/* SEO token page — self-contained CSS.
 * Design tokens mirror src/dashboard/frontend/src/lib/colors.ts so the
 * SSR page looks consistent with the React dashboard.
 * Intentionally small: ~5 KB uncompressed, <1 KB after gzip. No
 * frameworks — delivered at first byte, no FOUC.
 */

:root {
  --bg: #0e1014;
  --surface: #141821;
  --raised: #191e28;
  --border: rgba(255, 255, 255, 0.05);
  --border-hi: rgba(255, 255, 255, 0.09);
  --mint: #5eda9e;
  --mint-dim: #3aae7a;
  --mint-bg: rgba(94, 218, 158, 0.05);
  --red: #e57373;
  --red-dim: #b85757;
  --red-bg: rgba(229, 115, 115, 0.05);
  --amber: #e3b04b;
  --amber-bg: rgba(227, 176, 75, 0.05);
  --purple: #a890d0;
  --purple-bg: rgba(168, 144, 208, 0.07);
  --text-1: #f1f4f9;
  --text-2: #b4bcd2;
  --text-3: #7b8396;
  --text-4: #5d6478;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--text-2);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
::selection {
  background: rgba(94, 218, 158, 0.15);
}
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.12);
}

a {
  color: inherit;
  text-decoration: none;
}
.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ── Top nav ───────────────────────────────────────────────────── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--border);
  background: rgba(14, 16, 20, 0.9);
  backdrop-filter: blur(20px) saturate(1.2);
}
.topnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topnav a.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--text-1);
  letter-spacing: -0.3px;
}
.topnav nav {
  display: flex;
  gap: 2px;
}
.topnav nav a {
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 6px;
  color: var(--text-3);
}
.topnav nav a.active {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-hi);
  font-weight: 600;
}

/* ── Layout ────────────────────────────────────────────────────── */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
.breadcrumbs {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 12px;
  font-size: 11px;
  color: var(--text-3);
}
.breadcrumbs a {
  color: var(--text-3);
}
.breadcrumbs a:hover {
  color: var(--text-2);
}
.breadcrumbs .sep {
  color: var(--text-4);
}
.breadcrumbs .current {
  color: var(--text-1);
  font-weight: 600;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 16px;
  scroll-margin-top: 72px;
}
.card-head {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.card-head::before {
  content: "";
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: var(--accent, var(--mint));
  align-self: center;
}
.card-head h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.2px;
}
.card-head .sub {
  font-size: 11px;
  color: var(--text-3);
  font-weight: 500;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--surface) 0%, var(--raised) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  margin-bottom: 16px;
}
.hero-top {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.hero-id {
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--mint), var(--red));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 800;
  font-size: 20px;
  color: var(--bg);
  letter-spacing: 0.5px;
}
.hero h1 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -0.5px;
  line-height: 1.1;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.hero-meta .sym {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.5px;
}
.chip {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}
.chip.purple {
  color: var(--purple);
  background: var(--purple-bg);
  border-color: rgba(168, 144, 208, 0.15);
  font-family: var(--mono);
}

.hero-price {
  margin-left: auto;
  text-align: right;
}
.hero-price .label {
  font-size: 10px;
  color: var(--text-3);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.hero-price .val {
  display: flex;
  align-items: baseline;
  gap: 12px;
  justify-content: flex-end;
}
.hero-price .price {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.8px;
}
.hero-price .change {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
}
.change.up { color: var(--mint); }
.change.down { color: var(--red); }

.hero-secondary {
  display: flex;
  gap: 16px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  align-items: center;
}
.hero-secondary .group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.group-label {
  font-size: 10px;
  color: var(--text-3);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.contract-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.contract-row .net {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--purple);
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--purple-bg);
}
.contract-row .addr {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-2);
  border-bottom: 1px dotted var(--border);
}
.contract-row .addr:hover {
  color: var(--text-1);
}
.ext-links {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.ext {
  padding: 3px 9px;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-3);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.ext:hover {
  color: var(--text-1);
  border-color: var(--border-hi);
}

/* Reset browser defaults that break font inheritance. ``<table>`` and
 * form controls do not inherit ``font-family`` from ``<body>`` in most
 * engines — without this, HTML tables on the SEO token page fall back
 * to the UA's serif default (Times on Chromium/Safari). */
table, th, td, button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ── Tables ────────────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
thead {
  background: rgba(255, 255, 255, 0.015);
}
th {
  padding: 10px 18px;
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
td {
  padding: 10px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  color: var(--text-2);
}
tr:last-child td { border-bottom: none; }
td.num {
  font-family: var(--mono);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
td.ex {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--text-1);
  text-transform: uppercase;
}
td.center { text-align: center; }

.tag-fut {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  color: var(--purple);
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--purple-bg);
  letter-spacing: 0.04em;
}
.tag-spot {
  display: inline-block;
  font-size: 10px;
  color: var(--text-3);
  font-weight: 500;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 9px;
  font-weight: 700;
  font-family: var(--mono);
}
.status-dot.ok {
  color: var(--mint);
  background: var(--mint-bg);
  border: 1px solid rgba(94, 218, 158, 0.15);
}
.status-dot.closed {
  color: var(--amber);
  background: var(--amber-bg);
  border: 1px solid rgba(227, 176, 75, 0.15);
}
.status-dot::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
}

/* Deposit/Withdraw matrix cell — outlined badges, fee on separate line */
.dw-cell {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  line-height: 1;
}
.dw-icons {
  display: inline-flex;
  gap: 3px;
}
.dw-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1px;
  min-width: 24px;
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--mono);
  letter-spacing: 0.03em;
  line-height: 1;
}
.dw-badge .dw-arrow {
  font-size: 10px;
  line-height: 1;
  font-weight: 800;
}
.dw-badge.ok {
  color: var(--mint);
  background: rgba(94, 218, 158, 0.08);
  border: 1px solid rgba(94, 218, 158, 0.45);
}
.dw-badge.closed {
  color: rgba(227, 120, 120, 0.8);
  background: transparent;
  border: 1px solid rgba(227, 120, 120, 0.28);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}
.dw-fee {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-4);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Live-freshness indicator for sub-2s orderbooks on the trade table. */
.age-live {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.age-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 4px rgba(94, 218, 158, 0.7);
  animation: age-live-pulse 1.4s ease-in-out infinite;
}
@keyframes age-live-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.85); }
}

/* Empty-state placeholder for the Arbitrage section. */
.arb-empty {
  padding: 14px 18px 18px;
}
.arb-empty-lede {
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.55;
}
.arb-empty-lede strong { color: var(--text-1); font-weight: 600; }
.arb-empty-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}
.arb-empty-card {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.015);
}
.arb-empty-card .label {
  display: block;
  font-size: 9.5px;
  color: var(--text-4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.arb-empty-card .val {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-1);
}
.arb-empty-card .val.mint { color: var(--mint); }
.arb-empty-card .val.red { color: var(--red); }
.arb-empty-actions {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.arb-empty-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--mint);
  background: var(--mint-bg);
  border: 1px solid rgba(94, 218, 158, 0.25);
  border-radius: 6px;
  cursor: pointer;
}
.arb-empty-btn:hover {
  background: rgba(94, 218, 158, 0.10);
  border-color: rgba(94, 218, 158, 0.4);
}
.arb-empty-note {
  margin-top: 10px;
  font-size: 11px;
  color: var(--text-4);
  font-style: italic;
}

.trade-btn {
  display: inline-block;
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 600;
  color: var(--mint);
  background: var(--mint-bg);
  border: 1px solid rgba(94, 218, 158, 0.15);
  border-radius: 4px;
}
.trade-btn:hover { filter: brightness(1.15); }

/* Arbitrage rows */
.arb-leg {
  padding: 6px 10px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.arb-leg.buy {
  background: var(--mint-bg);
  border-left: 2px solid var(--mint-dim);
}
.arb-leg.sell {
  background: var(--red-bg);
  border-left: 2px solid var(--red-dim);
}
.arb-leg .side {
  font-size: 8px;
  font-weight: 700;
  opacity: 0.65;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.arb-leg.buy .side { color: var(--mint); }
.arb-leg.sell .side { color: var(--red); }
.arb-leg .ex-name {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-1);
  text-transform: uppercase;
}
.arb-leg .price {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}
.arb-leg.buy .price { color: var(--mint-dim); }
.arb-leg.sell .price { color: var(--red-dim); }
.arb-arrow {
  text-align: center;
  color: var(--text-4);
  font-size: 14px;
  padding: 0 8px;
}
.spread-val {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 16px;
}
.spread-val.high { color: var(--mint); }
.spread-val.mid { color: var(--mint-dim); }
.spread-val.low { color: #6ab288; }

/* ── FAQ ──────────────────────────────────────────────────────── */
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-item summary {
  padding: 14px 18px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-1);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "▶";
  font-size: 9px;
  color: var(--text-4);
  transition: transform 0.2s;
}
.faq-item[open] summary::before { transform: rotate(90deg); }
.faq-item .answer {
  padding: 0 18px 16px 38px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-2);
}

/* ── About ────────────────────────────────────────────────────── */
.about-body {
  padding: 16px 18px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ── Related ──────────────────────────────────────────────────── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border);
}
.related-card {
  padding: 14px 18px;
  background: var(--surface);
  transition: background 0.12s;
  display: block;
}
.related-card:hover { background: var(--raised); }
.related-card .top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.related-card .sym {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--text-1);
  letter-spacing: 0.3px;
}
.related-card .name {
  font-size: 11px;
  color: var(--text-3);
}

/* ── Banners ─────────────────────────────────────────────────── */
.banner {
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 12.5px;
}
.banner.warn {
  background: var(--amber-bg);
  border: 1px solid rgba(227, 176, 75, 0.2);
  color: var(--amber);
}
.banner.info {
  background: rgba(125, 160, 210, 0.05);
  border: 1px solid rgba(125, 160, 210, 0.15);
  color: var(--text-2);
}

/* ── Footer ──────────────────────────────────────────────────── */
footer {
  margin-top: 30px;
  padding: 20px 0 28px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-3);
}
footer .row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
footer .disclaimer {
  margin-top: 8px;
  font-size: 10.5px;
  color: var(--text-4);
  max-width: 820px;
  line-height: 1.5;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 720px) {
  .topnav nav { display: none; }
  .hero-price { margin-left: 0; text-align: left; }
  .hero-price .val { justify-content: flex-start; }
  th, td { padding: 8px 12px; font-size: 11px; }
  .hero h1 { font-size: 22px; }
  .hero-price .price { font-size: 26px; }
}