/* ══════════════════════════════════════════════════════════════
   Zhanchao Yang — Professional Work
   Two registers on one page:
     · Planning Books  → editorial, document-first, restrained
     · Civic Apps      → screen-first, framed like software
   Shares the tokens, nav, buttons and footer defined in home.css.
══════════════════════════════════════════════════════════════ */

body.pro {
	background: var(--bg);
	color: var(--ink);
	font-family: var(--sans);
	font-size: 16px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}

/* A faint drafting grid: the paper this page is laid out on. */
body.pro::before {
	content: '';
	position: fixed;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background-image:
		linear-gradient(var(--line-soft) 1px, transparent 1px),
		linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
		radial-gradient(circle at 12% 8%, rgba(217, 197, 165, 0.34), transparent 46%),
		radial-gradient(circle at 88% 4%, rgba(128, 153, 181, 0.18), transparent 42%);
	background-size: 64px 64px, 64px 64px, auto, auto;
	-webkit-mask-image: linear-gradient(180deg, #000 0%, #000 62%, transparent 100%);
	mask-image: linear-gradient(180deg, #000 0%, #000 62%, transparent 100%);
}
body.pro > main,
body.pro > section,
body.pro > footer {
	position: relative;
	z-index: 1;
}
body.pro [id] {
	scroll-margin-top: 96px;
}

/* .btn-outline is defined alongside the research hub; the same
   secondary button is used here without pulling in that stylesheet. */
.btn-outline {
	display: inline-flex;
	align-items: center;
	gap: 9px;
	font-size: 0.9rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	color: var(--ink);
	text-decoration: none;
	border: 1px solid var(--line);
	border-radius: 3px;
	padding: 13px 24px;
	background: rgba(255, 255, 255, 0.6);
	transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.btn-outline:hover {
	color: var(--red);
	border-color: var(--red);
	transform: translateY(-1px);
}

/* ── Hero ─────────────────────────────────────────────────── */
.pw-hero {
	padding: 168px 0 76px;
}
.pw-hero-inner {
	display: grid;
	grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
	gap: 56px;
	align-items: center;
}
.pw-hero-eyebrow {
	font-size: 0.76rem;
	font-weight: 600;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--red);
	margin-bottom: 18px;
	display: flex;
	align-items: center;
	gap: 12px;
}
.pw-hero-eyebrow::before {
	content: '';
	width: 26px;
	height: 1.5px;
	background: var(--red);
}
.pw-hero h1 {
	font-family: var(--serif);
	font-size: clamp(2.2rem, 5vw, 3.4rem);
	font-weight: 600;
	line-height: 1.1;
	letter-spacing: -0.015em;
	margin-bottom: 22px;
}
.pw-hero h1 em {
	font-style: italic;
	color: var(--red);
}
.pw-hero-statement {
	font-family: var(--serif);
	font-size: 1.2rem;
	line-height: 1.55;
	color: var(--ink);
	max-width: 46ch;
	margin-bottom: 14px;
}
.pw-hero-sub {
	font-size: 0.98rem;
	color: var(--ink-soft);
	max-width: 52ch;
	margin-bottom: 30px;
}
.pw-hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin-bottom: 28px;
}
.pw-hero-meta {
	font-size: 0.8rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--ink-faint);
}
.pw-hero-meta .dot {
	color: var(--sand-deep);
	margin: 0 4px;
}
.pw-hero-art svg {
	width: 100%;
	height: auto;
	display: block;
}

/* the browser frame in the hero drawing blinks its cursor once,
   slowly, so the drawing reads as software rather than a diagram */
.pw-art-caret {
	animation: pw-caret 2.6s ease-in-out infinite;
}
@keyframes pw-caret {
	0%, 44% { opacity: 1; }
	52%, 92% { opacity: 0.15; }
	100% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
	.pw-art-caret { animation: none; }
}

/* ── Shared section chrome ────────────────────────────────── */
.pw-section {
	padding: 68px 0 84px;
}
.pw-section-head {
	max-width: 720px;
	margin-bottom: 44px;
}

/* ══ Planning Books ══════════════════════════════════════════
   Document register: paper-white cards, a ruled spine on the
   left edge, generous margins, almost no motion.
══════════════════════════════════════════════════════════════ */
.pw-books {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 34px;
}
.pw-book {
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 4px;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	position: relative;
	transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
		box-shadow 0.4s ease, border-color 0.4s ease;
}
/* the spine */
.pw-book::before {
	content: '';
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	width: 4px;
	background: var(--accent, var(--blue-soft));
	z-index: 2;
}
.pw-book:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-lift);
	border-color: rgba(11, 35, 69, 0.2);
}
.pw-book-cover {
	position: relative;
	overflow: hidden;
	background: var(--surface-warm);
	aspect-ratio: 16 / 10;
}
.pw-book-cover img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.pw-book:hover .pw-book-cover img {
	transform: scale(1.035);
}
.pw-book-format {
	position: absolute;
	top: 14px;
	left: 18px;
	z-index: 2;
	font-size: 0.66rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--ink);
	background: rgba(255, 255, 255, 0.92);
	border: 1px solid var(--line);
	border-radius: 2px;
	padding: 5px 10px;
}
.pw-book-body {
	padding: 26px 30px 30px;
	display: flex;
	flex-direction: column;
	flex: 1;
}
.pw-book-meta {
	font-size: 0.74rem;
	font-weight: 600;
	letter-spacing: 0.13em;
	text-transform: uppercase;
	color: var(--ink-faint);
	margin-bottom: 12px;
}
.pw-book-meta .dot {
	color: var(--sand-deep);
	margin: 0 5px;
}
.pw-book h3 {
	font-family: var(--serif);
	font-size: 1.42rem;
	font-weight: 600;
	line-height: 1.24;
	letter-spacing: -0.01em;
	margin-bottom: 6px;
}
.pw-book-sub {
	font-family: var(--serif);
	font-style: italic;
	font-size: 1rem;
	color: var(--ink-soft);
	margin-bottom: 16px;
}
.pw-book p.pw-book-desc {
	font-size: 0.93rem;
	color: var(--ink-soft);
	margin-bottom: 18px;
}
.pw-role {
	font-size: 0.84rem;
	color: var(--ink-soft);
	border-left: 2px solid var(--sand-deep);
	padding-left: 12px;
	margin-bottom: 20px;
}
.pw-role strong {
	color: var(--ink);
	font-weight: 600;
}
.pw-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 24px;
}
.pw-tags span {
	font-size: 0.72rem;
	letter-spacing: 0.04em;
	color: var(--ink-soft);
	background: var(--surface-warm);
	border: 1px solid var(--line-soft);
	border-radius: 100px;
	padding: 5px 12px;
}
.pw-book-actions {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 18px;
	margin-top: auto;
}
.pw-cta {
	display: inline-flex;
	align-items: center;
	gap: 9px;
	font-size: 0.9rem;
	font-weight: 600;
	letter-spacing: 0.02em;
	color: var(--ink);
	text-decoration: none;
	border-bottom: 1.5px solid var(--line);
	padding-bottom: 3px;
	transition: color 0.25s ease, border-color 0.25s ease;
}
.pw-cta .arrow {
	transition: transform 0.3s ease;
}
.pw-book:hover .pw-cta,
.pw-cta:hover {
	color: var(--red);
	border-color: var(--red);
}
.pw-book:hover .pw-cta .arrow,
.pw-cta:hover .arrow {
	transform: translateX(4px);
}
.pw-note {
	font-size: 0.76rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--ink-faint);
}

/* ══ Civic Apps ══════════════════════════════════════════════
   Screen register: each card is a browser window, the screenshot
   fills it, chrome and a live-looking URL bar sit on top.
══════════════════════════════════════════════════════════════ */
.pw-apps {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 30px;
}
.pw-app {
	display: flex;
	flex-direction: column;
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 8px;
	overflow: hidden;
	transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
		box-shadow 0.35s ease, border-color 0.35s ease;
}
.pw-app:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-lift);
	border-color: rgba(11, 35, 69, 0.2);
}
.pw-win {
	display: block;
	background: #eae6de;
	border-bottom: 1px solid var(--line-soft);
	text-decoration: none;
	position: relative;
}
.pw-win-bar {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 9px 14px;
}
.pw-dots {
	display: flex;
	gap: 6px;
	flex: none;
}
.pw-dots i {
	width: 9px;
	height: 9px;
	border-radius: 50%;
	background: rgba(11, 35, 69, 0.16);
	display: block;
}
.pw-url {
	flex: 1;
	min-width: 0;
	background: rgba(255, 255, 255, 0.86);
	border-radius: 100px;
	font-size: 0.7rem;
	letter-spacing: 0.01em;
	color: var(--ink-faint);
	padding: 4px 12px;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}
.pw-shot {
	position: relative;
	overflow: hidden;
	aspect-ratio: 16 / 10;
	background: var(--surface-warm);
}
.pw-shot img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: top center;
	display: block;
	transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.pw-app:hover .pw-shot img {
	transform: scale(1.03);
}
/* "Launch demo" veil, revealed on hover / keyboard focus */
.pw-veil {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(
		180deg,
		rgba(11, 35, 69, 0.06),
		rgba(11, 35, 69, 0.52)
	);
	opacity: 0;
	transition: opacity 0.35s ease;
}
.pw-veil span {
	font-size: 0.82rem;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: #fdfcf9;
	border: 1.5px solid rgba(253, 252, 249, 0.7);
	border-radius: 3px;
	padding: 11px 22px;
	transform: translateY(8px);
	transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.pw-app:hover .pw-veil,
.pw-win:focus-visible .pw-veil {
	opacity: 1;
}
.pw-app:hover .pw-veil span,
.pw-win:focus-visible .pw-veil span {
	transform: none;
}
@media (prefers-reduced-motion: reduce) {
	.pw-app:hover,
	.pw-book:hover { transform: none; }
	.pw-app:hover .pw-shot img,
	.pw-book:hover .pw-book-cover img { transform: none; }
	.pw-veil span { transform: none; }
}

.pw-app-body {
	padding: 24px 26px 28px;
	display: flex;
	flex-direction: column;
	flex: 1;
}
.pw-app-cat {
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--accent, var(--blue));
	margin-bottom: 10px;
}
.pw-app h3 {
	font-family: var(--serif);
	font-size: 1.24rem;
	font-weight: 600;
	line-height: 1.3;
	margin-bottom: 10px;
	display: flex;
	align-items: baseline;
	flex-wrap: wrap;
	gap: 10px;
}
.pw-archived {
	font-family: var(--sans);
	font-size: 0.64rem;
	font-weight: 600;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--ink-faint);
	border: 1px solid var(--line);
	border-radius: 2px;
	padding: 2px 7px;
	position: relative;
	top: -2px;
}
.pw-app p {
	font-size: 0.91rem;
	color: var(--ink-soft);
	margin-bottom: 16px;
}
.pw-funcs {
	list-style: none;
	margin: 0 0 18px;
	padding: 0;
	display: grid;
	gap: 7px;
}
.pw-funcs li {
	font-size: 0.86rem;
	color: var(--ink-soft);
	padding-left: 18px;
	position: relative;
}
.pw-funcs li::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0.62em;
	width: 7px;
	height: 1.5px;
	background: var(--accent, var(--blue-soft));
}
.pw-stack {
	display: flex;
	flex-wrap: wrap;
	gap: 7px;
	margin-bottom: 20px;
}
.pw-stack span {
	font-family: var(--sans);
	font-size: 0.68rem;
	font-weight: 500;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--ink-faint);
	border: 1px solid var(--line-soft);
	border-radius: 2px;
	padding: 4px 9px;
}
.pw-app-actions {
	margin-top: auto;
}

/* ── Closing note ─────────────────────────────────────────── */
.pw-close {
	padding: 20px 0 96px;
}
.pw-close-inner {
	border-top: 1px solid var(--line);
	padding-top: 34px;
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	justify-content: space-between;
	gap: 22px;
}
.pw-close p {
	font-family: var(--serif);
	font-size: 1.06rem;
	color: var(--ink-soft);
	max-width: 56ch;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 980px) {
	.pw-hero {
		padding: 132px 0 56px;
	}
	.pw-hero-inner {
		grid-template-columns: 1fr;
		gap: 34px;
	}
	.pw-hero-art {
		order: -1;
		max-width: 420px;
	}
	.pw-books,
	.pw-apps {
		grid-template-columns: 1fr;
	}
	.pw-book-body,
	.pw-app-body {
		padding: 24px 24px 28px;
	}
}
@media (max-width: 700px) {
	.pw-section {
		padding: 50px 0 60px;
	}
	.pw-hero-actions .btn-primary,
	.pw-hero-actions .btn-outline {
		flex: 1 1 auto;
		justify-content: center;
	}
}