/* Variables CSS */
:root {
    --primary: #0d9488;
    --primary-dark: #115e59;
    --primary-light: #2dd4bf;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --white: #ffffff;
    --shadow: 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);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.blog-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.blog-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    position: relative;
}

.blog-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.blog-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.blog-menu a {
    font-weight: 500;
    color: var(--dark);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
}

.blog-menu a:hover {
    color: var(--primary);
    background: var(--light);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
    padding: 0.5rem;
}

/* Hero Section */
.blog-hero {
    background: linear-gradient(135deg, #f0fdfa 0%, #e0f2fe 100%);
    padding: 4rem 0;
    text-align: center;
}

.blog-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1rem;
    color: var(--dark);
    line-height: 1.2;
}

.blog-hero p {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-box {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    background: var(--white);
    border-radius: 50px;
    padding: 0.5rem;
    box-shadow: var(--shadow);
}

.search-box input {
    flex: 1;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    font-size: 1rem;
    outline: none;
    font-family: inherit;
}

.search-box button {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.search-box button:hover {
    background: var(--primary-dark);
}

/* Sections */
.section-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 2rem;
    text-align: center;
    color: var(--dark);
}

/* Featured Posts */
.featured-posts {
    padding: 4rem 0;
}

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

/* Recent Posts */
.recent-posts {
    padding: 3rem 0;
    background: var(--white);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Post Cards */
.post-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #e2e8f0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.post-card-small {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #e2e8f0;
    height: 100%;
}

.post-card-small:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.post-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
}

.post-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-category {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    display: inline-block;
    background: #f0fdfa;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.post-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    line-height: 1.4;
    flex: 1;
}

.post-title a {
    color: var(--dark);
    text-decoration: none;
}

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

.post-excerpt {
    color: var(--gray);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.post-meta {
    display: flex;
    gap: 1rem;
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-top: auto;
}

.post-meta i {
    margin-right: 0.25rem;
}

/* Categories */
.categories-section {
    padding: 4rem 0;
    background: var(--white);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.category-card h3 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.category-card p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.post-count {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Newsletter */
.newsletter-section {
    background: var(--primary);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.newsletter-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.newsletter-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.newsletter-form {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    gap: 0.5rem;
}

.newsletter-input {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

.newsletter-input:focus {
    outline: 2px solid var(--primary-dark);
}

.btn {
    background: var(--dark);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
}

.btn:hover {
    background: var(--dark-light);
}

.newsletter-note {
    margin-top: 1rem;
    opacity: 0.8;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Footer */
.blog-footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-light);
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-light);
}

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

.footer-bottom a {
    color: var(--gray-light);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .blog-nav {
        flex-wrap: wrap;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .blog-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: var(--shadow-lg);
        padding: 1rem;
        border-radius: 0 0 var(--radius) var(--radius);
    }
    
    .blog-menu.active {
        display: flex;
    }
    
    .blog-menu li {
        width: 100%;
    }
    
    .blog-menu a {
        display: block;
        padding: 1rem;
        border-radius: 6px;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .blog-hero {
        padding: 3rem 0;
    }
    
    .featured-posts,
    .recent-posts,
    .categories-section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .post-content {
        padding: 1rem;
    }
    
    .post-image {
        height: 150px;
    }
    
    .category-card {
        padding: 1.5rem;
    }
    
    .blog-hero h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}

/* Accessibilité */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
a:focus,
button:focus,
input:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .blog-header,
    .newsletter-section,
    .blog-footer {
        display: none;
    }
    
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    
    .container {
        max-width: none;
    }
}