:root {
  --sector-angle: 2deg;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

h1 {
  margin-top: 24px;
  margin-bottom: 16px;
  font-size: 1.8rem;
  text-align: center;
}

#disk-container {
  margin-top: 24px;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#disk {
  width: 250px;
  height: 250px;
  border-radius: 50%;

  background: conic-gradient(
    var(--text-color) 0deg var(--sector-angle),
    transparent var(--sector-angle) 360deg
  );

  border: 1px solid var(--border-color);
}

#controls {
  margin-top: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}

.control-row input[type="number"] {
  width: 80px;
  padding: 4px;
  font-size: 0.9rem;
}