body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f0f0f0;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.status {
    margin: 20px 0;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 10px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

#startBtn {
    background-color: #28a745;
    color: white;
}

#stopBtn {
    background-color: #dc3545;
    color: white;
}

button:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

.custom-url {
    margin: 20px 0;
    display: flex;
    gap: 10px;
}

#urlInput {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

#setUrlBtn {
    background-color: #007bff;
    color: white;
}

#currentUrl {
    word-break: break-all;
    color: #666;
}

.settings {
    display: flex;
    gap: 10px;
    margin: 20px 0;
}

.default-urls, .threads {
    flex: 1;
}

#defaultUrls, #threadCount {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    background-color: white;
}