/* ============================================================
   节奏天团  双关演出    样式
   主题色由 JS 通过 --accent / --accent-rgb 注入
   ============================================================ */

* { box-sizing: border-box; }

:root {
  --accent: #ffd166;
  --accent-rgb: 255,196,80;
}

html, body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #04060f;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  color: #eaf0ff;
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

canvas#game {
  display: block;
  width: 100%;
  height: 100%;
  /* 关键：禁止浏览器把触摸解释成滚动/缩放手势，
     否则 iOS Safari 多指同时按下会丢 pointerdown 事件 */
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}


/* ============ 顶部 HUD ============ */
.hud {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: grid;
  grid-template-columns: 1fr minmax(140px, 34%) 1fr;
  align-items: start;
  gap: 12px;
  padding: clamp(10px, 2.4vh, 22px) clamp(12px, 3vw, 34px);
  pointer-events: none;
  z-index: 5;
  transition: opacity .35s ease;
}
.hud.hidden { opacity: 0; }

.hud-block { min-width: 0; }
.hud-right { text-align: right; }

.hud-label {
  font-size: clamp(9px, 1.5vw, 12px);
  letter-spacing: .22em;
  font-weight: 700;
  color: rgba(180, 200, 255, .6);
}

.hud-value {
  font-size: clamp(22px, 4.6vw, 38px);
  font-weight: 800;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  text-shadow: 0 0 18px rgba(var(--accent-rgb), .55);
}

.hud-center { display: flex; flex-direction: column; align-items: center; gap: 7px; }

.hud-track {
  width: 100%;
  height: 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .10);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .08);
}
.hud-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, #6ee7ff, var(--accent));
  box-shadow: 0 0 14px rgba(var(--accent-rgb), .8);
  transition: width .12s linear;
}
.hud-sub {
  font-size: clamp(9px, 1.5vw, 12px);
  letter-spacing: .16em;
  color: rgba(190, 208, 255, .7);
  font-weight: 600;
}

/* ============ 底部按键提示 ============ */
.keyhints {
  position: absolute;
  left: 0; right: 0;
  bottom: clamp(12px, 3vh, 32px);
  display: flex;
  justify-content: center;
  gap: 14px;
  pointer-events: none;
  z-index: 5;
  transition: opacity .35s ease;
}
.keyhints.hidden { opacity: 0; }

.keyhint {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 99px;
  font-size: clamp(11px, 1.8vw, 14px);
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--kc);
  background: rgba(8, 10, 24, .55);
  border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.keyhint .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--kc);
  box-shadow: 0 0 12px var(--kc);
}

/* ============ 覆盖屏幕 ============ */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 20;
  background: radial-gradient(ellipse at 50% 45%, rgba(10, 14, 38, .55), rgba(3, 5, 14, .9));
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  transition: opacity .3s ease;
}
.screen.hidden { opacity: 0; pointer-events: none; }

.panel {
  width: min(560px, 100%);
  max-height: 92vh;
  overflow-y: auto;
  padding: clamp(22px, 4.4vw, 40px);
  text-align: center;
  border-radius: 26px;
  background: linear-gradient(165deg, rgba(38, 48, 96, .78), rgba(14, 18, 42, .88));
  border: 1px solid rgba(140, 170, 255, .22);
  box-shadow: 0 26px 70px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .10);
  animation: popIn .42s cubic-bezier(.2, 1.25, .42, 1) both;
}
.panel-wide { width: min(720px, 100%); }

@keyframes popIn {
  from { opacity: 0; transform: translateY(22px) scale(.94); }
  to   { opacity: 1; transform: none; }
}

.logo {
  font-size: clamp(32px, 7.6vw, 56px);
  font-weight: 900;
  letter-spacing: .08em;
  background: linear-gradient(180deg, #fff6d0, var(--accent) 46%, #ff9d5c);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(var(--accent-rgb), .45));
}

.logo-sub {
  margin-top: 8px;
  font-size: clamp(9px, 1.7vw, 12px);
  letter-spacing: .3em;
  font-weight: 700;
  color: rgba(170, 195, 255, .72);
}

/* ============ 选关卡片 ============ */
.level-list {
  margin-top: clamp(20px, 3.4vh, 32px);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.level-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  padding: 18px 18px 16px;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  border-radius: 18px;
  color: #eaf0ff;
  background: linear-gradient(160deg, rgba(255,255,255,.10), rgba(255,255,255,.03));
  border: 1px solid rgba(255, 255, 255, .14);
  border-left: 4px solid var(--kc);
  transition: transform .12s ease, box-shadow .18s ease, background .18s ease;
}
.level-card:hover {
  transform: translateY(-2px);
  background: linear-gradient(160deg, rgba(255,255,255,.16), rgba(255,255,255,.05));
  box-shadow: 0 10px 30px rgba(0, 0, 0, .45), 0 0 0 1px var(--kc) inset;
}
.level-card:active { transform: translateY(1px); }

.lc-no {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--kc);
}
.lc-name {
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 900;
  letter-spacing: .06em;
}
.lc-sub {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .2em;
  color: rgba(170, 190, 235, .62);
}
.lc-desc {
  margin-top: 6px;
  font-size: 12px;
  color: rgba(205, 220, 255, .82);
}
/* ============ MIDI 曲库 ============ */
.song-section { margin-top: clamp(16px, 2.8vh, 24px); text-align: left; }

.song-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 0 4px 8px;
  font-size: clamp(11px, 1.7vw, 13px);
  font-weight: 800;
  letter-spacing: .1em;
  color: rgba(200, 216, 255, .85);
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.song-count {
  font-size: 10px;
  font-weight: 600;
  color: rgba(150, 172, 215, .75);
}

.song-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(146px, 1fr));
  gap: 8px;
  max-height: min(62vh, 580px);
  overflow-y: auto;
  margin-top: 8px;
  padding-right: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(140, 170, 255, .35) transparent;
}
.song-list::-webkit-scrollbar { width: 7px; }
.song-list::-webkit-scrollbar-thumb { background: rgba(140,170,255,.32); border-radius: 99px; }
.song-list::-webkit-scrollbar-track { background: transparent; }

.song-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-height: 78px;
  padding: 11px 12px;
  font-family: inherit;
  text-align: left;
  color: #dbe6ff;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 13px;
  background: linear-gradient(160deg, rgba(255,255,255,.075), rgba(255,255,255,.028));
  transition: background .14s, border-color .14s, transform .1s;
}
.song-item:hover {
  background: linear-gradient(160deg, rgba(255,255,255,.145), rgba(255,255,255,.05));
  border-color: rgba(140,170,255,.36);
}
.song-item:active { transform: scale(.98); }

.si-name {
  width: 100%;
  font-size: clamp(11px, 1.7vw, 12.5px);
  font-weight: 700;
  line-height: 1.35;
  color: #eaf0ff;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.si-stars {
  font-size: 10px;
  letter-spacing: -0.5px;
  color: #ffd166;
  white-space: nowrap;
}
.si-stars .off { color: rgba(255,255,255,.15); }
.si-meta {
  font-size: 10px;
  color: rgba(150, 172, 215, .65);
  font-variant-numeric: tabular-nums;
}
.song-empty { padding: 18px 10px; text-align: center; font-size: 12px; color: rgba(150,172,215,.7); grid-column: 1 / -1; }

/* ============ 演奏模式开关 ============ */
.switch-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: clamp(14px, 2.4vh, 20px);
  padding: 12px 14px;
  text-align: left;
  cursor: pointer;
  border-radius: 13px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .10);
  transition: background .15s, border-color .15s;
}
.switch-row:hover { background: rgba(255,255,255,.09); }
.switch-row input { position: absolute; opacity: 0; pointer-events: none; }

.sw-track {
  flex: 0 0 auto;
  position: relative;
  width: 42px; height: 24px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .14);
  transition: background .18s;
}
.sw-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #cfe0ff;
  box-shadow: 0 2px 5px rgba(0,0,0,.4);
  transition: transform .18s, background .18s;
}
.switch-row input:checked + .sw-track { background: var(--accent); }
.switch-row input:checked + .sw-track .sw-thumb { transform: translateX(18px); background: #1a1030; }

.sw-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.sw-text b { font-size: clamp(12px, 1.9vw, 14px); font-weight: 800; color: #eaf0ff; }
.sw-text em { font-style: normal; font-size: 10px; color: rgba(150,172,215,.78); line-height: 1.4; }

/* ============ 演奏界面返回按钮 ============ */
.btn-home {
  position: absolute;
  left: clamp(12px, 3vw, 34px);
  bottom: clamp(14px, 3vh, 32px);
  z-index: 6;
  padding: 9px 18px;
  font-family: inherit;
  font-size: clamp(11px, 1.8vw, 13px);
  font-weight: 800;
  letter-spacing: .1em;
  color: #dbe6ff;
  cursor: pointer;
  border-radius: 99px;
  background: rgba(8, 10, 24, .62);
  border: 1px solid rgba(255, 255, 255, .18);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background .15s, transform .1s;
}
.btn-home:hover { background: rgba(20, 26, 52, .85); }
.btn-home:active { transform: scale(.95); }
.btn-home.hidden { display: none; }

/* 手机竖屏：加大触控区 */
@media (max-width: 640px) {
  .btn-home { padding: 11px 20px; bottom: clamp(10px, 2.5vh, 20px); }
}


/* ============ 音源状态 ============ */
.sf-line {
  margin-top: 12px;
  font-size: clamp(10px, 1.6vw, 12px);
  letter-spacing: .04em;
  color: rgba(150, 172, 215, .7);
}
.sf-line.ok { color: #4ade80; }
.sf-line.busy { color: var(--accent); }
.sf-line.err { color: #ffb3bd; }

/* ============ 说明 ============ */
.howto {
  margin: clamp(20px, 3.2vh, 30px) 0 0;
  font-size: clamp(12px, 1.9vw, 14px);
  color: rgba(214, 226, 255, .82);
  line-height: 1.7;
}
.howto p { margin: 12px 0 0; }
.howto b { color: var(--accent); }

.keys { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
kbd {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 8px;
  font-family: inherit;
  font-size: .92em;
  font-weight: 700;
  color: #cfe0ff;
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(160, 190, 255, .28);
  box-shadow: 0 2px 0 rgba(0, 0, 0, .35);
}
.tap {
  padding: 5px 14px;
  border-radius: 8px;
  background: rgba(120, 200, 255, .14);
  border: 1px solid rgba(120, 200, 255, .32);
  color: #9fdcff;
  font-weight: 700;
}
.or { color: rgba(160, 180, 220, .5); font-size: .85em; }

/* ============ 按钮 ============ */
.btn {
  margin-top: clamp(18px, 3vh, 28px);
  padding: 13px 40px;
  font-family: inherit;
  font-size: clamp(14px, 2.2vw, 17px);
  font-weight: 800;
  letter-spacing: .1em;
  color: #2a1a06;
  cursor: pointer;
  border: none;
  border-radius: 99px;
  background: linear-gradient(180deg, #ffe9a8, var(--accent) 60%, #f09030);
  box-shadow: 0 8px 0 #a85e12, 0 14px 30px rgba(var(--accent-rgb), .35);
  transition: transform .1s ease, box-shadow .1s ease, filter .18s ease;
}
.btn:hover  { filter: brightness(1.07); }
.btn:active { transform: translateY(5px); box-shadow: 0 3px 0 #a85e12, 0 6px 16px rgba(var(--accent-rgb), .3); }

.btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-ghost {
  color: #cfe0ff;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(160, 190, 255, .28);
  box-shadow: 0 6px 0 rgba(0, 0, 0, .35);
}
.btn-ghost:active { box-shadow: 0 2px 0 rgba(0, 0, 0, .35); }

.hint {
  margin-top: 16px;
  font-size: clamp(10px, 1.6vw, 12px);
  color: rgba(150, 172, 215, .6);
  letter-spacing: .08em;
}

/* ============ MIDI 导入 ============ */
.import-row {
  margin-top: clamp(16px, 2.6vh, 24px);
  display: flex;
  justify-content: center;
}

.btn-sm {
  margin-top: 0;
  padding: 11px 26px;
  font-size: clamp(12px, 1.9vw, 14px);
  font-weight: 700;
}

.level-card.imported {
  border-left-style: dashed;
}

.level-card .lc-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .16em;
  padding: 3px 7px;
  border-radius: 5px;
  color: #1a1030;
  background: var(--kc);
}
/* ============ 结算 ============ */
.rank {
  font-size: clamp(62px, 15vw, 108px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(180deg, #ffffff, #ffe6a0 40%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 34px rgba(var(--accent-rgb), .55));
  animation: rankPop .55s cubic-bezier(.16, 1.5, .4, 1) both;
}
@keyframes rankPop {
  from { transform: scale(.4) rotate(-12deg); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
.rank-label {
  margin-top: 4px;
  font-size: clamp(12px, 2.1vw, 15px);
  font-weight: 700;
  letter-spacing: .28em;
  color: rgba(200, 216, 255, .8);
}
.result-level {
  margin-top: 10px;
  font-size: clamp(10px, 1.7vw, 12px);
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--accent);
  opacity: .9;
}

.stats {
  margin-top: clamp(16px, 2.8vh, 26px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 11px 4px;
  border-radius: 13px;
  background: rgba(255, 255, 255, .055);
  border: 1px solid rgba(150, 180, 255, .12);
}
.stat span {
  font-size: clamp(8px, 1.4vw, 10px);
  letter-spacing: .12em;
  font-weight: 700;
  color: rgba(170, 190, 235, .72);
}
.stat b {
  font-size: clamp(16px, 3vw, 22px);
  font-variant-numeric: tabular-nums;
  color: #eaf1ff;
}
.c-perfect { color: #ffe27a !important; }
.c-great   { color: #7ef0c9 !important; }
.c-good    { color: #8fc4ff !important; }
.c-miss    { color: #ff6b7d !important; }
.c-score   { color: var(--accent) !important; text-shadow: 0 0 16px rgba(var(--accent-rgb), .5); }

@media (max-width: 520px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .level-list { grid-template-columns: 1fr; }
  .hud { grid-template-columns: auto 1fr auto; }
}