/* ---------------- Rhythm mini-game ---------------- */

.game-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 104px 20px 40px;
  position: relative;
  z-index: 1;
}

.game-shell {
  width: min(1180px, 100%);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.game-layout {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 18px;
  width: 100%;
}

.game-main {
  flex: 1 1 auto;
  max-width: 900px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side-panel {
  flex: 0 0 236px;
  position: sticky;
  top: 92px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 12px;
}

.side-title {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ----- 排行榜 ----- */

.lb-block {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lb-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lb-refresh {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 8px;
  width: 26px;
  height: 26px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: color .2s ease, border-color .2s ease, transform 200ms var(--ease-out);
}

.lb-refresh:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.lb-refresh.spin {
  transform: rotate(180deg);
}

.lb-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  max-height: 300px;
  overflow-y: auto;
}

.lb-item {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 6px 10px;
}

.lb-item .lb-rank {
  font-weight: 900;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.lb-item.top1 .lb-rank { color: var(--gold); }
.lb-item.top2 .lb-rank { color: #c9d4e8; }
.lb-item.top3 .lb-rank { color: #e0a06a; }

.lb-item .lb-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #d8d8e4;
}

.lb-item .lb-score {
  font-weight: 800;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.lb-empty {
  color: var(--muted);
  font-size: 12.5px;
  padding: 8px 2px;
}

.lb-note {
  font-size: 11px;
  color: #7d7d94;
}

/* ----- 提交成績 ----- */

.leader-submit {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.leader-submit input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(8, 8, 15, .6);
  color: var(--text);
  font: inherit;
  font-size: 13.5px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.leader-submit input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 230, 245, .12);
}

.submit-status {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
  min-height: 16px;
}

.submit-status.ok { color: var(--gold); }
.submit-status.err { color: var(--red); }

/* ----- HUD ----- */

.hud {
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
}

.hud-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.hud-item b {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.hud-label {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--muted);
  text-transform: uppercase;
}

.hud-combo { align-items: center; }

.hud-combo b {
  font-size: 30px;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 14px rgba(139, 124, 246, .45));
  transition: transform 140ms var(--ease-out), opacity 140ms var(--ease-out);
}

.hud-combo b.bump { transform: scale(1.2); }

.hud-progress { justify-content: flex-end; }

.hud-actions {
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.hud-btn {
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .05);
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
  white-space: nowrap;
}

.hud-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(55, 230, 245, .08);
}

.progress {
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .14);
  overflow: hidden;
  margin-top: 6px;
}

.progress i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 99px;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(139, 124, 246, .7);
  transition: width 160ms linear;
}

/* ----- Stage ----- */

.stage {
  position: relative;
  height: min(max(480px, calc(100dvh - 160px)), 1280px);
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(139, 124, 246, .10), transparent 60%),
    radial-gradient(100% 70% at 50% 115%, rgba(55, 230, 245, .07), transparent 60%),
    rgba(12, 12, 22, .82);
  box-shadow: var(--shadow);
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.lanes {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  z-index: 1;
}

.lane {
  position: relative;
  border-right: 1px dashed rgba(255, 255, 255, .22);
  cursor: pointer;
  background: transparent;
  transition: background 120ms ease;
  touch-action: none;
}

.lane:last-child { border-right: none; }

.lane::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, .035), transparent 55%);
  pointer-events: none;
}

.lane:nth-child(1).flash { background: rgba(55, 230, 245, .10); }
.lane:nth-child(2).flash { background: rgba(139, 124, 246, .12); }
.lane:nth-child(3).flash { background: rgba(244, 114, 224, .10); }
.lane:nth-child(4).flash { background: rgba(255, 224, 102, .10); }
.lane:nth-child(5).flash { background: rgba(110, 200, 255, .10); }
.lane:nth-child(6).flash { background: rgba(183, 156, 255, .12); }
.lane:nth-child(7).flash { background: rgba(255, 156, 232, .10); }
.lane:nth-child(8).flash { background: rgba(255, 206, 107, .10); }

.lane .key {
  position: absolute;
  left: 50%;
  bottom: calc(12% - 48px);
  transform: translateX(-50%);
  width: 40px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .05);
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.lane:nth-child(1) .key { color: var(--cyan); border-color: rgba(55, 230, 245, .35); }
.lane:nth-child(2) .key { color: var(--violet); border-color: rgba(139, 124, 246, .4); }
.lane:nth-child(3) .key { color: var(--magenta); border-color: rgba(244, 114, 224, .35); }
.lane:nth-child(4) .key { color: var(--gold); border-color: rgba(255, 224, 102, .35); }
.lane:nth-child(5) .key { color: #6ec8ff; border-color: rgba(110, 200, 255, .4); }
.lane:nth-child(6) .key { color: #b79cff; border-color: rgba(183, 156, 255, .42); }
.lane:nth-child(7) .key { color: #ff9ce8; border-color: rgba(255, 156, 232, .38); }
.lane:nth-child(8) .key { color: #ffce6b; border-color: rgba(255, 206, 107, .4); }

.lane.press .key {
  background: rgba(255, 255, 255, .14);
  color: var(--text);
  transform: translateX(-50%) scale(.94);
}

.judge-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12%;
  height: 3px;
  z-index: 2;
  background: linear-gradient(90deg, transparent, rgba(139, 124, 246, 1) 18%, rgba(55, 230, 245, 1) 50%, rgba(244, 114, 224, 1) 82%, transparent);
  box-shadow: 0 0 22px rgba(139, 124, 246, .95), 0 0 6px rgba(55, 230, 245, .7);
  pointer-events: none;
  transition: filter 120ms ease;
}

.judge-line.hit { filter: brightness(1.7); }

.note-layer { position: absolute; inset: 0; z-index: 1; pointer-events: none; }

.note {
  position: absolute;
  width: 10.5%;
  left: 0;
  height: 34px;
  border-radius: 12px;
  will-change: transform;
  box-shadow: 0 0 16px var(--nc, rgba(139, 124, 246, .65));
  border: 1px solid rgba(255, 255, 255, .35);
  transition: opacity 150ms ease, filter 150ms ease;
}

.note.passed {
  opacity: .35;
  filter: saturate(.45) brightness(.75);
}

.note.hold {
  border-radius: 10px 10px 6px 6px;
}

.note.hold::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 34px;
  border-radius: 9px 9px 5px 5px;
  background: rgba(255, 255, 255, .30);
  border-bottom: 1px solid rgba(255, 255, 255, .45);
  box-shadow: inset 0 0 12px rgba(255, 255, 255, .25);
}

.note.hold.holding {
  filter: brightness(1.35);
  box-shadow: 0 0 30px var(--nc, rgba(139, 124, 246, .9));
  animation: holdPulse 1.2s ease-in-out infinite;
}

.note.hold.broken {
  opacity: 0;
  transition: opacity 200ms ease;
}

@keyframes holdPulse {
  0%, 100% { filter: brightness(1.2); }
  50% { filter: brightness(1.55); }
}

.note::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 5px;
  background: rgba(255, 255, 255, .16);
}

.note.n0 { --nc: rgba(55, 230, 245, .8); background: linear-gradient(180deg, #37e6f5, #1aa6bd); }
.note.n1 { --nc: rgba(139, 124, 246, .85); background: linear-gradient(180deg, #8b7cf6, #5a4bd0); }
.note.n2 { --nc: rgba(244, 114, 224, .8); background: linear-gradient(180deg, #f472e0, #c048b0); }
.note.n3 { --nc: rgba(255, 224, 102, .8); background: linear-gradient(180deg, #ffe066, #d8a82e); }
.note.n4 { --nc: rgba(110, 200, 255, .8); background: linear-gradient(180deg, #6ec8ff, #3f92cc); }
.note.n5 { --nc: rgba(183, 156, 255, .85); background: linear-gradient(180deg, #b79cff, #8168d8); }
.note.n6 { --nc: rgba(255, 156, 232, .8); background: linear-gradient(180deg, #ff9ce8, #cc62b8); }
.note.n7 { --nc: rgba(255, 206, 107, .8); background: linear-gradient(180deg, #ffce6b, #d8a02e); }

/* hit flash burst at the judge line */
.burst {
  position: absolute;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--bc, var(--cyan));
  box-shadow: 0 0 18px var(--bc, var(--cyan));
  opacity: 0;
  transition: opacity 200ms ease, transform 200ms var(--ease-out);
  pointer-events: none;
}

.burst.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(2.6);
}

.burst.perfect { --bc: var(--gold); }
.burst.good { --bc: var(--cyan); }
.burst.miss { --bc: var(--red); }

/* judgment text */
.judge-text {
  position: absolute;
  left: 50%;
  font-weight: 900;
  letter-spacing: .14em;
  font-size: 21px;
  text-shadow: 0 0 20px currentColor;
  background: rgba(8, 8, 15, .55);
  padding: 2px 14px;
  border-radius: 999px;
  opacity: 0;
  transform: translate(-50%, -50%) scale(.9);
  transition: opacity 200ms var(--ease-out), transform 240ms var(--ease-out);
  pointer-events: none;
}

.judge-text.perfect { color: var(--gold); }
.judge-text.good { color: var(--cyan); }
.judge-text.miss { color: var(--red); font-size: 18px; }

.judge-text.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* countdown */
.countdown {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%) scale(1.25);
  font-size: clamp(56px, 12vw, 92px);
  font-weight: 900;
  color: var(--text);
  text-shadow: 0 0 30px rgba(139, 124, 246, .8);
  opacity: 0;
  transition: opacity 160ms ease, transform 220ms var(--ease-out);
  z-index: 4;
  pointer-events: none;
}

.countdown.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* konami 提示 */
.konami-toast {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(.9);
  z-index: 200;
  background: rgba(14, 14, 26, .92);
  border: 1px solid rgba(55, 230, 245, .5);
  color: var(--cyan);
  font-weight: 900;
  letter-spacing: .2em;
  font-size: 15px;
  padding: 14px 26px;
  border-radius: 999px;
  box-shadow: 0 0 40px rgba(55, 230, 245, .35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 260ms var(--ease-out);
}

.konami-toast.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ----- Overlays ----- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 8, 15, .78);
  backdrop-filter: blur(14px) saturate(130%);
  opacity: 1;
  visibility: visible;
  transition: opacity 200ms ease, visibility 0s linear 0s;
}

.overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 200ms ease, visibility 0s linear 200ms;
}

.panel {
  width: min(440px, 92vw);
  background: rgba(14, 14, 26, .92);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 38px 34px;
  text-align: center;
  box-shadow: var(--shadow);
  transform: scale(1);
  transition: transform 220ms var(--ease-out);
}

.overlay.hidden .panel { transform: scale(.96); }

/* 暫停面板只蓋在軌道區內，保留上方 HUD 數據 */
.overlay.pause-overlay {
  position: absolute;
  inset: 0;
  z-index: 30;
  padding: 0;
  background: rgba(8, 8, 15, .52);
  backdrop-filter: blur(5px) saturate(110%);
}

.pause-overlay .panel {
  width: min(330px, 78%);
  padding: 22px 18px;
}

.pause-overlay h2 {
  font-size: 20px;
  margin-bottom: 2px;
}

.song-title {
  font-size: clamp(30px, 7vw, 44px);
  font-weight: 900;
  letter-spacing: .04em;
  margin: 4px 0 8px;
}

.song-meta {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .1em;
  margin-bottom: 22px;
}

.help {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 26px;
  color: #d0d0dd;
  font-size: 14.5px;
}

.kbd {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 28px;
  margin-right: 6px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .06);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 800;
}

.btn-start {
  width: 100%;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  border: none;
}

/* ----- Settings ----- */

.settings {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 26px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 18px 14px;
  text-align: left;
}

.setting-row label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .05em;
  margin-bottom: 10px;
}

.setting-val {
  color: var(--cyan);
  font-weight: 800;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.setting-row input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 99px;
  background: linear-gradient(90deg, rgba(55, 230, 245, .5), rgba(139, 124, 246, .6), rgba(244, 114, 224, .5));
  outline: none;
  cursor: pointer;
}

.setting-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--violet);
  box-shadow: 0 0 12px rgba(139, 124, 246, .8);
  transition: transform 120ms ease;
}

.setting-row input[type="range"]:active::-webkit-slider-thumb {
  transform: scale(1.15);
}

.setting-row input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--violet);
  box-shadow: 0 0 12px rgba(139, 124, 246, .8);
}

.setting-scale {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: .06em;
  margin-top: 6px;
}

.setting-hint {
  font-size: 11px;
  color: #7d7d94;
  margin-top: 6px;
}

.empty-chart-note {
  font-size: 12.5px;
  color: var(--gold);
  border: 1px dashed rgba(255, 224, 102, .45);
  background: rgba(255, 224, 102, .06);
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 18px;
  line-height: 1.6;
}

.empty-chart-note.hidden {
  display: none;
}

.overlay-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 22px;
  flex-wrap: wrap;
}

.overlay-actions .btn { cursor: pointer; font-family: inherit; border: none; }
.overlay-actions a.btn { border: 1px solid rgba(255, 255, 255, .22); text-decoration: none; }

.rank {
  font-size: clamp(54px, 14vw, 76px);
  font-weight: 900;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(139, 124, 246, .5));
  margin: 8px 0 4px;
}

.score-final {
  font-size: clamp(26px, 6vw, 34px);
  font-weight: 900;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 18px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.result-grid div {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-grid b {
  font-size: 19px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.result-grid span {
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ----- Mobile ----- */

@media (max-width: 900px) {
  .game-layout {
    flex-direction: column;
    align-items: stretch;
  }

  .side-panel {
    position: static;
    flex: none;
    width: 100%;
  }
}

@media (max-width: 600px) {
  .game-page { padding: 92px 12px 28px; }
  .hud { grid-template-columns: repeat(4, 1fr); gap: 6px; padding: 10px 12px; }
  .hud-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .hud-item b { font-size: 16px; }
  .hud-combo b { font-size: 26px; }
  .hud-label { font-size: 9px; letter-spacing: .1em; }
  .stage { height: min(max(420px, calc(100dvh - 190px)), 900px); }
  .note { height: 26px; border-radius: 9px; }
  .note.hold::before { height: 26px; }
  .lane .key { width: 34px; height: 30px; font-size: 12.5px; bottom: calc(12% - 40px); }
  .panel { padding: 30px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .hud-combo b { transition: none; }
  .hud-combo b.bump { transform: none; }
  .judge-text { transition: opacity 120ms ease; }
  .burst { transition: opacity 120ms ease; }
  .countdown { transition: opacity 120ms ease, transform 120ms var(--ease-out); }
  .overlay, .overlay.hidden, .panel { transition: opacity 150ms ease; }
}