.tshirt-control-stack {
            display: grid;
            gap: 14px;
        }

        .tshirt-color-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 8px;
        }

        .tshirt-color-btn {
            width: 34px;
            height: 34px;
            border: 1px solid #d0d5dd;
            border-radius: 999px;
            background: var(--swatch);
            padding: 0;
            position: relative;
            transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
        }

        .tshirt-color-btn::after {
            content: '';
            position: absolute;
            inset: 6px;
            border: 2px solid #ffffff;
            border-radius: 999px;
            opacity: 0;
            transform: scale(.7);
            transition: opacity .18s ease, transform .18s ease;
        }

        .tshirt-color-btn.is-active {
            border-color: #0073FC;
            box-shadow: 0 0 0 2px rgba(0, 115, 252, .16);
        }

        .tshirt-color-btn.is-active::after {
            opacity: 1;
            transform: scale(1);
        }

        .tshirt-style-row {
            display: grid;
            gap: 10px;
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }

        .tshirt-style-btn {
            min-height: 42px;
            border: 1px solid #d0d5dd;
            border-radius: 8px;
            background: #fff;
            color: #475467;
            font-weight: 600;
            transition: border-color .18s ease, background-color .18s ease, color .18s ease;
        }

        .tshirt-style-btn.is-active {
            border-color: #0073FC;
            background: #eff8ff;
            color: #0f172a;
        }

        .tshirt-field-head {
            align-items: center;
            display: flex;
            gap: 12px;
            justify-content: space-between;
        }

        .tshirt-link {
            background: none;
            border: 0;
            color: #1d77e2;
            font-size: 12px;
            font-weight: 600;
            padding: 0;
        }

        .tshirt-quantity-note {
            color: #667085;
            font-size: 12px;
            line-height: 1.45;
            margin: 6px 0 0;
        }

        .tshirt-size-grid {
            display: grid;
            gap: 8px 10px;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            margin-top: 10px;
        }

        .tshirt-size-card[hidden] {
            display: none !important;
        }

        .tshirt-size-card {
            background: #fff;
            border: 1px solid #d0d5dd;
            border-radius: 12px;
            min-height: 78px;
            padding: 10px 12px 9px;
        }

        .tshirt-size-card label {
            color: #344054;
            display: block;
            font-size: 12px;
            font-weight: 700;
            line-height: 1.15;
            margin-bottom: 6px;
        }

        .tshirt-size-card .bc-select {
            width: 100%;
            min-height: 38px;
            height: 38px;
            padding-bottom: 7px;
            padding-top: 7px;
            font-size: 13px;
        }

        .tshirt-add-btn {
            width: 100%;
            background: #0073FC;
            border: 1px solid #0073FC;
            border-radius: 999px;
            color: #fff;
            font-weight: 700;
            margin-top: 14px;
            min-height: 46px;
            transition: background-color .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
        }

        .tshirt-add-btn:disabled {
            background: #e5e7eb;
            border-color: #cbd5e1;
            box-shadow: none;
            color: #98a2b3;
            cursor: not-allowed;
        }

        .tshirt-add-btn.is-update {
            background: #fff;
            border-color: #b6bcc6;
            box-shadow: 0 1px 1px rgba(16, 24, 40, .04);
            color: #344054;
        }

        .tshirt-summary {
            background: #fff;
            border: 0;
            border-radius: 0;
            margin-top: 12px;
            padding: 0;
        }

        .tshirt-summary-row {
            align-items: flex-start;
            border-bottom: 1px solid #edf1f6;
            display: flex;
            font-size: 13px;
            gap: 10px;
            justify-content: space-between;
            padding: 9px 0 10px;
        }

        .tshirt-summary-row:last-child {
            border-bottom: 0;
        }

        .tshirt-summary-details {
            display: grid;
            gap: 4px;
        }

        .tshirt-summary-row strong {
            color: #344054;
            font-size: 13px;
            font-weight: 700;
        }

        .tshirt-summary-row span {
            color: #667085;
            font-size: 13px;
            font-weight: 500;
        }

        .tshirt-summary-remove {
            background: transparent;
            border: 0;
            color: #667085;
            cursor: pointer;
            font-size: 18px;
            line-height: 1;
            padding: 0 2px;
        }

        .tshirt-summary-remove:hover {
            color: #344054;
        }

        .tshirt-size-chart-modal .bc-modal {
            max-height: 90vh;
            overflow: auto;
            width: min(92vw, 820px);
        }

        .tshirt-size-chart-modal .bc-modal-body {
            max-height: calc(90vh - 64px);
            overflow: auto;
        }

        .tshirt-size-chart-modal img {
            display: block;
            height: auto;
            width: 100%;
        }

        @media (max-width: 991.98px) {
            .tshirt-style-row,
            .tshirt-size-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 575.98px) {
            .tshirt-size-grid {
                grid-template-columns: 1fr;
            }
        }