body {
  margin: 0;
  overflow: hidden;
  background-color: #1a1a1a;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100dvh;
  touch-action: none;
}
canvas {
  background-color: #0f171e;
}

.devtools-panel {
  position: fixed;
  top: 0;
  left: -400px;
  width: 350px;
  height: 100vh;
  background: rgba(17, 26, 34, 0.95);
  border-right: 2px solid #00ccff;
  z-index: 10000;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  font-family: monospace;
  color: #fff;
  box-shadow: 10px 0 20px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.devtools-panel.open {
  left: 0;
}

.devtools-header {
  padding: 15px;
  border-bottom: 1px solid #00ccff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #0b1520;
}

.devtools-header h2 {
  margin: 0;
  font-size: 18px;
  color: #00ff80;
}

.devtools-close {
  background: none;
  border: none;
  color: #ff4444;
  font-size: 24px;
  cursor: pointer;
  font-weight: bold;
  padding: 0 5px;
}

.devtools-body {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.devtools-body::-webkit-scrollbar {
  width: 6px;
}

.devtools-body::-webkit-scrollbar-track {
  background: transparent;
}

.devtools-body::-webkit-scrollbar-thumb {
  background: #00ccff;
  border-radius: 3px;
}

.devtools-section {
  margin-top: 5px;
}

.devtools-section-title {
  font-size: 14px;
  color: #00ccff;
  cursor: pointer;
  padding: 8px 10px;
  background: rgba(0, 204, 255, 0.1);
  border-radius: 4px;
  user-select: none;
  transition:
    background 0.2s,
    color 0.2s;
  font-weight: bold;
  display: flex;
  gap: 8px;
}

.devtools-section-title:hover {
  background: rgba(0, 204, 255, 0.2);
  color: #fff;
}

.devtools-section-content {
  padding-left: 15px;
  border-left: 2px solid #00ccff;
  margin-left: 5px;
  margin-top: 5px;
}

.devtools-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  padding: 4px 0;
  border-bottom: 1px dashed #2a3b4c;
}

.devtools-label {
  font-size: 13px;
  color: #ccc;
}

.devtools-input-num,
.devtools-input-text {
  background: #0b1520;
  border: 1px solid #4a5b6c;
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  text-align: right;
  font-family: monospace;
}

.devtools-input-num {
  width: 70px;
}

.devtools-input-text {
  width: 110px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 18px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #4a5b6c;
  transition: 0.2s;
  border-radius: 18px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 12px;
  width: 12px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #00ff80;
}

input:checked + .slider:before {
  transform: translateX(18px);
}