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

:root {
    --color-dark: #333;
    --color-white: #ffffff;
    --color-accent: #007acc;
    --color-bg: #f4f4f4;
    --color-border: #e0e0e0;
    --font-family: Arial, sans-serif;
    --container-max-width: 1200px;
    --transition-smooth: all 0.3s ease;
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

/* Base styles */
body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-dark);
    line-height: 1.6;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header et Navigation */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-card);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

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

.nav-menu a {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--color-dark);
    margin: 3px 0;
    transition: var(--transition-smooth);
}

/* Menu mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition-smooth);
        font-size: 1.2rem;
    }

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

    .hamburger {
        display: flex;
        z-index: 1001;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}

/* Fil d'Ariane */
.breadcrumb {
    background-color: var(--color-white);
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.breadcrumb-list li::after {
    content: ">";
    margin-left: 0.5rem;
    color: #666;
}

.breadcrumb-list li:last-child::after {
    content: "";
}

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

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

/* Main Content */
.main {
    padding: 2rem 0;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.5rem;
    color: var(--color-dark);
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Grille de cartes */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition-smooth);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card-title {
    color: var(--color-accent);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.card-description {
    color: #666;
    margin-bottom: 1rem;
}

.card-link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.card-link:hover {
    text-decoration: underline;
}

/* Content Article */
.article {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
}

.article h1 {
    color: var(--color-dark);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
}

.article h2 {
    color: var(--color-accent);
    font-size: 1.6rem;
    margin: 2rem 0 1rem 0;
}

.article h3 {
    color: var(--color-dark);
    font-size: 1.3rem;
    margin: 1.5rem 0 1rem 0;
}

.article p {
    margin-bottom: 1rem;
}

.article ul, .article ol {
    margin: 1rem 0 1rem 2rem;
}

.article li {
    margin-bottom: 0.5rem;
}

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

/* Articles similaires */
.related-articles {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
}

.related-articles h2 {
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.related-list {
    display: grid;
    gap: 1rem;
}

.related-item {
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
}

.related-item:hover {
    border-color: var(--color-accent);
}

.related-item a {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: 500;
}

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

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

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

.footer-section h3 {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

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

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

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

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

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 1rem;
    text-align: center;
    color: #ccc;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1.1rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .article {
        padding: 1.5rem;
    }
    
    .article h1 {
        font-size: 1.8rem;
    }
    
    .article h2 {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .main {
        padding: 1.5rem 0;
    }
    
    .article {
        padding: 1rem;
    }
    
    .card {
        padding: 1rem;
    }
}

/* Accessibilité */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
a:focus,
button:focus,
.hamburger:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Scroll smooth */
html {
    scroll-behavior: smooth;
}