:root{--color-bg: #0f172a;--color-surface: #1e293b;--color-surface-hover: #334155;--color-primary: #38bdf8;--color-primary-hover: #0ea5e9;--color-secondary: #818cf8;--color-text-main: #f8fafc;--color-text-muted: #94a3b8;--color-border: #334155;--color-success: #4ade80;--color-error: #f87171;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-glow: 0 0 20px rgba(56, 189, 248, .15)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text-main);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none;transition:color .2s}a:hover{color:var(--color-primary-hover)}input,select,button{font-family:inherit;font-size:1rem}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:all .2s;border:none}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;box-shadow:var(--shadow-glow)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 30px #38bdf840}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-md)}.text-center{text-align:center}.mt-4{margin-top:1rem}.mb-4{margin-bottom:1rem}