@import "./theme.css";

:root {
	--read: "Newsreader", Georgia, "Times New Roman", serif;
	--t-xxl: clamp(2.05rem, 4.3vw, 3.85rem);
	--t-xl: clamp(1.85rem, 3.6vw, 3.15rem);
	--t-lg: clamp(1.35rem, 2.2vw, 2rem);
	--t-md: clamp(1.12rem, 1.35vw, 1.32rem);
	--gutter: clamp(1.25rem, 4.5vw, 4.5rem);
	--measure: 34rem;
	--max: 82rem;
	--section-y: clamp(4.25rem, 11vw, 11rem);
}

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

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family: var(--display);
	font-size: var(--t-base);
	line-height: 1.6;
	font-synthesis-weight: none;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	overflow-x: hidden;
	/* Color only — background transition fights black/white first-paint. */
	transition: color 0.4s var(--ease);
}

h1,
h2,
h3,
p,
dl,
ul {
	margin: 0;
	padding: 0;
}

ul {
	list-style: none;
}

img,
svg {
	display: block;
	max-width: 100%;
}

button,
a {
	color: inherit;
	text-decoration: none;
}

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

::selection {
	background: var(--accent-wash);
	color: var(--fg);
}

[data-register] {
	--page-accent: var(--accent);
}

[data-register="orient"] {
	--page-accent: var(--confidence);
}

.shell {
	width: 100%;
	max-width: var(--max);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.section {
	position: relative;
	padding-block: var(--section-y);
	background: var(--bg);
	color: var(--fg);
}

.h-xxl {
	font-size: var(--t-xxl);
	font-weight: 500;
	line-height: 1.02;
	letter-spacing: -0.028em;
}

.h-lg {
	font-size: var(--t-lg);
	font-weight: 500;
	line-height: 1.18;
	letter-spacing: -0.016em;
}

.prose {
	font-family: var(--read);
	font-size: var(--t-md);
	line-height: 1.68;
	color: var(--fg);
	max-width: var(--measure);
	font-variation-settings: "opsz" 16;
}

.prose + .prose {
	margin-top: 1.15em;
}

.lede {
	font-family: var(--display);
	font-size: var(--t-lg);
	font-weight: 400;
	line-height: 1.35;
	letter-spacing: -0.014em;
	color: var(--fg-muted);
	max-width: 44ch;
}

.label {
	font-family: var(--mono);
	font-size: var(--t-label);
	font-weight: 500;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--fg-muted);
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.6em;
	padding: 0.95em 1.5em;
	background: var(--accent);
	color: var(--on-accent);
	border: 1px solid transparent;
	border-radius: 999px;
	font-size: var(--t-sm);
	font-weight: 500;
	letter-spacing: -0.005em;
	cursor: pointer;
	transition:
		background var(--dur) var(--ease),
		transform 0.25s var(--ease);
}

.btn:hover {
	background: var(--accent-strong);
}

.btn:active {
	transform: translateY(1px);
}

.btn .arrow {
	transition: transform 0.35s var(--ease-out);
}

.btn:hover .arrow {
	transform: translateX(0.25em);
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ---- about page header ---- */
.about-hdr {
	position: sticky;
	top: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	min-height: 3.75rem;
	padding-inline: var(--gutter);
	background: color-mix(in srgb, var(--bg) 88%, transparent);
	backdrop-filter: blur(14px) saturate(1.1);
	border-bottom: 1px solid var(--border);
}

.about-hdr__back {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	font-size: var(--t-sm);
	font-weight: 500;
	color: var(--fg-muted);
	transition: color 0.3s var(--ease);
}

.about-hdr__back:hover {
	color: var(--accent);
}

.about-hdr__back .arrow {
	transition: transform 0.35s var(--ease-out);
}

.about-hdr__back:hover .arrow {
	transform: translateX(-0.2em);
}

.phead {
	padding-block: clamp(3rem, 7vw, 6rem) clamp(2.25rem, 4.5vw, 3.5rem);
	border-bottom: 1px solid var(--border);
}

.phead__eyebrow {
	display: flex;
	align-items: center;
	gap: 0.7rem;
	font-family: var(--mono);
	font-size: var(--t-label);
	font-weight: 500;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--fg-muted);
}

.phead__eyebrow::before {
	content: "";
	width: 1.35rem;
	height: 1px;
	background: var(--page-accent);
	flex: none;
}

.phead__title {
	margin-top: 1.15rem;
	max-width: 18ch;
	text-wrap: balance;
}

.phead__lede {
	margin-top: 1.35rem;
}

.long {
	padding-block: clamp(2rem, 5vw, 4rem);
}

.long__prose {
	max-width: 42rem;
}

.vlink {
	display: inline-flex;
	align-items: center;
	gap: 0.5em;
	font-size: var(--t-sm);
	font-weight: 500;
	color: var(--fg);
	padding-bottom: 0.2em;
	border-bottom: 1px solid var(--border);
	transition:
		border-color 0.3s var(--ease),
		color 0.3s var(--ease);
}

.vlink:hover {
	color: var(--accent);
	border-bottom-color: var(--accent);
}

.vlink .arrow {
	transition: transform 0.35s var(--ease-out);
}

.vlink:hover .arrow {
	transform: translateX(0.25em);
}

.book {
	background: var(--bg-quiet);
}

.book__title {
	padding-top: 1.35rem;
	border-top: 2px solid var(--page-accent);
	display: inline-block;
}

.book__body {
	display: grid;
	grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
	gap: clamp(1.5rem, 4vw, 2.5rem);
	align-items: start;
	max-width: 42rem;
	margin-top: clamp(1.5rem, 3vw, 2rem);
}

.book__cover {
	display: block;
	border-radius: 0.35rem;
	overflow: hidden;
	border: 1px solid var(--border);
	box-shadow: var(--shadow-sm);
	transition:
		box-shadow 0.3s var(--ease),
		transform 0.25s var(--ease);
}

.book__cover:hover {
	box-shadow: var(--shadow-lg);
	transform: translateY(-2px);
}

.book__cover img {
	width: 100%;
	height: auto;
}

.book__copy {
	display: flex;
	flex-direction: column;
	gap: 1.25rem;
}

.signoff {
	padding-block: clamp(2.5rem, 6vw, 4rem);
	border-top: 1px solid var(--border);
}

.signoff__in {
	max-width: 42rem;
}

.signoff__line {
	font-family: var(--read);
	font-size: var(--t-md);
	font-style: italic;
	line-height: 1.5;
	color: var(--fg-muted);
}

.signoff__mark {
	margin-top: 0.85rem;
	font-family: "Great Vibes", "Segoe Script", "Brush Script MT", cursive;
	font-size: clamp(3.25rem, 9vw, 4.75rem);
	font-weight: 400;
	line-height: 0.95;
	letter-spacing: 0.04em;
	color: var(--fg);
	transform: rotate(-5deg);
	transform-origin: left center;
	user-select: none;
}

.signoff__mark::after {
	content: "";
	display: block;
	width: min(12rem, 72%);
	height: 1px;
	margin-top: 0.15rem;
	margin-left: 0.15rem;
	background: color-mix(in srgb, var(--fg) 35%, transparent);
	transform: rotate(2deg);
}

.signoff__cred {
	margin-top: 0.65rem;
	font-family: var(--display);
	font-size: var(--t-sm);
	font-weight: 500;
	letter-spacing: 0.01em;
	color: var(--fg-muted);
}

.connect {
	padding-block: clamp(2.5rem, 6vw, 4rem);
}

.connect__in {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 1rem 2rem;
}

.connect__in .label {
	flex: 1 1 100%;
}

@media (max-width: 560px) {
	.book__body {
		grid-template-columns: minmax(0, 1fr);
		max-width: 20rem;
	}
}

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

	*,
	*::before,
	*::after {
		/* biome-ignore lint/complexity/noImportantStyles: required to override component transitions */
		transition-duration: 0.01ms !important;
	}
}

/* ---------- Legal pages (/terms, /privacy) ---------- */

.legal__prose {
	max-width: 44rem;
}

.legal__prose .h-lg {
	margin: 2.5rem 0 0.85rem;
	font-size: var(--t-md, 1.15rem);
}

.legal__prose .h-lg:first-child {
	margin-top: 0;
}

.legal__list {
	padding-left: 1.15rem;
	list-style: disc;
}

.legal__list li {
	margin-bottom: 0.6rem;
}