* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  overflow: hidden;
  background: black;
  font-family: 'Courier New', monospace;
}
canvas {
  background: black;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}

.controls {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 10;
  background: rgba(0, 0, 0, 0.8);
  padding: 20px;
  border-radius: 10px;
  border: 2px solid #0aff0a;
  box-shadow: 0 0 20px rgba(10, 255, 10, 0.3);
}

.control-group {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.control-group:last-child {
  margin-bottom: 0;
}

label {
  color: #0aff0a;
  font-weight: bold;
  min-width: 100px;
  text-shadow: 0 0 5px rgba(10, 255, 10, 0.5);
}

#colorPicker {
  width: 50px;
  height: 30px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  background: transparent;
}

#speedSlider {
  flex: 1;
  height: 5px;
  background: #333;
  border-radius: 5px;
  outline: none;
  cursor: pointer;
}

#speedSlider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: #0aff0a;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

#speedSlider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: #0aff0a;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

#speedValue {
  color: #0aff0a;
  font-weight: bold;
  min-width: 30px;
  text-align: center;
  text-shadow: 0 0 5px rgba(10, 255, 10, 0.5);
}

.hide-text {
  color: #0aff0a;
  font-size: 12px;
  font-style: italic;
  text-shadow: 0 0 5px rgba(10, 255, 10, 0.5);
  text-align: center;
  width: 100%;
}

.controls.hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#decaySlider {
  flex: 1;
  height: 5px;
  background: #333;
  border-radius: 5px;
  outline: none;
  cursor: pointer;
}

#decaySlider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: #0aff0a;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

#decaySlider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: #0aff0a;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

#decayValue {
  color: #0aff0a;
  font-weight: bold;
  min-width: 40px;
  text-align: center;
  text-shadow: 0 0 5px rgba(10, 255, 10, 0.5);
}

#charactersInput {
  flex: 1;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid #0aff0a;
  border-radius: 5px;
  color: #0aff0a;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 8px;
  resize: vertical;
  min-height: 40px;
  outline: none;
  box-shadow: 0 0 5px rgba(10, 255, 10, 0.3);
}

#charactersInput:focus {
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

#charactersInput::placeholder {
  color: rgba(10, 255, 10, 0.5);
}

button {
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid #0aff0a;
  border-radius: 5px;
  color: #0aff0a;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 8px 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 5px rgba(10, 255, 10, 0.3);
}

button:hover {
  background: rgba(10, 255, 10, 0.1);
  box-shadow: 0 0 10px rgba(10, 255, 10, 0.5);
}

button:active {
  transform: scale(0.95);
}

#saveToUrl {
  margin-right: 10px;
}