body {
  background:
    radial-gradient(circle at top, rgba(182, 235, 255, 0.7), transparent 28%),
    linear-gradient(180deg, #93d8ff 0%, #7bc5ef 30%, #6ca8d5 100%);
}

#game {
  filter: saturate(1.08) contrast(1.04);
}

#world {
  filter: saturate(1.12) contrast(1.08) brightness(1.04);
  box-shadow: inset 0 0 70px rgba(9, 25, 39, 0.17);
}

#hud .topbar,
#hud .left-hud,
#hud .interaction,
#hud .notice,
#hud .hotbar,
#hud .toast,
#hud .queue-status,
#hud #version {
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.overlay-card,
.panel,
.shop-item,
.match-card,
.primary-button,
.secondary-button,
.icon-button,
.slot,
.binding-key,
.queue-status {
  box-shadow: 0 12px 30px rgba(4, 10, 22, 0.18);
}

.overlay-card,
.panel {
  border-radius: 14px;
}

.match-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
}

.match-card.selected {
  border-color: rgba(148, 255, 203, 0.9);
  box-shadow: inset 0 0 18px rgba(148, 255, 203, 0.15), 0 12px 30px rgba(4, 10, 22, 0.18);
}

.primary-button {
  box-shadow: 0 8px 0 rgba(40, 107, 70, 0.8);
}

.primary-button:hover {
  transform: translateY(-1px);
}

.secondary-button,
.icon-button,
.slot,
.binding-key,
.shop-item button,
.touch-action {
  background-image: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
}

#version {
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}

@media (prefers-reduced-motion: no-preference) {
  #world,
  .primary-button,
  .match-card,
  .slot,
  .icon-button,
  .secondary-button,
  .notice,
  .toast {
    transition: transform .12s ease, filter .12s ease, box-shadow .12s ease, opacity .12s ease;
  }
}