*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff}.container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.signup-card{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:1rem;padding:2.5rem;width:100%;max-width:400px}.signup-card h1{font-size:1.75rem;margin-bottom:.5rem;background:linear-gradient(90deg,#00d9ff,#0f8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.signup-card p{color:#a0a0a0;margin-bottom:2rem}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem;font-size:.875rem;color:silver}.form-group input{width:100%;padding:.75rem 1rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.2);border-radius:.5rem;color:#fff;font-size:1rem;transition:border-color .2s}.form-group input:focus{outline:none;border-color:#00d9ff}.form-group input::placeholder{color:#606060}button[type=submit]{width:100%;padding:.875rem;background:linear-gradient(90deg,#00d9ff,#0f8);border:none;border-radius:.5rem;color:#1a1a2e;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s}button[type=submit]:hover{opacity:.9}button[type=submit]:disabled{opacity:.5;cursor:not-allowed}.error{background:#ff4d4d1a;border:1px solid rgba(255,77,77,.3);color:#ff6b6b;padding:.75rem;border-radius:.5rem;margin-bottom:1rem;font-size:.875rem}.success{background:#00ff881a;border:1px solid rgba(0,255,136,.3);color:#0f8;padding:.75rem;border-radius:.5rem;margin-bottom:1rem;font-size:.875rem}