:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: #1e293b;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-primary: #38bdf8;--accent-secondary: #818cf8;--border-color: #334155;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "Fira Code", monospace;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 2rem;--spacing-xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: 1rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .3s ease}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f1f5f9;--bg-card: #ffffff;--text-primary: #0f172a;--text-secondary: #64748b;--accent-primary: #0ea5e9;--accent-secondary: #6366f1;--border-color: #e2e8f0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.grid{display:grid}.gap-md{gap:var(--spacing-md)}.text-center{text-align:center}.text-accent{color:var(--accent-primary)}.mt-lg{margin-top:var(--spacing-lg)}