:root {
  color-scheme: light;
  --bg: #f3f5f2;
  --panel: #ffffff;
  --ink: #18231e;
  --muted: #69736d;
  --line: #d9dfda;
  --green: #176348;
  --green-dark: #0d4733;
  --gold: #d9a441;
  --red: #b43b32;
  --blue: #315da8;
  --purple: #7256a8;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 50% -20%, #fff 0, var(--bg) 48%); color: var(--ink); }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .48; }
.app-shell { width: min(1240px, 100%); margin: 0 auto; padding: 28px 22px 20px; }
.app-header { display: flex; align-items: end; justify-content: space-between; gap: 22px; margin-bottom: 22px; }
.eyebrow, .section-kicker { margin: 0 0 5px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1 { margin: 0; font-family: Georgia, serif; font-size: clamp(34px, 5vw, 52px); font-weight: 500; letter-spacing: -.04em; }
.subtitle { margin: 5px 0 0; color: var(--muted); }
.variant-toggle { display: flex; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.variant { min-height: 44px; padding: 0 18px; border: 0; border-right: 1px solid var(--line); background: #fff; color: var(--muted); font-weight: 700; }
.variant:last-child { border-right: 0; }
.variant.selected { background: var(--green); color: #fff; }
.calculator-panel, .results-panel, .card-bank-panel { min-width: 0; max-width: 100%; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.96); box-shadow: 0 12px 35px rgba(29,50,39,.06); }
.hands-grid { display: grid; grid-template-columns: 1fr 58px 1fr; padding: 22px; }
.hand-panel { min-width: 0; cursor: text; }
.section-heading, .section-heading > div, .results-heading, summary, .run-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.section-heading h2, .board-panel h2, .results-heading h2, summary h2 { margin: 0; font-size: 18px; }
.hand-number { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: #e8f0eb; color: var(--green); font-size: 11px; font-weight: 800; }
.small-actions { display: flex; gap: 4px; }
.small-actions button, .text-button { min-height: 32px; padding: 0 9px; border: 0; border-radius: 7px; background: transparent; color: var(--green); font-size: 12px; font-weight: 750; }
.small-actions button:hover, .text-button:hover { background: #edf3ef; }
.entry-label { display: block; margin: 18px 0 6px; color: var(--muted); font-size: 12px; font-weight: 700; }
.hand-input { position: relative; z-index: 2; display: block; width: 100%; min-width: 0; max-width: 100%; min-height: 58px; border: 2px solid #cbd4ce; border-radius: 10px; padding: 0 15px; background: #fff; color: var(--ink); font-size: 18px; font-weight: 750; letter-spacing: .02em; pointer-events: auto; user-select: text; cursor: text; }
.hand-input:hover { border-color: #8da99a; }
.hand-input:focus { border-color: var(--green); background: #fff; }
.hand-input:focus, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(49,93,168,.25); outline-offset: 2px; }
.hand-input.invalid { border-color: var(--red); box-shadow: 0 0 0 3px rgba(180,59,50,.1); }
.slot-row { display: grid; grid-template-columns: repeat(5, minmax(42px, 58px)); gap: 7px; margin-top: 12px; }
.card-slot, .playing-card, .card-back { display: grid; place-items: center; aspect-ratio: .72; min-width: 0; border-radius: 8px; font-weight: 850; }
.card-slot { border: 1px dashed #bbc5be; background: #f5f7f5; color: #89938c; }
.card-slot.filled { border-style: solid; color: #fff; }
.card-slot.active { box-shadow: 0 0 0 3px var(--gold); }
.token-any { background: #66716a !important; border-color: #515a54 !important; }
.token-rank { background: var(--purple) !important; border-color: #5d438e !important; }
.suit-s { background: #252a27 !important; border-color: #171a18 !important; }
.suit-h { background: var(--red) !important; border-color: #8f2d27 !important; }
.suit-d { background: var(--blue) !important; border-color: #24457d !important; }
.suit-c { background: #317544 !important; border-color: #245a33 !important; }
.field-error { min-height: 17px; margin: 6px 0 0; color: var(--red); font-size: 12px; }
.versus { display: grid; place-items: center; color: #9ca59f; font-family: Georgia, serif; font-style: italic; }
.versus span { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 50%; background: var(--bg); }
.board-panel { display: grid; grid-template-columns: minmax(180px,1fr) auto minmax(180px,1fr); align-items: center; gap: 20px; padding: 20px 22px; border-top: 1px solid var(--line); background: #f9faf8; }
.board-panel p { min-width: 0; margin: 0; color: var(--muted); font-size: 12px; text-align: right; overflow-wrap: anywhere; }
.board-row { display: flex; gap: 7px; }
.card-back { width: 42px; height: 58px; border: 2px solid #fff; outline: 1px solid #b9c7be; background: repeating-linear-gradient(45deg,#176348,#176348 5px,#1d7656 5px,#1d7656 10px); color: rgba(255,255,255,.8); box-shadow: 0 2px 5px rgba(0,0,0,.12); }
.run-bar { padding: 18px 22px; border-top: 1px solid var(--line); }
.run-bar > div { display: grid; gap: 3px; }
.run-bar span { color: var(--muted); font-size: 12px; }
.calculate { min-width: 190px; min-height: 50px; border: 0; border-radius: 9px; background: var(--green); color: #fff; font-weight: 800; box-shadow: 0 7px 18px rgba(23,99,72,.2); }
.calculate:not(:disabled):hover { background: var(--green-dark); transform: translateY(-1px); }
.results-panel { margin-top: 18px; padding: 22px; }
.hidden { display: none !important; }
.result-meta { color: var(--muted); font-size: 12px; text-align: right; }
.result-comparison { display: grid; grid-template-columns: 1fr minmax(120px, .55fr) 1fr; align-items: center; gap: 24px; margin-top: 20px; }
.result-card { display: grid; gap: 5px; }
.result-card > span { color: var(--muted); font-size: 11px; font-weight: 850; letter-spacing: .14em; }
.result-card > strong { font-family: Georgia, serif; font-size: clamp(42px, 7vw, 68px); font-weight: 500; letter-spacing: -.05em; }
.result-card > small { min-height: 20px; color: var(--muted); font-weight: 700; }
.hand-two-result { text-align: right; }
.breakdown { display: flex; gap: 13px; margin-top: 10px; color: var(--muted); font-size: 12px; }
.hand-two-result .breakdown { justify-content: flex-end; }
.breakdown b { color: var(--ink); }
.equity-bar { display: flex; height: 12px; overflow: hidden; border-radius: 99px; background: #e0e5e1; }
#equityBar1 { background: var(--green); }
#equityBar2 { background: var(--gold); }
.result-footer { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.card-bank-panel { margin-top: 18px; padding: 18px 22px 22px; }
summary { cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary > span { color: var(--muted); font-size: 12px; }
.card-bank { display: grid; grid-template-columns: repeat(13, minmax(38px, 1fr)); gap: 6px; margin-top: 17px; }
.playing-card { min-height: 48px; border: 2px solid transparent; color: #fff; }
.playing-card.used { opacity: .2; cursor: not-allowed; }
.playing-card:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 5px 12px rgba(0,0,0,.18); }
footer { display: flex; justify-content: space-between; padding: 20px 3px 0; color: var(--muted); font-size: 11px; }

@media (max-width: 800px) {
  .app-header { align-items: stretch; flex-direction: column; }
  .variant-toggle { align-self: flex-start; }
  .hands-grid { grid-template-columns: 1fr; gap: 14px; }
  .versus { height: 20px; }
  .versus span { width: 34px; height: 34px; }
  .board-panel { grid-template-columns: 1fr; text-align: center; }
  .board-row { justify-content: center; }
  .board-panel p { text-align: center; }
  .result-comparison { grid-template-columns: 1fr; gap: 12px; }
  .hand-two-result { text-align: left; }
  .hand-two-result .breakdown { justify-content: flex-start; }
  .equity-bar { grid-row: 2; }
  .card-bank { grid-template-columns: repeat(7, minmax(36px, 1fr)); }
}

@media (max-width: 520px) {
  .app-shell { padding: 16px 10px; }
  .hands-grid, .run-bar, .results-panel { padding: 16px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .run-bar { align-items: stretch; flex-direction: column; }
  .calculate { width: 100%; }
  .card-bank { grid-template-columns: repeat(4, 1fr); }
}