/* Trad Diff Design System — CSS Custom Properties */
/* Generated from design-system/tokens.json */

:root {
  /* Colors — Primary (Blue: Trust & Technology) */
  --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-primary-950: #0c2340;

  /* Colors — Secondary (Purple: Innovation & Vision) */
  --color-secondary-50: #f3e8ff;
  --color-secondary-100: #e9d5ff;
  --color-secondary-200: #d8b4fe;
  --color-secondary-300: #c084fc;
  --color-secondary-400: #a855f7;
  --color-secondary-500: #9333ea;
  --color-secondary-600: #7e22ce;
  --color-secondary-700: #6b21a8;
  --color-secondary-800: #581c87;
  --color-secondary-900: #3f0f5c;
  --color-secondary-950: #240056;

  /* Colors — Accent (Pink → Amber: Warmth & Energy) */
  --color-accent-50: #fef3c7;
  --color-accent-100: #fde68a;
  --color-accent-200: #fcd34d;
  --color-accent-300: #fbbf24;
  --color-accent-400: #f59e0b;
  --color-accent-500: #ec4899;
  --color-accent-600: #d97706;
  --color-accent-700: #b45309;
  --color-accent-800: #92400e;
  --color-accent-900: #78350f;
  --color-accent-950: #451a03;

  /* Colors — Semantic */
  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;
  --color-success-900: #15803d;

  --color-warning-50: #fef3c7;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-warning-900: #92400e;

  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  --color-error-900: #7f1d1d;

  /* Colors — Neutral (Grayscale) */
  --color-neutral-0: #ffffff;
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2937;
  --color-neutral-900: #111827;
  --color-neutral-950: #030712;

  /* Typography — Font Families */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;

  /* Typography — Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Typography — Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Typography — Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Typography — Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0em;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* Spacing */
  --space-0: 0px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-none: 0px;
  --radius-xs: 0.125rem;
  --radius-sm: 0.25rem;
  --radius-base: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-none: none;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions — Duration */
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;

  /* Transitions — Easing */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  /* Semantic Aliases (for easier reference) */
  --color-primary: var(--color-primary-500);
  --color-secondary: var(--color-secondary-500);
  --color-accent: var(--color-accent-500);
  --color-success: var(--color-success-500);
  --color-warning: var(--color-warning-500);
  --color-error: var(--color-error-500);

  --text-base: var(--font-size-base);
  --text-hero: var(--font-size-5xl);
  --text-lg: var(--font-size-lg);

  --space-section: var(--space-16);
}

/* Apply to body */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-neutral-900);
  background-color: var(--color-neutral-50);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

/* Links */
a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-out);
}

a:hover {
  color: var(--color-primary-700);
}

/* Code */
code, pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

pre {
  background-color: var(--color-neutral-100);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

/* Buttons (utility classes) */
.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: all var(--duration-base) var(--ease-out);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-secondary-600);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--color-secondary-700);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-accent-500);
  color: white;
}

.btn-accent:hover {
  background-color: var(--color-accent-600);
  box-shadow: var(--shadow-md);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}