/* Variables CSS */
:root {
    --primary-color: #87CEEB; /* Bleu ciel */
    --secondary-color: #4682B4; /* Bleu acier */
    --white: #FFFFFF;
    --black: #000000;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --gray-dark: #343a40;
}

/* Styles généraux */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

/* Sections */
.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--black);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

/* Cartes de service */
.service-card {
    background: var(--white);
    border-radius: 10px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.1);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.service-icon {
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

/* Cartes d'articles */
.article-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 10px;
}

.article-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.article-card .card-body {
    display: flex;
    flex-direction: column;
}

.article-meta {
    margin-top: auto;
    padding-top: 1rem;
}

/* Statistiques */
.stats-section {
    background-color: var(--gray-light);
}

.stat-item h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* Navigation */
.navbar-brand {
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color);
}

.navbar-nav .nav-link.active {
    color: var(--primary-color);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

/* Boutons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--black);
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 500;
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--black);
}

/* Footer */
footer {
    background-color: var(--black) !important;
}

footer a {
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-color) !important;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section .display-4 {
        font-size: 2rem;
    }
    
    .stat-item h3 {
        font-size: 2rem;
    }
    
    .service-card, .article-card {
        margin-bottom: 1rem;
    }
}

/* Utilitaires */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Alertes personnalisées */
.alert-custom {
    border: none;
    border-radius: 10px;
    padding: 1rem 1.5rem;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-error {
    background-color: rgba(220, 53, 69, 0.1);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

.pdf-reader-container {
    position: relative;
    width: 100%;
    height: 600px;
    background: #f8f9fa;
}

.pdf-reader {
    width: 100%;
    height: 100%;
    border: none;
}