#controls {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.6);
  padding: 8px 10px;
  border-radius: 8px;
  z-index: 10;
  font-size: 11px; /* smaller font */
  width: 180px;     /* smaller box */
  box-shadow: 0 0 6px rgba(0, 255, 255, 0.2);
  color: white;
  line-height: 1.2;
}

#controls h2 {
  margin: 0 0 6px;
  font-size: 12px;
  text-align: center;
  color: #00ffff;
}

.slider-grid label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  font-size: 10px;
}

.slider-grid input[type="range"] {
  flex: 1;
  margin-left: 6px;
  height: 3px;
  accent-color: #00ffff;
}

.button-group {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  gap: 5px;
  flex-wrap: wrap;
}

.button-group button {
  flex: 1 1 30%;
  padding: 4px;
  font-size: 10px;
  background-color: #00aaff;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  color: white;
  transition: background 0.2s ease;
  text-align: center;
}

.button-group button:hover {
  background-color: #0077cc;
}

.light-mode #controls {
  background: rgba(255, 255, 255, 0.9);
  color: black;
}

.light-mode .button-group button {
  background-color: #4444ff;
  color: white;
}

.light-mode .button-group button:hover {
  background-color: #2222aa;
}