body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #0f0f0f, #1c1c1c);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: #1e1e1e;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    text-align: center;
    width: 350px;
}

h1 {
    margin-bottom: 20px;
    color: #00ffff;
}

input {
    width: 80%;
    padding: 10px;
    border-radius: 8px;
    border: none;
    outline: none;
    margin-bottom: 15px;
}

button {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    background-color: #00ffff;
    color: black;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

button:hover {
    background-color: #00cccc;
}

.result {
    margin-top: 20px;
    text-align: left;
}

.result p {
    margin: 5px 0;
}

.error {
    color: red;
    margin-top: 10px;
}