/* Design System & Reset */
:root {
  --bg-primary: #121214;
  --bg-panel: rgba(24, 24, 28, 0.75);
  --bg-input: rgba(18, 18, 20, 0.6);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #9a4dff;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --accent-color: #8c32ff;
  --accent-hover: #a35cff;
  --accent-glow: rgba(140, 50, 255, 0.35);
  --success-color: #30d158;
  --danger-color: #ff453a;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-lg: 16px;
  --radius-md: 8px;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* Base Canvas & Background Landscape */
#canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

#background-landscape {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

/* Green Screen / Transparent Mode */
body.transparent-mode {
  background-color: transparent !important;
}
body.transparent-mode #background-landscape {
  display: none !important;
}

body.chromakey-mode {
  background-color: #00ff00 !important;
}
body.chromakey-mode #background-landscape {
  display: none !important;
}

/* Hidden UI State for OBS */
body.hide-ui #ui-container {
  display: none !important;
}

body.hide-ui #toggle-ui-btn {
  opacity: 0; /* Hide button by default when UI is collapsed */
}

body.hide-ui #toggle-ui-btn:hover {
  opacity: 1; /* Make it visible on hover to allow restoring UI */
}

/* UI Container & Glassmorphism Panel */
#ui-container {
  position: absolute;
  top: 24px;
  left: 24px;
  width: 380px;
  max-height: calc(100vh - 48px);
  z-index: 10;
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
}

.panel-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #fff 0%, #a1a1a6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.panel-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.panel-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

/* Scrollbar Customization */
.panel-body::-webkit-scrollbar {
  width: 6px;
}
.panel-body::-webkit-scrollbar-track {
  background: transparent;
}
.panel-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}
.panel-body::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Sections */
.section {
  margin-bottom: 24px;
}
.section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* Form Controls */
.form-group {
  margin-bottom: 16px;
}
.form-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

select, input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
  outline: none;
}

select:focus, input[type="text"]:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  width: 100%;
  gap: 8px;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--text-primary);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* File Upload Drag'n'Drop */
.file-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.file-upload-area:hover, .file-upload-area.dragover {
  border-color: var(--border-focus);
  background-color: rgba(140, 50, 255, 0.05);
}

.file-upload-icon {
  font-size: 24px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.file-upload-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.file-upload-text span {
  color: var(--accent-hover);
  font-weight: 600;
}

/* Webcam Preview */
.webcam-preview-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background-color: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

#webcam-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1); /* Mirror view */
}

/* Toggle Overlay Toggle Button (for OBS) */
#toggle-ui-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 100;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: var(--transition-smooth);
}

#toggle-ui-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: scale(1.05);
}

/* Status Indicator */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--danger-color);
  box-shadow: 0 0 8px var(--danger-color);
}

.status-dot.active {
  background-color: var(--success-color);
  box-shadow: 0 0 8px var(--success-color);
}

/* Loading Overlay */
#loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

.loading-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Settings Preset Skins Grid */
.skins-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.skin-preset-item {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  cursor: pointer;
  background-size: cover;
  background-position: center;
  image-rendering: pixelated;
  transition: var(--transition-smooth);
}

.skin-preset-item:hover, .skin-preset-item.active {
  border-color: var(--border-focus);
  box-shadow: 0 0 8px var(--accent-glow);
  transform: scale(1.05);
}

@keyframes webrtc-pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(48, 209, 88, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(48, 209, 88, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(48, 209, 88, 0);
  }
}