/* ============================================
   AutoStack — B2B AI Automation Agency
   Theme: Industrial Precision
   Fonts: Syne (display) + DM Sans (body)
   ============================================ */

:root {
  --bg: #0d0d0f;
  --bg-surface: #141416;
  --bg-elevated: #1c1c1f;
  --amber: #e8a420;
  --amber-dim: rgba(232, 164, 32, 0.12);
  --amber-border: rgba(232, 164, 32, 0.2);
  --green: #34d399;
  --text-primary: #f5f5f0;
  --text-secondary: #9a9a8e;
  --text-muted: #5a5a52;
  --border: rgba(255,255,255,0.07);
  --border-strong: rgba(255,255,255,0.12);
}

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

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

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,13,15,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* HERO */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px 64px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}
.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero-headline {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 460px;
  margin-bottom: 40px;
}
.hero-trust {
  display: flex;
  align-items: stretch;
  gap: 24px;
}
.trust-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  max-width: 130px;
  line-height: 1.4;
}
.trust-divider {
  width: 1px;
  background: var(--border-strong);
}

/* HERO VISUAL — Automation Diagram */
.hero-visual {
  padding-top: 8px;
}
.automation-diagram {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  overflow: hidden;
}
.diagram-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.diagram-dots {
  display: flex;
  gap: 6px;
}
.diagram-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}
.diagram-dots span:first-child { background: #ff5f57; }
.diagram-dots span:nth-child(2) { background: #febc2e; }
.diagram-dots span:last-child { background: #28c840; }
.diagram-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.diagram-body {
  padding: 24px 20px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.workflow-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.workflow-step.step-inbound { border-color: var(--amber-border); background: var(--amber-dim); }
.step-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  flex-shrink: 0;
}
.ai-icon { background: rgba(232,164,32,0.15); color: var(--amber); }
.action-icon { background: rgba(52,211,153,0.12); color: var(--green); }
.step-text { flex: 1; }
.step-title {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.step-sub { font-size: 0.7rem; color: var(--text-muted); }
.step-badge {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}
.badge-green { background: rgba(52,211,153,0.15); color: var(--green); }
.badge-amber { background: var(--amber-dim); color: var(--amber); }
.workflow-arrow {
  display: flex;
  justify-content: center;
  color: var(--text-muted);
  padding: 2px 0;
}
.diagram-metric {
  margin: 20px 20px 24px;
  padding: 16px 20px;
  border-radius: 10px;
  background: var(--amber-dim);
  border: 1px solid var(--amber-border);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.metric-val {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}
.metric-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* SECTION SHARED */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber);
  margin-bottom: 16px;
}
.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* THE STACK */
.stack {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px;
}
.stack-header {
  margin-bottom: 48px;
  max-width: 600px;
}
.stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}
.stack-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.stack-card:hover {
  border-color: var(--amber-border);
  transform: translateY(-2px);
}
.stack-card-wide {
  grid-column: 2;
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--amber-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  margin-bottom: 20px;
}
.card-title {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}
.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}
.card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card-features li {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
}
.card-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
}
.stack-cta {
  margin-top: 40px;
}
.cta-box {
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 28px 32px;
  background: var(--bg-surface);
}
.cta-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* OUTCOMES */
.outcomes {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px 80px;
}
.outcomes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.outcomes-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 24px 0 32px;
}
.outcome-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.outcome-pill {
  font-size: 0.75rem;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  padding: 6px 14px;
}
.metric-block {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.metric-block:last-child { border-bottom: none; }
.metric-number {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.metric-label {
  font-size: 0.8rem;
  color: var(--amber);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.metric-detail {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* MANIFESTO */
.manifesto {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.manifesto-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 32px;
}
.manifesto-quote {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.55;
  letter-spacing: -0.01em;
  max-width: 800px;
  margin: 16px 0 0;
}
.manifesto-divider {
  width: 60px;
  height: 2px;
  background: var(--amber);
  margin: 40px 0;
}
.manifesto-points {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 700px;
}
.m-point {
  display: flex;
  align-items: baseline;
  gap: 20px;
}
.m-num {
  font-family: 'Syne', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}
.m-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* CLOSING */
.closing {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px;
}
.closing-inner {}
.closing-stat-row {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 48px;
}
.closing-stat {
  flex: 1;
  padding: 32px 24px;
  text-align: center;
}
.cs-num {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
}
.cs-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.closing-divider {
  width: 1px;
  height: 60px;
  background: var(--border-strong);
}
.closing-statement {
  max-width: 700px;
}
.closing-statement p {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.footer-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}
.footer-meta span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ============================================
   NAV LINKS
   ============================================ */
.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-dash-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: color 0.2s, border-color 0.2s;
}
.nav-dash-link:hover { color: var(--text-primary); border-color: var(--border-strong); }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .hero { padding: 48px 20px 40px; }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual { display: none; }

  .stack { padding: 60px 20px; }
  .stack-grid {
    grid-template-columns: 1fr;
  }
  .stack-card-wide { grid-column: auto; }

  .outcomes { padding: 0 20px 60px; }
  .outcomes-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .manifesto-inner { padding: 56px 20px; }

  .closing { padding: 60px 20px; }
  .closing-stat-row {
    flex-direction: column;
  }
  .closing-divider {
    width: 60px;
    height: 1px;
  }
  .closing-stat { padding: 20px 0; }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .footer-meta { align-items: flex-start; }

  .hero-trust {
    flex-direction: column;
    gap: 16px;
  }
  .trust-divider { display: none; }
}

@media (max-width: 480px) {
  .nav-inner { padding: 14px 20px; }
  .stat-num { font-size: 1.4rem; }
  .metric-number { font-size: 2rem; }
  .cs-num { font-size: 2rem; }
}