/**
 * Vibekit Design Tokens
 * A boring but accessible design system for internal tools.
 *
 * Philosophy: Maximum clarity, minimum distraction.
 * - High contrast for readability
 * - Generous spacing for scannability
 * - System fonts for familiarity
 * - Obvious interactive states
 */

:root {
  /* ============================================
   * SPACING
   * Based on 4px grid. Use consistently.
   * ============================================ */
  --vk-space-0: 0;
  --vk-space-1: 0.25rem;   /* 4px - tight */
  --vk-space-2: 0.5rem;    /* 8px - compact */
  --vk-space-3: 0.75rem;   /* 12px - default */
  --vk-space-4: 1rem;      /* 16px - comfortable */
  --vk-space-5: 1.25rem;   /* 20px */
  --vk-space-6: 1.5rem;    /* 24px - sections */
  --vk-space-8: 2rem;      /* 32px - large gaps */
  --vk-space-10: 2.5rem;   /* 40px */
  --vk-space-12: 3rem;     /* 48px - page padding */

  /* ============================================
   * TYPOGRAPHY
   * System fonts for instant loading and familiarity.
   * ============================================ */
  --vk-font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --vk-font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'Segoe UI Mono', 'Roboto Mono', Menlo, Monaco, Consolas, monospace;

  /* Font sizes - deliberately limited */
  --vk-text-xs: 0.75rem;     /* 12px - captions, badges */
  --vk-text-sm: 0.875rem;    /* 14px - secondary text */
  --vk-text-base: 1rem;      /* 16px - body text */
  --vk-text-lg: 1.125rem;    /* 18px - emphasized */
  --vk-text-xl: 1.25rem;     /* 20px - section headers */
  --vk-text-2xl: 1.5rem;     /* 24px - page titles */
  --vk-text-3xl: 1.875rem;   /* 30px - hero */

  /* Line heights */
  --vk-leading-none: 1;
  --vk-leading-tight: 1.25;
  --vk-leading-snug: 1.375;
  --vk-leading-normal: 1.5;
  --vk-leading-relaxed: 1.625;

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

  /* ============================================
   * COLORS - LIGHT MODE
   * High contrast, accessible palette.
   * All pairs meet WCAG AA contrast requirements.
   * ============================================ */

  /* Backgrounds */
  --vk-color-bg: #ffffff;
  --vk-color-bg-subtle: #f8f9fa;
  --vk-color-bg-muted: #f1f3f4;
  --vk-color-bg-emphasis: #e8eaed;

  /* Foregrounds */
  --vk-color-text: #1a1a1a;
  --vk-color-text-secondary: #5f6368;
  --vk-color-text-muted: #80868b;
  --vk-color-text-disabled: #bdc1c6;

  /* Borders */
  --vk-color-border: #dadce0;
  --vk-color-border-strong: #bdc1c6;
  --vk-color-border-subtle: #e8eaed;

  /* Primary - Blue (accessible, professional) */
  --vk-color-primary: #1a73e8;
  --vk-color-primary-hover: #1557b0;
  --vk-color-primary-text: #ffffff;
  --vk-color-primary-subtle: #e8f0fe;

  /* Danger - Red */
  --vk-color-danger: #d93025;
  --vk-color-danger-hover: #b3261e;
  --vk-color-danger-text: #ffffff;
  --vk-color-danger-subtle: #fce8e6;

  /* Success - Green */
  --vk-color-success: #1e8e3e;
  --vk-color-success-hover: #137333;
  --vk-color-success-text: #ffffff;
  --vk-color-success-subtle: #e6f4ea;

  /* Warning - Yellow/Orange */
  --vk-color-warning: #f9ab00;
  --vk-color-warning-hover: #e69500;
  --vk-color-warning-text: #1a1a1a;
  --vk-color-warning-subtle: #fef7e0;

  /* Focus - High visibility */
  --vk-color-focus: rgba(26, 115, 232, 0.5);
  --vk-color-focus-ring: #1a73e8;

  /* ============================================
   * BORDERS & RADII
   * Subtle, functional corners.
   * ============================================ */
  --vk-radius-sm: 4px;
  --vk-radius-md: 6px;
  --vk-radius-lg: 8px;
  --vk-radius-xl: 12px;
  --vk-radius-full: 9999px;

  --vk-border-width: 1px;

  /* ============================================
   * SHADOWS
   * Minimal, functional elevation.
   * ============================================ */
  --vk-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --vk-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --vk-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --vk-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* ============================================
   * TRANSITIONS
   * Quick, subtle animations.
   * ============================================ */
  --vk-transition-fast: 100ms ease;
  --vk-transition-normal: 150ms ease;
  --vk-transition-slow: 250ms ease;

  /* ============================================
   * LAYOUT
   * Common dimensions.
   * ============================================ */
  --vk-header-height: 56px;
  --vk-sidebar-width: 240px;
  --vk-content-max-width: 1200px;
  --vk-form-max-width: 600px;
}

/* ============================================
 * DARK MODE
 * Inverted palette with maintained contrast.
 * ============================================ */
:root.sl-theme-dark,
[data-theme="dark"] {
  /* Backgrounds */
  --vk-color-bg: #1a1a1a;
  --vk-color-bg-subtle: #242424;
  --vk-color-bg-muted: #2d2d2d;
  --vk-color-bg-emphasis: #3c3c3c;

  /* Foregrounds */
  --vk-color-text: #e8eaed;
  --vk-color-text-secondary: #9aa0a6;
  --vk-color-text-muted: #80868b;
  --vk-color-text-disabled: #5f6368;

  /* Borders */
  --vk-color-border: #3c3c3c;
  --vk-color-border-strong: #5f6368;
  --vk-color-border-subtle: #2d2d2d;

  /* Primary - Lighter for dark backgrounds */
  --vk-color-primary: #8ab4f8;
  --vk-color-primary-hover: #aecbfa;
  --vk-color-primary-text: #1a1a1a;
  --vk-color-primary-subtle: #1a3a5c;

  /* Danger */
  --vk-color-danger: #f28b82;
  --vk-color-danger-hover: #f6aea9;
  --vk-color-danger-text: #1a1a1a;
  --vk-color-danger-subtle: #5c1a1a;

  /* Success */
  --vk-color-success: #81c995;
  --vk-color-success-hover: #a8dab5;
  --vk-color-success-text: #1a1a1a;
  --vk-color-success-subtle: #1a3c25;

  /* Warning */
  --vk-color-warning: #fdd663;
  --vk-color-warning-hover: #fee293;
  --vk-color-warning-text: #1a1a1a;
  --vk-color-warning-subtle: #5c4a1a;

  /* Focus */
  --vk-color-focus: rgba(138, 180, 248, 0.5);
  --vk-color-focus-ring: #8ab4f8;

  /* Shadows - more pronounced in dark mode */
  --vk-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --vk-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --vk-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --vk-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root {
    --vk-transition-fast: 0ms;
    --vk-transition-normal: 0ms;
    --vk-transition-slow: 0ms;
  }
}