/* =====================================================
   Variables CSS
===================================================== */

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

[data-theme="dark"] {
    --text-dark: #f9fafb;
    --text-light: #d1d5db;
    --bg-light: #1f2937;
    --bg-white: #111827;
    --border-color: #374151;
}


/* =====================================================
   Reset & Styles Généraux
===================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    transition: background-color 0.3s ease, color 0.3s ease;
}


/* =====================================================
   Navigation
===================================================== */

.navbar {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

.navbar-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.navbar-menu a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.navbar-menu a:hover {
    color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(20deg);
}


/* =====================================================
   Contenu Principal
===================================================== */

.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

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


/* =====================================================
   Héros
===================================================== */

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
    border-radius: 0.5rem;
    margin-bottom: 4rem;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}


/* =====================================================
   Boutons
===================================================== */

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

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


/* =====================================================
   Sections
===================================================== */

.featured-projects,
.projects-page {
    margin-bottom: 4rem;
}

.featured-projects h2,
.projects-page h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.projects-intro {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}


/* =====================================================
   Grille de Projets
===================================================== */

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    align-items: stretch;
}

.project-card {
    background-color: var(--bg-light);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 32px rgba(37, 99, 235, 0.15);
    border-color: var(--primary-color);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--border-color);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.project-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}


/* =====================================================
   Détail Projet
===================================================== */

.project-detail {
    max-width: 800px;
    margin: 0 auto;
}

.project-detail>a {
    display: inline-block;
    margin-bottom: 2rem;
}

.project-detail article h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.project-hero-image {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.project-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.project-meta span {
    color: var(--text-light);
    font-size: 0.95rem;
}

.project-body h2 {
    font-size: 1.75rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.project-body p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.project-body ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.project-body li {
    margin-bottom: 0.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}


/* =====================================================
   Pied de Page
===================================================== */

.footer {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: 4rem;
}

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

.footer-container p {
    color: var(--text-light);
}

.footer-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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


/* =====================================================
   Page d'Erreur
===================================================== */

.error-page {
    text-align: center;
    padding: 4rem 2rem;
}

.error-page h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--danger);
}

.error-page p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}


/* =====================================================
   Responsive Design
===================================================== */

@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        gap: 1rem;
    }
    .navbar-menu {
        gap: 1rem;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .featured-projects h2,
    .projects-page h1 {
        font-size: 2rem;
    }
    .projects-grid {
        width: 100%;
    }
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    .project-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    .project-links {
        flex-direction: column;
    }
    .project-links a {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    .hero {
        padding: 3rem 1rem;
    }
    .hero-content h1 {
        font-size: 1.5rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    .projects-grid {
        gap: 1.5rem;
    }
}