/* Layout: framed picture as the hero, a narrow brass-trimmed control column beside it on wide screens, stacked on phones. */
  :root {
    --ground: #e8e6e2;
    --panel: #f5f3f0;
    --ink: #2b1e1a;
    --muted: #6b5d56;
    --line: #cdc4b8;
    --brass: #8c6522;
    --brass-hi: #d9b56a;
    --brass-lo: #7a5619;
    --on-brass: #fffaf0;
    --lav: #66559a;
    --slot: #cfc8bf;
    --font-display: "Bodoni Moda", "Didot", "Bodoni 72", Georgia, serif;
    --font-body: "Karla", system-ui, -apple-system, "Segoe UI", sans-serif;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground: #1a1210; --panel: #251b18; --ink: #f1e9d9; --muted: #aa9b8c; --line: #3d2d27;
      --brass: #d3a557; --brass-hi: #ecc982; --brass-lo: #9a7430; --on-brass: #1a1210;
      --lav: #ab9bd8; --slot: #110b0a; color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --ground: #1a1210; --panel: #251b18; --ink: #f1e9d9; --muted: #aa9b8c; --line: #3d2d27;
    --brass: #d3a557; --brass-hi: #ecc982; --brass-lo: #9a7430; --on-brass: #1a1210;
    --lav: #ab9bd8; --slot: #110b0a; color-scheme: dark;
  }

  * { box-sizing: border-box; }
  body {
    background: var(--ground);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    padding-block: 28px 40px;
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
  }
  .wrap { max-width: 1080px; margin: 0 auto; }
  header { margin-bottom: 20px; }
  .eyebrow {
    font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--lav); font-weight: 700; margin: 0 0 6px;
  }
  h1 {
    font-family: var(--font-display); font-weight: 700; font-size: clamp(32px, 6vw, 52px);
    line-height: 1.05; margin: 0 0 8px; text-wrap: balance; letter-spacing: -0.01em;
  }
  .lede { margin: 0; color: var(--muted); max-width: 52ch; }

  .layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; align-items: start; }
  @media (min-width: 900px) { .layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 28px; } }

  .frame {
    padding: 10px;
    background: linear-gradient(135deg, var(--brass-hi), var(--brass) 45%, var(--brass-lo));
    border-radius: 3px;
    box-shadow: 0 10px 30px rgba(20, 10, 5, 0.28);
  }
  .board {
    position: relative; width: 100%; aspect-ratio: 3 / 2;
    background: var(--slot); overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.5);
  }
  .tile {
    position: absolute; left: 0; top: 0; padding: 0; border: 0; margin: 0;
    background-image: var(--img); background-repeat: no-repeat;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.38), inset 1px 1px 0 rgba(255,255,255,0.12);
    transition: transform 0.16s ease-out, opacity 0.5s ease;
    cursor: pointer; touch-action: manipulation; font: inherit; color: inherit;
  }
  .tile:focus-visible { outline: 3px solid var(--lav); outline-offset: -3px; z-index: 3; }
  .tile.ghost { opacity: 0; pointer-events: none; }
  .tile .num {
    position: absolute; left: 4px; bottom: 4px; min-width: 20px; padding: 1px 5px;
    font: 700 11px/1.4 var(--font-body); font-variant-numeric: tabular-nums;
    background: rgba(20, 12, 9, 0.78); color: #f1e3c0; border-radius: 2px; display: none;
  }
  .board.numbers .tile .num { display: block; }
  .board.won .tile { box-shadow: none; cursor: default; }
  .peek {
    position: absolute; inset: 0; background-image: var(--img); background-size: 100% 100%;
    opacity: 0; pointer-events: none; transition: opacity 0.2s ease; z-index: 4;
  }
  .peek.on { opacity: 1; }
  .banner {
    position: absolute; left: 0; right: 0; bottom: 0; z-index: 5; padding: 28px 16px 12px;
    background: linear-gradient(to top, rgba(18, 10, 8, 0.9), rgba(18, 10, 8, 0));
    color: #f6ecd6; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px;
  }
  .banner strong { font-family: var(--font-display); font-size: clamp(18px, 3.4vw, 26px); }
  .banner span { font-size: 14px; font-variant-numeric: tabular-nums; }

  .panel { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
  .stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); background: var(--panel); }
  .stat { padding: 10px 12px; min-width: 0; }
  .stat + .stat { border-left: 1px solid var(--line); }
  .stat dt { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0; }
  .stat dd { margin: 2px 0 0; font-family: var(--font-display); font-weight: 700; font-size: 24px; font-variant-numeric: tabular-nums; line-height: 1.2; }
  .stat dd small { font: 500 12px var(--font-body); color: var(--muted); }

  .group-label { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
  .seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--brass); }
  .seg button {
    font: 700 14px var(--font-body); padding: 8px 4px; background: transparent; color: var(--ink);
    border: 0; cursor: pointer; line-height: 1.25;
  }
  .seg button + button { border-left: 1px solid var(--brass); }
  .seg button small { display: block; font-weight: 400; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
  .seg button[aria-pressed="true"] { background: var(--brass); color: var(--on-brass); }
  .seg button[aria-pressed="true"] small { color: var(--on-brass); opacity: 0.85; }

  .actions { display: flex; flex-wrap: wrap; gap: 8px; }
  .btn {
    font: 700 14px var(--font-body); padding: 10px 16px; border: 1px solid var(--brass); background: transparent;
    color: var(--ink); cursor: pointer; flex: 1 1 auto;
  }
  .btn.primary { background: var(--brass); color: var(--on-brass); }
  .btn[aria-pressed="true"] { background: var(--lav); border-color: var(--lav); color: #fff; }
  button:focus-visible, .check input:focus-visible { outline: 3px solid var(--lav); outline-offset: 2px; }
  .check { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
  .check input { width: 18px; height: 18px; accent-color: var(--brass); margin: 0; }

  .note { font-size: 13px; color: var(--muted); margin: 0; }
  .note kbd {
    font: 700 11px var(--font-body); padding: 1px 5px; border: 1px solid var(--line); background: var(--panel); border-radius: 2px;
  }

  @media (prefers-reduced-motion: reduce) {
    .tile, .peek { transition: none; }
  }