:root {
  --cols: 50;
  --rows: 50;
  --px: 10px;
  --grid-w: calc(var(--cols) * var(--px));
  --grid-h: calc(var(--rows) * var(--px));
  --bg1: #ffdfe8;
  --bg2: #ffd1e2;
  --text: #ffffff;
  --outline: #0b0b0b;
  --handle-dark: #f1cf4a;
  --handle-light: #f7df7a;
  --keyhole: #0d0d0d;
  --p1: #ff6aa6;
  --p2: #ff82b8;
  --p3: #ff99cc;
  --p4: #ffb3d9;
  --p5: #ffd7ee;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: linear-gradient(180deg, var(--bg1), var(--bg2));
  font-family: 'Press Start 2P', cursive;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3vh 2vw;
}

.page { text-align: center; user-select: none; }

h1 {
  margin: 0 0 12px 0;
  font-size: clamp(12px, 2.6vw, 16px);
  color: var(--text);
}

.wrap {
  width: var(--grid-w);
  display: inline-block;
  position: relative;
}

.heart {
  width: var(--grid-w);
  height: var(--grid-h);
  position: relative;
  image-rendering: pixelated;
  overflow: visible;
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--px));
  grid-template-rows: repeat(var(--rows), var(--px));
  width: 100%;
  height: 100%;
  gap: 0;
}

.pixel { width: var(--px); height: var(--px); }

.t { background: transparent; }
.o { background: var(--outline); }
.y1 { background: var(--handle-dark); }
.y2 { background: var(--handle-light); }
.k  { background: var(--keyhole); }
.p1 { background: var(--p1); }
.p2 { background: var(--p2); }
.p3 { background: var(--p3); }
.p4 { background: var(--p4); }
.p5 { background: var(--p5); }

.overlay {
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.dials {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: calc(var(--grid-h) * 0.33);
  display: flex;
  gap: calc(var(--px) * 0.12);
  pointer-events: auto;
  z-index: 12;
}

.dial {
  width: calc(var(--px) * 1.4);
  height: calc(var(--px) * 1.7);
  min-width: 30px;
  min-height: 28px;
  background: #ffeaf2;
  border: 2px solid #ff6aa6;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ff2f86;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

.dial:active { transform: translateY(1px); }

.handle-btn {
  position: absolute;
  left: calc(50% - (var(--grid-w) * 0.16));
  top: calc(var(--grid-h) * 0.04);
  width: calc(var(--grid-w) * 0.32);
  height: calc(var(--grid-h) * 0.08);
  z-index: 18;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.handle-visual {
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 100%;
  border-radius: 12px 12px 6px 6px;
  background: linear-gradient(180deg, var(--handle-light), var(--handle-dark));
  border: 4px solid var(--outline);
  box-shadow: 0 3px 0 rgba(0,0,0,0.12);
  transform-origin: 50% 100%;
  transition: transform 450ms cubic-bezier(.2,.8,.2,1), box-shadow 200ms ease;
  z-index: 19;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 6px;
  box-sizing: border-box;
}

.handle-visual::after {
  content: '';
  width: 14%;
  height: 14%;
  background: transparent;
  border-bottom-left-radius: 3px;
  border-bottom-right-radius: 3px;
  position: absolute;
  bottom: -4%;
  left: 43%;
}

.handle-visual.open {
  transform: translateY(-88px) rotate(-10deg) scale(1.02);
  box-shadow: 0 18px 30px rgba(0,0,0,0.18);
}

@keyframes handle-pull-wrong {
  0% { transform: translateY(0) rotate(0); }
  40% { transform: translateY(-26px) rotate(-6deg); }
  100% { transform: translateY(0) rotate(0); }
}

.handle-visual.wrong {
  animation: handle-pull-wrong 520ms cubic-bezier(.2,.8,.2,1);
}

@keyframes shake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-12px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-8px); }
  80% { transform: translateX(6px); }
  100% { transform: translateX(0); }
}

@keyframes lose {
  0% { transform: scale(1); opacity:1; }
  50% { transform: scale(1.06); opacity:1; filter:brightness(1.05); }
  100% { transform: scale(0); opacity:0; }
}

@keyframes unlock {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); filter: drop-shadow(0 0 6px rgba(255,255,255,0.9)); }
  100% { transform: scale(1); }
}

.enabled .heart { transition: transform 0.12s ease; }
.enabled.shake .heart { animation: shake 0.65s ease; }
.enabled.lose .heart { animation: lose 0.7s forwards; }
.enabled.unlock .heart { animation: unlock 0.9s ease forwards; }

@media (max-width: 540px) {
  .wrap { transform: scale(calc((100vw - 24px) / var(--grid-w))); transform-origin: top center; }
  .dials { top: calc(var(--grid-h) * 0.33); }
  .handle-visual.open { transform: translateY(calc(-88px * ((100vw - 24px) / var(--grid-w)))) rotate(-10deg); }
}

.hint {
  margin-top: 14px;
  font-size: 11px;
  color: rgba(255,255,255,0.95);
}