/* Together Buy (bt-tb). Design-system tokens with literal fallbacks. */
.bt-tb { margin: 48px 0 32px; padding: 28px; border: 1px solid var(--bt-border, #e3e0da); border-radius: var(--bt-radius-md, 8px); background: var(--bt-surface, #fff); }
.bt-tb-head h3 { margin: 0 0 6px; font-size: 22px; font-weight: 600; line-height: 1.2; color: var(--bt-text, #17191d); }
.bt-tb-head p { margin: 0 0 20px; font-size: 14px; line-height: 1.5; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-items { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.bt-tb-item { position: relative; display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 16px; align-items: start; padding: 16px; border: 1px solid var(--bt-border, #e3e0da); border-radius: var(--bt-radius-md, 8px); background: var(--bt-bg, #f8f7f5); transition: opacity 150ms ease, border-color 150ms ease; }
.bt-tb-item--main { border-color: var(--bt-border-strong, #c4c0b8); background: var(--bt-surface, #fff); }
.bt-tb-item.is-off { opacity: .55; }
.bt-tb-check { position: absolute; top: 12px; right: 12px; display: block; margin: 0; }
.bt-tb-check input { width: 22px; height: 22px; margin: 0; accent-color: var(--bt-action, #17191d); cursor: pointer; }
.bt-tb-img { display: block; width: 88px; height: 88px; border-radius: var(--bt-radius-sm, 4px); background: var(--bt-surface, #fff); overflow: hidden; }
.bt-tb-img img { display: block; width: 100%; height: 100%; object-fit: contain; }
.bt-tb-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; padding-right: 28px; }
.bt-tb-kicker { font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--bt-text-muted, #6f737c); }
.bt-tb-brand { font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-name, .bt-tb-name strong { font-size: 15px; font-weight: 500; line-height: 1.35; color: var(--bt-text, #17191d); text-decoration: none; }
.bt-tb-sel { font-size: 13px; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-sel:empty { display: none; }
.bt-tb-price { font-size: 16px; font-weight: 600; color: var(--bt-text, #17191d); font-variant-numeric: tabular-nums; }
.bt-tb-price:empty { display: none; }
.bt-tb-status { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--bt-border-strong, #c4c0b8); }
.bt-tb-status.is-in { color: var(--bt-stock, #1b7a4b); } .bt-tb-status.is-in::before { background: var(--bt-stock, #1b7a4b); }
.bt-tb-status.is-pre { color: var(--bt-warning, #9a5b00); } .bt-tb-status.is-pre::before { background: var(--bt-warning-dot, #d98e04); }
.bt-tb-status.is-mto { color: var(--bt-brand, #1f2d4d); } .bt-tb-status.is-mto::before { background: var(--bt-brand, #1f2d4d); }
.bt-tb-status.is-out { color: var(--bt-text-muted, #6f737c); }
.bt-tb-attrs { display: grid; gap: 8px; margin: 6px 0; }
.bt-tb-attr { display: grid; gap: 4px; margin: 0; font-size: 13px; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-attr select { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--bt-border-strong, #c4c0b8); border-radius: var(--bt-radius-sm, 4px); background-color: var(--bt-surface, #fff); font-size: 15px; }
.bt-tb-summary { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 340px); gap: 8px 32px; align-items: end; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--bt-border, #e3e0da); }
.bt-tb-lines { grid-row: 1 / span 3; margin: 0; display: grid; gap: 6px; align-content: start; }
.bt-tb-line { display: flex; justify-content: space-between; gap: 16px; font-size: 14px; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-line dt { margin: 0; font-weight: 400; min-width: 0; } .bt-tb-line dd { margin: 0; font-weight: 500; color: var(--bt-text, #17191d); white-space: nowrap; font-variant-numeric: tabular-nums; }
.bt-tb-total { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.bt-tb-total span { font-size: 14px; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-total strong { font-size: 24px; font-weight: 600; color: var(--bt-text, #17191d); font-variant-numeric: tabular-nums; text-align: right; }
.bt-tb-cta { width: 100%; min-height: 56px; margin: 0; }
.bt-tb-form.is-incomplete .bt-tb-cta { background: var(--bt-surface, #fff) !important; color: var(--bt-text, #17191d) !important; border: 1px solid var(--bt-border-strong, #c4c0b8) !important; box-shadow: none !important; }
.bt-tb-msg { grid-column: 2; margin: 0; min-height: 0; font-size: 13px; line-height: 1.45; color: var(--bt-warning, #9a5b00); }
.bt-tb-msg:empty { display: none; }
@media (max-width: 767px) {
	.bt-tb { margin: 32px 0 24px; padding: 16px; }
	.bt-tb-items { grid-template-columns: 1fr; gap: 12px; }
	.bt-tb-item { grid-template-columns: 72px minmax(0, 1fr); gap: 12px; padding: 14px; }
	.bt-tb-img { width: 72px; height: 72px; }
	.bt-tb-summary { grid-template-columns: 1fr; gap: 12px; }
	.bt-tb-lines { grid-row: auto; }
	.bt-tb-msg { grid-column: 1; }
	.bt-tb-total strong { font-size: 22px; }
}

/* read-only companion block on an out-of-stock main product */
.bt-tb--info { margin: 24px 0; padding: 20px; border: 1px solid var(--bt-border, #e4e1da); border-radius: var(--bt-radius-md, 8px); background: var(--bt-surface, #fff); }
.bt-tb--info .bt-tb-title { margin: 0 0 6px; font-size: 18px; font-weight: 600; }
.bt-tb--info .bt-tb-note { margin: 0 0 14px; font-size: 14px; color: var(--bt-text-secondary, #4b4f58); }
.bt-tb-info-list { list-style: none !important; margin: 0 !important; padding: 0 !important; display: grid; gap: 10px; }
.bt-tb-info-link { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 10px; border: 1px solid var(--bt-border, #e4e1da); border-radius: var(--bt-radius-sm, 4px); text-decoration: none; color: inherit; }
.bt-tb-info-link:hover { border-color: var(--bt-text, #17191d); }
.bt-tb-info-img img { display: block; width: 72px; height: 72px; object-fit: contain; }
.bt-tb-info-body { display: grid; gap: 2px; min-width: 0; }
.bt-tb-info-name { font-size: 14px; font-weight: 500; line-height: 1.35; }
.bt-tb-info-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 14px; }
.bt-tb-info-cta { font-size: 14px; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 767px) { .bt-tb-info-link { grid-template-columns: 64px minmax(0, 1fr); } .bt-tb-info-cta { grid-column: 2; } .bt-tb-info-img img { width: 64px; height: 64px; } }