:root {
    /* Sophisticated Color Palette */
    --c-primary: #0f172a; /* Deep Midnight Slate */
    --c-primary-light: #1e293b;
    --c-secondary: #0ea5e9; /* Electric Cyan/Blue Accent */
    --c-secondary-hover: #0284c7;
    --c-accent: #6366f1; /* Indigo Accent for gradients */
    
    /* Vibrant Gradients */
    --gradient-primary: linear-gradient(135deg, var(--c-secondary), var(--c-accent));
    --gradient-glow: linear-gradient(135deg, rgba(14, 165, 233, 0.5), rgba(99, 102, 241, 0.5));
    --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.5) 100%);

    /* Status Colors (Rich versions) */
    --c-success: #10b981;
    --c-success-light: #d1fae5;
    --c-warning: #f59e0b;
    --c-warning-light: #fef3c7;
    --c-danger: #ef4444;
    --c-danger-light: #fee2e2;

    /* Backgrounds & Surfaces */
    --c-bg: #f4f7fb; /* Slight cool grey/blue tint for background */
    --c-surface: #ffffff;
    --c-text-main: #1e293b;
    --c-text-muted: #64748b;
    --c-border: rgba(226, 232, 240, 0.8);
    --c-border-solid: #e2e8f0;
    
    /* Glassmorphism Variables */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-blur: blur(12px);
    
    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    
    /* 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;
    
    /* Shadows & Depths */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.04);
    --shadow-lg: 0 12px 24px -4px rgb(0 0 0 / 0.1), 0 4px 8px -4px rgb(0 0 0 / 0.06);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

body {
    background-color: var(--c-bg);
    background-image: 
        radial-gradient(at 40% 20%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(14, 165, 233, 0.08) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(14, 165, 233, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--c-text-main);
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}