* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  touch-action: manipulation;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: system-ui, sans-serif;
  background: #7ec8f0;
}

#app, .screen {
  width: 100%;
  height: 100%;
  position: relative;
}

.screen {
  display: none;
  overflow: hidden;
}

.screen.active {
  display: block;
}

.sky {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #8ed6ff 0%, #ffe9a8 55%, #b6e388 100%);
}

.logo {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 6vh 0 3vh;
}

.logo-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  animation: bob 1.6s ease-in-out infinite;
}

.d1 { background: #ff6b6b; animation-delay: 0s; }
.d2 { background: #ffd93d; animation-delay: 0.15s; }
.d3 { background: #6bcb77; animation-delay: 0.3s; }

.home-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4vw;
  padding: 0 5vw 6vh;
  height: calc(100% - 14vh);
}

.home-card {
  border: none;
  border-radius: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 0 rgba(0, 0, 0, 0.12);
  transition: transform 0.12s ease;
  position: relative;
  overflow: hidden;
}

.home-card:active {
  transform: translateY(6px) scale(0.97);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.12);
}

.home-card.animals { background: #ff8fab; }
.home-card.bubbles { background: #74c0fc; }
.home-card.colors { background: #ffe066; }
.home-card.music { background: #b197fc; }

.card-art {
  width: 46%;
  height: 46%;
  display: block;
}

.animal-art {
  background:
    radial-gradient(circle at 30% 35%, #fff 8%, transparent 9%),
    radial-gradient(circle at 70% 35%, #fff 8%, transparent 9%),
    radial-gradient(circle at 32% 36%, #3d2b1f 4%, transparent 5%),
    radial-gradient(circle at 68% 36%, #3d2b1f 4%, transparent 5%),
    radial-gradient(ellipse at 50% 62%, #fff 18%, transparent 19%),
    radial-gradient(circle at 50% 50%, #ffd6a5 52%, transparent 53%);
  border-radius: 50%;
  position: relative;
}

.animal-art::before,
.animal-art::after {
  content: "";
  position: absolute;
  width: 28%;
  height: 28%;
  background: #ffd6a5;
  border-radius: 50% 50% 40% 40%;
  top: -6%;
}

.animal-art::before { left: 8%; }
.animal-art::after { right: 8%; }

.bubble-art {
  background: radial-gradient(circle at 35% 30%, #fff 12%, rgba(255,255,255,0.35) 28%, #4dabf7 70%, #1c7ed6 100%);
  border-radius: 50%;
}

.color-art {
  background:
    conic-gradient(#ff6b6b, #ffd93d, #6bcb77, #4d96ff, #b197fc, #ff6b6b);
  border-radius: 50%;
}

.music-art {
  background: linear-gradient(#fff 0 0) 50% 70% / 18% 38% no-repeat,
              radial-gradient(circle at 38% 78%, #fff 16%, transparent 17%),
              radial-gradient(circle at 62% 62%, #fff 16%, transparent 17%);
  border-radius: 18px;
}

.back-btn {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  z-index: 20;
  width: 64px;
  height: 64px;
  border: none;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 6px 0 rgba(0, 0, 0, 0.12);
  cursor: pointer;
}

.back-btn::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 22px;
  width: 18px;
  height: 18px;
  border-left: 6px solid #ff6b6b;
  border-bottom: 6px solid #ff6b6b;
  transform: rotate(45deg);
}

.back-btn:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.12);
}

#animals {
  background: linear-gradient(180deg, #9be7ff 0%, #fff3b0 58%, #8fde5d 100%);
}

.meadow {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 28%;
  background: radial-gradient(ellipse at 20% 0%, #a8e063 40%, transparent 41%),
              radial-gradient(ellipse at 55% 10%, #7bc043 35%, transparent 36%),
              radial-gradient(ellipse at 85% 0%, #a8e063 40%, transparent 41%),
              #6bbf4e;
  border-radius: 50% 50% 0 0 / 30% 30% 0 0;
}

.stage {
  position: absolute;
  inset: 0;
}

.big-count {
  position: absolute;
  top: 8%;
  left: 0;
  right: 0;
  text-align: center;
  font-size: min(18vw, 96px);
  font-weight: 800;
  color: #fff;
  text-shadow: 0 6px 0 rgba(0, 0, 0, 0.12);
  pointer-events: none;
  opacity: 0;
  transform: scale(0.4);
}

.big-count.show {
  animation: popNum 0.7s ease forwards;
}

.creature {
  position: absolute;
  width: min(42vw, 240px);
  height: min(42vw, 240px);
  border: none;
  background: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%) scale(0);
  animation: popIn 0.45s cubic-bezier(0.2, 1.4, 0.4, 1) forwards;
}

.creature.happy {
  animation: wiggle 0.55s ease;
}

.creature svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 10px 0 rgba(0, 0, 0, 0.12));
  pointer-events: none;
}

#bubbles {
  background: linear-gradient(180deg, #4dabf7 0%, #74c0fc 40%, #a5d8ff 100%);
}

.bubble {
  position: absolute;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: radial-gradient(circle at 32% 28%, #fff 10%, rgba(255,255,255,0.45) 24%, var(--c) 72%, rgba(255,255,255,0.2) 100%);
  box-shadow: inset -8px -10px 16px rgba(0, 0, 0, 0.08);
  animation: floatUp var(--dur) linear forwards;
}

.bubble.popped {
  animation: burst 0.28s ease forwards;
}

#colors {
  background: #fff6e5;
}

.color-fill {
  position: absolute;
  inset: 0;
  transition: background 0.45s ease;
}

.color-row {
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: max(18px, env(safe-area-inset-bottom));
  display: flex;
  gap: 2.5%;
  height: 18%;
  z-index: 5;
}

.swatch {
  flex: 1;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.12);
}

.swatch:active {
  transform: translateY(5px) scale(0.94);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.12);
}

.swatch.picked {
  outline: 8px solid #fff;
  outline-offset: 2px;
  transform: scale(1.08);
}

.stamp {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
  animation: stampIn 0.35s cubic-bezier(0.2, 1.4, 0.3, 1) forwards;
}

#music {
  background: #2b2140;
}

.music-pads {
  position: absolute;
  inset: 90px 4% 4%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr 1fr;
  gap: 3%;
}

.pad {
  border: none;
  border-radius: 24px;
  cursor: pointer;
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.25);
  transition: filter 0.1s ease;
}

.pad:active, .pad.hit {
  filter: brightness(1.25);
  transform: translateY(5px);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.25);
}

.spark {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 30;
  animation: spark 0.7s ease forwards;
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes popIn {
  to { transform: translate(-50%, -50%) scale(1); }
}

@keyframes wiggle {
  0% { transform: translate(-50%, -50%) rotate(0) scale(1); }
  25% { transform: translate(-50%, -50%) rotate(-14deg) scale(1.18); }
  50% { transform: translate(-50%, -50%) rotate(12deg) scale(1.12); }
  75% { transform: translate(-50%, -50%) rotate(-8deg) scale(1.2); }
  100% { transform: translate(-50%, -50%) rotate(0) scale(1); }
}

@keyframes popNum {
  0% { opacity: 0; transform: scale(0.4); }
  40% { opacity: 1; transform: scale(1.15); }
  100% { opacity: 0; transform: scale(1.4); }
}

@keyframes floatUp {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(-120vh) scale(1.05); }
}

@keyframes burst {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.7); opacity: 0; }
}

@keyframes stampIn {
  to { transform: translate(-50%, -50%) scale(1); }
}

@keyframes spark {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--x), var(--y)) scale(0); opacity: 0; }
}

@media (min-width: 700px) and (orientation: landscape) {
  .home-grid {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    height: calc(100% - 16vh);
    padding: 0 4vw 8vh;
  }
  .music-pads {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
  }
}