```css
/* static/style.css */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}
.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 1000px;
}
h1, h2 {
    text-align: center;
    color: #1a237e;
}
.main-content {
    display: flex;
    gap: 30px;
}
.controls, .result-area {
    flex: 1;
}
textarea, input[type="file"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
button, .button {
    width: 100%;
    padding: 12px;
    border: none;
    background-color: #3949ab;
    color: white;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}
button:hover, .button:hover {
    background-color: #1a237e;
}
#logo-display {
    border: 2px dashed #ccc;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 15px;
    background-color: #fafafa;
}
#result-image {
    max-width: 100%;
    max-height: 100%;
}
.hidden {
    display: none !important;
}
#action-buttons {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}
#error-message {
    color: red;
    text-align: center;
    margin-top: 15px;
}