.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: 'Arial', sans-serif;
    color: #333;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

h1 {
    color: #2c3e50;
    margin: 0;
    font-size: 2rem;
}

.content-container {
    min-height: 400px;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    background-color: #fff;
}

.loading {
    text-align: center;
    padding: 50px 0;
    color: #7f8c8d;
    font-size: 1.2rem;
}

.content {
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.6;
    color: #444;
    font-size: 1rem;
}

.error {
    color: #e74c3c;
    text-align: center;
    padding: 50px 0;
    font-size: 1.2rem;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 15px;
    border-top: 1px solid #eee;
    color: #7f8c8d;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }
    h1 {
        font-size: 1.5rem;
    }
    .content-container {
        padding: 15px;
        min-height: 300px;
    }
}