/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #060816;
  --bg-card: #0b0d1e;
  --bg-row: #0d0f22;
  --fg: #ffffff;
  --fg-muted: #6b7394;
  --fg-dim: #3d4466;
  --green: #00ff88;
  --green-dim: rgba(0, 255, 136, 0.12);
  --border: #1a1d3a;
  --border-bright: #252a50;
}

html { font-size: 16px; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3 { font-family: 'Syne', sans-serif; font-weight: 700; line-height: 1.15; }
.mono { font-family: 'IBM Plex Mono', monospace; }

/* ===== NAVBAR ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-mark {
  font-size: 18px;
  color: var(--green);
  font-family: 'IBM Plex Mono', monospace;
}
.logo-text {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--fg-muted);
  font-family: 'IBM Plex Mono', monospace;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== HERO ===== */
.hero {
  padding: 80px 48px 64px;
  max-width: 900px;
  margin: 0 auto;
}
.hero-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid rgba(0, 255, 136, 0.2);
  display: inline-block;
  padding: 6px 12px;
  border-radius: 3px;
  margin-bottom: 28px;
}
.hero-headline {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 48px;
  line-height: 1.65;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  width: fit-content;
}
.stat {
  padding: 20px 32px;
  background: var(--bg-card);
}
.stat-value {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 28px;
  font-weight: 500;
  color: var(--green);
  letter-spacing: -0.02em;
}
.stat-label {
  display: block;
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 4px;
  letter-spacing: 0.02em;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

/* ===== SPREAD TICKER ===== */
.spread-ticker {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 48px;
  overflow: hidden;
}
.ticker-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 12px;
}
.ticker-track {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.ticker-track::-webkit-scrollbar { display: none; }
.ticker-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-right: 10px;
  white-space: nowrap;
  flex-shrink: 0;
  background: var(--bg);
}
.ticker-item.green {
  border-color: rgba(0, 255, 136, 0.25);
  background: rgba(0, 255, 136, 0.04);
}
.pair {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg);
}
.exchanges {
  font-size: 11px;
  color: var(--fg-muted);
}
.spread {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--green);
}

/* ===== OPPORTUNITIES ===== */
.opportunities {
  padding: 80px 48px;
  max-width: 900px;
  margin: 0 auto;
}
.opp-header {
  margin-bottom: 48px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-title.centered { text-align: center; }
.section-sub {
  font-size: 16px;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.65;
}
.section-sub.centered { margin: 0 auto; }

.opp-table {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.opp-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr 1.2fr;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-family: 'IBM Plex Mono', monospace;
}
.opp-row:last-child { border-bottom: none; }
.opp-row.opp-head {
  background: var(--bg-card);
  color: var(--fg-dim);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.opp-row.opp-dim { opacity: 0.5; }
.market { color: var(--fg); font-weight: 500; }
.buy, .sell { color: var(--fg-muted); }
.spread-val { color: var(--green); font-weight: 500; }
.net.green { color: var(--green); }
.net.dim { color: var(--fg-dim); font-size: 11px; }

.opp-note {
  font-size: 12px;
  color: var(--fg-dim);
  margin-top: 16px;
  font-style: italic;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
  padding: 80px 48px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how-it-works .section-title {
  text-align: center;
  margin-bottom: 56px;
}
.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
  gap: 0;
}
.step {
  flex: 1;
  max-width: 260px;
  text-align: center;
  padding: 0 20px;
}
.step-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  display: block;
}
.step-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.step-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
}
.step-connector {
  width: 60px;
  height: 1px;
  background: var(--border-bright);
  margin-top: 28px;
  flex-shrink: 0;
}

/* ===== FEATURES ===== */
.features {
  padding: 80px 48px;
  max-width: 900px;
  margin: 0 auto;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.feature {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
}
.feature-icon {
  color: var(--green);
  margin-bottom: 20px;
}
.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 80px 48px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}
.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.closing-text {
  font-family: 'Syne', sans-serif;
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--fg-muted);
  margin-bottom: 24px;
}
.closing-text:last-child {
  color: var(--fg);
}

/* ===== FOOTER ===== */
.footer {
  padding: 32px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 16px;
}
.footer-tagline {
  font-size: 12px;
  color: var(--fg-dim);
}
.footer-note {
  font-size: 11px;
  color: var(--fg-dim);
  text-align: right;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .navbar, .spread-ticker, .opportunities, .features, .closing, .footer { padding-left: 24px; padding-right: 24px; }
  .hero { padding: 48px 24px 40px; }
  .how-it-works { padding: 48px 24px; }
  .hero-stats { flex-direction: column; width: 100%; }
  .stat-divider { width: 100%; height: 1px; }
  .steps { flex-direction: column; align-items: center; gap: 32px; }
  .step-connector { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .opp-row { grid-template-columns: 1fr 1fr 1fr; }
  .opp-row .buy, .opp-row .sell { display: none; }
  .footer { flex-direction: column; align-items: flex-start; }
  .footer-note { text-align: left; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .stat { padding: 16px 20px; }
  .stat-value { font-size: 22px; }
}