/* ============================================
   EF SOLUTION — Design Tokens & Reset
   ============================================ */

:root {
  --blue-900: #0d2a5e;
  --blue-800: #1a3a7a;
  --blue-700: #1e4d9b;
  --blue-600: #2563c8;
  --blue-500: #3579e3;
  --blue-400: #5a9af0;
  --blue-300: #93bff7;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;

  --steel-dark: #1c3461;
  --steel-mid:  #2b4a8a;
  --steel-light: #4f76c8;

  --white:    #ffffff;
  --gray-50:  #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --primary:        var(--blue-700);
  --primary-dark:   var(--blue-900);
  --primary-light:  var(--blue-400);
  --accent:         var(--steel-light);
  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted:     var(--gray-400);
  --border:         var(--gray-200);
  --surface:        var(--gray-50);

  --font-display: 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --space-1:  0.25rem;  --space-2:  0.5rem;   --space-3:  0.75rem;
  --space-4:  1rem;     --space-5:  1.25rem;  --space-6:  1.5rem;
  --space-8:  2rem;     --space-10: 2.5rem;   --space-12: 3rem;
  --space-16: 4rem;     --space-20: 5rem;     --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.05);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.10), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-blue: 0 8px 32px rgba(30,77,155,0.18);

  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast:   150ms;
  --duration-normal: 300ms;
  --duration-slow:   600ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }