/* =============================================================
   SDEV Knowledge Base — Public Styles
   Two-panel layout: sidebar (left) + content (right)
   ============================================================= */

/* ---- CSS Custom Properties ---- */
:root {
	--skb-sidebar-width: 280px;
	--skb-sidebar-bg: #1e2229;
	--skb-sidebar-text: #cdd4de;
	--skb-sidebar-link: #9ac0f5;
	--skb-sidebar-link-hover: #ffffff;
	--skb-sidebar-active-bg: rgba(154, 192, 245, 0.12);
	--skb-sidebar-active-border: #9ac0f5;
	--skb-sidebar-section-color: #7a8796;
	--skb-content-bg: #ffffff;
	--skb-content-text: #1a1a2e;
	--skb-header-height: 0px; /* Override if your theme has a fixed header */
	--skb-transition: 240ms ease;
	--skb-border-radius: 6px;
	--skb-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ---- Full-page body reset ---- */
.skb-wiki-body {
	margin: 0;
	padding: 0;
	background: var(--skb-content-bg);
	font-family: var(--skb-font-sans);
	color: var(--skb-content-text);
}

/* ---- Wrapper: two-panel flex container ---- */
.skb-wrap {
	display: flex;
	min-height: 60vh;
	position: relative;
}

/* =============================================================
   Sidebar
   ============================================================= */

.skb-sidebar {
	width: var(--skb-sidebar-width);
	min-width: var(--skb-sidebar-width);
	background: var(--skb-sidebar-bg);
	color: var(--skb-sidebar-text);
	display: flex;
	flex-direction: column;
	overflow-y: auto;
	position: sticky;
	top: var(--skb-header-height);
	height: calc(100vh - var(--skb-header-height));
	transition: transform var(--skb-transition);
	z-index: 100;
	box-shadow: 2px 0 8px rgba(0, 0, 0, 0.25);
}

.skb-sidebar-inner {
	display: flex;
	flex-direction: column;
	height: 100%;
	overflow: hidden;
}

/* Sidebar header / logo */
.skb-sidebar-header {
	padding: 20px 18px 12px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.07);
	flex-shrink: 0;
}

.skb-logo-link {
	text-decoration: none;
	color: #ffffff;
	font-size: 1rem;
	font-weight: 700;
	letter-spacing: 0.02em;
}

.skb-logo-link:hover {
	color: var(--skb-sidebar-link);
}

/* ---- Search ---- */
.skb-search-wrap {
	padding: 12px 14px;
	position: relative;
	flex-shrink: 0;
}

.skb-search-inner {
	display: flex;
	align-items: center;
	background: rgba(255, 255, 255, 0.07);
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: var(--skb-border-radius);
	overflow: hidden;
}

.skb-search-input {
	flex: 1;
	background: transparent;
	border: none;
	outline: none;
	padding: 8px 12px;
	color: var(--skb-sidebar-text);
	font-size: 0.875rem;
	font-family: var(--skb-font-sans);
}

.skb-search-input::placeholder {
	color: rgba(205, 212, 222, 0.45);
}

.skb-search-clear {
	background: transparent;
	border: none;
	color: var(--skb-sidebar-section-color);
	cursor: pointer;
	padding: 8px 10px;
	font-size: 0.8rem;
	line-height: 1;
}

.skb-search-clear:hover {
	color: var(--skb-sidebar-text);
}

.skb-search-results {
	list-style: none;
	margin: 4px 0 0;
	padding: 0;
	background: #2a313c;
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: var(--skb-border-radius);
	overflow: hidden;
	max-height: 260px;
	overflow-y: auto;
}

.skb-search-results[hidden] {
	display: none;
}

.skb-search-results li a {
	display: block;
	padding: 9px 14px;
	color: var(--skb-sidebar-text);
	text-decoration: none;
	font-size: 0.875rem;
	border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.skb-search-results li a:hover,
.skb-search-results li a:focus {
	background: var(--skb-sidebar-active-bg);
	color: var(--skb-sidebar-link-hover);
	outline: none;
}

.skb-search-results li:last-child a {
	border-bottom: none;
}

.skb-search-no-results {
	padding: 10px 14px;
	font-size: 0.8rem;
	color: var(--skb-sidebar-section-color);
}

/* ---- Home link ---- */
.skb-home-link {
	display: block;
	margin: 8px 14px 4px;
	padding: 7px 12px;
	color: var(--skb-sidebar-link);
	text-decoration: none;
	font-size: 0.85rem;
	border-radius: var(--skb-border-radius);
	transition: background var(--skb-transition), color var(--skb-transition);
}

.skb-home-link:hover,
.skb-home-link:focus {
	background: var(--skb-sidebar-active-bg);
	color: var(--skb-sidebar-link-hover);
	outline: none;
}

/* ---- Navigation tree ---- */
.skb-nav {
	flex: 1;
	overflow-y: auto;
	padding: 8px 0 20px;
}

.skb-nav-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.skb-section {
	margin: 0;
}

/* Section header (details > summary or span) */
.skb-section-title {
	display: block;
	padding: 7px 18px 7px 16px;
	font-size: 0.7rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--skb-sidebar-section-color);
	cursor: default;
	user-select: none;
}

details.skb-section > summary.skb-section-title,
li.skb-section > details > summary.skb-section-title {
	cursor: pointer;
	list-style: none;
}

details > summary.skb-section-title::before {
	content: '▶';
	display: inline-block;
	font-size: 0.6em;
	margin-right: 6px;
	transition: transform var(--skb-transition);
	opacity: 0.6;
}

details[open] > summary.skb-section-title::before {
	transform: rotate(90deg);
}

/* Remove default details marker */
details > summary {
	list-style: none;
}
details > summary::-webkit-details-marker {
	display: none;
}

/* Article list */
.skb-article-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.skb-article-list li a {
	display: block;
	padding: 6px 18px 6px 30px;
	color: var(--skb-sidebar-link);
	text-decoration: none;
	font-size: 0.875rem;
	line-height: 1.4;
	transition: background var(--skb-transition), color var(--skb-transition);
	border-left: 2px solid transparent;
}

.skb-article-list li a:hover,
.skb-article-list li a:focus {
	background: var(--skb-sidebar-active-bg);
	color: var(--skb-sidebar-link-hover);
	border-left-color: var(--skb-sidebar-active-border);
	outline: none;
}

.skb-current-article a {
	background: var(--skb-sidebar-active-bg) !important;
	color: var(--skb-sidebar-link-hover) !important;
	border-left-color: var(--skb-sidebar-active-border) !important;
	font-weight: 600;
}

/* Nested section indentation */
.skb-nav-list .skb-nav-list .skb-section-title {
	padding-left: 28px;
}
.skb-nav-list .skb-nav-list .skb-article-list li a {
	padding-left: 42px;
}

.skb-empty {
	color: var(--skb-sidebar-section-color);
	font-size: 0.85rem;
	padding: 12px 18px;
}

/* =============================================================
   Content area
   ============================================================= */

.skb-content {
	flex: 1;
	min-width: 0;
	padding: 40px 48px;
	background: var(--skb-content-bg);
	overflow-y: auto;
}

/* Archive / home screen */
.skb-archive-home {
	max-width: 680px;
}

.skb-archive-title {
	font-size: 2rem;
	font-weight: 700;
	margin-bottom: 12px;
	color: var(--skb-content-text);
}

/* Article */
.skb-article {
	max-width: 800px;
}

.skb-article-title {
	font-size: 1.75rem;
	font-weight: 700;
	margin-bottom: 8px;
}

.skb-breadcrumb {
	display: flex;
	gap: 6px;
	margin-bottom: 24px;
	flex-wrap: wrap;
}

.skb-breadcrumb-item {
	font-size: 0.8rem;
	background: #f0f3f8;
	color: #5a6580;
	padding: 2px 9px;
	border-radius: 3px;
}

.skb-html-content {
	line-height: 1.7;
	font-size: 1rem;
}

.skb-html-content h2 { font-size: 1.35rem; margin-top: 2em; }
.skb-html-content h3 { font-size: 1.15rem; margin-top: 1.75em; }
.skb-html-content img { max-width: 100%; height: auto; border-radius: 4px; }
.skb-html-content pre { background: #f5f7fa; border-radius: 6px; padding: 16px; overflow-x: auto; }
.skb-html-content code { background: #f0f3f8; border-radius: 3px; padding: 1px 5px; font-size: 0.9em; }
.skb-html-content a { color: #2563eb; }
.skb-html-content a:hover { text-decoration: underline; }
.skb-html-content table { border-collapse: collapse; width: 100%; }
.skb-html-content th,
.skb-html-content td { border: 1px solid #dde3ec; padding: 8px 12px; }
.skb-html-content th { background: #f5f7fa; font-weight: 600; }

.skb-article-footer {
	margin-top: 40px;
	padding-top: 16px;
	border-top: 1px solid #e8ecf2;
}

.skb-last-updated {
	font-size: 0.8rem;
	color: #8a94a6;
}

/* PDF viewer */
.skb-pdf-wrap {
	width: 100%;
}

.skb-pdf-actions {
	display: flex;
	gap: 10px;
	margin-bottom: 12px;
}

.skb-pdf-btn {
	display: inline-flex;
	align-items: center;
	gap: 5px;
	padding: 6px 14px;
	border-radius: var(--skb-border-radius);
	font-size: 0.85rem;
	text-decoration: none;
	font-family: var(--skb-font-sans);
	transition: background var(--skb-transition), color var(--skb-transition);
}

.skb-btn-download {
	background: #f0f3f8;
	color: #344054;
	border: 1px solid #d0d8e8;
}
.skb-btn-download:hover {
	background: #e2e8f3;
	color: #1a1a2e;
}

.skb-btn-fullscreen {
	background: #1d4ed8;
	color: #ffffff;
	border: 1px solid transparent;
}
.skb-btn-fullscreen:hover {
	background: #1e40af;
	color: #ffffff;
}

.skb-pdf-viewer {
	width: 100%;
	height: 80vh;
	min-height: 500px;
	border: 1px solid #d0d8e8;
	border-radius: var(--skb-border-radius);
}

.skb-pdf-notes {
	margin-top: 32px;
	padding-top: 24px;
	border-top: 1px solid #e8ecf2;
}

/* Not found */
.skb-not-found h1 {
	font-size: 1.5rem;
}

/* =============================================================
   Mobile Sidebar Toggle
   ============================================================= */

.skb-sidebar-toggle {
	display: none;
	position: fixed;
	bottom: 20px;
	left: 20px;
	z-index: 200;
	background: var(--skb-sidebar-bg);
	color: #fff;
	border: none;
	border-radius: 50%;
	width: 48px;
	height: 48px;
	font-size: 1.3rem;
	cursor: pointer;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
	align-items: center;
	justify-content: center;
}

/* =============================================================
   Responsive: collapse sidebar on small screens
   ============================================================= */

@media ( max-width: 768px ) {
	.skb-wrap {
		flex-direction: column;
	}

	.skb-sidebar {
		position: fixed;
		top: 0;
		left: 0;
		height: 100vh;
		transform: translateX( -100% );
		transition: transform var(--skb-transition);
		z-index: 150;
	}

	.skb-sidebar.skb-sidebar-open {
		transform: translateX( 0 );
	}

	.skb-sidebar-toggle {
		display: flex;
	}

	.skb-content {
		padding: 24px 20px;
	}

	.skb-pdf-viewer {
		height: 60vh;
	}
}

@media ( max-width: 480px ) {
	.skb-article-title {
		font-size: 1.4rem;
	}
	.skb-content {
		padding: 16px 14px;
	}
}