:root {
    --primary-color: #3498db;
    --primary-color-rgb: 52, 152, 219;
    --secondary-color: #2ecc71;
    --accent-color: #f39c12; /* Définition de l'accent-color pour le bouton BAC3 */
    --warning-color: #e74c3c;
    --warning-color-light: rgba(231, 76, 60, 0.1);
    --info-color: #3498db;
    --info-color-rgb: 52, 152, 219;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #333333;
    --text-color-secondary: #555555;
    --border-color: #e0e0e0;
    --highlight-background: rgba(52, 152, 219, 0.1);
    --feature-background: rgba(52, 152, 219, 0.08);
    --feature-border: #3498db;
    --settings-background: rgba(52, 152, 219, 0.1);
    --settings-border: #3498db;
    --success-color: #4CAF50; /* Vert pour les succès */
    --error-color: #E57373; /* Rouge adouci pour les erreurs */
    --text-light: #ffffff;
    --text-dark: #333333;
    --background-light: #f5f7fa; /* Fond très clair */
    --border-radius: 10px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;

    /* Variables pour le thème sombre */
    --dark-bg: #1f2937;
    --dark-container: #374151;
    --dark-text: #f3f4f6;
}

body {
    background-color: var(--background-light);
    background-image: linear-gradient(135deg, #f5f7fa 0%, #e0e6ed 100%);
    color: var(--text-dark);
    font-family: 'Montserrat', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 20px;
    opacity: 0;
    animation: fadeIn 1s ease-in-out forwards;
}

body.dark-theme {
    background-color: #121212;
    background-image: linear-gradient(135deg, #121212 0%, #1e2329 100%);
    color: #e2e8f0;
}

body.dark-theme .app-container {
    background-color: #1f2937;
    color: #e2e8f0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

body.dark-theme header {
    background-color: #0f172a;
    border-bottom: 1px solid #2d3748;
}

body.dark-theme footer {
    background-color: #0f172a;
    color: #94a3b8;
    border-top: 1px solid #2d3748;
}

/* Correction spécifique pour les descriptions des modes */
body.dark-theme .mode-descriptions {
    background-color: #273445;
    color: #e2e8f0;
    border-left: 3px solid #3b82f6;
}

body.dark-theme .mode-item p {
    color: #cbd5e1;
}

/* Autres ajustements pour le thème sombre */
body.dark-theme .highlight {
    background-color: rgba(245, 166, 35, 0.15);
    color: #f8b86c;
}

body.dark-theme .warning {
    background-color: rgba(229, 115, 115, 0.15);
    color: #f87171;
}

body.dark-theme .settings-container {
    border-color: #4b5563;
    background-color: #273445;
}

body.dark-theme .score-display {
    background-color: rgba(76, 175, 80, 0.15);
    color: #6ee7b7;
}

body.dark-theme input.form-control {
    background-color: #374151;
    color: #e2e8f0;
    border-color: #4b5563;
}

body.dark-theme input.form-control::placeholder {
    color: #9ca3af;
}

/* Amélioration du contraste pour les boutons en mode sombre */
body.dark-theme .btn-primary {
    background-color: #2563eb;
}

body.dark-theme .btn-info {
    background-color: #0284c7;
    color: white;
}

body.dark-theme .btn-secondary {
    background-color: #4b5563;
}

body.dark-theme .btn-success {
    background-color: #059669;
}

body.dark-theme .btn-warning {
    background-color: #d97706;
}

body.dark-theme .btn-danger {
    background-color: #dc2626;
}

body.dark-theme .btn {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

/* Style pour la barre de progression en mode sombre */
body.dark-theme .progress {
    background-color: #374151;
}

body.dark-theme .progress-bar {
    background-color: #3b82f6;
}

.app-container {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 800px;
    overflow: hidden;
    position: relative;
}

header {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 20px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 600;
}

main {
    padding: 30px;
}

footer {
    text-align: center;
    padding: 15px;
    background-color: #f8f9fa;
    border-top: 1px solid #eee;
    font-size: 0.9rem;
    color: #666;
}

.frameDiv {
    background-color: var(--text-light);
    color: var(--primary-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    max-width: 600px;
    width: 90%;
    margin: 20px;
    transition: var(--transition);
}

.frameDiv:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transform: translateY(-5px);
}

h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

h1::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

.section-title {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

body.dark-theme .section-title {
    color: #e2e8f0;
}

body.dark-theme .section-title::after {
    background-color: #3b82f6;
}

p {
    font-size: 1rem;
    line-height: 1.6;
}

.warning {
    font-weight: bold;
    color: var(--error-color);
    padding: 15px;
    border-radius: 8px;
    background-color: rgba(229, 115, 115, 0.1);
    margin: 15px 0;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1rem;
    color: var(--text-light);
    background-color: var(--primary-light);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

button:hover::after {
    left: 100%;
}

copyright {
    position: fixed;
    bottom: 10px;
    right: 10px;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    border: 2px solid var(--text-light);
    border-radius: 15px;
    font-size: 14px;
    box-shadow: var(--shadow);
    z-index: 1000;
    text-align: center;
    transition: var(--transition);
}

copyright:hover {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    background-color: var(--text-light);
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.btn-bac3, .btn-master1 {
    color: white;
    border: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-bac3 {
    background-color: var(--accent-color);
    color: white; /* Assurer que le texte est visible */
}

.btn-master1 {
    background-color: var(--primary-color);
}

.btn-bac3:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    color: white;
    background-color: #e09400; /* Version plus foncée de l'orange doré */
}

.btn-master1:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    color: white;
    background-color: #255c85; /* Version plus foncée du bleu */
}

body.dark-theme .btn-bac3:hover {
    background-color: #f39c12;
}

body.dark-theme .btn-master1:hover {
    background-color: #3498db;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

/* Style amélioré pour les boutons de mode de jeu */
.btn-group-modes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-top: 20px;
}

.btn-group-modes .btn {
    flex: 0 0 auto;
    min-width: 140px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-group-modes .btn i {
    margin-right: 8px;
    font-size: 1rem;
}

/* Animation du fade-in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Styles des vues */
.app-view {
    display: none;
    animation: fadeIn 0.5s;
}

.app-view.active {
    display: block;
}

/* Styles communs */
.highlight {
    background-color: rgba(245, 166, 35, 0.1);
    color: var(--accent-color);
    padding: 10px 15px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    margin: 15px 0;
}

.welcome-screen, .game-mode-screen, .settings-screen, 
.frame-question-screen, .frame-answer-screen, .end-game-screen {
    text-align: center;
}

.mode-descriptions {
    text-align: left;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    max-width: 100%;
    overflow-x: hidden;
}

.mode-item {
    margin-bottom: 15px;
}

.mode-item p {
    margin: 5px 0 0 20px;
    font-size: 0.95rem;
}

.settings-container {
    text-align: left;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
}

.score-display {
    background-color: rgba(76, 175, 80, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
}

/* Media queries pour la responsivité */
@media (max-width: 768px) {
    .app-container {
        margin: 10px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    main {
        padding: 20px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.3rem;
    }
    
    .btn-bac3, .btn-master1 {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    copyright {
        bottom: 5px;
        right: 5px;
        padding: 8px 12px;
        font-size: 12px;
    }
}

/* Ajustements pour les petits écrans */
@media (max-width: 576px) {
    .btn-group-modes .btn {
        flex: 1 0 calc(50% - 10px);
        font-size: 0.9rem;
        padding: 8px 12px;
    }
    
    .mode-descriptions {
        padding: 10px;
    }
    
    .mode-item p {
        font-size: 0.85rem;
        margin-left: 10px;
    }
}

/* Pour assurer que le contenu reste dans la zone visible */
.game-mode-screen {
    max-width: 100%;
    overflow-x: hidden;
}

.theme-switch {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
}

/* Switch de thème plus élégant */
.theme-switch-wrapper {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 100;
    transition: all 0.3s ease;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
    margin: 0;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    overflow: hidden;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
    z-index: 2;
}

.slider .fa-sun {
    color: #f39c12;
    font-size: 16px;
    margin-right: 4px;
}

.slider .fa-moon {
    color: #3498db;
    font-size: 14px;
    margin-left: 8px;
}

input:checked + .slider {
    background-color: #2c3e50;
}

input:checked + .slider:before {
    transform: translateX(30px);
}

.round {
    border-radius: 34px;
}

/* Ajustements pour le mode sombre */
body.dark-theme .slider:before {
    background-color: #34495e;
}

/* Responsive */
@media (max-width: 768px) {
    .theme-switch {
        width: 50px;
        height: 26px;
    }
    
    .slider:before {
        height: 18px;
        width: 18px;
    }
    
    .slider .fa-sun,
    .slider .fa-moon {
        font-size: 12px;
    }
    
    input:checked + .slider:before {
        transform: translateX(24px);
    }
}

/* Animations des icônes */
.theme-switch input:not(:checked) + .slider .moon {
    opacity: 0.3;
}

.theme-switch input:checked + .slider .sun {
    opacity: 0.3;
}

/* Style pour le mode sombre */
body.dark-theme .slider {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Adaptation responsive */
@media (max-width: 768px) {
    .theme-switch-wrapper {
        top: 15px;
        right: 15px;
    }
    
    .theme-switch {
        width: 52px;
        height: 26px;
    }
    
    .ball {
        height: 18px;
        width: 18px;
    }
    
    .theme-switch input:checked + .slider .ball {
        transform: translateX(26px);
    }
    
    .sun, .moon {
        width: 14px;
        height: 14px;
    }
}

/* Stylisation du switch thème sombre/clair */
.theme-switch-wrapper {
    position: absolute;
    top: 15px;
    right: 20px;
    display: flex;
    align-items: center;
    z-index: 100;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 26px;
    margin: 0;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    z-index: 2;
}

input:checked + .slider {
    background-color: #2c3e50;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2c3e50;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.sun-icon, .moon-icon {
    color: white;
    font-size: 12px;
    transition: opacity 0.3s ease;
}

.sun-icon {
    margin-right: 8px;
}

.moon-icon {
    margin-left: 8px;
    opacity: 0.6;
}

input:checked + .slider .sun-icon {
    opacity: 0.6;
}

input:checked + .slider .moon-icon {
    opacity: 1;
}

/* Adaptations pour le mode sombre */
body.dark-theme .slider:before {
    background-color: #384a5e;
}

/* Adaptation pour les petits écrans */
@media (max-width: 768px) {
    .theme-switch-wrapper {
        top: 12px;
        right: 15px;
    }
    
    .theme-switch {
        width: 46px;
        height: 23px;
    }
    
    .slider:before {
        height: 17px;
        width: 17px;
    }
    
    .sun-icon, .moon-icon {
        font-size: 10px;
    }
    
    input:checked + .slider:before {
        transform: translateX(23px);
    }
}

/* Style pour le mode étude */
.study-info {
    background-color: rgba(75, 192, 192, 0.15) !important;
    color: #2a8d8d !important;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 8px;
    margin: 15px 0;
    border-left: 4px solid #2a8d8d;
}

.study-mode .section-title::after {
    background-color: #2a8d8d;
}

body.dark-theme .study-info {
    background-color: rgba(56, 189, 248, 0.15) !important;
    color: #7dd3fc !important;
    border-left: 4px solid #0ea5e9;
}

body.dark-theme .study-mode .section-title::after {
    background-color: #0ea5e9;
}

/* Ajouter le style pour l'info Quizlet */
.info-quizlet {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
}

body.dark-theme .info-quizlet {
    background-color: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

/* Arbre de paramètres en mode sombre */
body.dark-theme .tree-checkbox-item {
    color: #e2e8f0;
}

body.dark-theme .tree-checkbox-box {
    border-color: #4b5563;
    background-color: #374151;
}

body.dark-theme .tree-checkbox-box.checked {
    background-color: #3b82f6;
    border-color: #2563eb;
}

/* Bouton de suggestion flottant */
.suggestion-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
}

.suggestion-button:hover {
    transform: translateY(-3px);
    background-color: #2980b9;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

/* Animation de pulse pour attirer l'attention */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.suggestion-button:active {
    transform: scale(0.95);
}

/* Adaptation pour le mode sombre */
body.dark-theme .suggestion-button {
    background-color: #3b82f6;
}

body.dark-theme .suggestion-button:hover {
    background-color: #2563eb;
}

/* Version responsive */
@media (max-width: 768px) {
    .suggestion-button {
        width: 45px;
        height: 45px;
        font-size: 1rem;
        bottom: 15px;
        right: 15px;
    }
}

.settings-info {
    max-width: 80%;
    margin: 0 auto;
    padding: 8px 15px;
    background-color: rgba(var(--info-color-rgb), 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--info-color);
}

.small-text {
    font-size: 0.9rem;
    color: var(--text-color-secondary);
    margin-bottom: 0;
}

body.dark-theme .settings-info {
    background-color: rgba(59, 130, 246, 0.15);
    border-left-color: #3b82f6;
}

body.dark-theme .small-text {
    color: #cbd5e1; /* Couleur plus claire pour le texte secondaire en mode sombre */
}

/* Amélioration du contraste de l'icône info-circle en mode sombre */
body.dark-theme .small-text .fa-info-circle {
    color: #60a5fa; /* Bleu plus vif pour l'icône en mode sombre */
}

.features-highlight {
    background-color: rgba(var(--primary-color-rgb), 0.08);
    border-radius: 12px;
    padding: 15px 20px;
    margin-top: 20px;
    border-left: 4px solid var(--primary-color);
}

.feature-list {
    text-align: left;
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 0;
}

.feature-list li {
    padding: 6px 0;
    display: flex;
    align-items: flex-start;
}

.feature-list li i {
    margin-right: 10px;
    margin-top: 3px;
    font-size: 0.9rem;
}

body.dark-theme .features-highlight {
    background-color: rgba(59, 130, 246, 0.12);
    border-left-color: #3b82f6;
}

.feature-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.feature-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 3px;
}

body.dark-theme .feature-title {
    color: #e2e8f0; /* Couleur claire pour le texte en mode sombre */
}

.feature-list li {
    padding: 6px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.feature-list li i {
    margin-top: 3px;
    font-size: 0.9rem;
}

/* Mode sombre - ajustement des variables uniquement */
body.dark-theme {
    --feature-background: rgba(59, 130, 246, 0.12);
    --feature-border: #3b82f6;
    --settings-background: rgba(59, 130, 246, 0.15);
    --settings-border: #3b82f6;
}

/* Styles pour les conteneurs d'informations */
.features-highlight {
    background-color: var(--feature-background);
    border-radius: 12px;
    padding: 15px 20px;
    margin-top: 20px;
    border-left: 4px solid var(--feature-border);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.settings-info {
    background-color: var(--settings-background);
    border-radius: 8px;
    padding: 8px 15px;
    border-left: 4px solid var(--settings-border);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

/* Mise à jour des styles pour les listes de fonctionnalités */
.feature-list {
    text-align: left;
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 0;
}

.feature-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.feature-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 3px;
}

.feature-list li {
    padding: 6px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.feature-list li i {
    margin-top: 3px;
    font-size: 0.9rem;
}

/* Assurer que le bouton BAC3 a un contenu visible */
.btn-bac3:empty::after {
    content: "BAC 3";
    font-family: 'Montserrat', sans-serif;
}

/* Ajouter l'icône au bouton s'il est vide */
.btn-bac3:empty::before {
    content: "\f19d"; /* Code Unicode pour l'icône graduation-cap */
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    margin-right: 8px;
}