/* Base Design Tokens - Non-Color Values */
/* Shared across all themes */
/* AI-Native Builders - Updated 2025-12-20 */

:root {
  /* ============================================
     Typography
     ============================================ */

  /* Font Families */
  --font-family-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-family-heading: 'Space Grotesk', var(--font-family-primary);
  --font-family-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;

  /* Font Sizes */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

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

  /* 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: 1.75;

  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ============================================
     Spacing Scale
     ============================================ */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;  /* 2px */
  --spacing-1: 0.25rem;     /* 4px */
  --spacing-1-5: 0.375rem;  /* 6px */
  --spacing-2: 0.5rem;      /* 8px */
  --spacing-2-5: 0.625rem;  /* 10px */
  --spacing-3: 0.75rem;     /* 12px */
  --spacing-3-5: 0.875rem;  /* 14px */
  --spacing-4: 1rem;        /* 16px */
  --spacing-5: 1.25rem;     /* 20px */
  --spacing-6: 1.5rem;      /* 24px */
  --spacing-7: 1.75rem;     /* 28px */
  --spacing-8: 2rem;        /* 32px */
  --spacing-9: 2.25rem;     /* 36px */
  --spacing-10: 2.5rem;     /* 40px */
  --spacing-11: 2.75rem;    /* 44px */
  --spacing-12: 3rem;       /* 48px */
  --spacing-14: 3.5rem;     /* 56px */
  --spacing-16: 4rem;       /* 64px */
  --spacing-20: 5rem;       /* 80px */
  --spacing-24: 6rem;       /* 96px */
  --spacing-28: 7rem;       /* 112px */
  --spacing-32: 8rem;       /* 128px */

  /* ============================================
     Border Radius
     ============================================ */
  --radius-none: 0;
  --radius-sm: 0.125rem;    /* 2px */
  --radius-default: 0.25rem; /* 4px */
  --radius-md: 0.375rem;    /* 6px */
  --radius-lg: 0.5rem;      /* 8px */
  --radius-xl: 0.75rem;     /* 12px */
  --radius-2xl: 1rem;       /* 16px */
  --radius-3xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;

  /* ============================================
     Z-Index Scale
     ============================================ */
  --z-below: -1;
  --z-base: 0;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-sidebar: 350;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-notification: 800;
  --z-max: 9999;

  /* ============================================
     Container Widths
     ============================================ */
  --container-xs: 320px;
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1400px;
  --container-3xl: 1536px;

  /* ============================================
     Transitions & Easing
     ============================================ */

  /* Durations */
  --duration-instant: 50ms;
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;

  /* Easing Functions */
  --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);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Common Transitions */
  --transition-fast: var(--duration-fast) var(--ease-out);
  --transition-normal: var(--duration-normal) var(--ease-out);
  --transition-slow: var(--duration-slow) var(--ease-out);
  --transition-colors: color var(--duration-fast) var(--ease-out),
                       background-color var(--duration-fast) var(--ease-out),
                       border-color var(--duration-fast) var(--ease-out);
  --transition-transform: transform var(--duration-normal) var(--ease-out-expo);
  --transition-all: all var(--duration-normal) var(--ease-out);

  /* ============================================
     Breakpoints (reference values for media queries)
     ============================================ */
  /* Usage: @media (min-width: 640px) {} */
  /* sm: 640px, md: 768px, lg: 1024px, xl: 1280px, 2xl: 1536px */

  /* ============================================
     Badge Tier Colors (consistent across themes)
     ============================================ */
  --color-badge-bronze: 205, 127, 50;      /* #cd7f32 */
  --color-badge-silver: 192, 192, 192;     /* #c0c0c0 */
  --color-badge-gold: 255, 215, 0;         /* #ffd700 */
  --color-badge-platinum: 229, 228, 226;   /* #e5e4e2 */

  /* ============================================
     Layout Constants
     ============================================ */
  --nav-height: 70px;
  --sidebar-width: 260px;
  --sidebar-width-collapsed: 60px;
  --footer-min-height: 200px;

  /* ============================================
     Opacity Scale
     ============================================ */
  --opacity-0: 0;
  --opacity-5: 0.05;
  --opacity-10: 0.1;
  --opacity-20: 0.2;
  --opacity-25: 0.25;
  --opacity-30: 0.3;
  --opacity-40: 0.4;
  --opacity-50: 0.5;
  --opacity-60: 0.6;
  --opacity-70: 0.7;
  --opacity-75: 0.75;
  --opacity-80: 0.8;
  --opacity-90: 0.9;
  --opacity-95: 0.95;
  --opacity-100: 1;

  /* ============================================
     Border Widths
     ============================================ */
  --border-0: 0;
  --border-1: 1px;
  --border-2: 2px;
  --border-3: 3px;
  --border-4: 4px;
  --border-8: 8px;
}

/* ============================================
   Utility Classes
   ============================================ */

/* Generic hide */
.hidden {
  display: none !important;
}

/* Auth-based visibility (body.logged-in set by auth-state.js) */
.show-when-logged-in {
  display: none !important;
}
body.logged-in .show-when-logged-in {
  display: revert !important;
}
body.logged-in .hide-when-logged-in {
  display: none !important;
}