/* ClearAPI Landing Page — Dark Theme */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --font-sans:"Inter","Noto Sans SC",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
  --color-bg:#0a0f1e;
  --color-surface:#111827;
  --color-surface-el:#1a2340;
  --color-text:#f1f5f9;
  --color-text-muted:#94a3b8;
  --color-border:#1e293b;
  --color-accent:#22d3ee;
  --color-accent-strong:#06b6d4;
  --color-accent-glow:rgba(34,211,238,0.15);
  --radius:0.75rem;
  --container:min(100% - 2rem,72rem);
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
}

html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6;font-size:1rem;overflow-x:hidden}

/* Skip link */
.skip-link{position:absolute;top:-100%;left:1rem;padding:0.5rem 1rem;background:var(--color-accent);color:#000;border-radius:var(--radius);z-index:9999;font-weight:600}
.skip-link:focus{top:1rem}

/* Container */
.container{width:var(--container);margin:0 auto}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;background:rgba(10,15,30,0.8);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}
.site-nav{width:var(--container);margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;text-decoration:none}
.brand-logo{height:2rem;width:auto}
.nav-actions{display:flex;align-items:center;gap:1rem}
.nav-link{color:var(--color-text-muted);text-decoration:none;font-size:0.875rem;transition:color var(--transition)}
.nav-link:hover{color:var(--color-text)}
.lang-toggle{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text);padding:0.375rem 0.75rem;border-radius:var(--radius);cursor:pointer;font-size:0.8rem;font-weight:500;transition:all var(--transition)}
.lang-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}
.btn-nav{background:var(--color-accent);color:#000;padding:0.5rem 1rem;border-radius:var(--radius);text-decoration:none;font-size:0.875rem;font-weight:600;transition:all var(--transition)}
.btn-nav:hover{background:var(--color-accent-strong);transform:translateY(-1px)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;border-radius:var(--radius);text-decoration:none;font-weight:600;font-size:0.95rem;transition:all var(--transition)}
.btn-primary{background:var(--color-accent);color:#000}
.btn-primary:hover{background:var(--color-accent-strong);transform:translateY(-2px);box-shadow:0 8px 24px var(--color-accent-glow)}
.btn-ghost{background:transparent;color:var(--color-text);border:1px solid var(--color-border)}
.btn-ghost:hover{border-color:var(--color-accent);color:var(--color-accent)}
.btn-lg{padding:1rem 2rem;font-size:1.1rem}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:8rem 1rem 4rem;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-glow{position:absolute;top:20%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,var(--color-accent-glow) 0%,transparent 70%);border-radius:50%;filter:blur(80px)}
.hero-content{position:relative;z-index:1;text-align:center;max-width:48rem;margin:0 auto}
.eyebrow{color:var(--color-accent);font-size:0.875rem;font-weight:500;letter-spacing:0.05em;margin-bottom:1.5rem}
.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.15;margin-bottom:1.5rem;letter-spacing:-0.02em}
.hero-copy{color:var(--color-text-muted);font-size:clamp(1rem,2.5vw,1.25rem);max-width:36rem;margin:0 auto 2.5rem;line-height:1.7}
.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:3rem}
.trust-bar{display:flex;align-items:center;justify-content:center;gap:1.5rem;flex-wrap:wrap}
.trust-item{text-align:center}
.trust-value{display:block;font-size:1.25rem;font-weight:700;color:var(--color-accent)}
.trust-label{display:block;font-size:0.75rem;color:var(--color-text-muted);margin-top:0.25rem}
.trust-divider{width:1px;height:2rem;background:var(--color-border)}

/* Sections */
.section{padding:6rem 0}
.section-alt{background:var(--color-surface)}
.section-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;text-align:center;margin-bottom:0.75rem}
.section-subtitle{color:var(--color-text-muted);text-align:center;margin-bottom:3rem;font-size:1rem}

/* Cards */
.cards-grid{display:grid;gap:1.5rem}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--color-surface-el);border:1px solid var(--color-border);border-radius:var(--radius);padding:2rem;transition:all var(--transition)}
.card:hover{border-color:var(--color-accent);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.card-icon{width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;background:var(--color-accent-glow);border-radius:0.5rem;color:var(--color-accent);margin-bottom:1.25rem}
.card-title{font-size:1.25rem;font-weight:600;margin-bottom:0.75rem}
.card-desc{color:var(--color-text-muted);font-size:0.9rem;line-height:1.6}
.card-desc-muted{margin-top:0.5rem;font-size:0.8rem;opacity:0.7}
.model-card{text-align:center}
.model-badge{display:inline-block;font-size:0.7rem;font-weight:600;color:var(--color-accent);background:var(--color-accent-glow);padding:0.25rem 0.75rem;border-radius:2rem;margin-bottom:1rem;text-transform:uppercase;letter-spacing:0.05em}
.model-list{font-family:var(--font-mono);font-size:0.85rem;color:var(--color-text)}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-bottom:3rem}
.step-card{text-align:center;padding:2rem 1.5rem}
.step-number{display:inline-flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:50%;background:var(--color-accent);color:#000;font-weight:700;font-size:1.1rem;margin-bottom:1.25rem}
.step-title{font-size:1.1rem;font-weight:600;margin-bottom:0.5rem}
.step-desc{color:var(--color-text-muted);font-size:0.9rem}

/* Code block */
.code-block{background:#0d1117;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;max-width:40rem;margin:0 auto}
.code-header{display:flex;align-items:center;gap:0.5rem;padding:0.75rem 1rem;background:rgba(255,255,255,0.03);border-bottom:1px solid var(--color-border)}
.code-dot{width:0.6rem;height:0.6rem;border-radius:50%;background:var(--color-border)}
.code-dot:nth-child(1){background:#ff5f57}
.code-dot:nth-child(2){background:#ffbd2e}
.code-dot:nth-child(3){background:#28c840}
.code-filename{margin-left:auto;font-size:0.75rem;color:var(--color-text-muted);font-family:var(--font-mono)}
.code-body{padding:1.25rem;overflow-x:auto;font-family:var(--font-mono);font-size:0.85rem;line-height:1.7;color:#e6edf3}
.hl-kw{color:#ff7b72}
.hl-str{color:#a5d6ff}

/* Security flow */
.security-flow{display:flex;align-items:center;justify-content:center;gap:0.75rem;flex-wrap:wrap;margin-bottom:2.5rem;padding:1.5rem;background:var(--color-surface-el);border-radius:var(--radius);border:1px solid var(--color-border)}
.flow-node{padding:0.5rem 1rem;border-radius:var(--radius);background:var(--color-surface);border:1px solid var(--color-border);font-size:0.85rem;font-weight:500}
.flow-node-hl{background:var(--color-accent-glow);border-color:var(--color-accent);color:var(--color-accent)}
.flow-arrow{color:var(--color-accent);font-weight:700}
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:0.75rem}
.sec-item{display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1rem;border-radius:var(--radius);background:var(--color-surface-el);border:1px solid var(--color-border);font-size:0.9rem}
.sec-icon{font-weight:700;font-size:1rem}
.sec-positive .sec-icon{color:#22c55e}
.sec-negative .sec-icon{color:#ef4444}

/* Pricing */
.pricing-hero{text-align:center;padding:3rem;background:var(--color-surface-el);border:1px solid var(--color-border);border-radius:var(--radius);margin-bottom:2rem}
.pricing-amount{font-size:clamp(2.5rem,6vw,4rem);font-weight:800;color:var(--color-accent);margin-bottom:1rem}
.pricing-desc{color:var(--color-text-muted);font-size:1rem}
.pricing-features{display:grid;grid-template-columns:repeat(2,1fr);gap:0.75rem;max-width:36rem;margin:0 auto}
.pricing-feature{display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1rem;font-size:0.9rem}
.pf-check{color:var(--color-accent);font-weight:700}

/* CTA */
.section-cta{text-align:center;padding:6rem 0;background:linear-gradient(180deg,var(--color-surface) 0%,var(--color-bg) 100%)}
.cta-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;margin-bottom:1rem}
.cta-desc{color:var(--color-text-muted);margin-bottom:2rem;font-size:1rem}

/* Footer */
.site-footer{border-top:1px solid var(--color-border);padding:2.5rem 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-brand{font-weight:700;font-size:1.1rem}
.footer-links{display:flex;gap:1.5rem}
.footer-links a{color:var(--color-text-muted);text-decoration:none;font-size:0.85rem;transition:color var(--transition)}
.footer-links a:hover{color:var(--color-text)}
.footer-copy{color:var(--color-text-muted);font-size:0.8rem}

/* Reveal animation */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease}
[data-reveal].is-visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:768px){
  .cards-3,.steps-grid{grid-template-columns:1fr}
  .pricing-features{grid-template-columns:1fr}
  .security-flow{flex-direction:column}
  .flow-arrow{transform:rotate(90deg)}
  .trust-bar{flex-direction:column;gap:1rem}
  .trust-divider{width:3rem;height:1px}
  .footer-inner{flex-direction:column;text-align:center}
  .hero{min-height:auto;padding:7rem 1rem 3rem}
}
@media(max-width:480px){
  .nav-link{display:none}
  .hero-title{font-size:1.75rem}
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}