/**
 * MAIN.CSS
 * Styles globaux et variables CSS pour l'application Gestionnaire de Classes
 */

/* ==================== VARIABLES CSS ==================== */
:root {
    /* Couleurs principales */
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    
    /* Couleurs de statut */
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    
    /* Couleurs de texte */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #95a5a6;
    
    /* Couleurs de fond */
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gradient: #b8cce6;
    
    /* Bordures */
    --border-color: #e0e0e0;
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --border-radius-xl: 12px;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.2);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.3);
    
    /* Espacements */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 40px;
    
    /* Transitions */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* ==================== CONTENU PRINCIPAL ==================== */
.main-content {
    padding: var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
}

/* ==================== UTILITAIRES ==================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary-color);
}

.text-secondary {
    color: var(--text-secondary);
}

/* ==================== CONTENEURS ==================== */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ==================== STATUT DE CONNEXION ==================== */
.connection-status {
    position: fixed;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: bold;
    z-index: 9999;
    transition: opacity var(--transition-normal);
}

.connection-status.connected {
    background: var(--success-color);
    color: white;
}

.connection-status.error {
    background: var(--error-color);
    color: white;
}

/* ==================== BOUTONS ==================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-logout {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    margin-top: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.btn-logout:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

/* ==================== FORMULAIRES ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ==================== ALERTES ==================== */
.alert {
    padding: 12px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    font-size: 14px;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

.alert-info {
    background: #e3f2fd;
    color: #1976d2;
    border: 1px solid #bbdefb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* ==================== LOADER ==================== */
.loader {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* ==================== PAGE EN TRAVAUX ==================== */
.work-in-progress {
    background: white;
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xxl);
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
    text-align: left;
}

.content-center {
    text-align: center;
}

.icon-large {
    font-size: 80px;
    margin-bottom: var(--spacing-lg);
}

.work-in-progress h1 {
    color: var(--primary-color);
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: var(--spacing-xl);
}

.session-info {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.session-info p {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.user-email {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .work-in-progress {
        padding: var(--spacing-lg);
    }
    
    .work-in-progress h1 {
        font-size: 32px;
    }
    
    .icon-large {
        font-size: 60px;
    }
}