:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --success-color: #4cc9f0;
    --danger-color: #f72585;
    --warning-color: #f8961e;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --border-radius: 10px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

h2 i {
    margin-right: 10px;
}

.session-info {
    background: var(--light-color);
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.form-group {
    flex: 1;
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: var(--dark-color);
    font-weight: 500;
}

input, select, textarea {
    width: 100%;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

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

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

.table-container {
    overflow-x: auto;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background: var(--light-color);
    color: var(--dark-color);
    font-weight: 600;
}

tr:hover {
    background: #f8f9fa;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending {
    background: #fff3cd;
    color: #856404;
}

.status-approved {
    background: #d4edda;
    color: #155724;
}

.status-rejected {
    background: #f8d7da;
    color: #721c24;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.dashboard-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.dashboard-card:hover {
    transform: translateY(-5px);
}

.dashboard-card i {
    font-size: 40px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.dashboard-card h3 {
    font-size: 24px;
    margin: 10px 0;
    color: var(--dark-color);
}

.qr-code-container {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: var(--border-radius);
    margin: 20px 0;
}

#qrcode {
    margin: 20px auto;
    max-width: 200px;
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .container {
        padding: 10px;
    }
    
    .card {
        padding: 20px;
    }
}

/* Styles additionnels pour les nouvelles pages */

/* Onglets */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--light-color);
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 15px 25px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--gray-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    color: var(--primary-color);
    background: var(--light-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: rgba(67, 97, 238, 0.05);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cartes de session */
.session-header-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.session-header-info h1 {
    color: white;
    margin-bottom: 10px;
}

.session-number {
    font-size: 18px;
    opacity: 0.9;
}

/* Grille d'information */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.info-item {
    background: var(--light-color);
    padding: 20px;
    border-radius: var(--border-radius);
}

.info-item label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: block;
}

.info-item p {
    color: var(--dark-color);
    margin: 0;
}

/* Modules */
.modules-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.module-item {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    padding: 20px;
    transition: var(--transition);
}

.module-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.module-header h4 {
    color: var(--primary-color);
    margin: 0;
}

.module-actions {
    display: flex;
    gap: 5px;
}

.module-details p {
    margin: 10px 0;
    color: var(--dark-color);
}

/* Statistiques participants */
.participants-stats {
    display: flex;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.stat-item {
    flex: 1;
    min-width: 150px;
    text-align: center;
    padding: 20px;
    background: var(--light-color);
    border-radius: var(--border-radius);
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-number.pending {
    color: #f8961e;
}

.stat-number.approved {
    color: #4cc9f0;
}

.stat-number.rejected {
    color: #f72585;
}

.stat-label {
    color: var(--gray-color);
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
}

/* QR Code */
.qr-card {
    text-align: center;
}

.qr-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 30px;
}

.qr-info {
    max-width: 500px;
}

.qr-url {
    background: var(--light-color);
    padding: 10px;
    border-radius: 5px;
    word-break: break-all;
    margin: 10px 0;
}

/* Calendrier */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.calendar-day {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.day-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.day-header h4 {
    color: white;
    margin: 0;
    font-size: 16px;
}

.day-content {
    padding: 20px;
}

.day-content p {
    margin: 10px 0;
    color: var(--dark-color);
}

/* Toggle de vue */
.calendar-view-toggle {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.view-btn {
    padding: 10px 20px;
    background: var(--light-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.view-btn:hover {
    background: #e0e0e0;
}

.view-btn.active {
    background: var(--primary-color);
    color: white;
}

.view-content {
    display: none;
}

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

/* Alertes */
.alert {
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.alert-warning {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    color: #856404;
}

.alert i {
    font-size: 24px;
}

.alert h3 {
    margin: 0 0 5px 0;
}

.alert p {
    margin: 0;
}

/* Section header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* Boutons d'action */
.action-buttons {
    display: flex;
    gap: 5px;
}

/* État vide */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-color);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-color);
}

/* Responsive */
@media (max-width: 768px) {
    .session-header-card {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        justify-content: center;
        border-bottom: none;
        border-left: 3px solid transparent;
    }
    
    .tab-btn.active {
        border-left-color: var(--primary-color);
        border-bottom-color: transparent;
    }
    
    .participants-stats {
        flex-direction: column;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}