Stirling-PDF/frontend/src/styles/theme.css

/* CSS variables for Tailwind + Mantine integration */

:root {
  /* Standard gray scale */
  --gray-50: 249 250 251;
  --gray-100: 243 244 246;
  --gray-200: 229 231 235;
  --gray-300: 209 213 219;
  --gray-400: 156 163 175;
  --gray-500: 107 114 128;
  --gray-600: 75 85 99;
  --gray-700: 55 65 81;
  --gray-800: 31 41 55;
  --gray-900: 17 24 39;

  /* Semantic colors for Tailwind */
  --surface: 255 255 255;
  --background: 249 250 251;
  --border: 229 231 235;

  /* Colors for Mantine integration */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Spacing system */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  /* Radius system */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadow system */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Font weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Light theme semantic colors */
  --bg-surface: #ffffff;
  --bg-raised: #f9fafb;
  --bg-muted: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --border-subtle: #e5e7eb;
  --border-default: #d1d5db;
  --border-strong: #9ca3af;
  --hover-bg: #f9fafb;
  --active-bg: #f3f4f6;
}

[data-mantine-color-scheme="dark"] {
  /* Dark theme gray scale (inverted) */
  --gray-50: 17 24 39;
  --gray-100: 31 41 55;
  --gray-200: 55 65 81;
  --gray-300: 75 85 99;
  --gray-400: 107 114 128;
  --gray-500: 156 163 175;
  --gray-600: 209 213 219;
  --gray-700: 229 231 235;
  --gray-800: 243 244 246;
  --gray-900: 249 250 251;

  /* Dark semantic colors for Tailwind */
  --surface: 31 41 55;
  --background: 17 24 39;
  --border: 75 85 99;

  /* Dark theme Mantine colors */
  --color-gray-50: #111827;
  --color-gray-100: #1f2937;
  --color-gray-200: #374151;
  --color-gray-300: #4b5563;
  --color-gray-400: #6b7280;
  --color-gray-500: #9ca3af;
  --color-gray-600: #d1d5db;
  --color-gray-700: #e5e7eb;
  --color-gray-800: #f3f4f6;
  --color-gray-900: #f9fafb;

  /* Dark theme semantic colors */
  --bg-surface: #1f2937;
  --bg-raised: #374151;
  --bg-muted: #374151;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --border-subtle: #374151;
  --border-default: #4b5563;
  --border-strong: #6b7280;
  --hover-bg: #374151;
  --active-bg: #4b5563;

  /* Adjust shadows for dark mode */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
}

/* Smooth transitions for theme switching */
* {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}