body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

.container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 800px;
    padding: 30px;
    margin: 40px 0;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.input-container {
    display: flex;
    margin-bottom: 30px;
}

input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    font-size: 16px;
}

#checkButton {
    background-color: #4285f4;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

#checkButton:hover {
    background-color: #3367d6;
}

#imagePreview {
    text-align: center;
    margin-top: 20px;
}

#previewImage {
    max-width: 100%;
    max-height: 400px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.download-options {
    margin-top: 20px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.download-btn {
    background-color: #0f9d58;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 0 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #0b8043;
}

#jpegButton {
    background-color: #db4437;
}

#jpegButton:hover {
    background-color: #c53929;
}

#errorMessage {
    color: #db4437;
    text-align: center;
    padding: 15px;
    background-color: #fbe9e7;
    border-radius: 4px;
    margin-top: 20px;
}

.hidden {
    display: none;
}