body {
    font-family: 'Comic Sans MS', cursive, sans-serif;
    background: linear-gradient(135deg, #ffcc00, #ff0099);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: linear-gradient(45deg, #f6fe00, #ff0099);
    border-radius: 20px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 500px;
    padding: 30px;
    box-sizing: border-box;
    text-align: center;
}

h1 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 2em;
    text-shadow: 2px 2px #000000;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
    color: #ffffff;
    text-shadow: 1px 1px #000000;
}

input {
    width: calc(100% - 22px);
    padding: 15px;
    border: 3px solid #000000;
    border-radius: 12px;
    box-sizing: border-box;
    font-size: 18px;
    color: #000000;
    background: #ffffff;
}

input:focus {
    border-color: #00ffff;
    outline: none;
    background: #ffccff;
}

button {
    width: 100%;
    padding: 15px;
    background-color: #00a6ff;
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 20px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s;
}

button:hover {
    background-color: #ff3300;
    transform: scale(1.05);
}

#result {
    margin-top: 20px;
}

#wavelength-result {
    font-size: 22px;
    color: #bb00ff;
    font-weight: bold;
    text-shadow: 1px 1px #000000;
}