/* Dark trading-terminal layout: header, chart + side panel (signals, order ticket), tabbed records below. */
:root {
  --bg: #0f131a; --panel: #171c25; --panel2: #1d2330; --line: #2a3140; --ink: #d7dce4; --muted: #8a93a3;
  --up: #26a69a; --down: #ef5350; --accent: #4c8dff; --warn: #f0b429; --hit: rgba(240, 180, 41, .14);
  --font: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); font: 13px/1.45 var(--font); }
[hidden] { display: none !important; }
button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea {
  background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 4px 6px; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
button { cursor: pointer; border: 1px solid var(--line); background: var(--panel2); border-radius: 4px; padding: 4px 10px; }
button:hover { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.link { border: 0; background: none; color: var(--accent); padding: 0 4px; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.up { color: var(--up); } .down { color: var(--down); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.error { color: var(--down); min-height: 1.4em; }

/* login */
.login { min-height: 100%; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(360px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 24px; display: grid; gap: 12px; }
.login-card h1 { margin: 0; font-size: 20px; }
.login-card p { margin: 0; }
.login-card label { display: grid; gap: 4px; }
.login-card input { padding: 8px; }
.login-card button { padding: 8px; }

/* header */
.app { height: 100vh; height: 100dvh; display: flex; flex-direction: column; overflow: hidden; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; padding: 8px 14px; border-bottom: 1px solid var(--line); background: var(--panel); }
.brand { display: flex; flex-direction: column; line-height: 1.2; }
.brand b { font-size: 15px; }
.brand span { font-size: 11px; }
.price { display: flex; align-items: baseline; gap: 8px; }
#last { font: 600 20px var(--mono); }
.conn { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.conn i { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); }
.conn.live i { background: var(--up); } .conn.down i { background: var(--down); }
.summary { display: flex; gap: 16px; margin: 0; }
.summary div { display: flex; flex-direction: column; line-height: 1.2; }
.summary dt { font-size: 11px; color: var(--muted); }
.summary dd { margin: 0; font: 13px var(--mono); }
.controls { display: flex; align-items: center; gap: 10px; margin-left: auto; flex-wrap: wrap; }
.controls input[type=number] { width: 56px; }
.check { display: flex; align-items: center; gap: 4px; }
.user { display: flex; align-items: center; gap: 4px; color: var(--muted); }

.banner { padding: 8px 14px; font-weight: 600; background: var(--hit); border-bottom: 1px solid var(--warn); color: var(--warn); }

/* grid */
.grid { flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) 340px; grid-template-rows: minmax(0, 1fr) minmax(200px, 34vh); gap: 1px; background: var(--line); min-height: 0; }
.grid > * { background: var(--bg); min-width: 0; min-height: 0; }
.chart-wrap { position: relative; }
.chart { position: absolute; inset: 0; }
.legend { position: absolute; left: 10px; top: 6px; z-index: 3; font-size: 11px; color: var(--muted); pointer-events: none; display: flex; gap: 10px; flex-wrap: wrap; }
.legend b { font-weight: 400; }
.legend .shade { display: inline-block; width: 14px; height: 8px; background: rgba(140, 170, 210, .35); vertical-align: middle; }
.side { grid-row: 1 / span 2; grid-column: 2; overflow-y: auto; background: var(--panel); }
.bottom { grid-column: 1; display: flex; flex-direction: column; background: var(--panel); }
.panel h2 { font-size: 13px; margin: 0 0 8px; display: flex; justify-content: space-between; }

/* signals */
.signals { padding: 12px 12px 6px; border-bottom: 1px solid var(--line); }
.sig { border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; margin-bottom: 8px; background: var(--panel2); }
.sig.hit { border-color: var(--warn); box-shadow: 0 0 0 1px var(--warn) inset; background: linear-gradient(var(--hit), var(--hit)), var(--panel2); }
.sig .head { display: flex; align-items: center; gap: 8px; }
.sig .head b { font-size: 14px; }
.sig.long .head b { color: var(--up); } .sig.short .head b { color: var(--down); }
.sig .p { margin-left: auto; font: 600 18px var(--mono); }
.bar { height: 6px; background: var(--bg); border-radius: 3px; position: relative; margin: 6px 0; overflow: hidden; }
.bar > i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 3px; background: var(--muted); }
.sig.long .bar > i { background: var(--up); } .sig.short .bar > i { background: var(--down); }
.bar > s { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--warn); }
.sig dl { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; margin: 4px 0; font-size: 12px; }
.sig dt { color: var(--muted); } .sig dd { margin: 0; }
.sig .act { display: flex; justify-content: flex-end; }
.hint { font-size: 11px; color: var(--muted); margin: 0 0 6px; }

/* ticket */
.ticket { padding: 12px; display: grid; gap: 8px; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; }
.seg button.on { border-color: var(--accent); background: rgba(76, 141, 255, .15); }
.sides button.buy.on { border-color: var(--up); background: rgba(38, 166, 154, .18); color: var(--up); }
.sides button.sell.on { border-color: var(--down); background: rgba(239, 83, 80, .18); color: var(--down); }
.row { display: grid; grid-template-columns: 92px 1fr; align-items: center; gap: 8px; }
.row.small { grid-template-columns: auto 56px auto auto; justify-content: start; font-size: 12px; color: var(--muted); }
.row span { display: flex; align-items: center; gap: 4px; }
.note { display: grid; gap: 4px; font-size: 12px; color: var(--muted); }
.note textarea { resize: vertical; color: var(--ink); }
.checklist { margin: 0; padding: 8px 10px 8px 26px; background: var(--panel2); border-radius: 6px; font-size: 12px; display: grid; gap: 2px; }
.checklist li.ok::marker { color: var(--up); } .checklist li.bad::marker { color: var(--down); }
.checklist li.ok b { color: var(--up); } .checklist li.bad b { color: var(--down); }
.preview { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; margin: 0; font-size: 12px; }
.preview dt { color: var(--muted); } .preview dd { margin: 0; text-align: right; font-family: var(--mono); }
.submit { padding: 9px; font-weight: 600; color: #fff; border: 0; }
.submit.buy { background: var(--up); } .submit.sell { background: var(--down); }
.msg { margin: 0; min-height: 1.2em; font-size: 12px; }
.msg.err { color: var(--down); } .msg.ok { color: var(--up); }

/* tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); padding: 0 8px; overflow-x: auto; flex: none; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 10px; color: var(--muted); white-space: nowrap; }
.tabs button.on { color: var(--ink); border-bottom-color: var(--accent); }
.tab-body { flex: 1; overflow: auto; min-height: 0; }
.tab { display: none; padding: 8px 12px; }
.tab.on { display: block; }
table { border-collapse: collapse; width: 100%; font-size: 12px; }
th, td { padding: 4px 8px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 400; position: sticky; top: 0; background: var(--panel); }
th:first-child, td:first-child, td.l, th.l { text-align: left; }
td.wrap { white-space: normal; text-align: left; min-width: 160px; max-width: 360px; }
td input { width: 84px; }
.empty { color: var(--muted); padding: 12px 0; }
.stats { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 4px 0 10px; font-size: 12px; }
.stats b { font-family: var(--mono); font-weight: 400; }
.forms { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.card { border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; display: grid; gap: 8px; align-content: start; }
.card h3 { margin: 0; font-size: 13px; }
.card label { display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 8px; }
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
dialog { background: var(--panel); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; max-width: min(560px, 92vw); }
dialog::backdrop { background: rgba(0, 0, 0, .5); }
dialog h3 { margin-top: 0; }
dialog code { font-family: var(--mono); background: var(--bg); padding: 1px 4px; border-radius: 3px; }

@media (max-width: 900px) {
  .app { height: auto; overflow: visible; }
  .grid { display: flex; flex-direction: column; }
  .chart-wrap { height: 58vh; min-height: 320px; }
  .side { overflow: visible; }
  .bottom { min-height: 360px; }
  .controls { margin-left: 0; }
  .summary { gap: 12px; }
}