/* ══════════════════════════════
   ARCHITECTURE PAGE
═════════════════════════════ */

.arch-hero {
	position: relative;
	z-index: 2;
	padding: 150px 2rem 4rem;
}

.arch-title {
	font-family: "Plus Jakarta Sans", sans-serif;
	font-size: clamp(2.2rem, 4vw, 3.4rem);
	font-weight: 800;
	letter-spacing: -0.03em;
	line-height: 1.05;
	margin: 0.9rem 0 1.2rem;
}

.arch-title .grad {
	background: linear-gradient(125deg, #22d3ee 0%, #06b6d4 40%, #06b6d4 80%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.arch-lede {
	max-width: 44rem;
}

/* ── Architecture diagrams ── */
.diagram-frame {
	margin-top: 3rem;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--r);
	padding: 1.25rem;
	overflow-x: auto;
}

.diagram-frame img {
	display: block;
	width: 100%;
	height: auto;
	min-width: 640px;
	border-radius: var(--r-sm);
}

/* ── Dependency graph ── */
.dep-graph {
	margin-top: 3rem;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 1.4rem;
}

.dep-row {
	display: flex;
	gap: 1rem;
	justify-content: center;
	flex-wrap: wrap;
}

.dep-node {
	font-family: "JetBrains Mono", monospace;
	font-size: 0.85rem;
	font-weight: 600;
	padding: 0.7rem 1.4rem;
	border-radius: var(--r-sm);
	border: 1px solid var(--border-hi);
	background: var(--surface-hi);
	color: var(--text);
}

.dep-tui {
	border-color: rgba(139, 92, 246, 0.5);
	color: #8b5cf6;
}
.dep-coding {
	border-color: rgba(86, 211, 100, 0.5);
	color: #56d364;
}
.dep-cap {
	border-color: rgba(210, 153, 34, 0.5);
	color: #22d3ee;
}
.dep-core {
	border-color: rgba(88, 166, 255, 0.5);
	color: #58a6ff;
}

.dep-list {
	margin-top: 2.2rem;
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 0.9rem;
	max-width: 46rem;
}

.dep-list li {
	position: relative;
	padding-left: 1.4rem;
	font-size: 0.92rem;
	color: var(--muted);
	line-height: 1.7;
}

.dep-list li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.55em;
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background: var(--violet);
}

.dep-list code {
	color: #22d3ee;
	font-size: 0.86em;
}

/* ── Package cards ── */
.pkg-grid {
	margin-top: 3rem;
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1.1rem;
}

.pkg-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--r);
	padding: 1.6rem 1.7rem;
	position: relative;
	overflow: hidden;
}

.pkg-card::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 2px;
	background: var(--accent);
	opacity: 0.7;
}

.pkg-card-wide {
	grid-column: 1 / -1;
}

.pkg-head {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	margin-bottom: 0.7rem;
}

.pkg-dot {
	width: 9px;
	height: 9px;
	border-radius: 50%;
	background: var(--accent);
	box-shadow: 0 0 8px var(--accent);
	flex-shrink: 0;
}

.pkg-name {
	font-family: "JetBrains Mono", monospace;
	font-size: 0.86rem;
	font-weight: 600;
	color: var(--text);
}

.pkg-desc {
	font-size: 0.87rem;
	color: var(--muted);
	line-height: 1.7;
	margin-bottom: 1.1rem;
}

.pkg-facts {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
}

.pkg-facts-cols {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 0.65rem 1.5rem;
}

.pkg-facts li {
	position: relative;
	padding-left: 1.2rem;
	font-size: 0.83rem;
	color: var(--muted);
	line-height: 1.65;
}

.pkg-facts li::before {
	content: "›";
	position: absolute;
	left: 0;
	color: var(--accent);
	font-weight: 700;
}

.pkg-facts code {
	color: #22d3ee;
	font-size: 0.92em;
}

/* ── External surfaces ── */
.ext-grid {
	margin-top: 3rem;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 1px;
	background: var(--border);
	border: 1px solid var(--border);
	border-radius: var(--r);
	overflow: hidden;
}

.ext-card {
	padding: 1.7rem 1.4rem;
	background: var(--surface);
	transition: background 0.2s;
}

.ext-card:hover {
	background: var(--surface-hi);
}

.ext-title {
	font-family: "Plus Jakarta Sans", sans-serif;
	font-weight: 700;
	font-size: 0.95rem;
	color: var(--text);
	margin-bottom: 0.5rem;
}

.ext-sub {
	font-size: 0.8rem;
	color: var(--muted);
	line-height: 1.65;
}

.ext-sub code {
	color: #22d3ee;
	font-size: 0.92em;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
	.pkg-grid {
		grid-template-columns: 1fr;
	}

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

@media (max-width: 640px) {
	.arch-hero {
		padding: 120px 1.25rem 3rem;
	}

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

	.pkg-facts-cols {
		grid-template-columns: 1fr;
	}

	.dep-row {
		flex-direction: column;
		align-items: center;
	}
}