* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', sans-serif; background: #000; color: #fff; }
.bg-fixed {
  position: fixed; inset: 0; z-index: 0;
  background: radial-gradient(ellipse at bottom center, #1a0a00 0%, #000 60%);
}
.radar-grid {
  position: fixed; inset: 0; z-index: 0; opacity: 0.15;
  background-image: linear-gradient(rgba(239,68,68,0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,68,68,0.4) 1px, transparent 1px);
  background-size: 50px 50px;
}
.scan-line {
  position: fixed; left: 0; right: 0; height: 2px; z-index: 1;
  background: linear-gradient(to right, transparent, rgba(245,158,11,0.3), transparent);
  animation: scan 4s linear infinite;
}
@keyframes scan { from { top: 0%; } to { top: 100%; } }
.red-overlay { position: fixed; inset: 0; background: rgba(220,38,38,0.07); z-index: 0; pointer-events: none; }
main { position: relative; z-index: 10; }

/* HEADER */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(0,0,0,0.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid #1f2937; padding: 0 2rem;
}
.header-inner { max-width: 1280px; margin: auto; display: flex; align-items: center; justify-content: space-between; height: 80px; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; font-size: 1.25rem; font-weight: 800; color: #fff; }
.logo span { color: #f59e0b; }
.logo svg { width: 32px; height: 32px; fill: none; stroke: #f59e0b; stroke-width: 2; }
nav a { color: #d1d5db; text-decoration: none; font-size: 0.875rem; font-weight: 500; margin-left: 1.5rem; transition: color 0.2s; }
nav a:hover, nav a.active { color: #fff; }
nav a.cta-nav { background: #f59e0b; color: #000; padding: 8px 16px; font-weight: 700; }
nav a.cta-nav:hover { background: #d97706; }

/* HAMBURGER MOBILE */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; transition: all 0.3s; }
.mobile-nav { display: none; flex-direction: column; background: #111; padding: 1rem 2rem 2rem; gap: 1rem; }
.mobile-nav a { color: #d1d5db; text-decoration: none; font-size: 1rem; padding: 8px 0; border-bottom: 1px solid #1f2937; }
.mobile-nav a:hover { color: #f59e0b; }
.mobile-nav a.cta-nav { background: #f59e0b; color: #000; text-align: center; padding: 12px; font-weight: 700; border: none; }

@media (max-width: 1024px) {
  nav { display: none; }
  .hamburger { display: flex; }
}

/* HERO */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 100px 2rem 4rem; }
.hero-content { max-width: 900px; }
.badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); color: #f59e0b; padding: 6px 16px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; margin-bottom: 1.5rem; }
h1 { font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 800; line-height: 1.1; margin-bottom: 1.5rem; }
h1 .gold { color: #f59e0b; }
.hero p { font-size: 1.125rem; color: #9ca3af; max-width: 600px; margin: 0 auto 2.5rem; line-height: 1.7; }
.btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; font-weight: 700; font-size: 1rem; text-decoration: none; transition: all 0.2s; cursor: pointer; border: none; }
.btn-gold { background: #f59e0b; color: #000; }
.btn-gold:hover { background: #d97706; }
.btn-outline { background: transparent; color: #fff; border: 1px solid #374151; }
.btn-outline:hover { background: rgba(255,255,255,0.05); }

/* SECTIONS */
section { padding: 5rem 2rem; }
.container { max-width: 1280px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 1rem; }
.section-header p { color: #9ca3af; font-size: 1.125rem; max-width: 600px; margin: 0 auto; line-height: 1.7; }
.bg-dark { background: rgba(3, 7, 18, 0.5); }

/* CARDS */
.grid { display: grid; gap: 2rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { background: rgba(17,24,39,0.4); border: 1px solid #1f2937; padding: 2rem; transition: border-color 0.3s; }
.card:hover { border-color: rgba(245,158,11,0.3); }
.card-icon { width: 56px; height: 56px; background: rgba(245,158,11,0.1); display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; font-size: 1.5rem; }
.card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; }
.card p { color: #9ca3af; font-size: 0.9375rem; line-height: 1.6; }

/* STATS */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; text-align: center; }
.stat-num { font-size: 3rem; font-weight: 800; color: #f59e0b; }
.stat-label { color: #9ca3af; font-size: 0.875rem; margin-top: 0.5rem; }

/* BUNKER MODELS */
.model-tabs { display: flex; gap: 0.5rem; justify-content: center; margin-bottom: 3rem; flex-wrap: wrap; }
.tab-btn { background: rgba(17,24,39,0.8); border: 1px solid #374151; color: #9ca3af; padding: 10px 24px; cursor: pointer; font-weight: 600; transition: all 0.2s; }
.tab-btn.active, .tab-btn:hover { background: #f59e0b; color: #000; border-color: #f59e0b; }
.model-card { display: none; }
.model-card.active { display: grid; gap: 3rem; }
@media (min-width: 768px) { .model-card.active { grid-template-columns: 1fr 1fr; } }
.model-img { border-radius: 8px; overflow: hidden; border: 1px solid #374151; }
.model-img img { width: 100%; height: 350px; object-fit: cover; }
.model-price { font-size: 2rem; font-weight: 800; color: #f59e0b; margin: 1rem 0; }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 2rem; }
.feature-list li { display: flex; align-items: center; gap: 10px; color: #d1d5db; }
.feature-list li::before { content: '✓'; width: 20px; height: 20px; background: rgba(245,158,11,0.2); color: #f59e0b; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; flex-shrink: 0; }

/* FORM */
.form-grid { display: grid; gap: 1.5rem; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
label { font-size: 0.875rem; font-weight: 600; color: #d1d5db; }
input, select, textarea { background: rgba(17,24,39,0.8); border: 1px solid #374151; color: #fff; padding: 10px 14px; font-size: 0.9375rem; width: 100%; outline: none; transition: border-color 0.2s; }
input:focus, select:focus, textarea:focus { border-color: #f59e0b; }
textarea { resize: vertical; min-height: 120px; }
select option { background: #111; }
.form-card { background: rgba(17,24,39,0.5); border: 1px solid #374151; padding: 2.5rem; max-width: 800px; margin: 0 auto; }

/* CTA SECTION */
.cta-box { background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(245,158,11,0.2), rgba(245,158,11,0.1)); border: 1px solid rgba(245,158,11,0.3); padding: 3rem; text-align: center; }
.cta-box h3 { font-size: 1.875rem; font-weight: 800; margin-bottom: 1rem; }
.cta-box p { color: #9ca3af; margin-bottom: 2rem; }

/* NEWS CARDS */
.news-card { background: rgba(17,24,39,0.4); border: 1px solid #1f2937; overflow: hidden; transition: border-color 0.3s; }
.news-card:hover { border-color: rgba(245,158,11,0.3); }
.news-card img { width: 100%; height: 200px; object-fit: cover; }
.news-card-body { padding: 1.5rem; }
.news-cat { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; color: #f59e0b; margin-bottom: 0.5rem; display: block; }
.news-card h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.75rem; line-height: 1.4; }
.news-card p { color: #9ca3af; font-size: 0.875rem; line-height: 1.6; }
.urgency { display: inline-block; padding: 2px 10px; font-size: 0.7rem; font-weight: 700; margin-bottom: 0.5rem; }
.urgency.critical { background: #dc2626; color: #fff; }
.urgency.high { background: #ea580c; color: #fff; }
.urgency.medium { background: #ca8a04; color: #fff; }

/* PROCESS STEPS */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }
.step { background: rgba(17,24,39,0.4); border: 1px solid #1f2937; padding: 1.5rem; }
.step-num { font-size: 2.5rem; font-weight: 800; color: rgba(245,158,11,0.2); margin-bottom: 1rem; }
.step h3 { font-weight: 700; margin-bottom: 0.5rem; }
.step p { color: #9ca3af; font-size: 0.875rem; }
.step-time { display: inline-block; background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); color: #f59e0b; padding: 2px 10px; font-size: 0.75rem; font-weight: 600; float: right; }

/* CHECKLIST */
.check-list { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.check-list li { display: flex; align-items: center; gap: 10px; color: #d1d5db; }
.check-list li::before { content: '✓'; color: #22c55e; font-weight: 800; }

/* TECH SECTION */
.tech-block { margin-bottom: 5rem; }
.tech-header { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 1.5rem; }
.tech-icon { width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; font-size: 1.75rem; }
.tech-icon.amber { background: rgba(245,158,11,0.1); }
.tech-icon.blue { background: rgba(59,130,246,0.1); }
.tech-icon.green { background: rgba(34,197,94,0.1); }
.tech-icon.purple { background: rgba(168,85,247,0.1); }
.tech-title { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.1em; }
.tech-title.amber { color: #f59e0b; }
.tech-title.blue { color: #3b82f6; }
.tech-title.green { color: #22c55e; }
.tech-title.purple { color: #a855f7; }
.tech-card { background: rgba(17,24,39,0.4); border: 1px solid #1f2937; padding: 1.5rem; transition: all 0.3s; }
.tech-card:hover { border-color: rgba(245,158,11,0.3); }
.tech-card-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; margin-bottom: 1rem; }

/* SIMULATEUR */
.sim-layout { display: grid; gap: 2rem; }
@media (min-width: 1024px) { .sim-layout { grid-template-columns: 2fr 1fr; } }
.sim-card { background: rgba(17,24,39,0.5); border: 1px solid #374151; padding: 1.5rem; margin-bottom: 1.5rem; }
.sim-card h3 { font-weight: 700; margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid #374151; }
.option-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }
.option-btn { background: rgba(17,24,39,0.6); border: 1px solid #374151; color: #9ca3af; padding: 12px 16px; cursor: pointer; text-align: left; transition: all 0.2s; display: flex; justify-content: space-between; align-items: center; font-size: 0.875rem; }
.option-btn.selected { background: rgba(245,158,11,0.15); border-color: #f59e0b; color: #fff; }
.option-btn:hover { border-color: rgba(245,158,11,0.5); color: #fff; }
.option-price { color: #f59e0b; font-weight: 700; font-size: 0.8rem; }
.sticky-summary { position: sticky; top: 100px; }
.price-display { font-size: 2.5rem; font-weight: 800; color: #f59e0b; }

/* FOOTER */
footer { background: #030712; border-top: 1px solid #1f2937; padding: 4rem 2rem; position: relative; z-index: 10; }
.footer-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 3rem; }
.footer-brand p { color: #6b7280; font-size: 0.875rem; line-height: 1.6; margin: 1rem 0; }
footer h4 { font-weight: 700; margin-bottom: 1rem; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { color: #6b7280; text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-links a:hover { color: #f59e0b; }
.footer-bottom { max-width: 1280px; margin: 3rem auto 0; padding-top: 2rem; border-top: 1px solid #1f2937; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
.footer-bottom p, .footer-bottom a { color: #6b7280; font-size: 0.875rem; text-decoration: none; }
.footer-bottom a:hover { color: #fff; }
.footer-legal { display: flex; gap: 1.5rem; }
.scroll-top { position: fixed; bottom: 2rem; right: 2rem; width: 48px; height: 48px; background: #f59e0b; color: #000; border: none; cursor: pointer; font-size: 1.25rem; display: none; z-index: 200; align-items: center; justify-content: center; }
.scroll-top.visible { display: flex; }

/* BADGES */
.tag { display: inline-block; background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); color: #f59e0b; padding: 4px 14px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; }

/* ALERT */
.alert-box { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2); padding: 1rem 1.5rem; font-size: 0.875rem; color: #93c5fd; }
.success-box { display: none; background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3); padding: 2rem; text-align: center; color: #86efac; }

@media (max-width: 640px) {
  .hero { padding: 120px 1rem 3rem; }
  section { padding: 3rem 1rem; }
  .cta-box { padding: 2rem 1.25rem; }
  .form-card { padding: 1.5rem; }
}