/* =========================================
   1. VARIABLES & THEME CONFIGURATION
   ========================================= */

   :root {
    /* -------------------------------------
       Typography
       ------------------------------------- */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    
    --text-xs: 0.75rem;   /* 12px */
    --text-sm: 0.875rem;  /* 14px */
    --text-base: 1.125rem; /* 18px - per spec for body readability */
    --text-lg: 1.25rem;   /* 20px */
    --text-xl: 1.5rem;    /* 24px */
    --text-2xl: 1.875rem; /* 30px */
    --text-3xl: 2.25rem;  /* 36px */
    --text-4xl: 3rem;     /* 48px */
    --text-5xl: 3.75rem;  /* 60px */

    --font-normal: 400;
    --font-medium: 500;
    --font-bold: 700;

    --line-height-body: 1.65;
    --line-height-heading: 1.2;

    /* -------------------------------------
       Spacing
       ------------------------------------- */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    --container-max-width: 1280px;
    --container-padding: 2rem;

    /* -------------------------------------
       Light Mode (Default)
       ------------------------------------- */
    --color-bg: #FFFFFF;
    --color-bg-alt: #F6F6F6;
    --color-text-primary: #000000;
    --color-text-secondary: #4A4A4A;
    --color-border: #E5E5E5;
    --color-accent: #0A66C2; /* LinkedIn Blue */
    --color-accent-hover: #004182;
    --color-card-bg: #FFFFFF;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* -------------------------------------
       Glassmorphism & Effects
       ------------------------------------- */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-blur: blur(12px);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* -------------------------------------
   Dark Mode Override
   ------------------------------------- */
[data-theme="dark"] {
    --color-bg: #0D0D0D;
    --color-bg-alt: #1A1A1A;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #CFCFCF;
    --color-border: #2A2A2A;
    --color-accent: #4EA8FF;
    --color-accent-hover: #7BC0FF;
    --color-card-bg: #1A1A1A;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.7);

    --glass-bg: rgba(13, 13, 13, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}