body{background-color:#3498db;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;margin:0;padding:0;display:flex;justify-content:center;align-items:center;min-height:100vh}.card{background-color:#fff;padding:2rem;border-radius:12px;width:350px;text-align:center;box-shadow:0 5px 15px #0003}h2{font-size:1.8rem;margin-bottom:1.5rem}form{display:flex;flex-direction:column;gap:1rem}input{border:none;border-bottom:2px solid #ddd;padding:.5rem 0;font-size:1rem;transition:border-color .3s}input:focus{border-color:#0d6efd;outline:none}.forgot-password{font-size:.9rem;color:#666;text-align:right;margin-bottom:1rem}button{background-color:#0d6efd;color:#fff;border:none;border-radius:20px;padding:.6rem;font-weight:700;cursor:pointer;transition:background-color .3s}button:hover{background-color:#0257d5}.signup{margin-top:1rem;font-size:.9rem}.signup a{color:#0d6efd;text-decoration:none}.signup a:hover{text-decoration:underline}