/* ===== Design Unique Knowledge Base ===== */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Palette unique */
    --primary: #6366F1;      /* Indigo vif */
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #F59E0B;    /* Amber/Orange */
    --accent: #EC4899;       /* Pink */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Backgrounds */
    --bg-main: #FAFBFC;
    --bg-card: #FFFFFF;
    --bg-code: #F8F9FC;
    --bg-sidebar: #F5F7FA;
    
    /* Texte */
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    
    /* Borders */
    --border-color: #E2E8F0;
    --border-accent: var(--primary);
    
    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(99, 102, 241, 0.08);
    --shadow-md: 0 4px 12px rgba(99, 102, 241, 0.12);
    --shadow-lg: 0 8px 24px rgba(99, 102, 241, 0.15);
    --shadow-xl: 0 12px 40px rgba(99, 102, 241, 0.2);
    
    /* Fonts */
    --font-main: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-main);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== Top Bar Minimaliste ===== */
.main-nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    letter-spacing: -0.5px;
    transition: transform 0.2s ease;
}

.logo-text:hover {
    transform: scale(1.05);
}

.logo-text i {
    font-size: 26px;
}

.nav-links {
    display: none;
}

/* ===== Hero Header Unique ===== */
.main-header {
    margin-top: 64px;
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--accent) 100%);
    position: relative;
    overflow: hidden;
}

.main-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

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

.header-content h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    color: white;
    letter-spacing: -1px;
}

.header-content .subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.95);
    max-width: 700px;
    line-height: 1.6;
    font-weight: 400;
}

/* ===== Search Section ===== */
.search-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-box i {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 20px;
}

#searchInput {
    width: 100%;
    padding: 18px 20px 18px 56px;
    font-size: 16px;
    font-family: var(--font-main);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-main);
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

#searchInput:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    background: white;
}

#searchInput::placeholder {
    color: var(--text-muted);
}

.search-results {
    max-width: 600px;
    margin: var(--space-md) auto 0;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: none;
    overflow: hidden;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    display: block;
    color: inherit;
    transition: all 0.2s ease;
}

.search-result-item:hover {
    background: var(--bg-main);
    padding-left: calc(var(--space-lg) + 4px);
}

.search-result-item:last-child {
    border-bottom: none;
}

/* ===== Navigation Grid Cards Unique ===== */
.main-nav {
    padding: var(--space-3xl) 0;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-lg);
}

.nav-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    display: block;
    position: relative;
    overflow: hidden;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.nav-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.nav-card:hover::before {
    transform: scaleY(1);
}

.nav-card i {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: var(--space-md);
    display: block;
}

.nav-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.nav-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* Couleurs alternées pour les cards */
.nav-card:nth-child(1) i { color: var(--primary); }
.nav-card:nth-child(2) i { color: var(--secondary); }
.nav-card:nth-child(3) i { color: var(--accent); }
.nav-card:nth-child(4) i { color: var(--success); }
.nav-card:nth-child(5) i { color: #8B5CF6; }
.nav-card:nth-child(6) i { color: #06B6D4; }

/* ===== Recent Section ===== */
.recent-section {
    padding: var(--space-3xl) 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
}

.recent-section h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    position: relative;
    padding-bottom: var(--space-md);
}

.recent-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.recent-card {
    background: var(--bg-main);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all 0.3s ease;
}

.recent-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 2px solid var(--border-color);
}

.badge.sql {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-color: var(--primary);
}

.badge.python {
    background: rgba(245, 158, 11, 0.1);
    color: var(--secondary);
    border-color: var(--secondary);
}

.badge.web {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-color: var(--success);
}

.badge.gestion {
    background: rgba(139, 92, 246, 0.1);
    color: #8B5CF6;
    border-color: #8B5CF6;
}

.recent-card h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.recent-card p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.recent-card a {
    color: var(--primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: gap 0.2s ease;
}

.recent-card a:hover {
    gap: var(--space-sm);
}

.recent-card a i {
    font-size: 14px;
}

/* ===== Footer ===== */
.main-footer {
    background: var(--text-primary);
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    padding: var(--space-2xl) 0;
    border-top: 4px solid var(--primary);
}

.main-footer p {
    margin-bottom: var(--space-sm);
    font-size: 15px;
}

.main-footer a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
}

.main-footer a:hover {
    text-decoration: underline;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .header-content h1 {
        font-size: 36px;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-grid,
    .recent-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .main-nav,
    .recent-section {
        padding: var(--space-xl) 0;
    }
}