/* Physics Playground - open-air workshop, sky to grass */

html,
body {
  height: 100%;
}

body {
  background: linear-gradient(180deg, #64B5F6 0%, #90CAF9 45%, #C5E1A5 100%);
  overflow: hidden;
}

.game-container {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  padding: 0 10px;
}

/* Palette of spawnable things */
.shelf {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0 auto 6px;
}

.shelf-item {
  width: 52px;
  height: 52px;
  min-width: 48px;
  min-height: 48px;
  font-size: 1.6rem;
  line-height: 1;
  background: var(--color-paper);
  border: var(--border-width) solid var(--border-color);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.shelf-item:active {
  transform: scale(0.92);
}

.shelf-item.selected {
  background: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

#canvas-container {
  position: relative;
  flex: 1;
  min-height: 200px;
  margin: 0 auto;
  width: min(100%, 900px);
  border: var(--border-width) solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  background: linear-gradient(180deg, #81D4FA 0%, #B3E5FC 70%, #DCEDC8 100%);
  touch-action: none;
}

#canvas-container canvas {
  display: block;
}

/* Planet tints */
#canvas-container[data-planet="moon"] {
  background: linear-gradient(180deg, #263238 0%, #455A64 70%, #90A4AE 100%);
}

#canvas-container[data-planet="mars"] {
  background: linear-gradient(180deg, #FFAB91 0%, #FF8A65 70%, #D84315 100%);
}

#canvas-container[data-planet="jupiter"] {
  background: linear-gradient(180deg, #FFE0B2 0%, #FFCC80 70%, #A1887F 100%);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 0 max(10px, env(safe-area-inset-bottom));
}

#planet-chips {
  display: flex;
  gap: 6px;
}

.planet-chip {
  width: 48px;
  height: 48px;
  font-size: 1.4rem;
  line-height: 1;
  background: var(--color-paper);
  border: var(--border-width) solid var(--border-color);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

.planet-chip:active {
  transform: scale(0.92);
}

.planet-chip.selected {
  background: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

@media (max-height: 480px) {
  .gravity-prompt {
    margin-bottom: 4px;
    padding: 4px 10px;
  }

  .shelf {
    gap: 5px;
  }

  .shelf-item,
  .planet-chip {
    width: 42px;
    height: 42px;
    font-size: 1.25rem;
  }

  .controls {
    padding: 5px 0 max(6px, env(safe-area-inset-bottom));
  }

  #canvas-container {
    min-height: 140px;
  }
}