/*
	Jonathan Foong — Résumé / career timeline
	Extends tokens.css + v3.css. Mobile-first, print-friendly.
*/

.resume-page {
	padding-bottom: var(--space-9);
}

/* ---------- Top bar ---------- */

.resume-topbar {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
	padding-block: var(--space-5);
}

.resume-topbar__actions {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-3);
}

.back-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
	font-size: 0.9rem;
	font-weight: 500;
	color: var(--color-text-secondary);
	transition: color var(--duration-fast) var(--ease-standard);
}

.back-link:hover { color: var(--color-text); }

.btn--sm {
	padding: 0.55rem 1.1rem;
	font-size: 0.85rem;
}

/* ---------- Résumé header ---------- */

.resume-header {
	padding-block: var(--space-7) var(--space-6);
	border-bottom: 1px solid var(--color-border);
}

.resume-header h1 {
	font-size: clamp(2.25rem, 1.6rem + 3vw, 3.75rem);
	font-weight: 700;
	line-height: var(--lh-tight);
	letter-spacing: var(--tracking-tight);
}

.resume-header__role {
	margin-top: var(--space-2);
	font-size: var(--fs-body-lg);
	color: var(--color-text-secondary);
}

.resume-contact {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2) var(--space-5);
	margin-top: var(--space-5);
	font-size: 0.88rem;
	color: var(--color-text-secondary);
}

.resume-contact a {
	color: var(--color-text-secondary);
	transition: color var(--duration-fast) var(--ease-standard);
}

.resume-contact a:hover { color: var(--color-text); }

.resume-summary {
	margin-top: var(--space-6);
	padding: var(--space-5) var(--space-6);
	border-left: 2px solid var(--color-accent);
	border-radius: 0 var(--radius-md) var(--radius-md) 0;
	background: rgba(255, 255, 255, 0.03);
	color: var(--color-text-secondary);
	font-size: var(--fs-body-lg);
	max-width: 60ch;
}

/* ---------- Timeline ---------- */

.timeline {
	--tl-marker: 15px;
	--tl-rail: 7px;
	position: relative;
	display: grid;
	gap: var(--space-8);
	margin: 0;
	padding: 0;
	list-style: none;
}

/* Static rail */
.timeline::before {
	content: "";
	position: absolute;
	top: 0.5rem;
	bottom: 0.5rem;
	left: var(--tl-rail);
	width: 2px;
	background: var(--color-border);
	border-radius: 2px;
}

/* Progress rail — full height by default so it still reads correctly without JS */
.timeline::after {
	content: "";
	position: absolute;
	top: 0.5rem;
	bottom: 0.5rem;
	left: var(--tl-rail);
	width: 2px;
	border-radius: 2px;
	background: linear-gradient(to bottom, var(--color-accent), rgba(124, 134, 240, 0.35));
	transform-origin: top center;
	transform: scaleY(var(--tl-progress, 1));
}

.timeline__item {
	position: relative;
	padding-left: calc(var(--tl-rail) * 2 + var(--space-5));
}

.timeline__marker {
	position: absolute;
	top: 0.65rem;
	left: 0;
	width: var(--tl-marker);
	height: var(--tl-marker);
	margin-left: calc(var(--tl-rail) - var(--tl-marker) / 2 + 1px);
	border-radius: 50%;
	background: var(--color-bg);
	border: 2px solid var(--color-border-strong);
	transition: border-color var(--duration-base) var(--ease-standard),
		background var(--duration-base) var(--ease-standard),
		box-shadow var(--duration-base) var(--ease-standard);
}

.timeline__item.is-visible .timeline__marker,
.timeline__item:not(.is-observing) .timeline__marker {
	background: var(--color-accent);
	border-color: var(--color-accent);
	box-shadow: 0 0 0 5px rgba(124, 134, 240, 0.14);
}

.timeline__media {
	margin: 0 0 var(--space-4);
	border-radius: var(--radius-md);
	overflow: hidden;
	border: 1px solid var(--color-border);
	background: var(--color-bg-alt);
	aspect-ratio: 16 / 10;
	max-height: 260px;
}

.timeline__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--duration-slow) var(--ease-standard);
}

.timeline__card {
	padding: var(--space-5);
	border-radius: var(--radius-lg);
	transition: transform var(--duration-base) var(--ease-standard),
		box-shadow var(--duration-base) var(--ease-standard);
}

@media (prefers-reduced-motion: no-preference) {
	.timeline__item:hover .timeline__card {
		transform: translateY(-3px);
		box-shadow: var(--shadow-lg);
	}

	.timeline__item:hover .timeline__media img {
		transform: scale(1.04);
	}
}

.timeline__org {
	display: block;
	font-size: 0.85rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	color: var(--color-accent-strong);
	margin-bottom: var(--space-2);
}

.timeline__period {
	font-family: var(--font-mono);
	font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
	font-weight: 600;
	letter-spacing: -0.02em;
	line-height: 1.15;
	color: var(--color-text);
}

.timeline__role {
	margin-top: var(--space-2);
	padding-bottom: var(--space-4);
	border-bottom: 1px solid var(--color-border);
	font-size: 1.05rem;
	font-weight: 600;
	color: var(--color-text);
}

.timeline__points {
	position: relative;
	margin-top: var(--space-4);
	display: grid;
	gap: var(--space-3);
	overflow: hidden;
	transition: max-height var(--duration-base) var(--ease-standard);
}

.timeline__points li {
	position: relative;
	padding-left: 1.15rem;
	font-size: 0.92rem;
	color: var(--color-text-secondary);
}

.timeline__points li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.62em;
	width: 5px;
	height: 5px;
	border-radius: 50%;
	background: var(--color-accent);
	opacity: 0.75;
}

/* Collapsed state is only ever applied by JS on small screens */
.timeline__points.is-collapsed {
	max-height: 7.5rem;
	-webkit-mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
	mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
}

.timeline__toggle {
	margin-top: var(--space-4);
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
	padding: 0.5rem 1rem;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-pill);
	font-size: 0.82rem;
	font-weight: 600;
	color: var(--color-text);
	transition: border-color var(--duration-fast) var(--ease-standard),
		background var(--duration-fast) var(--ease-standard);
}

.timeline__toggle:hover {
	border-color: var(--color-accent);
	background: var(--color-accent-soft);
}

.timeline__toggle::after {
	content: "";
	width: 0.45rem;
	height: 0.45rem;
	border-right: 1.5px solid currentColor;
	border-bottom: 1.5px solid currentColor;
	transform: translateY(-2px) rotate(45deg);
	transition: transform var(--duration-fast) var(--ease-standard);
}

.timeline__toggle[aria-expanded="true"]::after {
	transform: translateY(1px) rotate(-135deg);
}

/* ---------- Desktop: alternating rail ---------- */

@media (min-width: 900px) {
	.timeline {
		--tl-gutter: 3.5rem;
		gap: var(--space-9);
	}

	.timeline::before,
	.timeline::after {
		left: 50%;
		margin-left: -1px;
	}

	.timeline__item {
		display: grid;
		grid-template-columns: 1fr var(--tl-gutter) 1fr;
		align-items: center;
		padding-left: 0;
	}

	.timeline__marker {
		position: static;
		grid-column: 2;
		grid-row: 1;
		justify-self: center;
		margin-left: 0;
	}

	.timeline__media {
		grid-column: 1;
		grid-row: 1;
		margin: 0;
		aspect-ratio: 4 / 3;
		max-height: none;
	}

	.timeline__card {
		grid-column: 3;
		grid-row: 1;
	}

	.timeline__item:nth-child(even) .timeline__media {
		grid-column: 3;
	}

	.timeline__item:nth-child(even) .timeline__card {
		grid-column: 1;
	}
}

/* Directional entrance on wide screens only */
@media (min-width: 900px) and (prefers-reduced-motion: no-preference) {
	.timeline__item.is-observing {
		transform: translate3d(-22px, 12px, 0);
	}

	.timeline__item:nth-child(even).is-observing {
		transform: translate3d(22px, 12px, 0);
	}
}

.section-head-row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--space-4);
	margin-bottom: var(--space-3);
}

.section-head-row > h2 {
	margin-bottom: 0;
}

.verified-pill {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
	padding: 0.35rem 0.85rem;
	border-radius: var(--radius-pill);
	border: 1px solid rgba(124, 134, 240, 0.4);
	background: var(--color-accent-soft);
	font-size: 0.78rem;
	font-weight: 600;
	letter-spacing: 0.03em;
	color: var(--color-accent-strong);
}

.verified-pill__dot {
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: var(--color-accent);
}

@media (prefers-reduced-motion: no-preference) {
	.verified-pill__dot {
		animation: cert-pulse 2.6s var(--ease-standard) infinite;
	}
}

@keyframes cert-pulse {
	0%, 100% { box-shadow: 0 0 0 0 rgba(124, 134, 240, 0.5); }
	60% { box-shadow: 0 0 0 6px rgba(124, 134, 240, 0); }
}

.section-hint {
	margin-bottom: var(--space-6);
	font-size: 0.9rem;
	color: var(--color-text-secondary);
}

.section-hint strong {
	color: var(--color-accent-strong);
	font-weight: 600;
}

.cert-grid {
	display: grid;
	gap: var(--space-3);
	grid-template-columns: 1fr;
}

@media (min-width: 640px) {
	.cert-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
	.cert-grid { grid-template-columns: repeat(3, 1fr); }
}

.cert-card {
	display: flex;
	flex-direction: column;
	gap: var(--space-4);
	height: 100%;
	padding: var(--space-4);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	background: rgba(255, 255, 255, 0.02);
	color: inherit;
	transition: border-color var(--duration-base) var(--ease-standard),
		background var(--duration-base) var(--ease-standard),
		transform var(--duration-base) var(--ease-standard),
		box-shadow var(--duration-base) var(--ease-standard);
}

.cert-card__top {
	display: flex;
	align-items: flex-start;
	gap: var(--space-3);
}

.cert-card__seal {
	position: relative;
	flex: none;
	width: 2rem;
	height: 2rem;
	border-radius: 50%;
	border: 1px solid var(--color-border-strong);
}

/* Checkmark */
.cert-card__seal::after {
	content: "";
	position: absolute;
	top: 50%;
	left: 50%;
	width: 0.34rem;
	height: 0.62rem;
	margin: -0.36rem 0 0 -0.19rem;
	border-right: 2px solid var(--color-text-tertiary);
	border-bottom: 2px solid var(--color-text-tertiary);
	transform: rotate(45deg);
}

.cert-card--verified .cert-card__seal {
	border-color: rgba(124, 134, 240, 0.5);
	background: var(--color-accent-soft);
}

.cert-card--verified .cert-card__seal::after {
	border-color: var(--color-accent-strong);
}

.cert-card__text {
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	min-width: 0;
}

.cert-card__name {
	font-size: 0.92rem;
	font-weight: 600;
	color: var(--color-text);
	line-height: 1.35;
}

.cert-card__issuer {
	font-size: 0.78rem;
	color: var(--color-text-tertiary);
}

.cert-card__cta {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	margin-top: auto;
	padding-top: var(--space-3);
	border-top: 1px solid var(--color-border);
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: var(--tracking-eyebrow);
	text-transform: uppercase;
	color: var(--color-accent-strong);
}

.cert-card__cta::after {
	content: "→";
	font-size: 0.85rem;
	transition: transform var(--duration-base) var(--ease-standard);
}

a.cert-card:hover {
	border-color: rgba(124, 134, 240, 0.55);
	background: rgba(124, 134, 240, 0.07);
}

@media (prefers-reduced-motion: no-preference) {
	a.cert-card:hover {
		transform: translateY(-3px);
		box-shadow: var(--shadow-md);
	}

	a.cert-card:hover .cert-card__cta::after {
		transform: translateX(4px);
	}
}

/* ---------- Certificate modal ---------- */

.cert-modal {
	position: fixed;
	inset: 0;
	z-index: 200;
	display: grid;
	place-items: center;
	padding: var(--space-5);
}

.cert-modal__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(5, 6, 8, 0.72);
	opacity: 0;
	transition: opacity var(--duration-base) var(--ease-standard);
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
	.cert-modal__backdrop {
		-webkit-backdrop-filter: blur(8px);
		backdrop-filter: blur(8px);
	}
}

.cert-modal__dialog {
	position: relative;
	display: flex;
	flex-direction: column;
	width: min(940px, 100%);
	max-height: min(88vh, 940px);
	border-radius: var(--radius-lg);
	overflow: hidden;
	opacity: 0;
	transform: translateY(12px) scale(0.97);
	transition: opacity var(--duration-base) var(--ease-standard),
		transform var(--duration-base) var(--ease-standard);
}

.cert-modal.is-open .cert-modal__backdrop { opacity: 1; }

.cert-modal.is-open .cert-modal__dialog {
	opacity: 1;
	transform: none;
}

.cert-modal__head {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: var(--space-4);
	padding: var(--space-5);
	border-bottom: 1px solid var(--color-border);
}

.cert-modal__eyebrow {
	font-size: 0.7rem;
	font-weight: 700;
	letter-spacing: var(--tracking-eyebrow);
	text-transform: uppercase;
	color: var(--color-accent-strong);
	margin-bottom: var(--space-1);
}

.cert-modal__title {
	font-size: 1.15rem;
	font-weight: 600;
	line-height: 1.3;
}

.cert-modal__close {
	flex: none;
	display: grid;
	place-items: center;
	width: 2.25rem;
	height: 2.25rem;
	font-size: 1.5rem;
	line-height: 1;
	border-radius: 50%;
	border: 1px solid var(--color-border);
	color: var(--color-text-secondary);
	transition: border-color var(--duration-fast) var(--ease-standard),
		color var(--duration-fast) var(--ease-standard),
		background var(--duration-fast) var(--ease-standard);
}

.cert-modal__close:hover {
	color: var(--color-text);
	border-color: var(--color-border-strong);
	background: rgba(255, 255, 255, 0.06);
}

.cert-modal__body {
	flex: 1;
	min-height: 0;
	background: rgba(255, 255, 255, 0.04);
}

.cert-modal__frame {
	display: block;
	width: 100%;
	height: 100%;
	min-height: 55vh;
	border: 0;
	background: #22252c;
}

.cert-modal__foot {
	display: flex;
	flex-wrap: wrap;
	justify-content: flex-end;
	gap: var(--space-3);
	padding: var(--space-4) var(--space-5);
	border-top: 1px solid var(--color-border);
}

/* ---------- Supporting sections ---------- */

.resume-section {
	padding-top: var(--space-8);
}

.resume-section > h2 {
	font-size: var(--fs-h2);
	font-weight: 600;
	line-height: var(--lh-tight);
	letter-spacing: var(--tracking-tight);
	margin-bottom: var(--space-6);
}

/* ---------- Print ---------- */

@media print {
	html, body {
		background: #fff !important;
		color: #111 !important;
	}

	.atmosphere,
	.resume-topbar,
	.timeline__media,
	.timeline__marker,
	.timeline__toggle,
	.cert-card__cta,
	.verified-pill,
	.section-hint,
	.cert-modal,
	.timeline::before,
	.timeline::after {
		display: none !important;
	}

	.timeline__item {
		display: block;
		padding-left: 0;
		break-inside: avoid;
		opacity: 1 !important;
		transform: none !important;
		transition: none !important;
	}

	.timeline,
	.resume-section { gap: 1rem; }

	.timeline__card,
	.cert-card {
		padding: 0 0 1rem;
		border: none !important;
		background: none !important;
		box-shadow: none !important;
		transform: none !important;
	}

	.timeline__points.is-collapsed {
		max-height: none !important;
		-webkit-mask-image: none !important;
		mask-image: none !important;
	}

	.resume-header h1,
	.timeline__period,
	.timeline__role,
	.resume-section > h2 { color: #111 !important; }

	.timeline__org { color: #444 !important; }

	.resume-contact,
	.resume-contact a,
	.resume-summary,
	.timeline__points li,
	.cert-card__name,
	.cert-card__issuer { color: #333 !important; }

	.resume-summary {
		background: none !important;
		border-left-color: #ccc !important;
		padding-left: 1rem;
	}

	a { text-decoration: none !important; }
}