/* ====== RESET ET VARIABLES ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg-primary: #f5f5f5;
    --color-bg-secondary: #ffffff;
    --color-text-primary: #2c2c2c;
    --color-text-secondary: #666666;
    --color-accent: #0066cc;
    --color-accent-hover: #0052a3;
    --color-border: #e0e0e0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
}

/* ====== HEADER ====== */
header {
    background-color: var(--color-bg-secondary);
    border-bottom: 2px solid var(--color-border);
    box-shadow: 0 2px 8px var(--color-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: var(--color-text-primary);
}

.logo-section img {
    height: 48px;
    width: auto;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
}

.logo-text p {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ====== NAVIGATION ====== */
nav ul {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

nav > ul > li {
    position: relative;
}

nav a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    display: block;
}

nav > ul > li > a:hover,
nav > ul > li > a.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ====== MENU DÉROULANT ====== */
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    box-shadow: 0 4px 12px var(--color-shadow);
    min-width: 200px;
    z-index: 1000;
    margin-top: 8px;
}

nav li:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    padding: 12px 16px;
    border: none;
    color: var(--color-text-primary);
    transition: all 0.2s ease;
}

.dropdown-menu a:hover {
    background-color: var(--color-bg-primary);
    color: var(--color-accent);
    border-bottom: none;
}

/* ====== MAIN CONTENT ====== */
main {
    max-width: 1200px;
    margin: var(--space-lg) auto;
    padding: 0 var(--space-md);
    min-height: calc(100vh - 300px);
}

/* ====== ARTICLE GRID ====== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.article-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px var(--color-shadow);
}

.article-card:hover {
    box-shadow: 0 8px 16px var(--color-shadow);
    transform: translateY(-4px);
}

.article-card-content {
    padding: var(--space-md);
}

.article-card h3 {
    font-size: 18px;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.article-category {
    display: inline-block;
    background-color: #e3f2fd;
    color: var(--color-accent);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.article-excerpt {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

.article-link {
    display: inline-block;
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.article-link:hover {
    color: var(--color-accent-hover);
}

/* ====== CATEGORIES LIST ====== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.category-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.category-card:hover {
    box-shadow: 0 8px 16px var(--color-shadow);
}

.category-header {
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    padding: var(--space-md);
    text-align: center;
}

.category-header h3 {
    font-size: 18px;
    margin-bottom: var(--space-sm);
}

.category-articles {
    padding: var(--space-md);
}

.category-article-item {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.category-article-item:last-child {
    border-bottom: none;
}

.category-article-item a {
    color: var(--color-accent);
    text-decoration: none;
    font-size: 14px;
    display: block;
    padding: var(--space-sm) 0;
    transition: color 0.3s ease;
}

.category-article-item a:hover {
    color: var(--color-accent-hover);
}

.category-date {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* ====== ARTICLE SINGLE PAGE ====== */
.article-single {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
}

.article-header {
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--space-lg);
}

.article-header h1 {
    font-size: 32px;
    margin-bottom: var(--space-md);
}

.article-header-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.article-body img {
    max-width: 100%;
    height: auto;
    margin: var(--space-lg) 0;
    border-radius: 4px;
}

/* ====== PAGINATION ====== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin: var(--space-lg) 0;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: all 0.3s ease;
    font-size: 14px;
}

.pagination a:hover {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.pagination .active {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

/* ====== BREADCRUMB ====== */
.breadcrumb {
    margin-bottom: var(--space-lg);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--color-accent);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* ====== FOOTER ====== */
footer {
    background-color: var(--color-bg-secondary);
    border-top: 2px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--space-lg) var(--space-md);
    margin-top: var(--space-lg);
    font-size: 14px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

/* ====== UTILITIES ====== */
.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: var(--space-md);
    border-radius: 4px;
    margin: var(--space-lg) 0;
    border-left: 4px solid #c62828;
}

.no-articles {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-secondary);
}

/* ====== RESPONSIVE DESIGN ====== */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }

    .logo-section {
        flex-direction: column;
    }

    nav ul {
        justify-content: center;
        gap: var(--space-md);
    }

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

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

    .article-header h1 {
        font-size: 24px;
    }

    .article-header-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }

    main {
        margin: var(--space-md) auto;
    }

    .dropdown-menu {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        background-color: #f9f9f9;
        margin-top: 0;
    }

    nav li:hover .dropdown-menu {
        display: none;
    }

    nav li.active .dropdown-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    :root {
        --space-sm: 6px;
        --space-md: 12px;
        --space-lg: 16px;
    }

    .logo-section img {
        height: 40px;
    }

    .logo-text h1 {
        font-size: 18px;
    }

    nav ul {
        gap: var(--space-sm);
    }

    nav a {
        font-size: 13px;
        padding: 4px 0;
    }

    .article-card-content {
        padding: var(--space-sm);
    }

    .article-header h1 {
        font-size: 20px;
    }
}