:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d67;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --wash: rgba(11, 11, 11, 0.04);
  --accent: #2a78d6;
  --on-accent: #ffffff;
  --itm: rgba(42, 120, 214, 0.08);
  --pin: rgba(235, 104, 52, 0.12);
  --bad: #c62f2f;
  --calls: #2a78d6;
  --puts: #eb6834;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #9b9992;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --wash: rgba(255, 255, 255, 0.05);
    --accent: #3987e5;
    --itm: rgba(57, 135, 229, 0.12);
    --pin: rgba(217, 89, 38, 0.2);
    --bad: #e66767;
    --calls: #3987e5;
    --puts: #d95926;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 22px; font-weight: 600; }
h2 { font-size: 16px; font-weight: 600; }
a { color: var(--accent); }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button, input, select, textarea { font: inherit; color: inherit; }

input, select, textarea {
  background: var(--surface);
  border: 1px solid var(--axis);
  border-radius: 6px;
  padding: 7px 10px;
}

textarea { width: 100%; min-height: 72px; resize: vertical; }

button {
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  color: var(--on-accent);
  cursor: pointer;
  font-weight: 500;
  padding: 7px 14px;
}

button:disabled { cursor: default; opacity: 0.55; }

button.quiet {
  background: transparent;
  border: 1px solid var(--axis);
  color: var(--ink);
  font-weight: 400;
}

.status { color: var(--ink-2); min-height: 1.45em; }
.status.bad, .bad { color: var(--bad); }
.note { color: var(--muted); font-size: 13px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
  min-width: 0;
  padding: 16px;
}

/* Signing in */
.auth { margin: 12vh auto 0; max-width: 360px; width: calc(100% - 32px); }
.auth form { display: grid; gap: 12px; }
.auth label { color: var(--ink-2); display: grid; font-size: 13px; gap: 4px; }
.auth input { color: var(--ink); font-size: 15px; width: 100%; }

/* The shell */
header {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 10px 16px;
}

header nav { display: flex; flex: 1; gap: 4px; }

header nav a {
  border-radius: 6px;
  color: var(--ink-2);
  padding: 5px 12px;
  text-decoration: none;
}

header nav a:hover { background: var(--wash); }
header nav a[aria-current="page"] { background: var(--wash); color: var(--ink); font-weight: 600; }

.who { align-items: center; color: var(--ink-2); display: flex; font-size: 13px; gap: 10px; }
.who button { padding: 3px 10px; }

main { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); margin: 0 auto; max-width: 1360px; padding: 16px; }

/* Tables */
.scroll { overflow-x: auto; }

table { border-collapse: collapse; font-variant-numeric: tabular-nums; width: 100%; }

th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  text-align: left;
  white-space: nowrap;
}

th, td { border-bottom: 1px solid var(--grid); padding: 5px 10px; }
td { white-space: nowrap; }
td.wrap { max-width: 320px; overflow-wrap: anywhere; white-space: normal; }
td.number, th.number { text-align: right; }
tbody tr:last-child td { border-bottom: 0; }
tr.current td { background: var(--wash); }
tr.current td:first-child { font-weight: 600; }

/* Tickers */
.lookup { display: grid; gap: 8px; }
.row { align-items: center; display: flex; flex-wrap: wrap; gap: 8px 12px; }
.row .grow { flex: 1; }

/* Chains */
.desk { align-items: start; display: grid; gap: 16px; grid-template-columns: 240px minmax(0, 1fr); }
.detail { display: grid; gap: 16px; min-width: 0; transition: opacity 0.15s; }
.detail.busy { opacity: 0.55; }

.picker { align-content: start; padding: 10px; position: sticky; top: 8px; }
.picker input { width: 100%; }
.picker ul { display: grid; gap: 1px; list-style: none; margin: 0; max-height: 72vh; overflow-y: auto; padding: 0; }

.picker a {
  border-radius: 6px;
  color: var(--ink);
  display: grid;
  gap: 0 8px;
  grid-template-columns: 1fr auto;
  padding: 5px 8px;
  text-decoration: none;
}

.picker a:hover { background: var(--wash); }
.picker a[aria-current="true"] { background: var(--wash); font-weight: 600; }
.picker .name { color: var(--muted); font-size: 12px; font-weight: 400; grid-column: 1 / -1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.picker .price { color: var(--ink-2); font-variant-numeric: tabular-nums; font-weight: 400; }

/* The chain */
.chain th, .chain td { padding: 4px 8px; text-align: right; }
.chain th.side { color: var(--ink-2); font-size: 13px; font-weight: 600; text-align: center; }
.chain td.itm { background: var(--itm); }
.chain tr.pin td { background: var(--pin); }

/* Stays in view at either edge while a narrow screen scrolls the two sides of the chain past it. */
.chain .strike, .chain tr.pin td.strike {
  background: var(--surface);
  box-shadow: inset 1px 0 var(--grid), inset -1px 0 var(--grid);
  color: var(--ink);
  font-weight: 600;
  left: 0;
  position: sticky;
  right: 0;
  text-align: center;
}

.chain tr.pin td.strike { font-weight: 700; }

.switch { display: flex; gap: 4px; }
.switch button { background: transparent; border: 1px solid var(--axis); color: var(--ink-2); font-weight: 400; padding: 3px 10px; }
.switch button[aria-pressed="true"] { background: var(--wash); color: var(--ink); font-weight: 600; }

/* The max pain chart */
.legend { color: var(--ink-2); display: flex; flex-wrap: wrap; font-size: 13px; gap: 4px 16px; }
.legend span { align-items: center; display: inline-flex; gap: 6px; }
.legend i { border-radius: 2px; display: inline-block; height: 10px; width: 10px; }
.legend .calls { background: var(--calls); }
.legend .puts { background: var(--puts); }

.chart { min-width: 0; position: relative; }
.chart svg { display: block; touch-action: pan-y; width: 100%; }
.chart svg:focus-visible { outline-offset: 4px; }
.chart text { fill: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart text.marker { fill: var(--ink); font-weight: 600; }
.chart text.marker.close { fill: var(--ink-2); font-weight: 500; }
.chart .gridline { stroke: var(--grid); }
.chart .baseline { stroke: var(--axis); }
.chart .rule { stroke: var(--ink); }
.chart .rule.close { stroke: var(--ink-2); }
.chart .band { fill: var(--wash); }
.chart .calls { fill: var(--calls); }
.chart .puts { fill: var(--puts); }

.tip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.14);
  display: grid;
  font-size: 13px;
  gap: 2px;
  left: 0;
  min-width: 132px;
  padding: 7px 10px;
  pointer-events: none;
  position: absolute;
  top: 34px;
}

.tip b { font-variant-numeric: tabular-nums; font-weight: 600; }
.tip .head { color: var(--muted); font-size: 12px; }
.tip div { align-items: center; display: grid; gap: 6px; grid-template-columns: 14px auto 1fr; }
.tip i { border-radius: 1px; height: 2px; width: 14px; }
.tip i.calls { background: var(--calls); }
.tip i.puts { background: var(--puts); }
.tip i.total { background: var(--ink-2); }
.tip span { color: var(--ink-2); }

details summary { color: var(--ink-2); cursor: pointer; font-size: 13px; }
details .scroll { margin-top: 8px; max-height: 320px; overflow-y: auto; }

@media (max-width: 760px) {
  .desk { grid-template-columns: minmax(0, 1fr); }
  .picker { position: static; }
  .picker ul { max-height: 180px; }
}

@media (forced-colors: active) {
  .chart .calls, .legend .calls { fill: CanvasText; background: CanvasText; }
  .chart .puts, .legend .puts { fill: GrayText; background: GrayText; }
}