/* ==============================================
   VARIABLES CSS POUR LES THÈMES
   ============================================== */

:root {
    /* Couleurs du thème clair */
    --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-secondary: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.15);
    --text-primary: #333;
    --text-secondary: #666;
    --text-inverse: #fff;
    --shadow: rgba(0, 0, 0, 0.2);
    --border: rgba(255, 255, 255, 0.3);
    --accent: #007BFF;
    --accent-hover: #0056b3;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    
    /* Gradients */
    --gradient-1: linear-gradient(270deg, #ff7e5f, #feb47b, #86a8e7, #91eae4);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-3: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 100%);
}

[data-theme="dark"] {
    /* Couleurs du thème sombre */
    --bg-primary: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --bg-secondary: rgba(30, 30, 46, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-inverse: #1a1a2e;
    --shadow: rgba(0, 0, 0, 0.5);
    --border: rgba(255, 255, 255, 0.1);
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    
    /* Gradients sombres */
    --gradient-1: linear-gradient(270deg, #0f2027, #203a43, #2c5364);
    --gradient-2: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-3: linear-gradient(120deg, #1e3c72 0%, #2a5298 100%);
}

/* ==============================================
   ANIMATIONS GLOBALES
   ============================================== */

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

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==============================================
   CLASSES UTILITAIRES GLASSMORPHISM
   ============================================== */

.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    box-shadow: 0 8px 32px 0 var(--shadow);
}

.glass-strong {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

[data-theme="dark"] .glass-strong {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ==============================================
   TOGGLE THEME BUTTON
   ============================================== */

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px var(--shadow);
}

.theme-toggle-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-toggle-icon {
    transform: rotate(20deg);
}

/* ==============================================
   CARDS ET CONTAINERS
   ============================================== */

.card {
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 32px var(--shadow);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow);
}

/* ==============================================
   BOUTONS STYLISÉS
   ============================================== */

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

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

@media (max-width: 768px) {
    .theme-toggle {
        top: 10px;
        right: 10px;
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .theme-toggle-icon {
        font-size: 18px;
    }
}