.backbtn {
    position: fixed;
    z-index: 9999;
    top: 0.5rem;
    left: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #fff;
    color: #333;
    border: 1px solid #333;
    border-radius: 0.25rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease;
    transition: color 0.3s ease;
    font-family: sans-serif;
    height: 35px;
}

.backbtn:hover {
    background-color: #11d84d;
    color: #fff;
}

body {
    background-color: #121212;
    color: white;
    font-family: Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

#scene {
    size: 10%;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    position: absolute;
    overflow: hidden;
}

#content {
    display: flex;
    flex-direction: column;
    align-items: center;
    top: 5%;
    left: 35%;
    right: 35%;
    width: 30%;
    position: absolute;
    margin: auto;
    z-index: 1;
}

.section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
    height: 100%;
    padding-bottom: 5%;
    z-index: 2;
    background-color: rgba(70, 70, 70, 0.7);
    border-radius: 5%;
    border: 5px solid black;
}

h1 {
    margin-top: 7.5%;
    margin-bottom: 2%;
    font-size: 2vw;
}

.ball {
    width: 25vw;
    height: 25vw;
    max-width: 500px;
    max-height: 500px;
    aspect-ratio: 1 / 1;
    background-color: black;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 10%;
    margin-bottom: 2%;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.window {
    width: 12vw;
    height: 12vw;
    max-width: 30%;
    max-height: 30%;
    background-color: #0a0a0a;
    border-radius: 50%;
    padding: 1%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 10px rgba(0, 229, 255, 0.5);
}

.answer {
    color: #00e5ff;
    font-weight: bold;
    text-align: center;
    padding: 2%;
    font-size: 1.3vw;
    opacity: 0;
    transition: opacity 0.4s ease;
}

input {
    background-color: #333;
    color: white;
    padding: 2%;
    width: 50%;
    border: 2px solid gray;
    border-radius: 5px;
    margin-bottom: 10px;
}

button {
    padding: 2% 4%;
    background-color: #00e5ff;
    color: black;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #00bcd4;
}