/* FutureChain Explorer — minimal dark theme, no framework. */

:root {
  --bg: #0b1118;
  --bg-card: #131b25;
  --bg-card-hover: #18222e;
  --border: #1f2a37;
  --text: #d6dee7;
  --text-dim: #8a98a8;
  --text-faint: #5a6878;
  --accent: #4fc3a1;        /* teal — FutureChain compliance-first vibe */
  --accent-dim: #2f8a73;
  --warning: #e6b455;
  --danger: #d96a6a;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: #6cdcb9; text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.92em; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { border-bottom: 1px solid var(--border); background: rgba(11, 17, 24, 0.85); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; color: var(--text); }
.brand:hover { text-decoration: none; color: var(--accent); }
.brand-mark { color: var(--accent); font-size: 22px; line-height: 1; }
.nav { display: flex; gap: 22px; font-size: 14px; }
.nav a { color: var(--text-dim); }
.nav a:hover { color: var(--text); text-decoration: none; }

/* Hero search */
.hero { padding: 48px 0 24px; border-bottom: 1px solid var(--border); }
.searchbar { display: flex; gap: 10px; max-width: 880px; margin: 0 auto; }
.searchbar input {
  flex: 1; background: var(--bg-card); border: 1px solid var(--border); color: var(--text);
  padding: 14px 18px; border-radius: 8px; font-size: 15px; outline: none; font-family: var(--mono);
}
.searchbar input:focus { border-color: var(--accent); }
.searchbar button {
  background: var(--accent); color: #0b1118; border: 0; padding: 0 22px; border-radius: 8px;
  font-weight: 600; cursor: pointer; font-size: 15px;
}
.searchbar button:hover { background: #6cdcb9; }
.hint { text-align: center; color: var(--text-faint); margin: 14px 0 0; font-size: 13px; }
.hint code { background: var(--bg-card); padding: 2px 8px; border-radius: 4px; margin: 0 4px; color: var(--text-dim); }

/* Main */
main { padding: 32px 0 48px; min-height: 60vh; }
.loading { color: var(--text-faint); text-align: center; padding: 60px 0; }

/* Network info cards (homepage) */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 32px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px 20px;
}
.card-label { color: var(--text-faint); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.card-value { font-size: 22px; font-weight: 600; margin-top: 6px; font-family: var(--mono); color: var(--text); }
.card-sub { color: var(--text-dim); font-size: 12px; margin-top: 4px; }

/* Tables */
.section-title { font-size: 18px; font-weight: 600; margin: 0 0 16px; display: flex; justify-content: space-between; align-items: center; }
.section-title .meta { color: var(--text-faint); font-size: 13px; font-weight: normal; }

.tbl { width: 100%; border-collapse: collapse; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.tbl th, .tbl td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.tbl th { color: var(--text-faint); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; background: rgba(0,0,0,0.15); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tr:hover td { background: var(--bg-card-hover); }
.tbl td.mono, .tbl td .truncate { font-family: var(--mono); font-size: 13px; }

.truncate { display: inline-block; max-width: 100%; vertical-align: middle; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.full-mono { font-family: var(--mono); word-break: break-all; }

/* Detail view */
.detail-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 24px 28px; margin-bottom: 20px; }
.detail-title { font-size: 22px; font-weight: 600; margin: 0 0 18px; word-break: break-all; }
.detail-grid { display: grid; grid-template-columns: 200px 1fr; gap: 12px 24px; align-items: start; }
.detail-grid dt { color: var(--text-faint); font-size: 13px; padding-top: 2px; }
.detail-grid dd { margin: 0; word-break: break-all; }

/* Tags + badges */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.tag-genesis { background: rgba(79, 195, 161, 0.15); color: var(--accent); }
.tag-coinbase { background: rgba(230, 180, 85, 0.15); color: var(--warning); }
.tag-tx { background: rgba(122, 162, 215, 0.15); color: #7aa2d7; }
.tag-iso { background: rgba(180, 100, 220, 0.15); color: #b464dc; }

/* Errors */
.error-card { background: rgba(217, 106, 106, 0.08); border: 1px solid rgba(217, 106, 106, 0.3); color: var(--danger); border-radius: 10px; padding: 20px; text-align: center; }

/* Footer */
.footer { border-top: 1px solid var(--border); margin-top: 60px; padding: 24px 0; color: var(--text-faint); font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-meta { display: flex; gap: 10px; }
.footer-meta code { background: var(--bg-card); padding: 2px 6px; border-radius: 4px; }
.dot { color: var(--text-faint); }

/* Smaller screens */
@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .hero { padding: 28px 0 18px; }
  .searchbar { flex-direction: column; }
  .searchbar button { padding: 12px; }
  .nav { gap: 14px; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-grid dt { padding-top: 8px; }
  .tbl th:nth-child(n+3), .tbl td:nth-child(n+3) { display: none; }
}