:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #e63946;
    --accent-dark: #c1121f;
    --text: #e0e0e0;
    --text-dark: #8892b0;
    --card-bg: rgba(22, 33, 62, 0.95);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--text);
    line-height: 1.6;
}

.header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 2px solid var(--accent);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
}

.logo:hover {
    color: var(--accent-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-menu a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent);
}

.main-content {
    max-width: 1200px;
    margin: 80px auto 0;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(230, 57, 70, 0.1), rgba(0, 0, 0, 0.3));
    border-radius: 20px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent);
    padding-left: 1rem;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(230, 57, 70, 0.2);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(230, 57, 70, 0.2);
    border-color: var(--accent);
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-content {
    padding: 1.5rem;
}

.article-content h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

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

.btn-outline {
    border: 2px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

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

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-warning {
    background: #ffc107;
    color: #1a1a2e;
}

.footer {
    text-align: center;
    padding: 2rem;
    background: var(--primary);
    margin-top: 3rem;
    border-top: 1px solid var(--accent);
}

/* Formulaire admin */
.admin-form {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    border: none;
    background: var(--primary);
    color: var(--text);
}

.form-group textarea {
    min-height: 300px;
}

.admin-table {
    width: 100%;
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(230, 57, 70, 0.2);
}

.admin-table th {
    background: rgba(230, 57, 70, 0.2);
    color: var(--accent);
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .articles-grid {
        grid-template-columns: 1fr;
    }
}