/* Buttons, forms, badges, alerts, cards, empty/loading states */

.nds-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--nds-space-2);
	min-height: var(--nds-touch);
	padding: 0.7rem 1.25rem;
	border-radius: var(--nds-radius-md);
	border: 1px solid transparent;
	font-family: var(--nds-font-body);
	font-weight: 600;
	font-size: var(--nds-fs-sm);
	line-height: 1.2;
	text-decoration: none;
	cursor: pointer;
	transition: background var(--nds-dur) var(--nds-ease), color var(--nds-dur) var(--nds-ease), border-color var(--nds-dur) var(--nds-ease), transform var(--nds-dur) var(--nds-ease);
}

.nds-btn:active {
	transform: translateY(1px);
}

.nds-btn--primary {
	background: var(--nds-color-teal);
	color: #fff;
}

.nds-btn--primary:hover,
.nds-btn--primary:focus-visible {
	background: var(--nds-color-teal-deep);
	color: #fff;
}

.nds-btn--secondary {
	background: transparent;
	color: var(--nds-color-ink);
	border-color: var(--nds-color-border);
}

.nds-btn--secondary:hover,
.nds-btn--secondary:focus-visible {
	border-color: var(--nds-color-ink);
	background: var(--nds-color-surface);
}

.nds-btn--ghost {
	background: transparent;
	color: var(--nds-color-teal-deep);
	padding-inline: 0.5rem;
}

.nds-badge {
	display: inline-block;
	padding: 0.2rem 0.55rem;
	border-radius: var(--nds-radius-sm);
	background: var(--nds-color-teal-soft);
	color: var(--nds-color-teal-deep);
	font-size: var(--nds-fs-xs);
	font-weight: 600;
	letter-spacing: 0.02em;
}

.nds-badge--free {
	background: #e5f3ea;
	color: var(--nds-color-success);
}

.nds-alert {
	padding: var(--nds-space-4);
	border-radius: var(--nds-radius-md);
	border: 1px solid var(--nds-color-border);
	background: var(--nds-color-surface);
}

.nds-alert--info {
	border-color: var(--nds-color-teal);
	background: var(--nds-color-teal-soft);
}

.nds-alert--error {
	border-color: var(--nds-color-danger);
	color: var(--nds-color-danger);
}

.nds-field {
	display: grid;
	gap: var(--nds-space-2);
	margin-bottom: var(--nds-space-4);
}

.nds-field label {
	font-weight: 600;
	font-size: var(--nds-fs-sm);
}

.nds-field input,
.nds-field select,
.nds-field textarea,
.woocommerce form .input-text,
.woocommerce form select {
	width: 100%;
	min-height: var(--nds-touch);
	padding: 0.65rem 0.85rem;
	border: 1px solid var(--nds-color-border);
	border-radius: var(--nds-radius-md);
	background: var(--nds-color-surface);
	font: inherit;
	color: inherit;
}

.nds-field input:focus-visible,
.nds-field select:focus-visible,
.woocommerce form .input-text:focus-visible {
	outline: 2px solid var(--nds-color-focus);
	outline-offset: 1px;
}

.nds-empty,
.nds-loading {
	padding: var(--nds-space-7) var(--nds-space-4);
	text-align: center;
	border: 1px dashed var(--nds-color-border);
	border-radius: var(--nds-radius-lg);
	background: var(--nds-color-surface);
}

.nds-card-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--nds-grid-gap);
}

@media (min-width: 640px) {
	.nds-card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
	.nds-card-grid { grid-template-columns: repeat(3, 1fr); }
}

.nds-product-card {
	display: flex;
	flex-direction: column;
	background: var(--nds-color-surface);
	border: 1px solid var(--nds-color-border);
	border-radius: var(--nds-radius-lg);
	overflow: hidden;
	box-shadow: var(--nds-shadow-sm);
	height: 100%;
	transition: transform var(--nds-dur) var(--nds-ease), box-shadow var(--nds-dur) var(--nds-ease);
}

@media (prefers-reduced-motion: no-preference) {
	.nds-product-card:hover {
		transform: translateY(-3px);
		box-shadow: var(--nds-shadow-lift);
	}
}

.nds-product-card--free {
	background: linear-gradient(180deg, #f7fbf8 0%, #fff 40%);
	border-color: #c5dfcf;
}

.nds-product-card__media {
	aspect-ratio: 3 / 4;
	background: var(--nds-color-paper-deep);
	position: relative;
	display: block;
	overflow: hidden;
}

.nds-product-card__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--nds-dur-slow) var(--nds-ease);
}

@media (prefers-reduced-motion: no-preference) {
	.nds-product-card:hover .nds-product-card__media img {
		transform: scale(1.03);
	}
}

.nds-product-card__placeholder {
	display: grid;
	place-items: center;
	height: 100%;
	color: var(--nds-color-muted);
	font-size: var(--nds-fs-sm);
	padding: var(--nds-space-4);
	text-align: center;
}

.nds-product-card__body {
	display: flex;
	flex-direction: column;
	gap: var(--nds-space-3);
	padding: var(--nds-space-4);
	flex: 1;
}

.nds-product-card__badges {
	display: flex;
	flex-wrap: wrap;
	gap: var(--nds-space-2);
	margin: 0;
}

.nds-product-card__title {
	font-family: var(--nds-font-display);
	font-size: var(--nds-fs-lg);
	font-weight: 700;
	line-height: 1.25;
	margin: 0;
}

.nds-product-card__title a {
	color: inherit;
	text-decoration: none;
}

.nds-product-card__title a:hover,
.nds-product-card__title a:focus-visible {
	color: var(--nds-color-teal-deep);
}

.nds-product-card__meta {
	display: flex;
	flex-wrap: wrap;
	gap: var(--nds-space-2);
	font-size: var(--nds-fs-xs);
	color: var(--nds-color-muted);
	margin: 0;
}

.nds-product-card__meta span + span::before {
	content: "ยท";
	margin-right: var(--nds-space-2);
	opacity: 0.6;
}

.nds-product-card__facts {
	margin: 0;
	padding: 0;
	list-style: none;
	font-size: var(--nds-fs-sm);
	color: var(--nds-color-muted);
	display: grid;
	gap: 0.25rem;
}

.nds-product-card__price {
	font-weight: 700;
	font-size: var(--nds-fs-xl);
	margin-top: auto;
	color: var(--nds-color-ink);
}

.nds-price--free {
	color: var(--nds-color-success);
}

.nds-product-card__actions {
	display: flex;
	flex-wrap: nowrap;
	gap: var(--nds-space-2);
	align-items: stretch;
}

.nds-product-card__actions .nds-btn {
	flex: 1 1 auto;
	min-width: 0;
	padding-inline: 0.75rem;
	white-space: nowrap;
}

.nds-product-card__actions .nds-btn--ghost {
	flex: 0 0 auto;
}

.nds-product-card__more {
	font-size: var(--nds-fs-xs);
	color: var(--nds-color-muted);
}

.nds-product-card__more summary {
	cursor: pointer;
	font-weight: 600;
	list-style: none;
}

.nds-product-card__more summary::-webkit-details-marker {
	display: none;
}

.nds-product-card__more[open] .nds-product-card__facts {
	margin-top: var(--nds-space-2);
}

.nds-filter-bar {
	display: grid;
	gap: var(--nds-space-3);
	padding: var(--nds-space-4);
	background: var(--nds-color-surface);
	border: 1px solid var(--nds-color-border);
	border-radius: var(--nds-radius-lg);
	margin-bottom: var(--nds-space-5);
}

.nds-field--check label {
	display: inline-flex;
	align-items: center;
	gap: var(--nds-space-2);
	font-weight: 600;
	font-size: var(--nds-fs-sm);
	cursor: pointer;
}

.nds-field--check input[type="checkbox"] {
	width: 1.15rem;
	height: 1.15rem;
	min-height: 0;
	margin: 0;
	accent-color: var(--nds-color-teal);
}

@media (min-width: 768px) {
	.nds-filter-bar {
		grid-template-columns: repeat(3, 1fr) auto;
		align-items: end;
	}

	.nds-filter-bar .nds-field--check {
		grid-column: 1 / -2;
		align-self: center;
	}
}

.nds-filter-bar select,
.nds-filter-bar input {
	min-height: var(--nds-touch);
}

/* Panel used as a whole-area link (subject tiles, resource tiles). */
.nds-panel--link {
	display: block;
	text-decoration: none;
	color: inherit;
	transition: border-color var(--nds-dur) var(--nds-ease), box-shadow var(--nds-dur) var(--nds-ease);
}

.nds-panel--link:hover,
.nds-panel--link:focus-visible {
	border-color: var(--nds-color-teal);
	box-shadow: var(--nds-shadow-md);
}

.nds-panel--link h3 {
	margin: var(--nds-space-3) 0 var(--nds-space-2);
}

.nds-panel--link p {
	margin: 0;
}

/* Vertically stacked panels. Never use adjacent-sibling margins on panels:
   they also apply inside grids and break row alignment. */
.nds-stack {
	display: grid;
	gap: var(--nds-space-4);
}

/* Spacing utilities โ€” token-bound so templates never hardcode values. */
.nds-mt-3 { margin-top: var(--nds-space-3); }
.nds-mt-4 { margin-top: var(--nds-space-4); }
.nds-mt-5 { margin-top: var(--nds-space-5); }
.nds-mb-0 { margin-bottom: 0; }
.nds-mb-5 { margin-bottom: var(--nds-space-5); }
.nds-mb-6 { margin-bottom: var(--nds-space-6); }

/* —— Micro-interactions (respect reduced motion) —— */
@media (prefers-reduced-motion: no-preference) {
	.nds-product-card {
		transition: transform var(--nds-dur) var(--nds-ease), box-shadow var(--nds-dur) var(--nds-ease);
	}
	.nds-product-card:hover,
	.nds-product-card:focus-within {
		transform: translateY(-4px);
		box-shadow: var(--nds-shadow-lift);
	}
	.nds-product-card__media img {
		transition: transform var(--nds-dur-slow) var(--nds-ease);
	}
	.nds-product-card:hover .nds-product-card__media img,
	.nds-product-card:focus-within .nds-product-card__media img {
		transform: scale(1.035);
	}
	.nds-btn {
		transition: background-color var(--nds-dur) var(--nds-ease), color var(--nds-dur) var(--nds-ease), border-color var(--nds-dur) var(--nds-ease), transform var(--nds-dur) var(--nds-ease);
	}
	.nds-btn:active {
		transform: translateY(1px);
	}
	.nds-promo,
	.nds-mid-promo__inner,
	.nds-subject-card,
	.nds-cat-tile {
		transition: transform var(--nds-dur) var(--nds-ease), box-shadow var(--nds-dur) var(--nds-ease);
	}
	.nds-promo:hover,
	.nds-mid-promo__inner:hover {
		transform: translateY(-2px);
		box-shadow: var(--nds-shadow-md);
	}
}

.nds-product-card__media {
	overflow: hidden;
}

.nds-product-card__price {
	font-weight: 800;
	letter-spacing: -0.01em;
}

.nds-product-card__title {
	font-weight: 700;
}