:root {
  --tg-bg: #0f0f14;
  --tg-text: #ffffff;
  --tg-hint: #8a8a94;
  --tg-button: #2ea6ff;
  --tg-button-text: #ffffff;
}

html, body {
  height: 100%;
  background: var(--tg-bg);
  color: var(--tg-text);
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.coin-frame {
  display: block;
  width: min(56vw, 224px);
  aspect-ratio: 1 / 1;
  border-radius: 9999px;
  overflow: hidden;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: transform 0.08s ease-out;
  will-change: transform;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  touch-action: manipulation;
}

.coin-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  user-select: none;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.coin-frame:active {
  transform: scale(0.95);
}

.tap-pulse {
  animation: squish 0.18s ease-out;
}

@keyframes squish {
  0% { transform: scale(1); }
  45% { transform: scale(0.93); }
  100% { transform: scale(1); }
}

.shake {
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.floater {
  position: absolute;
  pointer-events: none;
  font-weight: 700;
  font-size: 20px;
  color: #ffd83d;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  animation: floatUp 0.8s ease-out forwards;
}

@keyframes floatUp {
  0% { opacity: 1; transform: translate(-50%, 0) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -80px) scale(1.2); }
}

.tab-active {
  color: var(--tg-button);
  border-color: var(--tg-button);
}

#syncIndicator {
  opacity: 0;
  transition: opacity 0.2s ease;
}

#syncIndicator.syncing {
  opacity: 1;
}