:root{--background:#0a0a0a;--surface:#1a1a1a;--surface-highlight:#2a2a2a;--primary:#00ff9d;--primary-dim:#00cc7d;--text-main:#fff;--text-secondary:#a0a0a0;--danger:#f44;--success:#00ff9d;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:20px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--text-main);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;flex-direction:column;min-height:100vh;display:flex}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.container{width:100%;max-width:600px;margin:0 auto;padding:16px}.btn{border-radius:var(--radius-md);border:none;justify-content:center;align-items:center;padding:12px 24px;font-weight:600;transition:transform .1s;display:inline-flex}.btn:active{transform:scale(.98)}.btn-primary{background-color:var(--primary);color:#000}.btn-ghost{color:var(--text-secondary);background-color:#0000}.card{background-color:var(--surface);border-radius:var(--radius-md);border:1px solid var(--surface-highlight);padding:16px}.input{background-color:var(--surface-highlight);color:var(--text-main);border-radius:var(--radius-sm);border:1px solid #0000;width:100%;padding:12px;font-size:16px}.input:focus{border-color:var(--primary);outline:none}