:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #15181d;
  --muted: #5d6673;
  --up: #12805c;
  --down: #c8342b;
  --flat: #8a6d00;
  --accent: #2f6fdb;
  --put: #12805c;
  --call: #c8342b;
  --flip: #b26a00;
  --hvl: #7a4fd1;
  --em: #0b8fa8;
  --heat1: #dc2626; --heat2: #ea7a12; --heat3: #c9a400; --grow: #16a34a;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1116;
    --panel: #161a21;
    --border: #262c36;
    --text: #e6e9ee;
    --muted: #8e98a6;
    --up: #2fbf8a;
    --down: #ef5a50;
    --flat: #e0b43a;
    --accent: #5b93ff;
    --put: #2fbf8a;
    --call: #ef5a50;
    --flip: #f0a43a;
    --hvl: #a989ff;
    --em: #3cc6dd;
    --heat1: #ef4444; --heat2: #f59e0b; --heat3: #facc15; --grow: #22c55e;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1116; --panel: #161a21; --border: #262c36; --text: #e6e9ee; --muted: #8e98a6;
  --up: #2fbf8a; --down: #ef5a50; --flat: #e0b43a; --accent: #5b93ff;
  --put: #2fbf8a; --call: #ef5a50; --flip: #f0a43a; --hvl: #a989ff; --em: #3cc6dd;
  --heat1: #ef4444; --heat2: #f59e0b; --heat3: #facc15; --grow: #22c55e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.mkt-closed { display: inline-block; margin-left: 8px; padding: 1px 8px; border-radius: 6px; font-size: 11px; font-weight: 700;
  color: #fff; background: #6b7280; vertical-align: 2px; }
.mkt-closed[hidden] { display: none; }
.disclaimer { flex: 1; text-align: center; color: #fff; background: #c8342b; border-radius: 6px; font-size: 12px; font-weight: 600; padding: 2px 10px; margin: 0 auto; max-width: max-content; }
.top {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 5px 16px; padding-top: max(5px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--border); background: var(--panel);
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 700; font-size: 14px; }
.status { color: var(--muted); font-size: 11px; text-align: right; }
.top-right { display: flex; align-items: center; gap: 10px; }
.theme-btn { background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--text); font: inherit; font-size: 12px; padding: 2px 10px; cursor: pointer; }
.theme-btn:hover { border-color: var(--muted); }

main { max-width: 1400px; margin: 0 auto; padding: 12px 16px; }
html { -webkit-text-size-adjust: 100%; }

.cards { position: relative; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.user-hidden { display: none !important; }
.card { position: relative; }
.card-x { position: absolute; top: 3px; right: 4px; width: 20px; height: 20px; padding: 0; border: 0; border-radius: 5px; background: none;
  color: var(--muted); font: 16px/1 system-ui, sans-serif; cursor: pointer; opacity: .55; }
.card-x:hover { opacity: 1; color: var(--text); background: var(--border); }
.cards.mini .card-x { top: 50%; transform: translateY(-50%); }
.cards { padding-right: 30px; }
.cards-toggle { position: absolute; top: 4px; right: 4px; z-index: 2; width: 24px; height: 22px; padding: 0; line-height: 1;
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px; color: var(--muted); font: 600 16px/1 system-ui, sans-serif; cursor: pointer; }
.cards-toggle:hover { color: var(--text); border-color: var(--muted); }
/* Minimized: one compact strip of values. */
.cards.mini { grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 6px; }
.cards.mini .card { padding: 4px 10px; }
.cards.mini .card.big { grid-column: span 1; }
.cards.mini .label, .cards.mini .hint, .cards.mini .meter { display: none; }
.cards.mini .value, .cards.mini .card.big .value { font-size: 16px; margin: 0; white-space: nowrap; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; min-width: 0; }
.card.big { grid-column: span 2; }
.label { color: var(--muted); font-size: 12px; }
.value { font-size: 20px; font-weight: 650; margin-top: 2px; font-variant-numeric: tabular-nums; }
.card.big .value { font-size: 26px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; font-variant-numeric: tabular-nums; }
.up { color: var(--up); } .down { color: var(--down); } .flat { color: var(--flat); }
.meter { height: 6px; border-radius: 3px; background: var(--border); margin-top: 8px; position: relative; overflow: hidden; }
.meter-fill { position: absolute; top: 0; bottom: 0; left: 50%; width: 0; background: var(--muted); transition: all .3s; }

.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 14px 0 10px; }
.toggles { border: 1px solid var(--border); border-radius: 10px; background: var(--panel); padding: 6px 12px; margin: 0; display: flex; gap: 14px; flex-wrap: wrap; }
.toggles legend { color: var(--muted); font-size: 11px; padding: 0 4px; }
.toggles label { cursor: pointer; user-select: none; white-space: nowrap; }
.ranges { display: flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--panel); margin-left: auto; }
.ranges button { background: none; border: 0; color: var(--text); padding: 8px 12px; cursor: pointer; font: inherit; }
.ranges button.on { background: var(--accent); color: #fff; }
.range-select { appearance: none; -webkit-appearance: none; background: none; border: 0; color: var(--text); font: inherit; cursor: pointer;
  padding: 8px 26px 8px 12px; border-right: 1px solid var(--border);
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 13px center, right 9px center; background-size: 4px 4px; background-repeat: no-repeat; }
.range-select.on { background-color: var(--accent); color: #fff; }
.range-select option { color: var(--text); background: var(--panel); }

.gex-table.mini .more { display: none; }
.card-tools { position: absolute; top: 6px; right: 6px; display: flex; gap: 4px; z-index: 2; }
.tool-btn { width: 24px; height: 22px; padding: 0; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); color: var(--muted);
  font: 600 15px/1 system-ui, sans-serif; cursor: pointer; }
.tool-btn:hover { color: var(--text); border-color: var(--muted); }
.expand.chart-x { font: 18px/1 system-ui, sans-serif; }
/* Manual */
.help-btn { font: 700 14px/1 system-ui, sans-serif; }
.help { width: min(760px, calc(100vw - 24px)); max-height: calc(100dvh - 40px); padding: 0; border: 1px solid var(--border); border-radius: 12px;
  background: var(--panel); color: var(--text); box-shadow: 0 16px 48px rgba(0,0,0,.35); }
.help[open] { display: flex; flex-direction: column; }
.help::backdrop { background: rgba(0,0,0,.45); }
.help-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.help-head h2 { margin: 0; font-size: 17px; }
.help-toc { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 8px 16px; border-bottom: 1px solid var(--border); font-size: 12px; }
.help-toc a, .help-body a { color: var(--accent); text-decoration: none; }
.help-body { overflow: auto; padding: 4px 16px 16px; font-size: 13.5px; line-height: 1.55; }
.help-body h3 { font-size: 15px; margin: 18px 0 6px; scroll-margin-top: 8px; }
.help-body ul { margin: 0; padding-left: 18px; }
.help-body li { margin: 3px 0; }
.help-warn { color: #fff; background: #c8342b; border-radius: 6px; padding: 6px 10px; font-weight: 600; font-size: 12.5px; margin: 12px 0 0; }
.hicon { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 26px; margin: 0 2px; vertical-align: middle;
  border: 1px solid var(--border); border-radius: 6px; color: var(--text); background: var(--bg); }
.hsym { font: 600 18px/1 system-ui, sans-serif; }
.help-body li { margin: 6px 0; }
.help-keys { width: 100%; border-collapse: collapse; font-size: 13px; margin: 6px 0 8px; }
.help-keys th, .help-keys td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.help-keys th { color: var(--muted); font-weight: 600; font-size: 12px; }
/* Settings gear + menu */
.settings { position: relative; }
.gear { background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--text); width: 30px; height: 24px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.gear:hover { border-color: var(--muted); }
.settings-menu { position: absolute; right: 0; top: calc(100% + 6px); z-index: 60; width: 230px; max-height: 75vh; overflow: auto;
  background: var(--panel); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,.25); font-size: 13px; }
.sm-group { margin-bottom: 8px; }
.sm-title { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; margin: 2px 0 4px; }
.settings-menu label { display: flex; align-items: center; gap: 8px; padding: 3px 0; cursor: pointer; }
.sm-all { width: 100%; margin-top: 2px; padding: 6px; border: 1px solid var(--border); border-radius: 6px; background: none; color: var(--text); font: inherit; cursor: pointer; }
.sm-all:disabled { opacity: .45; cursor: default; }
.gex-table { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px 64px 10px 14px; margin-bottom: 10px; overflow-x: auto; }
.gex-table table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.gex-table th, .gex-table td { text-align: right; padding: 4px 10px; white-space: nowrap; }
.gex-table th:first-child, .gex-table td:first-child { text-align: left; }
.gex-table th { color: var(--muted); font-weight: 500; font-size: 12px; }
.gex-note { color: var(--muted); font-size: 12px; }
.sw { display: inline-block; width: 10px; height: 3px; vertical-align: middle; margin-right: 6px; border-radius: 2px; }

.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(560px, 100%), 1fr)); gap: 10px; }
/* Panels in a grid row stretch to the tallest one; the chart grows to fill its panel. */
.chart-panel { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px; min-width: 0; overflow: hidden;
  display: flex; flex-direction: column; }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; margin: 0 4px 6px; }
.chart-title { font-weight: 650; }
.chart-title .nm { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 6px; }
.chart-price { font-variant-numeric: tabular-nums; font-weight: 600; }
.chart-box { flex: 1 1 0; height: auto; min-height: 340px; width: 100%; overflow: hidden; }
.chart-right { display: flex; align-items: baseline; gap: 10px; }
.chart-iv { font-size: 12px; font-weight: 600; color: var(--em); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; font-variant-numeric: tabular-nums; }
.chart-iv:empty { display: none; }
.iv-label { color: var(--muted); font-weight: 700; margin-right: 2px; }
.chart-note { color: var(--muted); font-size: 12px; margin: 6px 4px 0; font-variant-numeric: tabular-nums; }
.expand { background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--muted); cursor: pointer;
  line-height: 0; width: 30px; height: 26px; padding: 0; align-self: center; display: inline-flex; align-items: center; justify-content: center; }
.expand + .expand { margin-left: -4px; }
.expand:hover { color: var(--text); border-color: var(--muted); }
.chart-panel.wide { grid-column: 1 / -1; }
/* Fill the page: full width, chart as tall as the window minus the sticky title bar and panel header. */
.chart-panel.tall { grid-column: 1 / -1; scroll-margin-top: 40px; }
.chart-panel.tall .chart-box { flex: none; height: calc(100vh - 130px); height: calc(100dvh - 130px); min-height: 300px; }
.chart-panel:fullscreen, .chart-panel.pseudo-full { display: flex; flex-direction: column; border-radius: 0; border: 0; padding: 12px; background: var(--bg); }
.chart-panel:-webkit-full-screen { display: flex; flex-direction: column; padding: 12px; background: var(--bg); }
.chart-panel.pseudo-full { position: fixed; inset: 0; z-index: 50; padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)); }
.chart-panel:fullscreen .chart-box, .chart-panel:-webkit-full-screen .chart-box, .chart-panel.pseudo-full .chart-box { flex: 1; height: auto; min-height: 0; }
.chart-panel:fullscreen .expand:not(.fs), .chart-panel.pseudo-full .expand:not(.fs) { display: none; }
body.no-scroll { overflow: hidden; }
/* GEX card: MACD (40%) stacked over the GEX bars (60%); one alone fills the card. */
.chart-box.split { display: flex; flex-direction: column; gap: 6px; min-height: 520px; }
.chart-box.split .sub { position: relative; min-height: 0; overflow: hidden; }
.chart-box.split .macd-sub { flex: 2; }
.chart-box.split .gex-sub { flex: 3; }
.chart-box.split .sub:only-child { flex: 1; }
.chart-box.split:has(> .sub:only-child) { min-height: 340px; }
.chart-box.split .gex-sub:not(:only-child) { border-top: 1px solid var(--border); padding-top: 4px; }
.macd-legend { position: absolute; top: 2px; left: 6px; z-index: 3; font-size: 12px; font-weight: 600; display: flex; gap: 8px; color: var(--muted); pointer-events: none; font-variant-numeric: tabular-nums; }
.chart-box { position: relative; }
.vix-move { position: absolute; top: 6px; left: 8px; z-index: 3; padding: 3px 8px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--panel); font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; pointer-events: auto; }
.vix-move .vm-label { color: var(--muted); font-weight: 600; }
.chart-err { color: var(--muted); padding: 40px 10px; text-align: center; }

.foot { color: var(--muted); font-size: 12px; margin: 18px 0 8px; }

/* Phones: two-up compact cards, full-width controls with touch-sized targets, shorter charts. */
@media (max-width: 640px) {
  main { padding: 10px 10px; }
  .top { padding-left: 10px; padding-right: 10px; }
  .cards { grid-template-columns: 1fr 1fr; gap: 8px; }
  .card { padding: 8px 10px; }
  .card.big { grid-column: span 2; }
  .cards.mini { grid-template-columns: repeat(3, 1fr); }
  .cards.mini .card.big { grid-column: span 1; }
  .value { font-size: 17px; }
  .card.big .value { font-size: 21px; }
  .hint { font-size: 11px; }
  .controls { gap: 8px; margin: 10px 0 8px; }
  .toggles { gap: 4px 12px; padding: 4px 10px; }
  .status .long { display: none; }
  .top { flex-wrap: wrap; row-gap: 4px; }
  .disclaimer { order: 3; flex-basis: 100%; max-width: none; font-size: 11px; }
  .toggles label { padding: 4px 0; }
  .toggles input { width: 18px; height: 18px; vertical-align: -4px; }
  .ranges { margin-left: 0; width: 100%; }
  .ranges button { flex: 1; padding: 10px 0; }
  .range-select { padding-top: 10px; padding-bottom: 10px; }
  .chart-panel { padding: 8px 6px; }
  .chart-title .nm { display: none; }
  .chart-box { min-height: 300px; }
  .expand { width: 34px; height: 30px; }
  .gex-table { padding: 8px 10px; }
}