutons inactifs quand un sous-menu est ouvert */
.fab-container.submenu-active .fab-action-wrapper:not(.active) {
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

/* Bouton actif : retourne au centre (Merge) et passe au-dessus du toggle */
/* Bouton actif : retourne au centre (Merge), s'agrandit pour matcher le toggle */
.fab-container.submenu-active .fab-action-wrapper.active {
    transform: translate(0, 0) scale(1.27) !important;
    /* Scale 1.27 de 44px -> ~56px */
    z-index: 1015;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Apparence du bouton interne quand actif (Style rouge du toggle + rotation) */
.fab-container.submenu-active .fab-action-wrapper.active .fab-action {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    box-shadow: 0 4px 20px rgba(231, 76, 60, 0.4);
    border-color: transparent;
    color: white;
    transform: rotate(45deg);
}



/* Position wrappers in arc via transform (from center, using data-action selectors) */
/* Arc en quart de cercle - espacement régulier - rayon 110px */
.fab-container.open .fab-action-wrapper[data-action="lang"] {
    transform: translate(-110px, 0) scale(1);
    /* 180° - Gauche */
    transition-delay: 0ms;
}

.fab-container.open .fab-action-wrapper[data-action="audio"] {
    transform: translate(-95px, -55px) scale(1);
    /* 150° - Diagonale gauche-haut */
    transition-delay: 50ms;
}

.fab-container.open .fab-action-wrapper[data-action="zoom"] {
    transform: translate(-55px, -95px) scale(1);
    /* 120° - Diagonale haut-gauche */
    transition-delay: 100ms;
}

.fab-container.open .fab-action-wrapper[data-action="theme"] {
    transform: translate(0, -110px) scale(1);
    /* 90° - Haut */
    transition-delay: 150ms;
}

/* ================================================
   2ème ORBITE - Sous-menus orbitaux
   ================================================ */

/* Container pour les items de sous-menu */
.fab-submenu {
    position: absolute;
    top: 0;
    left: 0;
    width: 44px;
    height: 44px;
    pointer-events: none;
}

/* Items de sous-menu - orbite autour du bouton parent */
.fab-submenu-item {
    position: absolute;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-panel);
    color: var(--accent-color);
    /* Icône colorée */
    border: 1px solid var(--border-color);
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: scale(0.3);
    pointer-events: none;
    z-index: 1025;
    top: 4px;
    left: 4px;
}

.fab-submenu-item:hover {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 5px 20px rgba(52, 152, 219, 0.5);
    filter: brightness(1.1);
}

/* État ouvert - Items visibles */
.fab-submenu.open .fab-submenu-item {
    opacity: 1;
    pointer-events: auto;
}

/* ---- LANGUE : 2 items (Arc Haut-Gauche) ---- */
.fab-submenu.submenu-lang.open .fab-submenu-item:nth-child(1) {
    transform: translate(-70px, -15px) scale(1);
    transition-delay: 0ms;
}

.fab-submenu.submenu-lang.open .fab-submenu-item:nth-child(2) {
    transform: translate(-15px, -70px) scale(1);
    transition-delay: 50ms;
}

/* ---- AUDIO : 4 items (Arc Haut-Gauche) ---- */
.fab-submenu.submenu-audio.open .fab-submenu-item:nth-child(1) {
    transform: translate(-100px, 0px) scale(1);
    transition-delay: 0ms;
}

.fab-submenu.submenu-audio.open .fab-submenu-item:nth-child(2) {
    transform: translate(-80px, -55px) scale(1);
    transition-delay: 50ms;
}

.fab-submenu.submenu-audio.open .fab-submenu-item:nth-child(3) {
    transform: translate(-40px, -95px) scale(1);
    transition-delay: 100ms;
}

.fab-submenu.submenu-audio.open .fab-submenu-item:nth-child(4) {
    transform: translate(15px, -110px) scale(1);
    transition-delay: 150ms;
}

/* ---- ZOOM : items + display ---- */
.fab-submenu.submenu-zoom.open .fab-submenu-item:nth-child(1) {
    transform: translate(-50px, -25px) scale(1);
    transition-delay: 0ms;
}

.fab-submenu.submenu-zoom .fab-zoom-display {
    position: absolute;
    width: 44px;
    height: 32px;
    border-radius: 16px;
    background: var(--toolbar-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    opacity: 0;
    transform: scale(0.3);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    top: 6px;
    left: 0;
    z-index: 1025;
    cursor: pointer;
    pointer-events: none;
}

.fab-submenu.submenu-zoom.open .fab-zoom-display {
    pointer-events: auto;
}

.fab-submenu.submenu-zoom .fab-zoom-display:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* ---- ZOOM : items + display (Arc Haut-Gauche) ---- */
.fab-submenu.submenu-zoom.open .fab-submenu-item:nth-child(1) {
    transform: translate(-90px, -10px) scale(1);
    transition-delay: 0ms;
}

/* ... Style du display (omis pour brièveté de diff, non modifié sauf position) ... */

.fab-submenu.submenu-zoom.open .fab-zoom-display {
    opacity: 1;
    transform: translate(-60px, -60px) scale(1);
    transition-delay: 50ms;
}

.fab-submenu.submenu-zoom.open .fab-submenu-item:nth-child(3) {
    transform: translate(-10px, -90px) scale(1);
    transition-delay: 100ms;
}

/* ---- THEME : 3 items (Arc Haut-Gauche) ---- */
.fab-submenu.submenu-theme.open .fab-submenu-item:nth-child(1) {
    transform: translate(-90px, -10px) scale(1);
    transition-delay: 0ms;
}

.fab-submenu.submenu-theme.open .fab-submenu-item:nth-child(2) {
    transform: translate(-60px, -60px) scale(1);
    transition-delay: 50ms;
}

.fab-submenu.submenu-theme.open .fab-submenu-item:nth-child(3) {
    transform: translate(-10px, -90px) scale(1);
    transition-delay: 100ms;
}



/* Boutons de thème */
.fab-theme-btn.btn-light {
    background: linear-gradient(135deg, #fafafa 0%, #e0e0e0 100%);
    border-color: #ccc;
}

.fab-theme-btn.btn-sepia {
    background: linear-gradient(135deg, #f5e6d3 0%, #d4c4a8 100%);
    border-color: #c4a98c;
}

.fab-theme-btn.btn-dark {
    background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
    border-color: #444;
}

/* Boutons de langue */
.fab-lang-btn {
    color: var(--text-color);
    font-weight: 700;
}

.fab-theme-btn.btn-dark {
    background: #1a1a2e;
    border-color: #3a3a5e;
}

/* Zoom display in submenu */
.fab-zoom-display {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-main);
    min-width: 40px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Desktop Toolbar - Visible on desktop, hidden on mobile */
.reader-toolbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--toolbar-bg);
    padding: 12px 24px;
    border-radius: 50px;
    box-shadow: var(--toolbar-shadow);
    z-index: 1000;
    display: flex;
    /* Visible on desktop */
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border-color);
    -webkit-backdrop-filter: blur(var(--toolbar-blur));
    backdrop-filter: blur(var(--toolbar-blur));
    transition: all var(--transition-speed);
}

.tool-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
}

/* === SELECT / DROPDOWNS === */
select {
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-main);
    font-family: var(--font-primary);
    font-size: 0.9em;
    cursor: pointer;
    outline: none;
    transition: all var(--transition-speed);
}

select:hover {
    border-color: var(--accent-color);
}

select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* === BOUTONS === */
.theme-btn,
.audio-btn,
.zoom-btn,
.audio-ctrl-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.theme-btn:hover,
.audio-btn:hover,
.zoom-btn:hover,
.audio-ctrl-btn:hover {
    transform: scale(1.1);
}

.theme-btn.active {
    border-color: var(--text-main);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
}

.btn-light {
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    border: 1px solid #ccc;
}

.btn-sepia {
    background: linear-gradient(135deg, #f4ecd8 0%, #e4d8b8 100%);
    border: 1px solid #d0c4a5;
}

.btn-dark {
    background: linear-gradient(135deg, #2d2d2d 0%, #1e1e1e 100%);
    border: 1px solid #555;
}

.audio-btn {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    border: none;
    width: 38px;
    height: 38px;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.audio-btn.speaking {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    animation: pulse 1.5s infinite;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.4);
}

.audio-ctrl-btn,
.zoom-btn {
    background: var(--bg-body);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    font-weight: bold;
    font-family: var(--font-mono);
    font-size: 16px;
}

.audio-ctrl-btn:hover,
.zoom-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

#zoomLevel {
    font-family: var(--font-primary);
    font-size: 0.85em;
    font-weight: 600;
    color: var(--text-main);
    min-width: 45px;
    text-align: center;
}

/* Animation Pulse pour Audio */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(231, 76, 60, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}

/* Animation Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* === BLOCS DE CODE (VS Code Style) === */
pre {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--accent-color);
    border-radius: 8px;
    padding: 16px 20px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85em;
    line-height: 1.6;
    box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.05);
    margin: 20px 0;
    position: relative; /* Pour positionner le bouton de copie */
}

/* Bouton Copier le Code */
.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--toolbar-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-main);
    padding: 4px 8px;
    font-size: 14px;
    cursor: pointer;
    opacity: 0; /* Caché par défaut */
    transition: opacity var(--transition-speed), background-color var(--transition-speed);
    z-index: 10;
}

pre:hover .copy-btn {
    opacity: 1; /* Affiché au survol du bloc de code */
}

.copy-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.copy-btn.copied {
    background: #27ae60; /* Vert de succès */
    color: white;
    border-color: #27ae60;
}

code {
    font-family: var(--font-mono);
}

/* Coloration Syntaxique - Light Theme */
.kwd {
    color: #0000ff;
    font-weight: bold;
}

.str {
    color: #a31515;
}

.com {
    color: #008000;
    font-style: italic;
}

.typ {
    color: #2b91af;
}

.num {
    color: #098658;
}

.tag {
    color: #800000;
}

/* Coloration Syntaxique - Dark Theme */
[data-theme="dark"] .kwd {
    color: #569cd6;
}

[data-theme="dark"] .str {
    color: #ce9178;
}

[data-theme="dark"] .com {
    color: #6a9955;
}

[data-theme="dark"] .typ {
    color: #4ec9b0;
}

[data-theme="dark"] .num {
    color: #b5cea8;
}

[data-theme="dark"] .tag {
    color: #569cd6;
}

/* Coloration Syntaxique - Sepia Theme */
[data-theme="sepia"] .kwd {
    color: #8b4513;
    font-weight: bold;
}

[data-theme="sepia"] .str {
    color: #a0522d;
}

[data-theme="sepia"] .com {
    color: #6b8e23;
    font-style: italic;
}

[data-theme="sepia"] .typ {
    color: #b8860b;
}

[data-theme="sepia"] .num {
    color: #228b22;
}

[data-theme="sepia"] .tag {
    color: #00008b;
}

/* === CONSOLE OUTPUT === */
.console-output {
    background-color: var(--console-bg);
    color: var(--console-text);
    padding: 14px 18px;
    border-radius: 0 0 8px 8px;
    font-family: var(--font-mono);
    font-size: 0.8em;
    margin-top: -8px;
    margin-bottom: 25px;
    border-left: 4px solid #777;
    white-space: pre-wrap;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.console-output::before {
    content: "Terminal Output:";
    display: block;
    font-size: 0.7em;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 8px;
    border-bottom: 1px solid #444;
    padding-bottom: 5px;
    letter-spacing: 0.5px;
}

/* === TABLEAUX === */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 25px 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--box-shadow);
}

th,
td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--table-header);
    font-weight: 700;
    font-family: var(--font-primary);
    text-transform: uppercase;
    font-size: 0.8em;
    letter-spacing: 0.5px;
}

tr:last-child td {
    border-bottom: none;
}

tr:nth-child(even) {
    background-color: var(--table-row-even);
}

tr:hover {
    background-color: var(--highlight-color);
}

/* === CITATIONS === */
blockquote {
    background-color: var(--blockquote-bg);
    border-left: 5px solid var(--blockquote-border);
    margin: 25px 0;
    padding: 18px 25px;
    font-style: italic;
    border-radius: 0 8px 8px 0;
}

/* === HEADER INFO === */
.header-info {
    background: linear-gradient(135deg, var(--bg-panel) 0%, var(--table-row-even) 100%);
    padding: 20px 25px;
    border-radius: 12px;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
    box-shadow: var(--box-shadow);
    font-family: var(--font-primary);
    font-size: 0.9em;
}

.header-info p {
    margin: 8px 0;
    text-align: left;
}

/* === DIAGRAMMES === */
.diagram-container {
    margin: 30px 0;
    text-align: center;
}

svg .box {
    fill: var(--diagram-bg);
    stroke: var(--diagram-border);
    stroke-width: 2;
    transition: all 0.3s;
    rx: 6;
}

svg .text {
    fill: var(--text-main);
    font-family: var(--font-primary);
    font-size: 13px;
    font-weight: 600;
}

svg .subtext {
    fill: var(--text-main);
    font-family: var(--font-primary);
    font-size: 11px;
    font-weight: 400;
    opacity: 0.8;
}

svg .arrow {
    stroke: var(--diagram-arrow);
    stroke-width: 2;
    fill: none;
    marker-end: url(#arrowhead);
}

svg marker path {
    fill: var(--diagram-arrow);
}

svg .dashed-box {
    fill: var(--diagram-lazy-bg);
    stroke: var(--diagram-border);
    stroke-width: 2;
    stroke-dasharray: 5, 5;
    rx: 10;
}

svg .exec-box {
    fill: var(--diagram-exec-bg);
    stroke: var(--diagram-exec-border);
    stroke-width: 2;
    rx: 10;
}

/* === MEMORY BOXES (Chapitre 1) === */
.memory-concept {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.memory-box {
    flex: 1;
    min-width: 280px;
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-color);
}

.stack-box {
    background: linear-gradient(135deg, var(--bg-panel) 0%, rgba(52, 152, 219, 0.1) 100%);
    border-top: 4px solid #3498db;
}

.heap-box {
    background: linear-gradient(135deg, var(--bg-panel) 0%, rgba(230, 126, 34, 0.1) 100%);
    border-top: 4px solid #e67e22;
}

.memory-title {
    margin-top: 0;
    font-family: var(--font-primary);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1rem;
}

/* === NAMING CONVENTIONS BOX === */
.naming-convention {
    background-color: var(--table-row-even);
    border: 1px dashed var(--accent-color);
    padding: 20px;
    border-radius: 8px;
}

/* === WARNING BOX === */
.warning-box {
    background-color: var(--warning-bg);
    border-left: 5px solid var(--warning-border);
    color: var(--warning-text);
    padding: 18px 22px;
    margin: 25px 0;
    border-radius: 0 8px 8px 0;
}

/* === NAVIGATION === */
.nav-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    border: none;
    border-radius: 30px;
    font-family: var(--font-primary);
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
    color: white;
    text-decoration: none;
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* === GESTION LANGUE === */
div[lang] {
    display: none;
}

/* === PRINT STYLES === */
@media print {
    :root {
        --base-font-size: 12pt !important;
    }

    body {
        background: white !important;
        color: black !important;
        padding: 0 !important;
        padding-top: 0 !important;
        max-width: none;
    }

    .reader-toolbar,
    .nav-buttons {
        display: none !important;
    }

    h1,
    h2,
    h3,
    h4,
    p,
    li,
    td,
    th {
        color: #000 !important;
    }

    h1 {
        font-size: 24pt !important;
        border-bottom: 2px solid #000 !important;
    }

    h2 {
        font-size: 18pt !important;
        border-bottom: 1px solid #666 !important;
    }

    pre {
        background-color: #f8f8f8 !important;
        border: 1px solid #ccc !important;
        white-space: pre-wrap !important;
    }

    .console-output {
        background-color: #eee !important;
        color: #000 !important;
        border: 1px solid #999 !important;
    }

    .highlight-active {
        background-color: transparent !important;
        box-shadow: none !important;
    }

    @page {
        size: A4 portrait;
        margin: 1cm;
    }

    @page {
        @bottom-right {
            content: counter(page) " / " counter(pages);
            font-size: 10pt;
            color: #333;
        }
    }

    @page {
        @bottom-left {
            content: "Saïd SASSI";
            font-size: 10pt;
            color: #333;
        }
    }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    body {
        padding: 20px 16px;
        padding-top: 20px;
        /* No toolbar on mobile - FAB instead */
    }

    /* Hide desktop toolbar on mobile */
    .reader-toolbar {
        display: none !important;
    }

    /* Show FAB on mobile */
    .fab-container {
        display: flex;
        bottom: 16px;
        right: 16px;
    }

    .fab-toggle {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    .fab-menu {
        max-width: 280px;
        padding: 14px;
    }

    .divider {
        display: none;
    }

    h1 {
        font-size: 1.8em;
    }

    h2 {
        font-size: 1.4em;
    }

    .memory-concept {
        flex-direction: column;
    }

    .memory-box {
        min-width: 100%;
    }

    /* Card View for Tables */
    table,
    thead,
    tbody,
    th,
    td,
    tr {
        display: block;
    }

    thead {
        display: none;
    }

    tr {
        margin-bottom: 1.5rem;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        background-color: var(--bg-secondary);
        overflow: hidden;
    }

    td {
        display: flex;
        justify-content: flex-start;
        /* Natural LTR flow, no forced justification */
        align-items: flex-start;
        /* Align top for multi-line text */
        text-align: left;
        /* Better readability than right align */
        padding: 12px 15px;
        border-bottom: 1px solid var(--border-color);
        position: relative;
        font-size: 0.95em;
        gap: 15px;
        /* Space between label and content */
    }

    td:last-child {
        border-bottom: none;
    }

    td::before {
        content: attr(data-label) " :";
        /* Added colon */
        font-weight: bold;
        text-transform: uppercase;
        font-size: 0.8em;
        color: var(--accent-color);
        text-align: left;
        /* Fixed width for consistent alignment */
        flex: 0 0 40%;
        max-width: 40%;
    }
}

/* Voice Select */
.voice-select {
    background: var(--bg-secondary);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.85em;
    max-width: 150px;
    margin-left: 10px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s ease;
}

.voice-select:hover {
    border-color: var(--accent-color);
}

@media (max-width: 768px) {
    .voice-select {
        /* On mobile, we might want to hide it from toolbar if it takes too much space, 
           or style it smaller. */
        display: none;
    }
}

/* === VOICE SELECTION MODAL === */
.voice-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.voice-modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.voice-modal {
    background: var(--bg-panel);
    border-radius: 16px;
    padding: 0;
    width: 90%;
    max-width: 320px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    transform: translateY(20px) scale(0.95);
    transition: transform 0.3s ease;
}

.voice-modal-overlay.open .voice-modal {
    transform: translateY(0) scale(1);
}

.voice-modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.voice-modal-header h3 {
    margin: 0;
    font-size: 1.1em;
    color: var(--text-main);
    font-weight: 600;
}

.voice-modal-content {
    padding: 20px;
}

.modal-voice-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 1em;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-main);
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    /* Force dropdown styling */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.modal-voice-select option {
    background: var(--bg-panel);
    color: var(--text-main);
    padding: 10px;
}

/* Dark theme specific styling for select options */
[data-theme="dark"] .modal-voice-select option {
    background: #2d3748;
    color: #e2e8f0;
}

[data-theme="sepia"] .modal-voice-select option {
    background: #f5f0e6;
    color: #5c4a32;
}

.modal-voice-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.voice-modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.voice-modal-btn {
    background: linear-gradient(135deg, var(--accent-color), #2980b9);
    color: white;
    border: none;
    padding: 12px 32px;
    font-size: 1em;
    font-weight: 600;
    border-radius: 25px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.voice-modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

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

/* === DIAGRAM SVG CLASSES === */
.box {
    fill: var(--bg-panel);
    stroke: var(--diagram-border);
    stroke-width: 2px;
    transition: fill var(--transition-speed), stroke var(--transition-speed);
}

.text {
    fill: var(--text-heading);
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 600;
}

.subtext {
    fill: var(--text-main);
    font-family: var(--font-primary);
    font-size: 12px;
}


.arrow {
    stroke: var(--diagram-arrow);
    stroke-width: 2;
    fill: none;
}

/* Dark Mode Specific Overrides for Diagram */
[data-theme="dark"] .box {
    fill: #2d2d2d;
    /* Lighter than body #1e1e1e */
    stroke: var(--accent-color);
    /* Blue border for visibility */
    stroke-width: 2px;
}

[data-theme="dark"] .text,
[data-theme="dark"] .subtext {
    fill: #ffffff;
    /* Pure white text */
    font-weight: 600;
    /* Bolder text */
}
/* === SHARED FOOTER === */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted, #718096);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

.footer a {
    color: var(--gradient-start, #667eea);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}