/* TradeClaude — data-dense fintech dashboard. Tokens first; light default, dark via
   prefers-color-scheme or [data-theme]. */
:root {
  --bg: #f5f7fb; --surface: #ffffff; --surface-2: #f1f5f9; --surface-3: #e8eef6;
  --border: #e2e8f0; --border-strong: #cbd5e1;
  --text: #0f172a; --muted: #475569; --faint: #64748b;
  --primary: #1e40af; --primary-hover: #1e3a8a; --primary-soft: #dbeafe; --on-primary: #ffffff;
  --accent: #f59e0b; --accent-text: #92400e; --accent-soft: #fef3c7;
  --pos: #047857; --pos-soft: #d1fae5; --neg: #b91c1c; --neg-soft: #fee2e2;
  --info-soft: #eff6ff;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);
  --radius: 10px; --radius-sm: 6px;
  --sans: "Fira Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Fira Code", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --chart-line: #1e40af; --chart-fill: rgba(30, 64, 175, .08); --chart-dd: rgba(185, 28, 28, .55);
  --chart-grid: rgba(15, 23, 42, .06); --chart-oos: rgba(245, 158, 11, .10);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a1020; --surface: #101a2e; --surface-2: #15213a; --surface-3: #1b2a47;
    --border: #22314e; --border-strong: #2f4166;
    --text: #e6edf8; --muted: #a8b6cc; --faint: #8190a8;
    --primary: #60a5fa; --primary-hover: #93c5fd; --primary-soft: #172a52; --on-primary: #0a1020;
    --accent: #fbbf24; --accent-text: #fcd34d; --accent-soft: #3a2c0a;
    --pos: #34d399; --pos-soft: #0b2e22; --neg: #f87171; --neg-soft: #3b1414;
    --info-soft: #13213f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    --chart-line: #60a5fa; --chart-fill: rgba(96, 165, 250, .10); --chart-dd: rgba(248, 113, 113, .6);
    --chart-grid: rgba(230, 237, 248, .07); --chart-oos: rgba(251, 191, 36, .08);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a1020; --surface: #101a2e; --surface-2: #15213a; --surface-3: #1b2a47;
  --border: #22314e; --border-strong: #2f4166;
  --text: #e6edf8; --muted: #a8b6cc; --faint: #8190a8;
  --primary: #60a5fa; --primary-hover: #93c5fd; --primary-soft: #172a52; --on-primary: #0a1020;
  --accent: #fbbf24; --accent-text: #fcd34d; --accent-soft: #3a2c0a;
  --pos: #34d399; --pos-soft: #0b2e22; --neg: #f87171; --neg-soft: #3b1414;
  --info-soft: #13213f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  --chart-line: #60a5fa; --chart-fill: rgba(96, 165, 250, .10); --chart-dd: rgba(248, 113, 113, .6);
  --chart-grid: rgba(230, 237, 248, .07); --chart-oos: rgba(251, 191, 36, .08);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { line-height: 1.25; margin: 0; }
h1 { font-size: 24px; font-weight: 600; letter-spacing: -.01em; }
h2 { font-size: 17px; font-weight: 600; }
h3 { font-size: 15px; font-weight: 600; }
p { margin: 0 0 10px; }
.num, .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: .92em; }
.muted { color: var(--muted); } .faint { color: var(--faint); }
.pos { color: var(--pos); } .neg { color: var(--neg); } .warn { color: var(--accent-text); }
.icon { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon.sm { width: 15px; height: 15px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 18px 12px; gap: 4px; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 10px 18px; font-weight: 600; font-size: 16px; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: var(--on-primary); display: grid; place-items: center; }
.brand small { display: block; font-weight: 400; font-size: 12px; color: var(--faint); }
.nav a { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; color: var(--muted); font-weight: 500; transition: background .15s, color .15s; }
.nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.nav a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); }
.nav-label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding: 14px 10px 6px; }
.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 8px; }
.session { padding: 10px; border-radius: 8px; background: var(--surface-2); font-size: 13px; }
.session b { display: flex; align-items: center; gap: 6px; font-weight: 500; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); display: inline-block; flex: none; }
.dot.pos { background: var(--pos); } .dot.neg { background: var(--neg); } .dot.warn { background: var(--accent); }
.foot-row { display: flex; gap: 6px; }
.main { min-width: 0; }
.content { max-width: 1280px; margin: 0 auto; padding: 28px 32px 80px; }

.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head p { color: var(--muted); max-width: 760px; margin: 6px 0 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- surfaces ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.card-head p { margin: 2px 0 0; color: var(--muted); font-size: 13.5px; }
.card-body { padding: 16px 18px; }
.card + .card, .card + .section, .section + .card, .section + .section { margin-top: 18px; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(165px, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi .label { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.kpi .value { font-family: var(--mono); font-size: 24px; font-weight: 600; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.kpi .sub { font-size: 12.5px; color: var(--faint); }

.callout { display: flex; gap: 12px; padding: 12px 14px; border-radius: var(--radius); background: var(--info-soft); border: 1px solid var(--border); color: var(--text); font-size: 14px; margin-bottom: 16px; }
.callout .icon { color: var(--primary); margin-top: 2px; }
.callout.warn { background: var(--accent-soft); } .callout.warn .icon { color: var(--accent-text); }
.callout.neg { background: var(--neg-soft); } .callout.neg .icon { color: var(--neg); }
.callout.pos { background: var(--pos-soft); } .callout.pos .icon { color: var(--pos); }
.callout p:last-child { margin: 0; }

/* ---------- badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 500; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }
.badge.pos { background: var(--pos-soft); color: var(--pos); border-color: transparent; }
.badge.neg { background: var(--neg-soft); color: var(--neg); border-color: transparent; }
.badge.warn { background: var(--accent-soft); color: var(--accent-text); border-color: transparent; }
.badge.info { background: var(--primary-soft); color: var(--primary); border-color: transparent; }

/* ---------- buttons & forms ---------- */
.btn { display: inline-flex; align-items: center; gap: 7px; min-height: 38px; padding: 8px 14px; border-radius: 8px; border: 1px solid transparent; font: 500 14px var(--sans); cursor: pointer; background: var(--primary); color: var(--on-primary); transition: background .15s, border-color .15s, opacity .15s; text-decoration: none; }
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn.secondary:hover { background: var(--surface-2); }
.btn.ghost { background: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.danger { background: var(--neg); color: #fff; }
.btn.danger:hover { opacity: .9; }
.btn.sm { min-height: 32px; padding: 5px 10px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 5px; }
.field .hint { font-size: 12.5px; color: var(--faint); margin-top: 4px; }
input[type=text], input[type=password], input[type=number], input[type=search], input:not([type]), select { width: 100%; font: 14px var(--sans); padding: 9px 11px; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); min-height: 40px; }
input:focus, select:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 18px; overflow-x: auto; scrollbar-width: none; }
.tab { appearance: none; background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px; font: 500 14px var(--sans); color: var(--muted); cursor: pointer; white-space: nowrap; display: inline-flex; gap: 7px; align-items: center; margin-bottom: -1px; transition: color .15s, border-color .15s; }
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { color: var(--primary); border-bottom-color: var(--primary); }
.tab .count { font-family: var(--mono); font-size: 11.5px; background: var(--surface-2); color: var(--muted); border-radius: 999px; padding: 0 7px; }
.tab[aria-selected="true"] .count { background: var(--primary-soft); color: var(--primary); }
[role=tabpanel][hidden] { display: none; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th { text-align: left; font-weight: 500; font-size: 12.5px; color: var(--muted); background: var(--surface-2); padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0; }
table.data th.sortable { cursor: pointer; user-select: none; }
table.data th.sortable:hover { color: var(--text); }
table.data th[aria-sort=ascending]::after { content: " ▲"; font-size: 10px; }
table.data th[aria-sort=descending]::after { content: " ▼"; font-size: 10px; }
table.data td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover td { background: var(--surface-2); }
table.data .r, table.data td.num, table.data th.r { text-align: right; }
table.data td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 13.5px; white-space: nowrap; }
.strat-name { font-weight: 500; }
.strat-desc { color: var(--faint); font-size: 12.5px; max-width: 420px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.help { display: inline-grid; place-items: center; width: 15px; height: 15px; border-radius: 50%; border: 1px solid var(--border-strong); color: var(--faint); font-size: 10px; font-weight: 600; cursor: help; margin-left: 3px; vertical-align: 1px; }

.gates { display: inline-flex; gap: 3px; align-items: center; }
.gates i { width: 9px; height: 9px; border-radius: 2px; background: var(--neg-soft); border: 1px solid var(--neg); display: inline-block; }
.gates i.ok { background: var(--pos); border-color: var(--pos); }

.bar { position: relative; height: 6px; background: var(--surface-3); border-radius: 3px; min-width: 60px; margin-top: 4px; overflow: hidden; }
.bar > span { position: absolute; top: 0; bottom: 0; border-radius: 3px; }

/* ---------- stepper ---------- */
.stepper { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: step; }
.step { position: relative; padding: 16px 16px 16px 0; }
.step::before { content: ""; position: absolute; top: 30px; left: 34px; right: 0; height: 2px; background: var(--border); }
.step:last-child::before { display: none; }
.step.done::before { background: var(--pos); }
.step-n { position: relative; z-index: 1; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 600 13px var(--mono); background: var(--surface); border: 2px solid var(--border-strong); color: var(--muted); margin-bottom: 10px; }
.step.done .step-n { background: var(--pos); border-color: var(--pos); color: #fff; }
.step.current .step-n { border-color: var(--primary); color: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); }
.step h3 { font-size: 14px; } .step p { font-size: 13px; color: var(--muted); margin: 4px 0 0; }

/* ---------- misc ---------- */
.gate-list { display: grid; gap: 10px; }
.gate { display: grid; grid-template-columns: 26px 1fr auto; gap: 12px; align-items: start; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.gate .mark { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; }
.gate .mark.ok { background: var(--pos-soft); color: var(--pos); } .gate .mark.bad { background: var(--neg-soft); color: var(--neg); }
.gate p { margin: 3px 0 0; font-size: 13.5px; color: var(--muted); }
.gate .val { text-align: right; font-family: var(--mono); font-size: 14px; white-space: nowrap; }
.gate .val small { display: block; font-family: var(--sans); color: var(--faint); font-size: 12px; }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 0; font-size: 14px; }
dl.kv dt { color: var(--muted); } dl.kv dd { margin: 0; font-family: var(--mono); font-size: 13.5px; word-break: break-word; }
.log { font: 12.5px/1.6 var(--mono); background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; max-height: 70vh; overflow: auto; white-space: pre-wrap; }
.chart-box { position: relative; height: 340px; }
.chart-box.small { height: 160px; }
.legend { display: flex; gap: 16px; font-size: 12.5px; color: var(--muted); flex-wrap: wrap; }
.legend i { display: inline-block; width: 12px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 5px; }
.prose { max-width: 780px; }
.prose h2 { margin: 28px 0 10px; } .prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--muted); } .prose b { color: var(--text); font-weight: 500; }
.prose ul { padding-left: 20px; margin: 0 0 12px; }
.empty { text-align: center; padding: 40px 20px; color: var(--muted); }
.empty .icon { width: 34px; height: 34px; color: var(--faint); margin-bottom: 8px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input { max-width: 280px; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.seg-ctrl { display: inline-flex; border: 1px solid var(--border-strong); border-radius: 8px; overflow: hidden; }
.seg-ctrl button { appearance: none; border: 0; background: var(--surface); color: var(--muted); font: 500 13px var(--sans); padding: 6px 12px; cursor: pointer; min-height: 34px; }
.seg-ctrl button + button { border-left: 1px solid var(--border-strong); }
.seg-ctrl button.on-off[aria-pressed=true] { background: var(--surface-3); color: var(--text); }
.seg-ctrl button.on-paper[aria-pressed=true] { background: var(--primary-soft); color: var(--primary); }
.seg-ctrl button.on-live[aria-pressed=true] { background: var(--neg); color: #fff; }

/* ---------- login ---------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); padding: 28px; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; z-index: 20; height: auto; flex-direction: row; align-items: center; padding: 8px 12px; gap: 8px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .brand { padding: 0 6px 0 0; } .brand small, .nav-label, .session { display: none; }
  .nav { display: flex; gap: 2px; } .nav a { padding: 8px 10px; white-space: nowrap; }
  .sidebar-foot { margin: 0 0 0 auto; flex-direction: row; }
  .content { padding: 20px 16px 60px; }
  .grid.two, .grid.three { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: 1fr 1fr; gap: 10px; } .kpi .value { font-size: 20px; }
  .stepper { grid-template-columns: 1fr; }
  .step { padding: 8px 0 8px 44px; } .step-n { position: absolute; left: 0; top: 8px; }
  .step::before { top: 38px; bottom: -8px; left: 14px; right: auto; width: 2px; height: auto; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }