/* ============ 基础 ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0b0e14;
  --bg2: #11151f;
  --panel: rgba(255,255,255,.035);
  --panel-solid: #161b26;
  --border: rgba(255,255,255,.075);
  --border-strong: rgba(255,255,255,.14);
  --text: #e9edf5;
  --text-soft: #9aa5b8;
  --text-dim: #616c80;
  --accent: #6ee7b7;
  --accent2: #60a5fa;
  --accent3: #c084fc;
  --gold: #fbbf24;
  --danger: #fb7185;
  --mono: 'Space Grotesk', ui-monospace, monospace;
  --sans: 'Noto Sans SC', -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --bubble: #7dd3fc;
  --bubble2: #38bdf8;
}

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

body {
  font-family: var(--sans);
  background:
    radial-gradient(1100px 700px at 12% -8%, rgba(96,165,250,.10), transparent 62%),
    radial-gradient(900px 620px at 92% 8%, rgba(110,231,183,.08), transparent 60%),
    radial-gradient(800px 800px at 50% 108%, rgba(192,132,252,.07), transparent 62%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* ============ 顶栏 ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: .7rem 1.15rem;
  background: rgba(11,14,20,.72);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: .55rem; }
.brand-icon { width: 21px; height: 21px; color: var(--accent); }
.brand-name { font-family: var(--mono); font-weight: 700; letter-spacing: .04em; font-size: .96rem; }
.topbar-actions { display: flex; gap: .4rem; }

.icon-btn {
  width: 36px; height: 36px; display: grid; place-items: center;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text-soft); cursor: pointer;
  transition: .2s;
}
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: rgba(255,255,255,.07); }
.icon-btn.off { opacity: .35; }
.icon-btn.off .sound-wave { display: none; }

/* ============ Hero ============ */
.hero {
  max-width: 820px; margin: 0 auto;
  padding: 4.2rem 1.4rem 2.6rem;
  text-align: center;
}
.hero-kicker {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.15rem; opacity: .9;
}
.hero-title {
  font-size: clamp(2.5rem, 9vw, 4.4rem);
  font-weight: 900; line-height: 1.06; letter-spacing: -.02em;
  margin-bottom: 1.1rem;
}
.grad {
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent2) 50%, var(--accent3) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  color: var(--text-soft); font-size: 1.02rem;
  max-width: 480px; margin: 0 auto 2rem; font-weight: 300;
}
.hero-cta { display: flex; gap: .7rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .82rem 1.6rem; border-radius: 12px;
  font-family: var(--sans); font-size: .95rem; font-weight: 700;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .16s cubic-bezier(.34,1.56,.64,1), box-shadow .2s, background .2s, border-color .2s;
}
.btn svg { width: 17px; height: 17px; }
.btn:active { transform: scale(.96); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #06121c;
  box-shadow: 0 6px 26px -8px rgba(110,231,183,.5);
}
.btn-primary:hover { box-shadow: 0 10px 34px -8px rgba(110,231,183,.65); transform: translateY(-2px); }

.btn-ghost {
  background: var(--panel); border-color: var(--border-strong); color: var(--text-soft);
}
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,.07); }

.btn-small { padding: .48rem .95rem; font-size: .82rem; border-radius: 10px;
  background: var(--panel); border-color: var(--border-strong); color: var(--text-soft); }
.btn-small:hover { color: var(--text); background: rgba(255,255,255,.08); }

/* ============ 统计 ============ */
.stats {
  max-width: 820px; margin: 0 auto 1.5rem;
  padding: 0 1.4rem;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .65rem;
}
.stat-card {
  display: flex; align-items: center; gap: .7rem;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: .8rem .9rem;
}
.stat-icon { color: var(--text-dim); flex-shrink: 0; }
.stat-icon svg { width: 19px; height: 19px; display: block; }
.stat-body { display: flex; flex-direction: column; min-width: 0; }
.stat-value {
  font-family: var(--mono); font-size: 1.32rem; font-weight: 700;
  line-height: 1.1; color: var(--text);
  font-variant-numeric: tabular-nums;
}
.stat-label { font-size: .68rem; color: var(--text-dim); white-space: nowrap; }
.stat-value.bump { animation: bump .34s cubic-bezier(.34,1.56,.64,1); }
@keyframes bump { 0%{transform:scale(1)} 45%{transform:scale(1.22); color: var(--gold)} 100%{transform:scale(1)} }

/* ============ 游戏区 ============ */
.game-wrap {
  max-width: 820px; margin: 0 auto;
  padding: 0 1.4rem 2.6rem;
}
.game-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: .8rem; margin-bottom: .8rem; flex-wrap: wrap;
}
.game-title { font-size: 1.05rem; font-weight: 700; }
.game-tools { display: flex; align-items: center; gap: .7rem; }
.hint { font-size: .76rem; color: var(--text-dim); }

.paper-stage {
  border-radius: 18px;
  padding: 1.05rem;
  background: linear-gradient(160deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05), 0 24px 60px -30px rgba(0,0,0,.9);
  overflow: hidden;
}

.paper {
  display: grid;
  gap: 6px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

/* 气泡 */
.bubble {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  cursor: pointer;
  background:
    radial-gradient(circle at 33% 28%, rgba(255,255,255,.85), rgba(255,255,255,.14) 26%, transparent 52%),
    radial-gradient(circle at 68% 74%, rgba(255,255,255,.22), transparent 58%),
    linear-gradient(155deg, var(--bubble), var(--bubble2));
  box-shadow:
    inset 0 -3px 6px rgba(0,0,0,.22),
    inset 0 3px 6px rgba(255,255,255,.30),
    0 3px 9px -3px rgba(0,0,0,.6);
  transition: transform .13s cubic-bezier(.34,1.56,.64,1);
  will-change: transform;
}
.bubble::after {
  content: '';
  position: absolute; inset: 14%;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.16);
  pointer-events: none;
}
.bubble:hover { transform: scale(1.07); }

/* 捏破动画 */
.bubble.pop {
  animation: popOut .32s cubic-bezier(.2,.8,.3,1) forwards;
  pointer-events: none;
}
@keyframes popOut {
  0%   { transform: scale(1.12); filter: brightness(1.5); }
  55%  { transform: scale(1.3); opacity: .55; filter: brightness(1.9); }
  100% { transform: scale(.72); opacity: .30; }
}
/* 捏破后的凹陷状态 */
.bubble.popped {
  background: radial-gradient(circle at 50% 45%, rgba(255,255,255,.05), rgba(0,0,0,.20) 70%);
  box-shadow: inset 0 4px 10px rgba(0,0,0,.55), inset 0 -1px 2px rgba(255,255,255,.05);
  transform: scale(.97);
  cursor: default;
}
.bubble.popped::after { border-color: rgba(255,255,255,.05); }
.bubble.popped:hover { transform: scale(.97); }

/* 涟漪 */
.ripple {
  position: absolute; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.6);
  pointer-events: none;
  animation: rippleOut .5s ease-out forwards;
  z-index: 5;
}
@keyframes rippleOut {
  0% { transform: scale(.3); opacity: .9; }
  100% { transform: scale(2.1); opacity: 0; }
}

/* ============ 调色板 ============ */
.palette {
  margin-top: 1.1rem;
  display: flex; align-items: center; gap: .9rem; flex-wrap: wrap;
}
.palette-label { font-size: .76rem; color: var(--text-dim); }
.swatches { display: flex; gap: .45rem; flex-wrap: wrap; }
.swatch {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid transparent; cursor: pointer; padding: 0;
  transition: transform .16s cubic-bezier(.34,1.56,.64,1), border-color .2s;
  box-shadow: inset 0 -2px 5px rgba(0,0,0,.28), inset 0 2px 5px rgba(255,255,255,.3);
}
.swatch:hover { transform: scale(1.16); }
.swatch.active { border-color: #fff; transform: scale(1.1); }

/* ============ 页脚 ============ */
.site-footer {
  max-width: 820px; margin: 0 auto;
  padding: 1.6rem 1.4rem 3rem;
  text-align: center; border-top: 1px solid var(--border);
  color: var(--text-dim); font-size: .8rem;
}
.footer-meta { margin-top: .3rem; font-family: var(--mono); font-size: .72rem; opacity: .75; }

/* ============ 连击浮层 ============ */
.combo-float {
  position: fixed; pointer-events: none; z-index: 100;
  font-family: var(--mono); font-weight: 700;
  font-size: 1.4rem; color: var(--gold);
  text-shadow: 0 2px 12px rgba(251,191,36,.6);
  opacity: 0; transform: translate(-50%, -50%);
}
.combo-float.show { animation: floatUp .8s ease-out forwards; }
@keyframes floatUp {
  0%   { opacity: 0; transform: translate(-50%,-50%) scale(.6); }
  25%  { opacity: 1; transform: translate(-50%,-70%) scale(1.15); }
  100% { opacity: 0; transform: translate(-50%,-150%) scale(1); }
}

/* ============ 响应式 ============ */
@media (max-width: 560px) {
  .hero { padding: 3rem 1.1rem 2rem; }
  .hero-sub { font-size: .94rem; }
  .stats { gap: .45rem; padding: 0 1.1rem; }
  .stat-card { padding: .65rem .7rem; gap: .55rem; }
  .stat-icon { display: none; }
  .stat-value { font-size: 1.14rem; }
  .stat-label { font-size: .62rem; }
  .game-wrap { padding: 0 1.1rem 2rem; }
  .paper-stage { padding: .7rem; border-radius: 14px; }
  .paper { gap: 4px; }
  .hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}