/* ============================================================
   BizDocs AI — Design Tokens
   Primary:   #2563EB  (electric blue)
   Secondary: #7C3AED  (violet/purple)
   Background:#F5F7FF
   Text:      #0B163F  (dark navy)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand colours */
  --clr-primary:      #2563EB;
  --clr-primary-dark: #1D4ED8;
  --clr-secondary:    #7C3AED;
  --clr-cyan:         #06B6D4;
  --clr-success:      #10B981;
  --clr-warning:      #F59E0B;
  --clr-danger:       #EF4444;
  --clr-bg:           #F5F7FF;
  --clr-surface:      #FFFFFF;
  --clr-text:         #0B163F;
  --clr-text-muted:   #64748B;
  --clr-border:       #E2E8F0;
  --clr-sidebar-bg:   #0B163F;
  --clr-sidebar-text: #CBD5E1;
  --clr-sidebar-active: #2563EB;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --grad-card:    linear-gradient(135deg, #EFF6FF 0%, #F5F3FF 100%);

  /* Radius */
  --r-sm:   8px;
  --r-md:   12px;
  --r-lg:   16px;
  --r-xl:   20px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.08), 0 4px 6px rgba(0,0,0,.04);
  --shadow-card: 0 2px 8px rgba(37,99,235,.08);

  /* Typography */
  --font:       'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:  'Fira Code', 'Consolas', monospace;

  /* Spacing scale (multiples of 4px) */
  --sp-1:  4px;  --sp-2:  8px;  --sp-3: 12px;  --sp-4: 16px;
  --sp-5: 20px;  --sp-6: 24px;  --sp-8: 32px;  --sp-10: 40px;
  --sp-12: 48px; --sp-16: 64px;

  /* Sidebar */
  --sidebar-w: 240px;
  --header-h:  64px;

  /* Transitions */
  --transition: 150ms ease;
}

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }

/* Utility: visually hidden but accessible */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* Inter from Google Fonts (loaded in index.html) */