/* ========================================
   SENTINEL — Dark Surveillance Aesthetic
   ======================================== */

:root {
  --bg-primary: #080810;
  --bg-secondary: #0c0c18;
  --bg-card: #10101e;
  --bg-card-hover: #14142a;
  --amber: #e8a317;
  --amber-dim: #b8811a;
  --amber-glow: rgba(232, 163, 23, 0.15);
  --amber-glow-strong: rgba(232, 163, 23, 0.25);
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --border: rgba(232, 163, 23, 0.1);
  --border-bright: rgba(232, 163, 23, 0.2);
  --success: #4ade80;
  --danger: #f87171;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Fraunces', Georgia, serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(8,8,16,0.95) 0%, transparent 100%);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.nav-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 0 48px;
  padding-top: 80px;
  gap: 48px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(232,163,23,0.03) 0%, transparent 65%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  margin-bottom: 24px;
}

.eyebrow-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  background: rgba(232, 163, 23, 0.08);
  border: 1px solid rgba(232, 163, 23, 0.2);
  padding: 6px 14px;
  border-radius: 2px;
}

.hero-headline {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(52px, 6vw, 88px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-lede {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 48px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 32px;
}

.meta-stat { display: flex; flex-direction: column; gap: 4px; }
.meta-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: -0.02em;
}
.meta-desc {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.meta-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.radar-container {
  position: relative;
  width: 380px;
  height: 380px;
}

.radar-svg {
  width: 100%;
  height: 100%;
}

.radar-sweep {
  transform-origin: 200px 200px;
  animation: radar-spin 6s linear infinite;
}

@keyframes radar-spin {
  from { transform: rotate(-5deg); }
  to { transform: rotate(355deg); }
}

.radar-label {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.radar-coords, .radar-range {
  font-family: 'Space Grotesk', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--amber);
  opacity: 0.5;
  text-transform: uppercase;
}

/* ---- WATCH SECTION ---- */
.watch {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
}

.watch-header {
  margin-bottom: 64px;
}

.watch-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.watch-subtitle {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 300;
  font-style: italic;
  color: var(--text-secondary);
}

.watch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.watch-card {
  background: var(--bg-card);
  padding: 40px 36px;
  position: relative;
  transition: background 0.2s;
}

.watch-card:hover {
  background: var(--bg-card-hover);
}

.watch-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.watch-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.watch-card-desc {
  font-family: 'Fraunces', serif;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ---- SIGNALS SECTION ---- */
.signals {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.signals-badge {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bg-primary);
  background: var(--amber);
  padding: 5px 12px;
  border-radius: 2px;
  display: inline-block;
  margin-bottom: 24px;
}

.signals-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 20px;
}

.signals-body {
  font-family: 'Fraunces', serif;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.signal-steps { display: flex; flex-direction: column; gap: 0; }

.step {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--amber);
  opacity: 0.6;
  width: 28px;
  flex-shrink: 0;
  padding-top: 3px;
}

.step-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.step-desc {
  font-family: 'Fraunces', serif;
  font-size: 14px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Alert demos */
.signals-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 80px;
}

.alert-demo {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-left: 3px solid var(--amber);
  padding: 20px 24px;
  position: relative;
}

.alert-demo--secondary {
  opacity: 0.7;
  border-left-color: var(--amber-dim);
}

.alert-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.alert-status {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse-dot 2s ease-in-out infinite;
}

.alert-demo--secondary .alert-status {
  background: var(--amber-dim);
}

.alert-time {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.alert-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.alert-body {
  font-family: 'Fraunces', serif;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.alert-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.alert-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  background: rgba(232, 163, 23, 0.08);
  border: 1px solid rgba(232, 163, 23, 0.15);
  padding: 3px 8px;
  border-radius: 2px;
}

/* ---- DIFFERENCE SECTION ---- */
.difference {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
}

.diff-header {
  margin-bottom: 64px;
}

.diff-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.diff-subtitle {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 300;
  font-style: italic;
  color: var(--text-secondary);
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}

.diff-col { padding: 40px; }

.diff-col-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.diff-col-label--old { color: var(--text-muted); }
.diff-col-label--new { color: var(--amber); }

.diff-list { list-style: none; display: flex; flex-direction: column; gap: 20px; }

.diff-item {
  font-family: 'Fraunces', serif;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.diff-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
  margin-top: 1px;
}

.diff-icon--bad { color: var(--text-muted); }
.diff-icon--good { color: var(--amber); }

/* ---- CLOSING ---- */
.closing {
  padding: 120px 48px 160px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.closing-ring {
  width: 120px;
  height: 120px;
  animation: ring-pulse 4s ease-in-out infinite;
}

.closing-ring svg {
  width: 100%;
  height: 100%;
}

@keyframes ring-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

.closing-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.3;
}

.closing-body {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ---- FOOTER ---- */
.footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.footer-tagline {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 120px;
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero-visual { display: none; }

  .watch { padding: 80px 24px; }
  .watch-grid { grid-template-columns: 1fr; }

  .signals {
    grid-template-columns: 1fr;
    padding: 80px 24px;
    gap: 40px;
  }

  .signals-right { padding-top: 0; }

  .difference { padding: 80px 24px; }
  .diff-grid { grid-template-columns: 1fr; }

  .closing { padding: 80px 24px 120px; }

  .footer {
    flex-direction: column;
    gap: 12px;
    padding: 32px 24px;
    text-align: center;
  }

  .nav { padding: 20px 24px; }

  .hero-meta { gap: 20px; }
}

@media (max-width: 600px) {
  .hero-headline { font-size: 44px; }
  .meta-number { font-size: 22px; }
}