/* Technical editorial — light systems palette, static GitHub Pages */

:root {
	--ink: #121a22;
	--ink-soft: #3a4a57;
	--muted: #667788;
	--paper: #eef2f5;
	--paper-2: #e2e8ee;
	--line: rgba(18, 26, 34, 0.12);
	--accent: #1a5f6e;
	--accent-deep: #124852;
	--highlight: #1a5f6e;
	--font-display: "Instrument Serif", Georgia, serif;
	--font-body: "DM Sans", system-ui, sans-serif;
	--max: 1080px;
	--ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--font-body);
	font-size: 1.05rem;
	line-height: 1.6;
	color: var(--ink);
	background: var(--paper);
	min-height: 100vh;
}

a {
	color: var(--accent-deep);
	text-decoration-thickness: 1px;
	text-underline-offset: 0.18em;
}

a:hover,
a:focus-visible {
	color: var(--highlight);
}

:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 3px;
}

.bg-grid {
	position: fixed;
	inset: 0;
	z-index: -1;
	pointer-events: none;
	background:
		radial-gradient(ellipse 70% 45% at 8% -5%, rgba(26, 95, 110, 0.14), transparent 55%),
		radial-gradient(ellipse 50% 35% at 95% 5%, rgba(18, 26, 34, 0.06), transparent 50%),
		linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
}

.bg-grid::after {
	content: "";
	position: absolute;
	inset: 0;
	opacity: 0.35;
	background-image:
		linear-gradient(var(--line) 1px, transparent 1px),
		linear-gradient(90deg, var(--line) 1px, transparent 1px);
	background-size: 48px 48px;
	mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 70%);
}

/* Header */
.site-header {
	position: sticky;
	top: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
	max-width: var(--max);
	margin: 0 auto;
	padding: 1rem 1.5rem;
	backdrop-filter: blur(10px);
	background: rgba(238, 242, 245, 0.88);
	border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
	border-bottom-color: var(--line);
}

.logo {
	font-family: var(--font-display);
	font-size: 1.35rem;
	font-weight: 400;
	color: var(--ink);
	text-decoration: none;
	letter-spacing: 0.01em;
}

.site-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 1.25rem;
	font-size: 0.92rem;
	font-weight: 500;
}

.site-nav a {
	color: var(--ink-soft);
	text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
	color: var(--accent);
}

.nav-toggle {
	display: none;
	width: 2.5rem;
	height: 2.5rem;
	border: 1px solid var(--line);
	background: transparent;
	cursor: pointer;
	padding: 0.65rem;
	flex-direction: column;
	justify-content: center;
	gap: 0.4rem;
}

.nav-toggle span {
	display: block;
	height: 1.5px;
	background: var(--ink);
}

.mobile-nav {
	display: none;
	flex-direction: column;
	gap: 0.85rem;
	padding: 1rem 1.5rem 1.5rem;
	background: var(--paper);
	border-bottom: 1px solid var(--line);
}

.mobile-nav:not([hidden]) {
	display: flex;
}

.mobile-nav a {
	font-weight: 500;
	color: var(--ink);
	text-decoration: none;
	font-size: 1.05rem;
}

/* Hero — one composition */
.hero {
	max-width: var(--max);
	margin: 0 auto;
	padding: clamp(3rem, 10vh, 6rem) 1.5rem clamp(4rem, 12vh, 7rem);
}

.hero-kicker {
	margin: 0 0 1rem;
	font-size: 0.8rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--accent);
}

.hero-name {
	margin: 0 0 1.25rem;
	font-family: var(--font-display);
	font-size: clamp(3.5rem, 12vw, 7rem);
	font-weight: 400;
	line-height: 0.95;
	letter-spacing: -0.02em;
	color: var(--ink);
}

.hero-lead {
	margin: 0;
	max-width: 36rem;
	font-size: clamp(1.05rem, 2.2vw, 1.25rem);
	color: var(--ink-soft);
	line-height: 1.55;
}

.hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem 1rem;
	margin-top: 2rem;
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.85rem 1.35rem;
	font-family: var(--font-body);
	font-size: 0.95rem;
	font-weight: 600;
	text-decoration: none;
	border: 1px solid transparent;
	transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn-primary {
	background: var(--accent);
	color: #f7f5f0;
}

.btn-primary:hover,
.btn-primary:focus-visible {
	background: var(--accent-deep);
	color: #fff;
}

.btn-ghost {
	background: transparent;
	border-color: var(--ink);
	color: var(--ink);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
	border-color: var(--highlight);
	color: var(--highlight);
}

.hero-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem 0.65rem;
	margin: 2.25rem 0 0;
	padding: 0;
	list-style: none;
}

.hero-tags li {
	padding: 0.35rem 0.7rem;
	font-size: 0.78rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	color: var(--ink-soft);
	border: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.45);
}

/* Sections */
.section {
	max-width: var(--max);
	margin: 0 auto;
	padding: 3.5rem 1.5rem;
}

.section-alt {
	border-block: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.35);
}

.section-head {
	margin-bottom: 2rem;
	max-width: 36rem;
}

.section-label {
	margin: 0 0 0.5rem;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--muted);
}

.section-head h2 {
	margin: 0;
	font-family: var(--font-display);
	font-size: clamp(1.85rem, 4vw, 2.6rem);
	font-weight: 400;
	line-height: 1.15;
	color: var(--ink);
}

.work-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 1.75rem 2rem;
}

.work-item h3 {
	margin: 0 0 0.45rem;
	font-size: 1.05rem;
	font-weight: 600;
	color: var(--ink);
}

.work-item p {
	margin: 0;
	color: var(--ink-soft);
	font-size: 0.98rem;
}

.project-list {
	display: flex;
	flex-direction: column;
	gap: 0;
}

.project-row {
	display: grid;
	grid-template-columns: 5rem 1fr;
	gap: 1.25rem;
	padding: 1.35rem 0;
	border-top: 1px solid var(--line);
}

.project-row:last-of-type {
	border-bottom: 1px solid var(--line);
}

.project-year {
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--accent);
	letter-spacing: 0.04em;
}

.project-row h3 {
	margin: 0 0 0.35rem;
	font-size: 1.1rem;
	font-weight: 600;
}

.project-row p {
	margin: 0;
	color: var(--ink-soft);
	font-size: 0.98rem;
}

.section-cta {
	margin: 1.75rem 0 0;
}

.section-cta a {
	font-weight: 600;
	text-decoration: none;
}

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

.highlight-list li {
	padding: 0.85rem 0;
	border-top: 1px solid var(--line);
	color: var(--ink-soft);
}

.highlight-list li:last-child {
	border-bottom: 1px solid var(--line);
}

.highlight-list strong {
	color: var(--ink);
	margin-right: 0.35rem;
}

.section-cta-block {
	padding-bottom: 4rem;
}

.cta-panel {
	padding: 2rem 1.75rem;
	border: 1px solid var(--line);
	background: rgba(15, 92, 92, 0.06);
}

.cta-panel h2 {
	margin: 0 0 0.5rem;
	font-family: var(--font-display);
	font-size: 2rem;
	font-weight: 400;
}

.cta-panel p {
	margin: 0 0 1.25rem;
	color: var(--ink-soft);
	max-width: 34rem;
}

.resume-links {
	display: flex;
	flex-wrap: wrap;
	gap: 0.65rem;
}

.resume-links a {
	display: inline-block;
	padding: 0.55rem 0.95rem;
	font-size: 0.88rem;
	font-weight: 600;
	text-decoration: none;
	color: var(--ink);
	border: 1px solid var(--ink);
	background: rgba(255, 255, 255, 0.5);
}

.resume-links a:hover,
.resume-links a:focus-visible {
	border-color: var(--accent);
	color: var(--accent);
}

/* Footer */
.site-footer {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 1.5rem;
	max-width: var(--max);
	margin: 0 auto;
	padding: 2rem 1.5rem 3rem;
	border-top: 1px solid var(--line);
}

.footer-name {
	margin: 0;
	font-family: var(--font-display);
	font-size: 1.35rem;
}

.footer-meta {
	margin: 0.25rem 0 0;
	font-size: 0.9rem;
	color: var(--muted);
}

.footer-links {
	display: flex;
	flex-wrap: wrap;
	gap: 0.85rem 1.25rem;
	align-items: center;
}

.footer-links a {
	font-size: 0.9rem;
	font-weight: 500;
	text-decoration: none;
	color: var(--ink-soft);
}

/* Motion */
.reveal {
	opacity: 0;
	transform: translateY(14px);
	transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
	opacity: 1;
	transform: none;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	.reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}
}

/* Portfolio page shares tokens */
.portfolio-page {
	min-height: 100vh;
}

.portfolio-shell {
	max-width: var(--max);
	margin: 0 auto;
	padding: 2rem 1.5rem 4rem;
}

.portfolio-back {
	display: inline-block;
	margin-bottom: 2rem;
	font-size: 0.88rem;
	font-weight: 600;
	text-decoration: none;
	color: var(--ink-soft);
}

.portfolio-eyebrow {
	margin: 0 0 0.5rem;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--accent);
}

.portfolio-hero h1 {
	margin: 0 0 1rem;
	font-family: var(--font-display);
	font-size: clamp(2.5rem, 7vw, 4rem);
	font-weight: 400;
	line-height: 1.05;
	color: var(--ink);
}

.portfolio-objective {
	margin: 0;
	max-width: 44rem;
	color: var(--ink-soft);
	font-size: 1.05rem;
}

.portfolio-contact {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem 1.25rem;
	margin-top: 1.5rem;
}

.portfolio-contact a {
	font-size: 0.88rem;
	font-weight: 600;
	text-decoration: none;
}

.portfolio-section {
	margin-top: 3rem;
	padding-top: 2rem;
	border-top: 1px solid var(--line);
}

.section-title {
	margin: 0 0 1.25rem;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--muted);
}

.role-card__head {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.5rem;
	margin-bottom: 1rem;
}

.role-card h3 {
	margin: 0;
	font-size: 1.15rem;
}

.role-card__head span {
	font-size: 0.9rem;
	color: var(--muted);
}

.role-card ul,
.achievement-list,
.pub-list,
.cert-list,
.edu-list {
	margin: 0;
	padding-left: 1.15rem;
	color: var(--ink-soft);
}

.role-card li,
.achievement-list li,
.pub-list li,
.cert-list li,
.edu-list li {
	margin: 0.45rem 0;
}

.skill-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 0.75rem;
}

.skill-group {
	padding: 0.85rem 1rem;
	font-size: 0.9rem;
	line-height: 1.45;
	border: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.4);
}

.skill-group strong {
	display: block;
	margin-bottom: 0.25rem;
	color: var(--ink);
}

.project-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 1.25rem;
}

.project-card {
	padding: 1.15rem 1.2rem;
	border: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.4);
}

.project-date {
	margin: 0 0 0.35rem;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--accent);
}

.project-card h3 {
	margin: 0 0 0.5rem;
	font-size: 1.05rem;
}

.project-card p {
	margin: 0 0 0.65rem;
	font-size: 0.95rem;
	color: var(--ink-soft);
}

.project-card a {
	font-size: 0.85rem;
	font-weight: 600;
	text-decoration: none;
}

/* Responsive */
@media screen and (max-width: 720px) {
	.site-nav {
		display: none;
	}

	.nav-toggle {
		display: flex;
	}

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

	.project-row {
		grid-template-columns: 1fr;
		gap: 0.35rem;
	}

	.hero {
		padding-top: 2.5rem;
	}
}