/* 残心 -ZANSHIN- — 払暁前の氷青×銀（金は使わない）。iai(暗×朱い月×金)/ハブ(紺×朱×金)と主色・モチーフを分ける。 */
:root {
  --bg0: #0b131c;
  --bg1: #12202c;
  --bg2: #1b2d3a;
  --ink: #e6eef4;
  --ink-dim: #90a6b6;
  --ice: #78c4dd;    /* 主色：払暁の氷青（金の代わり） */
  --frost: #d8ecf5;  /* 明るい霜白（見出し・数字の強調） */
  --leaf: #7fa2b4;   /* 副：くすんだ鋼 */
  --edge: #cdeefb;   /* 抜き打ちの一閃 */
  --bad: #c8544a;    /* しくじり */
  --line: rgba(160, 205, 224, 0.15);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg0);
  color: var(--ink);
  font-family: "Zen Old Mincho", "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  -webkit-tap-highlight-color: transparent;
}
body { min-height: 100dvh; display: flex; flex-direction: column; align-items: center; }

/* ---- トップバー ---- */
.topbar {
  width: 100%;
  max-width: 520px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: calc(8px + env(safe-area-inset-top)) 14px 8px;
}
.back {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 15px;
  padding: 6px 4px;
}
.back:hover { color: var(--ink); }
.top-right { display: flex; align-items: center; gap: 10px; }
.lang-toggle button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  font: inherit;
  font-size: 12px;
  padding: 3px 7px;
  border-radius: 6px;
  cursor: pointer;
}
.lang-toggle button[aria-current="true"],
.lang-toggle button.is-active { color: var(--ice); border-color: var(--ice); }
.audio-ctl { display: inline-flex; align-items: center; }

/* ---- ステージ ---- */
#stage {
  position: relative;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 9 / 16;
  max-height: 78dvh;
  margin: 4px auto 0;
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg0) 0%, var(--bg1) 55%, var(--bg2) 100%);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45), inset 0 0 90px rgba(0, 0, 0, 0.35);
  user-select: none;
  touch-action: manipulation;
}
#cv { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* ---- HUD ---- */
.hud {
  position: absolute;
  top: 12px;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
}
.hud-combo {
  display: block;
  font-size: 58px;
  line-height: 1;
  font-weight: 700;
  color: var(--frost);
  text-shadow: 0 2px 20px rgba(120, 196, 221, 0.5);
  letter-spacing: 2px;
  transform-origin: center top;
}
.hud-combo.pop { animation: combo-pop 0.34s cubic-bezier(0.2, 1.4, 0.4, 1); }
@keyframes combo-pop {
  0% { transform: scale(1.75); color: var(--edge); text-shadow: 0 0 30px rgba(191, 224, 234, 0.8); }
  100% { transform: scale(1); }
}
.hud-rank {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  letter-spacing: 6px;
  color: var(--ink-dim);
}

/* ---- 中央の指示 ---- */
.cue {
  position: absolute;
  left: 0; right: 0;
  bottom: 20%;
  text-align: center;
  font-size: 18px;
  letter-spacing: 3px;
  color: var(--ink-dim);
  pointer-events: none;
  transition: opacity 0.2s, color 0.15s;
}
.cue.now { color: var(--edge); font-size: 24px; text-shadow: 0 0 24px rgba(191, 224, 234, 0.6); }
.cue.hidden { opacity: 0; }

/* ---- 段位演出 ---- */
.grade {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 46px;
  letter-spacing: 10px;
  color: var(--ice);
  text-shadow: 0 0 30px rgba(120, 196, 221, 0.5);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}
.grade.show { opacity: 1; }
.grade.hidden { display: none; }

/* ---- トースト ---- */
.toast {
  position: absolute;
  left: 50%;
  bottom: 12%;
  transform: translateX(-50%);
  background: rgba(10, 16, 22, 0.82);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 0.25s;
}
.toast.hidden { opacity: 0; }

/* ---- オーバーレイ ---- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  background: radial-gradient(120% 90% at 50% 40%, rgba(14, 22, 32, 0.55), rgba(14, 22, 32, 0.9));
  backdrop-filter: blur(2px);
}
.overlay.hidden { display: none; }
.title {
  margin: 0;
  font-size: 64px;
  letter-spacing: 14px;
  color: var(--frost);
  text-shadow: 0 0 44px rgba(120, 196, 221, 0.55);
  padding-left: 14px;
}
.title-sub { margin: -6px 0 4px; font-size: 14px; letter-spacing: 8px; color: var(--ink-dim); }
.sub { margin: 0; font-size: 16px; color: var(--ink); letter-spacing: 1px; }
.hint {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-dim);
  max-width: 320px;
}
.btn-main {
  margin-top: 6px;
  background: transparent;
  border: 1px solid var(--ice);
  color: var(--ice);
  font: inherit;
  font-size: 19px;
  letter-spacing: 6px;
  padding: 12px 40px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn-main:hover { background: var(--ice); color: var(--bg0); }
.btn-main:active { transform: translateY(1px); }

.over-title { margin: 0; font-size: 34px; letter-spacing: 6px; color: var(--bad); }
.over-reason { margin: 0; font-size: 15px; color: var(--ink-dim); }
.over-result { margin: 6px 0 0; font-size: 22px; color: var(--ink); }
.over-best { margin: 0; font-size: 14px; color: var(--ink-dim); }
.over-rank { margin: 2px 0 0; font-size: 15px; color: var(--ice); }
.over-rank.hidden { display: none; }

.overlay-name { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.overlay-name label { font-size: 13px; color: var(--ink-dim); }
.overlay-name input {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  padding: 6px 10px;
  border-radius: 6px;
  width: 140px;
  text-align: center;
}

/* ---- ランキング ---- */
.ranking {
  width: 100%;
  max-width: 520px;
  padding: 18px 16px 4px;
}
.ranking-title { font-size: 17px; letter-spacing: 4px; color: var(--ice); margin: 0 0 10px; }
.rank-list { list-style: none; margin: 0; padding: 0; }
.rank-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 6px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.rank-list .rank-pos { width: 26px; color: var(--ink-dim); text-align: right; }
.rank-list .rank-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-list .rank-score { color: var(--ice); font-variant-numeric: tabular-nums; }
.rank-list li.me { background: rgba(120, 196, 221, 0.08); border-radius: 6px; }
.rank-empty { color: var(--ink-dim); font-size: 14px; }
.rank-empty.hidden { display: none; }

/* ---- みくじの解説 ---- */
.mikuji-about {
  width: 100%;
  max-width: 520px;
  padding: 4px 16px 8px;
  color: var(--ink-dim);
}
.mikuji-about summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--ink);
  list-style: none;
  padding: 8px 0;
}
.mikuji-about summary::-webkit-details-marker { display: none; }
.mikuji-about-ico { width: 26px; height: 26px; border-radius: 50%; }
.mikuji-about-body { font-size: 14px; line-height: 1.85; }
.mikuji-about-body h2 { font-size: 16px; color: var(--ice); margin: 14px 0 6px; }
.mikuji-about-body h3 { font-size: 15px; color: var(--ink); margin: 12px 0 4px; }
.mikuji-about-say {
  border-left: 2px solid var(--leaf);
  padding-left: 12px;
  color: var(--ink);
}

.credit {
  width: 100%;
  max-width: 520px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 12px;
  letter-spacing: 4px;
  padding: 12px 0 calc(24px + env(safe-area-inset-bottom));
}

@media (max-width: 400px) {
  .title { font-size: 52px; letter-spacing: 10px; }
  .hud-combo { font-size: 48px; }
}