/* variables.css — Design Tokens */

:root {
  /* === Colors === */
  --color-primary:        #00509D;
  --color-primary-dark:   #003a75;
  --color-primary-light:  #1a6ab5;
  --color-secondary:      #CEE1F5;
  --color-secondary-light:#e8f2fb;
  --color-secondary-dark: #b0cce8;

  --color-bg:             #FFFFFF;
  --color-bg-subtle:      #F8FAFB;
  --color-bg-section:     #F4F7FA;

  --color-text:           #212529;
  --color-text-muted:     #6B7280;
  --color-text-light:     #9CA3AF;
  --color-text-inverted:  #FFFFFF;

  --color-border:         #E5E7EB;
  --color-border-focus:   #00509D;

  --color-success:        #16A34A;
  --color-error:          #DC2626;
  --color-error-light:    #FEE2E2;
  --color-warning:        #D97706;

  --color-accent-red:     #C0392B;

  /* === Typography === */
  --font-family-base:     'Rubik', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --font-size-xs:         0.75rem;    /* 12px */
  --font-size-sm:         0.875rem;   /* 14px */
  --font-size-base:       1rem;       /* 16px */
  --font-size-md:         1.125rem;   /* 18px */
  --font-size-lg:         1.25rem;    /* 20px */
  --font-size-xl:         1.5rem;     /* 24px */
  --font-size-2xl:        1.875rem;   /* 30px */
  --font-size-3xl:        2.25rem;    /* 36px */
  --font-size-4xl:        3rem;       /* 48px */
  --font-size-5xl:        3.5rem;     /* 56px */

  --font-weight-regular:  400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;

  --line-height-tight:    1.2;
  --line-height-snug:     1.4;
  --line-height-base:     1.6;
  --line-height-relaxed:  1.75;

  --letter-spacing-tight: -0.025em;
  --letter-spacing-base:  0em;
  --letter-spacing-wide:  0.025em;
  --letter-spacing-wider: 0.08em;

  /* === Spacing (8px base) === */
  --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 */
  --space-16:   4rem;      /* 64px */
  --space-20:   5rem;      /* 80px */
  --space-24:   6rem;      /* 96px */
  --space-32:   8rem;      /* 128px */

  /* === Layout === */
  --container-max:        1200px;
  --container-narrow:     800px;
  --container-wide:       1440px;
  --container-padding:    var(--space-6);

  --header-height:        120px;
  --header-height-scrolled: 92px;

  /* === Border Radius === */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* === Shadows === */
  --shadow-xs:  0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md:  0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-lg:  0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);
  --shadow-xl:  0 20px 25px rgba(0, 0, 0, 0.08), 0 8px 10px rgba(0, 0, 0, 0.04);
  --shadow-primary: 0 4px 20px rgba(0, 80, 157, 0.25);
  --shadow-card-hover: 0 12px 32px rgba(0, 80, 157, 0.12), 0 4px 8px rgba(0, 0, 0, 0.06);

  /* === Transitions === */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* === Z-Index === */
  --z-below:    -1;
  --z-base:     0;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-toast:    500;

  /* === Glassmorphism === */
  --glass-bg:           rgba(255, 255, 255, 0.78);
  --glass-bg-strong:    rgba(255, 255, 255, 0.94);
  --glass-bg-dark:      rgba(0, 58, 117, 0.72);
  --glass-border:       rgba(255, 255, 255, 0.72);
  --glass-border-dark:  rgba(255, 255, 255, 0.18);
  --glass-blur:         blur(20px) saturate(200%);
  --glass-blur-sm:      blur(12px) saturate(160%);
  --glass-shadow:       0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --glass-shadow-hover: 0 16px 48px rgba(0, 80, 157, 0.14), 0 4px 12px rgba(0, 0, 0, 0.08);

  /* === Header Layout === */
  --header-top-gap:     20px;
  --header-offset:      calc(var(--header-height) + 28px);

  /* === Breakpoints (for documentation — use in media queries directly) === */
  /* sm: 640px, md: 768px, lg: 1024px, xl: 1280px */
}