/**
 * Kids Learners — shared component system (v1)
 *
 * Reusable layout primitives and UI components for all template families.
 * Consumes kl-design-tokens.css; loaded before page-specific kl-platform.css overrides.
 *
 * @package Kids_Learners_Classic
 */

/* =============================================================================
   Layout primitives
   ============================================================================= */

.kl-container--wide {
	width: var(--kl-container-wide);
}

.kl-container--narrow {
	width: var(--kl-container-narrow);
}

.kl-container--reading {
	width: var(--kl-container-reading);
}

.kl-stack {
	display: flex;
	flex-direction: column;
	gap: var(--kl-stack-gap);
}

.kl-stack--sm {
	gap: var(--kl-space-2);
}

.kl-stack--lg {
	gap: var(--kl-space-6);
}

.kl-cluster {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--kl-space-3);
}

.kl-cluster--between {
	justify-content: space-between;
}

.kl-grid {
	display: grid;
	gap: var(--kl-grid-gap);
}

.kl-grid--2 {
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.kl-grid--3 {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.kl-grid--4 {
	grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 767px) {
	.kl-grid--2,
	.kl-grid--3,
	.kl-grid--4 {
		grid-template-columns: 1fr;
	}
}

@media (min-width: 640px) and (max-width: 1023px) {
	.kl-grid--3,
	.kl-grid--4 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.kl-main-sidebar {
	display: grid;
	gap: var(--kl-sidebar-gap);
	align-items: start;
}

@media (min-width: 1024px) {
	.kl-main-sidebar {
		grid-template-columns: minmax(0, 1fr) var(--kl-sidebar-width);
	}

	.kl-main-sidebar--wide {
		grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
	}

	.kl-main-sidebar--reverse {
		grid-template-columns: var(--kl-sidebar-width) minmax(0, 1fr);
	}
}

.kl-surface {
	background: var(--kl-surface);
	border: var(--kl-border-width) solid var(--kl-border);
	border-radius: var(--kl-radius);
}

.kl-surface--soft {
	background: var(--kl-surface-soft);
	border-color: transparent;
}

.kl-surface--muted {
	background: var(--kl-surface-muted);
	border-color: transparent;
}

.kl-surface--elevated {
	background: var(--kl-surface-elevated);
	box-shadow: var(--kl-shadow-md);
}

.kl-surface--pad {
	padding: var(--kl-space-5);
}

.kl-surface--pad-sm {
	padding: var(--kl-space-4);
}

/* =============================================================================
   Sections
   ============================================================================= */

.kl-section {
	padding-block: var(--kl-section-gap);
}

.kl-section--compact {
	padding-block: var(--kl-section-gap-sm);
}

.kl-section--flush-top {
	padding-top: 0;
}

.kl-section__head {
	margin-bottom: var(--kl-space-8);
}

.kl-section__head--row {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: var(--kl-space-4);
	flex-wrap: wrap;
}

.kl-section__title {
	margin: 0 0 var(--kl-space-3);
	font-family: var(--kl-font-display);
	font-size: clamp(1.5rem, 2.8vw, var(--kl-text-2xl));
	line-height: var(--kl-leading-snug);
	font-weight: var(--kl-weight-regular);
	letter-spacing: var(--kl-tracking-tight);
	color: var(--kl-ink);
}

.kl-section__lead {
	margin: 0;
	max-width: var(--kl-measure-comfort);
	font-size: var(--kl-text-md);
	line-height: var(--kl-leading-editorial);
	color: var(--kl-ink-muted);
}

.kl-section__action {
	flex-shrink: 0;
}

/* =============================================================================
   Buttons
   ============================================================================= */

.kl-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--kl-space-2);
	min-height: var(--kl-touch-min);
	padding: var(--kl-space-3) var(--kl-space-5);
	border-radius: var(--kl-radius-pill);
	border: var(--kl-border-width) solid transparent;
	font-family: var(--kl-font);
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-bold);
	line-height: 1.2;
	text-decoration: none;
	cursor: pointer;
	transition:
		background-color var(--kl-duration) var(--kl-ease-out),
		border-color var(--kl-duration) var(--kl-ease-out),
		color var(--kl-duration) var(--kl-ease-out),
		box-shadow var(--kl-duration) var(--kl-ease-out),
		transform var(--kl-duration) var(--kl-ease-out);
}

.kl-btn:focus-visible {
	outline: var(--kl-focus-outline);
	outline-offset: var(--kl-focus-offset);
}

.kl-btn:disabled,
.kl-btn[aria-disabled="true"] {
	opacity: 0.5;
	cursor: not-allowed;
	pointer-events: none;
}

.kl-btn--primary {
	background: var(--kl-primary);
	color: var(--kl-surface);
	box-shadow: var(--kl-shadow-md);
}

.kl-btn--primary:hover:not(:disabled) {
	background: var(--kl-primary-dark);
	box-shadow: var(--kl-shadow-md);
}

.kl-btn--ghost {
	background: var(--kl-surface);
	color: var(--kl-ink);
	border-color: var(--kl-border);
}

.kl-btn--ghost:hover:not(:disabled) {
	border-color: var(--kl-primary);
	color: var(--kl-primary);
}

.kl-btn--soft {
	background: var(--kl-primary-soft);
	color: var(--kl-primary-dark);
	border-color: transparent;
}

.kl-btn--soft:hover:not(:disabled) {
	background: color-mix(in srgb, var(--kl-primary) 12%, var(--kl-surface));
}

.kl-btn--download {
	width: 100%;
	max-width: 22rem;
}

.kl-btn--block {
	width: 100%;
	max-width: none;
}

.kl-btn--sm {
	min-height: 2.25rem;
	padding: var(--kl-space-2) var(--kl-space-4);
	font-size: var(--kl-text-xs);
}

.kl-btn--lg {
	min-height: 3rem;
	padding: var(--kl-space-4) var(--kl-space-6);
	font-size: var(--kl-text-base);
}

.kl-btn__inner {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--kl-space-2);
}

.kl-btn__inner .kl-icon {
	flex-shrink: 0;
}

.kl-btn-group {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kl-space-3);
}

.kl-btn-group--stack {
	flex-direction: column;
	align-items: stretch;
}

/* =============================================================================
   Chips & metadata
   ============================================================================= */

.kl-chip-list,
.kl-chip-grid {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kl-space-2);
}

.kl-chip {
	display: inline-flex;
	align-items: center;
	gap: var(--kl-space-2);
	padding: var(--kl-space-2) var(--kl-space-3);
	border-radius: var(--kl-radius-pill);
	border: var(--kl-border-width) solid var(--kl-border);
	background: transparent;
	color: var(--kl-ink-muted);
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-medium);
	line-height: 1.2;
	text-decoration: none;
	transition:
		border-color var(--kl-duration) var(--kl-ease-out),
		color var(--kl-duration) var(--kl-ease-out),
		background-color var(--kl-duration) var(--kl-ease-out);
}

.kl-chip:hover {
	border-color: var(--kl-border-strong);
	color: var(--kl-ink);
	background: var(--kl-surface-soft);
}

.kl-chip--primary {
	background: var(--kl-primary-soft);
	border-color: transparent;
	color: var(--kl-primary-dark);
}

.kl-chip--outline {
	background: transparent;
}

.kl-chip--filter {
	padding-right: var(--kl-space-2);
}

.kl-chip--filter .kl-chip__remove {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 1.25rem;
	height: 1.25rem;
	margin-left: var(--kl-space-1);
	border: none;
	border-radius: var(--kl-radius-pill);
	background: transparent;
	color: inherit;
	cursor: pointer;
}

.kl-chip--filter .kl-chip__remove:hover {
	background: color-mix(in srgb, var(--kl-ink) 8%, transparent);
}

.kl-chip--dot {
	padding-left: var(--kl-space-2);
}

.kl-chip__dot {
	width: 0.5rem;
	height: 0.5rem;
	border-radius: 50%;
	flex-shrink: 0;
}

.kl-chip--easy .kl-chip__dot {
	background: var(--kl-difficulty-easy);
}

.kl-chip--medium .kl-chip__dot {
	background: var(--kl-difficulty-medium);
}

.kl-chip--hard .kl-chip__dot {
	background: var(--kl-difficulty-hard);
}

.kl-chip__count {
	font-size: var(--kl-text-xs);
	font-weight: var(--kl-weight-medium);
	color: var(--kl-ink-muted);
}

.kl-meta-row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--kl-space-3);
	font-size: var(--kl-text-sm);
	color: var(--kl-ink-muted);
}

.kl-meta-row__item {
	display: inline-flex;
	align-items: center;
	gap: var(--kl-space-1);
}

.kl-meta-row__item .kl-icon {
	color: var(--kl-ink-subtle);
}

.kl-reading-meta {
	display: inline-flex;
	align-items: center;
	gap: var(--kl-space-1);
	font-size: var(--kl-text-sm);
	color: var(--kl-ink-muted);
}

/* =============================================================================
   Resource cards & grids
   ============================================================================= */

.kl-resource-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(var(--kl-grid-card-min), 1fr));
	gap: var(--kl-grid-gap-lg);
}

.kl-resource-grid--archive {
	grid-template-columns: 1fr;
	gap: var(--kl-space-6);
}

@media (min-width: 640px) {
	.kl-resource-grid--archive {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (min-width: 1024px) {
	.kl-resource-grid--archive {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

@media (min-width: 1280px) {
	.kl-resource-grid--archive {
		grid-template-columns: repeat(4, minmax(0, 1fr));
	}
}

.kl-resource-grid--compact {
	grid-template-columns: repeat(auto-fill, minmax(var(--kl-grid-card-min-compact), 1fr));
	gap: var(--kl-grid-gap);
}

.kl-resource-card {
	position: relative;
	border-radius: var(--kl-card-radius);
	background: var(--kl-surface);
	border: var(--kl-border-width) solid var(--kl-border);
	box-shadow: var(--kl-shadow);
	overflow: hidden;
	transition:
		box-shadow var(--kl-duration) var(--kl-ease-out),
		border-color var(--kl-duration) var(--kl-ease-out);
}

.kl-resource-card:hover {
	box-shadow: var(--kl-shadow-hover);
	border-color: var(--kl-border-strong);
}

.kl-resource-card__link {
	display: flex;
	flex-direction: column;
	height: 100%;
	color: inherit;
	text-decoration: none;
}

.kl-resource-card__link:focus-visible {
	outline: 2px solid color-mix(in srgb, var(--kl-primary) 65%, white);
	outline-offset: -2px;
}

.kl-resource-card__media {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	background: var(--kl-surface-muted);
}

.kl-resource-card--kl_worksheet .kl-resource-card__media {
	aspect-ratio: var(--kl-thumb-ratio-worksheet);
}

.kl-resource-card--kl_clipart .kl-resource-card__media {
	aspect-ratio: var(--kl-thumb-ratio-clipart);
	padding: var(--kl-space-3);
	background:
		linear-gradient(180deg, color-mix(in srgb, var(--kl-surface-muted) 86%, white) 0%, var(--kl-surface-muted) 100%);
}

.kl-resource-card--kl_story .kl-resource-card__media,
.kl-resource-card--kl_guide .kl-resource-card__media {
	aspect-ratio: var(--kl-thumb-ratio-story);
}

.kl-resource-card__img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.kl-resource-card--kl_clipart .kl-resource-card__img {
	width: auto;
	height: auto;
	max-width: 100%;
	max-height: 100%;
	margin: 0 auto;
}

.kl-resource-card--kl_story .kl-resource-card__img,
.kl-resource-card--kl_guide .kl-resource-card__img {
	object-fit: cover;
}

.kl-resource-card__placeholder {
	width: 100%;
	height: 100%;
	background: linear-gradient(
		145deg,
		var(--kl-surface-muted) 0%,
		var(--kl-surface-soft) 100%
	);
}

.kl-resource-card--kl_worksheet .kl-resource-card__placeholder {
	background: linear-gradient(
		145deg,
		color-mix(in srgb, var(--kl-type-worksheet) 8%, var(--kl-surface)) 0%,
		var(--kl-surface-soft) 100%
	);
}

.kl-resource-card--kl_clipart .kl-resource-card__placeholder {
	background: linear-gradient(
		145deg,
		color-mix(in srgb, var(--kl-type-clipart) 10%, var(--kl-surface)) 0%,
		var(--kl-surface-soft) 100%
	);
}

.kl-resource-card--kl_story .kl-resource-card__placeholder {
	background: linear-gradient(
		145deg,
		color-mix(in srgb, var(--kl-type-story) 10%, var(--kl-surface)) 0%,
		var(--kl-surface-soft) 100%
	);
}

.kl-resource-card--kl_guide .kl-resource-card__placeholder {
	background: linear-gradient(
		145deg,
		color-mix(in srgb, var(--kl-type-guide) 10%, var(--kl-surface)) 0%,
		var(--kl-surface-soft) 100%
	);
}

.kl-resource-card__type {
	position: absolute;
	top: var(--kl-space-2);
	left: var(--kl-space-2);
	padding: 0.2rem var(--kl-space-2);
	border-radius: var(--kl-radius-xs);
	background: rgb(255 255 255 / 0.88);
	backdrop-filter: blur(6px);
	font-size: 0.6875rem;
	font-weight: var(--kl-weight-semibold);
	text-transform: uppercase;
	letter-spacing: var(--kl-tracking-wide);
	color: var(--kl-ink-subtle);
}

.kl-resource-card__letter {
	position: absolute;
	top: var(--kl-space-2);
	right: var(--kl-space-2);
	width: 2rem;
	height: 2rem;
	display: grid;
	place-items: center;
	border-radius: var(--kl-radius-xs);
	background: var(--kl-surface);
	font-family: var(--kl-font-display);
	font-size: var(--kl-text-lg);
	font-weight: var(--kl-weight-bold);
	color: var(--kl-violet);
	box-shadow: var(--kl-shadow-xs);
}

.kl-resource-card__body {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
	padding: var(--kl-card-padding);
	flex: 1;
}

.kl-resource-card--kl_clipart .kl-resource-card__body {
	gap: var(--kl-space-1);
	padding: var(--kl-space-3) var(--kl-space-3) calc(var(--kl-space-3) + 1px);
}

.kl-resource-card__eyebrow,
.kl-resource-card__skill {
	margin: 0;
	font-size: var(--kl-text-xs);
	font-weight: var(--kl-weight-bold);
	text-transform: uppercase;
	letter-spacing: var(--kl-tracking-wide);
	color: var(--kl-ink-subtle);
}

.kl-resource-card__title {
	margin: 0;
	font-family: var(--kl-font);
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-semibold);
	line-height: var(--kl-leading-snug);
	color: var(--kl-ink);
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 3;
	overflow: hidden;
}

.kl-resource-card--kl_clipart .kl-resource-card__title {
	-webkit-line-clamp: 2;
	min-height: calc(2 * var(--kl-leading-snug) * 1em);
}

.kl-resource-card__link:hover .kl-resource-card__title {
	color: var(--kl-primary-dark);
}

.kl-resource-card__meta {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kl-space-1);
	margin-top: auto;
}

.kl-resource-card__chip {
	display: inline-flex;
	align-items: center;
	gap: var(--kl-space-1);
	padding: 0.125rem var(--kl-space-2);
	border-radius: var(--kl-radius-xs);
	border: var(--kl-border-width) solid var(--kl-border);
	background: transparent;
	font-size: 0.6875rem;
	font-weight: var(--kl-weight-medium);
	color: var(--kl-ink-subtle);
}

.kl-resource-card__chip--primary {
	font-weight: var(--kl-weight-semibold);
	color: var(--kl-ink);
	border-color: color-mix(in srgb, var(--kl-primary) 26%, var(--kl-border));
	background: color-mix(in srgb, var(--kl-primary-soft) 46%, white);
}

.kl-resource-card__chip--context {
	font-weight: var(--kl-weight-semibold);
	color: var(--kl-ink-muted);
	background: var(--kl-surface-soft);
}

.kl-resource-card__chip--technical {
	font-weight: var(--kl-weight-medium);
	color: color-mix(in srgb, var(--kl-ink-muted) 82%, #6b7280);
	border-color: color-mix(in srgb, var(--kl-border) 86%, transparent);
	background: transparent;
}

.kl-resource-card__chip--dot {
	padding-left: var(--kl-space-1);
}

.kl-resource-card__chip-dot {
	width: 0.4rem;
	height: 0.4rem;
	border-radius: 50%;
}

.kl-resource-card__chip--easy .kl-resource-card__chip-dot {
	background: var(--kl-difficulty-easy);
}

.kl-resource-card__chip--medium .kl-resource-card__chip-dot {
	background: var(--kl-difficulty-medium);
}

.kl-resource-card__chip--hard .kl-resource-card__chip-dot {
	background: var(--kl-difficulty-hard);
}

.kl-resource-card--compact .kl-resource-card__title {
	-webkit-line-clamp: 2;
}

.kl-resource-card--compact .kl-resource-card__body {
	padding: var(--kl-space-3);
}

/* =============================================================================
   Download blocks
   ============================================================================= */

.kl-download-block,
.kl-single-download {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
}

.kl-download-block__action,
.kl-single-download__action {
	margin: 0;
}

.kl-download-block__meta {
	margin: 0;
	font-size: var(--kl-text-xs);
	color: var(--kl-ink-muted);
	line-height: var(--kl-leading-normal);
}

.kl-download-block__trust,
.kl-download-subtext {
	margin: 0;
	font-size: var(--kl-text-sm);
	line-height: var(--kl-leading-normal);
	color: var(--kl-ink-muted);
}

.kl-download-block--panel {
	padding: var(--kl-space-4);
	border-radius: var(--kl-radius);
	background: var(--kl-surface-soft);
	border: var(--kl-border-width) solid var(--kl-border);
}

/* =============================================================================
   Recommendation strips
   ============================================================================= */

.kl-recommend-strip {
	padding-block: var(--kl-section-gap-sm);
}

.kl-recommend-strip + .kl-recommend-strip {
	border-top: var(--kl-border-width) solid var(--kl-border);
}

.kl-recommend-strip__head {
	margin-bottom: var(--kl-space-5);
}

.kl-recommend-strip__grid {
	margin: 0;
}

.kl-related-strip {
	border-top: var(--kl-border-width) solid var(--kl-border);
	padding-top: var(--kl-section-gap-sm);
}

/* =============================================================================
   Filters
   ============================================================================= */

.kl-filter-bar {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-4);
	margin-bottom: var(--kl-space-6);
}

.kl-filter-bar__panel {
	padding: var(--kl-space-5);
	border-radius: var(--kl-radius);
	background: var(--kl-surface);
	border: var(--kl-border-width) solid var(--kl-border);
	box-shadow: var(--kl-shadow-xs);
}

.kl-filter-bar__row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--kl-space-3);
}

.kl-filter-bar__active {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--kl-space-2);
}

.kl-filter-bar__count {
	font-size: var(--kl-text-sm);
	color: var(--kl-ink-muted);
}

.kl-filter-bar__clear {
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-semibold);
	color: var(--kl-primary);
	text-decoration: none;
}

.kl-filter-bar__clear:hover {
	text-decoration: underline;
}

.kl-filter-bar.is-loading {
	opacity: 0.65;
	pointer-events: none;
}

/* Form inputs (shared baseline) */
.kl-field {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
}

.kl-field__label {
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-semibold);
	color: var(--kl-ink);
}

.kl-field__hint {
	font-size: var(--kl-text-xs);
	color: var(--kl-ink-muted);
}

.kl-field__error {
	font-size: var(--kl-text-xs);
	color: var(--kl-error);
}

.kl-input,
.kl-textarea,
.kl-select {
	width: 100%;
	min-height: var(--kl-touch-min);
	padding: var(--kl-space-3) var(--kl-space-4);
	border: var(--kl-border-width) solid var(--kl-border);
	border-radius: var(--kl-radius-sm);
	background: var(--kl-surface);
	color: var(--kl-ink);
	font-family: var(--kl-font);
	font-size: var(--kl-text-base);
	line-height: var(--kl-leading-normal);
	transition: border-color var(--kl-duration) var(--kl-ease-out);
}

.kl-input::placeholder,
.kl-textarea::placeholder {
	color: var(--kl-ink-subtle);
}

.kl-input:focus-visible,
.kl-textarea:focus-visible,
.kl-select:focus-visible {
	outline: var(--kl-focus-outline);
	outline-offset: var(--kl-focus-offset);
	border-color: var(--kl-primary);
}

.kl-input.is-error,
.kl-textarea.is-error,
.kl-select.is-error {
	border-color: var(--kl-error);
}

.kl-textarea {
	min-height: 7.5rem;
	resize: vertical;
}

/* =============================================================================
   Empty states
   ============================================================================= */

.kl-empty {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: var(--kl-space-4);
	padding: var(--kl-space-10) var(--kl-space-6);
	text-align: center;
	border-radius: var(--kl-radius);
	background: var(--kl-surface);
	border: var(--kl-border-width) dashed var(--kl-border);
}

.kl-empty__icon {
	display: grid;
	place-items: center;
	width: 3rem;
	height: 3rem;
	border-radius: var(--kl-radius-pill);
	background: var(--kl-surface-muted);
	color: var(--kl-ink-subtle);
}

.kl-empty__icon .kl-icon {
	width: 1.5rem;
	height: 1.5rem;
}

.kl-empty__title {
	margin: 0;
	font-family: var(--kl-font);
	font-size: var(--kl-text-lg);
	font-weight: var(--kl-weight-bold);
	color: var(--kl-ink);
}

.kl-empty__message {
	margin: 0;
	max-width: 28rem;
	font-size: var(--kl-text-sm);
	line-height: var(--kl-leading-relaxed);
	color: var(--kl-ink-muted);
}

.kl-empty__actions {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--kl-space-3);
}

.kl-cart-empty {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--kl-space-4);
	width: 100%;
}

.kl-cart-empty-foot {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--kl-space-2);
	text-align: center;
}

.kl-empty--inline {
	flex-direction: row;
	align-items: flex-start;
	text-align: left;
	padding: var(--kl-space-5);
}

.kl-empty--compact {
	padding: var(--kl-space-6) var(--kl-space-4);
}

/* Legacy paragraph-only empty states */
p.kl-empty {
	display: block;
	padding: var(--kl-space-8);
	text-align: center;
}

/* =============================================================================
   Notices
   ============================================================================= */

.kl-notice {
	display: flex;
	gap: var(--kl-space-3);
	padding: var(--kl-space-4);
	border-radius: var(--kl-radius-sm);
	border: var(--kl-border-width) solid var(--kl-border);
	background: var(--kl-surface);
	font-size: var(--kl-text-sm);
	line-height: var(--kl-leading-relaxed);
	color: var(--kl-body-muted);
}

.kl-notice__icon {
	flex-shrink: 0;
	color: var(--kl-ink-subtle);
}

.kl-notice__body {
	flex: 1;
	min-width: 0;
}

.kl-notice__title {
	margin: 0 0 var(--kl-space-1);
	font-weight: var(--kl-weight-bold);
	color: var(--kl-ink);
}

.kl-notice__message {
	margin: 0;
}

.kl-notice__actions {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kl-space-2);
	margin-top: var(--kl-space-3);
}

.kl-notice--info {
	border-color: color-mix(in srgb, var(--kl-info) 25%, var(--kl-border));
	background: color-mix(in srgb, var(--kl-info) 6%, var(--kl-surface));
}

.kl-notice--success {
	border-color: color-mix(in srgb, var(--kl-success) 25%, var(--kl-border));
	background: color-mix(in srgb, var(--kl-success) 6%, var(--kl-surface));
}

.kl-notice--warning {
	border-color: color-mix(in srgb, var(--kl-warning) 25%, var(--kl-border));
	background: color-mix(in srgb, var(--kl-warning) 6%, var(--kl-surface));
}

.kl-notice--error {
	border-color: color-mix(in srgb, var(--kl-error) 25%, var(--kl-border));
	background: color-mix(in srgb, var(--kl-error) 6%, var(--kl-surface));
}

.kl-notice--edu {
	border-color: color-mix(in srgb, var(--kl-primary) 20%, var(--kl-border));
	background: var(--kl-primary-soft);
}

/* =============================================================================
   Skeletons
   ============================================================================= */

.kl-skeleton-card {
	display: flex;
	flex-direction: column;
	border-radius: var(--kl-card-radius);
	overflow: hidden;
	border: var(--kl-border-width) solid var(--kl-border);
	background: var(--kl-surface);
}

.kl-skeleton-card__media {
	aspect-ratio: var(--kl-thumb-ratio-worksheet);
}

.kl-skeleton-card__body {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
	padding: var(--kl-card-padding);
}

.kl-skeleton-line {
	height: 0.75rem;
	border-radius: var(--kl-radius-xs);
}

.kl-skeleton-line--title {
	height: 1rem;
	width: 85%;
}

.kl-skeleton-line--short {
	width: 55%;
}

.kl-skeleton-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
	gap: var(--kl-grid-gap-lg);
}

.kl-skeleton-grid--compact {
	grid-template-columns: repeat(auto-fill, minmax(8.75rem, 1fr));
	gap: var(--kl-grid-gap);
}

@media (prefers-reduced-motion: reduce) {
	.kl-skeleton,
	.kl-skeleton-line,
	.kl-skeleton-card__media {
		animation: none;
		background: var(--kl-surface-muted);
	}
}

/* =============================================================================
   Mobile systems
   ============================================================================= */

.kl-mobile-bar {
	position: fixed;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: var(--kl-z-sticky);
	display: none;
	padding: var(--kl-space-3) var(--kl-space-4);
	padding-bottom: max(var(--kl-space-3), env(safe-area-inset-bottom));
	background: rgb(255 255 255 / 0.96);
	border-top: var(--kl-border-width) solid var(--kl-border);
	box-shadow: var(--kl-shadow-sticky);
	backdrop-filter: blur(8px);
}

.kl-mobile-bar.is-visible {
	display: block;
}

.kl-mobile-bar__inner {
	display: flex;
	align-items: center;
	gap: var(--kl-space-3);
	max-width: var(--kl-container-wide);
	margin-inline: auto;
}

.kl-mobile-bar .kl-btn--download {
	margin: 0;
	max-width: none;
	flex: 1;
}

.kl-mobile-bar .kl-download-block--mobile-sticky {
	margin: 0;
	width: 100%;
	min-width: 0;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-download-block__action,
.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-block__action {
	margin: 0;
	width: 100%;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-price {
	margin: 0 0 var(--kl-space-2);
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-actions {
	display: flex;
	gap: var(--kl-space-2);
	width: 100%;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-actions .kl-btn {
	flex: 1;
	min-width: 0;
	margin: 0;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-owned {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
	width: 100%;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-owned .kl-btn {
	width: 100%;
	margin: 0;
}

.kl-mobile-bar .kl-download-block--mobile-sticky .kl-commerce-retired__label {
	margin: 0;
	text-align: center;
}

body.kl-mobile-bar-active {
	padding-bottom: calc(6.5rem + env(safe-area-inset-bottom));
}

@media (min-width: 768px) {
	.kl-mobile-bar {
		display: none !important;
	}

	body.kl-mobile-bar-active {
		padding-bottom: 0;
	}
}

.kl-touch-target {
	min-width: var(--kl-touch-min);
	min-height: var(--kl-touch-min);
}

@media (max-width: 767px) {
	.kl-hide-mobile {
		display: none !important;
	}
}

@media (min-width: 768px) {
	.kl-hide-desktop {
		display: none !important;
	}
}

/* =============================================================================
   Hub / pathway / bundle card grids (locked min-width)
   ============================================================================= */

.kl-hub-grid,
.kl-pathway-grid,
.kl-bundle-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(var(--kl-hub-grid-min), 1fr));
	gap: var(--kl-grid-gap-lg);
}

.kl-hub-grid--compact {
	grid-template-columns: repeat(auto-fill, minmax(var(--kl-hub-grid-min), 1fr));
}

.kl-letter-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(var(--kl-letter-grid-min), 1fr));
	gap: var(--kl-space-2);
}

/* =============================================================================
   Section composition types (template families)
   ============================================================================= */

.kl-section--hero {
	padding-top: var(--kl-space-8);
}

.kl-section--hero-block {
	margin-bottom: var(--kl-section-gap-sm);
}

.kl-section--edu-intro .kl-page-header__lead,
.kl-section--guidance .kl-type-body {
	max-width: var(--kl-measure-wide);
}

.kl-section--resource-grid .kl-resource-grid {
	margin-top: var(--kl-space-2);
}

.kl-section--filters .kl-filter-bar,
.kl-section--filters .kl-facets {
	margin-bottom: 0;
}

.kl-section--cta {
	padding-block: var(--kl-space-4);
}

.kl-section--trust {
	padding-block: var(--kl-space-4);
}

.kl-guidance-panel {
	max-width: var(--kl-measure-wide);
	padding: var(--kl-space-6);
	border-radius: var(--kl-radius-lg);
	background: var(--kl-surface-soft);
	border: var(--kl-border-width) solid var(--kl-border);
}

.kl-guidance-panel .kl-type-body,
.kl-guidance-panel p {
	margin: 0;
	color: var(--kl-body-muted);
	line-height: var(--kl-leading-editorial);
}

.kl-guidance-panel p + p {
	margin-top: var(--kl-space-4);
}

.kl-search-page__form {
	margin-bottom: var(--kl-section-gap-sm);
}

.kl-search-page__input {
	flex: 1;
	min-width: min(100%, 20rem);
}

.kl-search-page__group + .kl-search-page__group {
	border-top: var(--kl-border-width) solid var(--kl-border);
	padding-top: var(--kl-section-gap-sm);
}

.kl-download-panel {
	display: flex;
	flex-direction: column;
	gap: var(--kl-stack-gap);
}

.kl-single-header--reading {
	max-width: var(--kl-container-reading);
}

/* Hub & letter ecosystem pages */
.kl-authority-hub-page .kl-page-header,
.kl-letter-hub-page .kl-page-header {
	margin-bottom: var(--kl-section-gap-sm);
}

.kl-hub-section + .kl-hub-section,
.kl-letter-section + .kl-letter-section {
	border-top: var(--kl-border-width) solid var(--kl-border);
	padding-top: var(--kl-section-gap-sm);
}

.kl-section--quick-links .kl-chip-grid {
	margin-top: var(--kl-space-2);
}

.kl-hub-prose {
	max-width: 48rem;
}

.kl-letter-hero {
	align-items: center;
	gap: var(--kl-sidebar-gap);
}

.kl-letter-hero__glyph {
	margin: 0;
	font-size: clamp(3rem, 10vw, 5rem);
	line-height: 1;
	color: var(--kl-violet);
}

.kl-curriculum-strip {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--kl-space-3);
}

@media (min-width: 640px) {
	.kl-curriculum-strip {
		grid-template-columns: repeat(4, minmax(0, 1fr));
	}
}

.kl-curriculum-strip__step {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-1);
	padding: var(--kl-space-4);
	border-radius: var(--kl-radius-sm);
	background: var(--kl-surface-soft);
	border: var(--kl-border-width) solid var(--kl-border);
	font-size: var(--kl-text-sm);
}

.kl-curriculum-strip__step strong {
	color: var(--kl-ink);
	font-weight: var(--kl-weight-bold);
}

.kl-curriculum-strip__step span {
	color: var(--kl-ink-muted);
	line-height: var(--kl-leading-normal);
}

.kl-hub-cta {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: var(--kl-space-3);
}

.kl-section--pathways .kl-pathway-grid,
.kl-section--related-hubs .kl-hub-grid {
	margin-top: var(--kl-space-2);
}

/* Bundle & collection pages */
.kl-page-header--has-glyph {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: var(--kl-sidebar-gap);
	align-items: start;
}

.kl-page-header__glyph {
	margin: 0;
	color: var(--kl-violet);
}

.kl-bundle-page__body .kl-section + .kl-section,
.kl-bundle-section + .kl-bundle-section {
	border-top: var(--kl-border-width) solid var(--kl-border);
	padding-top: var(--kl-section-gap-sm);
}

.kl-bundle-overview {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--kl-space-4);
	margin: 0;
}

@media (min-width: 768px) {
	.kl-bundle-overview {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

.kl-bundle-overview__item {
	margin: 0;
}

.kl-bundle-overview__label {
	display: flex;
	align-items: center;
	gap: var(--kl-space-2);
	margin: 0 0 var(--kl-space-1);
	font-size: var(--kl-text-xs);
	font-weight: var(--kl-weight-bold);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--kl-ink-muted);
}

.kl-bundle-overview__value {
	margin: 0;
	font-size: var(--kl-text-sm);
	line-height: var(--kl-leading-normal);
	color: var(--kl-ink);
}

.kl-section--practice-order .kl-bundle-order__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
}

.kl-section--practice-order .kl-bundle-order__item {
	display: flex;
	align-items: flex-start;
	gap: var(--kl-space-3);
	padding: var(--kl-space-3);
	border-radius: var(--kl-radius-sm);
	background: var(--kl-surface-soft);
	border: var(--kl-border-width) solid var(--kl-border);
}

.kl-section--practice-order .kl-bundle-order__step {
	flex-shrink: 0;
	width: 1.75rem;
	height: 1.75rem;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 999px;
	background: var(--kl-violet);
	color: #fff;
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-bold);
}

.kl-section--practice-order .kl-bundle-order__link {
	font-weight: var(--kl-weight-bold);
	color: var(--kl-ink);
	text-decoration: none;
}

.kl-section--practice-order .kl-bundle-order__type {
	display: block;
	font-size: var(--kl-text-xs);
	color: var(--kl-ink-muted);
	margin-top: var(--kl-space-1);
}

.kl-section--related-bundles .kl-bundle-grid {
	margin-top: var(--kl-space-2);
}

/* Homepage (composed via Platform_Homepage) */
.kl-home-page .kl-section + .kl-section,
.kl-home-redesign .kl-section + .kl-section {
	border-top: var(--kl-border-width) solid var(--kl-border);
}

.kl-home-page .kl-home-hero__grid,
.kl-home-redesign .kl-home-hero__grid {
	display: grid;
	gap: var(--kl-sidebar-gap);
	align-items: center;
}

@media (min-width: 960px) {
	.kl-home-page .kl-home-hero__grid,
	.kl-home-redesign .kl-home-hero__grid {
		grid-template-columns: 1fr 1fr;
	}
}

.kl-home-page .kl-home-hero__visual,
.kl-home-redesign .kl-home-hero__visual {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--kl-space-3);
}

.kl-home-page .kl-home-hero-tile,
.kl-home-redesign .kl-home-hero-tile {
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
	padding: var(--kl-space-3);
	border-radius: var(--kl-radius-sm);
	background: var(--kl-surface-soft);
	border: var(--kl-border-width) solid var(--kl-border);
	text-decoration: none;
	color: inherit;
}

.kl-home-page .kl-home-hero-tile__img,
.kl-home-redesign .kl-home-hero-tile__img {
	width: 100%;
	height: auto;
	border-radius: var(--kl-radius-xs);
}

.kl-home-page .kl-home-hero-tile__label,
.kl-home-redesign .kl-home-hero-tile__label {
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-bold);
	line-height: var(--kl-leading-snug);
}

.kl-home-page .kl-home-search-cta__inner,
.kl-home-redesign .kl-home-search-cta__inner {
	align-items: center;
}

.kl-section--resource-grid + .kl-pagination,
.kl-discover-section--results + .kl-pagination,
.kl-archive-section--grid .kl-pagination {
	margin-top: var(--kl-space-4);
}

/* Utility & legal pages */
.kl-page-utility .kl-container,
.kl-page-404 .kl-container {
	max-width: var(--kl-container-reading);
}

.kl-utility-page .kl-section + .kl-section,
.kl-utility-section + .kl-utility-section {
	border-top: var(--kl-border-width) solid var(--kl-border);
	padding-top: var(--kl-section-gap-sm);
}

.kl-utility-list {
	margin: 0;
	padding-left: 1.25rem;
	display: flex;
	flex-direction: column;
	gap: var(--kl-space-2);
	color: var(--kl-ink);
	line-height: var(--kl-leading-normal);
}

.kl-reading-content {
	max-width: none;
}

.kl-page-404 .kl-empty {
	margin-top: var(--kl-space-2);
}

.kl-site-footer__trust {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kl-space-3);
	margin-bottom: var(--kl-space-2);
}

.kl-site-footer__trust a {
	color: rgba(255, 255, 255, 0.85);
	text-decoration: none;
	font-size: var(--kl-text-sm);
	font-weight: var(--kl-weight-bold);
}

.kl-site-footer__trust a:hover {
	color: #fff;
}