/* Two visual directions from one sheet. Every text colour is ≥ 4.5:1 (WCAG AA) on the surface it sits on
   (checked by calculation; see docs). Sans-serif for prose; monospace only for numbers, addresses, hashes. */
:root, [data-theme="dark"] {
  --bg: #0e1211; --panel: #161c1a; --panel-2: #1c2421; --line: #27302c;
  --text: #ecf3ef;      /* 15.3:1 on panel */
  --muted: #a9b8b0;     /*  8.4:1 on panel */
  --up: #4ade80; --down: #f87171; --link: #7cc4ff; --amber: #fbbf24; --liq: #c4b5fd;
  --pill-ok-bg: #86efac; --pill-ok-fg: #052e16; --pill-amber-bg: #fcd34d; --pill-amber-fg: #1c1400; --pill-bad-bg: #b91c1c; --pill-bad-fg: #ffffff;
  --grid: #222b27; color-scheme: dark;
}
[data-theme="light"] {
  --bg: #f6f5f1; --panel: #ffffff; --panel-2: #f1f0ea; --line: #e2e0d8;
  --text: #14201b;      /* 16.8:1 */
  --muted: #55615b;     /*  6.5:1 */
  --up: #11793d; --down: #b42323; --link: #1d5fa8; --amber: #8a5a00; --liq: #5b3fb3;
  --pill-ok-bg: #11793d; --pill-ok-fg: #ffffff; --pill-amber-bg: #fcd34d; --pill-amber-fg: #1c1400; --pill-bad-bg: #b91c1c; --pill-bad-fg: #ffffff;
  --grid: #ecebe5; color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
.num, .addr, code { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; }
a { color: var(--link); text-decoration: none; } a:hover { text-decoration: underline; }
button { font: inherit; }

/* header */
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 24px; padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.brand { color: var(--text); font-weight: 700; font-size: 17px; }
nav a { margin-right: 16px; color: var(--muted); font-size: 15px; } nav a.on { color: var(--text); font-weight: 600; }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.reset { color: var(--muted); font-size: 14px; } .reset b { color: var(--text); font-weight: 600; }
.pill { border: 0; border-radius: 999px; padding: 5px 14px; font-size: 14px; font-weight: 600; cursor: pointer; line-height: 1.4; }
.pill-ok { background: var(--pill-ok-bg); color: var(--pill-ok-fg); }
.pill-amber, .pill-loading { background: var(--pill-amber-bg); color: var(--pill-amber-fg); }
.pill-bad { background: var(--pill-bad-bg); color: var(--pill-bad-fg); }
.pill-detail { max-width: 1200px; margin: 10px max(16px, calc((100% - 1200px) / 2)) 0; padding: 14px 18px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; font-size: 15px; line-height: 1.5; }
.pill-detail p { margin: 0 0 6px; } .pill-detail p:last-child { margin: 0; }

main { max-width: 1240px; margin: 0 auto; padding: 20px 20px 40px; }
.sec { margin-top: 40px; }
h2 { font-size: 20px; margin: 0 0 14px; font-weight: 700; }
h2 .meta { font-size: 13px; font-weight: 400; color: var(--muted); margin-left: 8px; }
h3 { font-size: 15px; color: var(--muted); font-weight: 600; margin: 28px 0 10px; }
.sub { color: var(--muted); font-size: 14px; }

/* halving strip */
.halving { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 36px; padding: 16px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.h-label { color: var(--muted); font-size: 14px; margin-right: 6px; }
.h-big { font-size: 30px; font-weight: 700; } .h-mid { font-size: 22px; font-weight: 700; } .h-unit { color: var(--muted); font-size: 14px; }
.h-detail { flex-basis: 100%; color: var(--muted); font-size: 14px; line-height: 1.5; }

/* price + chart */
.price-line { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 16px; }
.price { font-size: 34px; font-weight: 700; } .chg { font-size: 16px; margin-left: 8px; } .up { color: var(--up); } .down { color: var(--down); }
.chart-card { margin-top: 14px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
#chart { height: 380px; width: 100%; }
.tfs { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.tfs button { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 5px 12px; font-size: 14px; cursor: pointer; min-height: 34px; }
.tfs button.on { color: var(--text); border-color: var(--muted); font-weight: 600; } .tfs .sep { width: 12px; }
details.note { margin-top: 8px; } details.note summary { color: var(--muted); font-size: 13px; cursor: pointer; } details.note p { color: var(--muted); font-size: 14px; margin: 6px 0 0; }

/* protocol */
.key-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.card .k { color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .01em; }
.key-row .card .v { font-size: 28px; font-weight: 700; margin-top: 4px; }
.card .v { font-size: 20px; font-weight: 700; margin-top: 3px; word-break: break-word; }
.card .s { color: var(--muted); font-size: 13px; margin-top: 6px; line-height: 1.5; }
.card details { margin-top: 8px; } .card summary { color: var(--muted); font-size: 13px; cursor: pointer; } .card details p { margin: 6px 0 0; font-size: 13px; color: var(--muted); line-height: 1.5; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }

/* tape */
.filters { display: flex; flex-wrap: wrap; gap: 10px 14px; margin-bottom: 12px; }
.filters label { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; white-space: nowrap; } .filters .grow { flex: 1 1 240px; }
.filters input, .filters select { background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px; font-size: 15px; width: 100%; min-width: 80px; min-height: 38px; }
.tape { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.row { display: grid; grid-template-columns: 76px 74px 120px 120px 1fr 1fr; gap: 12px; padding: 10px 16px; min-height: 48px; align-items: center; border-bottom: 1px solid var(--line); font-size: 15px; }
.row:last-child { border-bottom: 0; } .row.head { min-height: 36px; color: var(--muted); font-size: 13px; font-weight: 600; background: var(--panel-2); }
.side-pill { display: inline-block; min-width: 54px; text-align: center; border-radius: 999px; padding: 2px 10px; font-size: 13px; font-weight: 700; }
.buy .side-pill { background: color-mix(in srgb, var(--up) 18%, transparent); color: var(--up); }
.sell .side-pill { background: color-mix(in srgb, var(--down) 18%, transparent); color: var(--down); }
.liquidity_add .side-pill, .liquidity_remove .side-pill { background: color-mix(in srgb, var(--liq) 18%, transparent); color: var(--liq); }
.arbitrage .side-pill { background: var(--panel-2); color: var(--muted); }
.row .usd { font-weight: 700; } .row .hegg { color: var(--text); } .row .venue { color: var(--muted); font-size: 13px; }
.row .t a { color: var(--muted); } .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); margin-left: 6px; vertical-align: middle; }
.empty { padding: 18px; color: var(--muted); }
footer { color: var(--muted); margin-top: 48px; font-size: 13px; line-height: 1.6; }

@media (max-width: 900px) { .key-row { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) {
  .top { padding: 10px 16px; gap: 8px 16px; } .top-right { margin-left: 0; width: 100%; justify-content: space-between; }
  main { padding: 16px 16px 32px; } .sec { margin-top: 34px; }
  .halving { padding: 14px 16px; gap: 6px 20px; } .h-big { font-size: 26px; } .h-mid { font-size: 19px; }
  .price { font-size: 30px; } #chart { height: 280px; }
  .tfs button { padding: 5px 10px; } .tfs .sep { width: 4px; }
  .key-row { grid-template-columns: 1fr 1fr; gap: 10px; } .key-row .card .v { font-size: 22px; } .card { padding: 14px; }
  .row { grid-template-columns: 1fr auto; grid-template-areas: "s u" "w h" "t v"; gap: 2px 12px; padding: 10px 14px; min-height: 64px; }
  .row .side { grid-area: s; } .row .usd { grid-area: u; text-align: right; font-size: 16px; } .row .who { grid-area: w; font-size: 14px; }
  .row .hegg { grid-area: h; text-align: right; font-size: 14px; } .row .t { grid-area: t; font-size: 13px; } .row .venue { grid-area: v; text-align: right; }
  .row.head { display: none; }
}