:root {
    --bg-main: #FAFAFA; --bg-card: #FFFFFF;
    --text-primary: #0F172A; --text-secondary: #64748B;
    --border-color: #E2E8F0; --input-bg: #F8FAFC;
    --header-bg: rgba(255, 255, 255, 0.75);
    --gradient-main: linear-gradient(135deg, #4F46E5 0%, #EC4899 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-main: #0B0F19; --bg-card: #111827;
    --text-primary: #F9FAFB; --text-secondary: #9CA3AF;
    --border-color: #1F2937; --input-bg: #1F2937;
    --header-bg: rgba(11, 15, 25, 0.75);
    --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }
html { scroll-behavior: smooth; }
body { background-color: var(--bg-main); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; display: flex; flex-direction: column; min-height: 100vh; }

.bg-grid { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-image: linear-gradient(to right, rgba(150,150,150,0.05) 1px, transparent 1px), linear-gradient(to bottom, rgba(150,150,150,0.05) 1px, transparent 1px); background-size: 40px 40px; z-index: -2; pointer-events: none; }
.hero-glow { position: absolute; top: 10%; left: 50%; transform: translateX(-50%); width: 60vw; height: 600px; background: var(--gradient-main); filter: blur(120px); opacity: 0.15; z-index: -1; border-radius: 50%; pointer-events: none; }

.text-gradient, .icon-gradient { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; display: inline-block; }

/* NOUVEAUX BOUTONS "TECH" */
.btn-primary { display: inline-flex; align-items: center; justify-content: center; background: var(--text-primary); color: var(--bg-main); padding: 12px 32px; border-radius: 50px; font-weight: 600; font-size: 0.9rem; text-decoration: none; border: 1px solid var(--text-primary); cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.btn-primary:hover { background: transparent; color: var(--text-primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.w-100 { width: 100%; }

/* NOUVEAU HEADER FLOTTANT */
.glass-nav { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; position: fixed; width: 90%; max-width: 1100px; top: 20px; left: 50%; transform: translateX(-50%); z-index: 1000; background: var(--header-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--border-color); border-radius: 100px; box-shadow: var(--shadow-sm); transition: all 0.3s ease; }
.logo { font-weight: 800; font-size: 1.2rem; display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text-primary); }
.logo span { color: var(--text-secondary); font-weight: 400; }

.nav-main ul { display: flex; gap: 30px; list-style: none; }
.nav-main a { color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; font-weight: 500; transition: 0.3s; }
.nav-main a:hover, .nav-main a.active { color: var(--text-primary); }

.header-actions { display: flex; align-items: center; gap: 15px; }
.btn-header { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); padding: 8px 16px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; text-decoration: none; transition: 0.3s ease; }
.btn-header:hover { border-color: var(--text-primary); background: var(--text-primary); color: var(--bg-main); }

#theme-toggle { background: transparent; border: none; font-size: 1.1rem; color: var(--text-secondary); cursor: pointer; padding: 5px; outline: none; }
#theme-toggle:hover { color: var(--text-primary); }
[data-theme="dark"] .dark-icon { display: none; }
[data-theme="dark"] .light-icon { display: inline-block; color: #FBBF24; }
:root:not([data-theme="dark"]) .light-icon { display: none; }

.page-content { padding-top: 120px; flex: 1; }

/* HERO */
.hero { min-height: 80vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 0 5%; }
.badge-modern { display: inline-flex; align-items: center; gap: 8px; background: var(--bg-card); padding: 6px 18px; border-radius: 30px; font-size: 0.75rem; font-weight: 700; border: 1px solid var(--border-color); margin-bottom: 30px; text-transform: uppercase; letter-spacing: 1px; }
.pulse-dot { width: 8px; height: 8px; background: var(--text-primary); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0% { transform: scale(0.95); opacity: 1; } 70% { transform: scale(1.2); opacity: 0.5; } 100% { transform: scale(0.95); opacity: 1; } }
.hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1.1; margin-bottom: 20px; letter-spacing: -1.5px; font-weight: 800; }
.hero p { color: var(--text-secondary); max-width: 600px; margin: 0 auto 30px; font-size: 1rem; }

/* FIX DES INDICATEURS DE PERFORMANCES (CSS GRID BLINDÉ) */
.sys-metrics { margin-bottom: 60px; padding: 0 5%; }
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; max-width: 1100px; margin: 0 auto; width: 100%; }
.metric-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 30px 20px; text-align: center; box-shadow: var(--shadow-sm); }
.metric-label { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; display: block; margin-bottom: 10px; }
.metric-value { font-size: 2.5rem; font-weight: 800; color: var(--text-primary); margin-bottom: 5px; line-height: 1; letter-spacing: -1px; }
.metric-value .unit { font-size: 1rem; color: var(--text-secondary); margin-left: 5px; font-weight: 500; }
.metric-desc { font-size: 0.8rem; color: var(--text-secondary); }

/* FIX DE LA MATRICE ET DU TERMINAL */
.tech-overview { padding: 0 5% 100px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; max-width: 1100px; margin: 0 auto; align-items: stretch; }
.matrix-container { background: var(--bg-card); padding: 35px; border-radius: 12px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); display: flex; flex-direction: column; justify-content: space-between; height: 100%; }
.mono-title { font-family: 'JetBrains Mono', monospace; font-size: 1rem; color: var(--text-primary); margin-bottom: 25px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
.matrix-group { margin-bottom: 20px; }
.matrix-group:last-child { margin-bottom: 0; }
.matrix-group h4 { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 1px; }
.matrix-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.matrix-tags span { background: var(--bg-main); border: 1px solid var(--border-color); padding: 6px 12px; border-radius: 4px; font-size: 0.75rem; font-family: 'JetBrains Mono', monospace; color: var(--text-secondary); }

.terminal-card { background: #0F172A; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); color: #38BDF8; font-family: 'JetBrains Mono', monospace; border: 1px solid #1E293B; display: flex; flex-direction: column; height: 100%; }
.terminal-header { background: #1E293B; padding: 10px 15px; font-size: 0.75rem; color: #94A3B8; display: flex; gap: 8px; align-items: center; }
.terminal-header span { width: 10px; height: 10px; border-radius: 50%; background: #CBD5E1; }
.terminal-header span:nth-child(1) { background: #ff5f56; } .terminal-header span:nth-child(2) { background: #ffbd2e; } .terminal-header span:nth-child(3) { background: #27c93f; }
.terminal-body { padding: 25px; font-size: 0.8rem; line-height: 1.8; text-align: left; flex-grow: 1; }
.prompt { color: #A78BFA; font-weight: bold; }
.success { color: #34D399; font-weight: bold; }
.blink-cursor { display: inline-block; animation: blink 1s step-end infinite; color: #FFF; font-weight: bold; }
@keyframes blink { 50% { opacity: 0; } }

/* NOUVEAU FOOTER PLUS PETIT */
.pro-footer { border-top: 1px solid var(--border-color); background: var(--bg-main); padding-top: 40px; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 30px; padding: 0 5%; max-width: 1100px; margin-left: auto; margin-right: auto; }
.footer-brand p { color: var(--text-secondary); font-size: 0.85rem; margin: 15px 0; max-width: 300px; }
.status-badge { display: inline-flex; align-items: center; gap: 8px; font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600; color: var(--text-primary); background: var(--bg-card); padding: 6px 12px; border-radius: 20px; border: 1px solid var(--border-color); }
.footer-links h4, .footer-contact h4 { font-size: 0.85rem; color: var(--text-primary); margin-bottom: 15px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.footer-links ul, .footer-contact ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a, .footer-contact a { color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; transition: 0.3s; display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover, .footer-contact a:hover { color: var(--text-primary); transform: translateX(3px); }

.footer-bottom { border-top: 1px solid var(--border-color); padding: 20px 0; }
.bottom-flex { display: flex; justify-content: space-between; align-items: center; padding: 0 5%; max-width: 1100px; margin: 0 auto; }
.legal-links { display: flex; gap: 15px; }
.legal-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.75rem; transition: 0.3s; }
.legal-links a:hover { color: var(--text-primary); }
.copyright { font-size: 0.75rem; color: var(--text-secondary); }

/* ANIMATIONS */
.reveal-up { opacity: 0; transform: translateY(20px); transition: 0.6s ease-out; }
.reveal-fade { opacity: 0; transition: 0.8s ease-out; }
.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 900px) { 
    .grid-2, .footer-grid { grid-template-columns: 1fr; gap: 30px;} 
    .bottom-flex { flex-direction: column; gap: 10px; text-align: center; } 
    .nav-main { display: none; } 
    .glass-nav { width: 95%; padding: 10px 20px; }
}