/* Design System - CSS Custom Properties */
:root {
  /* Neutrals */
  --color-bg: #f9f9f9;
  --color-bg-elevated: #ffffff;
  --color-surface: #ffffff;
  --color-surface-muted: #f9f9f9;
  --color-bg-hover: #f3f4f6;
  --color-bg-active: #e8eaed;
  --color-page: #ffffff;
  --color-page-accent: transparent;
  --color-border: #c7cdd4;
  --color-border-hover: #9aa0a6;
  --color-text-primary: #202124;
  --color-text-secondary: #3c4043;
  --color-text-tertiary: #5f6368;
  
  /* Brand / Accent */
  --color-accent: #4285f4;
  --color-accent-hover: #3367d6;
  --color-accent-light: #e8f0fe;
  
  /* Semantic */
  --color-success: #34a853;
  --color-success-light: #e6f4ea;
  --color-warning: #fbbc04;
  --color-warning-light: #fef7e0;
  --color-error: #ea4335;
  --color-error-light: #fce8e6;
  --color-info: #4285f4;
  --color-info-light: #e8f0fe;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(32, 33, 36, 0.08);
  --shadow-md: 0 2px 6px rgba(32, 33, 36, 0.12);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.16);
  
  /* Font families */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Font sizes */
  --text-xs: 0.75rem;    /* 12px - legal, captions */
  --text-sm: 0.875rem;   /* 14px - secondary text */
  --text-base: 1rem;     /* 16px - body text */
  --text-lg: 1.125rem;   /* 18px - questions */
  --text-xl: 1.25rem;    /* 20px - headings */
  
  /* Line heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  
  /* Spacing scale */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  
  /* Border radius */
  --radius-sm: 3px;     /* Buttons, inputs */
  --radius-md: 6px;     /* Cards */
  --radius-lg: 8px;     /* Modals */
  --radius-full: 9999px; /* Pills */
  
  /* Widget dimensions */
  --widget-width: 328px;
  --widget-height: 78px;
  --widget-expanded-width: 480px;
  --widget-expanded-min-height: 0px;
  
  /* Animation durations */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 400ms;
  --duration-slower: 800ms;
  
  /* Easing functions */
  --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0.0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}