/**
 * Vietsite Bought Together — Frontend styles
 * Scope all selectors under .vbt- prefix to avoid theme conflicts.
 *
 * @version 1.0.0
 */

:root {
	--vbt-primary: #6366f1;
	--vbt-primary-dark: #4f46e5;
	--vbt-text: #111827;
	--vbt-text-muted: #6b7280;
	--vbt-border: #e5e7eb;
	--vbt-border-strong: #d1d5db;
	--vbt-bg: #ffffff;
	--vbt-bg-soft: #f9fafb;
	--vbt-success: #10b981;
	--vbt-success-bg: #ecfdf5;
	--vbt-danger: #ef4444;
	--vbt-warn: #f59e0b;
	--vbt-radius: 10px;
	--vbt-radius-sm: 6px;
	--vbt-shadow: 0 1px 3px rgba(0,0,0,0.06);
	--vbt-shadow-md: 0 4px 12px rgba(15,23,42,0.06);
	--vbt-spacing: 16px;
	--vbt-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ─────────────────────────────────────────
   Container
   ───────────────────────────────────────── */

.vbt-box,
.vbt-combos,
.vbt-cart-upsell,
.vbt-checkout-upsell {
	font-family: var(--vbt-font);
	color: var(--vbt-text);
	box-sizing: border-box;
}

.vbt-box *,
.vbt-combos *,
.vbt-cart-upsell *,
.vbt-checkout-upsell * { box-sizing: border-box; }

/* Bought-together box */
.vbt-box {
	margin: 24px 0;
	background: var(--vbt-bg);
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius);
	box-shadow: var(--vbt-shadow);
	padding: 20px;
}

.vbt-box__header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin: 0 0 16px;
}

.vbt-box__title {
	margin: 0;
	font-size: 16px;
	font-weight: 700;
	letter-spacing: -0.01em;
	color: var(--vbt-text);
	line-height: 1.3;
}

/* List items */
.vbt-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.vbt-item {
	display: flex;
	align-items: center;
	gap: 14px;
	padding: 12px;
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius-sm);
	background: var(--vbt-bg-soft);
	transition: border-color 0.15s ease, background 0.15s ease;
}

.vbt-item:hover { border-color: var(--vbt-border-strong); }
.vbt-item.is-disabled { opacity: 0.7; }
.vbt-item--main { background: #fff; border-color: var(--vbt-border-strong); }

.vbt-item__label {
	display: flex;
	align-items: center;
	gap: 12px;
	flex: 1;
	cursor: pointer;
	min-width: 0;
}

.vbt-item__check {
	width: 20px;
	height: 20px;
	min-width: 20px;
	margin: 0;
	cursor: pointer;
	accent-color: var(--vbt-primary);
}

.vbt-item__media {
	width: 60px;
	height: 60px;
	flex: 0 0 60px;
	border-radius: var(--vbt-radius-sm);
	overflow: hidden;
	background: #fff;
	border: 1px solid var(--vbt-border);
	display: flex;
	align-items: center;
	justify-content: center;
}
.vbt-item__media img,
.vbt-item__media a img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.vbt-item__info {
	display: flex;
	flex-direction: column;
	gap: 4px;
	min-width: 0;
	flex: 1;
}

.vbt-item__name {
	font-size: 14px;
	font-weight: 600;
	color: var(--vbt-text);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	line-clamp: 2;
	overflow: hidden;
	line-height: 1.4;
}
.vbt-item__name a { color: inherit; text-decoration: none; }
.vbt-item__name a:hover { color: var(--vbt-primary); }

.vbt-item__meta { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.vbt-item__main-tag {
	font-size: 11px;
	background: var(--vbt-primary);
	color: #fff;
	padding: 2px 8px;
	border-radius: 999px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.vbt-item__price {
	font-size: 14px;
	color: var(--vbt-text);
	font-weight: 600;
}
.vbt-item__price del {
	color: var(--vbt-text-muted);
	font-weight: 400;
	margin-right: 4px;
}
.vbt-item__price ins {
	background: transparent;
	text-decoration: none;
	color: var(--vbt-danger);
}

.vbt-item__status {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	font-size: 12px;
	font-weight: 500;
	margin-top: 2px;
}
.vbt-item__status--in    { color: var(--vbt-success); }
.vbt-item__status--out   { color: var(--vbt-danger); }
.vbt-item__status--variation { color: var(--vbt-warn); }
.vbt-item__select-link {
	font-size: 12px;
	margin-left: 8px;
	color: var(--vbt-primary);
	text-decoration: none;
	font-weight: 600;
}
.vbt-item__select-link:hover { text-decoration: underline; }

/* Quantity stepper */
.vbt-item__qty {
	display: inline-flex;
	align-items: center;
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius-sm);
	background: #fff;
}
.vbt-qty-btn {
	width: 32px;
	height: 32px;
	border: 0;
	background: transparent;
	color: var(--vbt-text);
	cursor: pointer;
	font-size: 16px;
	font-weight: 700;
	line-height: 1;
}
.vbt-qty-btn:hover { color: var(--vbt-primary); }
.vbt-qty {
	width: 44px;
	height: 32px;
	border: 0;
	border-left: 1px solid var(--vbt-border);
	border-right: 1px solid var(--vbt-border);
	background: transparent;
	text-align: center;
	font-size: 14px;
	font-weight: 600;
	color: var(--vbt-text);
	-moz-appearance: textfield;
}
.vbt-qty::-webkit-outer-spin-button,
.vbt-qty::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* Summary */
.vbt-summary {
	margin-top: 16px;
	padding-top: 16px;
	border-top: 1px dashed var(--vbt-border);
}

.vbt-summary__row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 12px;
}
.vbt-summary__label {
	font-size: 14px;
	color: var(--vbt-text-muted);
	font-weight: 500;
}
.vbt-summary__value {
	font-size: 20px;
	font-weight: 800;
	color: var(--vbt-text);
	letter-spacing: -0.01em;
}

/* Buttons */
.vbt-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 10px 18px;
	border-radius: var(--vbt-radius-sm);
	border: 1px solid transparent;
	font-size: 14px;
	font-weight: 600;
	font-family: inherit;
	cursor: pointer;
	line-height: 1.4;
	transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
	text-decoration: none;
	min-height: 44px;
}
.vbt-btn:focus-visible { outline: 2px solid var(--vbt-primary); outline-offset: 2px; }
.vbt-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.vbt-btn--primary {
	background: var(--vbt-primary);
	color: #fff;
	box-shadow: 0 2px 6px rgba(99,102,241,0.25);
}
.vbt-btn--primary:hover:not(:disabled) {
	background: var(--vbt-primary-dark);
	color: #fff;
	transform: translateY(-1px);
	box-shadow: 0 4px 14px rgba(99,102,241,0.35);
}
.vbt-btn--primary:active { transform: translateY(0); }

.vbt-btn--ghost {
	background: #fff;
	color: var(--vbt-text);
	border-color: var(--vbt-border-strong);
}
.vbt-btn--ghost:hover { background: var(--vbt-bg-soft); border-color: var(--vbt-primary); color: var(--vbt-primary); }

.vbt-btn--full { width: 100%; }
.vbt-btn--sm  { padding: 7px 12px; font-size: 13px; min-height: 36px; }

.vbt-btn .vbt-icon { width: 18px; height: 18px; }
.vbt-btn.is-loading { pointer-events: none; opacity: 0.85; }
.vbt-btn.is-loading::after {
	content: "";
	width: 14px;
	height: 14px;
	border-radius: 50%;
	border: 2px solid currentColor;
	border-right-color: transparent;
	animation: vbt-spin 0.7s linear infinite;
	margin-left: 4px;
}

@keyframes vbt-spin { to { transform: rotate(360deg); } }

/* Feedback */
.vbt-feedback {
	margin-top: 10px;
	min-height: 20px;
	font-size: 13px;
}
.vbt-feedback .vbt-msg {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 8px 12px;
	border-radius: var(--vbt-radius-sm);
	font-weight: 500;
}
.vbt-feedback .vbt-msg--success { background: var(--vbt-success-bg); color: var(--vbt-success); }
.vbt-feedback .vbt-msg--error   { background: #fef2f2; color: var(--vbt-danger); }

/* Tags */
.vbt-tag {
	display: inline-flex;
	align-items: center;
	font-size: 12px;
	padding: 4px 10px;
	border-radius: 999px;
	background: var(--vbt-bg-soft);
	color: var(--vbt-text-muted);
	font-weight: 600;
}
.vbt-tag--in-cart { background: var(--vbt-success-bg); color: var(--vbt-success); }

/* ─────────────────────────────────────────
   Combos
   ───────────────────────────────────────── */

.vbt-combos {
	margin-top: 24px;
	padding-top: 24px;
	border-top: 1px solid var(--vbt-border);
}
.vbt-combos__title { margin: 0 0 14px; font-size: 16px; font-weight: 700; }

.vbt-combo-list { display: flex; flex-direction: column; gap: 14px; }

.vbt-combo {
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius);
	padding: 16px;
	background: var(--vbt-bg-soft);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.vbt-combo:hover { border-color: var(--vbt-primary); box-shadow: var(--vbt-shadow-md); }

.vbt-combo__name { margin: 0 0 4px; font-size: 15px; font-weight: 700; }
.vbt-combo__desc { color: var(--vbt-text-muted); font-size: 13px; margin-bottom: 10px; }

.vbt-combo__items {
	list-style: none;
	margin: 0 0 14px;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 8px;
}
.vbt-combo__item { display: flex; align-items: center; gap: 10px; }
.vbt-combo__thumb {
	width: 40px; height: 40px;
	flex: 0 0 40px;
	border-radius: var(--vbt-radius-sm);
	overflow: hidden;
	border: 1px solid var(--vbt-border);
	background: #fff;
}
.vbt-combo__thumb img { width: 100%; height: 100%; object-fit: cover; }
.vbt-combo__name-wrap { display: flex; align-items: center; gap: 6px; flex: 1; min-width: 0; }
.vbt-combo__link {
	color: var(--vbt-text);
	text-decoration: none;
	font-weight: 600;
	font-size: 13px;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	min-width: 0;
}
.vbt-combo__link:hover { color: var(--vbt-primary); }
.vbt-combo__qty { color: var(--vbt-text-muted); font-size: 12px; }

.vbt-combo__footer {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding-top: 12px;
	border-top: 1px dashed var(--vbt-border);
	flex-wrap: wrap;
}
.vbt-combo__pricing { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.vbt-combo__regular { color: var(--vbt-text-muted); text-decoration: line-through; font-size: 13px; }
.vbt-combo__final  { color: var(--vbt-text); font-weight: 800; font-size: 18px; }
.vbt-combo__save {
	background: var(--vbt-success-bg);
	color: var(--vbt-success);
	font-weight: 700;
	font-size: 12px;
	padding: 3px 10px;
	border-radius: 999px;
}

/* ─────────────────────────────────────────
   Cart upsell
   ───────────────────────────────────────── */

.vbt-cart-upsell {
	margin-top: 28px;
	padding: 20px;
	background: var(--vbt-bg);
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius);
}
.vbt-cart-upsell__header { margin-bottom: 14px; }
.vbt-cart-upsell__title  { margin: 0 0 4px; font-size: 16px; font-weight: 700; }
.vbt-cart-upsell__sub    { margin: 0; color: var(--vbt-text-muted); font-size: 13px; }

.vbt-cart-upsell__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
	gap: 12px;
}

.vbt-cart-upsell__item {
	display: flex;
	gap: 10px;
	padding: 10px;
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius-sm);
	background: var(--vbt-bg-soft);
	align-items: center;
}
.vbt-cart-upsell__media { width: 56px; height: 56px; flex: 0 0 56px; border-radius: var(--vbt-radius-sm); overflow: hidden; background: #fff; border: 1px solid var(--vbt-border); }
.vbt-cart-upsell__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.vbt-cart-upsell__info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.vbt-cart-upsell__name { font-size: 13px; font-weight: 600; color: var(--vbt-text); text-decoration: none; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-clamp: 2; overflow: hidden; }
.vbt-cart-upsell__name:hover { color: var(--vbt-primary); }
.vbt-cart-upsell__price { font-size: 13px; font-weight: 600; color: var(--vbt-text); }
.vbt-cart-upsell__cta { display: flex; align-items: center; }

/* ─────────────────────────────────────────
   Checkout upsell
   ───────────────────────────────────────── */

.vbt-checkout-upsell-row > td { padding: 16px !important; }
.vbt-checkout-upsell {
	border: 1px solid var(--vbt-border);
	border-radius: var(--vbt-radius);
	padding: 14px;
	background: var(--vbt-bg-soft);
}
.vbt-checkout-upsell__title { margin: 0 0 10px; font-size: 14px; font-weight: 700; }
.vbt-checkout-upsell__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.vbt-checkout-upsell__item { display: flex; align-items: center; gap: 10px; }
.vbt-checkout-upsell__media { width: 40px; height: 40px; flex: 0 0 40px; border-radius: var(--vbt-radius-sm); overflow: hidden; background: #fff; border: 1px solid var(--vbt-border); }
.vbt-checkout-upsell__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.vbt-checkout-upsell__info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.vbt-checkout-upsell__name { font-size: 13px; font-weight: 600; line-height: 1.3; }
.vbt-checkout-upsell__price { font-size: 12px; color: var(--vbt-text-muted); }

/* Cart combo tag */
.vbt-cart-combo-tag {
	display: inline-block;
	padding: 2px 8px;
	background: var(--vbt-primary);
	color: #fff;
	border-radius: 999px;
	font-size: 11px;
	font-weight: 600;
	letter-spacing: 0.02em;
	margin-top: 4px;
}

/* ─────────────────────────────────────────
   Responsive
   ───────────────────────────────────────── */

@media (max-width: 600px) {
	.vbt-box { padding: 14px; margin: 18px 0; }

	.vbt-item { padding: 10px; gap: 10px; flex-wrap: wrap; }
	.vbt-item__media { width: 56px; height: 56px; flex-basis: 56px; }
	.vbt-item__qty { margin-left: 32px; }

	.vbt-summary__value { font-size: 18px; }
	.vbt-btn { width: 100%; }

	.vbt-combo__footer { gap: 8px; }
	.vbt-combo__footer .vbt-btn { width: 100%; }
	.vbt-cart-upsell__list { grid-template-columns: 1fr; }
}

@media (max-width: 380px) {
	.vbt-box__title { font-size: 15px; }
	.vbt-item__media { width: 48px; height: 48px; flex-basis: 48px; }
}


/* ─────────────────────────────────────────
   Inline variation picker
   ───────────────────────────────────────── */

.vbt-item.has-inline-variation { flex-wrap: wrap; }

.vbt-item__variation-toggle {
	background: transparent;
	border: 0;
	padding: 0;
	margin: 0;
	color: var(--vbt-primary);
	font-weight: 600;
	font-size: 12px;
	cursor: pointer;
	font-family: inherit;
}
.vbt-item__variation-toggle:hover { text-decoration: underline; }

.vbt-item__variations {
	flex: 1 0 100%;
	margin-top: 12px;
	padding: 12px;
	background: #fff;
	border: 1px dashed var(--vbt-border-strong);
	border-radius: var(--vbt-radius-sm);
}
.vbt-item__variations[hidden] { display: none; }

.vbt-variations__loading {
	display: flex;
	align-items: center;
	gap: 8px;
	color: var(--vbt-text-muted);
	font-size: 13px;
}

.vbt-mini-spinner {
	width: 14px;
	height: 14px;
	border-radius: 50%;
	border: 2px solid var(--vbt-border-strong);
	border-top-color: var(--vbt-primary);
	animation: vbt-spin 0.7s linear infinite;
	display: inline-block;
}

.vbt-variations__attr {
	margin-bottom: 10px;
	display: flex;
	flex-direction: column;
	gap: 6px;
}
.vbt-variations__attr-label {
	font-size: 12px;
	font-weight: 600;
	color: var(--vbt-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}
.vbt-variations__options { display: flex; flex-wrap: wrap; gap: 6px; }
.vbt-variations__opt {
	display: inline-flex;
	align-items: center;
	padding: 6px 12px;
	border: 1.5px solid var(--vbt-border-strong);
	border-radius: var(--vbt-radius-sm);
	background: #fff;
	color: var(--vbt-text);
	font-size: 13px;
	font-weight: 600;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
	min-height: 36px;
}
.vbt-variations__opt:hover  { border-color: var(--vbt-primary); }
.vbt-variations__opt.is-active {
	border-color: var(--vbt-primary);
	background: var(--vbt-primary);
	color: #fff;
}
.vbt-variations__opt[disabled] {
	opacity: 0.5;
	cursor: not-allowed;
	text-decoration: line-through;
}
.vbt-variations__feedback {
	margin-top: 8px;
	font-size: 12px;
	color: var(--vbt-text-muted);
}
.vbt-variations__feedback.is-error { color: var(--vbt-danger); }
.vbt-variations__feedback.is-ok    { color: var(--vbt-success); font-weight: 600; }

/* ─────────────────────────────────────────
   Sticky total on mobile
   ───────────────────────────────────────── */

@media (max-width: 600px) {
	.vbt-box.is-sticky-mobile .vbt-summary {
		position: sticky;
		bottom: 0;
		left: 0;
		right: 0;
		z-index: 10;
		background: #fff;
		margin: 16px -14px -14px;
		padding: 14px;
		border-top: 1px solid var(--vbt-border);
		box-shadow: 0 -6px 16px rgba(15, 23, 42, 0.08);
	}
}