/* ──────────────────────────────────────────────────────────────
   Simon Rook — site stylesheet

   Tokens are derived from the cover art of "The Stoic Mind for
   Overthinkers" (Assets/Cover/cover-artwork-v1.png in the book
   project): deep navy field, warm bronze accent, bone type. The
   type pairing echoes the cover too — condensed sans display over
   a transitional serif for reading copy.
   ────────────────────────────────────────────────────────────── */

@import url("https://fonts.googleapis.com/css2?family=Oswald:wght@300;400;500;600&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&family=Inter:wght@400;500;600&display=swap");

/* ── Tokens: color ───────────────────────────── */

:root {
	--night: #0a1120;
	--night-2: #0d1524;
	--surface: #131d30;
	--surface-2: #1a2740;
	--surface-border: #26344d;
	--bone-1: #f2ece1;
	--bone-2: #b4becd;
	--bone-3: #78849a;
	--bronze: #c08b4f;
	--bronze-bright: #dba86a;
	--bronze-dim: #8a6236;
	--marble: #d8d2c6;

	--bg-page: var(--night);
	--bg-surface: var(--surface);
	--bg-surface-raised: var(--surface-2);
	--border-hairline: var(--surface-border);
	--text-primary: var(--bone-1);
	--text-secondary: var(--bone-2);
	--text-tertiary: var(--bone-3);
	--accent: var(--bronze);
	--link: var(--bronze-bright);
	--link-hover: var(--bone-1);
}

/* ── Tokens: type ────────────────────────────── */

:root {
	--font-display: "Oswald", "Arial Narrow", sans-serif;
	--font-body: "Source Serif 4", Georgia, serif;
	--font-ui: "Inter", system-ui, sans-serif;

	--text-display-1: clamp(44px, 6.5vw, 84px);
	--text-display-2: clamp(32px, 4.5vw, 56px);
	--text-h1: clamp(30px, 4vw, 44px);
	--text-h2: clamp(24px, 3vw, 32px);
	--text-h3: 21px;
	--text-body-lg: 19px;
	--text-body: 17px;
	--text-body-sm: 15px;
	--text-micro: 12px;

	--tracking-tight: -0.01em;
	--tracking-normal: 0;
	--tracking-wide: 0.06em;
	--tracking-widest: 0.2em;

	--lh-tight: 1.06;
	--lh-heading: 1.18;
	--lh-body: 1.65;
}

/* ── Tokens: space & effects ─────────────────── */

:root {
	--space-1: 4px;
	--space-2: 8px;
	--space-3: 12px;
	--space-4: 16px;
	--space-5: 24px;
	--space-6: 32px;
	--space-7: 48px;
	--space-8: 64px;
	--space-9: 96px;
	--space-10: 144px;
	--container-max: 1140px;
	--measure: 66ch;

	--radius-sm: 3px;
	--radius-md: 6px;
	--radius-lg: 12px;
	--radius-pill: 999px;

	--shadow-card: 0 14px 40px rgba(0, 0, 0, 0.5);
	--shadow-book: 0 24px 60px rgba(0, 0, 0, 0.6), 0 2px 0 rgba(242, 236, 225, 0.06);

	--blur-glass: blur(14px);
	--ease-out: cubic-bezier(0.16, 1, 0.3, 1);
	--duration-fast: 120ms;
	--duration-base: 220ms;
	--duration-slow: 420ms;
}

/* ── Base ────────────────────────────────────── */

* {
	box-sizing: border-box;
}

html,
body {
	min-height: 100%;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--font-body);
	font-size: var(--text-body);
	line-height: var(--lh-body);
	color: var(--text-secondary);
	background-color: var(--bg-page);
	background-image:
		radial-gradient(ellipse at 78% -5%, rgba(192, 139, 79, 0.12) 0%, transparent 55%),
		radial-gradient(ellipse at 5% 90%, rgba(26, 39, 64, 0.55) 0%, transparent 55%);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-size: cover;
	-webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
	font-family: var(--font-display);
	font-weight: 500;
	line-height: var(--lh-heading);
	color: var(--text-primary);
	letter-spacing: var(--tracking-tight);
	margin: 0;
}

h1 {
	font-size: var(--text-h1);
}
h2 {
	font-size: var(--text-h2);
}
h3 {
	font-family: var(--font-body);
	font-weight: 600;
	font-size: var(--text-h3);
	letter-spacing: var(--tracking-normal);
}

p {
	margin: 0;
}

a {
	color: var(--link);
	text-decoration: none;
	transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
	color: var(--bone-1);
}

img {
	max-width: 100%;
}

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

.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	z-index: 200;
	font-family: var(--font-ui);
	padding: var(--space-3) var(--space-5);
	background: var(--surface-2);
	color: var(--bone-1);
}

.skip-link:focus {
	left: var(--space-4);
	top: var(--space-4);
}

/* ── Header ──────────────────────────────────── */

.site-head {
	position: sticky;
	top: 0;
	z-index: 100;
	width: 100%;
	border-bottom: 1px solid var(--border-hairline);
	background: rgba(10, 17, 32, 0.85);
	backdrop-filter: var(--blur-glass);
	-webkit-backdrop-filter: var(--blur-glass);
}

.site-head-inner {
	max-width: var(--container-max);
	margin: 0 auto;
	padding: var(--space-4) clamp(16px, 3vw, 32px);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: var(--space-4);
}

.brand-link {
	display: flex;
	flex-direction: column;
	flex-shrink: 0;
	color: var(--bone-1);
	line-height: 1.1;
}

.brand-link:hover {
	color: var(--bone-1);
}

.brand-name {
	font-family: var(--font-display);
	font-size: 26px;
	font-weight: 500;
	letter-spacing: 0.14em;
	text-transform: uppercase;
}

.brand-role {
	font-family: var(--font-ui);
	font-size: 10px;
	font-weight: 500;
	letter-spacing: var(--tracking-widest);
	text-transform: uppercase;
	color: var(--bronze);
	margin-top: 3px;
}

.site-head-right {
	display: flex;
	align-items: center;
	margin-left: auto;
}

.site-head-divider {
	width: 1px;
	height: 20px;
	background: var(--border-hairline);
	margin: 0 var(--space-4);
}

.site-nav {
	display: flex;
	align-items: center;
	gap: var(--space-2);
}

.site-nav a {
	font-family: var(--font-ui);
	font-size: var(--text-micro);
	font-weight: 600;
	letter-spacing: var(--tracking-widest);
	text-transform: uppercase;
	color: var(--bone-3);
	padding: var(--space-2) var(--space-3);
	border-bottom: 2px solid transparent;
	transition: color var(--duration-base) var(--ease-out),
		border-color var(--duration-base) var(--ease-out);
}

.site-nav a:hover {
	color: var(--bone-1);
}

.site-nav a.active {
	color: var(--bone-1);
	border-bottom-color: var(--bronze);
}

.nav-toggle {
	display: none;
	position: relative;
	align-items: center;
	justify-content: center;
	width: 42px;
	height: 42px;
	margin-left: auto;
	flex-shrink: 0;
	border: 1px solid var(--border-hairline);
	border-radius: var(--radius-sm);
	background: transparent;
	color: var(--bone-2);
	cursor: pointer;
}

.nav-toggle svg {
	position: absolute;
	width: 20px;
	height: 20px;
	transition: opacity var(--duration-fast) var(--ease-out);
}

.nav-toggle-icon-close {
	opacity: 0;
}

.nav-toggle.is-open .nav-toggle-icon-open {
	opacity: 0;
}

.nav-toggle.is-open .nav-toggle-icon-close {
	opacity: 1;
}

/* ── Social icon buttons ─────────────────────── */

.social-nav {
	display: flex;
	align-items: center;
	gap: var(--space-2);
}

.social-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--border-hairline);
	color: var(--bone-2);
	transition: border-color var(--duration-base) var(--ease-out),
		color var(--duration-fast) var(--ease-out);
}

.social-link svg {
	width: 17px;
	height: 17px;
}

.social-link:hover {
	color: var(--bronze-bright);
	border-color: var(--bronze);
}

/* ── Buttons ─────────────────────────────────── */

.btn {
	font-family: var(--font-ui);
	font-weight: 600;
	letter-spacing: var(--tracking-wide);
	text-transform: uppercase;
	border: none;
	cursor: pointer;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--space-2);
	border-radius: var(--radius-sm);
	padding: 13px 26px;
	font-size: 13px;
	transition: transform var(--duration-fast) var(--ease-out),
		background var(--duration-base) var(--ease-out),
		box-shadow var(--duration-base) var(--ease-out),
		color var(--duration-base) var(--ease-out);
}

.btn svg {
	width: 16px;
	height: 16px;
}

.btn-lg {
	padding: 16px 34px;
	font-size: 14px;
}

.btn-sm {
	padding: 9px 18px;
	font-size: 12px;
}

.btn-primary {
	background: var(--bronze);
	color: var(--night);
}

.btn-primary:hover {
	background: var(--bronze-bright);
	color: var(--night);
	transform: translateY(-1px);
}

.btn-secondary {
	background: transparent;
	color: var(--bone-1);
	box-shadow: inset 0 0 0 1px var(--bronze-dim);
}

.btn-secondary:hover {
	color: var(--bone-1);
	box-shadow: inset 0 0 0 1px var(--bronze);
	transform: translateY(-1px);
}

.btn-ghost {
	background: transparent;
	color: var(--bone-2);
	box-shadow: inset 0 0 0 1px var(--border-hairline);
}

.btn-ghost:hover {
	color: var(--bone-1);
	box-shadow: inset 0 0 0 1px var(--bone-3);
}

.btn[aria-disabled="true"] {
	opacity: 0.4;
	pointer-events: none;
}

/* ── Badge ───────────────────────────────────── */

.badge {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
	font-family: var(--font-ui);
	font-weight: 600;
	font-size: var(--text-micro);
	letter-spacing: var(--tracking-widest);
	text-transform: uppercase;
	padding: 5px 12px;
	border-radius: var(--radius-sm);
	color: var(--bronze);
	border: 1px solid var(--bronze-dim);
}

.badge-filled {
	color: var(--night);
	background: var(--bronze);
	border-color: var(--bronze);
}

.badge-neutral {
	color: var(--bone-3);
	border-color: var(--border-hairline);
}

/* ── Layout utilities ────────────────────────── */

.page {
	max-width: var(--container-max);
	margin: 0 auto;
	padding: var(--space-8) clamp(16px, 3vw, 32px) var(--space-9);
}

.page-narrow {
	max-width: 780px;
}

.section {
	margin-top: var(--space-9);
}

.section-sm {
	margin-top: var(--space-7);
}

.eyebrow {
	display: block;
	font-family: var(--font-ui);
	font-size: var(--text-micro);
	font-weight: 600;
	letter-spacing: var(--tracking-widest);
	text-transform: uppercase;
	color: var(--bronze);
}

.lede {
	font-size: var(--text-body-lg);
	line-height: 1.6;
	color: var(--bone-2);
	max-width: 62ch;
}

.prose {
	max-width: var(--measure);
	display: flex;
	flex-direction: column;
	gap: var(--space-5);
}

.prose h2 {
	margin-top: var(--space-4);
}

.prose h3 {
	color: var(--bone-1);
}

.prose em {
	color: var(--bone-1);
}

.panel {
	background: var(--bg-surface);
	border: 1px solid var(--border-hairline);
	border-radius: var(--radius-md);
	padding: clamp(20px, 3vw, 32px);
}

.panel-quiet {
	background: rgba(19, 29, 48, 0.5);
}

.rule {
	height: 1px;
	border: 0;
	margin: var(--space-7) 0;
	background: linear-gradient(90deg, var(--bronze-dim), transparent 70%);
	opacity: 0.7;
}

.rule-short {
	width: 80px;
	height: 2px;
	border: 0;
	margin: var(--space-5) 0;
	background: var(--bronze);
	opacity: 0.9;
}

/* ── Hero ────────────────────────────────────── */

.hero {
	position: relative;
	border-bottom: 1px solid var(--border-hairline);
	overflow: hidden;
}

.hero-inner {
	position: relative;
	max-width: var(--container-max);
	margin: 0 auto;
	padding: clamp(48px, 8vw, 104px) clamp(16px, 3vw, 32px);
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
	align-items: center;
	gap: clamp(32px, 6vw, 72px);
}

.hero-copy {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: var(--space-5);
}

.hero-title {
	font-family: var(--font-display);
	font-size: var(--text-display-1);
	font-weight: 400;
	line-height: var(--lh-tight);
	letter-spacing: 0.02em;
	text-transform: uppercase;
	color: var(--bone-1);
	margin: 0;
}

.hero-sub {
	font-size: var(--text-body-lg);
	line-height: 1.6;
	color: var(--bone-2);
	max-width: 46ch;
}

/* Generic row of buttons. Deliberately sets no margin of its own so that
   spacing comes from the parent (`.section-sm`, `.prose` gap, hero flex gap) —
   an intrinsic margin here would win the cascade over those utilities. */
.button-row {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-4);
}

/* ── Book cover presentation ─────────────────── */

.book-cover {
	display: block;
	border-radius: var(--radius-sm);
	overflow: hidden;
	box-shadow: var(--shadow-book);
	border: 1px solid rgba(242, 236, 225, 0.08);
	transition: transform var(--duration-slow) var(--ease-out),
		box-shadow var(--duration-slow) var(--ease-out);
}

.book-cover img {
	display: block;
	width: 100%;
	height: auto;
}

a.book-cover:hover {
	transform: translateY(-6px);
	box-shadow: 0 32px 70px rgba(0, 0, 0, 0.65), 0 2px 0 rgba(242, 236, 225, 0.1);
}

/* ── Book detail layout ──────────────────────── */

.book-layout {
	display: grid;
	grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
	gap: clamp(28px, 5vw, 64px);
	align-items: start;
}

.book-aside {
	position: sticky;
	top: 112px;
	display: flex;
	flex-direction: column;
	gap: var(--space-5);
}

.book-main {
	display: flex;
	flex-direction: column;
	gap: var(--space-6);
	max-width: var(--measure);
}

.book-title {
	font-family: var(--font-display);
	font-size: var(--text-display-2);
	font-weight: 400;
	text-transform: uppercase;
	letter-spacing: 0.01em;
	line-height: 1.08;
	color: var(--bone-1);
	margin: 0;
}

.book-subtitle {
	font-size: var(--text-body-lg);
	font-style: italic;
	color: var(--bronze-bright);
	line-height: 1.5;
}

/* ── Detail list (book metadata) ─────────────── */

.detail-list {
	margin: 0;
	display: grid;
	grid-template-columns: auto minmax(0, 1fr);
	gap: var(--space-3) var(--space-5);
	font-size: var(--text-body-sm);
}

.detail-list dt {
	font-family: var(--font-ui);
	font-size: var(--text-micro);
	font-weight: 600;
	letter-spacing: var(--tracking-wide);
	text-transform: uppercase;
	color: var(--bone-3);
	line-height: 1.7;
}

.detail-list dd {
	margin: 0;
	color: var(--bone-1);
	font-variant-numeric: tabular-nums;
}

/* ── Feature list (checkmark bullets) ────────── */

.feature-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--space-4);
}

.feature-list li {
	display: grid;
	grid-template-columns: 22px minmax(0, 1fr);
	gap: var(--space-3);
	align-items: start;
	color: var(--bone-2);
}

.feature-list svg {
	width: 18px;
	height: 18px;
	margin-top: 5px;
	color: var(--bronze);
}

/* ── Contents (parts and chapters) ───────────── */

.contents {
	list-style: none;
	margin: 0;
	padding: 0;
	border-top: 1px solid var(--border-hairline);
}

.contents-part {
	padding: var(--space-5) 0 var(--space-3);
	border-bottom: 1px solid var(--border-hairline);
}

.contents-part-name {
	font-family: var(--font-ui);
	font-size: var(--text-micro);
	font-weight: 600;
	letter-spacing: var(--tracking-widest);
	text-transform: uppercase;
	color: var(--bronze);
}

.contents-note {
	margin-top: var(--space-3);
	font-size: var(--text-body-sm);
	color: var(--bone-2);
	max-width: 56ch;
}

.contents-chapters {
	list-style: none;
	margin: var(--space-3) 0 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.contents-chapters li {
	display: grid;
	grid-template-columns: 2.25rem minmax(0, 1fr);
	gap: var(--space-3);
	color: var(--bone-1);
	font-size: var(--text-body-sm);
}

.contents-n {
	color: var(--bone-3);
	font-variant-numeric: tabular-nums;
}

/* ── Book cards (books index) ────────────────── */

.book-grid {
	display: flex;
	flex-direction: column;
	gap: var(--space-8);
}

.book-card {
	display: grid;
	grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
	gap: clamp(24px, 4vw, 48px);
	align-items: start;
	padding-bottom: var(--space-8);
	border-bottom: 1px solid var(--border-hairline);
}

.book-grid > .book-card:last-child {
	border-bottom: 0;
	padding-bottom: 0;
}

.book-card-body {
	display: flex;
	flex-direction: column;
	gap: var(--space-4);
	align-items: flex-start;
	max-width: var(--measure);
}

.book-card-title {
	font-family: var(--font-display);
	font-size: var(--text-h2);
	font-weight: 400;
	text-transform: uppercase;
	color: var(--bone-1);
	margin: 0;
}

.book-card-title a {
	color: inherit;
}

.book-card-title a:hover {
	color: var(--bronze-bright);
}

/* ── Pull quote ──────────────────────────────── */

.pullquote {
	margin: 0;
	padding-left: var(--space-5);
	border-left: 2px solid var(--bronze);
	font-size: var(--text-body-lg);
	font-style: italic;
	color: var(--bone-1);
	line-height: 1.55;
	max-width: 52ch;
}

.pullquote cite {
	display: block;
	margin-top: var(--space-3);
	font-family: var(--font-ui);
	font-size: var(--text-micro);
	font-style: normal;
	font-weight: 600;
	letter-spacing: var(--tracking-wide);
	text-transform: uppercase;
	color: var(--bone-3);
}

/* ── Notice (reader note / disclaimer) ───────── */

.notice {
	display: grid;
	grid-template-columns: 20px minmax(0, 1fr);
	gap: var(--space-4);
	align-items: start;
	background: rgba(26, 39, 64, 0.45);
	border: 1px solid var(--border-hairline);
	border-left: 2px solid var(--bronze-dim);
	border-radius: var(--radius-sm);
	padding: var(--space-5);
	font-size: var(--text-body-sm);
	color: var(--bone-2);
	max-width: var(--measure);
}

.notice svg {
	width: 18px;
	height: 18px;
	margin-top: 3px;
	color: var(--bronze);
}

/* ── Retailer list ───────────────────────────── */

.retailers {
	display: flex;
	flex-direction: column;
	gap: var(--space-3);
}

/* ── Footer ──────────────────────────────────── */

.site-footer {
	max-width: var(--container-max);
	margin: var(--space-9) auto 0;
	padding: var(--space-6) clamp(16px, 3vw, 32px);
	border-top: 1px solid var(--border-hairline);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: var(--space-4);
	font-family: var(--font-ui);
	font-size: var(--text-body-sm);
	color: var(--bone-3);
}

.site-footer a {
	color: var(--bone-2);
}

.site-footer a:hover {
	color: var(--bronze-bright);
}

.footer-mark {
	font-family: var(--font-display);
	font-size: 20px;
	font-weight: 400;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bone-2);
}

.footer-legal {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: flex-end;
	gap: var(--space-2) var(--space-3);
	font-size: var(--text-micro);
	text-align: right;
}

/* A button that has to sit inline with the footer's links and be
   indistinguishable from them — it triggers script, so it can't be an anchor. */
.footer-link-button {
	background: none;
	border: 0;
	padding: 0;
	font: inherit;
	color: var(--link);
	cursor: pointer;
	transition: color var(--duration-fast) var(--ease-out);
}

.footer-link-button:hover {
	color: var(--link-hover);
}

/* Same idea inside body copy — reads as a link, acts as a control. */
.inline-link-button {
	background: none;
	border: 0;
	padding: 0;
	font: inherit;
	color: var(--link);
	text-decoration: underline;
	cursor: pointer;
}

.inline-link-button:hover {
	color: var(--link-hover);
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 900px) {
	body {
		background-attachment: scroll;
	}

	.hero-inner {
		grid-template-columns: minmax(0, 1fr);
	}

	.hero-art-wrap {
		order: -1;
		max-width: 260px;
	}

	.book-layout,
	.book-card {
		grid-template-columns: minmax(0, 1fr);
	}

	.book-aside {
		position: static;
		max-width: 300px;
	}

	.book-card .book-cover {
		max-width: 220px;
	}

	.site-head-inner {
		flex-wrap: wrap;
	}

	.nav-toggle {
		display: flex;
	}

	.site-head-right {
		order: 3;
		width: 100%;
		flex-direction: column;
		align-items: stretch;
		margin-left: 0;
		max-height: 0;
		overflow: hidden;
		opacity: 0;
		transition: max-height var(--duration-slow) var(--ease-out),
			opacity var(--duration-base) var(--ease-out);
	}

	.site-head-right.is-open {
		max-height: 32rem;
		opacity: 1;
		padding-bottom: var(--space-3);
	}

	.site-nav {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
	}

	.site-nav a {
		padding: var(--space-3);
		border-bottom: 1px solid var(--border-hairline);
	}

	.site-nav a.active {
		border-bottom-color: var(--bronze);
	}

	.site-head-divider {
		width: 100%;
		height: 1px;
		margin: var(--space-3) 0;
	}

	.social-nav {
		justify-content: center;
		flex-wrap: wrap;
	}

	.site-footer {
		flex-direction: column;
		text-align: center;
	}

	.footer-legal {
		justify-content: center;
		text-align: center;
	}
}

@media (max-width: 480px) {
	.button-row .btn,
	.retailers .btn {
		width: 100%;
	}

	.detail-list {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--space-1) 0;
	}

	.detail-list dd {
		margin-bottom: var(--space-3);
	}
}

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

	* {
		animation-duration: 0.01ms !important;
		transition-duration: 0.01ms !important;
	}
}