units-ui/app/globals.css

@import "tailwindcss";

@source "../components/**/*.{js,ts,jsx,tsx}";
@source "*.{js,ts,jsx,tsx}";

@custom-variant dark (&:is(.dark *));

:root {
  --radius: 0.5rem;

  /* Light Mode Colors - Using OKLCH for better color precision */
  --background: oklch(100% 0 0);
  --foreground: oklch(9.8% 0.038 285.8);
  --card: oklch(100% 0 0);
  --card-foreground: oklch(9.8% 0.038 285.8);
  --popover: oklch(100% 0 0);
  --popover-foreground: oklch(9.8% 0.038 285.8);
  --primary: oklch(22.4% 0.053 285.8);
  --primary-foreground: oklch(98% 0.016 240);
  --secondary: oklch(96.1% 0.016 240);
  --secondary-foreground: oklch(22.4% 0.053 285.8);
  --muted: oklch(96.1% 0.016 240);
  --muted-foreground: oklch(46.9% 0.025 244.1);
  --accent: oklch(96.1% 0.016 240);
  --accent-foreground: oklch(22.4% 0.053 285.8);
  --destructive: oklch(60.2% 0.168 29.2);
  --destructive-foreground: oklch(98% 0.016 240);
  --border: oklch(91.4% 0.026 243.1);
  --input: oklch(91.4% 0.026 243.1);
  --ring: oklch(9.8% 0.038 285.8);
}

@theme inline {
  /* Tailwind v4 theme color definitions */
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);

  /* Category colors for 23 unit types */
  --color-category-angle: oklch(69.2% 0.154 237.7);
  --color-category-apparent-power: oklch(64.8% 0.190 293.6);
  --color-category-area: oklch(75.8% 0.159 70.5);
  --color-category-current: oklch(75.8% 0.159 70.5);
  --color-category-digital: oklch(72.3% 0.134 216.8);
  --color-category-each: oklch(52.5% 0.033 257.5);
  --color-category-energy: oklch(80.3% 0.162 97.3);
  --color-category-frequency: oklch(66.8% 0.238 301.6);
  --color-category-illuminance: oklch(78.3% 0.184 128.6);
  --color-category-length: oklch(62.1% 0.214 255.5);
  --color-category-mass: oklch(72.4% 0.159 165.1);
  --color-category-pace: oklch(71.5% 0.145 192.2);
  --color-category-parts-per: oklch(69.4% 0.224 350.3);
  --color-category-power: oklch(62.8% 0.230 16.6);
  --color-category-pressure: oklch(61.3% 0.218 281.3);
  --color-category-reactive-energy: oklch(67.5% 0.276 320.6);
  --color-category-reactive-power: oklch(74.5% 0.233 316.8);
  --color-category-speed: oklch(72.4% 0.159 165.1);
  --color-category-temperature: oklch(62.8% 0.257 29.2);
  --color-category-time: oklch(58.5% 0.238 293.1);
  --color-category-voltage: oklch(75.5% 0.159 55.3);
  --color-category-volume: oklch(64.8% 0.190 293.6);
  --color-category-volume-flow-rate: oklch(77.9% 0.162 208.8);

  /* Custom Animations */
  --animate-fade-in: fadeIn 0.3s ease-in-out;
  --animate-slide-up: slideUp 0.4s ease-out;
  --animate-slide-down: slideDown 0.4s ease-out;
  --animate-slide-in-right: slideInRight 0.3s ease-out;
  --animate-slide-in-left: slideInLeft 0.3s ease-out;
  --animate-scale-in: scaleIn 0.2s ease-out;
  --animate-bounce-gentle: bounceGentle 0.5s ease-in-out;
  --animate-shimmer: shimmer 2s infinite;
}

.dark {
  --background: oklch(9.8% 0.038 285.8);
  --foreground: oklch(98% 0.016 240);
  --card: oklch(9.8% 0.038 285.8);
  --card-foreground: oklch(98% 0.016 240);
  --popover: oklch(9.8% 0.038 285.8);
  --popover-foreground: oklch(98% 0.016 240);
  --primary: oklch(98% 0.016 240);
  --primary-foreground: oklch(22.4% 0.053 285.8);
  --secondary: oklch(17.5% 0.036 242.3);
  --secondary-foreground: oklch(98% 0.016 240);
  --muted: oklch(17.5% 0.036 242.3);
  --muted-foreground: oklch(65.1% 0.031 244);
  --accent: oklch(17.5% 0.036 242.3);
  --accent-foreground: oklch(98% 0.016 240);
  --destructive: oklch(30.6% 0.125 29.2);
  --destructive-foreground: oklch(98% 0.016 240);
  --border: oklch(17.5% 0.036 242.3);
  --input: oklch(17.5% 0.036 242.3);
  --ring: oklch(83.9% 0.031 243.7);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
    transition-property: background-color, border-color, color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 200ms;
  }

  body {
    @apply bg-background text-foreground;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  }

  html {
    scroll-behavior: smooth;
  }

  /* Disable transitions during theme switch to prevent flash */
  .theme-transitioning * {
    transition: none !important;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }

  ::-webkit-scrollbar-track {
    @apply bg-background;
  }

  ::-webkit-scrollbar-thumb {
    @apply bg-muted-foreground/20 rounded-lg hover:bg-muted-foreground/30;
  }

  /* Screen reader only */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }
}

/* Animation Keyframes */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInRight {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes bounceGentle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes shimmer {
  from { background-position: -1000px 0; }
  to { background-position: 1000px 0; }
}