:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-card-hover: #1f2b3d;
    --bg-nav: rgba(10, 14, 23, 0.95);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #00ff88;
    --accent-dim: #00cc6a;
    --accent-glow: rgba(0, 255, 136, 0.15);
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-red: #ef4444;
    --accent-orange: #f59e0b;
    --accent-cyan: #06b6d4;
    --border: #1e293b;
    --border-light: #334155;
    --gradient-start: #00ff88;
    --gradient-end: #3b82f6;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-dim); }

code {
    font-family: 'JetBrains Mono', monospace;
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85em;
}

pre {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    overflow-x: auto;
    margin: 16px 0;
}

pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
    font-size: 0.85em;
    line-height: 1.8;
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ===== NAVBAR ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.navbar.scrolled { box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5); }
.nav-container { max-width: 1400px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; color: var(--text-primary) !important; }
.logo-icon { font-family: 'JetBrains Mono', monospace; background: linear-gradient(135deg, var(--accent), var(--accent-blue)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-size: 1.5rem; font-weight: 700; }
.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-link { padding: 8px 16px; border-radius: var(--radius-sm); color: var(--text-secondary) !important; font-weight: 500; font-size: 0.9rem; transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--text-primary) !important; background: rgba(255, 255, 255, 0.05); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); }

/* ===== HERO ===== */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden; padding: 120px 24px 80px;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg canvas { width: 100%; height: 100%; opacity: 0.15; }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 900px; }
.hero-badge { display: inline-block; background: var(--accent-glow); color: var(--accent); padding: 6px 20px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; border: 1px solid rgba(0, 255, 136, 0.2); }
.hero-title { font-size: clamp(2.5rem, 7vw, 5rem); font-weight: 900; line-height: 1.1; margin-bottom: 24px; letter-spacing: -0.02em; }
.highlight { background: linear-gradient(135deg, var(--accent), var(--accent-blue)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 1.2rem; color: var(--text-secondary); max-width: 650px; margin: 0 auto 48px; line-height: 1.8; }
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-bottom: 48px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-size: 2.5rem; font-weight: 800; color: var(--accent); font-family: 'JetBrains Mono', monospace; }
.stat-label { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: var(--transition); border: none; font-family: inherit; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dim)); color: var(--bg-primary); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 255, 136, 0.3); color: var(--bg-primary); }
.btn-outline { background: transparent; border: 1px solid var(--border-light); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }

/* ===== SECTIONS ===== */
.section { padding: 100px 24px; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 800; text-align: center; margin-bottom: 16px; }
.section-desc { text-align: center; color: var(--text-secondary); max-width: 600px; margin: 0 auto 48px; font-size: 1.05rem; }

/* ===== FORMATIONS GRID ===== */
.formations-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.formation-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px; transition: var(--transition); display: flex; flex-direction: column;
    color: var(--text-primary) !important;
}
.formation-card:hover { border-color: var(--card-accent, var(--accent)); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3); }
.formation-icon { font-size: 2.5rem; margin-bottom: 12px; }
.formation-badge { display: inline-block; font-size: 0.7rem; background: rgba(255,255,255,0.05); color: var(--text-muted); padding: 3px 10px; border-radius: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px; width: fit-content; }
.formation-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.formation-card > p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 16px; flex: 1; }
.formation-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.formation-tags span { font-size: 0.75rem; background: rgba(0, 255, 136, 0.08); color: var(--accent); padding: 3px 10px; border-radius: 10px; border: 1px solid rgba(0, 255, 136, 0.15); }
.formation-meta { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.85rem; }

/* ===== PARCOURS TIMELINE ===== */
.parcours-timeline { max-width: 700px; margin: 0 auto; position: relative; }
.parcours-timeline::before { content: ''; position: absolute; left: 24px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--accent), var(--accent-blue), var(--accent-purple)); }
.parcours-item { display: flex; gap: 24px; margin-bottom: 32px; position: relative; }
.parcours-num { width: 50px; height: 50px; border-radius: 50%; background: var(--bg-card); border: 2px solid var(--accent); display: flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace; font-weight: 800; color: var(--accent); flex-shrink: 0; z-index: 1; }
.parcours-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px; flex: 1; }
.parcours-content h3 { font-size: 1.1rem; margin-bottom: 6px; }
.parcours-content p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 10px; }
.parcours-tag { display: inline-block; font-size: 0.75rem; padding: 3px 12px; border-radius: 10px; font-weight: 600; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.about-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; text-align: center; transition: var(--transition); }
.about-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.about-icon { font-size: 2.5rem; margin-bottom: 16px; display: block; }
.about-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.about-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== FOOTER ===== */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 30px 24px; }
.footer-bottom { text-align: center; color: var(--text-muted); font-size: 0.85rem; max-width: 1400px; margin: 0 auto; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-menu { position: fixed; top: 70px; left: 0; right: 0; background: var(--bg-nav); flex-direction: column; padding: 24px; gap: 8px; transform: translateY(-100%); opacity: 0; pointer-events: none; transition: var(--transition); border-bottom: 1px solid var(--border); }
    .nav-menu.active { transform: translateY(0); opacity: 1; pointer-events: all; }
    .hamburger { display: flex; }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 2rem; }
    .formations-grid { grid-template-columns: 1fr; }
    .parcours-timeline::before { left: 24px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .section { padding: 60px 16px; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.animate-in { animation: fadeInUp 0.6s ease forwards; }