:root {
  --bg: #f4f5f7; --card: #ffffff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
  --accent: #2563eb; --pos: #138a43; --neg: #c42b2b; --warn: #b45309;
  --buy: #138a43; --sell: #c42b2b; --price: #2563eb; --avg: #6b7280; --target: #b45309;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218; --card: #181c25; --text: #e6e8ec; --muted: #9aa3b2; --line: #2a303c;
    --accent: #5b8def; --pos: #3ccf7a; --neg: #ff6b6b; --warn: #f0a443;
    --buy: #3ccf7a; --sell: #ff6b6b; --price: #6ea1ff; --avg: #9aa3b2; --target: #f0a443;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.45; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
a { color: var(--accent); }

.top { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
nav a { text-decoration: none; color: var(--muted); padding: 4px 2px; }
nav a.on { color: var(--text); border-bottom: 2px solid var(--accent); }
nav form { margin: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.card.narrow { max-width: 380px; margin: 10vh auto; }
.card-head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; margin-bottom: 12px; }
h1 { font-size: 22px; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 0; }
.status-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.status-row .card { margin-bottom: 0; }
.status-row { margin-bottom: 16px; }

.label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.big { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); font-size: 13px; }
.ok-text { color: var(--pos); } .warn-text { color: var(--warn); }
.pos { color: var(--pos); } .neg { color: var(--neg); }

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 14px; }

.tag { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: var(--line); color: var(--muted); }
.tag.live { background: var(--neg); color: #fff; }

.button, button { display: inline-block; margin-top: 10px; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); text-decoration: none; font: inherit; cursor: pointer; }
.button.primary, button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.link { margin: 0; padding: 4px 2px; border: 0; background: none; color: var(--muted); }

.stack { display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input { padding: 9px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }

.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; border: 1px solid var(--line); }
.flash.error { border-color: var(--neg); color: var(--neg); }
.flash.ok { border-color: var(--pos); color: var(--pos); }

.chart-wrap { margin: 6px 0 14px; }
.chart { width: 100%; height: auto; display: block; }
.chart .price { fill: none; stroke: var(--price); stroke-width: 1.6; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .label { fill: var(--muted); font-size: 11px; text-transform: none; letter-spacing: 0; }
.chart .avg { stroke: var(--avg); stroke-dasharray: 4 4; }
.chart .target { stroke: var(--target); stroke-dasharray: 6 3; }
.chart .buy { fill: var(--buy); stroke: var(--card); stroke-width: 2; }
.chart .sell { fill: var(--sell); stroke: var(--card); stroke-width: 2; }
.legend { margin-left: 10px; text-transform: none; letter-spacing: 0; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin: 0 4px 0 8px; }
.dot.buy { background: var(--buy); } .dot.sell { background: var(--sell); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.reason { white-space: normal; color: var(--muted); font-size: 13px; min-width: 220px; }
.scroll { overflow-x: auto; }
.side { font-size: 12px; font-weight: 700; }
.side.buy { color: var(--buy); } .side.sell { color: var(--sell); }

details { margin-top: 12px; } summary { cursor: pointer; color: var(--muted); }
.params { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 13px; margin: 10px 0 0; }
.params dt { color: var(--muted); } .params dd { margin: 0; }

.log { margin: 0; max-height: 75vh; overflow: auto; font-size: 12px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.log .err { color: var(--neg); } .log .warn { color: var(--warn); } .log .hl { color: var(--accent); }

/* strategies */
.badge { font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 99px; border: 1px solid var(--line); }
.badge.running { color: var(--pos); border-color: var(--pos); }
.badge.paused { color: var(--warn); border-color: var(--warn); }
.badge.stopped { color: var(--muted); }
.tag.warn { background: var(--warn); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.actions form { margin: 0; display: flex; align-items: center; gap: 6px; }
.actions button, .actions .button { margin-top: 0; }
.state-btn.current { font-weight: 700; opacity: 1; }
.state-btn.running.current { border-color: var(--pos); color: var(--pos); }
.state-btn.paused.current { border-color: var(--warn); color: var(--warn); }
.state-btn.stopped.current { border-color: var(--muted); }
button:disabled { cursor: default; opacity: .85; }
button.danger { border-color: var(--neg); color: var(--neg); }
.confirm { display: inline-flex; flex-direction: row; gap: 4px; align-items: center; font-size: 12px; color: var(--warn); }
.list-head { display: flex; justify-content: space-between; align-items: center; margin: 4px 0 12px; }
.list-head .button { margin-top: 0; }
.row-between { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.row-between .button { margin-top: 0; }
.strategy-card.disabled { opacity: .7; }
.metrics.compact { margin: 12px 0; }
.metrics.compact .big { font-size: 18px; }
.crumbs { margin: 0 0 10px; }
.small { font-size: 12px; }
.flash.warn { border-color: var(--warn); color: var(--warn); }
tr.dim td { opacity: .6; }
table.settings td:first-child { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
table.settings td { white-space: normal; }

.settings-form fieldset { border: 1px solid var(--line); border-radius: 8px; margin: 0 0 16px; padding: 12px 14px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px 18px; }
.settings-form legend { padding: 0 6px; font-weight: 600; }
.field { display: grid; gap: 4px; font-size: 13px; color: var(--text); font-family: ui-monospace, Consolas, monospace; }
.field.check { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.field .help { font-family: system-ui, sans-serif; color: var(--muted); font-size: 12px; flex-basis: 100%; }
.field.has-error input, .field.has-error select { border-color: var(--neg); }
.field.has-error .help { color: var(--neg); }
select { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }
.danger-zone { border-color: var(--neg); }
.inline-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.inline-form button { margin-top: 0; }

@media (max-width: 520px) {
  main { padding: 10px; }
  .big { font-size: 19px; }
  .card { padding: 12px; }
}
.badge.disabled { color: var(--muted); border-style: dashed; }