:root {
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --success-color: #28a745;
    --success-hover-color: #218838;
    --light-gray: #f0f0f0;
    --white: #ffffff;
    --dark-gray: #333333;
    --border-color: #cccccc;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    background-color: var(--light-gray);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

.container {
    text-align: center;
    background-color: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 15px var(--shadow-color);
    width: 100%;
    max-width: 500px;
}

h1 {
    color: var(--dark-gray);
    margin-top: 0;
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group-multiple {
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 15px;
    background-color: #f9f9f9;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--dark-gray);
}

input[type="text"],
input[type="color"],
input[type="file"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 14px;
}

input[type="color"] {
    height: 40px;
    padding: 5px;
}

input[type="checkbox"] {
    margin-right: 5px;
    vertical-align: middle;
}

#logoPreviewContainer {
    position: relative;
    display: inline-block;
    margin-top: 8px;
    line-height: 0;
    border-radius: 4px;
    overflow: hidden;
}

#logoPreview {
    display: block;
    width: 80px;
    height: 80px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    object-fit: contain;
}

#deleteLogoButton {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(40, 40, 40, 0.75);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
    padding: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

#logoPreviewContainer:hover #deleteLogoButton {
    opacity: 1;
}

button,
#downloadButton {
    display: inline-block;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    color: var(--white);
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease, opacity 0.3s ease;
    text-decoration: none;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

#generateButton {
    background-color: var(--primary-color);
    margin-bottom: 20px;
}

#generateButton:hover:not(:disabled) {
    background-color: var(--primary-hover-color);
}

#downloadButton {
    background-color: var(--success-color);
    margin-top: 20px;
}

#downloadButton:hover {
    background-color: var(--success-hover-color);
}

#qrcodeOutput {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100px;
}

#qrcodeOutput>* {
    border: 1px solid var(--border-color);
    border-radius: 5px;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-crisp-edges;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.hidden {
    display: none !important;
}