* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

:root {
  --bg-top: #1b1030;
  --bg-bottom: #05030d;
  --accent: #7c5cff;
  --accent2: #ff6fb0;
  --gold: #ffd45c;
  --panel: #120e22;
  --panel-border: rgba(255, 255, 255, 0.1);
  --text: #f4f1ff;
  --text-dim: #b3a9d1;
  color-scheme: dark;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  font-family: "Hiragino Sans", "Segoe UI", "Yu Gothic UI", sans-serif;
  background: var(--bg-bottom);
  color: var(--text);
  touch-action: none;
  user-select: none;
}

#gameCanvas {
  position: fixed; inset: 0;
  display: block;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at 50% 0%, var(--bg-top) 0%, var(--bg-bottom) 70%);
}

#ui {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 10;
}

.hidden { display: none !important; }

/* ===== HUD ===== */
#hud { position: absolute; inset: 0; }

#scoreBox {
  position: absolute; top: max(24px, env(safe-area-inset-top)); left: 0; right: 0;
  text-align: center;
}
#score {
  font-size: clamp(48px, 12vw, 76px);
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 2px 18px rgba(124, 92, 255, 0.55);
}
#bestRow {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--gold);
  opacity: 0.9;
}
#bestRow span { color: var(--gold); }

#perfectText {
  position: absolute; top: 34%; left: 0; right: 0;
  text-align: center;
  font-size: clamp(28px, 6vw, 42px);
  font-weight: 800;
  letter-spacing: 0.05em;
  animation: perfectPop 0.6s ease-out forwards;
}
#perfectText.judge-perfect {
  color: var(--gold);
  text-shadow: 0 0 20px rgba(255, 212, 92, 0.8), 0 2px 6px rgba(0,0,0,0.6);
}
#perfectText.judge-fast {
  color: #5ce1ff;
  text-shadow: 0 0 20px rgba(92, 225, 255, 0.8), 0 2px 6px rgba(0,0,0,0.6);
}
#perfectText.judge-late {
  color: #ff5c7a;
  text-shadow: 0 0 20px rgba(255, 92, 122, 0.8), 0 2px 6px rgba(0,0,0,0.6);
}
@keyframes perfectPop {
  0% { transform: scale(0.4) translateY(10px); opacity: 0; }
  25% { transform: scale(1.15) translateY(0); opacity: 1; }
  70% { transform: scale(1) translateY(0); opacity: 1; }
  100% { transform: scale(1) translateY(-18px); opacity: 0; }
}

/* ===== 画面共通(スタート/ゲームオーバー) ===== */
.screen {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  pointer-events: auto;
  background: linear-gradient(180deg, rgba(5,3,13,0.55), rgba(5,3,13,0.85) 60%, rgba(5,3,13,0.95));
}

.title {
  font-size: clamp(40px, 11vw, 64px);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 4px 24px rgba(124, 92, 255, 0.6);
}
.title span {
  display: block;
  font-size: 0.5em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: 0.3em;
}
.subtitle { color: var(--text-dim); font-size: 14px; max-width: 320px; margin-bottom: 6px; }

.bestPanel {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 10px 28px;
  margin-bottom: 8px;
}
.bestLabel { font-size: 12px; color: var(--text-dim); letter-spacing: 0.1em; }
.bestValue { font-size: 28px; font-weight: 800; color: var(--gold); }

.resultScore {
  font-size: clamp(56px, 16vw, 96px);
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 4px 24px rgba(124, 92, 255, 0.6);
}
.resultSub { color: var(--text-dim); font-size: 14px; margin-bottom: 4px; }
.resultSub span { color: var(--gold); font-weight: 700; }
.newBest {
  color: var(--gold);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.05em;
  animation: newBestGlow 1.1s ease-in-out infinite;
}
@keyframes newBestGlow {
  0%, 100% { text-shadow: 0 0 10px rgba(255,212,92,0.6); }
  50% { text-shadow: 0 0 26px rgba(255,212,92,1); }
}

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

.versionRow {
  display: flex; align-items: center; gap: 10px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-dim);
}
.linkBtn {
  appearance: none; border: none; background: none;
  color: var(--text-dim);
  font-size: 12px;
  text-decoration: underline;
  cursor: pointer;
  font-family: inherit;
}
.linkBtn:hover { color: var(--text); }

.btn {
  appearance: none; border: none; cursor: pointer;
  font-family: inherit; font-weight: 700; font-size: 16px;
  border-radius: 14px;
  padding: 14px 30px;
  color: #fff;
  transition: transform 0.12s ease, filter 0.12s ease;
}
.btn:active { transform: scale(0.95); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 6px 20px rgba(124, 92, 255, 0.45);
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-sub {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--panel-border);
  font-size: 14px;
  padding: 10px 18px;
}
.btn-sub:hover { background: rgba(255,255,255,0.14); }
.btn-small { padding: 10px 20px; font-size: 14px; }

/* ===== ランキング送信 ===== */
#submitRankBox {
  display: flex; flex-direction: column; gap: 8px; align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 14px 18px;
  width: min(320px, 100%);
}
#nameInput {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  background: rgba(0,0,0,0.35);
  color: var(--text);
  font-size: 14px;
  text-align: center;
}
#nameInput:focus { outline: 2px solid var(--accent); }
#submitStatus { font-size: 12px; color: var(--text-dim); min-height: 16px; }

/* ===== 実績トースト(ゲームオーバー画面内) ===== */
#achToastArea { display: flex; flex-direction: column; gap: 6px; width: min(320px, 100%); }
.achToastItem {
  display: flex; align-items: center; gap: 8px;
  background: linear-gradient(90deg, rgba(255,212,92,0.18), rgba(255,212,92,0.05));
  border: 1px solid rgba(255,212,92,0.4);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
  text-align: left;
}
.achToastItem .icon { font-size: 20px; }
.achToastItem .name { font-weight: 700; color: var(--gold); }
.achToastItem .desc { color: var(--text-dim); font-size: 11px; }

/* ===== 常設トースト(プレイ中の実績解除) ===== */
#toastStack {
  position: absolute; top: max(100px, calc(env(safe-area-inset-top) + 100px)); left: 0; right: 0;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  pointer-events: none;
}
.toastPop {
  display: flex; align-items: center; gap: 8px;
  background: rgba(18,14,34,0.95);
  border: 1px solid rgba(255,212,92,0.5);
  border-radius: 12px;
  padding: 8px 16px;
  font-size: 13px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  animation: toastInOut 3s ease forwards;
}
.toastPop b { color: var(--gold); }
@keyframes toastInOut {
  0% { opacity: 0; transform: translateY(-10px); }
  10% { opacity: 1; transform: translateY(0); }
  85% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-6px); }
}

/* ===== パネル(実績/ランキング) ===== */
.panel {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  background: var(--panel);
  pointer-events: auto;
  z-index: 20;
}
.panelHeader {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--panel-border);
  padding-top: max(18px, env(safe-area-inset-top));
}
.panelHeader h2 { font-size: 18px; font-weight: 800; }
#achProgress { font-size: 13px; color: var(--text-dim); font-weight: 500; margin-left: 6px; }
.closeBtn {
  appearance: none; border: none; background: rgba(255,255,255,0.08);
  color: var(--text); width: 34px; height: 34px; border-radius: 50%;
  font-size: 16px; cursor: pointer;
}
.panelBody { flex: 1; overflow-y: auto; padding: 14px 16px 40px; -webkit-overflow-scrolling: touch; }

/* 実績リスト */
.achCategory {
  font-size: 12px; letter-spacing: 0.08em; color: var(--accent2);
  margin: 18px 4px 8px; font-weight: 800;
}
.achCategory:first-child { margin-top: 4px; }
.achItem {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.achItem.locked { opacity: 0.55; }
.achItem .icon {
  font-size: 24px; width: 38px; height: 38px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06); border-radius: 10px;
}
.achItem.unlocked .icon { background: rgba(255,212,92,0.18); }
.achItem .body { flex: 1; min-width: 0; }
.achItem .name { font-weight: 700; font-size: 14px; }
.achItem .desc { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.achItem .prog {
  font-size: 11px; color: var(--text-dim); margin-top: 4px;
}
.achBarTrack { height: 5px; border-radius: 3px; background: rgba(255,255,255,0.08); margin-top: 4px; overflow: hidden; }
.achBarFill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--gold)); }

/* 更新履歴 */
.changelog-entry {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 10px;
}
.changelog-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.changelog-ver { font-weight: 800; color: var(--accent2); font-size: 15px; }
.changelog-date { font-size: 12px; color: var(--text-dim); }
.changelog-entry ul { padding-left: 18px; }
.changelog-entry li { font-size: 13px; line-height: 1.6; margin-bottom: 2px; }

/* ランキングリスト */
.rankLoading, .rankEmpty { text-align: center; color: var(--text-dim); padding: 40px 0; font-size: 14px; }
.rankRow {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--panel-border);
}
.rankRow .rank { width: 34px; font-weight: 800; color: var(--text-dim); text-align: center; }
.rankRow.top1 .rank { color: #ffd45c; }
.rankRow.top2 .rank { color: #cdd6e0; }
.rankRow.top3 .rank { color: #e0a86f; }
.rankRow .rname { flex: 1; font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rankRow .rscore { font-weight: 800; color: var(--gold); }
.rankMine { background: rgba(124,92,255,0.18); border-radius: 10px; }

/* ===== レスポンシブ ===== */
@media (max-width: 480px) {
  .btn { padding: 12px 22px; font-size: 15px; }
}