/**
 * Elite MOBA Training - Style CSS Complet et Optimisé
 * Version avec chapitres, sans système de difficulté
 */

/* =========================================
   VARIABLES CSS
   ========================================= */

:root {
    /* Couleurs principales */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* EXTENSION PHASE 1B : Couleurs outils */
    --tool-primary: #ff9800;
    --tool-secondary: #f57c00;
    --tool-locked: #616161;
    --tool-available: #4caf50;
    --tool-completed: #2196f3;
    
    /* Couleurs de fond */
    --bg-dark: #0f0f23;
    --bg-darker: #0a0a1a;
    --darker: #1a1a2e;
    --dark: #16213e;
    
    /* Couleurs de texte */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    
    /* Effet verre */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Bordures */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.3);
}

/* =========================================
   RESET ET BASE
   ========================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* =========================================
   LOADER
   ========================================= */

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--glass-border);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* =========================================
   LAYOUT PRINCIPAL
   ========================================= */

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 95%;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    animation: fadeInDown 0.8s ease;
}

.header h1 {
    font-size: clamp(2.5rem, 5vw, 2rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    font-weight: 400;
    margin: 0;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
   STATISTIQUES
   ========================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.stat-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    backdrop-filter: blur(15px);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(103, 126, 234, 0.2);
    border-color: var(--primary);
}

.stat-value {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Barre de progression */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--darker);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 50%, var(--success) 100%);
    border-radius: var(--radius-sm);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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%); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}



/* =========================================
   CHAPITRES ET MODULES
   ========================================= */

.modules-container {
    margin-top: var(--spacing-xl);
}

.chapter-section {
    margin-bottom: var(--spacing-xxl);
    animation: fadeInUp 0.6s ease both;
}

/* En-tête de chapitre */
.chapter-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(15px);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.chapter-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.chapter-header:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(103, 126, 234, 0.15);
}

.chapter-icon {
    font-size: 2.5rem;
    margin-right: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

.chapter-info {
    flex: 1;
}

.chapter-info h3 {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chapter-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
    line-height: 1.5;
}

.chapter-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.chapter-progress {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.chapter-completion {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1rem;
    color: var(--success);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(34, 197, 94, 0.1);
    border-radius: var(--radius-sm);
}

/* Grille des modules */
.chapter-modules {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* Cartes modules */
.module-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    animation: slideUp 0.6s ease both;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.module-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(103, 126, 234, 0.3);
    border-color: var(--primary);
}

.module-card.completed {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, var(--glass-bg) 100%);
}

.module-card.completed::before {
    background: var(--success);
}

.module-card.current {
    border-color: var(--warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, var(--glass-bg) 100%);
}

.module-card.current::before {
    background: var(--warning);
}

.module-card.locked {
    opacity: 0.6;
    cursor: not-allowed;
    filter: grayscale(50%);
}

.module-card.locked:hover {
    transform: none;
    box-shadow: var(--glass-shadow);
}

@keyframes slideUp {
    from { 
        opacity: 0; 
        transform: translateY(30px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Contenu des cartes modules */
.module-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.module-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    flex: 1;
}

.module-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.module-status {
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* === STYLES ICÔNES OUTILS SUR CARTES MODULES === */

/* === CONTENEUR MODULE + OUTIL ENCAPSULÉ === */
.module-with-tool {
    display: inline-flex;
    align-items: center;
    gap: 0;
    white-space: nowrap;
}

/* === ICÔNE DANS CONTENEUR ENCAPSULÉ === */
.module-with-tool .toolbox-icon {
    font-size: 1.1rem;
    margin: 0;
    padding: 0;
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
    transition: all 0.3s ease;
    cursor: default;
}

/* === MODULE NUMBER DANS CONTENEUR ENCAPSULÉ === */
.module-with-tool .module-number {
    margin: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* === ÉTATS ICÔNE DANS CONTENEUR === */
.module-with-tool .toolbox-icon.locked {
    filter: grayscale(100%) opacity(0.4);
    cursor: not-allowed;
}

.module-with-tool .toolbox-icon.available {
    filter: none;
    cursor: pointer;
    animation: toolboxPulse 2s infinite;
}

.module-with-tool .toolbox-icon.available:hover {
    transform: scale(1.15);
}

.module-with-tool .toolbox-icon.completed {
    filter: none;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(255, 215, 0, 0.8);
    border-radius: 50%;
}

/* === LEGACY - STYLES ICÔNES BOÎTE À OUTILS === */
.toolbox-icon {
    font-size: 1.1rem;
    display: inline-block;
    margin-right: 4px;
    transition: all 0.3s ease;
    cursor: default;
    vertical-align: middle;
    line-height: 1;
}

/* État verrouillé - Grisé */
.toolbox-icon.locked {
    filter: grayscale(100%) opacity(0.4);
    cursor: not-allowed;
}

/* État disponible - Coloré normal */
.toolbox-icon.available {
    filter: none;
    cursor: pointer;
    animation: toolboxPulse 2s infinite;
}

.toolbox-icon.available:hover {
    transform: scale(1.15);
    filter: brightness(1.2);
}

/* État terminé - Coloré avec effet glow */
.toolbox-icon.completed {
    filter: none;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(255, 215, 0, 0.8);
    border-radius: 50%;
}

.toolbox-icon.completed:hover {
    transform: scale(1.15);
    filter: brightness(1.3);
}

/* Animation subtile pour outils disponibles */
@keyframes toolboxPulse {
    0%, 100% { 
        filter: none; 
    }
    50% { 
        filter: brightness(1.2);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .module-with-tool .toolbox-icon {
        font-size: 1rem;
    }
    
    .toolbox-icon {
        font-size: 1rem;
        margin-right: 6px;
    }
}

/* LEGACY - Maintenir compatibilité */
.tool-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.module-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.module-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.module-number {
    background: var(--primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    display: inline-block;
    vertical-align: middle;
    font-weight: 600;
    text-transform: uppercase;
}

/* =========================================
   VIEWER DE MODULE
   ========================================= */

.module-viewer {
    display: none;
    flex-direction: column;
    height: 100vh;
    background: var(--bg-dark);
}

.module-viewer .module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-back {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.9rem;
    font-weight: 500;
}

.btn-back:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateX(-2px);
}

#moduleTitle {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    text-align: center;
    flex: 1;
}

#timer {
    background: var(--glass-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    min-width: 80px;
    text-align: center;
}

/* Contenu du module */
.module-content {
    flex: 1;
    overflow-y: auto;
    background: var(--bg-darker);
    padding: var(--spacing-xl);
}

.module-content-inner {
    max-width: 900px;
    margin: 0 auto;
    background: var(--glass-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xxl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.loading-module {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.loading-module::after {
    content: "...";
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
    0%, 20% { content: "."; }
    40% { content: ".."; }
    60% { content: "..."; }
    80%, 100% { content: "...."; }
}

/* Footer du module */
.module-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    gap: var(--spacing-md);
}

.btn-nav-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 160px;
}

.btn-nav-section:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-1px);
}

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

.nav-icon {
    font-size: 0.8rem;
}

.section-info-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 1;
    text-align: center;
}

.section-counter {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.section-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
}

.progress-label {
    color: var(--text-muted);
}

.progress-value {
    color: var(--primary);
    font-weight: 600;
}

/* =========================================
   CONTENU DES MODULES
   ========================================= */

.content-section {
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.content-section h2 {
    color: var(--primary);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary);
}

.content-section h3 {
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.content-section p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.content-section ul, .content-section ol {
    color: var(--text-secondary);
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.content-section li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.highlight {
    background: linear-gradient(135deg, rgba(103, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-primary);
    font-weight: 500;
}

.solution-box {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.solution-box h3 {
    color: var(--success);
    margin-top: 0;
}

.next-module {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.next-module h3 {
    color: var(--warning);
    margin-top: 0;
}

/* =========================================
   ÉTATS D'ERREUR
   ========================================= */

.error {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    padding: var(--spacing-xl);
}

.error h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--danger);
}

.error p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-retry {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-retry:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* =========================================
   SCROLLBAR PERSONNALISÉE
   ========================================= */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--darker);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-dark), var(--secondary));
}

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
    
    .chapter-modules {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    #app {
        padding: var(--spacing-md);
    }
    
    .header h1 {
        font-size: 2.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .chapter-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
        padding: var(--spacing-lg);
    }
    
    .chapter-icon {
        font-size: 2rem;
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .chapter-stats {
        align-self: stretch;
        align-items: flex-start;
    }
    
    .chapter-modules {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .module-card {
        padding: var(--spacing-lg);
    }
    
    .module-content {
        padding: var(--spacing-md);
    }
    
    .module-content-inner {
        padding: var(--spacing-xl);
    }
    
    .module-viewer .module-header,
    .module-footer {
        padding: var(--spacing-md);
    }
    
    .module-footer {
        flex-wrap: wrap;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .btn-nav-section {
        min-width: 140px;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.85rem;
    }
    
    .section-info-wrapper {
        width: 100%;
        order: -1;
        margin-bottom: var(--spacing-sm);
    }
    
    .content-section {
        padding: var(--spacing-lg);
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
    
    #moduleTitle {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .chapter-header {
        padding: var(--spacing-md);
    }
    
    .chapter-info h3 {
        font-size: 1.3rem;
    }
    
    .module-card {
        padding: var(--spacing-md);
    }
    
    .module-header h3 {
        font-size: 1.1rem;
    }
    
    .module-content-inner {
        padding: var(--spacing-lg);
    }
    
    .content-section {
        padding: var(--spacing-md);
    }
    
    .content-section h2 {
        font-size: 1.3rem;
    }
    
    .notification {
        right: 10px;
        left: 10px;
        top: 10px;
        max-width: none;
        transform: translateY(-100px);
        opacity: 0;
    }
    
    .notification.show {
        transform: translateY(0);
        opacity: 1;
    }
}

/* =========================================
   ANIMATIONS ET PERFORMANCES
   ========================================= */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Optimisations GPU */
.module-card,
.chapter-header,
.stat-card {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Mode sombre forcé */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* =========================================
   PRINT STYLES
   ========================================= */

@media print {
    * {
        background: white !important;
        color: black !important;
    }
    
    .module-viewer .module-header,
    .module-footer,
    .btn-back,
    .btn-nav-section {
        display: none !important;
    }
}

/* =========================================
   EXTENSION PHASE 1B : STYLES OUTILS
   ========================================= */

/* Section outils dans chapitre */
.chapter-tools {
    margin-top: var(--spacing-lg);
}

.tools-header {
    margin-bottom: var(--spacing-md);
}

.tools-header h4 {
    color: var(--tool-primary);
    font-size: 1.2rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chapter-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* Carte outil */
.tool-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
    backdrop-filter: blur(20px);
    box-shadow: var(--glass-shadow);
    
    /* Différencier des modules avec bordure orange */
    border-left: 4px solid var(--tool-primary);
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-2px);
    border-color: var(--tool-primary);
    box-shadow: 0 12px 40px rgba(255, 152, 0, 0.3);
}

.tool-card.locked {
    opacity: 0.5;
    pointer-events: none;
    border-left-color: var(--tool-locked);
}

.tool-card.locked:hover {
    transform: none;
    box-shadow: var(--glass-shadow);
}

.tool-card.completed {
    background: linear-gradient(135deg, var(--tool-completed), var(--tool-available));
    border-left-color: var(--tool-completed);
}

.tool-card.current {
    border-left-color: var(--tool-available);
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.3);
}

/* Header outil */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.tool-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
    flex: 1;
}

.tool-status {
    font-size: 1.5rem;
    margin-left: var(--spacing-sm);
}

/* Description outil */
.tool-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

/* Métadonnées outil */
.tool-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 0.8rem;
}

.tool-type {
    color: var(--tool-primary);
    font-weight: 600;
}

.tool-requirement {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Statut outil */
.tool-status-text {
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
}

.tool-card.locked .tool-status-text {
    color: var(--tool-locked);
    background: rgba(97, 97, 97, 0.2);
}

.tool-card.available .tool-status-text {
    color: var(--tool-available);
    background: rgba(76, 175, 80, 0.2);
}

.tool-card.completed .tool-status-text {
    color: var(--tool-completed);
    background: rgba(33, 150, 243, 0.2);
}

/* Responsive outils */
@media (max-width: 768px) {
    .chapter-tools-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .tool-card {
        padding: var(--spacing-md);
    }
    
    .tool-header h3 {
        font-size: 1.1rem;
    }
    
    .tool-description {
        font-size: 0.85rem;
    }
}

/* =========================================
   STYLES SPÉCIFIQUES INTERFACE OUTILS
   ========================================= */

/* OVERRIDE FORCÉ - SUPPRIMER CONTRAINTES LARGEUR */
body.tool-active {
    overflow-x: hidden !important;
}

.tool-mode .container,
.tool-mode .main-container,
.tool-mode .content-wrapper {
    max-width: none !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* Container module-viewer pleine largeur en mode outil */
.tool-mode#moduleViewer {
    width: 100vw !important;
    max-width: 100vw !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* Mode outil - PLEINE LARGEUR 100% */
.tool-mode {
    /* Pleine largeur viewport */
    width: 100vw !important;
    max-width: 100vw !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow-x: hidden;
    position: relative;
}

/* Contenu outil - PLEINE LARGEUR */
.tool-content {
    width: 100% !important;
    max-width: 100% !important;
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    padding: var(--spacing-md);
    margin: 0 !important;
    box-sizing: border-box;
}

/* Masquer éléments inutiles en mode outil */
.tool-mode .timer,
.tool-mode .module-footer,
.tool-mode .navigation-footer,
.tool-mode .section-navigation,
.tool-mode .read-progress {
    display: none !important;
}

/* Adapter header en mode outil - CHARTE MODULES */
.tool-mode .module-header {
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-lg);
    backdrop-filter: blur(10px);
    border-radius: 0;
    box-shadow: var(--shadow-sm);
}

/* Adapter titre en mode outil - CHARTE MODULES */
.tool-mode .module-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

/* Layout spécifique outils - PLEINE LARGEUR */
.tool-mode .module-content {
    background: var(--bg-darker);
    width: 100% !important;
    max-width: 100% !important;
    height: calc(100vh - 80px);
    max-height: calc(100vh - 80px);
    overflow: hidden;
    padding: 0 !important;
    margin: 0 !important;
    border-radius: 0;
    box-sizing: border-box;
}

/* Responsive pour outils - CHARTE MODULES */
@media (max-width: 768px) {
    .tool-content {
        padding: var(--spacing-sm);
    }
    
    .tool-mode .module-header {
        padding: var(--spacing-md);
    }
}

/* =========================================
   STYLES SPÉCIFIQUES C1T1 LAYOUT
   ========================================= */

/* Layout grille optimisé - PLEINE LARGEUR */
.tool-grid-layout {
    display: grid;
    grid-template-columns: 300px 1fr 280px;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
    height: calc(100vh - 120px);
    max-height: calc(100vh - 120px);
    overflow: hidden;
    padding: 1rem;
    margin: 0;
    box-sizing: border-box;
}

/* Responsive layout - PLEINE LARGEUR */
@media (max-width: 1400px) {
    .tool-grid-layout {
        grid-template-columns: 280px 1fr 250px;
        gap: 1rem;
    }
}

@media (max-width: 1200px) {
    .tool-grid-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
        gap: 1rem;
        height: calc(100vh - 120px);
        width: 100%;
    }
    
    .sidebar-panel, .planning-panel {
        order: 2;
        height: auto;
        max-height: 200px;
    }
    
    .main-timeline {
        order: 1;
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    .tool-mode .module-content {
        height: calc(100vh - 100px);
        width: 100vw !important;
    }
    
    .tool-grid-layout {
        padding: 0.5rem;
        gap: 0.5rem;
        height: calc(100vh - 100px);
        width: calc(100vw - 1rem);
    }
    
    .sidebar-panel, .planning-panel, .main-timeline {
        border-radius: var(--radius-md);
        padding: var(--spacing-md);
    }
}

/* Panels optimisés - LARGEUR ADAPTATIVE */
.sidebar-panel, .planning-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
    max-height: 100%;
    min-width: 250px;
    max-width: 320px;
}

.main-timeline {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
    max-height: 100%;
    min-width: 0; /* Important pour flexibilité */
}

/* =========================================
   ÉLÉMENTS OUTILS - CHARTE MODULES
   ========================================= */

/* Timeline steps - même style que progression modules */
.timeline-step {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
    cursor: pointer;
}

.timeline-step:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.timeline-step.completed {
    border-left: 4px solid var(--success);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, var(--glass-bg) 100%);
}

.timeline-step.current {
    border-left: 4px solid var(--warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, var(--glass-bg) 100%);
}

.timeline-step.todo {
    border-left: 4px solid var(--glass-border);
}

/* Panel headers */
.panel-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

/* Boutons outils - même style que modules */
.tool-mode .btn,
.timeline-step .btn {
    background: var(--primary);
    color: var(--text-primary);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-normal);
    text-decoration: none;
    display: inline-block;
}

.tool-mode .btn:hover,
.timeline-step .btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.tool-mode .btn-success {
    background: var(--success);
}

.tool-mode .btn-warning {
    background: var(--warning);
}

.tool-mode .btn-danger {
    background: var(--danger);
}

/* Filter tabs */
.filter-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.tab-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--primary);
    color: var(--text-primary);
    border-color: var(--primary);
}

/* Content sections */
.step-content {
    flex: 1;
}

.step-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.step-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

/* =========================================
   TIMELINE OPTIMISÉE PLEINE LARGEUR
   ========================================= */

.timeline-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

.timeline-step {
    width: 100%;
    padding: 1rem;
    margin: 0.75rem 0;
    border-radius: var(--radius-md);
    box-sizing: border-box;
    transition: var(--transition-normal);
    cursor: pointer;
}

.timeline-step:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

/* Responsive timeline */
@media (max-width: 1200px) {
    .timeline-step {
        padding: 0.75rem;
        margin: 0.5rem 0;
    }
}

@media (max-width: 768px) {
    .timeline-step {
        padding: 0.5rem;
        margin: 0.25rem 0;
    }
    
    .step-title {
        font-size: 0.9rem;
    }
    
    .step-meta {
        font-size: 0.75rem;
    }
}