/* ============================================================================
   Aureum Buy UI — chips, steppers, add controls, vial-price ladder, cart cards
   (12 Sep 2026). Tokens from au-tokens.css; fallbacks are the brand palette.
   ============================================================================ */

:root {
	--au-buy-radius: 12px;
	--au-buy-radius-pill: 9999px;
	--au-buy-ease: cubic-bezier(.2, .8, .2, 1);
	--au-buy-control-h: 46px;
	--au-buy-control-h-sm: 40px;
}

/* ---------------------------------------------------------------- size chips ("specimen label") */
.au-chips { display: flex; flex-direction: column; gap: 10px; }
.au-chips__label {
	font-family: var(--au-body); font-size: 10px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--au-ink-muted, #6B665D);
}
.au-chips__row { display: flex; flex-wrap: wrap; gap: 8px; }
.au-chip {
	appearance: none; cursor: pointer;
	display: inline-flex; align-items: baseline; gap: 10px;
	min-height: var(--au-buy-control-h-sm);
	padding: 8px 14px;
	background: var(--au-paper, #FFFFFF);
	border: 1px solid var(--au-hairline-strong, rgba(31,27,23,.18));
	border-radius: var(--au-buy-radius);
	color: var(--au-ink, #1F1B17);
	font-family: var(--au-body);
	transition: background .2s var(--au-buy-ease), border-color .2s var(--au-buy-ease), color .2s var(--au-buy-ease), transform .2s var(--au-buy-ease);
	box-shadow: inset 0 0 0 1px transparent;
}
.au-chip__size { font-family: var(--au-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.au-chip__price { font-family: var(--au-display); font-size: 16px; letter-spacing: -.01em; }
.au-chip__price .woocommerce-Price-amount { color: inherit; font-family: inherit; }
.au-chip__note { font-family: var(--au-body); font-size: 10px; color: var(--au-ink-muted); letter-spacing: .08em; text-transform: uppercase; }
.au-chip:hover { border-color: var(--au-gold, #B8962E); transform: translateY(-1px); }
.au-chip:focus-visible { outline: 2px solid var(--au-gold); outline-offset: 2px; }
.au-chip.is-selected, .au-chip[aria-checked="true"] {
	background: var(--au-ink, #1F1B17); border-color: var(--au-ink, #1F1B17); color: var(--au-bone, #FBF8F2);
	box-shadow: inset 0 0 0 1px rgba(184,150,46,.55);
}
.au-chip.is-selected .au-chip__price, .au-chip[aria-checked="true"] .au-chip__price { color: var(--au-gold-bright, #E7C55B); }
.au-chip.is-out { opacity: .45; cursor: not-allowed; text-decoration: line-through; }
.au-chip.is-out:hover { transform: none; border-color: var(--au-hairline-strong); }

/* The WooCommerce select stays in the DOM for its own JS, off screen. */
.au-chips-host { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.single-product form.cart table.variations { margin: 0 0 18px; border: 0; }
.single-product form.cart table.variations th.label { display: none; }
.single-product form.cart table.variations td.value { padding: 0; }
.single-product form.cart .reset_variations { display: none !important; }
.single-product form.cart .woocommerce-variation.single_variation { display: none !important; } /* price is on the chips and the ladder */

/* ---------------------------------------------------------------- stepper */
.au-qty, .single-product form.cart .quantity {
	display: inline-flex; align-items: stretch;
	height: var(--au-buy-control-h);
	border: 1px solid var(--au-hairline-strong, rgba(31,27,23,.18));
	border-radius: var(--au-buy-radius-pill);
	background: var(--au-paper, #fff);
	overflow: hidden;
}
.au-qty__btn {
	appearance: none; border: 0; background: transparent; cursor: pointer;
	width: 44px; font-family: var(--au-body); font-size: 18px; line-height: 1; color: var(--au-ink);
	display: grid; place-items: center; transition: background .2s;
}
.au-qty__btn:hover { background: var(--au-cream, #F5F0E6); }
.au-qty__btn:focus-visible { outline: 2px solid var(--au-gold); outline-offset: -3px; }
.au-qty__input, .single-product form.cart .quantity input.qty {
	width: 52px; border: 0 !important; background: transparent !important; box-shadow: none !important; border-radius: 0 !important; text-align: center;
	font-family: var(--au-mono) !important; font-size: 15px !important; color: var(--au-ink) !important;
	-moz-appearance: textfield; appearance: textfield; padding: 0 !important; margin: 0 !important; height: auto !important; min-height: 0 !important; line-height: 1 !important;
}
.au-qty__input::-webkit-outer-spin-button, .au-qty__input::-webkit-inner-spin-button,
.single-product form.cart .quantity input.qty::-webkit-outer-spin-button, .single-product form.cart .quantity input.qty::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.au-qty__input:focus, .single-product form.cart .quantity input.qty:focus { outline: none; }
.au-qty--tile, .au-qty--tile .au-qty__btn { height: var(--au-buy-control-h-sm); }
.au-qty--tile .au-qty__btn { width: 36px; font-size: 16px; }
.au-qty--tile .au-qty__input { width: 40px; font-size: 13px; }

/* PDP button row */
.single-product form.cart .woocommerce-variation-add-to-cart,
.single-product form.cart:not(.variations_form) { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; width: 100%; }
.single-product form.cart .single_add_to_cart_button {
	flex: 1 1 220px; min-height: var(--au-buy-control-h);
	background: var(--au-ink, #1F1B17) !important; color: var(--au-bone, #FBF8F2) !important;
	border: 1px solid var(--au-ink) !important; border-radius: var(--au-buy-radius-pill) !important;
	font-family: var(--au-body) !important; font-size: 12px !important; font-weight: 600 !important; letter-spacing: .14em !important; text-transform: uppercase !important;
	transition: background .25s var(--au-buy-ease), color .25s var(--au-buy-ease), transform .25s var(--au-buy-ease) !important;
}
.single-product form.cart .single_add_to_cart_button:hover { background: var(--au-gold, #B8962E) !important; border-color: var(--au-gold) !important; color: var(--au-ink) !important; transform: translateY(-1px); }
.single-product form.cart .single_add_to_cart_button.disabled, .single-product form.cart .single_add_to_cart_button:disabled { opacity: .45; }

/* ---------------------------------------------------------------- vial-price ladder */
.au-ladder {
	width: 100%; margin-top: 18px; padding: 18px 20px;
	background: var(--au-cream, #F5F0E6); border: 1px solid var(--au-hairline, rgba(31,27,23,.08)); border-radius: var(--au-buy-radius);
}
.au-ladder__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 6px 12px; margin-bottom: 12px; }
.au-ladder__title { font-family: var(--au-body); font-size: 10px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--au-ink-muted); }
.au-ladder__live { font-family: var(--au-mono); font-size: 12px; color: var(--au-ink); letter-spacing: .02em; text-align: right; margin-left: auto; }
.au-ladder__rungs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.au-ladder__rung {
	display: flex; flex-direction: column; gap: 4px; align-items: center; text-align: center;
	padding: 10px 6px; border-radius: 10px; border: 1px solid transparent; background: transparent;
	transition: background .25s var(--au-buy-ease), border-color .25s var(--au-buy-ease);
}
.au-ladder__rung.is-active { background: var(--au-paper, #fff); border-color: rgba(184,150,46,.45); }
.au-ladder__qty { font-family: var(--au-mono); font-size: 11px; letter-spacing: .08em; color: var(--au-ink); text-transform: uppercase; }
.au-ladder__qty small { display: inline; margin-left: 4px; font-size: 9px; color: var(--au-ink-muted); letter-spacing: .14em; }
.au-ladder__each { font-family: var(--au-display); font-size: 17px; letter-spacing: -.01em; color: var(--au-ink); font-variant-numeric: tabular-nums; }
.au-ladder__pct { font-family: var(--au-body); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--au-ink-muted, #5F594F); font-weight: 600; }
.au-ladder__note { margin: 12px 0 0; font-family: var(--au-body); font-size: 11.5px; line-height: 1.5; color: var(--au-ink-muted); }

/* ---------------------------------------------------------------- catalog tile controls */
.au-card__foot { flex-wrap: wrap; }
.au-buy { display: flex; flex-direction: column; gap: 12px; width: 100%; }
.au-chips--tile .au-chip { padding: 6px 10px; min-height: 34px; gap: 8px; border-radius: 10px; }
.au-chips--tile .au-chip__size { font-size: 11px; }
.au-chips--tile .au-chip__price { font-size: 14px; }
.au-buy__rail { display: flex; align-items: center; gap: 8px; }
.au-buy__add {
	flex: 1; min-width: 0; min-height: var(--au-buy-control-h-sm); white-space: nowrap;
	display: inline-flex; align-items: center; justify-content: space-between; gap: 10px;
	padding: 0 16px; background: var(--au-ink, #1F1B17); color: var(--au-bone, #FBF8F2);
	border: 1px solid var(--au-ink); border-radius: var(--au-buy-radius-pill); cursor: pointer;
	font-family: var(--au-body); font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
	transition: background .25s var(--au-buy-ease), color .25s var(--au-buy-ease), border-color .25s var(--au-buy-ease);
}
.au-buy__add-price { font-family: var(--au-display); font-size: 15px; letter-spacing: -.01em; text-transform: none; color: var(--au-gold-bright, #E7C55B); font-variant-numeric: tabular-nums; }
.au-buy__add-price .woocommerce-Price-amount { color: inherit; font-family: inherit; }
.au-buy__add:hover { background: var(--au-gold, #B8962E); border-color: var(--au-gold); color: var(--au-ink); }
.au-buy__add:hover .au-buy__add-price { color: var(--au-ink); }
.au-buy__add:focus-visible { outline: 2px solid var(--au-gold); outline-offset: 2px; }
.au-buy__add:disabled { opacity: .45; cursor: not-allowed; }
.au-buy__add.is-busy { pointer-events: none; opacity: .7; }
.au-buy__add.is-done { background: var(--au-gold-dark, #8F6E1F); border-color: var(--au-gold-dark); color: var(--au-bone); }
.au-buy__link {
	display: inline-flex; align-items: center; min-height: var(--au-buy-control-h-sm); padding: 0 18px;
	border: 1px solid var(--au-hairline-strong); border-radius: var(--au-buy-radius-pill);
	font-family: var(--au-body); font-size: 10px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--au-ink); text-decoration: none;
}
.au-buy__link:hover { background: var(--au-ink); color: var(--au-bone); }
.au-card .au-card__buy { display: none; } /* replaced by the control rail */
.au-card .au-card__price { flex-direction: row; align-items: baseline; gap: 8px; }
.au-card__foot:empty { display: none !important; }
.au-buy--compact .au-chips--tile .au-chip { padding: 4px 8px; min-height: 30px; gap: 6px; }
.au-buy--compact .au-chips--tile .au-chip__price { font-size: 13px; }
.au-buy--compact .au-qty { display: none; } /* quick add is one unit; quantities live in the cart line */
.au-buy--compact .au-buy__add { justify-content: center; gap: 8px; }

/* ---------------------------------------------------------------- cart page item cards */
.au-cart-items { display: grid; gap: 12px; }
.au-cart-item {
	display: grid; grid-template-columns: 96px 1fr auto; grid-template-areas: "media body remove" "media rail rail"; gap: 6px 18px;
	padding: 18px; background: var(--au-paper, #fff); border: 1px solid var(--au-hairline); border-radius: 16px;
}
.au-cart-item__media { grid-area: media; align-self: start; width: 96px; aspect-ratio: 1; border-radius: 12px; background: var(--au-cream); border: 1px solid var(--au-hairline); overflow: hidden; display: grid; place-items: center; }
.au-cart-item__media img { width: 100%; height: 100%; object-fit: contain; display: block; }
.au-cart-item__body { grid-area: body; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.au-cart-item__cat { font-family: var(--au-body); font-size: 10px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--au-gold); }
.au-cart-item__name { margin: 0; font-family: var(--au-display); font-size: 20px; font-weight: 400; letter-spacing: -.01em; line-height: 1.2; }
.au-cart-item__name a { color: var(--au-ink); text-decoration: none; }
.au-cart-item__meta { font-family: var(--au-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--au-ink-muted); display: flex; flex-wrap: wrap; gap: 4px 12px; }
.au-cart-item__meta dl, .au-cart-item__meta p { margin: 0; display: inline; }
.au-cart-item__meta dt, .au-cart-item__meta dd { display: inline; margin: 0; }
.au-cart-item__remove { grid-area: remove; align-self: start; appearance: none; border: 0; background: transparent; color: var(--au-ink-muted); font-size: 20px; line-height: 1; cursor: pointer; padding: 2px 6px; border-radius: 6px; text-decoration: none; }
.au-cart-item__remove:hover { color: var(--au-ink); background: var(--au-cream); }
.au-cart-item__rail { grid-area: rail; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 10px; border-top: 1px solid var(--au-hairline); margin-top: 6px; }
.au-cart-item__unit { font-family: var(--au-body); font-size: 12px; color: var(--au-ink-muted); }
.au-cart-item__unit .woocommerce-Price-amount { font-family: var(--au-mono); color: var(--au-ink); }
.au-cart-item__sub { font-family: var(--au-display); font-size: 22px; letter-spacing: -.02em; color: var(--au-ink); font-variant-numeric: tabular-nums; }
.au-cart-item__sub .woocommerce-Price-amount { font-family: inherit; }
.au-cart-item .au-qty { height: var(--au-buy-control-h-sm); }
.au-cart-item .au-qty__btn { height: var(--au-buy-control-h-sm); width: 38px; }
.au-cart-item .quantity { display: contents; }
.au-cart-item .quantity label { display: none; }
.au-cart-update-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.au-cart-coupon { display: flex; gap: 8px; padding: 14px 16px; background: var(--au-paper); border: 1px solid var(--au-hairline); border-radius: 16px; }
.au-cart-coupon input { flex: 1; min-width: 0; padding: 10px 16px; border: 1px solid var(--au-hairline-strong); border-radius: var(--au-buy-radius-pill); font-family: var(--au-body); font-size: 13px; background: var(--au-paper); }

/* researchers also add */
.au-cart-reco { max-width: 1440px; margin: 0 auto; padding: 8px clamp(1rem, 3vw, 2rem) 64px; }
.au-cart-reco__head { margin-bottom: 20px; }
.au-cart-reco__head h2 { margin: 6px 0 0; font-family: var(--au-display); font-size: clamp(26px, 3vw, 36px); font-weight: 400; letter-spacing: -.02em; }
.au-cart-reco__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.au-mini { display: flex; flex-direction: column; background: var(--au-paper); border: 1px solid var(--au-hairline); border-radius: 14px; overflow: hidden; }
.au-mini__media { display: block; aspect-ratio: 1; background: var(--au-cream); }
.au-mini__media img { width: 100%; height: 100%; object-fit: contain; display: block; }
.au-mini__body { padding: 14px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.au-mini__title { margin: 0; font-family: var(--au-display); font-size: 16px; font-weight: 400; line-height: 1.25; letter-spacing: -.01em; }
.au-mini__title a { color: var(--au-ink); text-decoration: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1100px) { .au-cart-reco__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
	.au-ladder__rungs { grid-template-columns: repeat(4, 1fr); gap: 4px; }
	.au-ladder__each { font-size: 15px; }
	.au-ladder { padding: 14px; }
	.au-cart-item { grid-template-columns: 76px 1fr auto; gap: 4px 14px; padding: 14px; }
	.au-cart-item__media { width: 76px; }
	.au-cart-item__name { font-size: 18px; }
	.au-cart-item__rail { display: grid; grid-template-columns: 1fr auto; grid-template-areas: "unit sub" "qty qty"; gap: 8px 12px; align-items: center; }
	.au-cart-item__unit { grid-area: unit; }
	.au-cart-item__sub { grid-area: sub; }
	.au-cart-item .au-qty { grid-area: qty; justify-self: start; }
	.au-cart-item__meta { font-size: 10px; }
}
@media (max-width: 560px) {
	.au-cart-reco__grid { grid-template-columns: 1fr 1fr; gap: 10px; }
	.au-mini__body { padding: 10px; }
	.au-chips--tile .au-chip { padding: 5px 8px; min-height: 30px; }
}
@media (prefers-reduced-motion: reduce) {
	.au-chip, .au-buy__add, .au-ladder__rung, .single-product form.cart .single_add_to_cart_button { transition: none !important; }
	.au-chip:hover, .single-product form.cart .single_add_to_cart_button:hover { transform: none; }
}

/* ---------------------------------------------------------------- PDP price + RUO specimen line */
.au-pdp-price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 12px; margin: 8px 0; }
.au-pdp-price__from { font-family: var(--au-body); font-size: 11px; text-transform: uppercase; letter-spacing: .14em; color: var(--au-ink-muted); }
.au-pdp-price__amount { font-family: var(--au-display); font-size: 42px; color: var(--au-ink); letter-spacing: -.025em; line-height: 1; font-variant-numeric: tabular-nums; }
.au-pdp-price__amount .woocommerce-Price-amount { font-family: inherit; color: inherit; }
.au-pdp-price__size { font-family: var(--au-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--au-ink-muted); }
.au-pdp-price__size:empty { display: none; }
.au-ruo-line {
	display: flex; align-items: center; gap: 10px; margin: 0 0 16px; padding: 10px 0;
	border-top: 1px solid var(--au-hairline); border-bottom: 1px solid var(--au-hairline);
	font-family: var(--au-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--au-ink-soft);
}
.au-ruo-line svg { width: 14px; height: 14px; flex: 0 0 auto; fill: none; stroke: var(--au-gold); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------------------------------------------------------------- PDP specimen sheet (under the gallery, wide screens) */
.au-spec-sheet {
	display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0;
	margin: 14px 0 0; padding: 0; border: 1px solid var(--au-hairline); border-radius: 14px; background: var(--au-paper, #fff); overflow: hidden;
}
.au-spec-sheet__row { padding: 12px 16px; border-right: 1px solid var(--au-hairline); border-bottom: 1px solid var(--au-hairline); min-width: 0; }
.au-spec-sheet__row:nth-child(3n) { border-right: 0; }
.au-spec-sheet__row--wide { grid-column: 1 / -1; border-right: 0; }
.au-spec-sheet dt { margin: 0 0 4px; font-family: var(--au-body); font-size: 9.5px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--au-ink-muted); }
.au-spec-sheet dd { margin: 0; font-family: var(--au-mono); font-size: 12px; line-height: 1.45; color: var(--au-ink); letter-spacing: .01em; overflow-wrap: anywhere; }
.au-spec-sheet__row--wide dd { font-size: 11px; }
@media (max-width: 1024px) { .au-spec-sheet { display: none; } } /* the Specifications tab carries it on phones */

/* ---- free lines: included solvent, BOGO twin, Circle gift (13 Sep 2026) ---- */
.au-free-tag { display:inline-block; margin-left:.45em; font-family:var(--au-mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--au-gold-ink, #6E5417); border:1px solid var(--au-gold); border-radius:3px; padding:.1em .4em; vertical-align:middle; }
.au-free-qty { font-family:var(--au-mono); font-size:13px; color:var(--au-ink-muted, #5F594F); }
.au-bogo-list { font-family:var(--au-body); font-size:14px; color:var(--au-ink-muted, #5F594F); line-height:1.7; }