:root {
  --bg: #0f172a;
  --bg-card: #162032;
  --bg-elevated: #1e2d42;
  --fg: #f8f7f4;
  --fg-muted: #8899aa;
  --fg-dim: #4a6080;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --teal: #00d4aa;
  --amber: #f59e0b;
  --blue: #3b82f6;
  --border: rgba(255,255,255,0.07);
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
.nav {
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  z-index: 10;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.nav-tagline {
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-tagline::before {
  content: '—';
  margin-right: 8px;
  color: var(--accent);
}

/* ── HERO ── */
.hero {
  padding: 80px 40px 100px;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 28px;
}
.hero-headline em {
  font-style: italic;
  color: var(--accent);
}
.hero-lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--fg-muted);
  max-width: 480px;
  margin-bottom: 40px;
}
.hero-radar {
  position: relative;
  width: 120px;
  height: 120px;
  display: none;
}
.radar-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 170, 0.2);
}
.radar-ring-1 { width: 40px; height: 40px; }
.radar-ring-2 { width: 80px; height: 80px; }
.radar-ring-3 { width: 120px; height: 120px; }
.radar-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.radar-blip {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-blip 2s ease-in-out infinite;
}
.radar-blip-1 { top: 10px; left: 55%; animation-delay: 0s; }
.radar-blip-2 { top: 55%; left: 10%; animation-delay: 0.7s; }
.radar-blip-3 { bottom: 15px; right: 15px; animation-delay: 1.4s; }
@keyframes pulse-blip {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}

/* HERO CARD */
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.card-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.5);
  animation: live-pulse 2s infinite;
}
@keyframes live-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0,212,170,0.6); }
  70% { box-shadow: 0 0 0 8px rgba(0,212,170,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,212,170,0); }
}
.card-title {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--fg);
  margin-bottom: 20px;
}
.card-signal {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.signal-teal { background: var(--teal); }
.signal-amber { background: var(--amber); }
.signal-blue { background: var(--blue); }
.signal-content { flex: 1; }
.signal-name {
  font-size: 13px;
  color: var(--fg);
  line-height: 1.4;
}
.signal-meta {
  font-size: 11px;
  color: var(--fg-dim);
  margin-top: 2px;
}
.card-footer {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.card-watchers {
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
}

/* ── SIGNALS SECTION ── */
.signals {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 40px;
}
.signals-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 60px;
}
.signals-title {
  font-family: var(--font-display);
  font-size: 36px;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 12px;
}
.signals-sub {
  font-size: 16px;
  color: var(--fg-muted);
}
.signals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  max-width: 1200px;
  margin: 0 auto;
  background: var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.signal-card {
  background: var(--bg-card);
  padding: 32px 28px;
  transition: background 0.2s;
}
.signal-card:hover { background: var(--bg-elevated); }
.signal-icon {
  color: var(--accent);
  margin-bottom: 16px;
}
.signal-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
}
.signal-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ── BRIEFING SECTION ── */
.briefing {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.briefing-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}
.briefing-title {
  font-family: var(--font-display);
  font-size: 36px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 20px;
}
.briefing-body {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 32px;
}
.briefing-points { display: flex; flex-direction: column; gap: 12px; }
.brief-point {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--fg-muted);
}
.brief-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* EMAIL MOCK */
.email-mock {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 13px;
}
.email-header {
  background: var(--bg-elevated);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.email-from {
  display: flex;
  align-items: center;
  gap: 10px;
}
.email-logo {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--bg);
  letter-spacing: 0;
}
.email-sender {
  font-weight: 600;
  color: var(--fg);
  display: block;
}
.email-subject {
  color: var(--fg-muted);
  font-size: 12px;
}
.email-time {
  font-size: 11px;
  color: var(--fg-dim);
}
.email-body { padding: 20px; }
.email-greeting {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 8px;
}
.email-intro {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.email-signal {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
  background: rgba(255,255,255,0.02);
}
.es-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.es-teal { background: rgba(0, 212, 170, 0.15); color: var(--teal); }
.es-amber { background: rgba(245, 158, 11, 0.15); color: var(--amber); }
.es-blue { background: rgba(59, 130, 246, 0.15); color: var(--blue); }
.es-headline {
  font-weight: 600;
  color: var(--fg);
  font-size: 13px;
  margin-bottom: 4px;
}
.es-detail { color: var(--fg-muted); font-size: 12px; line-height: 1.5; margin-bottom: 6px; }
.es-action {
  font-size: 11px;
  color: var(--accent);
  font-weight: 500;
  font-style: italic;
}

/* ── CLOSING ── */
.closing {
  padding: 100px 40px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-card) 100%);
}
.closing-inner {
  max-width: 720px;
  margin: 0 auto;
}
.closing-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 28px;
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 99px;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 20px;
}
.closing-headline em {
  font-style: italic;
  color: var(--accent);
}
.closing-sub {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ── FOOTER ── */
.footer {
  padding: 32px 40px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--fg);
}
.footer-copy {
  font-size: 13px;
  color: var(--fg-dim);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .briefing-inner { grid-template-columns: 1fr; }
  .signals-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 60px 24px 80px; }
  .signals { padding: 60px 24px; }
  .briefing { padding: 60px 24px; }
  .closing { padding: 60px 24px; }
  .nav { padding: 16px 24px; }
}
@media (max-width: 600px) {
  .signals-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}