body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    max-width: 500px;
    margin: 50px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.input-group {
    margin: 20px 0;
    display: flex;
    justify-content: center;
    gap: 10px;
}

input[type="url"] {
    padding: 10px;
    width: 70%;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.hidden {
    display: none;
}

#result {
    margin-top: 20px;
    text-align: left;
}

#result h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

#result p {
    margin: 10px 0;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: #3498db;
    animation: spin 1s linear infinite;
    margin: 20px auto;
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#error {
    color: #e74c3c;
}

#errorMsg {
    font-size: 16px;
    margin-bottom: 20px;
}