/* =============================================================================
   Smartio Knowledge Base — CSS
   Brand colours:
     Navy   #114676
     Blue   #4b99d3
     Teal   #7acbc0
     Gradient: linear-gradient(135deg, #4b99d3 0%, #7acbc0 100%)
   Fonts: D-DINExp (Bold for headings, Regular for body)
============================================================================= */

/* ── Root variables ─────────────────────────────────────────────────────── */
.smartio-kb {
	--skb-navy:       #114676;
	--skb-blue:       #4b99d3;
	--skb-teal:       #7acbc0;
	--skb-gradient:   linear-gradient(135deg, #4b99d3 0%, #7acbc0 100%);
	--skb-bg:         #f7fbff;
	--skb-card-bg:    #ffffff;
	--skb-border:     #e0edf8;
	--skb-text:       #1a2940;
	--skb-muted:      #6b8aaa;
	--skb-radius:     12px;
	--skb-shadow:     0 2px 16px rgba(17,70,118,.08);
	--skb-shadow-hov: 0 6px 28px rgba(17,70,118,.15);
	--skb-font-body:  'D-DINExp', 'DIN', system-ui, -apple-system, sans-serif;
	--skb-font-head:  'D-DINExp-Bold', 'D-DINExp', 'DIN', system-ui, -apple-system, sans-serif;
	font-family: var(--skb-font-body);
	color: var(--skb-text);
	box-sizing: border-box;
}
.smartio-kb *,
.smartio-kb *::before,
.smartio-kb *::after { box-sizing: inherit; }

/* ── Search ─────────────────────────────────────────────────────────────── */
.skb-search-wrap {
	margin-bottom: 2.5rem;
}
.skb-search-inner {
	position: relative;
	max-width: 620px;
	margin: 0 auto;
}
.skb-search-icon {
	position: absolute;
	left: 1rem;
	top: 50%;
	transform: translateY(-50%);
	width: 20px;
	height: 20px;
	color: var(--skb-blue);
	pointer-events: none;
}
.skb-search-input {
	width: 100%;
	padding: .85rem 2.8rem .85rem 2.8rem;
	border: 2px solid var(--skb-border);
	border-radius: 50px;
	font-size: 1rem;
	font-family: var(--skb-font-body);
	color: var(--skb-text);
	background: var(--skb-card-bg);
	transition: border-color .2s, box-shadow .2s;
	outline: none;
}
.skb-search-input:focus {
	border-color: var(--skb-blue);
	box-shadow: 0 0 0 3px rgba(75,153,211,.18);
}
.skb-search-input::placeholder { color: var(--skb-muted); }
.skb-search-clear {
	position: absolute;
	right: 1rem;
	top: 50%;
	transform: translateY(-50%);
	background: none;
	border: none;
	cursor: pointer;
	color: var(--skb-muted);
	font-size: 1rem;
	padding: 0;
	line-height: 1;
}
.skb-search-clear:hover { color: var(--skb-navy); }

/* Search results list */
.skb-search-results {
	max-width: 620px;
	margin: .75rem auto 0;
	background: var(--skb-card-bg);
	border: 1.5px solid var(--skb-border);
	border-radius: var(--skb-radius);
	overflow: hidden;
	box-shadow: var(--skb-shadow);
}
.skb-search-list {
	list-style: none;
	margin: 0;
	padding: 0;
}
.skb-search-list li {
	border-bottom: 1px solid var(--skb-border);
}
.skb-search-list li:last-child { border-bottom: none; }
.skb-search-list a {
	display: block;
	padding: .75rem 1.25rem;
	color: var(--skb-navy);
	text-decoration: none;
	font-size: .95rem;
	transition: background .15s;
}
.skb-search-list a:hover {
	background: var(--skb-bg);
	color: var(--skb-blue);
}
.skb-search-list mark {
	background: rgba(75,153,211,.2);
	color: var(--skb-navy);
	border-radius: 2px;
	padding: 0 2px;
}
.skb-no-results {
	padding: 1rem 1.25rem;
	margin: 0;
	color: var(--skb-muted);
	font-size: .95rem;
}

/* ── Category grid / list ────────────────────────────────────────────────── */
.skb-layout-grid {
	display: grid;
	gap: 1.5rem;
}
.skb-cols-3 { grid-template-columns: repeat(3, 1fr); }
.skb-cols-2 { grid-template-columns: repeat(2, 1fr); }
.skb-layout-list { display: flex; flex-direction: column; gap: 1rem; }

@media (max-width: 900px) {
	.skb-cols-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
	.skb-cols-3,
	.skb-cols-2 { grid-template-columns: 1fr; }
}

/* ── Category card ───────────────────────────────────────────────────────── */
.skb-category {
	background: var(--skb-card-bg);
	border: 1.5px solid var(--skb-border);
	border-radius: var(--skb-radius);
	overflow: hidden;
	box-shadow: var(--skb-shadow);
	transition: box-shadow .2s, transform .2s;
}
.skb-category:hover {
	box-shadow: var(--skb-shadow-hov);
}

/* Cat header */
.skb-cat-header {
	display: flex;
	align-items: center;
	gap: .75rem;
	padding: 1rem 1.25rem;
	background: var(--skb-gradient);
	cursor: pointer;
	user-select: none;
}
.skb-cat-header:focus-visible {
	outline: 3px solid var(--skb-navy);
	outline-offset: -3px;
}
.skb-cat-icon {
	flex-shrink: 0;
	width: 28px;
	height: 28px;
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
}
.skb-cat-icon svg { width: 100%; height: 100%; }
.skb-cat-name {
	flex: 1;
	font-family: var(--skb-font-head);
	font-size: 1rem;
	font-weight: 700;
	color: #fff;
	letter-spacing: .01em;
}
.skb-cat-count {
	flex-shrink: 0;
	background: rgba(255,255,255,.25);
	color: #fff;
	font-size: .75rem;
	font-weight: 700;
	padding: .15em .55em;
	border-radius: 50px;
}
.skb-chevron {
	flex-shrink: 0;
	width: 18px;
	height: 18px;
	color: #fff;
	transition: transform .25s;
}
.skb-collapsed .skb-chevron { transform: rotate(-90deg); }

/* Article list – animated collapse */
.skb-article-list {
	list-style: none;
	margin: 0;
	padding: 0;
	max-height: 1000px;
	opacity: 1;
	overflow: hidden;
	transition: max-height .3s ease, opacity .25s ease;
}
.skb-collapsed .skb-article-list {
	max-height: 0 !important;
	opacity: 0 !important;
}

/* Article row */
.skb-article-item {
	border-bottom: 1px solid var(--skb-border);
}
.skb-article-item:last-child { border-bottom: none; }
.skb-article-link {
	display: flex;
	align-items: center;
	gap: .6rem;
	padding: .7rem 1.25rem;
	color: var(--skb-navy);
	text-decoration: none;
	font-size: .9rem;
	transition: background .15s, color .15s;
}
.skb-article-link:hover {
	background: var(--skb-bg);
	color: var(--skb-blue);
}
.skb-article-icon {
	flex-shrink: 0;
	width: 14px;
	height: 14px;
	color: var(--skb-teal);
}

/* ── Inline article ──────────────────────────────────────────────────────── */
.smartio-kb-article {
	font-family: var(--skb-font-body, system-ui, sans-serif);
}
.skb-article-title {
	font-family: var(--skb-font-head, system-ui, sans-serif);
	color: var(--skb-navy, #114676);
	margin-bottom: 1rem;
}
.skb-article-content { line-height: 1.7; }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.skb-empty {
	text-align: center;
	color: #6b8aaa;
	padding: 3rem 1rem;
}