:root {
  color-scheme: dark;
  font-family: system-ui, sans-serif;
  background: #111827;
  color: #f9fafb;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  display: flex;
  justify-content: center;
}

main {
  width: min(100%, 1040px);
  padding: clamp(0.75rem, 2.5vw, 1.5rem);
  text-align: center;
}

.game-heading {
  margin-bottom: 1rem;
}

h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.25rem, 4vw, 2rem);
}

h2 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.2rem;
}

.game-heading p,
.instructions {
  margin: 0 auto 0.75rem;
  color: #cbd5e1;
}

.instructions {
  max-width: 50rem;
  font-size: 0.9rem;
}

.game-controls {
  width: min(100%, 960px);
  margin: 0 auto 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.part-toolbar,
.mode-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

button {
  padding: 0.5rem 0.75rem;
  border: 1px solid #475569;
  border-radius: 0.375rem;
  background: #1f2937;
  color: #f9fafb;
  font: inherit;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: #334155;
}

button.is-active,
button[aria-pressed="true"] {
  border-color: #38bdf8;
  background: #075985;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

#mode-label {
  min-width: 5.5rem;
  color: #cbd5e1;
  text-align: left;
}

#reset-button {
  border-color: #b45309;
}

.layout-status {
  width: min(100%, 960px);
  min-height: 1.25rem;
  margin: 0 auto 0.4rem;
  color: #94a3b8;
  font-size: 0.875rem;
  text-align: left;
}

.inventory-status,
.game-message {
  width: min(100%, 960px);
  min-height: 1.25rem;
  margin: 0 auto 0.5rem;
  font-size: 0.875rem;
  text-align: left;
}

.inventory-status {
  color: #cbd5e1;
}

.game-message {
  color: #86efac;
  font-weight: 600;
}

canvas {
  display: block;
  width: min(100%, 960px, calc((100vh - 12rem) * 16 / 9));
  height: auto;
  margin: 0 auto;
  border-radius: 0.5rem;
  box-shadow: 0 0 0 1px #475569, 0 1rem 2.5rem #02061755;
  background: #e2e8f0;
  touch-action: manipulation;
  cursor: grab;
}

#part-toolbar[data-mode="play"] button,
#part-toolbar[data-mode="paused"] button {
  cursor: not-allowed;
}

canvas:active {
  cursor: grabbing;
}

@media (max-width: 640px) {
  main {
    padding: 0.75rem;
  }

  .game-heading {
    margin-bottom: 0.75rem;
  }

  .game-controls {
    justify-content: center;
  }

  .part-toolbar,
  .mode-controls {
    justify-content: center;
  }

  .layout-status {
    text-align: center;
  }

  .inventory-status,
  .game-message {
    text-align: center;
  }
}