/* ============================================================================
   AnthroSynth Landing Page — Premium Design
   ============================================================================ */
:root{--pri:#6366F1;--pri-dark:#4338CA;--pri-light:#818CF8;--bg:#0B0F1A;--bg2:#111827;--card:#1F2937;--border:#374151;--text:#F9FAFB;--text2:#9CA3AF;--text3:#6B7280;--font:'Inter',system-ui,sans-serif;}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;}
body{font-family:var(--font);color:var(--text);background:var(--bg);font-size:15px;line-height:1.6;overflow-x:hidden;}

/* ── Nav ──────────────────────────────────────────────── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(16px);background:rgba(11,15,26,0.8);border-bottom:1px solid rgba(255,255,255,0.06);}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;}
.nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;font-size:17px;}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--pri);display:flex;align-items:center;justify-content:center;}
.nav-links{display:flex;gap:32px;}
.nav-links a{color:var(--text2);text-decoration:none;font-size:14px;font-weight:500;transition:color .2s;}
.nav-links a:hover{color:var(--text);}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--pri);color:white;border-radius:8px;text-decoration:none;font-size:13px;font-weight:600;transition:background .2s;}
.nav-cta:hover{background:var(--pri-dark);}

/* ── Hero ─────────────────────────────────────────────── */
.hero{position:relative;padding:140px 24px 80px;overflow:hidden;}
.hero-glow{position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:800px;height:600px;background:radial-gradient(ellipse,rgba(99,102,241,0.15) 0%,transparent 70%);pointer-events:none;}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:64px 64px;pointer-events:none;}
.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:1;}
.hero-chip{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(99,102,241,0.12);border:1px solid rgba(99,102,241,0.25);border-radius:999px;font-size:12px;font-weight:600;color:var(--pri-light);margin-bottom:24px;letter-spacing:.02em;}
.chip-dot{width:6px;height:6px;border-radius:50%;background:var(--pri-light);animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.4;}}
.hero h1{font-size:48px;font-weight:800;line-height:1.15;letter-spacing:-.03em;margin-bottom:20px;}
.hero-gradient{background:linear-gradient(135deg,#818CF8,#C084FC,#F472B6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.hero-desc{font-size:17px;line-height:1.7;color:var(--text2);max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;gap:12px;margin-bottom:32px;}
.btn-hero{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:var(--pri);color:white;border-radius:10px;text-decoration:none;font-size:15px;font-weight:600;transition:all .2s;box-shadow:0 4px 20px rgba(99,102,241,0.3);}
.btn-hero:hover{background:var(--pri-dark);transform:translateY(-1px);box-shadow:0 8px 30px rgba(99,102,241,0.4);}
.btn-hero-outline{display:inline-flex;align-items:center;padding:14px 28px;background:transparent;color:var(--text);border:1px solid var(--border);border-radius:10px;text-decoration:none;font-size:15px;font-weight:500;transition:all .2s;}
.btn-hero-outline:hover{border-color:var(--text2);background:rgba(255,255,255,0.03);}
.hero-proof{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text3);}
.proof-avatars{display:flex;}
.proof-av{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:white;margin-right:-8px;border:2px solid var(--bg);}

/* Hero Visual */
.hero-visual{position:relative;}
.hv-window{background:var(--bg2);border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 16px 64px rgba(0,0,0,0.4);}
.hv-titlebar{padding:10px 14px;display:flex;gap:6px;background:rgba(255,255,255,0.03);border-bottom:1px solid var(--border);}
.hv-titlebar span{width:10px;height:10px;border-radius:50%;background:var(--border);}
.hv-titlebar span:nth-child(1){background:#EF4444;}
.hv-titlebar span:nth-child(2){background:#F59E0B;}
.hv-titlebar span:nth-child(3){background:#10B981;}
.hv-body{display:grid;grid-template-columns:180px 1fr;min-height:300px;}
.hv-sidebar{border-right:1px solid var(--border);padding:12px 0;}
.hv-nav-item{padding:8px 16px;font-size:12px;color:var(--text2);display:flex;align-items:center;gap:8px;cursor:default;}
.hv-nav-item.active{background:rgba(99,102,241,0.1);color:var(--text);border-right:2px solid var(--pri);}
.hv-dot{width:8px;height:8px;border-radius:50%;}
.hv-dot.green{background:#10B981;}.hv-dot.blue{background:#3B82F6;}.hv-dot.purple{background:#8B5CF6;}.hv-dot.orange{background:#F59E0B;}
.hv-chat{padding:16px;display:flex;flex-direction:column;gap:12px;}
.hv-msg{font-size:12px;line-height:1.6;color:var(--text2);padding:10px 14px;border-radius:8px;background:rgba(255,255,255,0.03);}
.hv-msg.interviewer{border-left:2px solid var(--pri);background:rgba(99,102,241,0.06);}
.hv-msg.interviewer strong{color:var(--pri-light);}
.hv-msg.participant strong{color:#10B981;}
.hv-typing{display:flex;gap:4px;padding:8px 14px;}
.hv-typing span{width:6px;height:6px;border-radius:50%;background:var(--text3);animation:typing 1.4s infinite;}
.hv-typing span:nth-child(2){animation-delay:.2s;}
.hv-typing span:nth-child(3){animation-delay:.4s;}
@keyframes typing{0%,60%,100%{opacity:.3;transform:translateY(0);}30%{opacity:1;transform:translateY(-4px);}}
.hv-float{position:absolute;padding:12px 16px;background:var(--card);border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;gap:10px;font-size:12px;box-shadow:0 8px 32px rgba(0,0,0,0.3);animation:float 6s ease-in-out infinite;}
.hv-float strong{color:var(--text);display:block;margin-bottom:2px;font-size:12px;}
.hv-float span{color:var(--text3);font-size:11px;}
.hv-float-icon{font-size:20px;}
.hv-float-1{top:-20px;right:-20px;animation-delay:0s;}
.hv-float-2{bottom:20px;left:-30px;animation-delay:3s;}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}

/* ── Stats Bar ────────────────────────────────────────── */
.stats-bar{border-top:1px solid rgba(255,255,255,0.06);border-bottom:1px solid rgba(255,255,255,0.06);background:rgba(255,255,255,0.02);}
.stats-inner{max-width:1000px;margin:0 auto;padding:32px 24px;display:flex;align-items:center;justify-content:center;gap:48px;}
.stat{text-align:center;}
.stat-num{display:block;font-size:28px;font-weight:800;color:var(--text);letter-spacing:-.02em;}
.stat-label{font-size:12px;color:var(--text3);margin-top:2px;}
.stat-div{width:1px;height:40px;background:var(--border);}

/* ── Sections ─────────────────────────────────────────── */
.section{padding:100px 24px;}
.section-alt{background:rgba(255,255,255,0.02);}
.container{max-width:1100px;margin:0 auto;}
.section-head{text-align:center;margin-bottom:56px;}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.02em;margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text2);max-width:560px;margin:0 auto;}
.section-chip{display:inline-block;padding:4px 14px;background:rgba(99,102,241,0.12);color:var(--pri-light);border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;margin-bottom:16px;}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.feature-card{padding:28px;background:var(--card);border:1px solid var(--border);border-radius:14px;transition:all .3s;}
.feature-card:hover{border-color:rgba(99,102,241,0.3);transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,0.2);}
.fc-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.feature-card h3{font-size:16px;font-weight:700;margin-bottom:8px;}
.feature-card p{font-size:13px;line-height:1.7;color:var(--text2);}

/* Steps */
.steps{max-width:600px;margin:0 auto;}
.step{display:flex;gap:20px;align-items:flex-start;}
.step-num{width:40px;height:40px;border-radius:10px;background:var(--pri);color:white;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex-shrink:0;}
.step-content h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.step-content p{font-size:14px;color:var(--text2);line-height:1.6;}
.step-line{width:2px;height:32px;background:var(--border);margin-left:19px;}

/* Domains */
.domains-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
.domain-pill{padding:12px 24px;background:var(--card);border:1px solid var(--border);border-radius:999px;font-size:14px;font-weight:500;transition:all .2s;}
.domain-pill:hover{border-color:var(--pri);background:rgba(99,102,241,0.08);color:var(--pri-light);}

/* Architecture */
.arch-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.arch-card{padding:24px;background:var(--card);border:1px solid var(--border);border-radius:12px;text-align:center;transition:all .3s;}
.arch-card:hover{border-color:rgba(99,102,241,0.3);transform:translateY(-2px);}
.arch-num{width:32px;height:32px;border-radius:8px;background:rgba(99,102,241,0.15);color:var(--pri-light);display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;margin-bottom:12px;}
.arch-card h4{font-size:14px;font-weight:700;margin-bottom:6px;}
.arch-card p{font-size:12px;color:var(--text3);line-height:1.6;}

/* CTA */
.section-cta{padding:100px 24px;text-align:center;}
.cta-inner{max-width:600px;margin:0 auto;}
.section-cta h2{font-size:32px;font-weight:800;margin-bottom:12px;}
.section-cta p{font-size:16px;color:var(--text2);margin-bottom:32px;}

/* Footer */
.footer{border-top:1px solid rgba(255,255,255,0.06);padding:24px;}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;}
.footer-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;color:var(--text2);}
.footer-copy{font-size:12px;color:var(--text3);}

/* ── Responsive ───────────────────────────────────────── */
@media(max-width:900px){
    .hero-inner{grid-template-columns:1fr;text-align:center;}
    .hero h1{font-size:36px;}.hero-desc{margin:0 auto 24px;}
    .hero-actions{justify-content:center;}
    .hero-proof{justify-content:center;}
    .hero-visual{display:none;}
    .features-grid{grid-template-columns:1fr;}
    .arch-grid{grid-template-columns:repeat(2,1fr);}
    .stats-inner{flex-wrap:wrap;gap:24px;}
    .stat-div{display:none;}
    .nav-links{display:none;}
}