/* ============================================
   SitePilot — Clinical Trial Site Activation AI
   ============================================ */

:root {
  --bg: #080c10;
  --bg-2: #0d1117;
  --bg-3: #111820;
  --surface: #0f1822;
  --border: #1a2a3a;
  --fg: #e8edf2;
  --fg-2: #8a9aaf;
  --fg-3: #4a5e75;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-glow: rgba(0, 212, 170, 0.25);
  --warn: #f59e0b;
  --warm-bg: #120e06;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Sora', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Nav ---- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 40px;
  height: 60px;
  display: flex;
  align-items: center;
  background: rgba(8, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-mark {
  font-size: 18px;
  color: var(--accent);
  line-height: 1;
}
.logo-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  color: var(--fg-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  padding: 120px 40px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,212,170,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(0,180,220,0.03) 0%, transparent 60%);
  pointer-events: none;
}
/* Grid overlay */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.25;
  pointer-events: none;
}
.hero-eyebrow {
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.eyebrow-tag {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0,212,170,0.2);
  padding: 5px 14px;
  border-radius: 20px;
}
.hero-headline {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-2);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 52px;
  position: relative;
  z-index: 1;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 60px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
  position: relative;
  z-index: 1;
}
.stat {
  padding: 24px 36px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-num {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
  font-family: 'DM Mono', monospace;
}
.stat-label {
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: 'DM Mono', monospace;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
  flex-shrink: 0;
}
.hero-metric-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  width: 100%;
  max-width: 880px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--border);
  position: relative;
  z-index: 1;
}
.metric-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 28px 28px;
  background: var(--surface);
}
.metric-icon {
  font-size: 16px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.metric-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}
.metric-desc {
  font-size: 12px;
  color: var(--fg-3);
  line-height: 1.5;
}

/* ---- Manifesto ---- */
.manifesto {
  padding: 100px 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.manifesto-inner {
  max-width: 900px;
  margin: 0 auto;
}
.manifesto-label {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.manifesto-text {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  line-height: 1.45;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.manifesto-quote-block {
  margin-top: 48px;
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.quote-line {
  width: 2px;
  height: 40px;
  background: var(--accent);
  border-radius: 1px;
  margin-bottom: 4px;
}
.manifesto-quote-block blockquote {
  font-size: 17px;
  font-style: italic;
  color: var(--fg-2);
  font-weight: 400;
}
.manifesto-quote-block cite {
  font-size: 12px;
  color: var(--fg-3);
  font-style: normal;
  font-family: 'DM Mono', monospace;
}

/* ---- Features ---- */
.features {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.features-label {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 48px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
}
.feature-card {
  background: var(--surface);
  padding: 40px 36px;
  position: relative;
  transition: background 0.2s;
}
.feature-card:hover {
  background: #131d28;
}
.feature-card--primary {
  grid-column: span 1;
}
.feature-icon {
  font-size: 20px;
  color: var(--accent);
  margin-bottom: 20px;
}
.feature-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 13px;
  color: var(--fg-2);
  line-height: 1.65;
}

/* ---- Pipeline ---- */
.pipeline {
  padding: 100px 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.pipeline-header {
  max-width: 1200px;
  margin: 0 auto 64px;
}
.pipeline-label {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.pipeline-title {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  max-width: 700px;
  line-height: 1.25;
}
.pipeline-steps {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.pipeline-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  position: relative;
}
.pipeline-step:last-child {
  border-bottom: none;
}
.step-num {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 4px;
}
.step-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.step-desc {
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.7;
  max-width: 620px;
}
.step-connector {
  display: none;
}

/* ---- Closing ---- */
.closing {
  padding: 120px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.closing::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(0,212,170,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.closing-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}
.closing-tag {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.closing-headline {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--fg);
  line-height: 1.1;
  margin-bottom: 24px;
}
.closing-sub {
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.7;
  margin-bottom: 40px;
}
.closing-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.closing-tag-item {
  font-size: 11px;
  font-family: 'DM Mono', monospace;
  color: var(--fg-3);
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

/* ---- Footer ---- */
.site-footer {
  padding: 48px 40px;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 7px;
}
.footer-logo-mark {
  font-size: 16px;
  color: var(--accent);
}
.footer-logo-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
}
.footer-tagline {
  font-size: 13px;
  color: var(--fg-2);
}
.footer-meta {
  font-size: 11px;
  color: var(--fg-3);
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.04em;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  .hero-metric-band {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    flex-direction: column;
  }
  .stat-divider {
    width: 100%;
    height: 1px;
  }
}
@media (max-width: 600px) {
  .hero {
    padding: 100px 24px 60px;
  }
  .hero-headline {
    font-size: 36px;
  }
  .features, .manifesto, .pipeline, .closing {
    padding: 70px 24px;
  }
  .site-nav {
    padding: 0 24px;
  }
}