body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background-color: #0a0a0a;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #0ff;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
    text-align: center;
    width: 320px;
}

.logo {
    width: 150px;
    margin-bottom: 20px;
}

h2 {
    color: #fff;
    text-shadow: 0 0 10px #0ff;
    margin-bottom: 30px;
}

.input-group {
    position: relative;
    margin-bottom: 30px;
}

.input-group input {
    width: 100%;
    padding: 10px 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid #fff;
    color: #fff;
    font-size: 1rem;
    outline: none;
}

.input-group label {
    position: absolute;
    top: 10px;
    left: 0;
    color: #aaa;
    font-size: 1rem;
    pointer-events: none;
    transition: 0.3s;
}

.input-group input:focus ~ label,
.input-group input:valid ~ label {
    top: -15px;
    left: 0;
    color: #0ff;
    font-size: 0.8rem;
}

.login-button {
    width: 100%;
    padding: 12px;
    border: 1px solid #0ff;
    border-radius: 4px;
    background-color: rgba(0, 255, 255, 0.2);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.login-button:hover {
    background-color: rgba(0, 255, 255, 0.4);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.6);
}

.back-link {
    margin-top: 20px;
}

.back-link a {
    color: #0ff;
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .login-container {
        width: 85%;
        padding: 20px;
    }
}