* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.left-panel, .right-panel {
    flex: 1;
    min-width: 300px;
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    font-size: 14px;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    min-height: 100px;
    resize: vertical;
}

.param-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.param-group {
    flex: 1;
    min-width: 120px;
}

input[type="number"],
select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

input[type="color"] {
    width: 100%;
    height: 34px;
    padding: 2px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

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

.preview-container {
    margin-top: 20px;
    text-align: center;
}

#qrcode-canvas {
    margin: 0 auto;
    max-width: 100%;
    border: 1px solid #eee;
}

#scanned-image {
    max-width: 100%;
    max-height: 300px;
    display: none;
    margin: 0 auto 15px;
    border: 1px solid #eee;
}

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 4px;
    word-break: break-all;
}

.error {
    color: #e74c3c;
}

.success {
    color: #27ae60;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .left-panel, .right-panel {
        width: 100%;
    }

    .param-group {
        min-width: calc(50% - 10px);
    }
}