/*
 * Slab Jewelry Builder — configurator styles.
 * Direction: premium jewelry, black/white, subtle royal-blue accent,
 * Apple-like simplicity, product imagery as the visual hero. Presentation
 * only -- no functional/behavioral logic lives here.
 */

.sjb-builder {
	--sjb-black: #111111;
	--sjb-white: #ffffff;
	--sjb-gray-50: #fafafa;
	--sjb-gray-100: #f2f2f2;
	--sjb-gray-300: #e2e2e2;
	--sjb-gray-500: #85868a;
	--sjb-accent: #2954ff;
	--sjb-accent-dark: #1c3fd1;
	--sjb-accent-tint: #eef1ff;
	--sjb-navy: #10182b;
	--sjb-stage-bg: #161616;
	--sjb-radius: 8px;

	color: var(--sjb-black);
	background: var(--sjb-white);
	font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
	max-width: 1640px;
	margin: 0 auto;
	padding: clamp(1rem, 0.75rem + 1.5vw, 2.5rem) 1.5rem;
	box-sizing: border-box;
}

.sjb-builder *,
.sjb-builder *::before,
.sjb-builder *::after {
	box-sizing: border-box;
}

.sjb-builder__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: clamp(2rem, 1.5rem + 2vw, 4rem);
}

@media (min-width: 768px) {
	.sjb-builder__grid {
		grid-template-columns: 1.1fr 1fr;
		align-items: start;
	}

	/*
	 * The options column (3 steps + summary) is naturally taller than the
	 * preview image, which otherwise leaves visible empty space below the
	 * preview once the page scrolls. Pinning the preview keeps it dominant
	 * and in view for the whole time the customer is configuring, rather
	 * than leaving a static image stranded above a stretch of white space.
	 */
	.sjb-builder__preview {
		position: sticky;
		/* Clears the site's own sticky header (90px) plus a small gap. */
		top: calc(90px + 1.5rem);
	}
}

@media (min-width: 992px) {
	.sjb-builder__grid {
		grid-template-columns: 1.2fr 1fr;
		gap: 4.5rem;
	}
}

/* ---------- Header ---------- */

.sjb-builder__header {
	margin-bottom: clamp(2rem, 1.5rem + 1.5vw, 3rem);
}

.sjb-eyebrow {
	display: block;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--sjb-accent);
	margin-bottom: 0.75rem;
}

.sjb-heading {
	font-size: clamp(2.4rem, 1.6rem + 3.2vw, 3.8rem);
	font-weight: 700;
	line-height: 1.04;
	letter-spacing: -0.01em;
	margin: 0 0 1rem;
}

.sjb-subhead {
	font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.25rem);
	line-height: 1.5;
	color: var(--sjb-gray-500);
	max-width: 40ch;
	margin: 0;
}

/* The BASE specification: states what every piece is made of, since those
   are no longer customer choices. */
.sjb-spec-row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem 1rem;
	list-style: none;
	margin: 1.5rem 0 0;
	padding: 0;
	font-size: 0.76rem;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sjb-gray-500);
}

.sjb-spec-row li {
	display: flex;
	align-items: center;
	gap: 1rem;
}

.sjb-spec-row li:not(:last-child)::after {
	content: "";
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--sjb-gray-300);
	flex-shrink: 0;
}

/* ---------- Preview (left, product hero) ---------- */

.sjb-preview__layout {
	display: flex;
	gap: 1rem;
}

.sjb-preview__thumbs {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
	flex: 0 0 auto;
}

.sjb-preview__thumb {
	width: 96px;
	height: 96px;
	padding: 0;
	border: 1px solid var(--sjb-gray-300);
	border-radius: 6px;
	overflow: hidden;
	background: var(--sjb-stage-bg);
	cursor: pointer;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.sjb-preview__thumb img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	opacity: 0.7;
	transition: opacity 0.15s ease;
}

.sjb-preview__thumb:hover {
	border-color: var(--sjb-navy);
}

.sjb-preview__thumb.is-active {
	border-color: var(--sjb-navy);
	box-shadow: 0 0 0 2px var(--sjb-navy);
}

.sjb-preview__thumb.is-active img {
	opacity: 1;
}

.sjb-preview__stage {
	flex: 1;
	aspect-ratio: 4 / 5;
	background: var(--sjb-stage-bg);
	border-radius: var(--sjb-radius);
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
}

.sjb-preview__stage img {
	width: 88%;
	height: 88%;
	object-fit: contain;
	border-radius: 4px;
	transition: opacity 0.25s ease;
}

.sjb-preview__stage img.is-loading {
	opacity: 0.5;
}

.sjb-preview__tabs {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin-top: 1.25rem;
}

.sjb-preview__tab {
	appearance: none;
	border: 1px solid var(--sjb-gray-300);
	background: var(--sjb-white);
	padding: 0.5rem 1.15rem;
	font-size: 0.78rem;
	font-weight: 600;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--sjb-gray-500);
	border-radius: 999px;
	cursor: pointer;
	transition: all 0.15s ease;
}

.sjb-preview__tab:hover {
	border-color: var(--sjb-navy);
	color: var(--sjb-navy);
}

.sjb-preview__tab.is-active {
	background: var(--sjb-navy);
	border-color: var(--sjb-navy);
	color: var(--sjb-white);
}

/* ---------- Steps (right, configuration) ---------- */

.sjb-step {
	margin-bottom: clamp(2.5rem, 2rem + 1.5vw, 3.75rem);
}

.sjb-step__header {
	display: flex;
	align-items: baseline;
	gap: 0.85rem;
	margin-bottom: 1.25rem;
}

.sjb-step__number {
	font-size: 1.35rem;
	font-weight: 700;
	color: var(--sjb-accent);
	font-variant-numeric: tabular-nums;
}

.sjb-step__label {
	font-size: 1.35rem;
	font-weight: 700;
	margin: 0;
	letter-spacing: 0;
}

.sjb-step__header--sub .sjb-step__label {
	font-size: 0.9rem;
	color: var(--sjb-gray-500);
	text-transform: uppercase;
	letter-spacing: 0.08em;
	font-weight: 600;
}

.sjb-step--karat {
	max-height: 0;
	opacity: 0;
	overflow: hidden;
	margin: 0 0 0 1.9rem;
	padding-left: 1rem;
	border-left: 2px solid var(--sjb-gray-300);
	transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.4s ease;
}

.sjb-step--karat.is-open {
	max-height: 220px;
	opacity: 1;
	margin: -1.25rem 0 clamp(2.5rem, 2rem + 1.5vw, 3.75rem) 1.9rem;
}

/* ---------- Options ---------- */

.sjb-options {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
}

.sjb-options--stone {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
	/*
	 * Exactly 2 slab options (PSA, Beckett) -- a plain even 2-column grid,
	 * matching the same pattern already used for stone/metal/chain at
	 * mobile widths. No wrapping math needed once there are only 2 buttons.
	 */
	.sjb-options--slab {
		display: grid;
		grid-template-columns: repeat(2, 1fr);
	}
}

.sjb-options--color {
	gap: 1.5rem;
}

.sjb-option {
	display: inline-flex;
	align-items: center;
	position: relative;
	cursor: pointer;
}

.sjb-option input[type="radio"] {
	position: absolute;
	opacity: 0;
	width: 1px;
	height: 1px;
}

.sjb-option__content {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	width: 100%;
	padding: 1.1rem 1.6rem;
	border: 1px solid var(--sjb-gray-300);
	border-radius: var(--sjb-radius);
	background: var(--sjb-white);
	font-size: 1.05rem;
	font-weight: 500;
	transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.sjb-option:hover .sjb-option__content {
	border-color: var(--sjb-black);
}

.sjb-option input:focus-visible + .sjb-option__content {
	outline: 2px solid var(--sjb-accent);
	outline-offset: 2px;
}

.sjb-option.is-selected .sjb-option__content,
.sjb-option:has(input:checked) .sjb-option__content {
	border-color: var(--sjb-accent);
	background: var(--sjb-accent-tint);
	color: var(--sjb-accent-dark);
}

/* Slab: larger, bolder "selected" treatment -- navy fill, not just an outline. */

.sjb-option--slab .sjb-option__content {
	padding: 1.35rem 1.9rem;
	font-size: 1.12rem;
	font-weight: 700;
	justify-content: center;
	min-width: 128px;
}

.sjb-option--slab.is-selected .sjb-option__content,
.sjb-option--slab:has(input:checked) .sjb-option__content {
	background: var(--sjb-navy);
	border-color: var(--sjb-navy);
	color: var(--sjb-white);
	box-shadow: inset 0 0 0 1px var(--sjb-accent);
}

/* Color: swatch-led, borderless */

.sjb-option--color .sjb-option__content {
	flex-direction: column;
	gap: 0.5rem;
	border: none;
	background: transparent;
	padding: 0.25rem;
	text-align: center;
}

.sjb-option--color:hover .sjb-option__content {
	border-color: transparent;
}

.sjb-swatch {
	display: block;
	width: 42px;
	height: 42px;
	border-radius: 50%;
	outline: 1px solid var(--sjb-gray-300);
	outline-offset: 2px;
	box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
	transition: outline-color 0.15s ease;
}

.sjb-swatch--white {
	background: linear-gradient(135deg, #f7f7f7, #c7c7c7);
}

.sjb-swatch--yellow {
	background: linear-gradient(135deg, #f5dd8a, #c69a2e);
}

.sjb-swatch--rose {
	background: linear-gradient(135deg, #f2c9c1, #c67f70);
}

.sjb-option--color.is-selected .sjb-swatch,
.sjb-option--color:has(input:checked) .sjb-swatch {
	outline: 2px solid var(--sjb-accent);
	outline-offset: 3px;
}

.sjb-option--color.is-selected .sjb-option__label,
.sjb-option--color:has(input:checked) .sjb-option__label {
	color: var(--sjb-accent-dark);
	font-weight: 600;
}

/* ---------- Summary ---------- */

.sjb-summary {
	border-top: 1px solid var(--sjb-gray-300);
	padding-top: clamp(1.5rem, 1.2rem + 1vw, 2rem);
}

.sjb-summary__title {
	font-size: 0.78rem;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sjb-gray-500);
	margin: 0 0 0.85rem;
}

.sjb-summary__line {
	font-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
	font-weight: 500;
	line-height: 1.6;
	margin: 0 0 1.85rem;
}

.sjb-summary__price {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	margin-bottom: 1.5rem;
}

.sjb-summary__price-label {
	font-size: 0.85rem;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sjb-gray-500);
}

.sjb-summary__price-value {
	font-size: clamp(2.6rem, 2rem + 2.2vw, 3.6rem);
	font-weight: 700;
}

.sjb-add-to-cart {
	width: 100%;
	padding: 1.5rem;
	background: var(--sjb-accent);
	color: var(--sjb-white);
	border: none;
	border-radius: 8px;
	font-size: 1.05rem;
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	cursor: pointer;
	box-shadow: 0 10px 28px rgba(41, 84, 255, 0.32);
	transition: background-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}

.sjb-add-to-cart:hover {
	background: var(--sjb-accent-dark);
	box-shadow: 0 8px 22px rgba(41, 84, 255, 0.32);
	transform: translateY(-1px);
}

.sjb-add-to-cart:active {
	transform: translateY(0);
}

.sjb-add-to-cart:disabled {
	background: var(--sjb-gray-500);
	box-shadow: none;
	transform: none;
	cursor: not-allowed;
}

.sjb-trust-row {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1.1rem;
	margin-top: 1.4rem;
	font-size: 0.85rem;
	color: var(--sjb-gray-500);
	letter-spacing: 0.01em;
}

.sjb-trust-row__divider {
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--sjb-gray-300);
	flex-shrink: 0;
}

.sjb-add-to-cart-message {
	margin: 0.85rem 0 0;
	font-size: 0.85rem;
	text-align: center;
	min-height: 1.2em;
}

.sjb-add-to-cart-message.is-error {
	color: #c0392b;
}

.sjb-add-to-cart-message.is-success {
	color: var(--sjb-accent);
}

.sjb-add-to-cart-link {
	color: var(--sjb-accent);
	text-decoration: underline;
	margin-left: 0.35rem;
}

/* ---------- Mobile ---------- */

@media (max-width: 767px) {
	.sjb-preview__layout {
		flex-direction: column-reverse;
	}

	.sjb-preview__thumbs {
		flex-direction: row;
		overflow-x: auto;
		-webkit-overflow-scrolling: touch;
		padding-bottom: 0.25rem;
	}

	.sjb-preview__thumb {
		flex: 0 0 56px;
		width: 56px;
		height: 56px;
	}

	.sjb-options--slab,
	.sjb-options--metal,
	.sjb-options--karat,
	.sjb-options--chainLength {
		display: grid;
		grid-template-columns: repeat(2, 1fr);
	}

	.sjb-option--slab .sjb-option__content,
	.sjb-option--metal .sjb-option__content,
	.sjb-option--karat .sjb-option__content,
	.sjb-option--chainLength .sjb-option__content {
		width: 100%;
	}
}