/* ==========================================================================
   DevMind Design Tokens
   All colors, spacing, typography, and transitions as CSS custom properties.
   Light theme is default; dark theme overrides via [data-theme="dark"].
   ========================================================================== */

:root {
  /* Brand Colors (derived from logo gradient: pink → purple → blue) */
  --dm-primary: #2580BB;
  --dm-primary-light: #2A8CC8;
  --dm-primary-dark: #1E6FA3;
  --dm-primary-50: #EBF5FB;
  --dm-primary-100: #D1E9F6;
  --dm-accent: #8B3494;
  --dm-accent-hover: #7A3090;
  --dm-accent-light: #F5F0F7;
  --dm-success: #10B981;
  --dm-error: #EF4444;

  /* Light Theme (default) */
  --dm-bg-primary: #FFFFFF;
  --dm-bg-secondary: #F8FAFC;
  --dm-bg-tertiary: #F1F5F9;
  --dm-surface: #FFFFFF;
  --dm-surface-hover: #F8FAFC;
  --dm-text-primary: #0F172A;
  --dm-text-secondary: #475569;
  --dm-text-tertiary: #94A3B8;
  --dm-text-inverse: #FFFFFF;
  --dm-border: #E2E8F0;
  --dm-border-light: #F1F5F9;
  --dm-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --dm-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --dm-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --dm-shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --dm-nav-bg: rgba(255, 255, 255, 0.92);
  --dm-code-bg: #F1F5F9;
  --dm-overlay: rgba(15, 23, 42, 0.5);

  /* Typography */
  --dm-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --dm-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --dm-font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Font Sizes */
  --dm-text-xs: 0.75rem;
  --dm-text-sm: 0.875rem;
  --dm-text-base: 1rem;
  --dm-text-lg: 1.125rem;
  --dm-text-xl: 1.25rem;
  --dm-text-2xl: 1.5rem;
  --dm-text-3xl: 1.875rem;
  --dm-text-4xl: 2.25rem;
  --dm-text-5xl: 3rem;
  --dm-text-6xl: 3.75rem;

  /* Line Heights */
  --dm-leading-tight: 1.15;
  --dm-leading-snug: 1.3;
  --dm-leading-normal: 1.6;
  --dm-leading-relaxed: 1.75;

  /* Font Weights */
  --dm-font-normal: 400;
  --dm-font-medium: 500;
  --dm-font-semibold: 600;
  --dm-font-bold: 700;
  --dm-font-extrabold: 800;

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

  /* Border Radius */
  --dm-radius-sm: 0.375rem;
  --dm-radius-md: 0.5rem;
  --dm-radius-lg: 0.75rem;
  --dm-radius-xl: 1rem;
  --dm-radius-2xl: 1.5rem;
  --dm-radius-full: 9999px;

  /* Transitions */
  --dm-transition-fast: 150ms ease;
  --dm-transition-base: 250ms ease;
  --dm-transition-slow: 400ms ease;
  --dm-transition-theme: 350ms ease;

  /* Container */
  --dm-container-sm: 640px;
  --dm-container-md: 768px;
  --dm-container-lg: 1024px;
  --dm-container-xl: 1200px;
  --dm-container-2xl: 1400px;

  /* Z-index scale */
  --dm-z-dropdown: 100;
  --dm-z-sticky: 200;
  --dm-z-fixed: 300;
  --dm-z-overlay: 400;
  --dm-z-modal: 500;
}

/* Dark Theme */
[data-theme="dark"] {
  --dm-bg-primary: #0B1120;
  --dm-bg-secondary: #151D2E;
  --dm-bg-tertiary: #1E293B;
  --dm-surface: #151D2E;
  --dm-surface-hover: #1E293B;
  --dm-text-primary: #F1F5F9;
  --dm-text-secondary: #CBD5E1;
  --dm-text-tertiary: #64748B;
  --dm-text-inverse: #0F172A;
  --dm-border: #1E293B;
  --dm-border-light: #253349;
  --dm-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --dm-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.25), 0 2px 4px -2px rgba(0, 0, 0, 0.15);
  --dm-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.15);
  --dm-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.35), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  --dm-nav-bg: rgba(11, 17, 32, 0.92);
  --dm-code-bg: #1E293B;
  --dm-overlay: rgba(0, 0, 0, 0.6);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --dm-transition-fast: 0ms;
    --dm-transition-base: 0ms;
    --dm-transition-slow: 0ms;
    --dm-transition-theme: 0ms;
  }
}