/* =====================
   CLERB MOTORS THEME
   ===================== */

:root {
  --bg: #08080d;
  --bg-alt: #0e0e15;
  --surface: #141420;
  --border: #1e1e2a;
  --fg: #f0ece4;
  --fg-muted: #7a7580;
  --accent: #f59e0b;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --accent-glow: rgba(245, 158, 11, 0.3);
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Fira Mono', monospace;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --max-w: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* =====================
   NAV
   ===================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-8);
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 13, 0.85);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  color: var(--fg);
}
.nav-logo-accent { color: var(--accent); }
.nav-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
}

/* =====================
   HERO
   ===================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--space-24) var(--space-8) var(--space-16);
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 65%);
  opacity: 0.4;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-8);
}
.hero-label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero-headline {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  color: var(--fg);
}
.hero-headline br { display: block; }
.hero-sub {
  font-size: 1.125rem;
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: var(--space-12);
}
.hero-sub em { color: var(--accent); font-style: normal; }
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.hero-stat { display: flex; flex-direction: column; gap: 2px; }
.hero-stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
}
.hero-stat-label {
  font-size: 0.7rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}
.hero-accent-shapes {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.hero-ring {
  width: 600px;
  height: 600px;
  border-radius: 50%;
  border: 1px solid var(--border);
  position: absolute;
  right: -200px;
  top: 50%;
  transform: translateY(-50%);
}
.hero-ring-2 {
  width: 400px;
  height: 400px;
  border-radius: 50%;
  border: 1px solid rgba(245,158,11,0.08);
  position: absolute;
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
}

/* =====================
   PIPELINE
   ===================== */
.pipeline {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-24) var(--space-8);
}
.pipeline-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.pipeline-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-mono);
  margin-bottom: var(--space-2);
}
.pipeline-sub {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--space-12);
  color: var(--fg);
}
.pipeline-steps {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.pipeline-step {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-8);
  position: relative;
  border-radius: 2px;
}
.pipeline-step-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}
.pipeline-step-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--fg);
}
.pipeline-step-body p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.7;
}
.pipeline-math {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-6) var(--space-8);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.pipeline-math-row {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.pipe { color: var(--accent); }
.pipeline-math-result {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
}

/* =====================
   FEATURES
   ===================== */
.features {
  padding: var(--space-24) var(--space-8);
}
.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-6);
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-8);
  border-radius: 2px;
}
.feature-card-accent {
  border-color: rgba(245,158,11,0.3);
  background: linear-gradient(135deg, var(--surface), rgba(245,158,11,0.03));
}
.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: var(--space-6);
}
.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--fg);
}
.feature-card p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.feature-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 10px;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  border-radius: 2px;
}
.feature-tag-gold {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* =====================
   BRAND
   ===================== */
.brand {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-24) var(--space-8);
}
.brand-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.brand-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.brand-headline {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  max-width: 640px;
  margin-bottom: var(--space-6);
  color: var(--fg);
}
.brand-body {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.8;
  margin-bottom: var(--space-12);
}
.brand-visual {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.brand-block {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-6) var(--space-8);
  border-radius: 2px;
  flex: 1;
  min-width: 200px;
}
.brand-block-gold {
  border-color: rgba(245,158,11,0.3);
  background: linear-gradient(135deg, var(--surface), rgba(245,158,11,0.05));
}
.brand-block-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--fg-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.brand-block-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--fg);
}
.brand-block-desc {
  font-size: 0.8rem;
  color: var(--fg-muted);
}
.brand-arrow { color: var(--accent); flex-shrink: 0; }

/* =====================
   CLOSING
   ===================== */
.closing {
  padding: var(--space-24) var(--space-8);
}
.closing-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}
.closing-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto var(--space-12);
}
.closing-headline {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  color: var(--fg);
}
.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 480px;
  margin: 0 auto var(--space-12);
  line-height: 1.8;
}
.closing-tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
}
.closing-tagline-divider { color: var(--border); }

/* =====================
   FOOTER
   ===================== */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-8);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--fg-muted);
}
.footer-logo-accent { color: var(--accent); }
.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 900px) {
  .pipeline-steps { grid-template-columns: 1fr; }
  .features-inner { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; }
  .pipeline-math { flex-direction: column; gap: var(--space-4); align-items: flex-start; }
  .brand-visual { flex-direction: column; }
  .brand-arrow { transform: rotate(90deg); }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
  :root { --space-8: 1.25rem; --space-16: 3rem; }
  .hero { padding-top: var(--space-16); }
  .nav { padding: var(--space-3) var(--space-4); }
  .hero-stats { gap: var(--space-6); }
}