:root {
  --bg-color: #0A0A0A;
  --panel-bg: rgba(15, 15, 20, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --primary: #6C5CE7;
  --primary-hover: #8174ed;
  --secondary: #00CEC9;
  --text-main: #FFFFFF;
  --text-muted: #A0A0A0;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* Canvas Background */
#glcanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
}

/* Floating Controls Panel */
.controls-panel {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 320px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  z-index: 10;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Scrollbar */
.controls-panel::-webkit-scrollbar {
  width: 6px;
}
.controls-panel::-webkit-scrollbar-track {
  background: transparent;
}
.controls-panel::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.panel-header h1 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 12px;
  background: rgba(108, 92, 231, 0.15);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid rgba(108, 92, 231, 0.3);
}

.separator {
  height: 1px;
  background: var(--border-color);
  margin: 8px 0;
}

h4 {
  font-size: 0.8rem;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: -8px;
}

/* Form Controls */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.halfs {
  flex-direction: row;
  gap: 12px;
}
.half {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

input[type="number"] {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
input[type="number"]:focus {
  border-color: var(--primary);
}

/* Custom Select */
.select-wrapper {
  position: relative;
}
.select-wrapper::after {
  content: '▼';
  font-size: 0.6rem;
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
select {
  appearance: none;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 32px 8px 12px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  width: 100%;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}
select:focus { border-color: var(--primary); }

/* Range Sliders */
.slider-val {
  display: flex;
  align-items: center;
  gap: 12px;
}
.slider-val span {
  font-size: 0.8rem;
  min-width: 32px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}
input[type="range"] {
  -webkit-appearance: none;
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: transform 0.1s;
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Custom Toggles */
.toggles {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toggle {
  display: flex;
  align-items: center;
  cursor: pointer;
}
.toggle input { display: none; }
.toggle-slider {
  position: relative;
  width: 36px;
  height: 20px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  transition: .3s;
  margin-right: 12px;
}
.toggle-slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-muted);
  border-radius: 50%;
  transition: .3s;
}
.toggle input:checked + .toggle-slider {
  background-color: var(--primary);
}
.toggle input:checked + .toggle-slider:before {
  transform: translateX(16px);
  background-color: #fff;
}
.toggle-label {
  font-size: 0.85rem;
  color: var(--text-main);
}

/* Color Pickers */
.color-pickers {
  display: flex;
  gap: 12px;
}
input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 100%;
  height: 36px;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch {
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

/* Buttons */
.export-group {
  align-items: stretch;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  flex: 1;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}
.btn-primary:active {
  transform: translateY(0);
}