:root {
    --label-width: 50mm;
    --label-height: 25mm;
    --gap: 0mm;

    /* Bootstrap 5 Variables mimic */
    --bs-blue: #0d6efd;
    --bs-indigo: #6610f2;
    --bs-purple: #6f42c1;
    --bs-pink: #d63384;
    --bs-red: #dc3545;
    --bs-orange: #fd7e14;
    --bs-yellow: #ffc107;
    --bs-green: #198754;
    --bs-teal: #20c997;
    --bs-cyan: #0dcaf0;
    --bs-gray: #6c757d;
    --bs-gray-dark: #343a40;
    --bs-primary: #0d6efd;
    --bs-secondary: #6c757d;
    --bs-success: #198754;
    --bs-info: #0dcaf0;
    --bs-warning: #ffc107;
    --bs-danger: #dc3545;
    --bs-light: #f8f9fa;
    --bs-dark: #212529;
    --bs-font-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --bs-body-font-family: var(--bs-font-sans-serif);
    --bs-body-font-size: 1rem;
    --bs-body-font-weight: 400;
    --bs-body-line-height: 1.5;
    --bs-body-color: #212529;
    --bs-body-bg: #fff;
    --bs-border-width: 1px;
    --bs-border-style: solid;
    --bs-border-color: #dee2e6;
    --bs-border-radius: 0.375rem;
    --bs-box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --bs-box-shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--bs-body-font-family);
    font-size: var(--bs-body-font-size);
    font-weight: var(--bs-body-font-weight);
    line-height: var(--bs-body-line-height);
    color: var(--bs-body-color);
    background-color: #f8f9fa;
    /* slightly darker background for app feel */
    margin: 0;
    padding: 0;
    height: 100vh;
}

/* Layout Containers */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar / Control Panel styling */
.control-panel {
    width: 400px;
    background: var(--bs-body-bg);
    padding: 1.5rem;
    box-shadow: var(--bs-box-shadow-sm);
    overflow-y: auto;
    flex-shrink: 0;
    z-index: 10;
    border-right: 1px solid var(--bs-border-color);
}

.control-panel h1 {
    font-size: 1.5rem;
    margin-top: 0;
    color: var(--bs-body-color);
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bs-primary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

/* Preview Area styling */
.preview-area {
    flex-grow: 1;
    background-color: #e9ecef;
    /* bs-gray-200 */
    padding: 3rem;
    overflow-y: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Form Styling (Bootstrap-ish) */
.form-group {
    margin-bottom: 1rem;
}

.form-group.row {
    display: flex;
    gap: 1rem;
}

.form-group.row>div {
    flex: 1;
}

label {
    display: inline-block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--bs-body-color);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
input[type="file"] {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    background-clip: padding-box;
    border: var(--bs-border-width) solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    appearance: none;
    /* Remove default browser styles especially for selects */
}

/* Restore Select Arrow (since appearance:none removed it) */
select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
}

input:focus,
select:focus {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    border-color: #86b7fe;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, .25);
}

small {
    font-size: 0.875em;
    color: var(--bs-secondary);
}

/* Buttons */
button {
    display: inline-block;
    width: 100%;
    font-weight: 400;
    line-height: 1.5;
    color: #fff;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    background-color: var(--bs-primary);
    border: 1px solid var(--bs-primary);
    padding: 0.5rem 0.75rem;
    /* padding 2 (standard) */
    font-size: 1rem;
    border-radius: var(--bs-border-radius);
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    margin-bottom: 0.75rem;
}

button:hover {
    background-color: #0b5ed7;
    /* darker shade */
    border-color: #0a58ca;
}

button.secondary {
    background-color: var(--bs-secondary);
    border-color: var(--bs-secondary);
    color: #fff;
}

button.secondary:hover {
    background-color: #5c636a;
    border-color: #565e64;
}

/* Links */
a {
    color: var(--bs-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Label Sheet Layout (Simulated Paper) */
.label-sheet {
    display: flex;
    flex-wrap: wrap;
    /* Calculated width based on label width + gaps */
    width: calc((var(--label-width) * 2) + var(--gap));
    margin: 0 auto;
    background: white;
    box-shadow: var(--bs-box-shadow);
    padding: 0;
    min-height: 297mm;
    /* approximate A4 height visual */
    align-content: flex-start;
}

/* Individual Label Styling */
.label {
    width: var(--label-width);
    height: var(--label-height);
    box-sizing: border-box;
    /* Use a light border for preview, remove for print if needed, but usually helpful to see bounds */
    border: 1px dotted #dee2e6;
    padding: 2px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    page-break-inside: avoid;
    font-family: Arial, sans-serif;
    /* Setup specific font for labels if needed, or keep inherited */
    color: black;
}

.label .company-name {
    font-weight: bold;
    font-size: 10px;
    /* Adjusted size */
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    max-width: 100%;
}

.label .product-name {
    font-size: 9px;
    margin: 1px 0;
    white-space: nowrap;
    overflow: hidden;
    max-width: 100%;
}

.label .price-row {
    display: flex;
    justify-content: space-between;
    /* spread out mrp and rate */
    width: 90%;
    font-size: 9px;
    font-weight: bold;
}

.label svg.barcode-svg {
    /* Limit width to ensure it fits */
    width: 90% !important;
    height: auto !important;
    max-height: 12mm;
    margin: 1px 0;
    display: block;
}

/* Handle JsBarcode's auto-generated SVG sizing */
.label svg.barcode-svg rect {
    fill: black;
}

.label .barcode-val {
    font-size: 8px;
    margin-top: 0;
}


/* --- PRINT STYLES --- */
@media print {

    /* Reset body/page */
    @page {
        size: auto;
        margin: 0mm;
    }

    body {
        margin: 0;
        padding: 0;
        background-color: white;
        height: auto;
        display: block;
        /* Ensure it's not flex like app-container */
    }

    .app-container {
        display: block;
        height: auto;
        overflow: visible;
    }

    /* Hide UI elements */
    .no-print,
    .control-panel {
        display: none !important;
    }

    /* Adjust Preview Area for Print */
    .preview-area {
        display: block !important;
        padding: 0 !important;
        background: white !important;
        overflow: visible !important;
        margin: 0 !important;
        width: 100% !important;
    }

    .label-sheet {
        box-shadow: none;
        margin: 0;
        width: 100%;
        /* Or strict width if needed */
    }

    /* Ensure labels float/flow correctly */
    .label {
        border: none;
        /* Optional: hide border on actual print */
        float: left;
        /* Fallback for some print engines */
        page-break-inside: avoid;
    }
}