.options-unavailable-banner {
            background: #fef2f2;
            border: 1px solid #fecaca;
            color: #7f1d1d;
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 14px;
            line-height: 1.4;
            margin: 0 0 14px 0;
        }

        [data-tpms-combined-options][hidden] {
            display: none !important;
        }

        /* Professional Timeline Design System */
        .product-options-davis {
            --timeline-x: 0.5rem;
            --timeline-node-size: 0.625rem;
            --timeline-half-node: calc(var(--timeline-node-size) / 2);
            --timeline-horizontal-gap: 0.75rem;
            --cta-step-size: 1.5rem; /* Square format 1:1 */
            --category-line-color: #111827;
            --category-line-gap: 1.25rem;
            --cta-badge-reserve: 5.75rem;
            margin: 1.5rem 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", 'Inter', sans-serif;
            position: relative;
            padding-bottom: 0;
        }

        /* Timeline removed */
        .product-options-davis::before {
            content: none;
        }

        /* Category wrapper with professional colored timeline */
        .category-section-wrapper {
            position: relative;
            margin-bottom: 1.8rem;
            padding-left: 12px; /* Space for the colored border */
            --category-number-text: #ffffff;
        }

        .category-section-wrapper::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 2px;
            height: 100%;
            background: var(--category-line-color, #64748b);
        }

        .category-section-wrapper::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 2px;
            height: 40px;
            background: linear-gradient(to bottom, var(--category-line-color, #64748b) 0%, rgba(255, 255, 255, 0) 100%);
        }

        /*
         * COLOR SCHEME SELECTOR - Uncomment ONE block below
         * ================================================
         */

        /* OPTION: Google Material (Active) */
        .category-section-wrapper[data-category="vehicle_setup"],
        .category-section-wrapper[data-category="tpms_sensors"] {
            --category-line-color: #4285F4;
            --category-number-bg: #4285F4;
            --category-number-text: #ffffff;
        }

        .category-section-wrapper[data-category="head_unit_model"],
        .category-section-wrapper[data-category="product_spec"],
        .category-section-wrapper[data-category="installation"] {
            --category-line-color: #34A853;
            --category-number-bg: #34A853;
            --category-number-text: #ffffff;
        }

        .category-section-wrapper[data-category="camera_options"],
        .category-section-wrapper[data-category="safety_addon"],
        .category-section-wrapper[data-category="notes"],
        .category-section-wrapper[data-category="customer_input"] {
            --category-line-color: #FBBC05;
            --category-number-bg: #FBBC05;
            --category-number-text: #ffffff;
        }

        .category-section-wrapper[data-category="accessories"],
        .category-section-wrapper[data-category="comfort_addon"] {
            --category-line-color: #EA4335;
            --category-number-bg: #EA4335;
            --category-number-text: #ffffff;
        }

        /* OPTION: CLAUDE OPTIMIZED (Commented) - Conversion-focused progressive colors
        .category-section-wrapper[data-category="vehicle_setup"] {
            --category-line-color: #2563eb;
            --category-number-bg: #2563eb;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="head_unit_model"],
        .category-section-wrapper[data-category="product_spec"] {
            --category-line-color: #059669;
            --category-number-bg: #059669;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="camera_options"],
        .category-section-wrapper[data-category="safety_addon"] {
            --category-line-color: #ea580c;
            --category-number-bg: #ea580c;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="accessories"],
        .category-section-wrapper[data-category="comfort_addon"] {
            --category-line-color: #991b1b;
            --category-number-bg: #991b1b;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="tpms_sensors"] {
            --category-line-color: #64748b;
            --category-number-bg: #64748b;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="installation"] {
            --category-line-color: #0f172a;
            --category-number-bg: #0f172a;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="notes"],
        .category-section-wrapper[data-category="customer_input"] {
            --category-line-color: #475569;
            --category-number-bg: #475569;
            --category-number-text: #ffffff;
        }
        */

        /* OPTION 3: ORIGINAL RAINBOW (Commented) - Bright distinctive colors
        .category-section-wrapper[data-category="vehicle_setup"] {
            --category-line-color: #3b82f6;
            --category-number-bg: #3b82f6;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="head_unit_model"],
        .category-section-wrapper[data-category="product_spec"] {
            --category-line-color: #10b981;
            --category-number-bg: #10b981;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="camera_options"],
        .category-section-wrapper[data-category="safety_addon"] {
            --category-line-color: #8b5cf6;
            --category-number-bg: #8b5cf6;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="accessories"],
        .category-section-wrapper[data-category="comfort_addon"] {
            --category-line-color: #ef4444;
            --category-number-bg: #ef4444;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="tpms_sensors"] {
            --category-line-color: #f59e0b;
            --category-number-bg: #f59e0b;
            --category-number-text: #1f2937;
        }
        .category-section-wrapper[data-category="installation"] {
            --category-line-color: #1f2937;
            --category-number-bg: #1f2937;
            --category-number-text: #ffffff;
        }
        .category-section-wrapper[data-category="notes"],
        .category-section-wrapper[data-category="customer_input"] {
            --category-line-color: #64748b;
            --category-number-bg: #64748b;
            --category-number-text: #ffffff;
        }
        */

        /* Clean Category Container */
        .options-category {
            background: transparent;
            border: none;
            margin-bottom: 0;
            overflow: visible;
            position: relative;
            padding: 0;
        }

        /* Remove old border styling from options-category */
        .options-category::before,
        .options-category::after {
            display: none;
        }

        /* Legacy class support for backwards compatibility */
        .options-category--vehicle_setup,
        .options-category--head_unit_model,
        .options-category--camera_options,
        .options-category--accessories,
        .options-category--tpms_sensors,
        .options-category--installation,
        .options-category--notes {
            /* Keep classes for JS targeting but remove color definitions */
        }

        .options-category__header {
            display: none; /* Remove container headers */
        }

        .options-category__summary {
            font-size: 0.6875rem;
            font-weight: 400;
            color: #fff;
            opacity: 0.8;
            white-space: nowrap;
            max-width: 55%;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .options-category__content {
            background: transparent;
            padding: 0.6rem 0.45rem 0.6rem 0.2rem;
        }

        .options-category__content > .option-group:last-of-type {
            margin-bottom: 0;
        }

        /* Option Groups */
        .option-group {
            margin-bottom: 0.6rem;
            position: relative;
            /* Removed padding-left - no longer needed without nested border */
        }

        .option-group::before {
            /* Removed nested vertical border - only keep category-level border */
            display: none;
        }

        .option-group-inner {
            transition: none;
        }

        .options-category__content > .option-group:nth-of-type(1)::before {
            --group-line-color: color-mix(in srgb, var(--category-line-color, #0f172a) 35%, #ffffff 65%);
        }

        .options-category__content > .option-group:nth-of-type(2)::before {
            --group-line-color: color-mix(in srgb, var(--category-line-color, #0f172a) 55%, #ffffff 45%);
        }

        .options-category__content > .option-group:nth-of-type(3)::before {
            --group-line-color: color-mix(in srgb, var(--category-line-color, #0f172a) 70%, #ffffff 30%);
        }

        .options-category__content > .option-group:nth-of-type(4)::before {
            --group-line-color: color-mix(in srgb, var(--category-line-color, #0f172a) 85%, #ffffff 15%);
        }

        .options-category__content > .option-group:nth-of-type(n+5)::before {
            --group-line-color: var(--category-line-color, #0f172a);
        }

        @supports not (background: color-mix(in srgb, #000 50%, #fff 50%)) {
            .options-category__content > .option-group:nth-of-type(1)::before {
                --group-line-color: var(--category-line-color, #0f172a);
                opacity: 0.45;
            }

            .options-category__content > .option-group:nth-of-type(2)::before {
                --group-line-color: var(--category-line-color, #0f172a);
                opacity: 0.6;
            }

            .options-category__content > .option-group:nth-of-type(3)::before {
                --group-line-color: var(--category-line-color, #0f172a);
                opacity: 0.75;
            }

            .options-category__content > .option-group:nth-of-type(4)::before {
                --group-line-color: var(--category-line-color, #0f172a);
                opacity: 0.9;
            }

            .options-category__content > .option-group:nth-of-type(n+5)::before {
                --group-line-color: var(--category-line-color, #0f172a);
                opacity: 1;
            }
        }


        .option-header {
            margin-bottom: 0; /* Remove extra gap above option list */
            border-bottom: 1px solid #e5e7eb; /* ORIGINAL BORDER RESTORED */
            padding-bottom: 0.3rem; /* tightened */
        }

	        .option-title {
	            font-size: 0.8125rem;
	            font-weight: 600;
	            color: #111827;
	            text-transform: uppercase;
	            letter-spacing: 0.05em;
	            margin: 0;
	            display: inline-flex;
	            align-items: center;
	            gap: 0.5rem;
	        }

	        /* Required marker: show only when the category requirement is active (e.g. always-required categories). */
	        .options-category[data-requirement-active="1"] .option-group[data-required="1"] .option-title::after {
	            content: " *";
	            color: #dc2626;
	            font-weight: 700;
	        }

        /* Professional Required Badge */
        .option-required-badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.55rem;
            font-size: 0.625rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            background: #f9fafb;
            color: #4b5563;
            border-radius: 3px;
            white-space: nowrap;
            position: absolute;
            right: 0.65rem;
            top: 50%;
            transform: translateY(-50%);
        }

        /* Aligned CTA Step Headers */
        .option-cta {
            position: relative;
            display: block;
            font-size: 0.9rem;
            color: #111827;
            margin-top: 0.7rem;
            margin-bottom: 0.45rem;
            margin-left: 0;
            font-weight: 500;
            line-height: 1.35;
            padding: 0.45rem 0.65rem;
            padding-right: 0.75rem;
            padding-left: calc(0.65rem + var(--cta-step-size) + 0.4rem);
            letter-spacing: -0.01em;
            background: linear-gradient(90deg, #f9fafb 0%, rgba(249, 250, 251, 0) 80%);
        }

        .option-cta::after {
            content: '';
            display: block;
            clear: both;
        }

        .option-cta__spacer {
            float: right;
            width: var(--cta-badge-reserve, 5.75rem);
            height: calc(var(--cta-step-size) + 0.35rem);
        }

        .option-cta__text {
            display: block;
            overflow-wrap: anywhere;
            max-width: 100%;
        }

        /* Hover effect removed per request */

        .option-cta [data-category-required-badge] {
            /* Styles moved to .option-required-badge */
        }

        /* Step Number with Category Color */
        .option-cta::before {
            content: attr(data-step);
            position: absolute;
            left: 0.65rem;
            top: 0.45rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: var(--cta-step-size);
            height: var(--cta-step-size);
            background: var(--category-number-bg, #111827);
            color: var(--category-number-text, #ffffff);
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .product-options-davis,
        .product-options-davis * {
            font-family: var(--font-sans, 'Inter', ui-sans-serif, system-ui, sans-serif);
        }

	        .option-description {
	            display: none; /* Hide descriptions for cleaner look */
	        }

	        .option-group[data-display-type="content"] .option-description {
	            display: block !important;
	            margin-top: 0.5rem;
	            font-size: 0.9rem;
	            line-height: 1.5;
	            color: #4b5563;
	        }

        .option-description-inline {
            margin-top: 0.5rem;
            font-size: 0.9rem;
            line-height: 1.5;
            color: #4b5563;
        }

        .option-description-inline a:not(.option-link-badge),
        .option-description-inline button.option-scroll-link {
            color: #1d4ed8;
            text-decoration: underline;
            font-weight: 500;
            cursor: pointer;
        }

        .option-description-inline button.option-scroll-link {
            background: none;
            border: none;
            padding: 0;
        }

        .option-description-inline a:not(.option-link-badge):hover,
        .option-description-inline button.option-scroll-link:hover {
            color: #1e40af;
        }

	        .option-description-inline .option-inline-note {
	            display: inline-block;
	            font-size: 0.8rem;
	            color: #6b7280;
	            margin-left: 0.25rem;
	        }

	        .option-readmore {
	            margin-top: 0.25rem;
	        }

	        .option-readmore__summary {
	            list-style: none;
	            cursor: pointer;
	            display: inline-flex;
	            align-items: center;
	            gap: 0.35rem;
	            color: #1d4ed8;
	            text-decoration: underline;
	            font-weight: 500;
	            font-size: 0.9rem;
	            user-select: none;
	        }

	        .option-readmore__summary::-webkit-details-marker {
	            display: none;
	        }

	        .option-readmore__summary:focus-visible {
	            outline: 2px solid rgba(37, 99, 235, 0.45);
	            outline-offset: 2px;
	            border-radius: 4px;
	        }

	        .option-readmore__less {
	            display: none;
	        }

	        .option-readmore[open] .option-readmore__more {
	            display: none;
	        }

	        .option-readmore[open] .option-readmore__less {
	            display: inline;
	        }

	        .option-readmore__content {
	            margin-top: 0.5rem;
	        }

        .option-amplifier-tooltip {
            margin-top: 0.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .option-amplifier-tooltip .option-info-trigger {
            display: inline-flex !important;
            align-items: center;
            gap: 0.4rem;
        }

        .option-info-trigger--amplifier {
            border: 1px dashed rgba(15, 23, 42, 0.35);
            background: rgba(15, 23, 42, 0.03);
            color: #0f172a;
            border-radius: 9999px;
            padding: 0.25rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
        }

        .option-info-trigger--amplifier:hover,
        .option-info-trigger--amplifier:focus-visible {
            border-color: #0ea5e9;
            background: rgba(14, 165, 233, 0.08);
            color: #0f172a;
        }

        .option-info-trigger--title {
            display: inline-flex !important;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            margin-left: 0.5rem;
            padding: 0.15rem 0.5rem;
            border: none;
            background: transparent;
            color: #0f172a;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .option-info-trigger--title .option-info-icon {
            width: 1.1rem;
            height: 1.1rem;
            border: 1px solid rgba(15, 23, 42, 0.35);
            background: rgba(15, 23, 42, 0.05);
            color: #0f172a;
            font-size: 0.7rem;
        }

        .option-info-trigger--title:hover .option-info-icon,
        .option-info-trigger--title:focus-visible .option-info-icon {
            border-color: #0ea5e9;
            background: rgba(14, 165, 233, 0.12);
        }

        .option-link-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.15rem 0.65rem;
            border-radius: 9999px;
            border: 1px solid transparent;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
            text-decoration: none !important;
            line-height: 1.4;
            cursor: pointer;
            font-family: inherit;
        }

        .option-link-badge--primary {
            background: rgba(29, 78, 216, 0.12);
            color: #1d4ed8;
            border-color: rgba(29, 78, 216, 0.25);
        }

        .option-link-badge--primary:hover {
            background: rgba(29, 78, 216, 0.2);
            color: #1e40af;
            border-color: rgba(29, 78, 216, 0.35);
        }

        .option-link-badge--ghost {
            background: rgba(15, 23, 42, 0.04);
            color: #0f172a;
            border-color: rgba(15, 23, 42, 0.15);
        }

        .option-link-badge--ghost:hover {
            background: rgba(15, 23, 42, 0.08);
        }

        .product-options__category-intro {
            display: none;
        }

        /* Modern Pill Style Options */
        .small-cards-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .small-card {
            position: relative;
            background: #f9fafb;
            border: 1px solid #e5e7eb;
            padding: 0.75rem 1rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.15s ease;
            min-width: 120px;
        }

        .small-card-body {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            height: 100%;
            padding: 0.25rem 0; /* Adds breathing room above and below content */
        }

        .small-card-subtitle {
            display: none; /* Hide subtitles for cleaner look */
        }

        .small-card-price-secondary {
            font-size: 0.75rem;
            color: #6b7280;
        }

        .small-card:hover {
            background: #ffffff;
            transform: translateY(-1px);
        }

        .small-card.selected {
            background: var(--category-line-color, #111827);
            color: #fff;
            border-color: var(--category-line-color, #111827);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .small-card:focus-within {
            outline: 2px solid #3b82f6;
            outline-offset: 2px;
        }

        .small-card.selected .small-card-title,
        .small-card.selected .small-card-price {
            color: #fff;
        }

        .small-card input {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .small-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0.5rem;
        }

        .small-card-title {
            font-weight: 500;
            color: #111827;
            font-size: 0.9375rem;
        }

        .small-card-price {
            font-weight: 500;
            color: #111827;
            font-size: 0.875rem;
        }

        .small-card-badge {
            display: none; /* Remove badges for minimal look */
        }

        .small-card-features {
            font-size: 0.75rem;
            color: #6b7280;
            line-height: 1.4;
            margin-top: 0.5rem;
        }

        .small-card-check {
            display: none !important; /* Remove checkmarks for cleaner look */
        }

        .small-card.selected .small-card-check {
            display: none !important;
        }

        /* Hide info buttons for cleaner look */
        .option-info-trigger {
            display: none !important;
        }

        .ram-details {
            margin-top: 0.625rem;
            padding: 0.625rem;
            background: #f9fafb;
            border-radius: 4px;
            display: none;
        }

        .ram-details.show {
            display: block;
        }

        .ram-details-text {
            font-size: 0.875rem;
            color: #4b5563;
            line-height: 1.6;
        }

        /* Clean List without Box */
        .list-panel {
            background: transparent;
            border: none;
            overflow: visible;
        }

        .list-panel-item {
            position: relative;
            padding: 0;
            border-bottom: 1px solid #e5e7eb; /* Border kept as original */
            cursor: pointer;
            transition: all 0.15s ease;
        }

        .list-panel-item:last-child {
            border-bottom: none;
        }

        .list-panel-item:hover {
            background: rgba(0, 0, 0, 0.02);
        }

        .list-panel-item.is-option-disabled {
            cursor: not-allowed;
            opacity: 0.48;
        }

        .list-panel-item.is-option-disabled:hover {
            background: transparent;
        }

        .list-panel-item.selected {
            font-weight: 500;
            border-left: 3px solid var(--category-line-color, #111827);
            padding-left: 2px;
            background: var(--category-line-color-light, rgba(17, 24, 39, 0.02));
        }

        .product-options-davis .installation-choice-option.selected,
        .product-options-davis .installation-location-option.selected,
        .product-options-davis .installation-date-option.selected,
        .product-options-davis .installer-labour-option.selected {
            border-left: 0 !important;
            padding-left: 0 !important;
        }

        .option-group:not(.compact-notes-section) .list-panel-item:focus-within {
            outline: 2px solid #3b82f6;
            outline-offset: -2px;
        }

        .product-options-davis .installation-date-option:focus,
        .product-options-davis .installation-date-option:focus-visible,
        .product-options-davis .installation-date-option:focus-within {
            outline: 0 !important;
            box-shadow: none !important;
        }

        .list-panel-item input[type="radio"],
        .list-panel-item input[type="checkbox"] {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .list-panel-content {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.5rem 0.75rem; /* Even vertical spacing with gentle horizontal breathing room */
        }

        .list-panel-radio {
            position: relative;
            width: 1.125rem;
            height: 1.125rem;
            border: 2px solid #d1d5db;
            border-radius: 50%;
            background: white;
            flex-shrink: 0;
            transition: all 0.15s;
        }

        .list-panel-item.selected > .list-panel-content > .list-panel-radio {
            border-color: var(--category-line-color, #111827);
        }

        .list-panel-item.selected > .list-panel-content > .list-panel-radio::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 0.5rem;
            height: 0.5rem;
            background: var(--category-line-color, #111827);
            border-radius: 50%;
        }

        .list-panel-badge {
            display: inline-block;
            padding: 0.125rem 0.5rem;
            background: #f3f4f6;
            color: #374151;
            font-size: 0.6875rem;
            font-weight: 600;
            border-radius: 4px;
            margin-left: 0rem;
        }

        .price-delta {
            display: inline-block;
            min-width: 5.5rem;
            text-align: right;
            white-space: nowrap;
            font-variant-numeric: tabular-nums;
            font-feature-settings: 'tnum' 1;
        }

        .price-delta.is-text {
            min-width: auto;
            text-align: left;
        }

        .bundle-discount-banner {
            display: none;
            margin-top: 0.75rem;
            padding: 0.75rem 1rem;
            border-radius: 4px;
            background: #ecfdf5;
            border: 1px solid #34d399;
            color: #065f46;
            font-size: 0.8125rem;
            font-weight: 500;
            align-items: center;
            gap: 0.5rem;
        }

        .bundle-discount-banner.is-active {
            display: flex;
        }

        .bundle-discount-summary {
            display: none;
            margin-top: 0.5rem;
            margin-left: var(--category-line-gap, 1.25rem);
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            background: var(--category-cta-bg, rgba(17, 24, 39, 0.06));
            color: var(--category-line-color, #111827);
            font-size: 0.8125rem;
            font-weight: 500;
            align-items: center;
            gap: 0.4rem;
        }

        .bundle-discount-summary.is-active {
            display: inline-flex;
        }

        .bundle-discount-summary__icon {
            font-size: 0.85rem;
            color: currentColor;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .option-cta-subtext {
            display: none;
            font-size: 0.8125rem;
            color: #047857;
            margin: 0.25rem 0 0 calc(var(--category-line-gap) + var(--cta-step-size) + 0.75rem);
        }

        .option-cta-subtext span {
            font-weight: 600;
        }

        .option-cta-subtext.is-active {
            display: block;
        }

        .date-picker-group {
            margin-top: 1rem;
            border: 0;
            border-radius: 0;
            background: transparent;
            padding: 0;
        }

        .date-picker-group .list-panel-sublabel {
            margin-bottom: 0.5rem;
        }

        .installation-date-input {
            width: 100%;
            border: 1px solid #d1d5db;
            border-radius: 4px;
            padding: 0.6rem 0.75rem;
            font-size: 0.9375rem;
            color: #0f172a;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .installation-date-input:focus {
            outline: none;
            border-color: #111827;
            box-shadow: 0 0 0 2px rgba(17, 24, 39, 0.08);
        }

        .installation-date-input:disabled {
            background: #f3f4f6;
            color: #9ca3af;
        }

        .list-panel-checkbox {
            width: 1.125rem;
            height: 1.125rem;
            border: 2px solid #d1d5db;
            border-radius: 3px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: white;
            transition: all 0.15s ease;
        }

        .list-panel-item.selected > .list-panel-content > .list-panel-checkbox {
            background: var(--category-line-color, #111827);
            border-color: var(--category-line-color, #111827);
        }

        .list-panel-item.selected > .list-panel-content > .list-panel-checkbox::after {
            content: '✓';
            color: white;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .list-panel-details {
            flex: 1;
        }

        .list-panel-header {
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            align-items: center;
            column-gap: 0.75rem;
        }

        .list-panel-title {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            min-width: 0;
            font-weight: 500;
            color: #111827;
            font-size: 0.875rem;
        }

        .list-panel-title .product-options__item-label {
            display: block;
            min-width: 0;
            white-space: normal;
            overflow: visible;
            word-break: break-word;
            line-height: 1.4;
        }

        .list-panel-meta {
            display: inline-flex;
            align-items: center;
            justify-content: flex-end;
            gap: 0.5rem;
            min-width: 5.25rem;
            text-align: right;
        }

        .list-panel-price {
            font-weight: 500;
            color: #111827;
            font-size: 0.875rem;
            white-space: nowrap;
            line-height: 1;
        }

        .list-panel-more {
            flex-shrink: 0;
        }

        .list-panel-price-secondary {
            display: block;
            font-size: 0.8rem;
            color: #6b7280;
            margin-top: 0.15rem;
        }

        .list-panel-title .product-options__item-label.tpms-include-copy--compact,
        .list-panel-price.tpms-include-copy--compact {
            display: none;
        }

        @media (max-width: 640px) {
            .list-panel-title .product-options__item-label.tpms-include-copy--full,
            .list-panel-price.tpms-include-copy--full {
                display: none;
            }

            .list-panel-title .product-options__item-label.tpms-include-copy--compact,
            .list-panel-price.tpms-include-copy--compact {
                display: inline;
            }
        }

        .list-panel-description {
            font-size: 0.8125rem;
            color: #6b7280;
            margin-top: 0.25rem;
            line-height: 1.4;
        }

        .list-panel-expand {
            margin-top: 0.75rem;
            padding: 0.75rem;
            background: #f9fafb;
            border-radius: 4px;
            font-size: 0.8125rem;
            color: #4b5563;
            line-height: 1.45;
            display: none;
        }

        .list-panel-item.expanded .list-panel-expand {
            display: block;
        }

        /* Factory Display - Style 2 Compact Thumbnails */
        .factory-display-grid {
            display: grid;
            gap: 0 1rem;
            margin-top: 0.75rem;
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }

        @media (max-width: 600px) {
            .factory-display-grid {
                grid-template-columns: repeat(3, minmax(0, 1fr));
                gap: 0 0.75rem;
            }
        }

        .factory-display-option {
            position: relative;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            text-align: center;
            transition: transform 0.28s ease, box-shadow 0.28s ease;
            will-change: transform, box-shadow;
        }

        .factory-display-option input[type="radio"] {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .factory-display-image-wrapper {
            position: relative;
            width: 100%;
            overflow: visible;
            border-radius: 12px;
            transition: box-shadow 0.28s ease;
        }

        .factory-display-image {
            width: 100%;
            aspect-ratio: 1;
            border-radius: 12px;
            border: none;
            transition: filter 0.28s ease, opacity 0.28s ease;
            object-fit: cover;
            position: relative;
            filter: saturate(1) brightness(1);
            opacity: 1;
        }

        .factory-display-option:hover .factory-display-image {
            filter: saturate(1) brightness(1);
            opacity: 1;
        }

        .factory-display-option:has(input[type="radio"]:checked) .factory-display-image-wrapper,
        .factory-display-option.selected .factory-display-image-wrapper {
            box-shadow:
                0 0 0 2px #ffffff,
                0 0 0 4px var(--category-line-color, #2563eb),
                0 6px 18px rgba(15, 23, 42, 0.18);
        }

        .factory-display-option input[type="radio"]:checked ~ .factory-display-image-wrapper .factory-display-image,
        .factory-display-option.selected .factory-display-image {
            filter: saturate(1) brightness(1);
            opacity: 1;
        }

        .factory-display-option:has(input[type="radio"]:checked):hover .factory-display-image-wrapper,
        .factory-display-option.selected:hover .factory-display-image-wrapper {
            box-shadow:
                0 0 0 2px #ffffff,
                0 0 0 4px var(--category-line-color, #2563eb),
                0 10px 22px rgba(15, 23, 42, 0.2);
        }

        .factory-display-option input[type="radio"]:checked:hover ~ .factory-display-image-wrapper .factory-display-image,
        .factory-display-option.selected:hover .factory-display-image {
            filter: saturate(1) brightness(1);
            opacity: 1;
        }

        /* Checkmark overlay for selected state */
        .factory-display-image-wrapper::after {
            content: '✓';
            position: absolute;
            top: -6px;
            right: -6px;
            width: 28px;
            height: 28px;
            background: var(--category-line-color, #2563eb);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: bold;
            opacity: 0;
            transform: scale(0);
            transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            z-index: 10;
            pointer-events: none;
        }

        .factory-display-option:has(input[type="radio"]:checked) .factory-display-image-wrapper::after,
        .factory-display-option.selected .factory-display-image-wrapper::after {
            opacity: 1;
            transform: scale(1);
        }

        #product-options-container img.premium-image {
            display: block;
            position: relative;
            z-index: 1;
            transition: opacity 0.35s ease;
            will-change: opacity;
        }

        #product-options-container img.premium-image:not(.premium-image--loaded) {
            opacity: 0;
        }

        #product-options-container .premium-image-skeleton {
            position: absolute;
            inset: 0;
            border-radius: inherit;
            pointer-events: none;
            background: linear-gradient(120deg, rgba(255, 255, 255, 0.97) 0%, rgba(248, 250, 252, 0.6) 50%, rgba(255, 255, 255, 0.97) 100%);
            background-size: 220% 220%;
            animation: premium-image-shimmer 1.35s ease-in-out infinite;
            transition: opacity 0.4s ease;
            z-index: 0;
        }

        #product-options-container .premium-image-parent--loaded .premium-image-skeleton {
            opacity: 0;
            animation: none;
        }

        .factory-display-image-wrapper .premium-image-skeleton {
            border-radius: 8px;
        }

        .option-info-media .premium-image-skeleton {
            border-radius: 4px;
        }

        @media (prefers-reduced-motion: reduce) {
            #product-options-container .premium-image-skeleton {
                animation: none;
            }
        }

        @media (hover: hover) and (pointer: fine) {
            .factory-display-grid:has(input[type="radio"]:checked) .factory-display-option:not(:has(input:checked)) .factory-display-image {
                filter: saturate(0.8) brightness(0.95);
                opacity: 0.7;
                transform: scale(0.95);
            }

            .factory-display-grid:has(input[type="radio"]:checked) .factory-display-option:not(:has(input:checked)):hover .factory-display-image {
                filter: saturate(0.95) brightness(0.99);
                opacity: 0.85;
                transform: scale(0.98);
            }
        }

        .factory-display-price {
            position: absolute;
            right: 0.45rem;
            bottom: 0.45rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.18rem 0.45rem;
            background: rgba(15, 23, 42, 0.72);
            color: #ffffff;
            font-size: 0.68rem;
            font-weight: 600;
            border-radius: 5px;
            letter-spacing: 0.02em;
            z-index: 3;
        }

        .factory-display-price:empty {
            display: none;
        }

        .factory-display-check {
            display: none !important;
            position: absolute;
            top: -0.5rem;
            right: -0.5rem;
            width: 1.5rem;
            height: 1.5rem;
            background: #111827;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
        }

        .factory-display-check svg {
            width: 1rem;
            height: 1rem;
            color: white;
        }

        .factory-display-label {
            position: static;
            margin-top: 0.75rem;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
            align-items: center;
            background: transparent;
            color: #0f172a;
            border-radius: 0;
            font-size: 0.85rem;
            font-weight: 600;
            text-align: center;
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transition: color 0.2s ease;
        }

        .factory-display-label::after {
            display: none;
        }

        .factory-display-name {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .factory-display-subtitle {
            display: block;
            font-size: 0.72rem;
            font-weight: 500;
            color: #4b5563;
            letter-spacing: 0.02em;
        }

        .factory-display-option:hover .factory-display-label,
        .factory-display-option.selected .factory-display-label,
        .factory-display-option input[type="radio"]:checked ~ .factory-display-label {
            color: var(--category-line-color, #2563eb);
        }

        .factory-display-option:hover .factory-display-subtitle,
        .factory-display-option.selected .factory-display-subtitle,
        .factory-display-option input[type="radio"]:checked ~ .factory-display-label .factory-display-subtitle {
            color: rgba(37, 99, 235, 0.7);
        }

        .factory-display-selection {
            margin: 1rem 0 0;
            font-size: 0.75rem;
            color: #475569;
        }

        .factory-display-selection__value {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.55rem;
            margin-left: 0.5rem;
            font-size: 0.625rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            background: #f9fafb;
            color: #4b5563;
            border-radius: 3px;
        }

        .factory-display-description {
            margin: 0.25rem 0 0.5rem;
            font-size: 0.8rem;
            color: #4b5563;
        }

        /* Compact Single-Line Notes Section */
        .notes-section {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0;
        }

        .notes-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: #111827;
            flex-shrink: 0;
        }

        .notes-support {
            display: none !important; /* Hide in compact mode */
        }

        .notes-guidelines {
            display: none !important; /* Hide in compact mode */
        }

        .notes-textarea {
            display: none; /* Hide textarea, use input instead */
        }

        .notes-input {
            flex: 1;
            padding: 0.375rem 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: 4px;
            font-size: 0.875rem;
            font-family: inherit;
            color: #111827;
            background-color: #ffffff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .notes-input:focus {
            outline: none;
            border-color: var(--category-line-color, #2563eb);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
        }

        /* Compact Single-Line File Upload Section */
        .file-upload-section {
            margin-top: 0;
        }

        .file-upload-area {
            position: relative;
        }

        .file-input-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        /* Hide old dropzone style */
        .file-upload-dropzone {
            display: none;
        }

        /* New compact upload line */
        .file-upload-compact {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem 0;
            cursor: pointer;
        }

        .file-upload-compact:hover {
            background: rgba(0, 0, 0, 0.01);
        }

        .file-upload-icon {
            width: 1.25rem;
            height: 1.25rem;
            color: #6b7280;
            flex-shrink: 0;
        }

        .file-upload-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: #111827;
            flex: 1;
        }

        .file-upload-count {
            font-size: 0.75rem;
            color: #6b7280;
            padding: 0.125rem 0.5rem;
            background: #f3f4f6;
            border-radius: 9999px;
        }

        /* Cart-style uploaded images display */
        .uploaded-photos-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
        }

        .uploaded-photo-item {
            position: relative;
            width: 6rem;
            height: 6rem;
        }

        @media (min-width: 640px) {
            .uploaded-photo-item {
                width: 8rem;
                height: 8rem;
            }
        }

        .uploaded-photo-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0.5rem;
            border: 1px solid #e5e7eb;
        }

        .uploaded-photo-remove {
            position: absolute;
            top: -0.5rem;
            right: -0.5rem;
            width: 1.5rem;
            height: 1.5rem;
            background: #ef4444;
            color: white;
            border-radius: 9999px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 0.75rem;
            border: 2px solid white;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .uploaded-photo-remove:hover {
            background: #dc2626;
        }

        .file-upload-text {
            display: none;
        }

        /* Compact Upload Section Styles */
        .compact-upload-section .list-panel-item {
            border-top: 1px solid #e5e7eb;
        }

        .compact-option-row {
            padding: 0.75rem 1rem;
            min-height: 48px;
        }

        .compact-upload-wrapper {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .compact-upload-icon {
            width: 1.25rem;
            height: 1.25rem;
            color: #6b7280;
            flex-shrink: 0;
        }

        .compact-upload-label {
            font-size: 0.875rem;
            font-weight: 500;
            color: #374151;
            flex-shrink: 0;
        }

        .compact-upload-input {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        .compact-upload-button {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.75rem;
            background: #f3f4f6;
            border: 1px solid #d1d5db;
            border-radius: 0.375rem;
            font-size: 0.813rem;
            color: #374151;
            cursor: pointer;
            transition: all 0.2s;
        }

        .compact-upload-button:hover {
            background: #e5e7eb;
            border-color: #9ca3af;
        }

        .compact-upload-hint {
            font-size: 0.813rem;
            color: #6b7280;
            margin-left: auto;
        }

        .compact-upload-status {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.813rem;
            color: #6b7280;
        }

        .compact-upload-success {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.813rem;
            color: #059669;
        }

        /* Compact Photo Summary */
        .compact-photo-summary {
            margin-top: 0.75rem;
            padding: 0 1rem 0.75rem;
        }

        .compact-photo-summary-header {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.813rem;
            font-weight: 600;
            color: #0ea5e9;
        }

        .compact-photo-summary-check {
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .compact-photo-summary-label {
            color: #374151;
            font-weight: 500;
        }

        .compact-photo-summary-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.5rem;
            margin-left: 1.5rem;
        }

        .compact-photo-thumb-wrapper {
            position: relative;
            width: 60px;
            height: 60px;
            border-radius: 0.375rem;
            overflow: hidden;
            border: 1px solid #e5e7eb;
            flex-shrink: 0;
            background: #f9fafb;
        }

        .compact-photo-thumb {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .compact-photo-remove {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 20px;
            height: 20px;
            border-radius: 9999px;
            background: rgba(17, 24, 39, 0.85);
            color: white;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 0.75rem;
            line-height: 1;
            box-shadow: 0 1px 3px rgba(0,0,0,0.2);
            padding: 0;
        }

        .compact-photo-remove:hover {
            background: rgba(30, 64, 175, 0.9);
        }

        .compact-photo-play-icon {
            position: absolute;
            bottom: 4px;
            right: 4px;
            background: rgba(0,0,0,0.65);
            color: white;
            font-size: 0.625rem;
            padding: 2px 4px;
            border-radius: 9999px;
        }


        /* Compact Notes Section Styles */
        .compact-notes-section .list-panel-item {
            border-top: 1px solid #e5e7eb;
            padding: 0.75rem 1rem;
            min-height: 48px;
        }

        .compact-notes-wrapper {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            width: 100%;
        }

        .compact-notes-label {
            font-size: 0.875rem;
            font-weight: 500;
            color: #374151;
            flex-shrink: 0;
        }

        .compact-notes-input {
            flex: 1;
            padding: 0.375rem 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: 0.375rem;
            font-size: 0.875rem;
            font-family: inherit;
            color: #111827;
            background-color: #ffffff;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .compact-notes-input::placeholder {
            color: #9ca3af;
        }

        .compact-notes-input:focus {
            outline: none;
            border-color: #2563eb;
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
        }

        .compact-notes-section.option-group--invalid .compact-notes-label {
            color: #655544;
        }

        .compact-notes-section.option-group--invalid .compact-notes-input {
            border-color: #d2bca4;
            box-shadow: 0 0 0 2px rgba(121, 93, 65, 0.12);
        }

        .file-upload-primary {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            color: #111827;
            margin-bottom: 0.25rem;
        }

        .file-upload-secondary {
            font-size: 0.75rem;
            color: #6b7280;
        }

        .file-upload-spinner {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #3b82f6;
            font-weight: 600;
        }

        .file-preview-grid {
            margin-top: 1rem;
        }

        .file-preview-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
            gap: 0.75rem;
        }

        .photo-preview-item {
            position: relative;
            aspect-ratio: 1;
            border-radius: 0.5rem;
            overflow: hidden;
            background: #f3f4f6;
            border: 1px solid #e5e7eb;
        }

        .photo-preview-item img,
        .photo-preview-item video {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .remove-preview-btn {
            position: absolute;
            top: 0.25rem;
            right: 0.25rem;
            width: 1.5rem;
            height: 1.5rem;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: background 0.15s;
        }

        .remove-preview-btn:hover {
            background: rgba(0, 0, 0, 0.9);
        }

        .file-upload-status {
            margin-top: 1rem;
        }

        .upload-progress {
            margin-top: 0.5rem;
        }

        .upload-progress-bar {
            height: 6px;
            background: #e5e7eb;
            border-radius: 999px;
            overflow: hidden;
        }

        .upload-progress-bar span {
            display: block;
            height: 100%;
            width: 0%;
            background: #2563eb;
            transition: width 0.2s ease;
        }

        .upload-progress-text {
            margin-top: 0.25rem;
            font-size: 0.75rem;
            color: #374151;
        }

        .file-upload-success {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem;
            background: #f0fdf4;
            border: 1px solid #86efac;
            border-radius: 0.5rem;
            color: #166534;
            font-size: 0.8125rem;
        }

        .file-status-icon {
            width: 1.25rem;
            height: 1.25rem;
            color: #16a34a;
        }


        /* Installation Configuration within List Panel */
        .installation-config {
            display: grid;
            grid-template-rows: 0fr;
            opacity: 0;
            visibility: hidden;
            margin-top: 0;
            padding-top: 0;
            border-top: 0;
            background: transparent;
        }

        .installation-config.is-open {
            grid-template-rows: 1fr;
            opacity: 1;
            visibility: visible;
            margin-top: 1.25rem;
        }

        .installation-config__inner {
            overflow: hidden;
            min-height: 0;
        }

        .list-panel-divider {
            height: 1px;
            background: #e5e7eb;
            margin: 0;
        }

        .list-panel-subitem {
            padding: 1rem 1.25rem;
            background: white;
        }

        .list-panel-sublabel {
            font-size: 0.8125rem;
            font-weight: 600;
            color: #374151;
            margin-bottom: 0.75rem;
        }

        .installation-date-input {
            width: 100%;
            padding: 0.625rem 0.75rem;
            border: 1px solid #e5e7eb;
            border-radius: 0.5rem;
            font-size: 0.8125rem;
            color: #111827;
            background: white;
            transition: border-color 0.15s, box-shadow 0.15s;
        }

        .installation-date-input:focus {
            outline: none;
            border-color: #111827;
            box-shadow: 0 0 0 2px rgba(17, 24, 39, 0.08);
        }

        .installation-date-hint {
            margin-top: 0.5rem;
            font-size: 0.75rem;
            color: #6b7280;
        }

        .installation-date-display {
            font-size: 0.8125rem;
            color: #111827;
        }

        .installation-date-display.is-placeholder {
            color: #9ca3af;
        }

        .installation-date-option {
            cursor: pointer;
            position: relative;
        }

        .installation-date-option.is-disabled {
            cursor: not-allowed;
        }

        .installation-date-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1.125rem;
            height: 1.125rem;
            color: #6b7280;
            flex-shrink: 0;
        }

        .installation-date-icon svg {
            width: 1rem;
            height: 1rem;
        }

        .installation-date-option .installation-date-input {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            cursor: pointer;
        }

        .installation-date-option.is-disabled .installation-date-input {
            pointer-events: none;
        }

        .installation-choice-option input[data-installation-choice-radio] {
            display: none;
        }

        .installation-choice-option input[name="installation"] {
            display: none;
        }

        .installation-location-option .list-panel-price {
            font-variant-numeric: tabular-nums;
        }

        .m-total-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            margin-top: 0.5rem;
            padding: 0.65rem 0.25rem 0.1rem;
            border-top: 2px solid #111827;
            font-size: 0.875rem;
            font-weight: 600;
            color: #111827;
        }

        .m-total-value {
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }

        .m-cal-wrap {
            display: none;
        }

        .m-cal-wrap.is-open {
            display: block;
        }

        .m-cal {
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            background: #fff;
            padding: 0.75rem;
            margin-top: 0.5rem;
            width: 100%;
            max-width: none;
            box-sizing: border-box;
        }

        .m-cal__head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }

        .m-cal__month {
            font-size: 0.8125rem;
            font-weight: 600;
            color: #111827;
        }

        .m-cal__nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1.75rem;
            height: 1.75rem;
            border: 1px solid #e5e7eb;
            border-radius: 6px;
            background: #fff;
            cursor: pointer;
            color: #374151;
            padding: 0;
        }

        .m-cal__nav svg {
            width: 0.875rem;
            height: 0.875rem;
        }

        .m-cal__nav:disabled {
            opacity: 0.35;
            cursor: not-allowed;
        }

        .m-cal__months {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 0.75rem;
        }

        .m-cal__month-panel {
            min-width: 0;
        }

        .m-cal__month-title {
            display: block;
            margin-bottom: 0.35rem;
            text-align: center;
            font-size: 0.75rem;
            font-weight: 600;
            color: #111827;
        }

        .m-cal__grid {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 4px;
        }

        .m-cal__dow {
            text-align: center;
            font-size: 0.65rem;
            font-weight: 600;
            color: #9ca3af;
            padding: 0.25rem 0;
            text-transform: uppercase;
        }

        .m-cal__day {
            border: none;
            background: none;
            border-radius: 6px;
            font: inherit;
            font-size: 0.75rem;
            color: #111827;
            min-height: 2.15rem;
            padding: 0.4rem 0;
            cursor: pointer;
        }

        .m-cal__day:hover:not(:disabled):not(.is-selected) {
            background: #f3f4f6;
        }

        .m-cal__day:disabled {
            color: #d1d5db;
            cursor: default;
            text-decoration: line-through;
            text-decoration-thickness: 1px;
        }

        .m-cal__day.is-selected {
            background: #34A853;
            color: #fff;
            font-weight: 600;
            text-decoration: none;
        }

        .m-cal__time {
            margin-top: 0.65rem;
            padding-top: 0.65rem;
            border-top: 1px solid #e5e7eb;
        }

        .m-cal__time-label {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: #9ca3af;
            margin-bottom: 0.45rem;
        }

        .m-cal__time-label svg {
            width: 0.8rem;
            height: 0.8rem;
        }

        .m-cal__slots {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .m-cal__slot {
            border: 1px solid #e5e7eb;
            background: #fff;
            border-radius: 6px;
            font: inherit;
            font-size: 0.72rem;
            color: #111827;
            min-width: 4.1rem;
            padding: 0.35rem 0.55rem;
            cursor: pointer;
        }

        .m-cal__slot:hover:not(.is-selected):not(:disabled) {
            background: #f3f4f6;
        }

        .m-cal__slot:disabled {
            color: #d1d5db;
            cursor: not-allowed;
            text-decoration: line-through;
        }

        .m-cal__slot.is-selected {
            background: #34A853;
            border-color: #34A853;
            color: #fff;
            font-weight: 600;
            text-decoration: none;
        }

        @media (max-width: 640px) {
            .m-cal__months {
                grid-template-columns: 1fr;
            }
        }

        .m-installer-note {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-top: 1.25rem;
            padding-top: 0.875rem;
            border-top: 1px solid #e5e7eb;
            font-size: 0.8125rem;
            color: #64748b;
        }

        .m-installer-note > svg {
            width: 1.05rem;
            height: 1.05rem;
            flex-shrink: 0;
            color: #64748b;
        }

        .m-apply-wrap {
            position: relative;
            margin-left: auto;
        }

        .m-apply-wrap a {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: #0f5132;
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 0.18rem;
            white-space: nowrap;
        }

        .m-apply-wrap a svg {
            width: 0.8rem;
            height: 0.8rem;
        }

        .m-apply-card {
            position: absolute;
            bottom: calc(100% + 0.55rem);
            right: 0;
            width: 17rem;
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            box-shadow: 0 10px 28px rgba(17, 24, 39, 0.14);
            padding: 0.75rem 0.875rem;
            font-size: 0.75rem;
            line-height: 1.5;
            color: #374151;
            opacity: 0;
            visibility: hidden;
            transform: translateY(4px);
            transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;
            pointer-events: none;
            z-index: 5;
        }

        .m-apply-wrap:hover .m-apply-card,
        .m-apply-wrap:focus-within .m-apply-card {
            opacity: 1;
            visibility: visible;
            transform: none;
            transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s;
        }

        .m-apply-card strong {
            display: block;
            color: #111827;
            margin-bottom: 0.25rem;
        }

        .m-apply-card__hint {
            display: block;
            margin-top: 0.35rem;
            color: #9ca3af;
        }

        .installation-config .option-group + .option-group {
            margin-top: 1.5rem;
        }

        .installation-config .list-panel {
            margin-top: 0;
        }

        .installation-config .list-panel-item:focus-within {
            outline: none;
            outline-offset: 0;
        }

        .installation-config .option-group .option-header {
            border-bottom: 1px solid #e5e7eb;
            padding-bottom: 0.5rem;
        }

        .installation-config .date-picker-group {
            margin-top: 0;
            padding: 0;
            border: 0;
            border-radius: 0;
            background: transparent;
        }

        .installation-config .installation-date-hint {
            margin-top: 0.5rem;
            font-size: 0.75rem;
            color: #6b7280;
        }

        .list-panel-toggle {
            font-size: 0.75rem;
            color: #2563eb;
            margin-left: 0rem;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
        }

        .list-panel-toggle:hover {
            text-decoration: underline;
        }

        .required-option-warning {
            margin-top: 0.5rem;
            font-size: 0.8125rem;
            color: #655544;
            background: #faf7f2;
            border: 1px solid #e3d7c8;
            border-left: none;
            padding: 0.5rem 0.75rem;
            border-radius: 8px;
        }

        .required-option-warning[data-hidden='true'] {
            display: none;
        }

        .option-group--invalid .option-header {
            border-color: #d2bca4;
            background: #fcfaf6;
            box-shadow: 0 0 0 2px rgba(121, 93, 65, 0.08);
        }

        .option-group--invalid .option-title {
            color: #3f2f22;
        }

        .radio-options,
        .checkbox-options {
            display: flex;
            flex-direction: column;
            gap: 0;
            padding: 0;
        }

        /* Legacy styles for installation location (still using old design) */
        .radio-option {
            position: relative;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1rem;
            background: #ffffff;
            border: 1.5px solid #e5e7eb;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.15s ease;
            min-height: 80px;
        }

        .radio-option:hover {
            border-color: #d1d5db;
        }

        .radio-option.selected {
            background: #f0f9ff;
            border-color: #111827;
        }

        .radio-option input[type="radio"] {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .radio-option .radio-indicator {
            width: 20px;
            height: 20px;
            border: 1px solid #d4d4d4;
            border-radius: 50%;
            margin-right: 1rem;
            margin-top: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            flex-shrink: 0;
        }

        .radio-option.selected .radio-indicator {
            border-color: #111827;
            background: #111827;
        }

        .radio-option.selected .radio-indicator::after {
            content: '';
            width: 8px;
            height: 8px;
            background: #fff;
            border-radius: 50%;
        }

        .radio-option-content {
            flex: 1;
        }

        .radio-option-label {
            font-weight: 600;
            color: #000;
            font-size: 0.9375rem;
            line-height: 1.3;
            margin-bottom: 0.375rem;
        }

        .radio-option-sublabel {
            font-size: 0.8125rem;
            color: #737373;
            margin-top: 0;
            line-height: 1.45;
        }

        /* Installation Section Styles */
        .installation-section {
            background: transparent;
            border-radius: 0;
            padding: 0;
            margin-top: 0;
            border: none;
        }

	        .installation-toggle {
	            /* Removed conflicting styles - inherits from .list-panel-item */
	        }

            .installer-labour-group {
                display: grid;
                grid-template-rows: 0fr;
                opacity: 0;
                visibility: hidden;
                margin-top: 0;
            }

            .installer-labour-group.is-open {
                grid-template-rows: 1fr;
                opacity: 1;
                visibility: visible;
                margin-top: 1.5rem;
            }

            .installer-labour-group__inner {
                overflow: hidden;
                min-height: 0;
            }

            .installer-labour-group .option-header {
                border-bottom: 1px solid #e5e7eb;
                padding-bottom: 0.5rem;
            }

            .installer-labour-group .option-title::after {
                content: none !important;
            }

            .installer-labour-group + .option-group {
                margin-top: 1.5rem;
            }

            .installer-labour-picker__hint {
                margin: 0.5rem 0 0;
                font-size: 0.75rem;
                line-height: 1.45;
                color: #64748b;
            }

            .installer-labour-picker__list {
                display: block;
                margin: 0;
            }

            .installer-labour-option {
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 0.75rem;
                min-width: 0;
                padding: 0.25rem 0;
                border: 0;
                border-top: 1px solid #e5e7eb;
                border-radius: 0;
                background: transparent;
                font-size: 0.875rem;
                position: relative;
            }

            .installer-labour-option.list-panel-item {
                border-bottom: 0;
            }

            .installer-labour-option.list-panel-item:last-child {
                border-bottom: 0;
            }

            .installer-labour-option .installer-labour-breakdown__choice {
                display: flex;
                align-items: center;
                gap: 0.5rem;
                min-width: 0;
            }

            .installer-labour-option .list-panel-checkbox {
                flex-shrink: 0;
            }

            .installer-labour-option.selected .list-panel-checkbox {
                background: var(--category-line-color, #111827);
                border-color: var(--category-line-color, #111827);
            }

            .installer-labour-option.selected .list-panel-checkbox::after {
                content: '✓';
                color: white;
                font-size: 0.75rem;
                font-weight: 700;
            }

            .installer-labour-option .product-options__item-label {
                min-width: 0;
            }

            .installer-labour-option.selected {
                padding-left: 0;
                border-left: 0;
                border-color: #e5e7eb;
                background: rgba(52, 168, 83, 0.08);
            }

            .installer-labour-option[hidden] {
                display: none !important;
            }

            .installer-labour-option[data-installer-service-available="0"] {
                cursor: not-allowed;
                opacity: 0.58;
                background: #f8fafc;
            }

            .installer-labour-option[data-installer-service-selectable="0"] {
                opacity: 1;
                background: transparent;
                border-color: #e2e8f0;
                flex-wrap: wrap;
            }

            .installer-labour-option[data-installer-service-selectable="0"] .list-panel-checkbox {
                border-color: #cbd5e1;
                background: #f8fafc;
            }

            .installer-labour-option[data-installer-service-selectable="0"] .product-options__item-label,
            .installer-labour-option[data-installer-service-selectable="0"] .installer-labour-option__copy {
                color: #64748b;
            }

            .installer-labour-option[data-installer-service-selectable="0"] .installer-labour-option__price {
                color: #64748b;
                font-weight: 600;
                white-space: nowrap;
                text-align: right;
            }

            .installer-labour-option__copy {
                display: none;
            }

            .installer-labour-option[data-installer-service-selectable="0"] .installer-labour-option__copy {
                display: block;
                order: 3;
                flex: 1 1 100%;
                margin: 0.15rem 0 0 1.75rem;
                font-size: 0.75rem;
                line-height: 1.35;
                color: #64748b;
            }

            .installer-labour-option__tooltip {
                position: absolute;
                right: 0;
                bottom: calc(100% + 0.45rem);
                z-index: 20;
                display: none;
                width: max-content;
                max-width: min(22rem, calc(100vw - 3rem));
                padding: 0.55rem 0.65rem;
                border-radius: 6px;
                background: #111827;
                color: #ffffff;
                font-size: 0.75rem;
                line-height: 1.35;
                font-weight: 500;
                box-shadow: 0 10px 25px rgba(17, 24, 39, 0.16);
                pointer-events: none;
                white-space: normal;
            }

            .installer-labour-option[data-installer-service-selectable="0"]:hover .installer-labour-option__tooltip,
            .installer-labour-option[data-installer-service-selectable="0"]:focus-within .installer-labour-option__tooltip {
                display: block;
            }

            .installer-labour-option__price {
                font-size: 0.8125rem;
                font-weight: 600;
                color: #111827;
                white-space: nowrap;
            }

            .installer-labour-picker__empty,
            .installer-labour-breakdown__empty {
                margin: 0.75rem 0 0;
                font-size: 0.8125rem;
                line-height: 1.45;
                color: #64748b;
            }

            .installer-application-note {
                margin: 0.75rem 0.75rem 0.875rem;
                padding: 0.875rem;
                border: 1px solid #d7e6df;
                border-radius: 8px;
                background: #f7fbf8;
                color: #1f2937;
            }

            .installer-application-note__title {
                margin: 0;
                font-size: 0.875rem;
                line-height: 1.35;
                font-weight: 600;
            }

            .installer-application-note__copy {
                margin: 0.25rem 0 0;
                font-size: 0.75rem;
                line-height: 1.45;
                color: #64748b;
            }

            .installer-application-note__link {
                display: inline-flex;
                align-items: center;
                margin-top: 0.5rem;
                color: #0f5132;
                font-size: 0.8125rem;
                font-weight: 600;
                text-decoration: underline;
                text-underline-offset: 0.18rem;
            }

            .installer-labour-breakdown {
                margin-top: 0.75rem;
                padding: 0.75rem;
                border: 1px solid #e5e7eb;
                border-radius: 8px;
                background: #f8fafc;
            }

            .installer-labour-breakdown__header,
            .installer-labour-breakdown__row {
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 0.75rem;
            }

            .installer-labour-breakdown__header {
                font-size: 0.8125rem;
                font-weight: 600;
                color: #111827;
                margin-bottom: 0.5rem;
            }

            .installer-labour-breakdown__list {
                list-style: none;
                padding: 0;
                margin: 0;
            }

            .installer-labour-breakdown__row {
                padding: 0.25rem 0;
                border-top: 1px solid #e5e7eb;
                font-size: 0.875rem;
            }

            .installer-labour-breakdown__row:first-child {
                border-top: none;
                padding-top: 0;
            }

            .installer-labour-breakdown__price {
                font-weight: 600;
                color: #111827;
                white-space: nowrap;
            }

            @media (max-width: 640px) {
                .installer-application-note {
                    margin: 0.75rem 0.625rem 0.75rem;
                    padding: 0.75rem;
                }

                .installer-labour-picker__list {
                    display: block;
                }
            }

	        .product-options-davis.options-anim-ready .installation-config,
	        .product-options-davis.options-anim-ready .installer-labour-group {
	            transition:
                grid-template-rows 0.42s cubic-bezier(0.33, 1, 0.68, 1),
                opacity 0.3s ease,
                margin-top 0.42s cubic-bezier(0.33, 1, 0.68, 1),
                visibility 0s linear 0.42s;
        }

        .product-options-davis.options-anim-ready .installation-config.is-open,
        .product-options-davis.options-anim-ready .installer-labour-group.is-open {
            transition:
                grid-template-rows 0.42s cubic-bezier(0.33, 1, 0.68, 1),
                opacity 0.32s ease 0.08s,
                margin-top 0.42s cubic-bezier(0.33, 1, 0.68, 1),
                visibility 0s;
        }

        @keyframes installation-price-flash {
            0% { background-color: rgba(52, 168, 83, 0.22); }
            100% { background-color: transparent; }
        }

        #installation-price.price-flash {
            animation: installation-price-flash 0.9s ease-out;
            border-radius: 4px;
        }

        .m-total-row.price-flash,
        .installer-labour-option.price-flash {
            animation: installation-price-flash 0.9s ease-out;
        }

        @media (prefers-reduced-motion: reduce) {
            .product-options-davis .installation-config,
            .product-options-davis .installer-labour-group {
                transition: none !important;
            }

            #installation-price.price-flash,
            .m-total-row.price-flash,
            .installer-labour-option.price-flash {
                animation: none;
            }
        }

        .date-picker-description {
            font-size: 0.8125rem;
            color: #737373;
            margin-bottom: 0.75rem;
            line-height: 1.45;
        }

        .date-picker-input {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1.5px solid #e5e5e5;
            border-radius: 8px;
            font-size: 0.875rem;
            transition: all 0.2s ease;
            background: #fff;
        }

        .date-picker-input:focus {
            outline: none;
            border-color: #000;
        }

        /* File Upload Card */
        .file-upload-card {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            border: 1px solid #e5e7eb;
            border-radius: 4px;
            background: #ffffff;
            padding: 1rem 1.25rem;
        }

        .file-upload-icon-wrap {
            flex-shrink: 0;
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 999px;
            background: #f3f4f6;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #2563eb;
        }

        .file-upload-content {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }

        .file-upload-title {
            font-size: 0.9375rem;
            font-weight: 600;
            color: #0f172a;
            margin: 0;
        }

        .file-upload-hint {
            font-size: 0.8125rem;
            color: #6b7280;
        }

        .file-upload-guidelines {
            margin: 0.5rem 0 0;
            padding-left: 1.25rem;
            color: #4b5563;
            font-size: 0.8125rem;
        }

        .file-upload-guidelines li {
            margin-bottom: 0.25rem;
        }

        .compact-upload-support {
            display: block;
            font-size: 0.8125rem;
            color: #4b5563;
            margin-top: 0.25rem;
        }

        .notes-guidelines {
            margin: 0.5rem 0 0;
            padding-left: 1.25rem;
            color: #4b5563;
            font-size: 0.8125rem;
        }

        .notes-guidelines li {
            margin-bottom: 0.25rem;
        }

        .file-upload-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .file-upload-trigger {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            border: 1px solid #111827;
            background: #111827;
            color: #ffffff;
            font-size: 0.875rem;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }

        .file-upload-trigger:hover {
            background: #1f2937;
            border-color: #1f2937;
        }

        .compact-upload-section.option-group--invalid .file-upload-trigger {
            border-color: #d2bca4;
            background: #6d5843;
        }

        .compact-upload-section.option-group--invalid .compact-upload-hint,
        .compact-upload-section.option-group--invalid [data-photo-hint] {
            color: #655544;
        }

        .file-upload-status-text {
            font-size: 0.8125rem;
            color: #6b7280;
        }

        .file-upload-input {
            display: none;
        }

        .photo-preview {
            display: none;
            margin-top: 0.75rem;
        }

        .photo-preview.show {
            display: block;
        }

        .photo-preview-list {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .photo-preview-item {
            width: 72px;
            height: 72px;
            border-radius: 6px;
            overflow: hidden;
            border: 1px solid #e5e7eb;
            position: relative;
        }

        .photo-preview-item img,
        .photo-preview-item video {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Unified Summary Section */
        /* Stop timeline before summary */
        .options-summary-title {
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #6b7280;
            margin-bottom: 0.75rem;
            margin-top: 0;
        }

        .options-summary {
            padding: 1.5rem 1.5rem 1.5rem 1.5rem;
            margin: 1.75rem 0 0 0;
            display: flex;
            flex-direction: column;
            gap: 0;
            width: 100%;
            background-color: #f9fafb;
            border-radius: 0.5rem;
        }

        .summary-figures {
            display: block;
            margin-bottom: 1.5rem;
        }

        .summary-figure {
            display: block;
        }

        .summary-figure--breakdown {
            margin-bottom: 1.5rem;
        }

        .price-original {
            text-decoration: line-through;
            color: #9ca3af;
            margin-right: 0.35rem;
            display: inline-block;
            font-size: 0.85em;
        }

        .price-discount {
            color: #047857;
            font-weight: 600;
        }

        .list-panel-badge--bundle {
            background: #dcfce7;
            color: #047857;
        }

        .summary-figure .summary-label {
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.025em;
            color: #18181b;
            line-height: 1;
            display: inline-block;
            margin-bottom: 0;
        }

        .summary-value {
            font-weight: 600;
            color: #18181b;
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
            font-feature-settings: 'tnum' 1;
        }

        .summary-value--options {
            font-size: 0.9375rem;
            display: block;
        }

        .summary-breakdown {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .summary-breakdown__item {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 1rem;
        }

        .summary-breakdown__label {
            font-size: 0.875rem;
            color: #71717a;
            font-weight: 400;
        }

        .summary-breakdown__value {
            font-size: 1rem;
            font-weight: 600;
            color: #18181b;
            font-variant-numeric: tabular-nums;
        }

        .summary-breakdown__item--discount .summary-breakdown__value {
            color: #dc2626;
        }

        .summary-breakdown__value [data-summary-options-sign],
        .summary-breakdown__value [data-summary-discount-sign] {
            font-weight: 600;
            color: #475569;
        }

        .summary-figure--total {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
        }

        .summary-value--total {
            font-size: 2rem;
            font-weight: 700;
            color: #047857;
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }

        .summary-actions {
            display: block;
        }

        .delivery-info-text {
            font-size: 0.8125rem;
            color: #52525b;
            margin: 0;
            padding: 0;
            line-height: 1.6;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }

        .delivery-info-text strong {
            color: #18181b;
            font-weight: 600;
        }

        .delivery-icon {
            width: 1.125rem;
            height: 1.125rem;
            flex-shrink: 0;
            color: #52525b;
            margin-top: 0.125rem;
        }

        .summary-actions > div {
            width: 100%;
        }

        .summary-actions .btn {
            display: block;
            width: 100%;
            margin: 0;
        }

        @media (max-width: 768px) {

            .options-summary {
                padding: 1rem 1rem 1rem 1rem;
                margin: 1rem 0 0 0;
            }

            .summary-value--total {
                font-size: 1.75rem;
            }

            .delivery-info-text {
                font-size: 0.75rem;
            }
        }

        @media (max-width: 640px) {
            .product-options-davis {
                --timeline-x: 0.25rem;
                --timeline-node-size: 0.5rem;
                --timeline-horizontal-gap: 0.85rem;
                --cta-step-size: 1.2rem;
                --category-line-gap: 1rem;
                --cta-badge-reserve: 5rem;
            }

            .product-options-davis::before {
                opacity: 0.5;
            }

            .options-category {
                border-left-width: 2px;
                padding: 0;
                margin-bottom: 0.85rem;
            }

            .options-category::after {
                height: 40px;
                background: linear-gradient(to bottom, var(--category-line-color) 0%, rgba(255, 255, 255, 1) 100%);
            }

            .options-category__content {
                padding: 0.45rem 0.35rem 0.5rem 0.2rem;
            }

            .option-group {
                margin-bottom: 0.4rem;
                /* Removed padding-left - no longer needed without nested border */
            }

            .option-group::before {
                /* Removed nested vertical border - only keep category-level border */
                display: none;
            }

            .option-header {
                padding-bottom: 0.25rem;
            }


                .option-cta {
                    font-size: 0.875rem;
                    margin-top: 0.35rem;
                    margin-bottom: 0.28rem;
                    padding: 0.35rem 0.5rem;
                    padding-right: 0.65rem;
                    padding-left: calc(0.5rem + var(--cta-step-size) + 0.35rem);
                }

            .radio-options,
            .checkbox-options {
                gap: 0;
            }

            .radio-option,
            .checkbox-option {
                padding: 0.875rem 1rem;
            }

            .option-required-badge {
                font-size: 0.6875rem;
            }
        }

        @media (max-width: 375px) {
            .summary-figures {
                flex-wrap: wrap;
                gap: 0.5rem;
            }

            .summary-divider {
                display: none;
            }

            .summary-figure {
                flex: 1 1 100%;
            }
        }

        /* Image hover overlay */
        .radio-option img {
            position: relative;
        }

        .radio-option > div:first-child {
            position: relative;
        }

        .radio-option img:hover::after {
            content: '+';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 32px;
            height: 32px;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 300;
            pointer-events: none;
        }

        .image-hover-wrapper {
            position: relative;
            display: inline-block;
            flex-shrink: 0;
            width: 72px;
            height: 72px;
        }

        .image-hover-wrapper img {
            pointer-events: none;
            width: 72px !important;
            height: 72px !important;
            min-width: 72px !important;
            min-height: 72px !important;
        }

        .image-zoom-trigger {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 36px;
            height: 36px;
            background: rgba(0, 0, 0, 0.6);
            color: white;
            border-radius: 50%;
            cursor: pointer;
            opacity: 0;
            transition: opacity 0.2s ease;
            z-index: 10;
            display: grid;
            place-items: center;
            font-size: 24px;
            font-family: monospace;
        }

        .image-hover-wrapper:hover .image-zoom-trigger {
            opacity: 1;
        }

        .image-zoom-trigger:hover {
            background: rgba(0, 0, 0, 0.8);
        }

        .option-info-trigger {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.35rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: #1d4ed8;
            background: rgba(59, 130, 246, 0.08);
            border: 1px solid rgba(59, 130, 246, 0.18);
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .option-info-trigger:hover {
            background: rgba(59, 130, 246, 0.12);
            border-color: rgba(37, 99, 235, 0.35);
            color: #1e40af;
        }

        .option-info-trigger:focus-visible {
            outline: 2px solid rgba(37, 99, 235, 0.6);
            outline-offset: 2px;
        }

        .option-info-trigger--inline {
            margin-top: 0.5rem;
            background: transparent;
            border-color: transparent;
            color: #2563eb;
            padding-left: 0;
        }

        .option-info-trigger--inline:hover {
            background: rgba(59, 130, 246, 0.08);
            border-color: rgba(59, 130, 246, 0.25);
        }

        .option-info-icon {
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
            background: #2563eb;
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.65rem;
            font-weight: 700;
            line-height: 1;
        }

        .option-info-content {
            display: none;
        }

        .option-info-text {
            font-size: 0.85rem;
            line-height: 1.6;
            color: #374151;
            margin: 0 0 0.75rem;
        }

        .option-info-text:last-child {
            margin-bottom: 0;
        }

        .option-info-list {
            margin: 0;
            padding: 0 0 0 1.1rem;
            font-size: 0.85rem;
            line-height: 1.45;
            color: #374151;
        }

        .option-info-media {
            margin-top: 1rem;
            border: 1px solid #e5e7eb;
            border-radius: 4px;
            overflow: hidden;
            position: relative;
            background: none;
        }

        .option-info-media img {
            display: block;
            width: 100%;
            height: auto;
            background-color: #e2e8f0;
            position: relative;
            z-index: 1;
        }

        .option-overlay {
            position: fixed;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            padding: 1.5rem;
        }

        .option-overlay.is-open {
            display: flex;
        }

        .option-overlay__backdrop {
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(2px);
        }

        .option-overlay__panel {
            position: relative;
            background: #ffffff;
            border-radius: 6px;
            padding: 1.5rem;
            max-width: min(540px, 90vw);
            max-height: min(80vh, 640px);
            width: 100%;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            box-shadow: 0 24px 50px rgba(15, 23, 42, 0.25);
            overflow-y: auto;
        }

        .option-overlay__title {
            font-size: 1rem;
            font-weight: 600;
            color: #0f172a;
            margin: 0;
        }

        .option-overlay__body {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            font-size: 0.85rem;
            color: #1f2937;
        }

        .option-overlay__close {
            position: absolute;
            top: 0.75rem;
            right: 0.75rem;
            width: 2rem;
            height: 2rem;
            border-radius: 4px;
            border: none;
            background: rgba(148, 163, 184, 0.25);
            color: #1f2937;
            display: grid;
            place-items: center;
            cursor: pointer;
            transition: background 0.2s ease;
            font-size: 1.2rem;
            line-height: 1;
        }

        .option-overlay__close:hover {
            background: rgba(148, 163, 184, 0.4);
        }

        .sammy-support-cta {
            margin-top: 1rem;
        }

        .sammy-support-text {
            font-size: 0.85rem;
            color: #4b5563;
            margin: 0;
        }

        .sammy-support-text a {
            color: #1f2937;
            font-weight: 500;
            text-decoration: underline;
        }

        .sammy-support-text a:hover {
            color: #2563eb;
        }

        .factory-display-option {
            position: relative;
        }

        /* ZOOM BUTTON - Hidden for Magnetic Focus concept */
        .factory-display-zoom {
            display: none !important;
            position: absolute;
            top: 0.5rem;
            right: 0.5rem;
            width: 1.8rem;
            height: 1.8rem;
            border-radius: 999px;
            border: none;
            background: rgba(15, 23, 42, 0.65);
            color: #ffffff;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .factory-display-zoom:hover {
            background: rgba(15, 23, 42, 0.8);
        }

        .factory-display-option:hover .factory-display-zoom {
            display: none !important;
        }

        @media (max-width: 768px) {
            .factory-display-zoom {
                display: none !important;
            }
        }

        body.option-overlay-open {
            overflow: hidden;
        }

        /* ========================================
           Custom Select Dropdown - Modern Tailwind Design
           ======================================== */

        .custom-select-wrapper {
            position: relative;
            width: 100%;
        }

        .custom-select-trigger {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 0.75rem 1rem;
            background: white;
            border: 2px solid #e5e7eb;
            border-radius: 0.5rem;
            font-size: 0.9375rem;
            font-weight: 500;
            color: #111827;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: left;
        }

        .custom-select-trigger:hover {
            border-color: #d1d5db;
            box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
        }

        .custom-select-trigger:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .custom-select-trigger[aria-expanded="true"] {
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .custom-select-value {
            flex: 1;
            color: #6b7280;
        }

        .custom-select-trigger[data-has-selection="true"] .custom-select-value {
            color: #111827;
        }

        .custom-select-icon {
            width: 1.25rem;
            height: 1.25rem;
            color: #6b7280;
            transition: transform 0.2s ease;
            flex-shrink: 0;
            margin-left: 0.5rem;
        }

        .custom-select-trigger[aria-expanded="true"] .custom-select-icon {
            transform: rotate(180deg);
        }

        .custom-select-dropdown {
            position: absolute;
            top: calc(100% + 0.25rem);
            left: 0;
            right: 0;
            background: white;
            border: none;
            border-radius: 0.5rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            z-index: 50;
            max-height: 20rem;
            overflow-y: auto;
            animation: dropdown-fade-in 0.15s ease;
        }

        @keyframes dropdown-fade-in {
            from {
                opacity: 0;
                transform: translateY(-0.5rem);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .custom-select-dropdown[hidden] {
            display: none;
        }

        .custom-select-options {
            list-style: none;
            padding: 0.25rem;
            margin: 0;
        }

        .custom-select-option {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0.875rem;
            border-radius: 0.375rem;
            cursor: pointer;
            transition: all 0.15s ease;
            gap: 0.75rem;
        }

        .custom-select-option:hover,
        .custom-select-option:focus {
            background: #f3f4f6;
            outline: none;
        }

        .custom-select-option[data-selected="true"] {
            background: #eff6ff;
            color: #1e40af;
        }

        .custom-select-option[data-selected="true"]:hover {
            background: #dbeafe;
        }

        .custom-select-option-text {
            flex: 1;
            font-size: 0.875rem;
            font-weight: 500;
            color: #111827;
        }

        .custom-select-option[data-selected="true"] .custom-select-option-text {
            color: #1e40af;
            font-weight: 600;
        }

        .custom-select-option-price {
            font-size: 0.875rem;
            font-weight: 600;
            color: #6b7280;
            white-space: nowrap;
        }

        .custom-select-option[data-selected="true"] .custom-select-option-price {
            color: #1e40af;
        }

        /* Scrollbar Styling */
        .custom-select-dropdown::-webkit-scrollbar {
            width: 0.5rem;
        }

        .custom-select-dropdown::-webkit-scrollbar-track {
            background: #f3f4f6;
            border-radius: 0.25rem;
        }

        .custom-select-dropdown::-webkit-scrollbar-thumb {
            background: #d1d5db;
            border-radius: 0.25rem;
        }

        .custom-select-dropdown::-webkit-scrollbar-thumb:hover {
            background: #9ca3af;
        }

        /* Mobile Responsive */
        @media (max-width: 640px) {
            .custom-select-trigger {
                padding: 0.625rem 0.875rem;
                font-size: 0.875rem;
            }

            .custom-select-option {
                padding: 0.625rem 0.75rem;
            }

            .custom-select-dropdown {
                max-height: 16rem;
            }
        }

        /* Required Field Indicator */
        .custom-select-wrapper[data-required="true"] .custom-select-trigger {
            border-color: #fbbf24;
        }

        .custom-select-wrapper[data-required="true"] .custom-select-trigger:hover {
            border-color: #f59e0b;
        }

        /* Error State */
        .custom-select-wrapper.error .custom-select-trigger {
            border-color: #ef4444;
        }

        .custom-select-wrapper.error .custom-select-trigger:hover {
            border-color: #dc2626;
        }

        /* Simple Product Summary (no options) */
        .simple-product-summary {
            padding: 1.5rem 1.5rem 1.5rem 1.5rem;
            margin: 1.75rem 0 0 0;
            background-color: #f9fafb;
            border-radius: 0.5rem;
        }

        .simple-product-actions {
            display: block;
        }

        .simple-product-actions > div {
            width: 100%;
        }

        /* Delivery Info Block - separate section with same styling */
        .delivery-info-block {
            padding: 1.5rem 1.5rem 1.5rem 1.5rem;
            margin: 1rem 0 0 0;
            background-color: #f9fafb;
            border-radius: 0.5rem;
            font-family: Poppins, sans-serif;
        }

        /* Price Breakdown - Option 2 Style */
        .price-breakdown {
            margin-bottom: 1.5rem;
        }

        .price-row {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 0.5rem;
            font-size: 0.9375rem;
        }

        .price-row:last-child {
            margin-bottom: 0;
        }

        .price-row-total {
            padding-top: 1rem;
            border-top: 1px solid #e5e5e5;
            font-size: 1rem;
            font-weight: 600;
            margin-top: 1rem;
        }

        .price-label {
            color: #52525b;
        }

        .price-value {
            color: #18181b;
            font-weight: 500;
        }

        .price-value-positive {
            color: #16a34a;
        }

        .price-value-negative {
            color: #dc2626;
        }

        .price-row-total .price-label,
        .price-row-total .price-value {
            color: #18181b;
            font-size: 1.125rem;
        }

        /* Security Badges Section - Option 5 Style */
        .security-badges {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 1rem;
            font-size: 0.6875rem;
            color: #6b7280;
        }

        .security-badge {
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        .security-icon {
            width: 16px;
            height: 16px;
        }

        .options-restore-snackbar {
            position: fixed;
            bottom: 20px;
            right: 24px;
            left: auto;
            top: auto;
            display: flex;
            flex-direction: column;
            gap: 0.875rem;
            max-width: 420px;
            width: min(420px, calc(100% - 3rem));
            padding: 1rem 1.25rem;
            border-radius: 0.75rem;
            background: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #f8fafc;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
            opacity: 0;
            transform: translateY(10px);
            pointer-events: none;
            transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 9999;
            box-sizing: border-box;
        }

        .options-restore-snackbar--visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .options-restore-snackbar__header {
            display: flex;
            align-items: flex-start;
            gap: 0.875rem;
            width: 100%;
        }

        .options-restore-snackbar__timer {
            margin-left: auto;
            font-size: 0.75rem;
            font-weight: 600;
            color: rgba(248, 250, 252, 0.75);
            letter-spacing: 0.04em;
            font-variant-numeric: tabular-nums;
            font-feature-settings: 'tnum' 1;
            display: inline-flex;
            min-width: 3.25rem;
            justify-content: flex-end;
        }

        .options-restore-snackbar__timer--warning {
            color: #fbbf24;
        }

        .options-restore-snackbar__timer--danger {
            color: #f87171;
        }

        .options-restore-snackbar__icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            color: #ffffff;
            display: grid;
            place-items: center;
            flex-shrink: 0;
        }

        .options-restore-snackbar__content {
            flex: 1;
            min-width: 0;
        }

        .options-restore-snackbar__title {
            font-weight: 600;
            font-size: 0.9375rem;
            color: #ffffff;
            margin: 0 0 0.375rem 0;
            line-height: 1.3;
        }

        .options-restore-snackbar__text {
            margin: 0;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.4;
        }

        .options-restore-snackbar__actions {
            display: flex;
            gap: 0.5rem;
            width: 100%;
            margin-top: 0.25rem;
        }

        .options-restore-snackbar__reset {
            border: none;
            background: rgba(239, 68, 68, 0.15);
            color: #fca5a5;
            cursor: pointer;
            font-size: 0.8125rem;
            font-weight: 600;
            line-height: 1;
            padding: 0.5rem 0.875rem;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .options-restore-snackbar__reset:hover {
            background: rgba(239, 68, 68, 0.25);
            color: #fee2e2;
            transform: translateY(-1px);
        }

        .options-restore-snackbar__close {
            border: none;
            background: rgba(255, 255, 255, 0.15);
            color: #ffffff;
            cursor: pointer;
            font-size: 0.8125rem;
            font-weight: 600;
            line-height: 1;
            padding: 0.5rem 0.875rem;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
        }

        .options-restore-snackbar__close:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
        }

        [data-restored-highlight] {
            position: relative;
        }

        [data-restored-highlight]::after {
            content: attr(data-restored-highlight-message);
            position: absolute;
            top: -0.5rem;
            right: 0.5rem;
            background: #16a34a;
            color: #ffffff;
            font-size: 0.6875rem;
            font-weight: 600;
            padding: 0.25rem 0.625rem;
            border-radius: 999px;
            opacity: 0;
            transform: translateY(-6px);
            animation: restored-pill-pop 0.35s ease forwards;
        }

        @keyframes restored-pill-pop {
            0% {
                opacity: 0;
                transform: translateY(-6px);
            }
            60% {
                opacity: 1;
                transform: translateY(0);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 768px) {
            .options-restore-snackbar {
                bottom: 12px;
                right: 12px;
                left: 12px;
                width: auto;
                max-width: none;
                padding: 0.875rem 1rem;
                gap: 0.75rem;
            }

            .options-restore-snackbar__icon {
                width: 36px;
                height: 36px;
            }

            .options-restore-snackbar__reset,
            .options-restore-snackbar__close {
                flex: 1;
                font-size: 0.75rem;
                padding: 0.625rem 0.75rem;
            }

            .simple-product-summary {
                padding: 1rem 1rem 1rem 1rem;
                margin: 1rem 0 0 0;
            }

            .delivery-info-block {
                padding: 1rem 1rem 1rem 1rem;
            }

            .simple-product-actions {
                margin-bottom: 0.75rem;
            }

            .summary-actions {
                margin-bottom: 0.75rem;
            }

            .price-breakdown {
                margin-bottom: 1.25rem;
            }

            .price-row {
                font-size: 0.875rem;
            }

            .price-row-total .price-label,
            .price-row-total .price-value {
                font-size: 1rem;
            }

            .security-badges {
                flex-direction: column;
                gap: 0.75rem;
                align-items: flex-start;
            }
        }