:root {
  --body-bg: #021636;
  --shape-color: #ff49ff;
  --control-bg: rgba(0, 0, 0, 0.65);
  --control-text: #ffffff;
  --control-border: rgba(255, 255, 255, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--body-bg);
  color: var(--control-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  overflow: hidden;
}

#canvas {
  background: var(--body-bg);
  display: block;
  width: 100%;
  height: 100%;
}

#color-controls {
  position: fixed;
  top: 1rem;
  left: 1rem;
  background: var(--control-bg);
  border: 1px solid var(--control-border);
  border-radius: 0.75rem;
  padding: 0.75rem;
  z-index: 5;
  min-width: 220px;
}

#color-controls .controls-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

#color-controls h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

#color-controls .controls-toggle {
  border: 1px solid var(--control-border);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--control-text);
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
}

#color-controls.collapsed .controls-body {
  display: none;
}

#color-controls label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  gap: 0.5rem;
}

#color-controls input[type="color"] {
  width: 3rem;
  height: 2rem;
  border: none;
  background: transparent;
  padding: 0;
}

#color-controls .controls-body button {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--control-border);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--control-text);
  font-size: 0.9rem;
  cursor: pointer;
}

#color-controls .controls-body button:hover {
  background: rgba(255, 255, 255, 0.2);
}