:root {
  --bg: #f3efe6;
  --ink: #2a241c;
  --muted: #7a6f60;
  --panel: #fffaf0;
  --line: #d9cfbd;
  --wood: #e2b76a;
  --wood2: #d4a554;
  --grid: #5b4320;
  --accent: #b5482a;
  --accent-ink: #fff;
  --black-team: #222;
  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  --series-b: #2a78d6;
  --series-w: #eb6834;
  --grid-soft: #e6dccb;
  --white-team: #f7f7f2;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #1b1916;
    --ink: #ece4d6;
    --muted: #a59a88;
    --panel: #26231f;
    --line: #3d3830;
    --accent: #d8673f;
    --series-b: #3987e5;
    --series-w: #d95926;
    --grid-soft: #3a352d;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1b1916; --ink: #ece4d6; --muted: #a59a88; --panel: #26231f; --line: #3d3830; --accent: #d8673f;
  --series-b: #3987e5; --series-w: #d95926; --grid-soft: #3a352d;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
}
.app { max-width: 980px; margin: 0 auto; padding-block: 16px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.top { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.top h1 { margin: 0; font-family: var(--font-display); font-weight: 700; font-size: 30px; letter-spacing: .08em; text-wrap: balance; }
.sub { margin: 0; color: var(--muted); font-size: 14px; }

.play { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; align-items: start; }
@media (max-width: 760px) { .play { grid-template-columns: 1fr; } }

.board-wrap { position: relative; width: 100%; max-width: 620px; margin: 0 auto; }
#board { width: 100%; height: auto; display: block; touch-action: manipulation; user-select: none; -webkit-user-select: none; }
.toast {
  position: absolute; left: 50%; top: 12%; transform: translate(-50%, 0);
  background: rgba(30, 24, 16, .88); color: #fff; padding: 14px 20px; border-radius: 10px;
  font-size: 18px; text-align: center; pointer-events: none; max-width: 85%;
}

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.players { display: grid; gap: 6px; }
.player { display: grid; grid-template-columns: 22px 1fr auto; grid-template-rows: auto auto; align-items: center; column-gap: 8px; padding: 8px 10px; border-radius: 8px; border: 2px solid transparent; }
.player.turn { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.player .pname { font-weight: 700; }
.player .pscore { font-size: 18px; letter-spacing: 2px; font-weight: 700; font-variant-numeric: tabular-nums; }
.player .pinfo { grid-column: 2 / 4; font-size: 12px; color: var(--muted); min-height: 0; }
.stone { width: 18px; height: 18px; border-radius: 50%; display: inline-block; }
.stone.b { background: radial-gradient(circle at 35% 35%, #666, #111 60%); }
.stone.w { background: radial-gradient(circle at 35% 35%, #fff, #d8d8d0 70%); border: 1px solid #aaa; }

.status { font-size: 15px; min-height: 2.6em; }
.buttons { display: flex; gap: 8px; flex-wrap: wrap; }
button, select {
  font: inherit; font-size: 14px; padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.active { outline: 2px solid var(--accent); outline-offset: 1px; }

details summary { cursor: pointer; font-weight: 700; font-size: 14px; }
.settings label { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 8px; font-size: 14px; }
.settings label.check { justify-content: flex-start; }
.rules div { font-size: 13px; color: var(--ink); }
.rules ul { padding-left: 1.2em; margin: 6px 0; }
.rules li { margin: 3px 0; }

/* SVG board */
.grid-line { stroke: var(--grid); stroke-width: .25; }
.hoshi { fill: var(--grid); }
.coord { fill: #6b5330; font-size: 2.2px; font-family: system-ui, sans-serif; text-anchor: middle; dominant-baseline: central; }
.ghost { opacity: .45; pointer-events: none; }
.last-mark { fill: none; stroke-width: .5; pointer-events: none; }
.terr { pointer-events: none; }
.hit { fill: transparent; cursor: pointer; }
.atari { pointer-events: none; animation: pulse 1.2s ease-in-out infinite; }
.atari-lib { pointer-events: none; }
@keyframes pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .atari { animation: none; } }
.pip { color: var(--muted); }
.pip.on { color: var(--ink); }
.pip.gem { color: #d81b4a; }
.gem { pointer-events: none; }
.pip.bonus { color: #c08a1e; }
.hint { pointer-events: none; }
.hint-num { fill: #fff; font-size: 3.2px; font-weight: 700; text-anchor: middle; dominant-baseline: central; pointer-events: none; font-family: system-ui, sans-serif; }
.gem-ring { filter: drop-shadow(0 0 .4px rgba(0,0,0,.6)); }

/* 遊び方ガイド */
.guide { position: fixed; inset: 0; background: rgba(20, 16, 10, .55); display: flex; align-items: center; justify-content: center; z-index: 10;
  padding: max(16px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); }
.guide[hidden] { display: none; }
.guide-card { background: var(--panel); color: var(--ink); border-radius: 14px; max-width: 440px; width: 100%; padding: 18px 18px 14px; box-shadow: 0 10px 40px rgba(0,0,0,.3); }
.guide-step h2 { margin: 0 0 10px; font-family: var(--font-display); font-size: 19px; text-wrap: balance; }
.guide-step p { margin: 10px 0 0; font-size: 14px; }
.guide-fig { display: flex; justify-content: center; }
.guide-fig .mini { width: 150px; height: 150px; }
.guide-big { font-size: 26px; letter-spacing: 4px; padding: 30px 0; color: var(--ink); }
.guide-nav { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; gap: 8px; }
.guide-dots { color: var(--muted); font-size: 12px; letter-spacing: 2px; }

/* 演出 */
.fx-stone { pointer-events: none; transform-box: fill-box; transform-origin: center; animation: fxfade .6s ease-out forwards; }
.fx-burst { pointer-events: none; transform-box: fill-box; transform-origin: center; animation: fxburst .7s ease-out forwards; }
.fx-text { pointer-events: none; fill: #d81b4a; stroke: #fff; stroke-width: .35px; paint-order: stroke; font: 700 4px system-ui, sans-serif; text-anchor: middle; animation: fxrise .9s ease-out forwards; }
@keyframes fxfade { to { opacity: 0; transform: scale(.3); } }
@keyframes fxburst { from { opacity: 1; transform: scale(.6); } to { opacity: 0; transform: scale(2.4); } }
@keyframes fxrise { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(-5px); } }
@media (prefers-reduced-motion: reduce) { .fx-stone, .fx-burst, .fx-text { animation-duration: .01s; } }

/* 振り返り */
.result { border-top: 1px solid var(--line); padding-top: 10px; display: grid; gap: 6px; }
.result[hidden] { display: none; }
.result-head { font-weight: 700; font-size: 14px; }
.legend { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 4px; }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin: 0 2px 0 6px; vertical-align: -1px; }
.sw-b { background: var(--series-b); }
.sw-w { background: var(--series-w); }
.legend .sw:first-child { margin-left: 0; }
.chart-wrap { position: relative; }
#race { width: 100%; height: auto; display: block; touch-action: none; }
#race .grid { stroke: var(--grid-soft); stroke-width: 1; }
#race .goal-line { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
#race .axis { fill: var(--muted); font-size: 10px; font-family: system-ui, sans-serif; }
#race .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
#race .line-b { stroke: var(--series-b); }
#race .line-w { stroke: var(--series-w); }
#race .dot-b { fill: var(--series-b); stroke: var(--panel); stroke-width: 2; }
#race .dot-w { fill: var(--series-w); stroke: var(--panel); stroke-width: 2; }
#race .dlabel { fill: var(--ink); font-size: 11px; font-weight: 700; font-family: system-ui, sans-serif; }
#race .cross { stroke: var(--muted); stroke-width: 1; }
.tip { position: absolute; top: -4px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 4px 8px; font-size: 12px; pointer-events: none; box-shadow: 0 2px 8px rgba(0,0,0,.12); white-space: nowrap; }
.race-table summary { font-size: 12px; font-weight: 400; color: var(--muted); }
.race-table table { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 4px; }
.race-table th, .race-table td { text-align: left; padding: 2px 4px; border-bottom: 1px solid var(--line); }

/* スマホ用の点数バー（盤の上） */
.mbar { display: none; }
@media (max-width: 760px) {
  .mbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-weight: 700; font-size: 18px; font-variant-numeric: tabular-nums; }
  .mb { display: flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; border: 2px solid transparent; }
  .mb.turn { border-color: var(--accent); }
  .mb-goal { font-size: 12px; color: var(--muted); font-weight: 400; }
  .top { margin-bottom: 4px; }
  .top h1 { font-size: 22px; }
  .toast { font-size: 14px; padding: 8px 12px; top: 4%; }
}
.pending { pointer-events: none; }
button:focus-visible, select:focus-visible, summary:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }