/* ============================
   GLOBAL THEME VARIABLES
   ============================ */
:root {
    --brand: #0b3b61;
    --brand-light: rgba(11, 59, 97, 0.1);
    --brand-rgb: 11, 59, 97;
    /* NEW: RGB for opacity use */
    --accent: #d4af37;
    --muted: #6c757d;
    --surface: #ffffff;
    --surface-light: #fefefe;
    /* Slightly lighter than surface */
    --surface-dark: #f0f0f0;
    /* Slightly darker than surface */
    --soft: #f8f9fa;
    --text: #111827;
    --border: #e5e7eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --light-bg: #f8f9fa;
    --dark-bg: #0f172a;
    --dark-text: #f1f5f9;
    --dark-surface: #1e293b;
    --dark-border: #334155;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 10px, 10px, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --backdrop-blur: blur(12px);

    /* ==================================== */
    /* NEW: ADMIN SPECIFIC VARIABLES */
    /* ==================================== */
    --admin-color: #00bcd4; /* Cyan de base */
    --admin-bg: rgba(0, 188, 212, 0.1); /* 10% de cyan */
    --admin-border-light: rgba(0, 188, 212, 0.5); 
    --admin-shadow: 0 2px 8px rgba(0, 188, 212, 0.2); 
    --admin-icon-size: 1.1em;
}

/* ============================
   BASE STYLES
   ============================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: var(--soft);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    transition: background var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

button,
.btn {
    transition: all var(--transition-fast);
}

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

/* ============================
   SCROLLBAR STYLING
   ============================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--soft);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--dark-border);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}

/* ============================
   THEMES
   ============================ */
[data-theme="dark"] {
    --brand: #60a5fa;
    --brand-light: rgba(96, 165, 250, 0.1);
    --brand-rgb: 96, 165, 250;
    --accent: #fbbf24;
    --muted: #94a3b8;
    --text: var(--dark-text);
    --surface: var(--dark-surface);
    --surface-light: #2c3748;
    --surface-dark: #1a2330;
    --soft: var(--dark-bg);
    --border: var(--dark-border);
    --success: #34d399;
    --danger: #f87171;
    --warning: #fbbf24;
    --info: #60a5fa;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);

    --admin-color: #38bdf8; /* Cyan plus lumineux */
    --admin-bg: rgba(56, 189, 248, 0.1);
    --admin-border-light: rgba(56, 189, 248, 0.5);
    --admin-shadow: 0 2px 8px rgba(56, 189, 248, 0.2);
}

[data-theme="modern"] {
    --brand: #2563eb;
    --brand-rgb: 37, 99, 235;
    --accent: #f59e0b;
    --muted: #6b7280;
    --text: #111827;
    --surface: #ffffff;
    --surface-light: #fefefe;
    --surface-dark: #f0f0f0;
    --soft: #f3f4f6;
    --border: #e5e7eb;
    --success: #10b981;
    --danger: #ef4444;

    --admin-color: #10b981; /* Utiliser le vert pour un look plus "pro" */
    --admin-bg: rgba(16, 185, 129, 0.1);
    --admin-border-light: rgba(16, 185, 129, 0.5);
    --admin-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

[data-theme="pastel"] {
    --brand: #8b5cf6;
    --brand-rgb: 139, 92, 246;
    --accent: #ec4899;
    --muted: #6b7280;
    --text: #1f2937;
    --surface: #fef3c7;
    --surface-light: #fffbea;
    --surface-dark: #faeac3;
    --soft: #fce7f3;
    --border: #f8d4e0;
    --success: #10b981;
    --danger: #ef4444;

    --admin-color: #3b82f6; /* Bleu distinctif sur fond jaune */
    --admin-bg: rgba(59, 130, 246, 0.1);
    --admin-border-light: rgba(59, 130, 246, 0.5);
    --admin-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

[data-theme="elegant"] {
    --brand: #c6a664;
    --brand-rgb: 198, 166, 100;
    --accent: #ffebcd;
    --muted: #a1a1aa;
    --text: #f9fafb;
    --surface: #1f1f1f;
    --surface-light: #2a2a2a;
    --surface-dark: #1a1a1a;
    --soft: #111111;
    --border: #2e2e2e;
    --success: #4ade80;
    --danger: #f87171;
    --warning: #fbbf24;
    --info: #60a5fa;
    --shadow-sm: 0 1px 3px rgba(198, 166, 100, 0.25);
    --shadow: 0 4px 6px rgba(198, 166, 100, 0.25);
    --shadow-md: 0 10px 15px rgba(198, 166, 100, 0.2);
    --shadow-lg: 0 20px 25px rgba(198, 166, 100, 0.15);
}

[data-theme="forest"] {
    --brand: #2e7d32;
    --brand-rgb: 46, 125, 50;
    --accent: #a5d6a7;
    --muted: #6b7280;
    --text: #1f2937;
    --surface: #f1f8f4;
    --surface-light: #f5fcf8;
    --surface-dark: #e6f1e8;
    --soft: #e8f5e9;
    --border: #c8e6c9;
    --success: #16a34a;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --shadow-sm: 0 1px 3px rgba(46, 125, 50, 0.15);
    --shadow: 0 4px 6px rgba(46, 125, 50, 0.15);
    --shadow-md: 0 10px 15px rgba(46, 125, 50, 0.15);
    --shadow-lg: 0 20px 25px rgba(46, 125, 50, 0.15);
}

[data-theme="ocean"] {
    --brand: #0284c7;
    --brand-rgb: 2, 132, 199;
    --accent: #38bdf8;
    --muted: #64748b;
    --text: #0f172a;
    --surface: #f0f9ff;
    --surface-light: #f5fcff;
    --surface-dark: #e1f3ff;
    --soft: #e0f2fe;
    --border: #bae6fd;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #0284c7;
    --shadow-sm: 0 1px 3px rgba(2, 132, 199, 0.15);
    --shadow: 0 4px 6px rgba(2, 132, 199, 0.15);
    --shadow-md: 0 10px 15px rgba(2, 132, 199, 0.15);
    --shadow-lg: 0 20px 25px rgba(2, 132, 199, 0.15);
}

[data-theme="midnight"] {
    --brand: #38bdf8;
    --brand-rgb: 56, 189, 248;
    --accent: #a855f7;
    --muted: #94a3b8;
    --text: #f1f5f9;
    --surface: #0f172a;
    --surface-light: #1e293b;
    --surface-dark: #090f19;
    --soft: #1e293b;
    --border: #334155;
    --success: #22c55e;
    --danger: #f87171;
    --warning: #facc15;
    --info: #3b82f6;
    --shadow-sm: 0 1px 3px rgba(56, 189, 248, 0.3);
    --shadow: 0 4px 6px rgba(56, 189, 248, 0.25);
    --shadow-md: 0 10px 15px rgba(168, 85, 247, 0.2);
    --shadow-lg: 0 20px 25px rgba(168, 85, 247, 0.15);
}

@media (prefers-color-scheme: dark) {
    [data-theme="system"] {
        --brand: #60a5fa;
        --brand-rgb: 96, 165, 250;
        --accent: #fbbf24;
        --muted: #94a3b8;
        --text: var(--dark-text);
        --surface: var(--dark-surface);
        --surface-light: #2c3748;
        --surface-dark: #1a2330;
        --soft: var(--dark-bg);
        --border: var(--dark-border);
        --success: #34d399;
        --danger: #f87171;

        --admin-color: #38bdf8;
        --admin-bg: rgba(56, 189, 248, 0.1);
        --admin-border-light: rgba(56, 189, 248, 0.5);
        --admin-shadow: 0 2px 8px rgba(56, 189, 248, 0.2);
    }
}

/* 1. Base style for background application on BODY */
body[data-dynamic-bg-active] {
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    transition: background-image var(--transition-base);
}

/* ============================
   BACKGROUND IMAGE OVERRIDES (NEW SECTION - Affecting Main Content Only)
   ============================ */

/* 1. Base style for background application on MAIN CONTENT */
.main-content[data-bg] {
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: scroll; 
    transition: background-image var(--transition-base), background-color var(--transition-base);
    background-color: transparent !important; /* Révèle l'image du body */
}

/* 3. Navbar and Sidebar Glassmorphism */
body[data-dynamic-bg-active] .navbar {
    /* Utilise un dégradé très subtil basé sur les couleurs dynamiques */
    background: linear-gradient(90deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.85; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    /* Utilise l'opacité du RGB dynamique pour les bordures */
    border-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5); 
    box-shadow: var(--shadow-md);
}

body[data-dynamic-bg-active] .sidebar {
    /* Utilise un dégradé vertical très subtil */
    background: linear-gradient(180deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.9; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    border-right-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5);
    box-shadow: var(--shadow-md);
}


/* Assurer que le body ne montre pas son soft-background par défaut quand l'image est active */
body[data-dynamic-bg-active] {
    background-color: transparent !important;
}

/* Ensure the main content retains soft background if no image is selected or data-bg is removed */
.main-content {
    background: var(--soft);
}

/* 2. Overrides for glassmorphism effect: NOT APPLIED to Navbar/Sidebar */
/* Cards and other elements inside main-content remain styled by default */


/* 3. The specific background classes (Applied to body and main content) */
.bg-image-1 {
    background-image: url('https://picsum.photos/id/1054/1920/1080'); /* Blue geometry */
}
.bg-image-2 {
    background-image: url('https://picsum.photos/id/1043/1920/1080'); /* Soft sunset gradient */
}
.bg-image-3 {
    background-image: url('https://picsum.photos/id/350/1920/1080'); /* Dark starry nebula */
}
.bg-image-4 {
    background-image: url('https://picsum.photos/id/400/1920/1080'); /* Minimalist wood table */
}

/* NOUVEAUX STYLES D'IMAGE */
.bg-image-5 {
    background-image: url('https://t3.ftcdn.net/jpg/05/36/78/84/240_F_536788448_UcOZv30qCQY36To1ygsjmFmVUaeuc7kf.jpg'); /* Ville Cyberpunk Néon */
}
.bg-image-6 {
    background-image: url('https://img1.wallspic.com/crops/0/5/8/7/6/167850/167850-boardwalk-cloud-water-street_light-purple-3840x2160.png'); /* Paysage Manga Nuageux */
}
.bg-image-7 {
    background-image: url('https://img1.wallspic.com/crops/3/2/0/0/8/180023/180023-vegeta_dragon_ball-vegeta-goku-dragon_ball-dragon-3840x2160.jpg'); /* Dragon Fantasy (Sombre/Rouge) */
}
.bg-image-8 {
    background-image: url('https://img1.wallspic.com/crops/9/8/2/0/5/150289/150289-man_riding_bicycle_under_blue_sky-3840x2160.jpg'); /* Planète Sci-Fi (Bleu/Violet) */
}

.bg-image-9 {
   background-image: url('https://img1.wallspic.com/previews/8/8/5/8/7/178588/178588-itachi_faithful_night-itachi_uchiha-visual_arts-graphic_design-art-x750.jpg');
}

.bg-image-10 {
   background-image: url('https://img2.wallspic.com/previews/9/8/7/2/7/172789/172789-anime-sleeve-cartoon-animation-shonen_manga-x750.jpg');
}
.bg-image-11 {
   background-image: url('https://img1.wallspic.com/previews/6/5/6/6/7/176656/176656-attack_on_titan-eren_yeager-mikasa_ackerman-attack_on_titan_2-armin_arlert-x750.jpg');
}
.bg-image-12 {
   background-image: url('https://img1.wallspic.com/previews/9/6/8/6/4/146869/146869-silhouette_of_man_and_woman_standing_on_brown_sand_during_sunset-x750.jpg');
}

.bg-image-13{
    background-image: url('https://img1.wallspic.com/previews/3/5/5/6/2/126553/126553-sunset-rock-sea-creative_arts-formation-x750.jpg');
}

.bg-image-14{
    background-image: url('https://images.unsplash.com/photo-1446776811953-b23d57bd21aa?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-15{
    background-image: url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-16{
    background-image: url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-17{
    background-image: url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-18{
    background-image: url('https://images.unsplash.com/photo-1499346030926-9a72daac6c63?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-19{
    background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-20{
    background-image: url('https://img2.wallspic.com/crops/0/5/3/9/7/179350/179350-art-la_purete_de_la_couleur-purple-azure-violette-2560x1440.jpg');
}

.bg-image-21{
    background-image: url('https://images.unsplash.com/photo-1503264116251-35a269479413?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-22{
    background-image: url('https://images.unsplash.com/photo-1469474968028-56623f02e42e?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-23{
    background-image: url('https://images.unsplash.com/photo-1482192505345-5655af888cc4?auto=format&fit=crop&w=1920&q=80');
}

.bg-image-24{
    background-image: url('https://img2.wallspic.com/previews/7/7/7/8/7/178777/178777-amoled-atmosphere-lecoregion-nature-afterglow-x750.jpg');
}


.bg-image-25{
    background-image: url('https://images.unsplash.com/photo-1504639725590-34d0984388bd?auto=format&fit=crop&w=1920&q=80');
}
.bg-image-26{
    background-image: url( 'https://images.unsplash.com/photo-1493246507139-91e8fad9978e?auto=format&fit=crop&w=1920&q=80');
}

.bg-image-27{
    background-image: url('https://img1.wallspic.com/previews/3/5/8/0/40853/40853-matin-jaune-printemps-lac-ciel-x750.jpg');
}
.bg-image-28{
    background-image: url('https://4kwallpapers.com/images/walls/thumbs_3t/10148.jpg');
}



/* 4. Selector UI (No changes needed here from previous step) */
.bg-thumb {
    width: 100%;
    height: 60px;
    border-radius: var(--radius-sm);
    background-size: cover;
    background-position: center;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all var(--transition-fast);
}

.bg-thumb:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.bg-thumb.active {
    border-color: var(--brand);
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

/* ==================================== */
/* 5. DYNAMIC COLOR OVERRIDE LOGIC (FINAL & CORRECTED) */
/* ==================================== */

#mainContent[data-bg] a,
#mainContent[data-bg] .text-gradient,
body[data-dynamic-bg-active] .dropdown-item:hover a {
    color: var(--dynamic-brand, var(--brand)) !important;
}

/* Boutons primaires (Couleur dynamique + Texte blanc) */
#mainContent[data-bg] .btn-primary {
    background: linear-gradient(135deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, #0d5a8f)) !important;
    border: none !important;
    color: var(--dark-text) !important;
}

/* Boutons Outlines */
#mainContent[data-bg] .btn-outline-primary {
    border-color: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dynamic-brand, var(--brand)) !important;
}
#mainContent[data-bg] .btn-outline-primary:hover {
    background: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dark-text) !important;
}

/* Titres dans la nav bar */
body[data-dynamic-bg-active] .navbar-brand > div > div:first-child {
    color: var(--dynamic-brand, var(--brand)) !important;
}

#mainContent[data-bg] .progress-bar {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
}

#mainContent[data-bg] .card-modern:hover::before {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
    opacity: 1;
}

/* --- Priorité 2: Surfaces et Lisibilité Générale (Cartes et Texte) --- */

/* Cartes: Utilisation de la couleur de surface dynamique avec Glassmorphism */
#mainContent[data-bg] .card-modern, #mainContent[data-bg] .card-body {
    /* Retrait du !important ici pour permettre aux classes ADMIN de surcharger */
    background: var(--dynamic-surface-color, rgba(255, 255, 255, 0.85)) !important;
    backdrop-filter: var(--backdrop-blur) saturate(120%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(120%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); 
    /* Utilise l'opacité du RGB dynamique pour la bordure */
    border: 1px solid rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.2); 
    /* NOUVEAU: Définit la couleur du texte à la racine du contenu de la carte */
    color: var(--dynamic-text-color, var(--text)) !important;
}


/* Cible les paragraphes de l'auteur (qui ont la classe text-muted) */
#mainContent[data-bg] .card-body > .d-flex > .text-muted, 
#mainContent[data-bg] .card-body > .d-flex > .text-muted * {
    color: var(--dynamic-text-color, var(--muted)) !important;
    border-color: var(--dynamic-text-color, var(--border)) !important;
    opacity: 0.8;
}


/* Texte par défaut et titres des cartes (couleur dynamique inversée pour le contraste) */
#mainContent[data-bg] .card-modern p,
#mainContent[data-bg] .card-modern h5,
#mainContent[data-bg] .card-modern h6,
#mainContent[data-bg] .card-modern div:not(.video-thumb),
#mainContent[data-bg] .ql-editor {
    /* Utilise inherit pour que ces éléments prennent la couleur définie sur le .card-modern (qui est dynamic-text-color) */
    color: inherit !important; 
}
/* Surcharge des titres H2/H3 dans le contenu Quill pour garantir qu'ils utilisent la couleur de texte dynamique */
#mainContent[data-bg] .ql-editor h2,
#mainContent[data-bg] .ql-editor h3 {
    color: var(--dynamic-text-color, var(--text)) !important;
}

/* Titres H2 et H3 dans la vue (Tableau de bord, etc.) - EFFET AVANCÉ CONSERVÉ */
#mainContent[data-bg] > .view-content h2,
#mainContent[data-bg] > .view-content h3 {
    color: var(--dynamic-brand, var(--brand)) !important;
    
    /* Conserve l'effet Text Stroke/Shadow pour la lisibilité sur l'image de fond */
    text-shadow: 
        -1px -1px 0 var(--dynamic-shadow-color, black),
         1px -1px 0 var(--dynamic-shadow-color, black),
        -1px  1px 0 var(--dynamic-shadow-color, black),
         1px  1px 0 var(--dynamic-shadow-color, black),
         0 4px 10px rgba(0, 0, 0, 0.6); 
    -webkit-text-stroke: 1px var(--dynamic-shadow-color, black);
    -webkit-font-smoothing: antialiased;

    background: none !important;
    backdrop-filter: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
    transition: all var(--transition-base);
}

/* Petits textes/muted (pour le contraste) */
#mainContent[data-bg] .text-muted,
#mainContent[data-bg] .small {
    color: var(--dynamic-text-color, var(--muted)) !important;
    opacity: 0.8;
}

/* Calendrier: Assurer un bon contraste pour le FullCalendar */
#mainContent[data-bg] .fc-toolbar-title,
#mainContent[data-bg] .fc-col-header-cell {
    color: var(--dynamic-text-color, var(--text));
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
    background: var(--surface);
    background: rgba(var(--brand-rgb), 0.05);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
    position: sticky;
    top: 0;
    z-index: 1030;
}

[data-theme="dark"] .navbar {
    background: rgba(var(--brand-rgb), 0.1);
}

/* NOUVEAU/MODIFIÉ: Style Dynamique pour la Navbar */
body[data-dynamic-bg-active] .navbar {
    /* Utilise un dégradé très subtil basé sur les couleurs dynamiques */
    background: linear-gradient(90deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.85; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    /* Utilise l'opacité du RGB dynamique pour les bordures */
    border-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5); 
    box-shadow: var(--shadow-md);
}

/* Texte de la Navbar */
body[data-dynamic-bg-active] .navbar * {
    color: var(--dark-text) !important; /* Force le texte en clair/blanc sur le dégradé coloré */
}
body[data-dynamic-bg-active] .navbar-brand > div > div:first-child {
    color: var(--dark-text) !important; /* Le titre UMP reste blanc */
}
body[data-dynamic-bg-active] .navbar .btn-link {
    color: var(--dark-text) !important;
}
body[data-dynamic-bg-active] .navbar .btn-link:hover {
    background: rgba(255, 255, 255, 0.2); /* Hover subtil sur le dégradé */
}


.navbar-brand {
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: translateY(-1px);
}

.navbar-brand img {
    height: 44px;
    transition: transform var(--transition-base);
}

.navbar-brand:hover img {
    transform: scale(1.02);
}

.navbar .btn-link {
    color: var(--muted);
    position: relative;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.navbar .btn-link:hover {
    color: var(--brand);
    background: var(--brand-light);
    transform: translateY(-1px);
}

/* ============================
   SEARCH BOX
   ============================ */
.search-box {
    position: relative;
    max-width: 500px;
    width: 100%;
}

.search-box input {
    padding: 0.625rem 1rem 0.625rem 3rem;
    border-radius: 24px;
    border: 2px solid var(--border);
    background: var(--soft);
    color: var(--text);
    transition: all var(--transition-base);
    width: 100%;
    font-size: 0.9375rem;
}

.search-box input:focus {
    border-color: var(--brand);
    background: var(--surface);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.15);
    transform: translateY(-1px);
}

.search-box input::placeholder {
    color: var(--muted);
    opacity: 0.7;
}

.search-box i {
    position: absolute;
    left: 1.125rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    font-size: 1.125rem;
    transition: color var(--transition-fast);
    pointer-events: none;
}

.search-box input:focus~i {
    color: var(--brand);
}

/* ============================
   SIDEBAR
   ============================ */
.sidebar {
    position: fixed;
    top: 72px;
    left: 0;
    width: 280px;
    height: calc(100vh - 72px);
    background: var(--surface);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform var(--transition-base), background var(--transition-base);
    z-index: 1020;
    box-shadow: var(--shadow);
}

/* NOUVEAU/MODIFIÉ: Style Dynamique pour la Sidebar */
body[data-dynamic-bg-active] .sidebar {
    /* Utilise un dégradé vertical très subtil */
    background: linear-gradient(180deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.9; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    border-right-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5);
    box-shadow: var(--shadow-md);
}

/* Texte de la Sidebar */
body[data-dynamic-bg-active] .sidebar-item {
    color: var(--dark-text) !important; 
}
body[data-dynamic-bg-active] .sidebar-item:hover,
body[data-dynamic-bg-active] .sidebar-item.active {
    background: rgba(255, 255, 255, 0.2) !important; 
    color: var(--dark-text) !important;
}

/* Ligne active utilise la couleur d'accentuation (moins de confusion avec le fond) */
body[data-dynamic-bg-active] .sidebar-item::before {
     background: var(--dynamic-accent, var(--accent)) !important;
}


.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar.collapsed {
    transform: translateX(-280px);
}

.sidebar-item {
    padding: 0.875rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.875rem;
    color: var(--text);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
    position: relative;
    font-weight: 500;
    font-size: 0.9375rem;
}

.sidebar-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform var(--transition-base);
    transform-origin: center;
}

.sidebar-item:hover {
    background: linear-gradient(90deg, var(--brand-light) 0%, transparent 100%);
    color: var(--brand);
    padding-left: 1.625rem;
}

.sidebar-item.active {
    background: linear-gradient(90deg, var(--brand-light) 0%, transparent 100%);
    color: var(--brand);
    font-weight: 600;
}

.sidebar-item.active::before {
    transform: scaleY(1);
}

.sidebar-item i {
    font-size: 1.25rem;
    width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.sidebar-item:hover i {
    transform: scale(1.05);
}

/* ============================
   MAIN CONTENT
   ============================ */
.main-content {
    margin-left: 280px;
    min-height: calc(100vh - 72px);
    padding: 2rem;
    transition: margin-left var(--transition-base);
    background: var(--soft);
}

.main-content.expanded {
    margin-left: 0;
}

/* ============================
   CARDS
   ============================ */
.card-modern {
    border: 0;
    background: var(--surface);
    box-shadow: var(--shadow);
    border-radius: var(--radius-md);
    overflow: hidden;
    color: var(--text);
    transition: all var(--transition-base);
    position: relative;
}

.card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-modern:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

/* ============================
   COURSE CARDS
   ============================ */
.course-card {
    position: relative;
    overflow: hidden;
}

.course-thumbnail {
    height: 200px;
    width: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, var(--brand-light), rgba(212, 175, 55, 0.1));
    transition: all var(--transition-slow);
}

.course-card:hover .course-thumbnail {
    transform: scale(1.03);
}

.course-badge {
    position: absolute;
    top: 0.875rem;
    right: 0.875rem;
    background: var(--surface-light);
    backdrop-filter: var(--backdrop-blur);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--brand);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
    z-index: 10;
}

.course-card:hover .course-badge {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.progress-ring {
    position: absolute;
    top: 0.875rem;
    left: 0.875rem;
    width: 52px;
    height: 52px;
    background: var(--surface-light);
    backdrop-filter: var(--backdrop-blur);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text); /* FIX: Texte noir pour contraster avec le fond clair du ring */
    font-size: 0.75rem;
    box-shadow: var(--shadow);
    border: 3px solid var(--success);
    transition: all var(--transition-fast);
    z-index: 10;
}

.course-card:hover .progress-ring {
    transform: scale(1.05);
}

/* ============================
   STAT CARDS
   ============================ */
.stat-card {
    background: linear-gradient(135deg, var(--brand) 0%, #0d5a8f 100%);
    color: var(--dark-text);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -25%;
    width: 240px;
    height: 240px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    transition: transform var(--transition-slow);
}

.stat-card:hover::before {
    transform: scale(1.1) translate(-5px, 5px);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0.5rem 0;
    position: relative;
    z-index: 1;
}

.stat-card small {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    opacity: 0.95;
}

.stat-card i {
    font-size: 3.5rem;
    opacity: 0.2;
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    transition: all var(--transition-base);
}

.stat-card:hover i {
    opacity: 0.25;
    transform: translateY(-50%) rotate(5deg) scale(1.03);
}

/* ============================
   TIMELINE
   ============================ */
.timeline-item {
    position: relative;
    padding-left: 3rem;
    padding-bottom: 2rem;
    transition: opacity var(--transition-fast);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0.6875rem;
    top: 2rem;
    bottom: 0;
    background: linear-gradient(180deg, var(--accent) 0%, transparent 100%);
    width: 2px;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0.25rem;
    width: 28px;
    height: 28px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-text);
    font-size: 0.875rem;
    box-shadow: 0 0 0 4px var(--surface), var(--shadow);
    transition: all var(--transition-base);
    z-index: 10;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.08);
    box-shadow: 0 0 0 6px var(--surface), var(--shadow-md);
}

/* ============================
   VIDEO CARDS
   ============================ */
.video-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    color: var(--text); /* Assure le texte de base */
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
}

.video-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-card:hover::after {
    transform: scaleX(1);
}

.video-thumb {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.video-thumb-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-base);
    display: block;
}

.video-card:hover .video-thumb-img {
    transform: scale(1.04);
    filter: brightness(0.9);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(var(--brand-rgb), 0.5) 0%, rgba(0, 0, 0, 0.6) 100%);
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-base);
}

.video-card:hover .video-overlay {
    opacity: 1;
}

.play-icon {
    color: var(--dark-text);
    font-size: 3.5rem;
    transition: transform var(--transition-base);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.video-card:hover .play-icon {
    transform: scale(1.1);
}

.video-badge {
    position: absolute;
    top: 0.875rem;
    left: 0.875rem;
    background: var(--brand);
    color: var(--dark-text);
    font-size: 0.6875rem;
    padding: 0.375rem 0.75rem;
    border-radius: 14px;
    font-weight: 600;
    box-shadow: var(--shadow);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-fast);
    z-index: 10;
}

.video-card:hover .video-badge {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.video-body {
    padding: 1rem 1.125rem;
}

.video-title {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    color: var(--text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-author {
    color: var(--muted);
    font-size: 0.8125rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ============================
   TABS
   ============================ */
.nav-tabs-modern {
    border: 0;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.nav-tabs-modern .nav-link {
    border: 0;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.5rem;
    color: var(--text);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-tabs-modern .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-tabs-modern .nav-link:hover {
    background: var(--brand-light);
    color: var(--brand);
}

.nav-tabs-modern .nav-link.active {
    background: var(--brand);
    color: var(--dark-text);
}

.nav-tabs-modern .nav-link.active::before {
    transform: scaleX(1);
}

/* ============================
   NOTIFICATIONS
   ============================ */
.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: var(--dark-text);
    border-radius: 50%;
    width: 22px;
    height: 22px;
    font-size: 0.6875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: var(--shadow);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* ============================
   DROPDOWN MENU
   ============================ */
.dropdown-menu {
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    animation: dropdownFade var(--transition-base) ease;
    border: 1px solid var(--border);
    padding: 0.5rem;
    min-width: 200px;
}

body[data-dynamic-bg-active] .dropdown-menu {
    /* Utilise la couleur de surface dynamique avec Glassmorphism */
    background: var(--dynamic-surface-color, rgba(255, 255, 255, 0.85));
    backdrop-filter: var(--backdrop-blur) saturate(120%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(120%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.2); 
    color: var(--dynamic-text-color, var(--text)); 
}


.dropdown-menu .dropdown-item {
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    padding: 0.625rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
}

.dropdown-menu .dropdown-item:hover {
    background: var(--brand-light);
    color: var(--brand);
    transform: translateX(2px);
}

.dropdown-menu .dropdown-item:active {
    background: rgba(var(--brand-rgb), 0.12);
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

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

/* ============================
   BUTTONS
   ============================ */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand) 0%, #0d5a8f 100%);
    border: none;
    box-shadow: var(--shadow);
    color: var(--dark-text);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-outline-primary {
    border: 2px solid var(--brand);
    color: var(--brand);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--brand);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline-secondary {
    border: 2px solid var(--muted);
    color: var(--muted);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--muted);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline-success {
    border: 2px solid var(--success);
    color: var(--success);
    background: transparent;
}

.btn-outline-success:hover {
    background: var(--success);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* ============================
   PROGRESS BARS
   ============================ */
.progress {
    border-radius: 10px;
    overflow: hidden;
    background: var(--border);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    transition: width var(--transition-slow);
    background: linear-gradient(90deg, var(--brand), var(--accent));
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* ============================
   MODALS - ENLARGED
   ============================ */
.modal-dialog {
    max-width: 900px;
    margin: 1.75rem auto;
}

.modal-dialog-centered {
    min-height: calc(100% - 3.5rem);
}

.video-modal .modal-dialog {
    max-width: 1200px;
    height: 95%;
}

.video-modal .modal-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.video-modal .modal-body {
    flex-grow: 1;
    overflow: hidden;
}

.video-modal .video-container iframe {
    height: 100%;
    width: 100%;
}

.document-modal .modal-dialog {
    max-width: 1100px;
}

.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    background: var(--surface);
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, var(--brand-light), transparent);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border-top: 1px solid var(--border);
    background: var(--surface-light);
}

.modal-backdrop {
    backdrop-filter: blur(4px);
    background: rgba(var(--brand-rgb), 0.3);
}

[data-theme="dark"] .modal-backdrop {
    background: rgba(0, 0, 0, 0.7);
}

.btn-close {
    /* UTILISATION DE SVG NOIR STATIQUE + FILTRES POUR LE MODE SOMBRE */
    background: transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e") center/1em auto no-repeat;
    width: 1.5rem;
    height: 1.5rem;
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.btn-close:hover {
    opacity: 1;
    transform: rotate(90deg);
}
/* Appliquer les filtres pour les thèmes sombres/dynamiques */
[data-theme="dark"] .btn-close,
[data-theme="elegant"] .btn-close,
[data-theme="midnight"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

body[data-dynamic-bg-active][data-dynamic-text="light"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}
body[data-dynamic-bg-active][data-dynamic-text="dark"] .btn-close {
    filter: none;
}


/* ============================
   FORM CONTROLS
   ============================ */
.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    transition: all var(--transition-fast);
    background: var(--soft);
    color: var(--text);
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--brand);
    background: var(--surface);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.15);
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--muted);
    opacity: 0.65;
}

/* ============================
   LOADER
   ============================ */
.loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================
   FADE IN ANIMATION
   ============================ */
.fade-in {
    animation: fadeIn 0.5s ease-in-out both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

/* Staggered animation for grids */
.fade-in:nth-child(1) {
    animation-delay: 0.05s;
}

.fade-in:nth-child(2) {
    animation-delay: 0.1s;
}

.fade-in:nth-child(3) {
    animation-delay: 0.15s;
}

.fade-in:nth-child(4) {
    animation-delay: 0.2s;
}

.fade-in:nth-child(5) {
    animation-delay: 0.25s;
}

.fade-in:nth-child(6) {
    animation-delay: 0.3s;
}

.fade-in:nth-child(7) {
    animation-delay: 0.35s;
}

.fade-in:nth-child(8) {
    animation-delay: 0.4s;
}

.fade-in:nth-child(9) {
    animation-delay: 0.45s;
}

.fade-in:nth-child(10) {
    animation-delay: 0.5s;
}

/* ============================
   WELCOME MESSAGE
   ============================ */
#welcomeMessage {
    color: var(--brand);
    font-size: 0.9375rem;
    white-space: nowrap;
    font-weight: 500;
    transition: color var(--transition-fast);
}

[data-theme="dark"] #welcomeMessage {
    color: var(--accent);
}

/* ============================
   BREADCRUMB
   ============================ */
#breadcrumb {
    font-size: 0.875rem;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.breadcrumb-link,
.breadcrumb-current {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-sm);
    background-color: var(--surface);
    border: 1px solid var(--border);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.breadcrumb-link {
    color: var(--brand);
    text-decoration: none;
}

.breadcrumb-link:hover {
    background-color: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.breadcrumb-current {
    color: var(--text);
    background-color: var(--soft);
}

/* ============================
   ALERTS & TOASTS
   ============================ */
.alert {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow);
    animation: slideInRight 0.3s ease-out;
    padding: 1rem 1.25rem;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

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

.alert-success {
    background: linear-gradient(135deg, var(--success) 0%, #0d9488 100%);
    color: #fff;
}

.alert-info {
    background: linear-gradient(135deg, var(--info) 0%, #2563eb 100%);
    color: #fff;
}

.alert-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #f59e0b 100%);
    color: #fff;
}

.alert-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: #fff;
}

/* ============================
   PROFILE DROPDOWN
   ============================ */
#profileDropdown img {
    transition: all var(--transition-fast);
    box-shadow: var(--shadow);
}

#profileDropdown:hover img {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

.dropdown-toggle::after {
    transition: transform var(--transition-fast);
}

.dropdown-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

/* ============================
   VIDEO/DOCUMENT CONTAINERS
   ============================ */
.video-container,
.document-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: var(--surface-dark);
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 500px;
}

.video-container iframe,
.document-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ============================
   CALENDAR EVENTS
   ============================ */
#calendarEvents .d-flex {
    padding: 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

#calendarEvents .d-flex:hover {
    background: var(--brand-light);
    transform: translateX(4px);
}

#calendarEvents .bg-primary,
#calendarEvents .bg-warning {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
}

#calendarEvents .d-flex:hover .bg-primary,
#calendarEvents .d-flex:hover .bg-warning {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

/* ============================
   NOTES CARDS
   ============================ */
#notesList .card-modern {
    border-left: 4px solid var(--accent);
}

#notesList .card-modern:hover {
    border-left-color: var(--brand);
}

/* ============================
   CHART CONTAINER
   ============================ */
#progressChart {
    border-radius: var(--radius-md);
    padding: 1rem;
}

/* ============================
   THEME SELECT
   ============================ */
#themeSelect {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23${(getComputedStyle(document.body).getPropertyValue('--text') == '#f1f5f9' ? 'aaa' : '666')}' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
}

/* ============================
   AUTH MODAL ENHANCEMENTS
   ============================ */
#modalAuth .modal-dialog {
    max-width: 550px;
}

#modalAuth .modal-header {
    background: linear-gradient(135deg, var(--brand-light), transparent);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
}

#modalAuth .nav-tabs-modern {
    border-bottom: none;
    margin-bottom: 0;
}

#modalAuth .tab-content {
    padding-top: 1rem;
}

#modalAuth input[type="email"],
#modalAuth input[type="password"],
#modalAuth input[type="text"] {
    font-size: 0.9375rem;
    padding: 0.875rem 1.125rem;
    border-radius: var(--radius-sm);
}

#modalAuth .btn {
    font-size: 0.9375rem;
    padding: 0.875rem;
    font-weight: 600;
}

.btn-outline-dark {
    border: 2px solid var(--border);
    color: var(--text);
    background: var(--surface-light);
}

.btn-outline-dark:hover {
    background: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
}

/* ============================
   EMPTY STATE
   ============================ */
.text-center.text-muted {
    padding: 3rem 1rem;
    color: var(--brand);
}

.text-center.text-muted i {
    opacity: 0.5;
    transition: all var(--transition-base);
}

.card-modern:hover .text-center.text-muted i {
    opacity: 0.65;
    transform: scale(1.03);
}

/* ============================
   BADGES & LABELS
   ============================ */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.3px;
}

/* ============================
   RESPONSIVE ADJUSTMENTS
   ============================ */
@media (max-width: 1399px) {
    .main-content {
        padding: 1.5rem;
    }

    .modal-dialog {
        max-width: 800px;
    }

    .video-modal .modal-dialog {
        max-width: 1000px;
    }
}

@media (max-width: 1199px) {
    .stat-card h3 {
        font-size: 2rem;
    }

    .stat-card i {
        font-size: 3rem;
    }

    .modal-dialog {
        max-width: 700px;
    }
}

@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-280px);
        box-shadow: none;
    }

    .sidebar.show {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }

    .main-content {
        margin-left: 0;
        padding: 1.5rem;
    }

    .search-box {
        max-width: 100%;
    }

    .navbar-brand div {
        font-size: 0.8125rem;
    }

    .stat-card {
        padding: 1.5rem;
    }

    .stat-card h3 {
        font-size: 1.75rem;
    }

    .video-thumb-img {
        height: 180px;
    }

    .modal-dialog {
        max-width: 90%;
        margin: 1rem auto;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-header {
        padding: 1.25rem 1.5rem;
    }
}

@media (max-width: 767px) {
    .main-content {
        padding: 1rem;
    }

    .navbar-brand img {
        height: 36px;
    }

    .course-thumbnail {
        height: 160px;
    }

    .stat-card {
        padding: 1.25rem;
    }

    .stat-card h3 {
        font-size: 1.5rem;
    }

    .stat-card i {
        font-size: 2.5rem;
        right: 1rem;
    }

    .card-modern {
        border-radius: var(--radius-sm);
    }

    .video-thumb-img {
        height: 160px;
    }

    .timeline-item {
        padding-left: 2.5rem;
    }

    .dropdown-menu {
        min-width: 280px;
    }

    #modalAuth .modal-body {
        padding: 1.5rem 1rem;
    }

    .modal-dialog {
        max-width: 95%;
        margin: 0.5rem auto;
    }

    .modal-title {
        font-size: 1.25rem;
    }

    .video-container,
    .document-container {
        min-height: 350px;
    }

    /* FIX: Ensure calendar events remain readable on small screens */
    .fc-event {
        font-size: 0.75rem !important;
        padding: 1px 4px !important;
    }

    .fc-event-title-wrap {
        /* Prevent title text from wrapping too much in day/week view */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
    }
}

@media (max-width: 575px) {
    h2 {
        font-size: 1.5rem;
    }

    .stat-card h3 {
        font-size: 1.25rem;
    }

    .stat-card::before {
        width: 180px;
        height: 180px;
    }

    .play-icon {
        font-size: 2.5rem;
    }

    .course-thumbnail {
        height: 140px;
    }

    .video-thumb-img {
        height: 140px;
    }

    .navbar {
        padding: 0.5rem 0.75rem;
    }

    .search-box input {
        font-size: 0.875rem;
        padding: 0.5rem 0.875rem 0.5rem 2.5rem;
    }

    .search-box i {
        left: 0.875rem;
        font-size: 1rem;
    }

    .video-container,
    .document-container {
        min-height: 280px;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    /* FIX: Reduce padding on notification items in dropdown on mobile */
    .notification-item {
        padding: 0.6rem 0.5rem;
    }
}

/* ============================
   PRINT STYLES
   ============================ */
@media print {

    .navbar,
    .sidebar,
    .btn,
    .dropdown {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    .card-modern {
        box-shadow: none !important;
        page-break-inside: avoid;
    }
}

/* ============================
   ACCESSIBILITY IMPROVEMENTS
   ============================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card-modern {
        border: 2px solid var(--border);
    }

    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================
   UTILITY CLASSES
   ============================ */
.text-gradient {
    background: linear-gradient(135deg, var(--brand), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass-effect {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hover-lift {
    transition: transform var(--transition-fast);
}

.hover-lift:hover {
    transform: translateY(-2px);
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.box-glow {
    box-shadow: 0 0 20px rgba(11, 59, 97, 0.3);
}

[data-theme="dark"] .box-glow {
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.3);
}

/* ============================
   SKELETON LOADING
   ============================ */
.skeleton {
    background: linear-gradient(90deg,
            var(--border) 0%,
            var(--soft) 50%,
            var(--border) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================
   CUSTOM SELECT STYLING
   ============================ */
.form-select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-select::-ms-expand {
    display: none;
}

/* ============================
   LOADING STATE
   ============================ */
.loading {
    pointer-events: none;
    opacity: 0.6;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border: 3px solid var(--border);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================
   ENHANCED TRANSITIONS
   ============================ */
.card-body {
    transition: all var(--transition-base);
}

/* Smooth color transitions for theme changes */
* {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-duration: var(--transition-base);
    transition-timing-function: ease-in-out;
}

/* Exclude specific properties from global transition */
*:not(.no-transition) {
    transition: background-color var(--transition-base),
        border-color var(--transition-base),
        color var(--transition-base);
}

.video-card.playlist .video-thumb {
    background: linear-gradient(135deg,
            var(--brand, #0b3b61),
            var(--accent, #d4af37));
    border-radius: var(--radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    padding: 15px;
    min-height: 200px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.video-card.playlist:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.video-card.playlist .video-thumb img {
    display: none;
}

.video-card.playlist .playlist-title {
    color: var(--surface);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    z-index: 2;
    line-height: 1.2;
}

/* Ensure chart canvases are responsive */
canvas {
    max-width: 100%;
    height: auto !important;
}

/* ============================
   HISTORY PANEL STYLING (THEME-AWARE)
   ============================ */
#playlistPanel .card {
    background-color: var(--soft);
    border-left: 1px solid var(--border);
    border-top: none;
    border-right: none;
    border-bottom: none;
    box-shadow: none;
}

#historyQueue {
    overflow-y: auto;
}

/* Custom scrollbar for the history queue to make it more subtle */
#historyQueue::-webkit-scrollbar {
    width: 6px;
}

#historyQueue::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

#historyQueue::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}

.history-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    border-bottom: 1px solid var(--border);
    background-color: transparent;
    width: 100%;
    text-align: left;
    color: var(--text);
}

.history-item:last-child {
    border-bottom: none;
}

.history-item:hover {
    background-color: var(--surface-light);
    border-color: var(--accent);
    transform: translateX(2px);
}

.history-item.active {
    background-color: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
    box-shadow: var(--shadow-sm);
}

.history-item.active .history-title {
    color: var(--dark-text) !important;
}

/* FIX: Use dark-text for icon color on active item */
.history-item.active::before {
    content: "\f4f4";
    font-family: "bootstrap-icons";
    font-size: 1.2rem;
    color: var(--dark-text);
    margin-right: 0.5rem;
    animation: pulse-icon 1.5s infinite ease-in-out;
}

@keyframes pulse-icon {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.history-item img {
    width: 80px;
    height: 45px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.history-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* ============================
   PROFESSIONAL NOTIFICATIONS
   ============================ */
#notifListContainer {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border: none !important;
    border-bottom: 1px solid var(--border) !important;
    background-color: var(--surface);
    transition: background-color var(--transition-fast);
}

.notification-item:hover {
    background-color: var(--soft);
}

.notification-item.unread {
    background-color: rgba(var(--brand-rgb), 0.08);
}

.notification-item .icon {
    font-size: 1.5rem;
    min-width: 2rem;
    text-align: center;
}

.notification-item .content {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text);
}

.notification-item .timestamp {
    font-size: 0.75rem;
    color: var(--muted);
}

/* ============================
   QUILL CONTENT STYLING FIX
   ============================ */
/* Target the read-only containers for discussion content */
#threadContent .ql-editor,
#repliesContainer .ql-editor {
    background-color: var(--surface);
    color: var(--text);
    padding: 4px 8px;
    font-size: 1rem;
    border-radius: 8px;
    min-height: 1rem;
    /* IMPORTANT: Retire les styles par défaut du navigateur/Quill */
    all: unset; 
    display: block; 
    box-sizing: border-box;
}

/* Forcer tous les éléments à l'intérieur de Quill à utiliser la couleur du thème,
   tout en gérant le contraste dynamique si nécessaire. */
#threadContent .ql-editor *,
#repliesContainer .ql-editor * {
    /* Retirer les styles de couleur/fond en ligne ajoutés par Quill */
    color: inherit !important;
    background-color: transparent !important;
}

/* Assurer que les listes et titres sont bien formatés */
#threadContent .ql-editor,
#repliesContainer .ql-editor {
    /* Forcer l'utilisation de la couleur de texte standard du thème */
    color: var(--text);
}

/* Surcharge pour le cas de la couleur dynamique (appliquée plus tard) */


.ql-editor ol li,
.ql-editor ul li {
    background: transparent !important;
    color: inherit !important; 
    /* Utilise la couleur du parent */
}

.ql-editor h1, .ql-editor h2, .ql-editor h3, .ql-editor h4 {
    /* Les titres de Quill ne sont pas les titres H2/H3 de la vue, donc ils doivent être noirs/blancs, pas la couleur de marque. */
    color: var(--text) !important;
    /* Retirer l'effet text-shadow agressif des titres de la vue */
    text-shadow: none !important; 
    -webkit-text-stroke: none !important;
}

.ql-editor pre.ql-syntax {
    background-color: var(--soft) !important;
    border: 1px solid var(--border);
    color: var(--text) !important;
    border-radius: var(--radius-sm);
    padding: 1rem;
}

/* ============================
   PERFECT TOAST NOTIFICATIONS
   ============================ */
#toastContainer {
    z-index: 1100;
}

.custom-toast {
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    padding: 0.75rem 1.25rem;
}

.custom-toast.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.85), rgba(5, 150, 105, 0.85));
}

.custom-toast.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.85), rgba(220, 38, 38, 0.85));
}

.custom-toast.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.85), rgba(217, 119, 6, 0.85));
}

.custom-toast.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.85), rgba(37, 99, 235, 0.85));
}

.custom-toast .btn-close {
    background: rgba(255, 255, 255, 0.2) url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e") center/0.7em auto no-repeat;
    border-radius: var(--radius-sm);
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.custom-toast .btn-close:hover {
    background-color: rgba(255, 255, 255, 0.3);
    opacity: 1;
    transform: scale(1.1);
}

/* ============================
   ADVANCED CALENDAR EVENT STYLING
   ============================ */
.fc-event {
    border-radius: var(--radius-sm) !important;
    border-width: 1px !important;
    padding: 2px 6px !important;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast) !important;
}

.fc-event-title {
    color: var(--dark-text) !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fc-daygrid-event {
    box-shadow: var(--shadow-sm);
}

.fc-daygrid-event:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.03);
}

.fc-timegrid-event {
    box-shadow: var(--shadow) !important;
}

.fc-event.has-alarm .fc-event-title {
    padding-left: 20px;
    position: relative;
}

.fc-event.has-alarm .fc-event-title::before {
    content: "\f102";
    font-family: "bootstrap-icons";
    font-weight: normal;
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9em;
    opacity: 0.9;
}

/* ==================================== */
/* NEW/UPDATED: ADMIN STYLING BLOCKS */
/* ==================================== */

/* Admin-specific styles */
.admin-verified {
    color: var(--admin-color) !important;
    margin-left: 5px;
    font-size: var(--admin-icon-size);
}

.admin-thread-card {
    border-left: 4px solid var(--admin-color);
    background-color: var(--surface-light) !important;
    box-shadow: var(--admin-shadow);
    transition: all var(--transition-base);
}

.admin-thread-card:hover {
    box-shadow: 0 4px 15px rgba(var(--admin-rgb, 0, 188, 212), 0.4);
}

.admin-reply-card {
    background-color: var(--soft) !important; /* Utiliser soft pour une meilleure distinction */
    border-left: 3px solid var(--admin-border-light);
    border-top: 1px solid var(--admin-border-light);
}

/* ==================================== */
/* 5. DYNAMIC COLOR OVERRIDE LOGIC (FINAL & CORRECTED) */
/* ==================================== */

#mainContent[data-bg] a,
#mainContent[data-bg] .text-gradient,
body[data-dynamic-bg-active] .dropdown-item:hover a {
    color: var(--dynamic-brand, var(--brand)) !important;
}

/* Boutons primaires (Couleur dynamique + Texte blanc) */
#mainContent[data-bg] .btn-primary {
    background: linear-gradient(135deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, #0d5a8f)) !important;
    border: none !important;
    color: var(--dark-text) !important;
}

/* Boutons Outlines */
#mainContent[data-bg] .btn-outline-primary {
    border-color: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dynamic-brand, var(--brand)) !important;
}
#mainContent[data-bg] .btn-outline-primary:hover {
    background: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dark-text) !important;
}

/* Titres dans la nav bar */
body[data-dynamic-bg-active] .navbar-brand > div > div:first-child {
    color: var(--dynamic-brand, var(--brand)) !important;
}

#mainContent[data-bg] .progress-bar {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
}

#mainContent[data-bg] .card-modern:hover::before {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
    opacity: 1;
}

/* --- Priorité 2: Surfaces et Lisibilité Générale (Cartes et Texte) --- */

/* Cartes: Utilisation de la couleur de surface dynamique avec Glassmorphism */
#mainContent[data-bg] .card-modern {
    background: var(--dynamic-surface-color, rgba(255, 255, 255, 0.85)); 
    backdrop-filter: var(--backdrop-blur) saturate(120%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(120%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.2); 
    color: var(--dynamic-text-color, var(--text)) !important;
}

/* NOUVEAU: Appliquer le fond Glassmorphism au card-body, mais seulement s'il n'est pas Admin,
   pour s'assurer que le contenu Quill hérite correctement la couleur de contraste */
#mainContent[data-bg] .card-modern .card-body {
    background: inherit !important; /* Force le card-body à utiliser le fond du parent (.card-modern) */
    padding: 1rem 1.25rem; /* Ajustement esthétique */
}


/* Cible les paragraphes de l'auteur (qui ont la classe text-muted) */
#mainContent[data-bg] .card-body > .d-flex > .text-muted, 
#mainContent[data-bg] .card-body > .d-flex > .text-muted * {
    color: var(--dynamic-text-color, var(--muted)) !important;
    border-color: var(--dynamic-text-color, var(--border)) !important;
    opacity: 0.8;
}


/* Texte par défaut et titres des cartes (couleur dynamique inversée pour le contraste) */
#mainContent[data-bg] .card-modern p,
#mainContent[data-bg] .card-modern h5,
#mainContent[data-bg] .card-modern h6,
#mainContent[data-bg] .card-modern div:not(.video-thumb),
#mainContent[data-bg] .ql-editor {
    /* Utilise inherit pour que ces éléments prennent la couleur définie sur le .card-modern (qui est dynamic-text-color) */
    color: inherit !important; 
}
/* Surcharge des titres H2/H3 dans le contenu Quill pour garantir qu'ils utilisent la couleur de texte dynamique */
#mainContent[data-bg] .ql-editor h2,
#mainContent[data-bg] .ql-editor h3 {
    color: var(--dynamic-text-color, var(--text)) !important;
}

/* Titres H2 et H3 dans la vue (Tableau de bord, etc.) - EFFET AVANCÉ CONSERVÉ */
#mainContent[data-bg] > .view-content h2,
#mainContent[data-bg] > .view-content h3 {
    color: var(--dynamic-brand, var(--brand)) !important;
    
    /* Conserve l'effet Text Stroke/Shadow pour la lisibilité sur l'image de fond */
    text-shadow: 
        -1px -1px 0 var(--dynamic-shadow-color, black),
         1px -1px 0 var(--dynamic-shadow-color, black),
        -1px  1px 0 var(--dynamic-shadow-color, black),
         1px  1px 0 var(--dynamic-shadow-color, black),
         0 4px 10px rgba(0, 0, 0, 0.6); 
    -webkit-text-stroke: 1px var(--dynamic-shadow-color, black);
    -webkit-font-smoothing: antialiased;

    background: none !important;
    backdrop-filter: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
    transition: all var(--transition-base);
}

/* Petits textes/muted (pour le contraste) */
#mainContent[data-bg] .text-muted,
#mainContent[data-bg] .small {
    color: var(--dynamic-text-color, var(--muted)) !important;
    opacity: 0.8;
}

/* Calendrier: Assurer un bon contraste pour le FullCalendar */
#mainContent[data-bg] .fc-toolbar-title,
#mainContent[data-bg] .fc-col-header-cell {
    color: var(--dynamic-text-color, var(--text));
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
    background: var(--surface);
    background: rgba(var(--brand-rgb), 0.05);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
    position: sticky;
    top: 0;
    z-index: 1030;
}

[data-theme="dark"] .navbar {
    background: rgba(var(--brand-rgb), 0.1);
}

/* NOUVEAU/MODIFIÉ: Style Dynamique pour la Navbar */
body[data-dynamic-bg-active] .navbar {
    /* Utilise un dégradé très subtil basé sur les couleurs dynamiques */
    background: linear-gradient(90deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.85; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    /* Utilise l'opacité du RGB dynamique pour les bordures */
    border-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5); 
    box-shadow: var(--shadow-md);
}

/* Texte de la Navbar */
body[data-dynamic-bg-active] .navbar * {
    color: var(--dark-text) !important; /* Force le texte en clair/blanc sur le dégradé coloré */
}
body[data-dynamic-bg-active] .navbar-brand > div > div:first-child {
    color: var(--dark-text) !important; /* Le titre UMP reste blanc */
}
body[data-dynamic-bg-active] .navbar .btn-link {
    color: var(--dark-text) !important;
}
body[data-dynamic-bg-active] .navbar .btn-link:hover {
    background: rgba(255, 255, 255, 0.2); /* Hover subtil sur le dégradé */
}


.navbar-brand {
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: translateY(-1px);
}

.navbar-brand img {
    height: 44px;
    transition: transform var(--transition-base);
}

.navbar-brand:hover img {
    transform: scale(1.02);
}

.navbar .btn-link {
    color: var(--muted);
    position: relative;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.navbar .btn-link:hover {
    color: var(--brand);
    background: var(--brand-light);
    transform: translateY(-1px);
}

/* ============================
   SEARCH BOX
   ============================ */
.search-box {
    position: relative;
    max-width: 500px;
    width: 100%;
}

.search-box input {
    padding: 0.625rem 1rem 0.625rem 3rem;
    border-radius: 24px;
    border: 2px solid var(--border);
    background: var(--soft);
    color: var(--text);
    transition: all var(--transition-base);
    width: 100%;
    font-size: 0.9375rem;
}

.search-box input:focus {
    border-color: var(--brand);
    background: var(--surface);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.15);
    transform: translateY(-1px);
}

.search-box input::placeholder {
    color: var(--muted);
    opacity: 0.7;
}

.search-box i {
    position: absolute;
    left: 1.125rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    font-size: 1.125rem;
    transition: color var(--transition-fast);
    pointer-events: none;
}

.search-box input:focus~i {
    color: var(--brand);
}

/* ============================
   SIDEBAR
   ============================ */
.sidebar {
    position: fixed;
    top: 72px;
    left: 0;
    width: 280px;
    height: calc(100vh - 72px);
    background: var(--surface);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform var(--transition-base), background var(--transition-base);
    z-index: 1020;
    box-shadow: var(--shadow);
}

/* NOUVEAU/MODIFIÉ: Style Dynamique pour la Sidebar */
body[data-dynamic-bg-active] .sidebar {
    /* Utilise un dégradé vertical très subtil */
    background: linear-gradient(180deg, 
                var(--dynamic-brand, var(--brand)) 0%, 
                var(--dynamic-accent, var(--accent)) 100%);
    opacity: 0.9; 
    backdrop-filter: var(--backdrop-blur) saturate(140%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(140%);
    border-right-color: rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.5);
    box-shadow: var(--shadow-md);
}

/* Texte de la Sidebar */
body[data-dynamic-bg-active] .sidebar-item {
    color: var(--dark-text) !important; 
}
body[data-dynamic-bg-active] .sidebar-item:hover,
body[data-dynamic-bg-active] .sidebar-item.active {
    background: rgba(255, 255, 255, 0.2) !important; 
    color: var(--dark-text) !important;
}

/* Ligne active utilise la couleur d'accentuation (moins de confusion avec le fond) */
body[data-dynamic-bg-active] .sidebar-item::before {
     background: var(--dynamic-accent, var(--accent)) !important;
}


.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar.collapsed {
    transform: translateX(-280px);
}

.sidebar-item {
    padding: 0.875rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.875rem;
    color: var(--text);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
    position: relative;
    font-weight: 500;
    font-size: 0.9375rem;
}

.sidebar-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform var(--transition-base);
    transform-origin: center;
}

.sidebar-item:hover {
    background: linear-gradient(90deg, var(--brand-light) 0%, transparent 100%);
    color: var(--brand);
    padding-left: 1.625rem;
}

.sidebar-item.active {
    background: linear-gradient(90deg, var(--brand-light) 0%, transparent 100%);
    color: var(--brand);
    font-weight: 600;
}

.sidebar-item.active::before {
    transform: scaleY(1);
}

.sidebar-item i {
    font-size: 1.25rem;
    width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.sidebar-item:hover i {
    transform: scale(1.05);
}

/* ============================
   MAIN CONTENT
   ============================ */
.main-content {
    margin-left: 280px;
    min-height: calc(100vh - 72px);
    padding: 2rem;
    transition: margin-left var(--transition-base);
    background: var(--soft);
}

.main-content.expanded {
    margin-left: 0;
}

/* ============================
   CARDS
   ============================ */
.card-modern {
    border: 0;
    background: var(--surface);
    box-shadow: var(--shadow);
    border-radius: var(--radius-md);
    overflow: hidden;
    color: var(--text);
    transition: all var(--transition-base);
    position: relative;
}

.card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-modern:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

/* ============================
   COURSE CARDS
   ============================ */
.course-card {
    position: relative;
    overflow: hidden;
}

.course-thumbnail {
    height: 200px;
    width: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, var(--brand-light), rgba(212, 175, 55, 0.1));
    transition: all var(--transition-slow);
}

.course-card:hover .course-thumbnail {
    transform: scale(1.03);
}

.course-badge {
    position: absolute;
    top: 0.875rem;
    right: 0.875rem;
    background: var(--surface-light);
    backdrop-filter: var(--backdrop-blur);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--brand);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
    z-index: 10;
}

.course-card:hover .course-badge {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.progress-ring {
    position: absolute;
    top: 0.875rem;
    left: 0.875rem;
    width: 52px;
    height: 52px;
    background: var(--surface-light);
    backdrop-filter: var(--backdrop-blur);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text); /* Texte noir pour contraster avec le fond clair du ring */
    font-weight: 700;
    font-size: 0.75rem;
    box-shadow: var(--shadow);
    border: 3px solid var(--success);
    transition: all var(--transition-fast);
    z-index: 10;
}

.course-card:hover .progress-ring {
    transform: scale(1.05);
}

/* ============================
   STAT CARDS
   ============================ */
.stat-card {
    background: linear-gradient(135deg, var(--brand) 0%, #0d5a8f 100%);
    color: var(--dark-text);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -25%;
    width: 240px;
    height: 240px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    transition: transform var(--transition-slow);
}

.stat-card:hover::before {
    transform: scale(1.1) translate(-5px, 5px);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0.5rem 0;
    position: relative;
    z-index: 1;
}

.stat-card small {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    opacity: 0.95;
}

.stat-card i {
    font-size: 3.5rem;
    opacity: 0.2;
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    transition: all var(--transition-base);
}

.stat-card:hover i {
    opacity: 0.25;
    transform: translateY(-50%) rotate(5deg) scale(1.03);
}

/* ============================
   TIMELINE
   ============================ */
.timeline-item {
    position: relative;
    padding-left: 3rem;
    padding-bottom: 2rem;
    transition: opacity var(--transition-fast);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0.6875rem;
    top: 2rem;
    bottom: 0;
    background: linear-gradient(180deg, var(--accent) 0%, transparent 100%);
    width: 2px;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0.25rem;
    width: 28px;
    height: 28px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-text);
    font-size: 0.875rem;
    box-shadow: 0 0 0 4px var(--surface), var(--shadow);
    transition: all var(--transition-base);
    z-index: 10;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.08);
    box-shadow: 0 0 0 6px var(--surface), var(--shadow-md);
}

/* ============================
   VIDEO CARDS
   ============================ */
.video-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    color: var(--text); 
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
}

.video-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-card:hover::after {
    transform: scaleX(1);
}

.video-thumb {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.video-thumb-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-base);
    display: block;
}

.video-card:hover .video-thumb-img {
    transform: scale(1.04);
    filter: brightness(0.9);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(var(--brand-rgb), 0.5) 0%, rgba(0, 0, 0, 0.6) 100%);
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-base);
}

.video-card:hover .video-overlay {
    opacity: 1;
}

.play-icon {
    color: var(--dark-text);
    font-size: 3.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-base);
}

.video-card:hover .play-icon {
    transform: scale(1.1);
}

.video-badge {
    position: absolute;
    top: 0.875rem;
    left: 0.875rem;
    background: var(--brand);
    color: var(--dark-text);
    font-size: 0.6875rem;
    padding: 0.375rem 0.75rem;
    border-radius: 14px;
    font-weight: 600;
    box-shadow: var(--shadow);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-fast);
    z-index: 10;
}

.video-card:hover .video-badge {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.video-body {
    padding: 1rem 1.125rem;
}

.video-title {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    color: var(--text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-author {
    color: var(--muted);
    font-size: 0.8125rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ============================
   TABS
   ============================ */
.nav-tabs-modern {
    border: 0;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.nav-tabs-modern .nav-link {
    border: 0;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.5rem;
    color: var(--text);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-tabs-modern .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-tabs-modern .nav-link:hover {
    background: var(--brand-light);
    color: var(--brand);
}

.nav-tabs-modern .nav-link.active {
    background: var(--brand);
    color: var(--dark-text);
}

.nav-tabs-modern .nav-link.active::before {
    transform: scaleX(1);
}

/* ============================
   NOTIFICATIONS
   ============================ */
.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: var(--dark-text);
    border-radius: 50%;
    width: 22px;
    height: 22px;
    font-size: 0.6875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: var(--shadow);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* ============================
   DROPDOWN MENU
   ============================ */
.dropdown-menu {
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    animation: dropdownFade var(--transition-base) ease;
    border: 1px solid var(--border);
    padding: 0.5rem;
    min-width: 200px;
}

body[data-dynamic-bg-active] .dropdown-menu {
    /* Utilise la couleur de surface dynamique avec Glassmorphism */
    background: var(--dynamic-surface-color, rgba(255, 255, 255, 0.85));
    backdrop-filter: var(--backdrop-blur) saturate(120%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(120%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.2); 
    color: var(--dynamic-text-color, var(--text)); 
}


.dropdown-menu .dropdown-item {
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    padding: 0.625rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
}

.dropdown-menu .dropdown-item:hover {
    background: var(--brand-light);
    color: var(--brand);
    transform: translateX(2px);
}

.dropdown-menu .dropdown-item:active {
    background: rgba(var(--brand-rgb), 0.12);
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

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

/* ============================
   BUTTONS
   ============================ */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand) 0%, #0d5a8f 100%);
    border: none;
    box-shadow: var(--shadow);
    color: var(--dark-text);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-outline-primary {
    border: 2px solid var(--brand);
    color: var(--brand);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--brand);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline-secondary {
    border: 2px solid var(--muted);
    color: var(--muted);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--muted);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline-success {
    border: 2px solid var(--success);
    color: var(--success);
    background: transparent;
}

.btn-outline-success:hover {
    background: var(--success);
    color: var(--dark-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* ============================
   PROGRESS BARS
   ============================ */
.progress {
    border-radius: 10px;
    overflow: hidden;
    background: var(--border);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    transition: width var(--transition-slow);
    background: linear-gradient(90deg, var(--brand), var(--accent));
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* ============================
   MODALS - ENLARGED
   ============================ */
.modal-dialog {
    max-width: 900px;
    margin: 1.75rem auto;
}

.modal-dialog-centered {
    min-height: calc(100% - 3.5rem);
}

.video-modal .modal-dialog {
    max-width: 1200px;
    height: 95%;
}

.video-modal .modal-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.video-modal .modal-body {
    flex-grow: 1;
    overflow: hidden;
}

.video-modal .video-container iframe {
    height: 100%;
    width: 100%;
}

.document-modal .modal-dialog {
    max-width: 1100px;
}

.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    background: var(--surface);
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, var(--brand-light), transparent);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border-top: 1px solid var(--border);
    background: var(--surface-light);
}

.modal-backdrop {
    backdrop-filter: blur(4px);
    background: rgba(var(--brand-rgb), 0.3);
}

[data-theme="dark"] .modal-backdrop {
    background: rgba(0, 0, 0, 0.7);
}

.btn-close {
    /* UTILISATION DE SVG NOIR STATIQUE + FILTRES POUR LE MODE SOMBRE */
    background: transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e") center/1em auto no-repeat;
    width: 1.5rem;
    height: 1.5rem;
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.btn-close:hover {
    opacity: 1;
    transform: rotate(90deg);
}
/* Appliquer les filtres pour les thèmes sombres/dynamiques */
[data-theme="dark"] .btn-close,
[data-theme="elegant"] .btn-close,
[data-theme="midnight"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

body[data-dynamic-bg-active][data-dynamic-text="light"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}
body[data-dynamic-bg-active][data-dynamic-text="dark"] .btn-close {
    filter: none;
}


/* ============================
   FORM CONTROLS
   ============================ */
.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    transition: all var(--transition-fast);
    background: var(--soft);
    color: var(--text);
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--brand);
    background: var(--surface);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.15);
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--muted);
    opacity: 0.65;
}

/* ============================
   LOADER
   ============================ */
.loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================
   FADE IN ANIMATION
   ============================ */
.fade-in {
    animation: fadeIn 0.5s ease-in-out both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

/* Staggered animation for grids */
.fade-in:nth-child(1) {
    animation-delay: 0.05s;
}

.fade-in:nth-child(2) {
    animation-delay: 0.1s;
}

.fade-in:nth-child(3) {
    animation-delay: 0.15s;
}

.fade-in:nth-child(4) {
    animation-delay: 0.2s;
}

.fade-in:nth-child(5) {
    animation-delay: 0.25s;
}

.fade-in:nth-child(6) {
    animation-delay: 0.3s;
}

.fade-in:nth-child(7) {
    animation-delay: 0.35s;
}

.fade-in:nth-child(8) {
    animation-delay: 0.4s;
}

.fade-in:nth-child(9) {
    animation-delay: 0.45s;
}

.fade-in:nth-child(10) {
    animation-delay: 0.5s;
}

/* ============================
   WELCOME MESSAGE
   ============================ */
#welcomeMessage {
    color: var(--brand);
    font-size: 0.9375rem;
    white-space: nowrap;
    font-weight: 500;
    transition: color var(--transition-fast);
}

[data-theme="dark"] #welcomeMessage {
    color: var(--accent);
}

/* ============================
   BREADCRUMB
   ============================ */
#breadcrumb {
    font-size: 0.875rem;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.breadcrumb-link,
.breadcrumb-current {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-sm);
    background-color: var(--surface);
    border: 1px solid var(--border);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.breadcrumb-link {
    color: var(--brand);
    text-decoration: none;
}

.breadcrumb-link:hover {
    background-color: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.breadcrumb-current {
    color: var(--text);
    background-color: var(--soft);
}

/* ============================
   ALERTS & TOASTS
   ============================ */
.alert {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow);
    animation: slideInRight 0.3s ease-out;
    padding: 1rem 1.25rem;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

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

.alert-success {
    background: linear-gradient(135deg, var(--success) 0%, #0d9488 100%);
    color: #fff;
}

.alert-info {
    background: linear-gradient(135deg, var(--info) 0%, #2563eb 100%);
    color: #fff;
}

.alert-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #f59e0b 100%);
    color: #fff;
}

.alert-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: #fff;
}

/* ============================
   PROFILE DROPDOWN
   ============================ */
#profileDropdown img {
    transition: all var(--transition-fast);
    box-shadow: var(--shadow);
}

#profileDropdown:hover img {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

.dropdown-toggle::after {
    transition: transform var(--transition-fast);
}

.dropdown-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

/* ============================
   VIDEO/DOCUMENT CONTAINERS
   ============================ */
.video-container,
.document-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: var(--surface-dark);
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 500px;
}

.video-container iframe,
.document-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ============================
   CALENDAR EVENTS
   ============================ */
#calendarEvents .d-flex {
    padding: 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

#calendarEvents .d-flex:hover {
    background: var(--brand-light);
    transform: translateX(4px);
}

#calendarEvents .bg-primary,
#calendarEvents .bg-warning {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
}

#calendarEvents .d-flex:hover .bg-primary,
#calendarEvents .d-flex:hover .bg-warning {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

/* ============================
   NOTES CARDS
   ============================ */
#notesList .card-modern {
    border-left: 4px solid var(--accent);
}

#notesList .card-modern:hover {
    border-left-color: var(--brand);
}

/* ============================
   CHART CONTAINER
   ============================ */
#progressChart {
    border-radius: var(--radius-md);
    padding: 1rem;
}

/* ============================
   THEME SELECT
   ============================ */
#themeSelect {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23${(getComputedStyle(document.body).getPropertyValue('--text') == '#f1f5f9' ? 'aaa' : '666')}' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
}

/* ============================
   AUTH MODAL ENHANCEMENTS
   ============================ */
#modalAuth .modal-dialog {
    max-width: 550px;
}

#modalAuth .modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, var(--brand-light), transparent);
}

#modalAuth .nav-tabs-modern {
    border-bottom: none;
    margin-bottom: 0;
}

#modalAuth .tab-content {
    padding-top: 1rem;
}

#modalAuth input[type="email"],
#modalAuth input[type="password"],
#modalAuth input[type="text"] {
    font-size: 0.9375rem;
    padding: 0.875rem 1.125rem;
    border-radius: var(--radius-sm);
}

#modalAuth .btn {
    font-size: 0.9375rem;
    padding: 0.875rem;
    font-weight: 600;
}

.btn-outline-dark {
    border: 2px solid var(--border);
    color: var(--text);
    background: var(--surface-light);
}

.btn-outline-dark:hover {
    background: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
}

/* ============================
   EMPTY STATE
   ============================ */
.text-center.text-muted {
    padding: 3rem 1rem;
    color: var(--brand);
}

.text-center.text-muted i {
    opacity: 0.5;
    transition: all var(--transition-base);
}

.card-modern:hover .text-center.text-muted i {
    opacity: 0.65;
    transform: scale(1.03);
}

/* ============================
   BADGES & LABELS
   ============================ */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.3px;
}

/* ============================
   RESPONSIVE ADJUSTMENTS
   ============================ */
@media (max-width: 1399px) {
    .main-content {
        padding: 1.5rem;
    }

    .modal-dialog {
        max-width: 800px;
    }

    .video-modal .modal-dialog {
        max-width: 1000px;
    }
}

@media (max-width: 1199px) {
    .stat-card h3 {
        font-size: 2rem;
    }

    .stat-card i {
        font-size: 3rem;
    }

    .modal-dialog {
        max-width: 700px;
    }
}

@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-280px);
        box-shadow: none;
    }

    .sidebar.show {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }

    .main-content {
        margin-left: 0;
        padding: 1.5rem;
    }

    .search-box {
        max-width: 100%;
    }

    .navbar-brand div {
        font-size: 0.8125rem;
    }

    .stat-card {
        padding: 1.5rem;
    }

    .stat-card h3 {
        font-size: 1.75rem;
    }

    .video-thumb-img {
        height: 180px;
    }

    .modal-dialog {
        max-width: 90%;
        margin: 1rem auto;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-header {
        padding: 1.25rem 1.5rem;
    }
}

@media (max-width: 767px) {
    .main-content {
        padding: 1rem;
    }

    .navbar-brand img {
        height: 36px;
    }

    .course-thumbnail {
        height: 160px;
    }

    .stat-card {
        padding: 1.25rem;
    }

    .stat-card h3 {
        font-size: 1.5rem;
    }

    .stat-card i {
        font-size: 2.5rem;
        right: 1rem;
    }

    .card-modern {
        border-radius: var(--radius-sm);
    }

    .video-thumb-img {
        height: 160px;
    }

    .timeline-item {
        padding-left: 2.5rem;
    }

    .dropdown-menu {
        min-width: 280px;
    }

    #modalAuth .modal-body {
        padding: 1.5rem 1rem;
    }

    .modal-dialog {
        max-width: 95%;
        margin: 0.5rem auto;
    }

    .modal-title {
        font-size: 1.25rem;
    }

    .video-container,
    .document-container {
        min-height: 350px;
    }

    /* FIX: Ensure calendar events remain readable on small screens */
    .fc-event {
        font-size: 0.75rem !important;
        padding: 1px 4px !important;
    }

    .fc-event-title-wrap {
        /* Prevent title text from wrapping too much in day/week view */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
    }
}

@media (max-width: 575px) {
    h2 {
        font-size: 1.5rem;
    }

    .stat-card h3 {
        font-size: 1.25rem;
    }

    .stat-card::before {
        width: 180px;
        height: 180px;
    }

    .play-icon {
        font-size: 2.5rem;
    }

    .course-thumbnail {
        height: 140px;
    }

    .video-thumb-img {
        height: 140px;
    }

    .navbar {
        padding: 0.5rem 0.75rem;
    }

    .search-box input {
        font-size: 0.875rem;
        padding: 0.5rem 0.875rem 0.5rem 2.5rem;
    }

    .search-box i {
        left: 0.875rem;
        font-size: 1rem;
    }

    .video-container,
    .document-container {
        min-height: 280px;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    /* FIX: Reduce padding on notification items in dropdown on mobile */
    .notification-item {
        padding: 0.6rem 0.5rem;
    }
}

/* ============================
   PRINT STYLES
   ============================ */
@media print {

    .navbar,
    .sidebar,
    .btn,
    .dropdown {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    .card-modern {
        box-shadow: none !important;
        page-break-inside: avoid;
    }
}

/* ============================
   ACCESSIBILITY IMPROVEMENTS
   ============================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card-modern {
        border: 2px solid var(--border);
    }

    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================
   UTILITY CLASSES
   ============================ */
.text-gradient {
    background: linear-gradient(135deg, var(--brand), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass-effect {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hover-lift {
    transition: transform var(--transition-fast);
}

.hover-lift:hover {
    transform: translateY(-2px);
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.box-glow {
    box-shadow: 0 0 20px rgba(11, 59, 97, 0.3);
}

[data-theme="dark"] .box-glow {
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.3);
}

/* ============================
   SKELETON LOADING
   ============================ */
.skeleton {
    background: linear-gradient(90deg,
            var(--border) 0%,
            var(--soft) 50%,
            var(--border) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================
   CUSTOM SELECT STYLING
   ============================ */
.form-select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-select::-ms-expand {
    display: none;
}

/* ============================
   LOADING STATE
   ============================ */
.loading {
    pointer-events: none;
    opacity: 0.6;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border: 3px solid var(--border);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================
   ENHANCED TRANSITIONS
   ============================ */
.card-body {
    transition: all var(--transition-base);
}

/* Smooth color transitions for theme changes */
* {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-duration: var(--transition-base);
    transition-timing-function: ease-in-out;
}

/* Exclude specific properties from global transition */
*:not(.no-transition) {
    transition: background-color var(--transition-base),
        border-color var(--transition-base),
        color var(--transition-base);
}

.video-card.playlist .video-thumb {
    background: linear-gradient(135deg,
            var(--brand, #0b3b61),
            var(--accent, #d4af37));
    border-radius: var(--radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    padding: 15px;
    min-height: 200px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.video-card.playlist:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.video-card.playlist .video-thumb img {
    display: none;
}

.video-card.playlist .playlist-title {
    color: var(--surface);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    z-index: 2;
    line-height: 1.2;
}

/* Ensure chart canvases are responsive */
canvas {
    max-width: 100%;
    height: auto !important;
}

/* ============================
   HISTORY PANEL STYLING (THEME-AWARE)
   ============================ */
#playlistPanel .card {
    background-color: var(--soft);
    border-left: 1px solid var(--border);
    border-top: none;
    border-right: none;
    border-bottom: none;
    box-shadow: none;
}

#historyQueue {
    overflow-y: auto;
}

/* Custom scrollbar for the history queue to make it more subtle */
#historyQueue::-webkit-scrollbar {
    width: 6px;
}

#historyQueue::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

#historyQueue::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}

.history-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    border-bottom: 1px solid var(--border);
    background-color: transparent;
    width: 100%;
    text-align: left;
    color: var(--text);
}

.history-item:last-child {
    border-bottom: none;
}

.history-item:hover {
    background-color: var(--surface-light);
    border-color: var(--accent);
    transform: translateX(2px);
}

.history-item.active {
    background-color: var(--brand);
    color: var(--dark-text);
    border-color: var(--brand);
    box-shadow: var(--shadow-sm);
}

.history-item.active .history-title {
    color: var(--dark-text) !important;
}

/* FIX: Use dark-text for icon color on active item */
.history-item.active::before {
    content: "\f4f4";
    font-family: "bootstrap-icons";
    font-size: 1.2rem;
    color: var(--dark-text);
    margin-right: 0.5rem;
    animation: pulse-icon 1.5s infinite ease-in-out;
}

@keyframes pulse-icon {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.history-item img {
    width: 80px;
    height: 45px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.history-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* ============================
   PROFESSIONAL NOTIFICATIONS
   ============================ */
#notifListContainer {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border: none !important;
    border-bottom: 1px solid var(--border) !important;
    background-color: var(--surface);
    transition: background-color var(--transition-fast);
}

.notification-item:hover {
    background-color: var(--soft);
}

.notification-item.unread {
    background-color: rgba(var(--brand-rgb), 0.08);
}

.notification-item .icon {
    font-size: 1.5rem;
    min-width: 2rem;
    text-align: center;
}

.notification-item .content {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text);
}

.notification-item .timestamp {
    font-size: 0.75rem;
    color: var(--muted);
}

/* ============================
   QUILL CONTENT STYLING FIX
   ============================ */
/* Target the read-only containers for discussion content */
#threadContent .ql-editor,
#repliesContainer .ql-editor {
    background-color: var(--surface);
    color: var(--text);
    padding: 4px 8px;
    font-size: 1rem;
    border-radius: 8px;
    min-height: 1rem;
    /* IMPORTANT: Retire les styles par défaut du navigateur/Quill */
    all: unset; 
    display: block; 
    box-sizing: border-box;
}

/* Forcer tous les éléments à l'intérieur de Quill à utiliser la couleur du thème,
   tout en gérant le contraste dynamique si nécessaire. */
#threadContent .ql-editor *,
#repliesContainer .ql-editor * {
    /* Retirer les styles de couleur/fond en ligne ajoutés par Quill */
    color: inherit !important;
    background-color: transparent !important;
}

/* Assurer que les listes et titres sont bien formatés */
#threadContent .ql-editor,
#repliesContainer .ql-editor {
    /* Forcer l'utilisation de la couleur de texte standard du thème */
    color: var(--text);
}

/* Surcharge pour le cas de la couleur dynamique (appliquée plus tard) */


.ql-editor ol li,
.ql-editor ul li {
    background: transparent !important;
    color: inherit !important; 
    /* Utilise la couleur du parent */
}

.ql-editor h1, .ql-editor h2, .ql-editor h3, .ql-editor h4 {
    /* Les titres de Quill ne sont pas les titres H2/H3 de la vue, donc ils doivent être noirs/blancs, pas la couleur de marque. */
    color: var(--text) !important;
    /* Retirer l'effet text-shadow agressif des titres de la vue */
    text-shadow: none !important; 
    -webkit-text-stroke: none !important;
}

.ql-editor pre.ql-syntax {
    background-color: var(--soft) !important;
    border: 1px solid var(--border);
    color: var(--text) !important;
    border-radius: var(--radius-sm);
    padding: 1rem;
}

/* ============================
   PERFECT TOAST NOTIFICATIONS
   ============================ */
#toastContainer {
    z-index: 1100;
}

.custom-toast {
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    padding: 0.75rem 1.25rem;
}

.custom-toast.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.85), rgba(5, 150, 105, 0.85));
}

.custom-toast.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.85), rgba(220, 38, 38, 0.85));
}

.custom-toast.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.85), rgba(217, 119, 6, 0.85));
}

.custom-toast.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.85), rgba(37, 99, 235, 0.85));
}

.custom-toast .btn-close {
    background: rgba(255, 255, 255, 0.2) url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e") center/0.7em auto no-repeat;
    border-radius: var(--radius-sm);
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.custom-toast .btn-close:hover {
    background-color: rgba(255, 255, 255, 0.3);
    opacity: 1;
    transform: scale(1.1);
}

/* ============================
   ADVANCED CALENDAR EVENT STYLING
   ============================ */
.fc-event {
    border-radius: var(--radius-sm) !important;
    border-width: 1px !important;
    padding: 2px 6px !important;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast) !important;
}

.fc-event-title {
    color: var(--dark-text) !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fc-daygrid-event {
    box-shadow: var(--shadow-sm);
}

.fc-daygrid-event:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.03);
}

.fc-timegrid-event {
    box-shadow: var(--shadow) !important;
}

.fc-event.has-alarm .fc-event-title {
    padding-left: 20px;
    position: relative;
}

.fc-event.has-alarm .fc-event-title::before {
    content: "\f102";
    font-family: "bootstrap-icons";
    font-weight: normal;
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9em;
    opacity: 0.9;
}

/* ====================================
   ADMIN STYLING BLOCKS
   ==================================== */

/* Admin-specific styles */
.admin-verified {
    color: var(--admin-color) !important;
    margin-left: 5px;
    font-size: var(--admin-icon-size);
}

.admin-thread-card {
    border-left: 4px solid var(--admin-color);
    background-color: var(--surface-light) !important;
    box-shadow: var(--admin-shadow);
    transition: all var(--transition-base);
}

.admin-thread-card:hover {
    box-shadow: 0 4px 15px rgba(var(--admin-rgb, 0, 188, 212), 0.4);
}

.admin-reply-card {
    background-color: var(--soft) !important; /* Utiliser soft pour une meilleure distinction */
    border-left: 3px solid var(--admin-border-light);
    border-top: 1px solid var(--admin-border-light);
}

/* ====================================
   DYNAMIC COLOR OVERRIDE LOGIC
   ==================================== */

#mainContent[data-bg] a,
#mainContent[data-bg] .text-gradient,
body[data-dynamic-bg-active] .dropdown-item:hover a {
    color: var(--dynamic-brand, var(--brand)) !important;
}

/* Boutons primaires (Couleur dynamique + Texte blanc) */
#mainContent[data-bg] .btn-primary {
    background: linear-gradient(135deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, #0d5a8f)) !important;
    border: none !important;
    color: var(--dark-text) !important;
}

/* Boutons Outlines */
#mainContent[data-bg] .btn-outline-primary {
    border-color: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dynamic-brand, var(--brand)) !important;
}
#mainContent[data-bg] .btn-outline-primary:hover {
    background: var(--dynamic-brand, var(--brand)) !important;
    color: var(--dark-text) !important;
}

/* Titres dans la nav bar */
body[data-dynamic-bg-active] .navbar-brand > div > div:first-child {
    color: var(--dark-text) !important;
}

#mainContent[data-bg] .progress-bar {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
}

#mainContent[data-bg] .card-modern:hover::before {
    background: linear-gradient(90deg, var(--dynamic-brand, var(--brand)), var(--dynamic-accent, var(--accent))) !important;
    opacity: 1;
}

/* --- Priorité 2: Surfaces et Lisibilité Générale (Cartes et Texte) --- */

/* Cartes: Utilisation de la couleur de surface dynamique avec Glassmorphism */
#mainContent[data-bg] .card-modern {
    background: var(--dynamic-surface-color, rgba(255, 255, 255, 0.85)); 
    backdrop-filter: var(--backdrop-blur) saturate(120%);
    -webkit-backdrop-filter: var(--backdrop-blur) saturate(120%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(var(--dynamic-brand-rgb, var(--brand-rgb)), 0.2); 
    color: var(--dynamic-text-color, var(--text)) !important;
}

/* Appliquer le fond Glassmorphism au card-body, mais seulement s'il n'est pas Admin,
   pour s'assurer que le contenu Quill hérite correctement la couleur de contraste */
#mainContent[data-bg] .card-modern .card-body {
    background: inherit !important; /* Force le card-body à utiliser le fond du parent (.card-modern) */
    padding: 1rem 1.25rem; 
}


/* Cible les paragraphes de l'auteur (qui ont la classe text-muted) */
#mainContent[data-bg] .card-body > .d-flex > .text-muted, 
#mainContent[data-bg] .card-body > .d-flex > .text-muted * {
    color: var(--dynamic-text-color, var(--muted)) !important;
    border-color: var(--dynamic-text-color, var(--border)) !important;
    opacity: 0.8;
}


/* Texte par défaut et titres des cartes (couleur dynamique inversée pour le contraste) */
#mainContent[data-bg] .card-modern p,
#mainContent[data-bg] .card-modern h5,
#mainContent[data-bg] .card-modern h6,
#mainContent[data-bg] .card-modern div:not(.video-thumb),
#mainContent[data-bg] .ql-editor {
    color: inherit !important; 
}
/* Surcharge des titres H2/H3 dans le contenu Quill pour garantir qu'ils utilisent la couleur de texte dynamique */
#mainContent[data-bg] .ql-editor h2,
#mainContent[data-bg] .ql-editor h3 {
    color: var(--dynamic-text-color, var(--text)) !important;
}

/* Titres H2 et H3 dans la vue (Tableau de bord, etc.) - EFFET AVANCÉ CONSERVÉ */
#mainContent[data-bg] > .view-content h2,
#mainContent[data-bg] > .view-content h3 {
    color: var(--dynamic-brand, var(--brand)) !important;
    
    /* Conserve l'effet Text Stroke/Shadow pour la lisibilité sur l'image de fond */
    text-shadow: 
        -1px -1px 0 var(--dynamic-shadow-color, black),
         1px -1px 0 var(--dynamic-shadow-color, black),
        -1px  1px 0 var(--dynamic-shadow-color, black),
         1px  1px 0 var(--dynamic-shadow-color, black),
         0 4px 10px rgba(0, 0, 0, 0.6); 
    -webkit-text-stroke: 1px var(--dynamic-shadow-color, black);
    -webkit-font-smoothing: antialiased;

    background: none !important;
    backdrop-filter: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
    transition: all var(--transition-base);
}

/* Petits textes/muted (pour le contraste) */
#mainContent[data-bg] .text-muted,
#mainContent[data-bg] .small {
    color: var(--dynamic-text-color, var(--muted)) !important;
    opacity: 0.8;
}

/* Calendrier: Assurer un bon contraste pour le FullCalendar */
#mainContent[data-bg] .fc-toolbar-title,
#mainContent[data-bg] .fc-col-header-cell {
    color: var(--dynamic-text-color, var(--text));
}

/* ============================
   BIBLIOTHEQUE CARDS (AMÉLIORÉ)
   ============================ */
.book-card {
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    background: var(--surface);
    border: 1px solid var(--border);
}

.book-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.book-card .book-cover {
    width: 100%;
    height: 220px; /* Taille légèrement augmentée pour la visibilité */
    object-fit: cover;
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
    transition: transform var(--transition-fast);
    /* Ajout d'une ombre interne subtile pour le réalisme de la couverture */
    box-shadow: inset 0 -5px 10px rgba(0, 0, 0, 0.1);
}

.book-card:hover .book-cover {
    transform: scale(1.05);
    filter: brightness(0.95);
}

.book-card .card-body {
    padding: 0.75rem;
    text-align: left;
    /* Assure que le body de la carte de livre utilise le fond standard */
    background: var(--surface); 
}

.book-card .card-title {
    font-size: 0.95rem;
    font-weight: 700; /* Plus marqué */
    line-height: 1.3;
    color: var(--text); 
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.4em;
    margin-bottom: 0.5rem;
}

.book-card small.text-muted {
    font-size: 0.8rem;
    display: block;
    margin-bottom: 0.5rem;
}

/* Styles pour le bouton de détails */
.book-card .btn-outline-primary {
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    padding: 0.4rem 0.75rem;
}

/* ============================
   LOAD MORE BUTTON
   ============================ */

#loadMoreContainer {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

#loadMoreBtn {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid var(--brand);
    color: var(--brand);
    background: transparent;
    transition: all var(--transition-fast);
    position: relative;
}

#loadMoreBtn:hover:not(:disabled) {
    background: var(--brand);
    color: var(--dark-text);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#loadMoreBtn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#loadMoreLoader {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
}

/* ============================
   BOOK DETAIL VIEW
   ============================ */

#bookDetailView {
    animation: fadeIn 0.3s ease-in;
}

/* Conteneur principal de la vue détail */
#bookDetailContent {
    /* Retiré le fond car nous le rendons avec une carte à l'intérieur */
    border-radius: var(--radius-lg);
    padding: 0;
}

/* La carte qui contient le contenu */
#bookDetailContent .card-modern {
    padding: 2rem !important; /* Force le padding intérieur */
    box-shadow: var(--shadow-md);
}

.book-cover-lg {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast);
}

.book-cover-lg:hover {
    transform: scale(1.02);
}

#bookDetailContent h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

#bookDetailContent .badge {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

#bookDetailContent .text-gradient {
    /* Style du titre du résumé */
    font-weight: 700;
}

/* ============================
   BOOK PREVIEW (IFRAME)
   ============================ */

.book-preview-container {
    position: relative;
    width: 100%;
    padding-bottom: 75%; /* Ratio 4:3 pour le lecteur */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    background: var(--soft);
    border: 2px solid var(--border);
}

.book-preview-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--radius-md);
}


/* ============================
   UTILITIES & HELPERS
   ============================ */

.hover-lift {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.text-gradient {
    background: linear-gradient(135deg, var(--brand), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================
   RESPONSIVE ADJUSTMENTS
   ============================ */

@media (max-width: 768px) {
    #librarySearchForm {
        flex-direction: column;
    }
    
    #librarySearchBtn {
        width: 100%;
    }
    
    .book-card .book-cover {
        height: 200px;
    }
    
    #bookDetailContent .card-modern {
        padding: 1.5rem !important;
    }
    
    #bookDetailContent h3 {
        font-size: 1.5rem;
    }
    
    .book-preview-container {
        padding-bottom: 100%; /* Plus carré sur mobile */
    }
}

@media (max-width: 576px) {
    .book-card .book-cover {
        height: 180px;
    }
    
    .book-card .card-title {
        font-size: 0.9rem;
    }
    
    #loadMoreBtn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .book-card .btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.5rem;
    }
}

/* ============================
   DISCUSSION AVATAR STYLES (NEW)
   ============================ */
/* ============================
   DISCUSSION AVATAR STYLES (CORRIGÉ)
   ============================ */

.reply-avatar {
    /* Styles de base */
    border-radius: 50%;
    width: 45px;
    height: 45px;
    object-fit: cover;
    border: 2px solid var(--border); 
    transition: all var(--transition-fast);
    /* S'assurer que le z-index est suffisant pour les ombres */
    position: relative; 
    z-index: 10;
}

/* Surcharge pour l'Admin Avatar */
.reply-avatar.admin-avatar {
    /* Utilise la couleur admin pour encadrer l'avatar de l'administrateur */
    border: 3px solid var(--admin-color) !important; 
    box-shadow: 0 0 5px var(--admin-color);
}

/* Amélioration pour les thèmes dynamiques (surcharge le bord par défaut) */
body[data-dynamic-bg-active] .reply-avatar {
    /* Le bord doit être contrasté par rapport à l'arrière-plan de la carte */
    border-color: var(--dynamic-text-color, var(--border)); 
}
/* Mais l'Admin doit toujours conserver son cadre bleu */
body[data-dynamic-bg-active] .reply-avatar.admin-avatar {
    border-color: var(--admin-color) !important; 
}


/* Assurer que la section des métadonnées (Par: Auteur) s'aligne correctement */
#repliesContainer .d-flex.align-items-start > .flex-grow-1 {
    min-width: 0; /* Permet au contenu de répondre correctement */
}


.admin-reply-card {
    border-left: 4px solid #007bff;
    background-color: #f8faff;
}
.admin-reply-card strong {
    color: #007bff;
}
#bookDetailContent .rounded-3 {
  box-shadow: 0 2px 10px rgba(220, 53, 69, 0.25);
  transition: transform 0.2s ease;
}
#bookDetailContent .rounded-3:hover {
  transform: translateY(-2px);
}