/* ===== 豆豆的数学 · 糖果色主题 ===== */
@import url('https://fonts.googleapis.com/css2?family=ZCOOL+KuaiLe&family=Baloo+2:wght@500;600;700;800&display=swap');

:root {
  /* 糖果色板 */
  --pink:    #FF6FA5;
  --pink-lt: #FFD3E4;
  --blue:    #45B7F5;
  --blue-lt: #CDEBFD;
  --mint:    #34D1BF;
  --mint-lt: #C9F4EE;
  --yellow:  #FFC93C;
  --yellow-lt:#FFEFC2;
  --purple:  #9B7BF0;
  --purple-lt:#E4DBFC;
  --orange:  #FF9645;
  --coral:   #FF7B6B;
  --green:   #5FD068;

  --ink:     #4A3B6B;       /* 主文字 紫褐 */
  --ink-soft:#7E6FA0;
  --cream:   #FFFDF7;
  --paper:   #FFF7EE;

  --shadow:  0 10px 0 rgba(74,59,107,.12);
  --shadow-sm: 0 6px 0 rgba(74,59,107,.10);
  --ring:    0 0 0 5px rgba(255,255,255,.9);

  --font-zh: 'ZCOOL KuaiLe', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num:'Baloo 2', var(--font-zh);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--font-zh);
  color: var(--ink);
  background:
    radial-gradient(circle at 6% 12%, var(--blue-lt) 0 7%, transparent 7.4%),
    radial-gradient(circle at 94% 8%, var(--pink-lt) 0 6%, transparent 6.4%),
    radial-gradient(circle at 90% 90%, var(--yellow-lt) 0 7%, transparent 7.4%),
    radial-gradient(circle at 10% 92%, var(--mint-lt) 0 6%, transparent 6.4%),
    radial-gradient(circle at 50% 40%, var(--purple-lt) 0 4%, transparent 4.3%),
    linear-gradient(160deg, #FFF7FB 0%, #F3FBFF 50%, #FFFBF0 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

#root { min-height: 100%; }

.num { font-family: var(--font-num); font-weight: 800; }

/* ---- 通用按钮 ---- */
.btn {
  font-family: var(--font-zh);
  border: none;
  cursor: pointer;
  border-radius: 22px;
  color: #fff;
  background: var(--pink);
  box-shadow: 0 7px 0 rgba(0,0,0,.14);
  transition: transform .08s ease, box-shadow .08s ease, filter .15s;
  position: relative;
}
.btn:active { transform: translateY(5px); box-shadow: 0 2px 0 rgba(0,0,0,.14); }
.btn:hover { filter: brightness(1.05); }
.btn:disabled { opacity: .5; cursor: default; }

/* 顶部返回 / 工具按钮 */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--ink);
  border: 3px solid #fff;
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 20px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.pill:active { transform: translateY(3px); box-shadow: 0 3px 0 rgba(74,59,107,.10); }

/* 卡片 */
.card {
  background: var(--cream);
  border-radius: 32px;
  border: 5px solid #fff;
  box-shadow: var(--shadow);
}

/* 浮动装饰云 */
.cloud {
  position: fixed; pointer-events: none; opacity: .9;
  filter: drop-shadow(0 8px 0 rgba(74,59,107,.05));
}

/* 动画 */
@keyframes floatY { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-14px);} }
@keyframes wiggle { 0%,100%{ transform: rotate(-4deg);} 50%{ transform: rotate(4deg);} }
@keyframes pop-in { 0%{ transform: scale(.5);} 70%{ transform: scale(1.12);} 100%{ transform: scale(1);} }
@keyframes bob { 0%,100%{ transform: translateY(0) rotate(-2deg);} 50%{ transform: translateY(-8px) rotate(2deg);} }
@keyframes shake { 0%,100%{transform:translateX(0);} 20%{transform:translateX(-9px);} 40%{transform:translateX(9px);} 60%{transform:translateX(-6px);} 80%{transform:translateX(6px);} }
@keyframes micPulse { 0%{ box-shadow: 0 0 0 0 rgba(255,111,165,.55);} 70%{ box-shadow: 0 0 0 16px rgba(255,111,165,0);} 100%{ box-shadow: 0 0 0 0 rgba(255,111,165,0);} }

.float { animation: floatY 4s ease-in-out infinite; }
.wiggle { animation: wiggle 2.5s ease-in-out infinite; }
.pop-in { animation: pop-in .4s cubic-bezier(.2,1.4,.5,1); }
.bob { animation: bob 3s ease-in-out infinite; }
.shake { animation: shake .5s ease; }
.recording { animation: micPulse 1.1s ease-out infinite; background: var(--pink) !important; color: #fff !important; border-color: var(--pink) !important; }

@media (prefers-reduced-motion: reduce) {
  .float, .wiggle, .bob { animation: none; }
}