:root {
  --bg: #14283c;
  --card: #1b3248;
  --line: #2a4560;
  --divider: #46698c;
  --text: #f0f8ff;
  --muted: #9fb3c8;
  --accent: #4fb3ff;
  --down: #3ecf6e;
  --up: #ff6b5b;
  --warn: #f5b942;
  --group-A: #c38bff;
  --group-B: #ff5fd2;
  --group-C: #4dd8e6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header, main { max-width: 1200px; margin: 0 auto; padding: 16px; }
header { padding-bottom: 0; }
h1 { font-size: 20px; margin: 8px 0 4px; }
.meta { color: var(--muted); margin: 0; }
.sep { margin: 0 6px; color: var(--line); }
.muted { color: var(--muted); }
.badge { padding: 1px 8px; border-radius: 10px; background: var(--line); color: var(--text); font-size: 12px; }
.badge.open { background: #1f6f43; }

.card { background: var(--card); border-radius: 10px; padding: 16px; margin-bottom: 16px; overflow-x: auto; }

table.coupon { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.coupon th { color: var(--muted); font-weight: 500; font-size: 12px; text-align: center; padding: 4px 6px; border-bottom: 1px solid var(--line); }
.coupon td { padding: 4px 6px; border-bottom: 1px solid var(--line); text-align: center; white-space: nowrap; }
.coupon .group { border-left: 1px solid var(--line); }
.coupon .num { color: var(--muted); width: 2em; }
.coupon .match { text-align: left; white-space: normal; min-width: 200px; }
.coupon .teams { font-weight: 500; }
.coupon .sub { color: var(--muted); font-size: 12px; }
.coupon small { display: block; font-size: 11px; opacity: .85; }
.coupon td.down, b.down { color: var(--down); }
.coupon td.up, b.up { color: var(--up); }
.coupon tr.missing .pct, .coupon tr.missing .odds { color: var(--muted); }

.tag { display: inline-block; margin-left: 6px; padding: 0 6px; border-radius: 8px; background: var(--line); color: var(--text); font-size: 11px; }
.tag.warn { background: var(--warn); color: #1b1b1b; }

button.pick {
  --value: #8aa0b5;
  width: 34px; height: 30px;
  border: 2px solid transparent;
  border-radius: 6px;
  background: var(--value);
  color: #10202f;
  font: 600 14px system-ui, sans-serif;
  cursor: pointer;
}
button.pick.off { background: transparent; border-color: var(--line); color: transparent; }
button.pick.group-A, button.pick.group-B, button.pick.group-C { color: #10202f; border-color: var(--text); }
button.pick.group-A { background: var(--group-A); }
button.pick.group-B { background: var(--group-B); }
button.pick.group-C { background: var(--group-C); }
button.pick.correct { outline: 2px solid var(--text); outline-offset: 2px; }
button.pick:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.group-A { color: var(--group-A); }
.group-B { color: var(--group-B); }
.group-C { color: var(--group-C); }

.legend { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 10px; color: var(--muted); font-size: 12px; }
.legend .scale { display: inline-flex; }
.legend .scale i { width: 14px; height: 10px; }

.filters { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 16px 32px; }
.filters .output { border-left: 1px solid var(--divider); padding-left: 32px; min-width: 0; }
.filters .grid { display: grid; grid-template-columns: max-content 140px 140px; gap: 8px 12px; align-items: center; }
.filters .head { color: var(--muted); font-size: 12px; }
.filters .hint { grid-column: 1 / -1; margin: -2px 0 6px; color: var(--muted); font-size: 12px; max-width: 52ch; }
.filters .derived-label { color: var(--muted); font-size: 12px; text-align: right; }
.filters .derived { color: var(--muted); font-size: 13px; padding: 0 9px; font-variant-numeric: tabular-nums; }
input {
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 6px 8px; font: inherit; width: 100%;
}
input:focus { outline: none; border-color: var(--accent); }

.actions { display: flex; gap: 8px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.actions button, .download {
  background: var(--line); color: var(--text); border: 0; border-radius: 6px;
  padding: 8px 14px; font: inherit; cursor: pointer; text-decoration: none;
}
.actions button.primary, .download { background: var(--accent); color: #0b1a28; font-weight: 600; }
.download { display: inline-block; max-width: 100%; overflow-wrap: anywhere; }
.download-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.copy-link { background: var(--line); color: var(--text); border: 0; border-radius: 6px; padding: 8px 14px; font: inherit; cursor: pointer; }
button:disabled { opacity: .6; cursor: progress; }

#result h2 { font-size: 16px; margin: 0 0 10px; }
.back-to-chart { background: none; border: 0; padding: 0; margin-bottom: 10px; color: var(--accent); font: inherit; cursor: pointer; }

.distribution { position: relative; }
.distribution h2 { font-size: 16px; margin: 0; }
.distribution h3 { font-size: 13px; font-weight: 500; color: var(--muted); margin: 12px 0 2px; }
.chart-head p { margin: 2px 0 8px; }
.chart { display: block; width: 100%; height: auto; }
.chart .axis text { fill: var(--muted); font-size: 11px; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; margin-bottom: 6px; }
.chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.chart-toggle { display: inline-flex; border: 1px solid var(--divider); border-radius: 6px; overflow: hidden; margin-top: 10px; font-size: 12px; }
.chart-toggle button { background: transparent; color: var(--text); border: 0; padding: 4px 10px; font: inherit; cursor: pointer; }
.chart-toggle button[aria-pressed="true"] { background: var(--line); }
.chart-tip { position: absolute; pointer-events: none; background: #0f1f2f; color: var(--text); border: 1px solid var(--divider);
             border-radius: 6px; padding: 6px 8px; font-size: 12px; line-height: 1.4; white-space: nowrap; z-index: 2; }
.steps { list-style: none; margin: 0 0 12px; padding: 0; }
.steps li { display: grid; grid-template-columns: 170px 90px 1fr; gap: 8px; align-items: center; padding: 2px 0; }
.steps .n { text-align: right; font-variant-numeric: tabular-nums; }
.steps .bar { height: 8px; background: var(--accent); border-radius: 4px; min-width: 1px; }
.error { color: var(--up); }
.stale { margin: 0 0 12px; padding: 6px 10px; border-radius: 6px; background: var(--warn); color: #1b1b1b; }
.new-version { margin: 0 0 12px; padding: 8px 12px; border-radius: 6px; background: var(--card); border: 1px solid var(--accent); }
.new-version button { margin: 0 8px; }
.hits { display: flex; gap: 16px; margin: 8px 0 12px; }
.hits b { font-size: 16px; }
table.details { border-collapse: collapse; font-variant-numeric: tabular-nums; margin-bottom: 12px; }
.details th, .details td { padding: 3px 10px; text-align: right; border-bottom: 1px solid var(--line); }
.details th { color: var(--muted); font-weight: 500; }
.details td:first-child { font-family: ui-monospace, monospace; text-align: left; letter-spacing: 1px; }

@media (max-width: 720px) {
  header, main { padding: 12px; }
  .coupon .wide { display: none; }
  .filters { grid-template-columns: 1fr; }
  .filters .output { border-left: 0; padding-left: 0; border-top: 1px solid var(--divider); padding-top: 16px; }
  .filters .grid { grid-template-columns: 1fr 1fr; }
  .filters .grid .name, .filters .derived-label { grid-column: 1 / -1; text-align: left; }
  .filters .grid .head { display: none; }
  .filters .grid > span:first-child { grid-column: 1 / -1; }
  .steps li { grid-template-columns: 1fr 80px; }
  .steps .bar { display: none; }
  .coupon .match { min-width: 120px; }
  .coupon td, .coupon th { padding: 4px 3px; }
  button.pick { width: 30px; }
}

@media (max-width: 520px) {
  .coupon .pin { display: none; }
}

.help { display: inline-block; vertical-align: 1px; }
button.help-button {
  width: 18px; height: 18px; padding: 0; border-radius: 50%;
  background: transparent; color: var(--muted); border: 1px solid var(--divider);
  font: 600 11px/16px system-ui, sans-serif; cursor: help;
}
button.help-button:hover, button.help-button[aria-expanded="true"] { color: var(--text); border-color: var(--accent); }
.help-text {
  position: fixed; z-index: 10; max-width: min(360px, calc(100vw - 32px));
  background: #0f1f2f; color: var(--text); border: 1px solid var(--divider); border-radius: 6px;
  padding: 8px 10px; font-size: 13px; font-weight: 400; line-height: 1.45; text-align: left; white-space: normal;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .4);
}
.filters .grid .name { display: flex; gap: 6px; align-items: center; }
.filters .limits-title { color: var(--muted); font-size: 12px; }