/* Bitcoin Text-to-SQL. Light page, dark navy header band, white cards,
   dark code blocks for SQL, Bitcoin orange as a small accent. */
:root {
  --bg: #eef1f6;
  --panel: #ffffff;
  --panel-2: #f6f8fb;
  --text: #0f172a;
  --text-2: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --navy: #0f1b2d;
  --navy-2: #1b2a42;
  --orange: #f7931a;
  --orange-dark: #c2410c;
  --orange-soft: rgba(247, 147, 26, 0.12);
  --link: #1d4ed8;
  --ok: #15803d;
  --bad: #dc2626;
  --code-bg: #0f1b2d;
  --code-text: #e2e8f0;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 8px rgba(15, 23, 42, 0.04);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15.5px; line-height: 1.55; color: var(--text); background: var(--bg);
  font-variant-numeric: tabular-nums;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; }
[hidden] { display: none !important; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.86em; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.r { text-align: right; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
h1, h2, h3 { margin: 0; }
h2 { font-size: 1.3rem; }
h3 { font-size: 0.95rem; color: var(--text-2); font-weight: 600; margin-bottom: 8px; }

/* Header band */
.top { position: sticky; top: 0; z-index: 10; background: var(--navy); color: #fff; }
.top-inner { display: flex; align-items: center; gap: 24px; height: 58px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 650; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }
.nav { display: flex; gap: 18px; font-size: 0.92rem; margin-left: auto; }
.nav a { color: #cbd5e1; }
.nav a:hover { color: #fff; text-decoration: none; }
.price { font-weight: 600; font-size: 0.88rem; padding: 4px 12px; border-radius: 999px; background: var(--navy-2); color: var(--orange); white-space: nowrap; }
.price small { font-weight: 600; margin-left: 6px; }

/* Buttons */
.btn { font: inherit; font-weight: 600; border-radius: 8px; padding: 0 22px; border: 1px solid var(--line); background: var(--panel); color: var(--text); cursor: pointer; }
.btn:hover { border-color: #cbd5e1; }
.btn-primary { background: var(--orange); border-color: var(--orange); color: #fff; }
.btn-primary:hover { background: #e8850d; border-color: #e8850d; }
.btn:disabled { opacity: 0.6; cursor: wait; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; font-weight: 500; border-radius: 6px; }
.link { border: 0; background: none; color: var(--link); font: inherit; cursor: pointer; padding: 0; }

/* Ask */
.intro { padding: 0 0 8px; }
.intro h1 { font-size: 1.9rem; letter-spacing: -0.01em; }
.intro > p { color: var(--text-2); max-width: 46rem; margin: 10px 0 18px; }

.intro { margin-top: 34px; }
.ask { display: flex; gap: 10px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 8px; box-shadow: var(--shadow); }
.ask input { flex: 1; font: inherit; font-size: 1.05rem; color: var(--text); background: transparent; border: 0; padding: 10px 10px; }
.ask input:focus { outline: none; }
.ask:focus-within { border-color: var(--orange); box-shadow: 0 0 0 3px var(--orange-soft); }
.ask .btn { padding: 10px 24px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; align-items: center; }
.chips-label { color: var(--muted); font-size: 0.85rem; }
.chips button { font: inherit; font-size: 0.85rem; color: var(--text-2); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.chips button:hover { border-color: var(--orange); color: var(--text); }
.fine { color: var(--muted); font-size: 0.8rem; margin: 6px 0 16px; }

.answer { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin-bottom: 14px; box-shadow: var(--shadow); }
.answer-q { font-weight: 600; margin-bottom: 10px; }
.answer-meta { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); font-size: 0.82rem; margin: 8px 0 10px; align-items: center; }
.answer-meta .spacer { flex: 1; }
.sql { background: var(--code-bg); border-radius: 8px; padding: 12px 14px; font-family: var(--mono); font-size: 0.84rem; white-space: pre-wrap; word-break: break-word; color: var(--code-text); border-left: 3px solid var(--orange); }
.big { font-size: 2.2rem; font-weight: 700; color: var(--navy); }
.notice { color: var(--text-2); }
.err { color: var(--bad); }
.loading { color: var(--muted); }
.loading::after { content: "…"; }
.result-wrap { max-height: 380px; overflow-y: auto; border: 1px solid var(--line); border-radius: 8px; }
.answer .chart { max-width: 900px; margin-bottom: 10px; }

/* Sections */
.section { padding-top: 44px; }
.section-head { margin-bottom: 14px; max-width: 48rem; }
.section-head p { margin: 4px 0 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; min-width: 0; box-shadow: var(--shadow); }
.table-panel { padding: 4px 16px; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; margin-top: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; box-shadow: var(--shadow); border-top: 3px solid var(--navy); }
.stat span { display: block; color: var(--muted); font-size: 0.8rem; }
.stat strong { font-size: 1.25rem; color: var(--navy); }
.stat small { display: block; color: var(--muted); font-size: 0.78rem; }

/* Charts */
.chart svg { display: block; width: 100%; height: auto; }
.gl { stroke: var(--line); }
.tk { fill: var(--muted); font-size: 11px; font-family: inherit; }
.bar { fill: var(--navy-2); }
.bar:hover { fill: var(--orange); }
.tip { position: fixed; z-index: 30; pointer-events: none; background: var(--navy); color: #fff; font-size: 0.8rem; padding: 6px 9px; border-radius: 6px; white-space: nowrap; }

.types .row { display: grid; grid-template-columns: 150px 1fr 60px; gap: 10px; align-items: center; font-size: 0.86rem; padding: 4px 0; }
.types .track { height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; border: 1px solid var(--line); }
.types .fill { height: 100%; background: var(--orange); }
.types .n { text-align: right; color: var(--text-2); }
.kv { margin: 0; }
.kv div { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.kv div:last-child { border-bottom: 0; }
.kv dt { color: var(--muted); flex: none; } .kv dd { margin: 0; text-align: right; min-width: 0; overflow-wrap: anywhere; }

/* Tables */
.table-wrap { overflow-x: auto; }
.blocks-wrap { max-height: 460px; overflow-y: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.table th { text-align: left; color: var(--muted); font-weight: 600; font-size: 0.78rem; padding: 9px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; position: sticky; top: 0; background: var(--panel); }
.table td { padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table .r, .table th.r { text-align: right; }
#block-rows tr { cursor: pointer; }
#block-rows tr:hover td, .table tbody tr[data-bench]:hover td { background: var(--panel-2); }
.hash { font-family: var(--mono); font-size: 0.82em; }
.result-table td { white-space: nowrap; }
.pass { color: var(--ok); font-weight: 600; } .fail { color: var(--bad); font-weight: 600; }
.lvl { font-size: 0.75rem; padding: 1px 8px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); color: var(--text-2); }
.bench-sql td { background: var(--panel-2); font-size: 0.82rem; }
.bench-sql code { display: block; white-space: pre-wrap; background: var(--code-bg); color: var(--code-text); border-radius: 6px; padding: 8px 10px; margin: 4px 0 10px; }

/* Schema */
.schema { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.schema .card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; box-shadow: var(--shadow); }
.schema .card h3 { color: var(--navy); font-family: var(--mono); font-size: 0.92rem; margin-bottom: 2px; }
.schema .card .rows { color: var(--muted); font-size: 0.8rem; margin-bottom: 8px; }
.schema ul { list-style: none; margin: 0; padding: 0; font-family: var(--mono); font-size: 0.78rem; }
.schema li { display: flex; justify-content: space-between; gap: 8px; padding: 2px 0; color: var(--text-2); }
.schema li span { color: var(--muted); }
.schema li.pk { color: var(--orange-dark); font-weight: 600; }

.how ol { color: var(--text-2); max-width: 50rem; padding-left: 1.2rem; }
.how li { margin-bottom: 8px; }
.how strong { color: var(--text); }
.footer { color: var(--muted); font-size: 0.85rem; padding-top: 22px; padding-bottom: 32px; margin-top: 40px; border-top: 1px solid var(--line); }

/* Drawer */
.drawer { position: fixed; inset: 0; z-index: 40; }
.drawer-back { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.45); }
.drawer-panel { position: absolute; top: 0; right: 0; bottom: 0; width: min(720px, 100%); background: var(--bg); display: flex; flex-direction: column; box-shadow: -8px 0 30px rgba(15, 23, 42, 0.2); }
.drawer-head { display: flex; align-items: center; gap: 14px; padding: 14px 18px; background: var(--navy); color: #fff; }
.drawer-head h2 { font-size: 1.05rem; flex: 1; }
.drawer-head .link { color: #fbbf24; }
.close { font-size: 1.5rem; line-height: 1; background: none; border: 0; color: #cbd5e1; cursor: pointer; }
.drawer-body { padding: 16px 18px 30px; overflow-y: auto; }
.drawer-body .kv, .drawer-body .table-wrap, .drawer-body .io > div { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 4px 14px; }
.drawer-body h3 { margin-top: 18px; }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.io h3 { margin-top: 10px; }
.io .item { padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 0.84rem; }
.io .item:last-child { border-bottom: 0; }
.io .item .v { font-weight: 600; }
.io .item .a { color: var(--muted); font-family: var(--mono); font-size: 0.78rem; overflow-wrap: anywhere; }

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2, .io { grid-template-columns: 1fr; }
  .schema { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav { display: none; }
  .price { margin-left: auto; }
}
@media (max-width: 560px) {
  .ask { flex-direction: column; }
  .schema { grid-template-columns: 1fr; }
  .types .row { grid-template-columns: 110px 1fr 56px; }
  .tk { font-size: 20px; }
}