:root {
  /* --- Color Palette (Light Mode) --- */
  --color-bg-primary:        #ffffff;
  --color-bg-secondary:      #f9f9f9;
  --color-bg-tertiary:       #f2f2f2;
  --color-bg-card:           #ffffff;

  --color-surface-elevated:  #ffffff;
  --color-surface-overlay:   rgba(255,255,255,0.95);

  --color-navy:              #000000;
  --color-charcoal:          #1a1a1a;
  --color-charcoal-mid:      #333333;

  --color-accent:            #d90429;        
  --color-accent-hover:      #ef233c;
  --color-accent-light:      #ffeded;
  --color-accent-teal:       #000000;

  --color-text-primary:      #000000;
  --color-text-secondary:    #4d4d4d;
  --color-text-muted:        #808080;
  --color-text-inverse:      #ffffff;

  --color-border:            #e6e6e6;
  --color-border-strong:     #cccccc;

  --color-success:           #10b981;
  --color-warning:           #d19e45;
  --color-error:             #ef4444;

  /* --- Typography --- */
  --font-display:    'Montserrat', sans-serif;
  --font-body:       'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-cursive:    'Dancing Script', cursive;

  --text-xs:    0.75rem;    /* 12px */
  --text-sm:    0.875rem;   /* 14px */
  --text-base:  1rem;       /* 16px */
  --text-md:    1.125rem;   /* 18px */
  --text-lg:    1.25rem;    /* 20px */
  --text-xl:    1.5rem;     /* 24px */
  --text-2xl:   2rem;       /* 32px */
  --text-3xl:   2.5rem;     /* 40px */
  --text-4xl:   3rem;       /* 48px */
  --text-5xl:   3.75rem;    /* 60px */

  --leading-tight:   1.2;
  --leading-snug:    1.375;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;

  --weight-normal:   400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-black:    900;

  /* --- Spacing (8px base) --- */
  --sp-1:   0.25rem;   /* 4px  */
  --sp-2:   0.5rem;    /* 8px  */
  --sp-3:   0.75rem;   /* 12px */
  --sp-4:   1rem;      /* 16px */
  --sp-5:   1.25rem;   /* 20px */
  --sp-6:   1.5rem;    /* 24px */
  --sp-8:   2rem;      /* 32px */
  --sp-10:  2.5rem;    /* 40px */
  --sp-12:  3rem;      /* 48px */
  --sp-16:  4rem;      /* 64px */
  --sp-20:  5rem;      /* 80px */
  --sp-24:  6rem;      /* 96px */

  /* --- Border Radius --- */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;
  --radius-xl:  20px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-xs:  0 1px 2px rgba(13,27,46,0.05);
  --shadow-sm:  0 2px 8px rgba(13,27,46,0.08);
  --shadow-md:  0 4px 20px rgba(13,27,46,0.10);
  --shadow-lg:  0 8px 40px rgba(13,27,46,0.14);
  --shadow-xl:  0 16px 64px rgba(13,27,46,0.18);
  --shadow-accent: 0 4px 24px rgba(0,102,204,0.28);

  /* --- Transitions --- */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* --- Layout --- */
  --container-max:  1280px;
  --nav-height:     72px;

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