/**
 * DIY Kit Builder – frontend styles.
 * Two-column: left sticky summary, right step wizard. Responsive.
 *
 * @package DIY_Kit_Builder
 */

.diykb {
	--diykb-primary: #1a5f4a;
	--diykb-primary-hover: #144a3a;
	--diykb-border: #e0e0e0;
	--diykb-bg: #f8f9fa;
	--diykb-radius: 8px;
	--diykb-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
	--diykb-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, sans-serif;
	max-width: 1100px;
	margin: 0 auto 2em;
	font-family: var(--diykb-font);
	box-sizing: border-box;
}

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

.diykb__header {
	margin-bottom: 1.5em;
}

.diykb__title {
	font-size: 1.75rem;
	font-weight: 700;
	margin: 0 0 0.25em;
	color: #1a1a1a;
}

.diykb__intro {
	font-size: 1rem;
	color: #555;
	margin: 0 0 1em;
}

.diykb__progress {
	height: 8px;
	background: var(--diykb-border);
	border-radius: 4px;
	overflow: hidden;
	position: relative;
}

.diykb__progress-bar {
	height: 100%;
	width: 0;
	background: var(--diykb-primary);
	transition: width 0.3s ease;
}

.diykb__progress-text {
	position: absolute;
	right: 0;
	top: -22px;
	font-size: 0.85rem;
	color: #666;
}

.diykb__layout {
	display: grid;
	grid-template-columns: 320px 1fr;
	gap: 2rem;
	align-items: start;
}

@media (max-width: 900px) {
	.diykb__layout {
		grid-template-columns: 1fr;
	}
}

.diykb__summary-wrap {
	position: relative;
}

.diykb__summary.sticky {
	position: sticky;
	top: 24px;
}

.diykb__summary {
	background: var(--diykb-bg);
	border: 1px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	padding: 1.25rem;
	box-shadow: var(--diykb-shadow);
}

.diykb__summary-title {
	font-size: 1.1rem;
	font-weight: 700;
	margin: 0 0 1rem;
	color: #1a1a1a;
}

.diykb__summary-placeholder {
	font-size: 0.95rem;
	color: #666;
}

.diykb__summary-placeholder[hidden],
.diykb__summary-list[hidden],
.diykb__summary-quantity[hidden],
.diykb__summary-total[hidden],
.diykb__summary-actions[hidden],
.diykb__message[hidden] {
	display: none !important;
}

.diykb__summary-list {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 0.25em 1em;
	margin: 0 0 1rem;
	font-size: 0.9rem;
}

.diykb__summary-list dt {
	margin: 0;
	color: #666;
	font-weight: 500;
}

.diykb__summary-list dd {
	margin: 0;
	color: #1a1a1a;
}

.diykb__summary-quantity {
	font-size: 0.95rem;
	font-weight: 600;
	color: #333;
	margin-bottom: 0.5rem;
}

.diykb__summary-total {
	font-size: 1.1rem;
	font-weight: 700;
	margin-bottom: 1rem;
	color: var(--diykb-primary);
}

.diykb__summary-actions {
	margin-top: 0.5rem;
}

.diykb__btn {
	display: inline-block;
	padding: 0.75rem 1.5rem;
	border-radius: var(--diykb-radius);
	font-size: 1rem;
	font-weight: 600;
	font-family: inherit;
	cursor: pointer;
	transition: background 0.2s, opacity 0.2s;
	border: none;
}

.diykb__btn:disabled {
	opacity: 0.6;
	cursor: not-allowed;
}

.diykb__btn--primary {
	background: var(--diykb-primary);
	color: #fff;
	width: 100%;
}

.diykb__btn--primary:hover:not(:disabled) {
	background: var(--diykb-primary-hover);
	color: #fff;
}

.diykb__message {
	margin-top: 1rem;
	padding: 0.75rem;
	border-radius: var(--diykb-radius);
	font-size: 0.9rem;
}

.diykb__message--success {
	background: rgba(26, 95, 74, 0.1);
	color: var(--diykb-primary);
	border: 1px solid rgba(26, 95, 74, 0.3);
}

.diykb__message--success a {
	color: inherit;
	font-weight: 600;
}

.diykb__message--error {
	background: #fef2f2;
	color: #b91c1c;
	border: 1px solid #fecaca;
}

.diykb__wizard {
	min-height: 280px;
}

.diykb__step {
	animation: diykb-fade 0.25s ease;
}

.diykb__step[hidden] {
	display: none !important;
}

.diykb__step.diykb__step--active {
	display: block !important;
}

@keyframes diykb-fade {
	from { opacity: 0; transform: translateY(6px); }
	to { opacity: 1; transform: translateY(0); }
}

.diykb__step-label {
	font-size: 1rem;
	font-weight: 600;
	color: #333;
	margin: 0 0 1rem;
}

.diykb__step-sub {
	font-size: 0.95rem;
	font-weight: 600;
	color: #555;
	margin: 0 0 0.5rem;
}

.diykb__step-sub--mt {
	margin-top: 1.25rem;
}

.diykb__cards {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: 1rem;
}

.diykb__card {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	text-align: left;
	padding: 1.25rem;
	background: #fff;
	border: 2px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	box-shadow: var(--diykb-shadow);
	cursor: pointer;
	transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
	font-family: inherit;
}

.diykb__card:hover {
	border-color: var(--diykb-primary);
	box-shadow: 0 4px 12px rgba(26, 95, 74, 0.12);
	transform: translateY(-2px);
}

.diykb__card:focus {
	outline: 2px solid var(--diykb-primary);
	outline-offset: 2px;
}

.diykb__card.diykb__card--selected {
	border-color: var(--diykb-primary);
	background: rgba(26, 95, 74, 0.05);
	box-shadow: 0 4px 12px rgba(26, 95, 74, 0.18);
}

.diykb__card-title {
	font-size: 1.05rem;
	font-weight: 700;
	color: #1a1a1a;
	display: block;
	margin-bottom: 0.35em;
}

.diykb__card-subtitle {
	font-size: 0.9rem;
	color: var(--diykb-primary);
	font-weight: 600;
	display: block;
	margin-bottom: 0.35em;
}

.diykb__options {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin-bottom: 1.25rem;
}

.diykb__option {
	padding: 0.7rem 1.2rem;
	background: #fff;
	border: 2px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	font-size: 1rem;
	font-family: inherit;
	font-weight: 500;
	color: #333;
	cursor: pointer;
	transition: border-color 0.2s, background 0.2s;
}

.diykb__option:hover {
	border-color: var(--diykb-primary);
	background: rgba(26, 95, 74, 0.04);
}

.diykb__option:focus {
	outline: 2px solid var(--diykb-primary);
	outline-offset: 2px;
}

.diykb__option.diykb__option--selected {
	border-color: var(--diykb-primary);
	background: var(--diykb-primary);
	color: #fff;
}

.diykb__back {
	padding: 0.5rem 1rem;
	background: transparent;
	border: 1px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	font-size: 0.9rem;
	font-family: inherit;
	color: #666;
	cursor: pointer;
	transition: border-color 0.2s, color 0.2s;
	margin-top: 1rem;
}

.diykb__back:hover {
	border-color: var(--diykb-primary);
	color: var(--diykb-primary);
}

.diykb__hr {
	border: none;
	border-top: 1px solid var(--diykb-border);
	margin: 0.5rem 0 1rem;
}

.diykb__mesh-width-groups .diykb__width-group-label {
	font-size: 0.95rem;
	font-weight: 600;
	color: #555;
	margin: 1rem 0 0.5rem;
}

.diykb__mesh-width-groups .diykb__width-group-label:first-child {
	margin-top: 0;
}

.diykb__qty-wrap {
	margin-bottom: 1.25rem;
}

.diykb__qty-label {
	display: block;
	font-size: 0.9rem;
	font-weight: 500;
	margin-bottom: 0.35em;
	color: #333;
}

.diykb__qty-controls {
	display: flex;
	align-items: center;
	gap: 0;
	max-width: 180px;
}

.diykb__qty-btn {
	width: 44px;
	height: 44px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #fff;
	border: 2px solid var(--diykb-border);
	font-size: 1.25rem;
	font-weight: 600;
	color: #333;
	cursor: pointer;
	transition: border-color 0.2s, background 0.2s;
	font-family: inherit;
}

.diykb__qty-btn:first-child {
	border-radius: var(--diykb-radius) 0 0 var(--diykb-radius);
}

.diykb__qty-btn:last-child {
	border-radius: 0 var(--diykb-radius) var(--diykb-radius) 0;
}

.diykb__qty-btn:hover {
	border-color: var(--diykb-primary);
	background: rgba(26, 95, 74, 0.06);
	color: var(--diykb-primary);
}

.diykb__qty-input {
	width: 70px;
	height: 44px;
	padding: 0 0.5rem;
	border: 2px solid var(--diykb-border);
	border-left: none;
	border-right: none;
	font-size: 1rem;
	text-align: center;
	font-family: inherit;
}

.diykb__qty-input:focus {
	outline: none;
	border-color: var(--diykb-primary);
}

.diykb__step-actions {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	margin-top: 1.5rem;
	flex-wrap: wrap;
}

.diykb__step-actions .diykb__btn--primary {
	width: auto;
	min-width: 140px;
}

.diykb__colour-tabs {
	display: flex;
	gap: 0;
	border-bottom: 2px solid var(--diykb-border);
	margin-bottom: 1.25rem;
}

.diykb__tab {
	padding: 0.75rem 1.5rem;
	background: transparent;
	border: none;
	border-bottom: 3px solid transparent;
	margin-bottom: -2px;
	font-size: 0.95rem;
	font-weight: 600;
	font-family: inherit;
	color: #666;
	cursor: pointer;
	transition: color 0.2s, border-color 0.2s;
}

.diykb__tab:hover {
	color: var(--diykb-primary);
}

.diykb__tab.diykb__tab--active {
	color: var(--diykb-primary);
	border-bottom-color: var(--diykb-primary);
}

.diykb__colour-panels {
	margin-top: 0.5rem;
}

.diykb__colour-panel[hidden] {
	display: none !important;
}

.diykb__view-toggle {
	display: flex;
	gap: 0.5rem;
	margin-bottom: 1rem;
}

.diykb__view-btn {
	padding: 0.5rem 1rem;
	background: #fff;
	border: 2px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	font-size: 0.9rem;
	font-family: inherit;
	font-weight: 500;
	color: #555;
	cursor: pointer;
	transition: border-color 0.2s, background 0.2s;
}

.diykb__view-btn:hover {
	border-color: var(--diykb-primary);
	background: rgba(26, 95, 74, 0.04);
	color: var(--diykb-primary);
}

.diykb__view-btn.diykb__view-btn--active {
	border-color: var(--diykb-primary);
	background: var(--diykb-primary);
	color: #fff;
}

.diykb__colour-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
	gap: 1rem;
	margin-bottom: 1.25rem;
}

.diykb__colour-slider {
	display: flex;
	flex-wrap: nowrap;
	gap: 1rem;
	margin-bottom: 1.25rem;
	overflow-x: auto;
	padding-bottom: 0.5rem;
	scroll-snap-type: x mandatory;
	-webkit-overflow-scrolling: touch;
}

.diykb__colour-card,
.diykb__colour-slide {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.5rem;
	padding: 1rem;
	background: #fff;
	border: 2px solid var(--diykb-border);
	border-radius: var(--diykb-radius);
	cursor: pointer;
	transition: border-color 0.2s, box-shadow 0.2s;
	font-family: inherit;
	min-width: 100px;
}

.diykb__colour-slide {
	flex-shrink: 0;
	min-width: 90px;
	scroll-snap-align: start;
}

.diykb__colour-card:hover,
.diykb__colour-slide:hover {
	border-color: var(--diykb-primary);
	box-shadow: 0 2px 8px rgba(26, 95, 74, 0.15);
}

.diykb__colour-card.diykb__colour-card--selected,
.diykb__colour-slide.diykb__colour-card--selected {
	border-color: var(--diykb-primary);
	box-shadow: 0 0 0 3px rgba(26, 95, 74, 0.25);
}

.diykb__colour-swatch {
	width: 48px;
	height: 48px;
	border-radius: 50%;
	border: 2px solid rgba(0, 0, 0, 0.15);
	display: block;
}

.diykb__colour-label {
	font-size: 0.85rem;
	font-weight: 500;
	color: #333;
	text-align: center;
}

@media (max-width: 600px) {
	.diykb__cards {
		grid-template-columns: 1fr;
	}
	.diykb__options {
		flex-direction: column;
	}
	.diykb__option {
		width: 100%;
		text-align: center;
	}
	.diykb__colour-grid {
		grid-template-columns: repeat(2, 1fr);
	}
	.diykb__qty-controls {
		max-width: 100%;
	}
}