:root {
  --bg: #1f1b27;
  --panel: #352f44;
  --panel-border: #8f7a5f;
  --text: #f5deb3;
  --accent: #c7f464;
  --danger: #ff6b6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 10%, #3d2d60 0%, transparent 35%),
    radial-gradient(circle at 80% 80%, #2e6f65 0%, transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: "Courier New", Courier, monospace;
}

.layout {
  display: grid;
  gap: 14px;
  justify-content: center;
  padding: 16px;
}

.hud {
  border: 4px solid var(--panel-border);
  background: var(--panel);
  padding: 10px 12px;
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.hud-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 6px 0;
}

button {
  border: 2px solid var(--panel-border);
  background: #1a2533;
  color: var(--text);
  font-family: inherit;
  padding: 6px 10px;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

.help {
  margin: 8px 0 0;
  font-size: 14px;
}

#status.error {
  color: var(--danger);
}

#status.success {
  color: var(--accent);
}

#gameCanvas {
  border: 4px solid var(--panel-border);
  image-rendering: pixelated;
  background: #223322;
  max-width: calc(100vw - 32px);
  height: auto;
}