:root{font-family:Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;color:#f8f8f8;background-color:#0c0f16;margin:0;padding:0}*{box-sizing:border-box}body{margin:0;min-height:100vh;background-color:#0c0f16}@keyframes slideIn{0%{transform:translateY(8px);opacity:0}to{transform:translateY(0);opacity:1}}a{color:inherit}button,input,textarea{font-family:inherit}.app-shell{min-height:100vh;background:linear-gradient(180deg,#0c0f16,#131a26);color:#f2f2f2}.card{background:#1b2433;border-radius:16px;padding:24px;box-shadow:0 10px 30px #0006}.primary-btn{background:#f8b610;color:#0c0f16;border:none;border-radius:8px;padding:12px 24px;cursor:pointer;font-size:1rem;font-weight:600;transition:opacity .2s ease}.primary-btn:disabled{opacity:.4;cursor:not-allowed}