body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0d0d0d;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: #121212;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.1);
    max-width: 480px;
    width: 90%;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

h2 {
    color: #00f7ff;
    font-size: 26px;
    margin-bottom: 30px;
    text-shadow: 0 0 8px #00f7ff;
}

input[type="text"] {
    width: 100%;
    padding: 14px;
    font-size: 18px;
    border: 1px solid #00f7ff;
    border-radius: 8px;
    background-color: #1e1e1e;
    color: #fff;
    outline: none;
    box-shadow: 0 0 10px rgba(0, 247, 255, 0.3);
    transition: box-shadow 0.3s ease;
    margin-bottom: 20px;
}

input[type="text"]:focus {
    box-shadow: 0 0 15px rgba(0, 247, 255, 0.8);
}

button {
    padding: 12px 24px;
    background-color: #00f7ff;
    border: none;
    border-radius: 8px;
    color: #000;
    font-weight: bold;
    cursor: pointer;
    font-size: 16px;
    box-shadow: 0 0 10px #00f7ff;
    transition: transform 0.2s, box-shadow 0.3s;
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px #00f7ff;
    background-color: #05e4ec;
}

p {
    font-size: 20px;
    color: #ffffff;
    margin-top: 20px;
    text-shadow: 0 0 5px #00f7ff;
    animation: fadeIn 0.6s ease-in-out;
}

@media (max-width: 768px) {
    .container {
        width: 90%;
        padding: 30px 20px;
    }

    h2 {
        font-size: 22px;
    }

    input[type="text"] {
        font-size: 16px;
        padding: 12px;
    }

    button {
        font-size: 14px;
        padding: 10px 18px;
    }

    p {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 25px 15px;
        border-radius: 10px;
    }

    h2 {
        font-size: 20px;
    }

    button {
        width: 100%;
    }

    input[type="text"] {
        width: 100%;
    }
}