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

#header nav {
	margin-top: 1.5em;
}

#header nav ul {
	list-style: none;
	padding: 0;
	margin: 0;
	line-height: 1;
}

#header nav ul li {
	margin: 0.55em 0;
}

#header nav ul li a {
	font-size: 0.75em;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: rgba(255, 255, 255, 0.55);
	text-decoration: none;
	border-bottom: none;
	transition: color 0.2s ease;
}

#header nav ul li a:hover {
	color: #fff;
}

/* =============================================================
   Software Cards
   ============================================================= */

.software-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
	gap: 1.2em;
	margin: 1.5em 0 2em;
}

.software-card {
	background: #f8f9fa;
	border: 1px solid #e4e7eb;
	border-radius: 5px;
	padding: 1.1em 1.3em;
	transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.software-card:hover {
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
	border-color: #c8d0db;
}

.software-card h4 {
	margin: 0 0 0.5em;
	font-size: 0.9em;
	font-weight: 600;
}

.software-card h4 a {
	color: #333;
	text-decoration: none;
	border-bottom: none;
}

.software-card h4 a:hover {
	color: #18bfef;
}

.software-card p {
	font-size: 0.85em;
	color: #666;
	margin: 0 0 0.75em;
	line-height: 1.55;
}

.software-card .tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.3em;
}

.software-card .tags span {
	background: #e8f4fd;
	color: #2d7dd2;
	font-size: 0.72em;
	font-weight: 600;
	padding: 0.2em 0.55em;
	border-radius: 3px;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

/* =============================================================
   Abstract Toggles (add <details class="abstract"> inside any <li>)
   ============================================================= */

details.abstract {
	margin-top: 0.45em;
}

details.abstract summary {
	cursor: pointer;
	color: #aaa;
	font-size: 0.8em;
	letter-spacing: 0.07em;
	text-transform: uppercase;
	user-select: none;
	display: inline-block;
	transition: color 0.15s ease;
}

details.abstract summary:hover {
	color: #555;
}

details.abstract p {
	margin: 0.6em 0 0;
	font-size: 0.87em;
	color: #666;
	line-height: 1.65;
	border-left: 3px solid #e0e0e0;
	padding-left: 0.9em;
}

/* =============================================================
   Blog Post Layout
   ============================================================= */

.post-meta {
	color: #aaa;
	font-size: 0.85em;
	margin: -0.3em 0 1.5em;
}

.post-meta .tag {
	background: #e8f4fd;
	color: #2d7dd2;
	font-size: 0.8em;
	padding: 0.15em 0.5em;
	border-radius: 3px;
	margin-left: 0.2em;
}

.post-hero-image {
	margin-bottom: 1.8em;
}

.post-hero-image img {
	width: 100%;
	max-height: 420px;
	object-fit: cover;
	border-radius: 5px;
}

.post-content {
	line-height: 1.85;
}

.post-content img {
	max-width: 100%;
	border-radius: 4px;
	margin: 1.2em 0;
}

.post-content h3 {
	margin-top: 1.8em;
}

.post-footer-nav {
	margin-top: 2.5em;
	padding-top: 1.5em;
	border-top: 1px solid #f0f0f0;
}

/* =============================================================
   Mountaineering Blog Listing
   ============================================================= */

.post-list {
	list-style: none;
	padding: 0;
	margin: 1.5em 0 0;
}

.post-list-item {
	display: flex;
	gap: 1.5em;
	padding: 1.5em 0;
	border-bottom: 1px solid #f0f0f0;
	align-items: flex-start;
}

.post-list-item:last-child {
	border-bottom: none;
}

.post-list-thumb {
	width: 130px;
	height: 88px;
	flex-shrink: 0;
	overflow: hidden;
	border-radius: 4px;
	display: block;
}

.post-list-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: opacity 0.2s ease;
}

.post-list-thumb:hover img {
	opacity: 0.85;
}

.post-list-body h3 {
	margin: 0 0 0.25em;
	font-size: 1em;
}

.post-list-body h3 a {
	color: #333;
	text-decoration: none;
	border-bottom: none;
}

.post-list-body h3 a:hover {
	color: #18bfef;
}

.post-list-meta {
	font-size: 0.78em;
	color: #bbb;
	margin-bottom: 0.4em;
	text-transform: uppercase;
	letter-spacing: 0.06em;
}

.post-list-body p {
	font-size: 0.87em;
	color: #666;
	margin: 0;
	line-height: 1.55;
}

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

@media (max-width: 600px) {
	.post-list-item {
		flex-direction: column;
	}

	.post-list-thumb {
		width: 100%;
		height: 180px;
	}

	.software-grid {
		grid-template-columns: 1fr;
	}
}