body {
    font-family: sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background-color: #f8f8f8;
    color: #333;
}

.app-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

.drag-drop-zone {
    border: 2px dashed #aaa;
    width: 100%;
    height: 120px;
    text-align: center;
    line-height: 120px;
    margin-bottom: 20px;
    background-color: #fff;
    border-radius: 8px;
    cursor: pointer;
}

.ctrl0 {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 5px;
}

.error-message {
    color: red;
    text-align: center;
    font-weight: bold;
}

.image-info {
    text-align: center;
}

.form-group {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
}

.input-decorated {
    min-width: auto;
    padding: 4px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.coordinate-group {
    display: flex;
    gap: 10px;
}

.output-field {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background-color: #fff;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.preview-canvas {
    display: block;
    margin: 20px 0;
    border: 1px solid #ccc;
    border-radius: 8px;
    max-width: 100%;
}

.base64-textarea {
    width: 100%;
    height: 50px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background-color: #fff;
    resize: vertical;
    overflow: auto;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.button-group {
    display: flex;
    gap: 10px;
}

.action-button {
    padding: 8px 16px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.action-button:hover {
    background-color: #0056b3;
}

.action-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

select.input-decorated {
    appearance: none;
    background: url('data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB2aWV3Qm94PSIwIDAgNC41IDMiPjxwYXRoIGZpbGw9IiM1NTUiIGQ9Ik0uMjI1IDBoMy45NUwxLjUgMi4yNS4yMjUgMHoiLz48L3N2Zz4=') no-repeat right 10px center / 8px 10px;
    padding-right: 30px;
}