:root {
  color-scheme: light;
  --bg: #f3f3f0;
  --surface: #fcfcfb;
  --surface-2: #f5f5f2;
  --border: #e2e1db;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7d7c75;
  --series-1: #2a78d6;   /* Balance */
  --series-2: #eb6834;   /* Equity */
  --good: #0ca30c;
  --good-text: #006300;
  --bad: #d03b3b;
  --bad-text: #b3261e;
  --warn: #fab219;
  --grid: #e8e7e2;
  --shadow: 0 1px 2px rgba(0, 0, 0, .05);
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111110;
    --surface: #1a1a19;
    --surface-2: #222220;
    --border: #2f2f2c;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #8f8e85;
    --series-1: #3987e5;
    --series-2: #d95926;
    --good: #0ca30c;
    --good-text: #4cc94c;
    --bad: #d03b3b;
    --bad-text: #f07a7a;
    --grid: #2a2a27;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.num { font-variant-numeric: tabular-nums; }
.pos { color: var(--good-text); }
.neg { color: var(--bad-text); }
.muted { color: var(--muted); }

/* ── thanh trên ── */
.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 16px; letter-spacing: -.01em; }
.brand span { font-weight: 400; color: var(--text-2); }
.acct-pick { display: flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 13px; }
select, .btn, input {
  font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--border); border-radius: 7px;
  padding: 6px 10px;
}
select { padding-right: 24px; max-width: 100%; }
.btn { cursor: pointer; }
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--series-1); border-color: var(--series-1); color: #fff; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
:focus-visible { outline: 2px solid var(--series-1); outline-offset: 2px; }
.spacer { flex: 1; }
.status { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-2); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }
.status.on .dot { background: var(--good); box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 22%, transparent); }
.status.off .dot { background: var(--bad); }
.status b { color: var(--text); font-weight: 600; }

main { max-width: 1500px; margin: 0 auto; padding: 16px 20px 48px; display: grid; gap: 16px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); min-width: 0;
}
.card > header {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 16px 0;
}
.card h2 { margin: 0; font-size: 14px; font-weight: 600; }
.card .sub { color: var(--muted); font-size: 12.5px; }
.card .body { padding: 12px 16px 16px; }

/* ── thông tin tài khoản ── */
.acct-info { display: flex; flex-wrap: wrap; gap: 6px 28px; padding: 14px 16px; align-items: baseline; }
.acct-info .who { font-size: 17px; font-weight: 650; letter-spacing: -.01em; }
.acct-info .kv { font-size: 13px; color: var(--text-2); }
.acct-info .kv b { color: var(--text); font-weight: 600; }
.badge {
  display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600;
  border: 1px solid var(--border); color: var(--text-2); background: var(--surface-2);
}
.badge.real { border-color: color-mix(in srgb, var(--good) 50%, var(--border)); color: var(--good-text); }
.badge.alert { border-color: color-mix(in srgb, var(--bad) 55%, var(--border)); color: var(--bad-text); }

/* ── ô số liệu ── */
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kpis.small { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kpi { padding: 14px 16px; }
.kpi .label { font-size: 12.5px; color: var(--text-2); }
.kpi .value { font-size: 26px; font-weight: 650; letter-spacing: -.02em; line-height: 1.2; margin-top: 2px; white-space: nowrap; }
.kpi .value small { font-size: 13px; font-weight: 500; color: var(--muted); letter-spacing: 0; margin-left: 4px; }
.kpis.small .kpi .value { font-size: 19px; }
.kpi .note { font-size: 12.5px; color: var(--muted); margin-top: 2px; min-height: 18px; }
.meter { height: 4px; border-radius: 2px; background: var(--grid); margin-top: 8px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--series-1); border-radius: 2px; }
@media (max-width: 760px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpis.small { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi .value { font-size: 21px; }
  main { padding: 12px 12px 40px; }
  .top { padding: 10px 12px; gap: 10px; }
}

/* ── biểu đồ ── */
.grid2 { display: grid; gap: 16px; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); }
@media (max-width: 1000px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 7px; overflow: hidden; }
.seg button {
  font: inherit; font-size: 12.5px; color: var(--text-2); background: transparent; border: 0;
  padding: 4px 10px; cursor: pointer; border-left: 1px solid var(--border);
}
.seg button:first-child { border-left: 0; }
.seg button[aria-pressed="true"] { background: var(--surface-2); color: var(--text); font-weight: 600; }
.legend { display: flex; gap: 16px; font-size: 12.5px; color: var(--text-2); }
.legend i { display: inline-block; width: 14px; height: 0; border-top: 2px solid; vertical-align: middle; margin-right: 6px; }
.legend .k1 i { border-color: var(--series-1); }
.legend .k2 i { border-color: var(--series-2); }
.plot { position: relative; width: 100%; }
.plot svg { display: block; width: 100%; overflow: visible; }
.plot .gridline { stroke: var(--grid); stroke-width: 1; }
.plot .axis { stroke: var(--border); stroke-width: 1; }
.plot text { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.plot text.endlabel { fill: var(--text-2); font-size: 11.5px; font-weight: 600; }
.plot .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.plot .l1 { stroke: var(--series-1); }
.plot .l2 { stroke: var(--series-2); }
.plot .d1 { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.plot .d2 { fill: var(--series-2); stroke: var(--surface); stroke-width: 2; }
.plot .hair { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.plot .bar-pos { fill: var(--good); }
.plot .bar-neg { fill: var(--bad); }
.plot .bar-hit { fill: transparent; }
.plot .bar-hit:hover { fill: color-mix(in srgb, var(--text) 7%, transparent); }
.plot .nodata { fill: var(--muted); font-size: 13px; }
.tip {
  position: absolute; z-index: 5; pointer-events: none; min-width: 150px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .16); padding: 8px 10px; font-size: 12.5px;
}
.tip .t { color: var(--muted); margin-bottom: 4px; }
.tip .r { display: flex; justify-content: space-between; gap: 14px; }
.tip .r span { color: var(--text-2); }
.tip .r b { font-variant-numeric: tabular-nums; font-weight: 600; }
.tip .r i { display: inline-block; width: 10px; border-top: 2px solid; vertical-align: middle; margin-right: 6px; }
.tip .r .k1 { border-color: var(--series-1); }
.tip .r .k2 { border-color: var(--series-2); }

/* ── bảng ── */
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { padding: 7px 10px; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--border); }
th { font-weight: 600; color: var(--text-2); font-size: 12px; background: var(--surface); position: sticky; top: 0; }
td.r, th.r { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover td { background: var(--surface-2); }
tfoot td { font-weight: 600; border-bottom: 0; border-top: 1px solid var(--border); }
td.empty { text-align: center; color: var(--muted); padding: 22px 10px; }
.side { font-weight: 600; }
.side.buy { color: var(--series-1); }
.side.sell { color: var(--series-2); }
.side::before { margin-right: 4px; }
.side.buy::before { content: "▲"; font-size: 9px; }
.side.sell::before { content: "▼"; font-size: 9px; }
.cmt { color: var(--text-2); max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.botname { font-weight: 600; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.pager { display: flex; gap: 8px; align-items: center; margin-left: auto; font-size: 12.5px; color: var(--text-2); }

/* ── comment của chart ── */
.comments { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
.comment { border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); min-width: 0; }
.comment .head { display: flex; gap: 8px; align-items: center; padding: 8px 12px; border-bottom: 1px solid var(--border); font-weight: 600; }
.comment .head .tf { font-weight: 500; color: var(--muted); }
.comment .head .px { margin-left: auto; font-weight: 500; color: var(--text-2); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.comment pre {
  margin: 0; padding: 10px 12px; font: 12.5px/1.55 var(--mono);
  white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text);
}
.comment pre.none { color: var(--muted); font-family: inherit; }

/* ── trạng thái rỗng / đăng nhập ── */
.empty-page { max-width: 640px; margin: 64px auto; padding: 0 20px; }
.empty-page .card { padding: 24px; }
.empty-page h1 { font-size: 20px; margin: 0 0 8px; }
.empty-page ol { padding-left: 20px; color: var(--text-2); }
.empty-page code, .mono { font-family: var(--mono); font-size: 12.5px; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login { width: 100%; max-width: 360px; padding: 28px; }
.login h1 { margin: 0 0 4px; font-size: 22px; letter-spacing: -.02em; }
.login p { margin: 0 0 20px; color: var(--text-2); }
.login label { display: block; font-size: 13px; color: var(--text-2); margin: 12px 0 4px; }
.login input { width: 100%; padding: 9px 11px; font-size: 15px; }
.login .btn { width: 100%; margin-top: 20px; padding: 10px; font-size: 15px; }
.login .err { margin-top: 12px; color: var(--bad-text); font-size: 13px; min-height: 18px; }