* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: #000000;
  color: #ffffff;
}

.container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

.controls-panel {
  width: 320px;
  background: linear-gradient(180deg, #1a1a1a 0%, #0d0d0d 100%);
  padding: 24px;
  overflow-y: auto;
  border-right: 2px solid #333;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
}

.controls-panel h2 {
  margin: 0 0 24px 0;
  font-size: 20px;
  font-weight: 600;
  color: #7fc8ff;
  text-align: center;
  border-bottom: 2px solid #333;
  padding-bottom: 12px;
}

.control-group {
  margin-bottom: 24px;
}

.control-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 14px;
}

.label-text {
  color: #e0e0e0;
  font-weight: 500;
}

.value-display {
  background: #2a2a2a;
  padding: 4px 12px;
  border-radius: 12px;
  font-weight: 600;
  color: #7fc8ff;
  min-width: 45px;
  text-align: center;
  font-size: 13px;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #2a2a2a;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7fc8ff 0%, #5aa3d9 100%);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(127, 200, 255, 0.4);
  transition: all 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 3px 12px rgba(127, 200, 255, 0.6);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7fc8ff 0%, #5aa3d9 100%);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(127, 200, 255, 0.4);
  transition: all 0.2s ease;
}

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 3px 12px rgba(127, 200, 255, 0.6);
}

.info-box {
  background: #1a2a3a;
  border-left: 4px solid #7fc8ff;
  padding: 16px;
  border-radius: 8px;
  margin: 24px 0;
  font-size: 13px;
  line-height: 1.6;
}

.info-box p {
  margin: 8px 0;
}

.info-box strong {
  color: #7fc8ff;
}

.reset-button {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #7fc8ff 0%, #5aa3d9 100%);
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(127, 200, 255, 0.3);
}

.reset-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(127, 200, 255, 0.5);
}

.reset-button:active {
  transform: translateY(0);
}

#canvas-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #000000;
  padding: 20px;
}

canvas {
  display: block;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8);
  border-radius: 8px;
}

/* Scrollbar customization */
.controls-panel::-webkit-scrollbar {
  width: 8px;
}

.controls-panel::-webkit-scrollbar-track {
  background: #0d0d0d;
}

.controls-panel::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb:hover {
  background: #444;
}