* {
    box-sizing: border-box;
}

.omni-qr-wrapper {
    background-color: #eeeeee;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #222222;
    padding: 20px;
    border-radius: 8px;
    max-width: 100%;
    margin: 0 auto;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.omni-qr-header {
    background-color: #eeeeee;
    padding: 15px;
    text-align: center;
    margin-bottom: 25px;
    border-bottom: 2px solid #dddddd;
}

.omni-qr-header h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #222222;
}

.omni-qr-container {
    display: block;
}

/* Fallback/Table Layout style behavior using custom block wrapping */
.omni-qr-control-panel, .omni-qr-preview-panel {
    width: 100%;
    display: block;
    margin-bottom: 25px;
}

@media (min-width: 768px) {
    .omni-qr-container {
        display: table;
        width: 100%;
        table-layout: fixed;
    }
    .omni-qr-control-panel {
        display: table-cell;
        width: 60%;
        padding-right: 30px;
        vertical-align: top;
    }
    .omni-qr-preview-panel {
        display: table-cell;
        width: 40%;
        vertical-align: top;
        text-align: center;
    }
}

.omni-qr-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.omni-qr-select, .omni-qr-input, .omni-qr-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #cccccc;
    border-radius: 4px;
    background-color: #ffffff;
    font-size: 14px;
    color: #222222;
    margin-bottom: 15px;
}

.omni-qr-select:focus, .omni-qr-input:focus, .omni-qr-textarea:focus {
    border-color: #00d2ff;
    outline: none;
}

.omni-qr-field-group {
    margin-bottom: 12px;
}

.omni-qr-field-group label {
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
    font-weight: 500;
}

.omni-qr-customization {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #dddddd;
}

.omni-qr-subheading {
    font-size: 16px;
    margin: 0 0 15px 0;
    font-weight: 700;
}

.omni-qr-field-group input[type="color"] {
    border: none;
    width: 50px;
    height: 35px;
    padding: 0;
    background: none;
    cursor: pointer;
}

.omni-qr-box {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 6px;
    display: inline-block;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

#omni-qr-canvas img, #omni-qr-canvas canvas {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

.omni-qr-btn {
    display: block;
    width: 100%;
    background-color: #00d2ff;
    color: #222222;
    border: none;
    padding: 14px;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.omni-qr-btn:hover {
    background-color: #00b8e6;
}