:root {
  --bg:        #1a1210;
  --bg2:       #241811;
  --card:      #33241c;
  --card2:     #3f2d22;
  --line:      #55402f;
  --ink:       #f6ecdd;
  --ink-dim:   #bda88f;
  --gold:      #ffcf6b;
  --gold-dim:  #c99a3f;
  --radius:    16px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI",
          "Yu Gothic", Meiryo, system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(120% 90% at 50% 0%, #2c1f18 0%, var(--bg) 70%);
  color: var(--ink);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100svh;
  display: flex;
  justify-content: center;
  padding: 18px 14px 32px;
}

.wrap {
  width: 100%;
  max-width: 660px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------- ヘッダ ---------- */
.head { text-align: center; }

.head h1 {
  margin: 0;
  font-size: clamp(26px, 6.4vw, 40px);
  letter-spacing: .06em;
  font-weight: 800;
  color: var(--gold);
  text-shadow: 0 2px 0 #6b4a1e, 0 0 26px rgba(255, 207, 107, .28);
}
.head h1 span { color: var(--ink); text-shadow: 0 2px 0 #000; }

.tag {
  margin: 6px 0 0;
  font-size: clamp(12px, 3.2vw, 14px);
  color: var(--ink-dim);
  letter-spacing: .04em;
}

/* ---------- HUD ---------- */
.hud {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.hud-item {
  flex: 1;
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 7px 10px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.hud-item span {
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-dim);
}
.hud-item b {
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.hud-item b i { font-style: normal; color: var(--gold); }
#hudTotal, #hudBest { color: var(--gold); }

.icon {
  flex: 0 0 auto;
  width: 46px;
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  font-size: 18px;
  cursor: pointer;
  transition: transform .12s, filter .12s;
}
.icon:hover { filter: brightness(1.18); }
.icon:active { transform: scale(.94); }
.icon[aria-pressed="false"] { opacity: .42; }

/* ---------- ステージ ---------- */
.stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .55), inset 0 0 0 1px rgba(255, 255, 255, .04);
  background: var(--bg2);
}

#cv {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
}
#cv.aiming { cursor: crosshair; }

/* ---------- オーバーレイ ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(16, 10, 8, .74);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  animation: fade .28s ease both;
}
.overlay[hidden] { display: none; }

/* ゲームのページのオーバーレイは、盤面ではなく画面いっぱいに出す。
   結果画面はランキング登録とシェアが載って縦に長く、1:1 の盤面には収まらないため。 */
.overlay.sheet { position: fixed; z-index: 40; padding: 20px 14px; }
.overlay.sheet .card { max-height: calc(100svh - 40px); }

@keyframes fade { from { opacity: 0 } to { opacity: 1 } }
@keyframes rise { from { opacity: 0; transform: translateY(14px) } to { opacity: 1; transform: none } }
@keyframes pop  { 0% { transform: scale(.4) } 60% { transform: scale(1.25) } 100% { transform: scale(1) } }

.card {
  width: min(430px, 100%);
  max-height: 100%;
  overflow-y: auto;
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .6);
  animation: rise .34s cubic-bezier(.2, .9, .3, 1) both;
}

.card h2 {
  margin: 0 0 4px;
  font-size: 22px;
  color: var(--gold);
  letter-spacing: .05em;
}
.card .sub { margin: 0 0 16px; font-size: 13px; color: var(--ink-dim); }

.rules {
  text-align: left;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink);
  background: rgba(0, 0, 0, .22);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 12px;
  padding: 12px 14px 12px 30px;
  margin: 0 0 16px;
}
.rules li::marker { color: var(--gold-dim); }

.lead {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-dim);
  margin: 16px 0 8px;
}

.diffs { display: grid; gap: 8px; margin-bottom: 18px; }

.diff {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .2);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color .14s, background .14s, transform .1s;
}
.diff:hover { background: rgba(255, 207, 107, .07); border-color: var(--gold-dim); }
.diff:active { transform: scale(.985); }
.diff[aria-checked="true"] {
  border-color: var(--gold);
  background: rgba(255, 207, 107, .13);
  box-shadow: inset 0 0 0 1px rgba(255, 207, 107, .3);
}
.diff .dot {
  flex: 0 0 auto;
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid var(--gold-dim);
}
.diff[aria-checked="true"] .dot { background: var(--gold); border-color: var(--gold); }
.diff .dl { flex: 1; min-width: 0; }
.diff .dl b { display: block; font-size: 14px; font-weight: 700; }
.diff .dl em { display: block; font-style: normal; font-size: 11px; color: var(--ink-dim); margin-top: 1px; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffd97e, #e0a23b);
  color: #3a2508;
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .06em;
  cursor: pointer;
  box-shadow: 0 5px 0 #96631c, 0 10px 22px rgba(0, 0, 0, .4);
  transition: transform .08s, box-shadow .08s, filter .12s;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(4px); box-shadow: 0 1px 0 #96631c, 0 4px 12px rgba(0, 0, 0, .4); }

.btn.ghost {
  background: transparent;
  color: var(--ink-dim);
  box-shadow: none;
  border: 1px solid var(--line);
  font-weight: 600;
  padding: 10px 20px;
}
.btn.ghost:hover { color: var(--ink); border-color: var(--gold-dim); }

.btn-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------- 下部パネル ---------- */
.panel {
  min-height: 74px;
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.prompt {
  margin: 0;
  font-size: 14px;
  color: var(--ink-dim);
  text-align: center;
  line-height: 1.6;
}
.prompt b { color: var(--gold); }

.result {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  animation: rise .3s cubic-bezier(.2, .9, .3, 1) both;
}

.result .pts {
  flex: 0 0 auto;
  min-width: 92px;
  text-align: center;
}
.result .pts b {
  display: block;
  font-size: 34px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(255, 207, 107, .35);
}
.result .pts span { font-size: 10px; letter-spacing: .2em; color: var(--ink-dim); }

.result .txt { flex: 1; min-width: 0; text-align: left; }
.result .txt b { display: block; font-size: 16px; margin-bottom: 2px; }
.result .txt span { font-size: 12px; color: var(--ink-dim); font-variant-numeric: tabular-nums; }

.result.perfect .pts b { color: #fff2c9; animation: pop .5s ease both; }

/* ---------- 結果一覧 ---------- */
.tally {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.tally li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.tally li .n { color: var(--ink-dim); font-size: 11px; letter-spacing: .1em; }
.tally li .d { flex: 1; text-align: right; color: var(--ink-dim); font-variant-numeric: tabular-nums; font-size: 12px; }
.tally li .p { width: 52px; text-align: right; color: var(--gold); font-variant-numeric: tabular-nums; font-weight: 700; }

.grand {
  font-size: 52px;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 30px rgba(255, 207, 107, .35);
  margin: 2px 0;
}
.grand em { font-style: normal; font-size: 18px; color: var(--ink-dim); font-weight: 600; }
.rank { font-size: 19px; font-weight: 800; margin: 8px 0 2px; }
.rank-c { font-size: 13px; color: var(--ink-dim); margin: 0 0 14px; }
.newbest {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: #3a2508;
  background: var(--gold);
  animation: pop .5s ease both;
}

/* ---------- ランキング登録（結果画面のなか） ---------- */
.lb {
  margin: 4px 0 16px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, .22);
  border: 1px solid rgba(255, 255, 255, .06);
}
.lb-lead {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-dim);
}
.namerow { display: flex; gap: 8px; }
.namerow input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .35);
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;            /* 16px 未満だと iOS が勝手にズームする */
}
.namerow input::placeholder { color: #8a7358; }
.namerow input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(255, 207, 107, .18);
}
.btn.small { padding: 10px 18px; font-size: 14px; box-shadow: 0 4px 0 #96631c; }
.btn.small:active { box-shadow: 0 1px 0 #96631c; }

.lb-msg {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-dim);
}
.lb-msg:first-child { margin-top: 0; }
.lb-msg b { color: var(--gold); font-variant-numeric: tabular-nums; }
.lb-msg.err { color: #ff9f8f; }
.lb-msg.ok .nm {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--gold);
  color: #3a2508;
  font-size: 12px;
  font-weight: 700;
}
.linkish {
  margin-top: 6px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 12px;
  text-decoration: underline;
  cursor: pointer;
}
.linkish:hover { color: var(--gold); }

/* ---------- シェア ---------- */
.share {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0 0 16px;
}
.sh {
  padding: 11px 8px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .22);
  color: var(--ink);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: filter .12s, background .14s, border-color .14s, transform .08s;
}
.sh:hover { background: rgba(255, 207, 107, .08); border-color: var(--gold-dim); }
.sh:active { transform: scale(.98); }
.sh:disabled { opacity: .65; cursor: default; }
/* .sh:hover と同じ詳細度で、あとに書いてあるのでブランド色が勝つ */
.sh.x    { background: #000;    border-color: #000;    color: #fff; }
.sh.line { background: #06c755; border-color: #06c755; color: #fff; }
.sh.x:hover, .sh.line:hover { filter: brightness(1.25); }

/* ---------- ランキング画面 ---------- */
.tabs { display: flex; gap: 6px; margin: 0 0 12px; }
.tab {
  flex: 1;
  padding: 8px 4px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .2);
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color .14s, background .14s, color .14s;
}
.tab:hover { border-color: var(--gold-dim); }
.tab[aria-selected="true"] {
  border-color: var(--gold);
  background: rgba(255, 207, 107, .13);
  color: var(--ink);
}

.lb-list { min-height: 132px; margin-bottom: 16px; }
.lb-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.lb-rows li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.lb-rows .n {
  width: 26px;
  text-align: right;
  font-size: 12px;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
}
.lb-rows li:nth-child(-n+3) .n { color: var(--gold); font-weight: 700; }
.lb-rows .who {
  flex: 1;
  min-width: 0;
  text-align: left;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.lb-rows .p {
  width: 56px;
  text-align: right;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.lb-rows li.me {
  background: rgba(255, 207, 107, .12);
  border-radius: 8px;
}

/* ---------- ラウンド一覧（たたんである） ---------- */
.tallybox { margin: 0 0 16px; text-align: left; }
.tallybox > summary {
  cursor: pointer;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-dim);
  padding: 4px 0;
}
.tallybox > summary:hover { color: var(--gold); }
.tallybox .tally { margin-bottom: 0; }

/* ---------- フッタ ---------- */
.foot {
  text-align: center;
  font-size: 11px;
  color: #7d6449;
  letter-spacing: .08em;
}
kbd {
  font-family: inherit;
  font-size: 10px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--ink-dim);
}

@media (max-width: 420px) {
  .hud-item b { font-size: 17px; }
  .result .pts { min-width: 76px; }
  .result .pts b { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; }
}