:root {
  color-scheme: light dark;
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-2: #f0f4f1;
  --text: #18231c;
  --muted: #657168;
  --border: #d9e1dc;
  --accent: #217a51;
  --accent-strong: #17613f;
  --danger-bg: #fff0f0;
  --danger: #9f2525;
  --red-suit: #bd2d35;
  --shadow: 0 12px 32px rgba(31, 52, 40, .08);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.page { width: min(1180px, calc(100% - 34px)); margin: 0 auto; padding: 46px 0 70px; }
.hero { max-width: 850px; margin-bottom: 24px; }
.eyebrow { margin: 0 0 7px; color: var(--accent); font-size: .75rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.7rem); line-height: 1.03; letter-spacing: -.045em; }
h2 { margin: 0 0 14px; font-size: 1.22rem; }
h3 { font-size: .95rem; }
.lead { max-width: 760px; margin: 16px 0 0; color: var(--muted); line-height: 1.65; }
.panel { border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow); }
.form-panel { padding: 20px; }
.generator-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 14px; align-items: end; }
label { display: grid; gap: 7px; }
label span { color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .03em; }
input { width: 100%; min-height: 46px; padding: 0 12px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface-2); color: var(--text); font: inherit; font-size: 1rem; }
button, .button { min-height: 46px; padding: 0 18px; border: 0; border-radius: 11px; background: var(--accent); color: white; font: inherit; font-weight: 800; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
button:hover, .button:hover { background: var(--accent-strong); }
.button.secondary { min-height: 38px; background: var(--surface-2); border: 1px solid var(--border); color: var(--accent); }
.button.secondary:hover { border-color: var(--accent); }
.config-note { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 15px; color: var(--muted); font-size: .83rem; }
.api-panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center; margin-top: 18px; padding: 20px; }
.api-panel p:not(.eyebrow) { margin: 0; color: var(--muted); line-height: 1.55; }
.api-endpoints { display: grid; gap: 9px; }
.api-endpoints a { padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2); color: var(--accent); text-decoration: none; white-space: nowrap; }
.api-endpoints a:hover { border-color: var(--accent); }
.message { margin-top: 18px; padding: 14px 16px; border-radius: 12px; }
.error { color: var(--danger); background: var(--danger-bg); border: 1px solid #efc4c4; }
.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; margin-top: 20px; }
.summary-grid article { padding: 17px; background: var(--surface); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); display: grid; gap: 5px; }
.summary-grid span { color: var(--muted); font-size: .74rem; font-weight: 750; text-transform: uppercase; letter-spacing: .05em; }
.summary-grid strong { font-size: 1.25rem; }
.statistics-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.stat-panel, .histogram-panel { padding: 20px; }
.hcp-averages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.hcp-averages div { padding: 13px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); display: grid; gap: 3px; }
.hcp-averages span { color: var(--muted); font-size: .75rem; font-weight: 800; }
.hcp-averages strong { font-size: 1.1rem; }
.compact-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.compact-table th, .compact-table td { padding: 7px 8px; border-bottom: 1px solid var(--border); text-align: right; }
.compact-table th:first-child, .compact-table td:first-child { text-align: left; }
.histogram-panel { margin-top: 18px; }
.histogram { display: grid; gap: 6px; }
.hist-row { display: grid; grid-template-columns: 32px minmax(80px, 1fr) 140px; gap: 10px; align-items: center; font-size: .8rem; }
.hist-label { text-align: right; font-weight: 800; }
progress { width: 100%; height: 13px; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; background: var(--surface-2); }
progress::-webkit-progress-bar { background: var(--surface-2); }
progress::-webkit-progress-value { background: var(--accent); }
progress::-moz-progress-bar { background: var(--accent); }
.hist-value { color: var(--muted); white-space: nowrap; }
.export-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; padding: 14px; }
.boards { display: grid; gap: 22px; margin-top: 22px; }
.board { overflow: hidden; }
.board-header { display: flex; justify-content: space-between; gap: 20px; padding: 20px 22px; border-bottom: 1px solid var(--border); background: linear-gradient(135deg, var(--surface), var(--surface-2)); }
.board-number { color: var(--accent); font-weight: 850; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.board-header h2 { margin: 3px 0 0; font-size: 1.3rem; }
dl { display: flex; gap: 24px; margin: 0; }
dl div { display: grid; gap: 3px; }
dt { color: var(--muted); font-size: .7rem; font-weight: 750; text-transform: uppercase; }
dd { margin: 0; font-weight: 850; }
.table-layout { display: grid; grid-template-columns: minmax(240px, 1fr) 155px minmax(240px, 1fr); grid-template-areas: ". north ." "west center east" ". south ."; gap: 14px; align-items: center; padding: 24px; }
.north { grid-area: north; }.east { grid-area: east; }.south { grid-area: south; }.west { grid-area: west; }
.hand { padding: 14px 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-2); min-width: 0; }
.hand header { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.hand header span { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.cards { display: grid; grid-template-columns: 22px 1fr; gap: 7px; line-height: 1.55; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.suit { font-size: 1.12rem; line-height: 1.35; }.red { color: var(--red-suit); }.black { color: var(--text); }
.table-center { grid-area: center; width: 145px; height: 110px; display: grid; grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(3, 1fr); place-items: center; border-radius: 42%; background: var(--accent); color: #fff; font-weight: 900; box-shadow: inset 0 0 0 8px rgba(255,255,255,.1); }
.table-center span:nth-child(1), .table-center span:nth-child(4) { grid-column: 1 / -1; }
.format-details { border-top: 1px solid var(--border); padding: 14px 20px 18px; }
.format-details summary { cursor: pointer; color: var(--accent); font-weight: 800; }
.format-details h3 { margin: 16px 0 7px; }
pre { overflow-x: auto; padding: 14px; border-radius: 10px; background: #111813; color: #e9f3ec; font-size: .78rem; line-height: 1.5; }
@media (max-width: 900px) {
  .generator-form { grid-template-columns: 1fr 1fr; }
  .generator-form button { grid-column: 1 / -1; }
  .summary-grid { grid-template-columns: repeat(3, 1fr); }
  .statistics-layout { grid-template-columns: 1fr; }
  .table-layout { grid-template-columns: 1fr 90px 1fr; grid-template-areas: "north north north" "west center east" "south south south"; }
  .table-center { width: 86px; height: 86px; }
  .api-panel { grid-template-columns: 1fr; }
  .api-endpoints a { white-space: normal; }
}
@media (max-width: 640px) {
  .page { width: min(100% - 20px, 1180px); padding-top: 24px; }
  .generator-form { grid-template-columns: 1fr; }
  .generator-form button { grid-column: auto; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .board-header { display: grid; }
  dl { justify-content: space-between; }
  .table-layout { grid-template-columns: 1fr; grid-template-areas: "north" "east" "south" "west"; padding: 14px; }
  .table-center { display: none; }
  .hcp-averages { grid-template-columns: repeat(2, 1fr); }
  .hist-row { grid-template-columns: 28px 1fr; }
  .hist-value { grid-column: 2; }
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#0f1411; --surface:#171d19; --surface-2:#202823; --text:#edf3ef; --muted:#a2ada6; --border:#323c35; --accent:#48a97c; --accent-strong:#358863; --danger-bg:#331b1b; --danger:#ffb1b1; --red-suit:#ff7979; --shadow:0 12px 32px rgba(0,0,0,.25); }
}