/* CSS Variables - Dark Gray Theme with Blue Accents */
:root {
  /* Colors */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-quaternary: #333333;
  
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  
  --accent-primary: #2196f3;
  --accent-primary-hover: #1976d2;
  --accent-secondary: #03dac6;
  --accent-danger: #f44336;
  --accent-danger-hover: #d32f2f;
  --accent-success: #4caf50;
  --accent-success-hover: #45a049;
  
  --border-color: #404040;
  --border-color-focus: var(--accent-primary);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout */
.container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding: var(--space-xl);
  max-width: 100vw;
}

/* Common Components */
.section {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.section-header {
  background: var(--bg-tertiary);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  user-select: none;
  transition: background-color var(--transition-normal);
}

.section-header:hover {
  background: var(--bg-quaternary);
}

.section-header h3 {
  margin: 0;
  font-size: 16px;
}

.toggle-arrow {
  font-size: 14px;
  transition: transform var(--transition-normal);
}

.toggle-arrow.rotated {
  transform: rotate(180deg);
}

.section-content {
  padding: var(--space-xl);
  display: none;
}

.section-content.expanded {
  display: block;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons */
.btn {
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  padding: var(--space-sm) var(--space-lg);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
}

.btn-danger {
  background: var(--accent-danger);
  color: white;
  padding: var(--space-sm) var(--space-lg);
}

.btn-danger:hover {
  background: var(--accent-danger-hover);
}

.btn-success {
  background: var(--accent-success);
  color: white;
  padding: var(--space-sm) var(--space-lg);
}

.btn-success:hover {
  background: var(--accent-success-hover);
}

.btn-small {
  padding: var(--space-xs) var(--space-sm);
  font-size: 12px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: 1px solid var(--border-color);
}

.btn-icon:hover {
  background: rgba(0, 0, 0, 0.8);
  border-color: var(--accent-primary);
}

/* Form Controls */
.form-control {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-quaternary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
  background: var(--bg-tertiary);
}

.form-control option {
  background: var(--bg-quaternary);
  color: var(--text-primary);
}

/* Unified Sliders */
.slider {
  flex: 1;
  height: 6px;
  background: var(--bg-quaternary);
  outline: none;
  border-radius: 3px;
  appearance: none;
  cursor: pointer;
  border: 1px solid var(--border-color);
}

.slider.slider-small {
  height: 4px;
}

.slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--accent-primary);
  cursor: pointer;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 2px solid white;
}

.slider.slider-small::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
}

.slider::-webkit-slider-thumb:hover {
  background: var(--accent-primary-hover);
  transform: scale(1.1);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--accent-primary);
  cursor: pointer;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: var(--shadow-sm);
}

.slider.slider-small::-moz-range-thumb {
  width: 16px;
  height: 16px;
}

/* Top Bar */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  box-shadow: var(--shadow-md);
}

.playback-controls {
  display: flex;
  gap: var(--space-sm);
}

.play-btn {
  width: 40px;
  height: 40px;
  font-size: 16px;
  font-weight: bold;
}

.stop-btn {
  width: 40px;
  height: 40px;
  font-size: 16px;
  font-weight: bold;
}

/* WLED Controls */
.wled-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.wled-input {
  width: 200px;
  font-size: 12px;
  padding: var(--space-xs) var(--space-sm);
}

.wled-protocol {
  width: 110px;
  font-size: 12px;
  padding: var(--space-xs) var(--space-sm);
}

.wled-fps {
  width: 85px;
  font-size: 12px;
  padding: var(--space-xs) var(--space-sm);
}

.wled-btn {
  white-space: nowrap;
  font-size: 12px;
  padding: var(--space-xs) var(--space-sm);
}

.wled-status {
  font-size: 12px;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  min-width: 90px;
  text-align: center;
  transition: all var(--transition-normal);
}

.wled-status.connected {
  background: #1b3a1b;
  border-color: var(--accent-success);
  color: #c8e6c9;
}

.wled-status.connecting {
  background: #3a2a1b;
  border-color: #ff9800;
  color: #ffcc80;
}

.wled-status.error {
  background: #3a1b1b;
  border-color: var(--accent-danger);
  color: #ffcdd2;
}

.status {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.status.success {
  background: #1b3a1b;
  border-color: var(--accent-success);
  color: #c8e6c9;
}

.status.error {
  background: #3a1b1b;
  border-color: var(--accent-danger);
  color: #ffcdd2;
}

/* Viewport Section */
.viewport-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.canvas-container {
  background: rgb(13, 13, 13); /* Match 5% WebGL background */
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  position: relative;
  min-height: 400px;
}

.canvas-container.sticky {
  position: fixed;
  top: var(--space-xl);
  right: var(--space-xl);
  width: 420px;
  height: 325px;
  z-index: 1000;
  border: 2px solid var(--accent-primary);
  box-shadow: var(--shadow-lg);
}

#canvas {
  border-radius: var(--radius-lg);
  background: rgb(13, 13, 13); /* Match 5% WebGL background */
}

.canvas-container.sticky #canvas {
  width: 400px;
  height: 305px;
}

.reset-camera-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-size: 16px;
}

/* Controls Layout */
.controls {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.control-group,
.slider-control {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--border-color);
}

.control-group label,
.slider-control label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.slider-input-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.value-input {
  width: 70px;
  padding: var(--space-xs) var(--space-sm);
  text-align: center;
  font-size: 12px;
}

.import-btn {
  margin-bottom: var(--space-sm);
  font-size: 14px;
}

.import-points-group {
  display: none;
  flex-direction: column;
}

.import-points-group span {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

/* Mode-based visibility */
.controls.mode-import .import-points-group {
  display: flex;
}

.controls.mode-import .cube-size-control {
  display: none;
}

/* Parameters Section */
.presets-controls {
  background: var(--bg-quaternary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  border: 1px solid var(--border-color);
}

.presets-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.preset-selector {
  flex: 1;
  min-width: 120px;
  font-size: 12px;
}

.preset-btn {
  font-size: 12px;
}

.presets-info {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preset-count {
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
}

.parameters-content {
  margin-top: var(--space-lg);
}

.parameter-group {
  margin-bottom: var(--space-xl);
  background: var(--bg-quaternary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.parameter-group-header {
  background: var(--bg-tertiary);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background-color var(--transition-normal);
}

.parameter-group-header:hover {
  background: var(--bg-quaternary);
}

.parameter-group-header h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.parameter-group-arrow {
  font-size: 12px;
  transition: transform var(--transition-normal);
}

.parameter-group-arrow.collapsed {
  transform: rotate(-90deg);
}

.parameter-group-content {
  padding: var(--space-lg);
}

.parameter-control {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding: var(--space-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.parameter-label {
  min-width: 100px;
  font-size: 12px;
  font-weight: 500;
}

.parameter-inputs {
  flex: 1;
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

/* Form Control Size Variants */
.form-control.input-small {
  width: 60px;
  padding: var(--space-xs);
  font-size: 11px;
  text-align: center;
}

.form-control.input-narrow {
  width: 70px;
  font-size: 12px;
  text-align: center;
}

.form-control.color-picker {
  width: 50px;
  height: 30px;
  padding: 0;
  cursor: pointer;
}

.form-control.select-small {
  flex: 1;
  padding: var(--space-xs);
  font-size: 11px;
}

.parameter-vec2-area {
  width: 80px;
  height: 80px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  position: relative;
  cursor: crosshair;
}

.parameter-vec2-handle {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.parameter-vec2-inputs {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.parameter-rgb-inputs {
  display: flex;
  gap: var(--space-xs);
}

.parameter-flag-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  max-height: 200px;
  overflow-y: auto;
}

.parameter-flag-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  min-width: 0; /* Allow text to shrink */
}

.parameter-flag-item:hover {
  background: var(--bg-quaternary);
  border-color: var(--accent-primary);
}

.parameter-flag-checkbox {
  width: 14px;
  height: 14px;
  accent-color: var(--accent-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.parameter-flag-checkbox:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 1px;
}

.parameter-flag-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
}

.parameter-flag-item:hover .parameter-flag-label {
  color: var(--text-primary);
}

.parameter-reset {
  width: 24px;
  height: 24px;
  font-size: 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.parameter-reset:hover {
  background: var(--bg-quaternary);
  color: var(--text-primary);
}

/* Code Section */
.code-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.code-controls {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-sm);
}

#codeInput {
  width: 100%;
  min-height: 450px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #f8f8f2;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 13px;
  line-height: 1.5;
  padding: var(--space-lg);
  resize: vertical;
  tab-size: 4;
}

#codeInput:focus {
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
}

.error-display {
  background: #3a1b1b;
  border: 1px solid var(--accent-danger);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
}

.error-message {
  color: #ffcdd2;
  font-size: 14px;
  font-family: monospace;
}

/* Collapsible Sections */
.collapsible-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: var(--space-sm);
    gap: var(--space-sm);
  }
  
  .top-bar {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
  
  .controls {
    grid-template-columns: 1fr;
  }
  
  .slider-input-group {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .canvas-container.sticky {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    height: 300px;
    border: 1px solid var(--accent-primary);
  }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bg-quaternary);
}