/* GEX — dark financial dashboard. Palette per dataviz reference (dark mode),
   validated: #3987e5 #199e70 #c98500 #e66767 on #1a1a19. */
:root {
  color-scheme: dark; /* native controls follow the theme */
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);

  --calls: #199e70;   /* slot: aqua — calls / call wall */
  --puts: #e66767;    /* slot: red — puts / put wall */
  --spot: #3987e5;    /* slot: blue — spot */
  --flip: #c98500;    /* slot: yellow — gamma flip */

  --good: #0ca30c;
  --critical: #d03b3b;

  --tip-bg: #232322;
  --hoverband: rgba(255, 255, 255, 0.06);
  --shadow: rgba(0, 0, 0, 0.5);
}
/* Light theme — series palette validated on white (dataviz six checks):
   #2563eb #0e8a60 #ca8a04 #d92d20 all pass lightness/chroma/CVD/contrast. */
:root[data-theme="light"] {
  color-scheme: light;
  --page: #f4f4f2;
  --surface: #ffffff;
  --ink: #191918;
  --ink-2: #454540;
  --muted: #6e6d66;
  --grid: #e7e6e1;
  --axis: #d3d2cb;
  --border: rgba(25, 25, 20, 0.14);

  --calls: #0e8a60;
  --puts: #d92d20;
  --spot: #2563eb;
  --flip: #ca8a04;

  --good: #0c7a0c;
  --critical: #c22525;

  --tip-bg: #ffffff;
  --hoverband: rgba(0, 0, 0, 0.05);
  --shadow: rgba(30, 30, 20, 0.2);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }

/* Slim themed scrollbars — page and inner scrollports (tables, heatmap). */
* { scrollbar-width: thin; scrollbar-color: var(--axis) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--axis); border-radius: 999px;
  border: 2px solid transparent; background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--muted); border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-corner { background: transparent; }
body {
  background: var(--page);
  color: var(--ink);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ---- chrome ---- */
.top {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  padding: 14px 22px 10px;
}
.brand { font-size: 19px; font-weight: 650; color: var(--flip); }
.brand span { color: var(--ink); letter-spacing: 0.04em; }
.brand em { font-style: normal; font-weight: 400; font-size: 12px; color: var(--muted); margin-left: 8px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tabs button {
  background: none; border: 1px solid var(--border); color: var(--ink-2);
  padding: 6px 14px; border-radius: 999px; font: inherit; cursor: pointer;
}
.tabs button:hover { color: var(--ink); border-color: var(--muted); }
.tabs button[aria-current="true"] { background: var(--surface); color: var(--ink); border-color: var(--muted); font-weight: 600; }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.market { font-size: 12px; color: var(--muted); }
.market::before { content: "●"; margin-right: 5px; color: var(--muted); }
.market.open::before { color: var(--good); }

.filters {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 8px 22px 14px; border-bottom: 1px solid var(--grid);
}
.filters label { color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 7px; }
.filters .spacer { flex: 1; }
.asof { font-size: 12px; color: var(--muted); }
select, input, button { font: inherit; }
select option { background-color: var(--surface); color: var(--ink); }
select, .filters input, dialog input {
  background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 7px; padding: 5px 8px;
}
button {
  background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 7px; padding: 5px 12px; cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.ghost { background: none; color: var(--ink-2); }
.admin-tools { display: flex; gap: 8px; align-items: center; }

main { padding: 18px 22px 40px; max-width: 1180px; margin: 0 auto; }

/* ---- stat tiles ---- */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 16px; }
.tile {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px;
}
.tile .lbl { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.tile .lbl i { width: 10px; height: 3px; border-radius: 2px; display: inline-block; }
.tile .val { font-size: 24px; font-weight: 600; margin-top: 2px; }
.tile .sub { font-size: 12px; color: var(--ink-2); margin-top: 1px; }
.tile .sub.pos { color: var(--good); }
.tile .sub.neg { color: var(--puts); }
.badge {
  display: inline-block; font-size: 11px; font-weight: 600; border-radius: 5px;
  padding: 1px 7px; margin-top: 5px; border: 1px solid;
}
.badge.pos { color: var(--good); border-color: var(--good); }
.badge.neg { color: var(--critical); border-color: var(--critical); }

/* ---- cards & charts ---- */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px 10px; margin-bottom: 16px;
}
.card h2 { font-size: 14px; font-weight: 600; margin: 0 0 10px; }
.card h2.sub { margin-top: 14px; }
.card h2 small { font-weight: 400; color: var(--muted); margin-left: 8px; font-size: 12px; }
.chart { width: 100%; }
.chart svg { display: block; width: 100%; height: auto; }
.chart text { font: 11px system-ui, sans-serif; fill: var(--muted); }
.chart .tick { font-variant-numeric: tabular-nums; }
.chart .lvl-lab { font-size: 10.5px; fill: var(--ink-2); }

.legend { display: flex; gap: 18px; flex-wrap: wrap; padding: 6px 2px 2px; font-size: 12px; color: var(--ink-2); }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }

details { margin: 8px 0 6px; }
summary { color: var(--muted); font-size: 12px; cursor: pointer; }
.tbl { max-height: 300px; overflow: auto; margin-top: 8px; border: 1px solid var(--grid); border-radius: 8px; }
.tbl table { border-collapse: collapse; width: 100%; font-size: 12px; }
.tbl th, .tbl td { padding: 4px 10px; text-align: right; font-variant-numeric: tabular-nums; border-bottom: 1px solid var(--grid); }
.tbl th:first-child, .tbl td:first-child { text-align: left; }
.tbl th { position: sticky; top: 0; background: var(--surface); color: var(--muted); font-weight: 500; }
.tbl td { color: var(--ink-2); }

.foot { color: var(--muted); font-size: 12px; margin-top: 6px; max-width: 70ch; }

/* ---- how-to guide ---- */
.guide details { margin: 4px 0 10px; border-top: 1px solid var(--grid); padding-top: 8px; }
.guide details:first-of-type { border-top: none; padding-top: 0; }
.guide summary { color: var(--ink); font-size: 13px; font-weight: 600; padding: 3px 0; }
.guide summary:hover { color: var(--spot); }
.guide p, .guide li { color: var(--ink-2); font-size: 13px; line-height: 1.55; max-width: 85ch; }
.guide ul { margin: 6px 0 10px; padding-left: 20px; }
.guide li { margin: 4px 0; }
.guide b { color: var(--ink); }
.guide i { font-style: normal; font-weight: 600; color: var(--ink); }

/* ---- heatmap ---- */
/* Own scrollport (max-height) so the expiry header row and strike column can
   stick while scrolling a tall matrix; plain sticky can't work against page
   scroll from inside an overflow container. border-collapse: separate — sticky
   headers with collapsed borders leave their borders behind when scrolling. */
.heatwrap { overflow: auto; max-height: 74vh; margin-bottom: 8px; }
.heatwrap table { border-collapse: separate; border-spacing: 0; font-size: 12px; min-width: 100%; }
.heatwrap th, .heatwrap td {
  padding: 3px 10px; text-align: right; font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.heatwrap thead th {
  color: var(--muted); font-weight: 500; padding-bottom: 6px;
  position: sticky; top: 0; background: var(--surface); z-index: 2;
  box-shadow: 0 1px 0 var(--border);
}
/* Top-left corner ("Strike") sticks both ways, above row labels and cells. */
.heatwrap thead th:first-child { left: 0; z-index: 3; text-align: left; }
.heatwrap td.strike {
  position: sticky; left: 0; background: var(--surface); color: var(--muted);
  text-align: left; padding-right: 14px; z-index: 1;
}
.heatwrap tr.spot-row td.strike { color: var(--page); font-weight: 700; }
.heatwrap tr.spot-row td.strike span { background: var(--ink); border-radius: 999px; padding: 1px 9px; }
.heatwrap td.cell { color: var(--ink-2); border-right: 1px solid var(--page); border-bottom: 1px solid var(--page); min-width: 76px; }
.heatwrap td.cell.hot { color: #0d0d0d; font-weight: 600; }
.heatwrap td.cell.max { outline: 2px solid var(--flip); outline-offset: -2px; font-weight: 700; }

/* ---- tooltip ---- */
.tooltip {
  position: fixed; z-index: 10; pointer-events: none;
  background: var(--tip-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 11px; font-size: 12px; color: var(--ink-2);
  box-shadow: 0 4px 18px var(--shadow); max-width: 260px;
}
.chart .hoverband { fill: var(--hoverband); }
.tooltip .t { color: var(--muted); margin-bottom: 4px; }
.tooltip .r { display: flex; align-items: center; gap: 7px; margin: 2px 0; }
.tooltip .r i { width: 12px; height: 2px; border-radius: 1px; display: inline-block; }
.tooltip .r b { color: var(--ink); font-weight: 600; margin-left: auto; padding-left: 14px; font-variant-numeric: tabular-nums; }

/* ---- dialog ---- */
dialog {
  background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px 22px; min-width: 280px;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog h3 { margin: 0 0 12px; }
dialog form { display: flex; flex-direction: column; gap: 10px; }
dialog .row { display: flex; justify-content: flex-end; gap: 8px; }
.err { color: var(--critical); font-size: 12px; margin: 0; min-height: 1em; }

/* ---- suggestion box ---- */
.fb-btn {
  position: fixed; right: 18px; bottom: 18px; z-index: 5;
  background: var(--surface); border: 1px solid var(--border); color: var(--ink-2);
  border-radius: 999px; padding: 9px 16px; font-size: 13px;
  box-shadow: 0 4px 16px var(--shadow);
}
.fb-btn:hover { color: var(--ink); border-color: var(--muted); }
#fbDlg { width: min(420px, 92vw); }
#fbDlg textarea {
  background: var(--page); color: var(--ink); border: 1px solid var(--border);
  border-radius: 7px; padding: 8px 10px; resize: vertical; font: inherit;
}
#fbDlg .hint { margin: 0; color: var(--muted); font-size: 12px; }
#fbDlg .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
#fbDlg .ok { color: var(--good); font-size: 13px; margin: 0; }

@media (max-width: 700px) {
  .top, .filters { padding-left: 12px; padding-right: 12px; }
  main { padding: 12px 12px 30px; }
  .tile .val { font-size: 20px; }
}

/* AdSense slots — real units in live mode, dashed placeholder in admin preview. */
.ad-slot { margin: 0 0 16px; min-height: 90px; display: flex; align-items: center; justify-content: center; }
.ad-slot.preview { border: 1px dashed var(--border); border-radius: 10px; color: var(--muted); font-size: 12px; }
.ad-slot.preview::after { content: "Ad slot preview — admin only, no ad served"; }

/* Highest-OI calls/puts/all filter — same pill look as the ticker tabs. */
.oi-filter { display: flex; gap: 6px; margin-bottom: 10px; }
.oi-filter button {
  background: none; border: 1px solid var(--border); color: var(--ink-2);
  padding: 5px 13px; border-radius: 999px; font: inherit; font-size: 12.5px; cursor: pointer;
}
.oi-filter button:hover { color: var(--ink); border-color: var(--muted); }
.oi-filter button[aria-current="true"] { background: var(--surface); color: var(--ink); border-color: var(--muted); font-weight: 600; }

/* Premium RSVP teaser. */
.card.premium { border-color: var(--muted); }
.premium .hint { margin: 0 0 10px; color: var(--muted); font-size: 12px; }
.premium-list { margin: 0 0 14px; padding-left: 20px; font-size: 13px; color: var(--ink-2); }
.premium-list li { margin: 4px 0; }
.premium-list b { color: var(--ink); }
.premium-form { display: flex; gap: 8px; flex-wrap: wrap; }
.premium-form input[type="email"] {
  flex: 1; min-width: 200px; background: var(--page); color: var(--ink);
  border: 1px solid var(--border); border-radius: 7px; padding: 7px 10px; font: inherit;
}
.premium-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.premium-form button { font-weight: 600; }
.premium .ok { color: var(--good); font-size: 13px; margin: 8px 0 0; }
.premium #premiumMsg.err { margin: 8px 0 0; }