/* =============================================================================
   CSS PRINCIPAL - FACULTÉ DES SCIENCES
   ============================================================================= */

/* Variables CSS */
:root {
    --primary-color: #7C3AED;
    --secondary-color: #A855F7;
    --accent-color: #C084FC;
    --dark-purple: #5B21B6;
    --light-purple: #EDE9FE;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.5s ease;
}

/* Reset et Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*:before,
*:after {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    font-size: 16px;
    font-weight: 400;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

/* Layout */
.container {
    margin: 0 auto;
    padding: 0 0rem;
    width: 100%;
}

.container-xl {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header Top */
.header-top {
    background: var(--dark-purple);
    color: white;
    padding: 0.5rem 0;
    font-size: 0.875rem;
    position: relative;
    z-index: 1000;
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.contact-info {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.contact-info i {
    font-size: 0.875rem;
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    color: white;
    font-size: 1.1rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

/* Masquer le bouton close en mode desktop */
.nav-close {
    display: none;
}


.social-links a:hover {
    background: var(--accent-color);
    transform: scale(1.1);
    color: white;
}

/* Main Header */
.main-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-shrink: 0;
}

.logo-container {
        display: flex;
        gap: 20px; /* espace entre les logos */
        align-items: center;
        justify-content: center;
    }



.logo {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-color);
    font-weight: bold;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    line-height: 1.2;
    color: white;
}

.logo-text p {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 400;
    margin-bottom: 0;
}

.quick-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

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

.btn:hover:before {
    left: 100%;
}

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

.btn-primary:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-color);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    box-shadow: var(--shadow);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Navigation */
.navigation {
    background: white;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 999;
}

.nav-menu {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 1.25rem 1.5rem;
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    font-size: 0.9rem;
    position: relative;
}

.nav-link:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.nav-link:hover:before,
.nav-link.active:before {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: var(--light-purple);
}

/* Breadcrumb */
.breadcrumb-section {
    background: var(--gray-50);
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.875rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item:before {
    content: '/';
    margin: 0 0.5rem;
    color: var(--gray-400);
}

.breadcrumb-item a {
    color: var(--gray-600);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--gray-800);
    font-weight: 500;
}

/* Alerts */
.alert {
    padding: 1rem 0;
    margin-bottom: 0;
    font-size: 0.875rem;
    position: relative;
    animation: slideDown 0.3s ease-out;
}

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

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

.alert-warning {
    background: var(--warning);
    color: white;
}

.alert-info {
    background: var(--info);
    color: white;
}

.alert .container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 400px);
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--gray-900);
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
    line-height: 1.6;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header: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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-header-content {
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.page-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero: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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.stat-item {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
    color: white;
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover:before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-900);
    line-height: 1.3;
}

.card p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.card-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    font-size: 0.9rem;
}

.card-link:hover {
    color: var(--secondary-color);
    gap: 1rem;
}

.card-link i {
    transition: var(--transition);
}

/* News Cards */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.news-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.news-title a:hover {
    color: var(--primary-color);
}

.news-excerpt {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
    font-size: 0.875rem;
}

.news-category {
    background: var(--light-purple);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.8rem;
}

.news-read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.news-read-more:hover {
    gap: 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.form-label.required:after {
    content: ' *';
    color: var(--error);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: 10px;
    font-size: 0.9rem;
    transition: var(--transition);
    background: white;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-control.is-invalid {
    border-color: var(--error);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.form-error {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.form-help {
    color: var(--gray-500);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 0.9rem;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    list-style: none;
}

.pagination .page-item {
    display: flex;
}

.pagination .page-link {
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
}

.pagination .page-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination .page-item.active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination .page-item.disabled .page-link {
    color: var(--gray-400);
    pointer-events: none;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 2rem 0 1rem;
    margin-top: 4rem;
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    position: relative;
}

.footer-section h4:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
    padding-left: 0.5rem;
}

.footer-section ul li i {
    width: 16px;
    color: var(--gray-400);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-400);
    font-size: 0.9rem;
}

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.pulse {
    animation: pulse 2s infinite;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }
.font-light { font-weight: 300; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }

.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-gray-100 { background-color: var(--gray-100); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.p-0 { padding: 0; }
.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }

.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }

.rounded { border-radius: 0.5rem; }
.rounded-lg { border-radius: 0.75rem; }
.rounded-xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* S'assurer que le menu reste caché en desktop */
@media (min-width: 769px) {

    .nav-close {
        display: none !important;
    }

    .nav-overlay {
        display: none !important;
    }

    .nav-menu {
        position: static !important;
        width: auto !important;
        height: auto !important;
        padding: 0 !important;
        flex-direction: row !important;
        justify-content: center !important;
        background: transparent !important;
        box-shadow: none !important;
    }
    .nav-brand {
        display: none !important;
    }

    .mobile-menu-toggle {
        display: none !important;
    }

    .main-content {
        margin-top: 0 !important;
    }

    .navigation {
        position: sticky !important;
        top: 0;
    }

}

@media (max-width: 768px) {

     /* Masquer complètement le header-top en mobile */
    .header-top {
       /* display: none !important;*/
       margin-top: 75px;
    }

    /* Masquer le logo-container en mobile */
    .logo-container {
        display: none !important;
    }


    /* Header principal non fixe */
    .main-header {
        position: static; /* Enlever le sticky */
        padding: 1rem 0;
    }

    .container {
        padding: 0 1rem;
    }

    .header-top-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        font-size: 13px;
    }

    .contact-info {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding-top: 10px;
    }


    .logo-section {
        flex-direction: column;
        text-align: center;
    }

    .logo-text h1 {
        font-size: 1.5rem;
    }

    .logo-text p {
        font-size: 0.9rem;
    }

      /* Nouvelle barre de navigation fixe */
    .navigation {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: white;
        box-shadow: var(--shadow-md);
        z-index: 1000;
        padding: 0.75rem 0;
    }

    .navigation .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 1rem;
    }

    /* Logo/Titre dans la barre de navigation */
    .nav-brand {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        color: var(--primary-color);
        text-decoration: none;
        font-weight: 600;
        font-size: 1rem;
    }

    .nav-brand .nav-logo {
        width: 35px;
        height: 35px;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1rem;
        font-weight: bold;
    }

    .nav-brand .nav-logo img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        border-radius: 8px;
    }

    .nav-brand-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .nav-brand-title {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--primary-color);
        margin: 0;
    }

    .nav-brand-subtitle {
        font-size: 0.75rem;
        color: var(--gray-600);
        margin: 0;
    }

    /* Bouton menu dans la barre de navigation */
    .mobile-menu-toggle {
        display: block;
        background: var(--primary-color);
        border: none;
        color: white;
        font-size: 1.2rem;
        cursor: pointer;
        padding: 0.75rem;
        border-radius: 8px;
        transition: var(--transition);
        z-index: 1002;
    }

    .mobile-menu-toggle:hover {
        background: var(--secondary-color);
        transform: scale(1.05);
    }

    /* Menu mobile depuis la droite */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: 4rem 0 2rem 0;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 1001;
        transition: right 0.3s ease-in-out;
        overflow-y: auto;
        display: flex;
    }

    .nav-menu.active {
        right: 0;
    }

    /* Styles des liens dans le menu mobile */
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-link {
        padding: 1.2rem 2rem;
        border-bottom: none;
        width: 100%;
        text-align: left;
        color: var(--gray-700);
        font-weight: 500;
        transition: var(--transition);
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

    .nav-link:hover,
    .nav-link.active {
        background: var(--light-purple);
        color: var(--primary-color);
        padding-left: 2.5rem;
    }

    .nav-link:before {
        display: none;
    }

    /* Overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Bouton close dans le menu */
    .nav-close {
        display: block;
        position: absolute;
        top: 1rem;
        right: 1.5rem;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--gray-600);
        cursor: pointer;
        padding: 0.5rem;
        border-radius: 50%;
        transition: var(--transition);
        z-index: 1002;
    }

    .nav-close:hover {
        background: var(--gray-100);
        color: var(--primary-color);
    }

    /* Masquer les éléments desktop du header */
    .quick-actions {
        display: none;
    }

    .logo-section {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .quick-actions {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .hero h2 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section {
        padding: 3rem 0;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.8rem;
    }

    .logo {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.75rem;
    }

    .page-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-item {
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .card {
        padding: 1.5rem;
    }

    .news-content {
        padding: 1rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8rem;
    }

    .logo {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .logo-text h1 {
        font-size: 1.25rem;
    }

    .logo-text p {
        font-size: 0.8rem;
    }

    .contact-info {
        font-size: 0.8rem;
    }

    .footer {
        padding: 3rem 0 1.5rem;
    }
}

/* Print Styles */
@media print {
    .header-top,
    .main-header,
    .navigation,
    .footer,
    .btn,
    .mobile-menu-toggle {
        display: none !important;
    }

    .main-content {
        min-height: auto;
    }

    .section {
        padding: 2rem 0;
    }

    .card,
    .news-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }

    a {
        color: var(--gray-800) !important;
        text-decoration: underline;
    }

    .page-header {
        background: var(--gray-100) !important;
        color: var(--gray-900) !important;
        padding: 2rem 0;
    }

    .hero {
        background: var(--gray-100) !important;
        color: var(--gray-900) !important;
        padding: 2rem 0;
    }
}