/**
 * Keyword Density Checker - Heading Structure Panel Styles
 *
 * Styles for the heading structure analysis panel including
 * visual tree view, status indicators, and issue display.
 *
 * @package AgenticWP
 */

/* ============================================
   Heading Structure Panel Container
   ============================================ */

#heading-structure-panel {
	display: flex;
	flex-direction: column;
	gap: var(--tool-space-md);
}

#heading-structure-panel .panel-title {
	font-size: var(--tool-font-lg);
	font-weight: 600;
	color: var(--tool-text);
	margin: 0 0 var(--tool-space-sm) 0;
}

/* ============================================
   Heading Tree Wrapper
   ============================================ */

.heading-tree-wrapper {
	display: flex;
	flex-direction: column;
	gap: var(--tool-space-md);
}

/* Summary badges */
.heading-summary {
	display: flex;
	flex-wrap: wrap;
	gap: var(--tool-space-xs);
}

.heading-count-badge {
	display: inline-flex;
	align-items: center;
	padding: 0.25rem 0.5rem;
	font-size: 0.6875rem;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	border-radius: var(--tool-radius-sm);
	background: var(--tool-bg-subtle);
	border: 1px solid var(--tool-border);
	color: var(--tool-text-muted);
}

.heading-count-badge.valid {
	background: var(--tool-success-bg);
	border-color: var(--tool-success);
	color: #166534;
}

.heading-count-badge.invalid {
	background: var(--tool-error-bg);
	border-color: var(--tool-error);
	color: #991b1b;
}

/* ============================================
   Heading Tree List
   ============================================ */

.heading-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.heading-item {
	display: flex;
	align-items: center;
	gap: var(--tool-space-sm);
	padding: var(--tool-space-xs) var(--tool-space-sm);
	padding-left: calc(var(--indent, 0px) + var(--tool-space-sm));
	background: var(--tool-bg-subtle);
	border-radius: var(--tool-radius-sm);
	border-left: 3px solid transparent;
	transition: background var(--tool-transition-fast),
	            border-color var(--tool-transition-fast);
}

.heading-item:hover {
	background: var(--tool-bg);
}

/* ============================================
   Heading Tag Badge
   ============================================ */

.heading-tag {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 28px;
	padding: 0.125rem 0.375rem;
	font-size: 0.6875rem;
	font-weight: 700;
	font-family: var(--tool-font-mono);
	border-radius: var(--tool-radius-xs);
	background: var(--tool-border);
	color: var(--tool-text-muted);
	text-transform: uppercase;
	flex-shrink: 0;
}

/* H1 is most prominent */
.heading-tag.tag-h1 {
	background: var(--kd-accent);
	color: #fff;
}

/* H2 slightly less prominent */
.heading-tag.tag-h2 {
	background: var(--kd-accent-light);
	color: var(--kd-accent-dark);
}

/* H3 and below get progressively lighter */
.heading-tag.tag-h3 {
	background: var(--kd-accent-bg);
	color: var(--kd-accent-dark);
	border: 1px solid var(--kd-accent-border);
}

.heading-tag.tag-h4,
.heading-tag.tag-h5,
.heading-tag.tag-h6 {
	background: var(--tool-bg);
	color: var(--tool-text-muted);
	border: 1px solid var(--tool-border);
}

/* ============================================
   Heading Text
   ============================================ */

.heading-text {
	flex: 1;
	min-width: 0;
	font-size: var(--tool-font-sm);
	color: var(--tool-text);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.heading-item--empty .heading-text {
	font-style: italic;
	color: var(--tool-text-muted);
}

/* ============================================
   Status Icons in Heading Items
   ============================================ */

.status-icon {
	flex-shrink: 0;
	width: 14px;
	height: 14px;
}

.status-icon.status-success {
	color: var(--tool-success);
}

.status-icon.status-warning {
	color: var(--tool-warning);
}

.status-icon.status-error {
	color: var(--tool-error);
}

/* ============================================
   Heading Item States
   ============================================ */

.heading-item--keyword {
	border-left-color: var(--tool-success);
	background: var(--tool-success-bg);
}

.heading-item--keyword:hover {
	background: #d1fae5;
}

.heading-item--warning {
	border-left-color: var(--tool-warning);
	background: var(--tool-warning-bg);
}

.heading-item--warning:hover {
	background: #fef3c7;
}

.heading-item--empty {
	border-left-color: var(--tool-error);
	background: var(--tool-error-bg);
}

.heading-item--empty:hover {
	background: #fecaca;
}

/* ============================================
   No Headings Message
   ============================================ */

.no-headings-message {
	font-size: var(--tool-font-sm);
	color: var(--tool-text-muted);
	text-align: center;
	padding: var(--tool-space-lg);
	margin: 0;
	background: var(--tool-bg-subtle);
	border-radius: var(--tool-radius-md);
	border: 1px dashed var(--tool-border);
}

/* ============================================
   Heading Issues Section
   ============================================ */

#heading-issues {
	margin-top: var(--tool-space-sm);
}

.issues-title {
	font-size: var(--tool-font-sm);
	font-weight: 600;
	color: var(--tool-text);
	margin: 0 0 var(--tool-space-xs) 0;
}

.issues-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--tool-space-xs);
}

.issue-item {
	display: flex;
	align-items: flex-start;
	gap: var(--tool-space-xs);
	padding: var(--tool-space-xs) var(--tool-space-sm);
	font-size: var(--tool-font-sm);
	line-height: var(--tool-line-height);
	border-radius: var(--tool-radius-sm);
	border-left: 3px solid var(--tool-border);
	background: var(--tool-bg-subtle);
}

.issue-item span {
	flex: 1;
}

.issue-icon {
	flex-shrink: 0;
	width: 14px;
	height: 14px;
	margin-top: 2px;
}

/* Issue types */
.issue-item.issue-error {
	border-left-color: var(--tool-error);
	background: var(--tool-error-bg);
	color: #991b1b;
}

.issue-item.issue-error .issue-icon {
	color: var(--tool-error);
}

.issue-item.issue-warning {
	border-left-color: var(--tool-warning);
	background: var(--tool-warning-bg);
	color: #854d0e;
}

.issue-item.issue-warning .issue-icon {
	color: var(--tool-warning);
}

.issue-item.issue-success {
	border-left-color: var(--tool-success);
	background: var(--tool-success-bg);
	color: #166534;
}

.issue-item.issue-success .issue-icon {
	color: var(--tool-success);
}

.issue-item.issue-info {
	border-left-color: var(--tool-info);
	background: var(--tool-info-bg);
	color: #1e40af;
}

.issue-item.issue-info .issue-icon {
	color: var(--tool-info);
}

/* ============================================
   Reduced Motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
	.heading-item {
		transition: none;
	}
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 680px) {
	.heading-summary {
		gap: 0.25rem;
	}

	.heading-count-badge {
		font-size: 0.625rem;
		padding: 0.125rem 0.375rem;
	}

	.heading-item {
		padding: 0.375rem var(--tool-space-xs);
		padding-left: calc(var(--indent, 0px) + var(--tool-space-xs));
		gap: var(--tool-space-xs);
	}

	.heading-tag {
		min-width: 24px;
		font-size: 0.625rem;
		padding: 0.0625rem 0.25rem;
	}

	.heading-text {
		font-size: 0.8125rem;
	}

	.issue-item {
		font-size: 0.8125rem;
	}
}