/* ============================================================
   电子蹦迪 · 暖阳陶土主题
   配色 / 字体 / 圆角严格遵循视觉设计规范
   ============================================================ */

:root {
  /* —— 规范配色 —— */
  --c-primary:   #3fb12f;   /* 主色 */
  --c-secondary: #6249c1;   /* 辅助色 */
  --c-accent:    #29d66a;   /* 强调色 / CTA */
  --c-bg:        #f9fbf8;   /* 页面背景 */
  --c-surface:   #ffffff;   /* 卡片 / 表面 */
  --c-text:      #1d2c1b;   /* 正文文字 */
  --c-muted:     #607a5c;   /* 次要文字 */
  --c-line:      #dce6db;   /* 描边 */

  /* —— 派生（仅明暗深浅，色相不换） —— */
  --c-primary-soft:  rgba(63, 177, 47, 0.10);
  --c-secondary-soft:rgba(98, 73, 193, 0.10);
  --c-accent-soft:   rgba(41, 214, 106, 0.14);
  --c-primary-deep:  #2f8f22;
  --c-shadow:        0 12px 30px -10px rgba(96, 122, 92, 0.40);
  --c-shadow-soft:   0 6px 18px -8px rgba(96, 122, 92, 0.28);

  /* —— 字体 / 圆角 —— */
  --font-title: 'Quicksand', 'PingFang SC', system-ui, sans-serif;
  --font-body:  'Noto Serif SC', 'Songti SC', Georgia, 'Times New Roman', serif;
  --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--c-text);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(1200px 700px at 8% -8%, rgba(63,177,47,0.08), transparent 60%),
    radial-gradient(1000px 640px at 108% 12%, rgba(98,73,193,0.08), transparent 60%),
    radial-gradient(900px 560px at 50% 112%, rgba(41,214,106,0.09), transparent 62%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

/* —— 自然肌理噪点 —— */
.grain {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* —— 背景霓虹光斑（慢速漂浮） —— */
.bg-scene { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.blob {
  position: absolute; border-radius: 50%;
  filter: blur(70px); opacity: .5;
  animation: floaty 14s ease-in-out infinite alternate;
}
.blob-a { width: 300px; height: 300px; left: -90px; top: -70px; background: var(--c-primary); opacity: .22; }
.blob-b { width: 260px; height: 260px; right: -80px; top: 18%;  background: var(--c-secondary); opacity: .20; animation-delay: -4s; }
.blob-c { width: 320px; height: 320px; left: 30%;  bottom: -130px; background: var(--c-accent); opacity: .16; animation-delay: -8s; }

@keyframes floaty {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.12); }
}

/* —— 顶栏 —— */
.topbar {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  max-width: 720px; margin: 0 auto;
  padding: calc(18px + env(safe-area-inset-top)) 20px 6px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-dot {
  width: 34px; height: 34px; flex: none; border-radius: 12px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  box-shadow: var(--c-shadow-soft);
  position: relative;
}
.brand-dot::after {
  content: ''; position: absolute; inset: 8px; border-radius: 6px;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,.9), rgba(255,255,255,0) 70%);
}
.brand-title { font-family: var(--font-title); font-size: 22px; font-weight: 700; letter-spacing: .5px; line-height: 1.1; }
.brand-sub { font-size: 11px; color: var(--c-muted); letter-spacing: 2.5px; margin-top: 2px; font-family: var(--font-title); }

.top-actions { display: flex; gap: 10px; }

.chip {
  font-family: var(--font-title);
  border: 1px solid var(--c-line);
  background: var(--c-surface);
  color: var(--c-text);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.chip:hover { transform: translateY(-2px); box-shadow: var(--c-shadow-soft); border-color: var(--c-accent); }
.chip:active { transform: translateY(0) scale(.96); }
.chip-icon { width: 44px; height: 44px; font-size: 19px; display: grid; place-items: center; }

/* —— 主区域 —— */
.main { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; padding: 8px 20px calc(26px + env(safe-area-inset-bottom)); }

.stage-card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: calc(var(--radius) + 8px);
  box-shadow: var(--c-shadow);
  padding: 14px;
}

/* —— 舞台 —— */
.stage {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-line);
  background:
    radial-gradient(120% 90% at 50% 108%, rgba(41,214,106,0.10), transparent 55%),
    radial-gradient(90% 70% at 12% 0%, rgba(63,177,47,0.08), transparent 55%),
    radial-gradient(90% 70% at 88% 0%, rgba(98,73,193,0.08), transparent 55%),
    #ffffff;
  touch-action: manipulation;
  aspect-ratio: 720 / 480;
}
#stage { display: block; width: 100%; height: 100%; cursor: pointer; }

.stage-hint {
  position: absolute; left: 50%; bottom: 14px; transform: translate(-50%, 0);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  box-shadow: var(--c-shadow-soft);
  font-size: 13px; color: var(--c-muted);
  white-space: nowrap;
  opacity: 0; transition: opacity .4s ease;
  pointer-events: none;
  font-family: var(--font-title);
}
.stage-hint.show { opacity: 1; }
.hint-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-accent);
  animation: hintPulse 1s ease-in-out infinite;
}
@keyframes hintPulse {
  0%, 100% { transform: scale(1); opacity: .6; }
  50%      { transform: scale(1.5); opacity: 1; }
}

/* 连击弹字 */
.combo-pop {
  position: absolute; left: 50%; top: 34%; transform: translate(-50%, -50%);
  font-family: var(--font-title);
  font-size: 34px; font-weight: 700; text-align: center;
  pointer-events: none; opacity: 0;
  text-shadow: 0 3px 0 rgba(255,255,255,.8);
}
.combo-pop.num  { color: var(--c-accent); }
.combo-pop.move { color: var(--c-primary); font-size: 22px; }
.combo-pop.pop { animation: popFly 0.9s cubic-bezier(.2,.8,.3,1) forwards; }
@keyframes popFly {
  0%   { opacity: 0; transform: translate(-50%, -30%) scale(.6); }
  20%  { opacity: 1; transform: translate(-50%, -55%) scale(1.12); }
  100% { opacity: 0; transform: translate(-50%, -130%) scale(1); }
}

/* —— 数据条 —— */
.hud {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin-top: 14px;
}
.hud-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 12px 8px;
  text-align: center;
  box-shadow: var(--c-shadow-soft);
}
.hud-label { display: block; font-size: 12px; color: var(--c-muted); font-family: var(--font-title); }
.hud-num {
  display: inline-block; margin-top: 2px;
  font-family: var(--font-title);
  font-size: 30px; font-weight: 700; line-height: 1.15;
  color: var(--c-text);
  font-variant-numeric: tabular-nums;
}
.hud-item:nth-child(2) .hud-num { color: var(--c-secondary); }
.hud-item:nth-child(3) .hud-num { color: var(--c-primary); }
.hud-num.pop { animation: numPop .3s ease; }
@keyframes numPop {
  0% { transform: scale(1); }
  40% { transform: scale(1.28); }
  100% { transform: scale(1); }
}

/* —— 舞步解锁 —— */
.moves { margin-top: 14px; }
.moves-title {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 0 4px 8px;
}
.moves-title > span { font-family: var(--font-title); font-weight: 700; font-size: 15px; }
.moves-title small { color: var(--c-muted); font-size: 11px; font-family: var(--font-title); }
.moves-list { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.move-item {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-surface);
  padding: 10px 4px;
  text-align: center;
  box-shadow: var(--c-shadow-soft);
  display: flex; flex-direction: column; gap: 4px; align-items: center;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}
.move-icon { font-size: 22px; line-height: 1; filter: grayscale(1) opacity(.5); }
.move-name { font-size: 12px; font-weight: 600; color: var(--c-muted); font-family: var(--font-title); }
.move-need { font-size: 10px; color: var(--c-muted); opacity: .8; font-family: var(--font-title); }
.move-item.unlocked {
  border-color: color-mix(in srgb, var(--c-primary) 40%, var(--c-line));
}
.move-item.unlocked .move-icon { filter: none; }
.move-item.unlocked .move-name { color: var(--c-text); }
.move-item.active {
  background: linear-gradient(160deg, var(--c-accent-soft), var(--c-primary-soft));
  border-color: var(--c-accent);
  box-shadow: 0 8px 20px -8px rgba(41, 214, 106, 0.55);
  transform: translateY(-2px);
}
.move-item.active .move-name { color: var(--c-primary-deep); }
.move-item.active .move-icon { animation: wiggle 1.1s ease-in-out infinite; }
@keyframes wiggle {
  0%, 100% { transform: rotate(-12deg) scale(1); }
  50%      { transform: rotate(12deg) scale(1.15); }
}

/* —— 页脚 —— */
.foot { text-align: center; margin-top: 22px; font-size: 13px; color: var(--c-muted); }
.foot-hi { font-family: var(--font-title); font-weight: 600; color: var(--c-primary); }

/* —— 按钮 —— */
.btn {
  font-family: var(--font-title);
  font-weight: 700; font-size: 16px;
  border: none; border-radius: var(--radius);
  padding: 13px 30px;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  color: var(--c-text);
  box-shadow: 0 10px 22px -8px rgba(41, 214, 106, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.04); }
.btn-big { font-size: 18px; padding: 15px 40px; border-radius: calc(var(--radius) + 4px); }

/* —— 开场 & 弹窗 —— */
.start-overlay, .modal {
  position: fixed; inset: 0; z-index: 50;
  display: grid; place-items: center;
  padding: 22px;
  background: rgba(249, 251, 248, 0.82);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: opacity .35s ease;
}
.start-overlay.hidden { opacity: 0; pointer-events: none; }
.start-card, .modal-card {
  width: 100%; max-width: 360px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--c-shadow);
  padding: 30px 26px;
  text-align: center;
  animation: riseIn .5s cubic-bezier(.2,.8,.3,1);
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px) scale(.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.start-emoji { font-size: 52px; display: block; animation: floaty 3s ease-in-out infinite; }
.start-card h2, .modal-card h2 { font-family: var(--font-title); font-size: 22px; margin: 12px 0 8px; }
.start-p { font-size: 14px; color: var(--c-muted); line-height: 1.8; margin-bottom: 20px; }

.modal-card { text-align: left; }
.modal-emoji { font-size: 40px; display: block; text-align: center; }
.help-list { margin: 12px 0 20px; padding-left: 2px; list-style: none; }
.help-list li {
  position: relative; padding-left: 18px; margin-bottom: 9px;
  font-size: 14px; color: var(--c-text); line-height: 1.6;
}
.help-list li::before {
  content: ''; position: absolute; left: 0; top: 9px;
  width: 9px; height: 9px; border-radius: 3px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
}
.modal-card .btn { width: 100%; }

/* —— 响应式 —— */
@media (max-width: 520px) {
  .brand-title { font-size: 19px; }
  .brand-sub { letter-spacing: 1.5px; }
  .main { padding-left: 14px; padding-right: 14px; }
  .moves-list { grid-template-columns: repeat(5, 1fr); gap: 6px; }
  .move-name { font-size: 10.5px; }
  .combo-pop { font-size: 28px; }
  .hud-num { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  .blob, .start-emoji, .hint-dot { animation: none; }
}