/* ===== STYLES DE BASE ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --border-color: #e5e7eb;
    --text-color: #374151;
    --text-muted: #6b7280;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--light-color) 0%, #e0f2fe 100%);
    min-height: 100vh;
}

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

.section {
    padding: 4rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== NAVIGATION ===== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--dark-color);
}

.nav-brand i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

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

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.nav-link.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.2);
}

.nav-toggle {
    display: none;
    background: var(--primary-color);
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    color: white;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
    margin: 5px auto 0;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.1) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 0 40h40M20 0v-20h-20z" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateX(0); }
    100% { transform: translateX(40px); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== BOUTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background: var(--light-color);
    color: var(--text-color);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ===== CARTES ===== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    transition: var(--transition);
}

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

.step-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.step-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
}

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

.gpu-comparison-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.gpu-comparison-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.02), white);
}

.gpu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.gpu-header h3 {
    color: var(--dark-color);
    margin: 0;
}

.gpu-price {
    font-size: 1.125rem;
    color: var(--text-muted);
    font-weight: 600;
}

.recommended-badge {
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 1rem;
}

.gpu-specs {
    display: grid;
    gap: 1rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
}

.spec-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.spec-value {
    font-weight: 600;
    color: var(--text-color);
}

.spec-value.excellent {
    color: var(--success-color);
}

/* ===== UTILITAIRES ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.progress-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(0, 0, 0, 0.1);
    z-index: 1001;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
}

/* ===== FORMULAIRES ===== */
.input-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.input-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.input-group input {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.calculator-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.calculator-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.calculator-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.result-item {
    padding: 1rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
    text-align: center;
}

.result-label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* ===== SECTION MÉTHODES SIMPLIFIÉE ===== */
.categories-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.category-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1;
}

.category-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.category-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.category-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.category-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.featured-methods {
    margin-bottom: 3rem;
}

.featured-methods h3 {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.featured-method-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.featured-method-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.featured-method-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.featured-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.featured-stats .stat {
    background: var(--light-color);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
}

.cta-comparatif {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    margin-top: 3rem;
}

.cta-comparatif h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: white;
}

.cta-comparatif p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-comparatif .btn {
    background: white;
    color: var(--primary-color);
    border: none;
}

.cta-comparatif .btn:hover {
    background: var(--light-color);
    transform: translateY(-2px);
}

/* Responsive pour les méthodes */
@media (max-width: 768px) {
    .categories-overview {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .featured-stats {
        justify-content: center;
    }
    
    .cta-comparatif {
        padding: 2rem 1.5rem;
    }
    
    .cta-comparatif h3 {
        font-size: 1.5rem;
    }
    
    .cta-comparatif p {
        font-size: 1rem;
    }
}

/* ===== TABLEAUX COMPARATIFS ===== */
.table-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.control-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 300px;
}

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-color);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.filter-btn:hover {
    background: var(--light-color);
    border-color: var(--primary-color);
}

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

.search-group {
    position: relative;
}

.search-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    width: 250px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.result-count-container {
    margin-bottom: 1rem;
    text-align: center;
}

.result-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--light-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    display: inline-block;
}

.comparison-full {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.table-responsive {
    overflow-x: auto;
    max-width: 100%;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.comparison-table th {
    background: var(--light-color);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.comparison-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}

.comparison-table th.sortable:hover {
    background: var(--primary-color);
    color: white;
}

.comparison-table th.sortable i {
    margin-left: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.5;
}

.comparison-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.method-row {
    transition: var(--transition);
}

.method-row:hover {
    background: var(--light-color);
}

.method-row.hidden {
    display: none;
}

.method-link-table {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.method-link-table:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.rating {
    color: var(--warning-color);
    font-size: 0.875rem;
}

.risk {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.risk.nul { background: #e8f5e8; color: #2d5016; }
.risk.faible { background: #e3f2fd; color: #1565c0; }
.risk.moyen { background: #fff3e0; color: #f57c00; }
.risk.eleve { background: #ffebee; color: #c62828; }
.risk.very-high { background: #fce4ec; color: #ad1457; }

.accessibility {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.accessibility.very-low { background: #ffebee; color: #c62828; }
.accessibility.low { background: #fff3e0; color: #f57c00; }
.accessibility.medium { background: #fff9c4; color: #f9a825; }
.accessibility.high { background: #e8f5e8; color: #2d5016; }
.accessibility.very-high { background: #e3f2fd; color: #1565c0; }

.verdict {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.verdict.low { background: #f5f5f5; color: #666; }
.verdict.good { background: #e8f5e8; color: #2d5016; }
.verdict.warning { background: #fff3e0; color: #f57c00; }
.verdict.excellent { background: #e3f2fd; color: #1565c0; }

.featured-row {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
}

.featured-row:hover {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
}

/* Responsive pour les tableaux */
@media (max-width: 768px) {
    .table-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-group {
        justify-content: center;
    }
    
    .filter-group {
        min-width: auto;
    }
    
    .category-filters {
        justify-content: center;
    }
    
    .search-input {
        width: 100%;
    }
    
    .comparison-table {
        font-size: 0.75rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
}
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        gap: 0;
        padding: 2rem;
        max-height: 90vh;
        overflow-y: auto;
        transform: translateX(-100%);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .step-card {
        padding: 1.5rem;
    }

    .gpu-comparison-card {
        padding: 1.5rem;
    }

    .calculator-inputs,
    .calculator-results {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}