:root {
  --bg: #efebe2;
  --card: #fffdf8;
  --ink: #1f2328;
  --sub: #5c6369;
  --line: #ddd6c6;
  --felt: #1f5e46;
  --felt-ink: #ffffff;
  --best: #17713a;
  --best-bg: #e3f3e8;
  --ok: #8a5a00;
  --ok-bg: #fbf0d6;
  --ng: #b42318;
  --ng-bg: #fbe6e3;
  --chip: #eef2ef;
  --tile-face: #fbf7ec;
  --tile-face2: #f1e9d4;
  --tile-edge: #b8ab8c;
  --tile-back: #2c7a58;
  --m: #b3261e;
  --p: #1d4ea3;
  --s: #17703a;
  --z: #22252a;
  --red5: #d4231a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06), 0 4px 14px rgba(0, 0, 0, .05);
  --hw: clamp(21px, calc((100vw - 52px) / 14.7), 36px);
  --rw: clamp(17px, calc((100vw - 64px) / 15), 22px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121514;
    --card: #1b201e;
    --ink: #e8eae8;
    --sub: #a3aaa6;
    --line: #2f3633;
    --felt: #2c7a58;
    --chip: #26302c;
    --best: #5cd38a;
    --best-bg: #163323;
    --ok: #f0c35a;
    --ok-bg: #382d12;
    --ng: #ff8a7a;
    --ng-bg: #3b1915;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  padding-bottom: env(safe-area-inset-bottom);
}
button { font: inherit; color: inherit; }

.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px calc(10px) 16px;
  padding-top: calc(10px + env(safe-area-inset-top));
  background: var(--felt); color: var(--felt-ink);
}
.brand { font-weight: 800; font-size: 18px; letter-spacing: .02em; }
.brand span { font-size: 13px; margin: 0 1px; opacity: .85; }
.seg { display: inline-flex; background: rgba(0, 0, 0, .22); border-radius: 999px; padding: 3px; }
.seg button {
  border: 0; background: transparent; color: #e7f1ec; padding: 5px 14px; border-radius: 999px; font-weight: 700; cursor: pointer; min-width: 58px;
}
.seg button[aria-pressed="true"] { background: #fff; color: var(--felt); }

main { max-width: 560px; margin: 0 auto; padding: 12px 16px 8px; }
.foot {
  max-width: 560px; margin: 4px auto 24px; padding: 0 16px; display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center;
  color: var(--sub); font-size: 13px;
}
.linkish { background: none; border: 0; padding: 0; color: var(--felt); text-decoration: underline; cursor: pointer; font-size: 13px; }
@media (prefers-color-scheme: dark) { .linkish { color: #7fd1a8; } }
#ver { margin-left: auto; }

.progress { display: flex; align-items: center; gap: 10px; margin: 2px 0 10px; color: var(--sub); font-size: 13px; }
.dots { display: flex; gap: 5px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.dot.now { background: var(--felt); box-shadow: 0 0 0 3px rgba(31, 94, 70, .2); }
.dot.best { background: var(--best); }
.dot.ok { background: var(--ok); }
.dot.ng { background: var(--ng); }

.card { background: var(--card); border-radius: 14px; box-shadow: var(--shadow); padding: 14px; margin-bottom: 12px; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; font-weight: 700; }
.meta .muted { font-weight: 500; color: var(--sub); font-size: 13px; }
.dora { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; font-size: 13px; color: var(--sub); }

.players { margin-top: 10px; display: grid; gap: 10px; }
.pl { border-top: 1px solid var(--line); padding-top: 9px; }
.pl-head { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; font-size: 14px; }
.pl-name { font-weight: 700; }
.pts { font-variant-numeric: tabular-nums; font-weight: 700; margin-left: auto; }
.badge { display: inline-flex; align-items: center; gap: 2px; font-size: 12px; font-weight: 700; padding: 1px 7px; border-radius: 999px; background: var(--chip); color: var(--sub); }
.badge.oya { background: #fde9c9; color: #7a4a00; }
.badge.rch { background: var(--ng); color: #fff; }
.badge.yaki { background: #f6e3ef; color: #7a2457; }
@media (prefers-color-scheme: dark) {
  .badge.oya { background: #4a3615; color: #ffd591; }
  .badge.yaki { background: #43213a; color: #f5b6dc; }
}
.pl-body { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-top: 6px; }
.river { display: flex; flex-wrap: wrap; gap: 2px; max-width: calc(var(--rw) * 6.4 + 12px); }
.river.empty { color: var(--sub); font-size: 12px; max-width: none; }
.nuki { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 2px; max-width: 48%; }
.nuki.mine { justify-content: flex-start; max-width: none; margin-top: 4px; }
.nuki-label { font-size: 11px; color: var(--sub); margin-right: 3px; }
.nuki .tile { --w: var(--rw); box-shadow: 0 1px 0 var(--tile-edge); }
.tile.flower { color: #a8285f; background: linear-gradient(180deg, #fff6fa, #f6e4ec); }

/* ---- 牌 ---- */
.tile {
  --w: var(--hw);
  position: relative; display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  width: var(--w); height: calc(var(--w) * 1.36);
  background: linear-gradient(180deg, var(--tile-face), var(--tile-face2));
  border: 1px solid var(--tile-edge);
  border-radius: calc(var(--w) * .15);
  box-shadow: 0 calc(var(--w) * .08) 0 var(--tile-back);
  color: var(--z); line-height: 1; font-weight: 800; user-select: none; flex: none;
  vertical-align: bottom;
}
.river .tile { --w: var(--rw); box-shadow: 0 1px 0 var(--tile-edge); }
.dora .tile, .inline .tile { --w: 20px; box-shadow: 0 1px 0 var(--tile-edge); vertical-align: middle; }
.tile .n { font-size: calc(var(--w) * .66); }
.tile .s { font-size: calc(var(--w) * .34); margin-top: calc(var(--w) * .05); font-weight: 700; }
.tile.m { color: var(--m); }
.tile.p { color: var(--p); }
.tile.s { color: var(--s); }
.tile.m .n { font-size: calc(var(--w) * .56); }
.tile.z .h { font-size: calc(var(--w) * .64); }
.tile.hatsu { color: var(--s); }
.tile.chun { color: var(--red5); }
.tile.haku::after { content: ""; position: absolute; inset: 24% 22%; border: calc(var(--w) * .07) solid #4f7fca; border-radius: 2px; }
.tile.red { background: linear-gradient(180deg, #fff4f1, #f6e0da); }
.tile.red .n { color: var(--red5); }
.tile.red::before { content: ""; position: absolute; top: calc(var(--w) * .1); right: calc(var(--w) * .1); width: calc(var(--w) * .16); height: calc(var(--w) * .16); border-radius: 50%; background: var(--red5); }
.tile.side { transform: rotate(-90deg); margin: 0 calc(var(--w) * .2); }
.tile.after { opacity: .62; }

/* ---- 手牌 ---- */
.q { font-weight: 700; margin: 4px 0 8px; }
.q small { display: block; font-weight: 500; color: var(--sub); font-size: 12.5px; }
.hand { display: flex; align-items: flex-end; gap: 1px; padding: 12px 0 4px; min-height: calc(var(--hw) * 1.36 + 24px); }
.hand .gap { width: calc(var(--hw) * .45); flex: none; }
.tbtn { display: inline-flex; border: 0; background: none; padding: 0; margin: 0; cursor: pointer; border-radius: 4px; transition: transform .12s ease; -webkit-tap-highlight-color: transparent; }
.tbtn.sel { transform: translateY(-10px); }
.tbtn.sel .tile { outline: 2px solid var(--felt); outline-offset: 1px; }
.tbtn:focus-visible { outline: 2px solid var(--felt); outline-offset: 2px; }

.actions { display: flex; gap: 10px; align-items: center; margin-top: 12px; }
.riichi {
  border: 2px solid var(--ng); color: var(--ng); background: transparent; border-radius: 999px; padding: 8px 16px; font-weight: 800; cursor: pointer; min-height: 44px;
}
.riichi[aria-pressed="true"] { background: var(--ng); color: #fff; }
.go {
  flex: 1; border: 0; border-radius: 12px; padding: 12px 16px; min-height: 48px; font-weight: 800; font-size: 16px; cursor: pointer;
  background: var(--felt); color: #fff;
}
.go:disabled { opacity: .4; cursor: default; }
.choices { display: grid; gap: 10px; margin-top: 12px; }
.choice { border: 2px solid var(--felt); background: transparent; color: var(--felt); border-radius: 12px; padding: 12px; font-weight: 800; font-size: 16px; min-height: 48px; cursor: pointer; }
@media (prefers-color-scheme: dark) { .choice { color: #7fd1a8; border-color: #3e8f6b; } }

/* ---- 結果 ---- */
.verdict { border-radius: 12px; padding: 12px 14px; margin-bottom: 10px; }
.verdict h2 { margin: 0; font-size: 20px; }
.verdict.best { background: var(--best-bg); color: var(--best); }
.verdict.ok { background: var(--ok-bg); color: var(--ok); }
.verdict.ng { background: var(--ng-bg); color: var(--ng); }
.verdict p { margin: 4px 0 0; color: var(--ink); font-size: 14px; }
.verdict ul { margin: 6px 0 0; padding-left: 18px; color: var(--ink); font-size: 14px; }
.sec { margin-top: 14px; }
.sec h3 { margin: 0 0 6px; font-size: 13px; color: var(--sub); letter-spacing: .04em; }
.where { display: grid; grid-template-columns: auto 1fr; gap: 3px 10px; font-size: 14px; margin: 0; }
.where dt { color: var(--sub); white-space: nowrap; }
.where dd { margin: 0; }
.reasons { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.reasons li { font-size: 14px; display: flex; gap: 8px; align-items: flex-start; }
.art {
  flex: none; border: 0; border-radius: 6px; background: var(--felt); color: #fff; font-size: 12px; font-weight: 800; padding: 2px 7px; cursor: pointer; margin-top: 1px;
}
.art.plain { background: var(--chip); color: var(--sub); cursor: default; }
.arttext { display: block; margin-top: 4px; padding: 6px 8px; border-left: 3px solid var(--felt); background: var(--chip); border-radius: 0 6px 6px 0; font-size: 13px; color: var(--ink); }
.theme { font-size: 13px; color: var(--sub); margin-top: 12px; }
details.all { margin-top: 12px; font-size: 13px; }
details.all summary { cursor: pointer; color: var(--sub); }
.ctable { width: 100%; border-collapse: collapse; margin-top: 6px; }
.ctable th, .ctable td { text-align: left; vertical-align: top; padding: 5px 4px; border-top: 1px solid var(--line); }
.ctable th { color: var(--sub); font-weight: 600; font-size: 12px; white-space: nowrap; }
.ctable tr.isbest td { background: var(--best-bg); }
.ctable tr.isok td { background: var(--ok-bg); }
.ctable tr.mine td:first-child { box-shadow: inset 3px 0 0 var(--ink); }
.ctable .tile { --w: 18px; box-shadow: 0 1px 0 var(--tile-edge); }
.next { margin-top: 14px; width: 100%; }

/* ---- まとめ・本 ---- */
.big { font-size: 34px; font-weight: 900; margin: 0; }
.list { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 6px; }
.list li { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.lv { font-weight: 900; width: 1.6em; text-align: center; }
.lv.best { color: var(--best); }
.lv.ok { color: var(--ok); }
.lv.ng { color: var(--ng); }
.btnrow { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.btn2 { border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 10px 14px; min-height: 44px; cursor: pointer; font-weight: 700; }
.book ol { padding-left: 1.6em; margin: 6px 0 0; }
.book li { margin: 6px 0; font-size: 14px; }
.ttable { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 12px; line-height: 1.45; margin-top: 6px; }
.ttable th, .ttable td { border: 1px solid var(--line); padding: 5px 3px; text-align: center; word-break: break-all; }
.ttable th { background: var(--chip); font-weight: 700; }
.ttable thead th:first-child { width: 23%; }
.ttable th small { display: block; font-weight: 500; color: var(--sub); font-size: 10px; }
.ttable td.fold { color: var(--sub); }
.ttable td.push { color: var(--best); font-weight: 700; }
.note { font-size: 12.5px; color: var(--sub); margin: 6px 0 0; }
.scroll { overflow-x: auto; }