body {
    font-family: 'Nanum Gothic', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #000;
    color: #fff;
}

.container {
    text-align: center;
}

h1 {
    color: #f00;
    font-size: 3em;
    text-shadow: 0 0 10px #f00;
}

p {
    color: #ccc;
}

.privacy-notice {
    font-size: 0.8em;
    color: #666;
    margin-top: 5px;
}

textarea {
    width: 80%;
    height: 100px;
    background-color: #111;
    border: 1px solid #333;
    color: #fff;
    padding: 10px;
    margin-top: 20px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: 1px solid #f00;
    border-radius: 5px;
    background-color: #000;
    color: #f00;
    margin-top: 20px;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #f00;
    color: #000;
    box-shadow: 0 0 15px #f00;
}

#echo-chamber {
    margin-top: 30px;
    height: 100px;
    position: relative;
}

.echo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    animation: fadeOut 5s forwards;
    font-size: 1.2em;
    color: #aaa;
}

.anger-image {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: anger-animation 2s forwards;
    z-index: 9999;
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translate(-50%, 0) scale(1);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -100px) scale(1.5);
    }
}

@keyframes anger-animation {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2) rotate(10deg);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5) rotate(-10deg);
    }
}