@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg-dark: #0d0f17;
  --bg-card: rgba(22, 27, 43, 0.75);
  --bg-card-hover: rgba(30, 37, 58, 0.85);
  --border-color: rgba(255, 255, 255, 0.12);
  --accent-primary: #7c3aed;
  --accent-primary-hover: #6d28d9;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #f59e0b 100%);
  --accent-glow: rgba(124, 58, 237, 0.35);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --glass-backdrop: blur(16px);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(at 0% 0%, rgba(124, 58, 237, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.12) 0px, transparent 50%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Header Navbar */
.app-header {
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13, 15, 23, 0.85);
  backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-title-icon {
  width: 28px;
  height: 28px;
  background: var(--accent-gradient);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

.header-actions {
  display: flex;
  gap: 12px;
}

/* Main Layout Grid */
.app-main {
  flex: 1;
  display: grid;
  grid-template-columns: 340px 1fr 300px;
  gap: 20px;
  padding: 20px;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1200px) {
  .app-main {
    grid-template-columns: 300px 1fr;
  }
  .palette-panel {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .app-main {
    grid-template-columns: 1fr;
  }
  .palette-panel {
    grid-column: span 1;
  }
}

/* Glassmorphism Panel Container */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: border-color 0.2s ease;
}

.panel-heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

/* Form Controls */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.control-value {
  font-family: var(--font-mono);
  color: var(--text-main);
}

.select-input, .range-input {
  width: 100%;
  background: rgba(13, 15, 23, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 10px 12px;
  font-family: var(--font-family);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.2s ease;
}

.select-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Segmented Buttons */
.segment-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: rgba(13, 15, 23, 0.6);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.segment-btn {
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.segment-btn.active {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* Canvas Viewport */
.viewport-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 500px;
  background: rgba(10, 12, 18, 0.9);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.canvas-wrapper {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

#patternCanvas, #cameraVideo {
  max-width: 100%;
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
}

/* Calibration Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: var(--glass-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 500px;
  width: 90%;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calibration-preview-box {
  width: 100%;
  height: 180px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px dashed var(--accent-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  position: relative;
}

.card-target-box {
  background: var(--accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.85rem;
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* Palette List */
.palette-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 420px;
  overflow-y: auto;
  padding-right: 4px;
}

.palette-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.palette-item:hover, .palette-item.selected {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--accent-primary);
}

.palette-swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.palette-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.palette-count {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent-primary);
}

/* Progress bar */
.progress-bar-container {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent-gradient);
  width: 0%;
  transition: width 0.3s ease;
}