/* ==========================================================================
   Cairn — home page sections. Each chapter is composed on its own terms.
   ========================================================================== */

/* --- 1 · Hero ------------------------------------------------------------ */

.hero {
	min-height: 100vh;
	min-height: 100svh;
	display: flex;
	align-items: flex-end;
	padding-block: 8rem clamp(2rem, 5vw, 4rem);
	overflow: hidden;
}

.hero__media {
	position: absolute;
	inset: 0;
	z-index: 0;
}

.hero__img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center 55%;
	filter: grayscale(0.35) contrast(1.05) brightness(0.92);
	animation: hero-drift 22s var(--ease) both;
}

@keyframes hero-drift {
	from { transform: scale(1.09); }
	to { transform: scale(1); }
}

.hero__scrim {
	position: absolute;
	inset: 0;
	z-index: 1;
	background:
		linear-gradient(to top, rgba(24, 24, 23, 0.94) 0%, rgba(24, 24, 23, 0.55) 42%,
			rgba(24, 24, 23, 0.28) 70%, rgba(24, 24, 23, 0.6) 100%);
}

.hero__inner {
	position: relative;
	z-index: 2;
	width: 100%;
}

.hero__eyebrow {
	color: var(--ink-soft);
	letter-spacing: 0.16em;
	text-transform: uppercase;
	font-size: var(--step--2);
	margin-block-end: clamp(1.5rem, 4vw, 2.75rem);
	padding-inline-start: 3.25rem;
	position: relative;
}

.hero__eyebrow::before {
	content: "";
	position: absolute;
	inset-inline-start: 0;
	inset-block-start: 0.62em;
	width: 2.4rem;
	height: var(--hair);
	background: var(--accent);
}

.hero__stmt {
	font-size: var(--step-5);
	line-height: 0.95;
	letter-spacing: -0.022em;
	max-width: 15ch;
}

.hero__foot {
	display: grid;
	gap: clamp(1.5rem, 3vw, 2.5rem);
	margin-block-start: clamp(2rem, 5vw, 3.5rem);
	padding-block-start: clamp(1.5rem, 3vw, 2.25rem);
	border-block-start: var(--hair) solid var(--rule);
}

@media (min-width: 900px) {
	.hero__foot {
		grid-template-columns: minmax(0, 1fr) auto;
		align-items: end;
		gap: clamp(2rem, 6vw, 5rem);
	}
}

.hero__body { max-width: 44ch; color: var(--ink-soft); font-size: var(--step-1); }
.hero__actions { display: flex; flex-wrap: wrap; gap: clamp(1.25rem, 3vw, 2.5rem); }

/* Physical insets on purpose: `writing-mode: vertical-rl` rotates the logical
   axes, so inset-inline-end here would resolve to the bottom, not the right. */
.hero__scroll {
	display: none;
	position: absolute;
	bottom: 0;
	right: var(--gutter);
	writing-mode: vertical-rl;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	font-size: var(--step--2);
	color: var(--ink-soft);
	align-items: center;
	gap: 0.9rem;
}

@media (min-width: 900px) { .hero__scroll { display: flex; } }

.hero__scroll-line {
	width: var(--hair);
	height: 4.5rem;
	background: var(--rule-strong);
	position: relative;
	overflow: hidden;
}

.hero__scroll-line::after {
	content: "";
	position: absolute;
	inset-inline: 0;
	inset-block-start: -60%;
	height: 60%;
	background: var(--accent);
	animation: scroll-tick 2.6s var(--ease) infinite;
}

@keyframes scroll-tick {
	0% { transform: translateY(0); }
	100% { transform: translateY(266%); }
}

/* --- 2 · Studio introduction --------------------------------------------- */

.intro__grid {
	display: grid;
	gap: clamp(2.5rem, 5vw, 4.5rem);
}

@media (min-width: 900px) {
	.intro__grid {
		grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
		align-items: start;
	}
	.intro__media { margin-block-start: clamp(3rem, 8vw, 8rem); }
}

.sec-head--flush .sec-stmt { margin-block-end: clamp(1.5rem, 3vw, 2.25rem); }

.intro__aside {
	margin-block-start: clamp(2rem, 4vw, 3rem);
	padding-block-start: 1.5rem;
	border-block-start: var(--hair) solid var(--rule);
	display: grid;
	gap: 0.9rem;
}

.intro__aside ul { display: grid; gap: 0.35rem; }
.intro__aside li { font-family: var(--font-mono); font-size: var(--step--1); color: var(--ink-soft); }

/* --- 3 · Featured work ---------------------------------------------------- */

.sec-head--split { margin-block-end: clamp(2.5rem, 5vw, 4.5rem); }

@media (max-width: 899px) {
	.sec-head--split .sec-stmt { margin-block-end: clamp(1.25rem, 2.5vw, 2rem); }
}

@media (min-width: 900px) {
	.sec-head--split {
		display: grid;
		grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
		gap: clamp(2rem, 6vw, 6rem);
		align-items: end;
	}
	.sec-head--split .sec-meta { grid-column: 1 / -1; }
}

.feat-lead { margin-block-end: clamp(3rem, 7vw, 6rem); }

.feat-pair {
	display: grid;
	gap: clamp(1.5rem, 3.5vw, 3rem);
	margin-block-end: clamp(3rem, 7vw, 6rem);
}

@media (min-width: 800px) {
	.feat-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.feat-pair > *:last-child { margin-block-start: clamp(3rem, 8vw, 7rem); }
}

.feat-strip { margin-block-end: clamp(3rem, 7vw, 6rem); }

.feat-strip__link {
	display: grid;
	gap: clamp(1.5rem, 3vw, 3rem);
	text-decoration: none;
	align-items: center;
}

@media (min-width: 900px) {
	.feat-strip__link { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
}

.feat-strip__frame img { transition: transform 1.1s var(--ease-out); }
.feat-strip__link:hover .feat-strip__frame img { transform: scale(1.035); }
.feat-strip__ref { color: var(--accent-ink); margin-block-end: 0.9rem; }
.feat-strip__title { font-size: var(--step-3); }
.feat-strip__summary { color: var(--ink-soft); margin-block: 1rem 1.5rem; max-width: 42ch; }
.feat-strip__body .meta-list--row { padding-block-start: 1.25rem; border-block-start: var(--hair) solid var(--rule); }

.feat-tail {
	display: grid;
	gap: clamp(1.5rem, 3.5vw, 3rem);
	align-items: end;
}

@media (min-width: 800px) {
	.feat-tail { grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); }
}

.feat-more {
	margin-block-start: clamp(2.5rem, 5vw, 4rem);
	padding-block-start: 1.75rem;
	border-block-start: var(--hair) solid var(--rule);
}

/* --- 4 · Philosophy ------------------------------------------------------- */

.prin-list {
	display: grid;
	gap: clamp(2rem, 4vw, 3rem);
}

@media (min-width: 620px) { .prin-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .prin-list { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.prin {
	display: grid;
	gap: 0.9rem;
	align-content: start;
	padding-block-start: 1.25rem;
	border-block-start: var(--hair) solid var(--rule-strong);
}

.prin__ref { color: var(--accent-ink); }
.prin__frame img { filter: grayscale(0.4) contrast(1.04); transition: filter 0.6s var(--ease); }
.prin:hover .prin__frame img { filter: grayscale(0) contrast(1); }
.prin__title { font-size: var(--step-1); }
.prin__body { color: var(--ink-soft); font-size: var(--step--1); line-height: 1.65; }

@media (min-width: 1000px) {
	.prin-list > .prin:nth-child(even) { margin-block-start: clamp(1.5rem, 4vw, 3.5rem); }
}

/* --- 5 · Services --------------------------------------------------------- */

.srv__grid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); }

@media (min-width: 900px) {
	.srv__grid {
		grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr) minmax(0, 0.8fr);
		align-items: start;
		column-gap: clamp(2rem, 5vw, 4.5rem);
	}
	.srv__head { position: sticky; top: 8rem; }
}

.srv__head .cta { margin-block-start: 2rem; }

.srow + .srow { border-block-start: var(--hair) solid var(--rule); }

.srow__link {
	display: grid;
	grid-template-columns: auto 1fr auto;
	align-items: baseline;
	gap: 1rem;
	padding-block: clamp(1rem, 2.4vw, 1.6rem);
	text-decoration: none;
	transition: padding-inline-start 0.4s var(--ease-out);
}

.srow__ref { color: var(--accent-ink); }
.srow__title { font-family: var(--font-display); font-size: var(--step-2); line-height: 1.1; }

.srow__lead {
	color: var(--ink-soft);
	font-size: var(--step--1);
	grid-column: 1 / -1;
	max-width: 44ch;
	margin-block-start: 0.5rem;
}

.srow__arrow { color: var(--accent-ink); opacity: 0; transition: opacity 0.3s var(--ease); }

@media (min-width: 700px) {
	.srow__link { grid-template-areas: "ref title arrow" ". lead ."; row-gap: 0.5rem; }
	.srow__ref { grid-area: ref; }
	.srow__title { grid-area: title; }
	.srow__lead { grid-area: lead; margin-block-start: 0; }
	.srow__arrow { grid-area: arrow; align-self: center; }
	.srow__link:hover { padding-inline-start: 1rem; }
	.srow__link:hover .srow__arrow,
	.srow__link:focus-visible .srow__arrow { opacity: 1; }
}

.srow__thumb { margin-block-end: 1.25rem; }

@media (min-width: 900px) { .srow__thumb { display: none; } }

.srv__preview { display: none; }

@media (min-width: 900px) {
	.srv__preview { display: block; position: sticky; top: 8rem; }
	.srv__preview img { filter: grayscale(0.3) contrast(1.03); transition: opacity 0.35s var(--ease); }
	.srv__preview.is-swapping img { opacity: 0; }
}

/* --- 6 · Project in focus -------------------------------------------------- */

.focus {
	min-height: 92vh;
	display: flex;
	align-items: center;
	overflow: hidden;
	padding-block: clamp(5rem, 12vw, 9rem);
}

.focus__media {
	position: absolute;
	inset: -8% 0;
	z-index: 0;
	will-change: transform;
}

.focus__img { width: 100%; height: 100%; object-fit: cover; }

.focus__scrim {
	position: absolute;
	inset: 0;
	z-index: 1;
	background: linear-gradient(100deg, rgba(24, 24, 23, 0.92) 0%,
		rgba(24, 24, 23, 0.7) 42%, rgba(24, 24, 23, 0.2) 100%);
}

.focus__inner { position: relative; z-index: 2; max-width: 46rem; }
.focus__title { font-size: var(--step-4); line-height: 1; }
.focus__story { margin-block: clamp(1.25rem, 3vw, 2rem); color: var(--ink-soft); font-size: var(--step-1); max-width: 40ch; }
.focus__inner .meta-list--row { padding-block: 1.5rem; border-block: var(--hair) solid var(--rule); margin-block-end: 1.75rem; }

/* --- 7 · Materials --------------------------------------------------------- */

.mat { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }

.mpanel {
	display: grid;
	gap: clamp(1.5rem, 3vw, 2.5rem);
	align-items: center;
}

@media (min-width: 800px) {
	.mpanel { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }
}

.mpanel__code { color: var(--accent-ink); }
.mpanel__name { font-size: var(--step-3); margin-block: 0.4rem 1rem; }
.mpanel__note { color: var(--ink-soft); max-width: 40ch; margin-block-end: 1.75rem; }

.mat__tabs {
	display: grid;
	grid-auto-flow: column;
	grid-auto-columns: minmax(5.5rem, 1fr);
	gap: clamp(0.5rem, 1.5vw, 1rem);
	overflow-x: auto;
	scrollbar-width: none;
	padding-block-start: 1.5rem;
	border-block-start: var(--hair) solid var(--rule);
}

.mat__tabs::-webkit-scrollbar { display: none; }

.swatch {
	display: grid;
	gap: 0.55rem;
	padding: 0;
	text-align: start;
	color: var(--ink-soft);
	transition: color var(--dur-fast) var(--ease);
}

.swatch__img { position: relative; }

.swatch__img::after {
	content: "";
	position: absolute;
	inset: 0;
	border: var(--hair) solid transparent;
	transition: border-color var(--dur-fast) var(--ease);
}

.swatch img { filter: saturate(0.85) contrast(1.02); transition: transform 0.6s var(--ease-out); }
.swatch:hover img { transform: scale(1.05); }
.swatch.is-active { color: var(--ink); }
.swatch.is-active .swatch__img::after { border-color: var(--accent-ink); border-width: 2px; }

/* --- 8 · Process ----------------------------------------------------------- */

.proc { position: relative; }

.proc__line {
	position: absolute;
	inset-block: 0.75rem;
	inset-inline-start: 0;
	width: var(--hair);
	background: var(--rule);
	display: none;
}

.proc__line span {
	position: absolute;
	inset-block-start: 0;
	inset-inline: 0;
	height: 0%;
	background: var(--accent-ink);
}

@media (min-width: 800px) {
	.proc__line { display: block; }
	.pstage-list { padding-inline-start: clamp(2rem, 5vw, 4rem); }
}

.pstage-list { display: grid; gap: clamp(2rem, 4vw, 3.25rem); }

.pstage {
	display: grid;
	gap: 1rem;
	padding-block-start: 1.25rem;
	border-block-start: var(--hair) solid var(--rule);
	align-items: start;
}

@media (min-width: 800px) {
	.pstage {
		grid-template-columns: 4rem minmax(0, 1fr) minmax(0, 0.55fr);
		gap: clamp(1.5rem, 4vw, 3rem);
		align-items: start;
	}
}

.pstage__ref { color: var(--accent-ink); font-size: var(--step-0); }
.pstage__title { font-family: var(--font-display); font-size: var(--step-2); }
.pstage__lead { color: var(--ink-soft); margin-block-start: 0.5rem; max-width: 40ch; }
.pstage__dur { margin-block-start: 0.65rem; }
.pstage__media img { filter: grayscale(0.35) contrast(1.04); transition: filter 0.6s var(--ease); }
.pstage:hover .pstage__media img { filter: none; }

.proc__more { margin-block-start: clamp(2.5rem, 5vw, 4rem); }

/* --- 9 · The practice ------------------------------------------------------ */

.awards { margin-block-start: clamp(2.5rem, 5vw, 4rem); }
.awards h3 { margin-block-end: 1.25rem; }
.awards__list { display: grid; }

.awards__list li {
	display: grid;
	grid-template-columns: 4.5rem minmax(0, 1fr);
	gap: 0.35rem 1.25rem;
	padding-block: 0.9rem;
	border-block-start: var(--hair) solid var(--rule);
	align-items: baseline;
}

@media (min-width: 700px) {
	.awards__list li { grid-template-columns: 5rem minmax(0, 1fr) minmax(0, 1fr); }
}

.awards__list li > span:nth-child(2) { font-family: var(--font-display); font-size: var(--step-1); }
.award__detail { color: var(--ink-soft); font-size: var(--step--1); }

/* --- 10 · Client quote ----------------------------------------------------- */

.quote__grid { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

@media (min-width: 900px) {
	.quote__grid { grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr); }
}

.quote__media img { filter: grayscale(0.5) contrast(1.06); }

.quote__text p {
	font-size: clamp(1.45rem, 1rem + 2.1vw, 2.85rem);
	line-height: 1.16;
	letter-spacing: -0.012em;
}

.quote__by {
	display: grid;
	gap: 0.25rem;
	margin-block-start: clamp(1.5rem, 3vw, 2.5rem);
	padding-block-start: 1.25rem;
	border-block-start: var(--hair) solid var(--rule);
}

.quote__name { font-size: var(--step-0); font-weight: 500; }

/* --- 11 · Journal ---------------------------------------------------------- */

.jgrid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); }

@media (min-width: 1000px) {
	.jgrid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); align-items: start; }
	.jgrid__rest { display: grid; gap: clamp(2rem, 4vw, 3rem); }
}

@media (min-width: 620px) and (max-width: 999px) {
	.jgrid__rest { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; }
}

.jgrid__more {
	margin-block-start: clamp(2.5rem, 5vw, 4rem);
	padding-block-start: 1.75rem;
	border-block-start: var(--hair) solid var(--rule);
}

/* --- 12 · Start ------------------------------------------------------------ */

.start {
	overflow: hidden;
	padding-block: clamp(5rem, 12vw, 10rem);
}

.start__media { position: absolute; inset: -8% 0; z-index: 0; will-change: transform; }

.start__img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	filter: grayscale(0.6) contrast(1.05) brightness(0.7);
}

.start__scrim {
	position: absolute;
	inset: 0;
	z-index: 1;
	background: linear-gradient(180deg, rgba(24, 24, 23, 0.9), rgba(24, 24, 23, 0.96));
}

.start__inner { position: relative; z-index: 2; }
.start__stmt { font-size: var(--step-4); max-width: 14ch; }
.start__body { max-width: 44ch; color: var(--ink-soft); font-size: var(--step-1); margin-block: clamp(1.25rem, 3vw, 2rem); }
.start__actions { margin-block-end: clamp(2.5rem, 5vw, 4rem); }

.start__details {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: clamp(1.5rem, 3vw, 2.5rem);
	padding-block-start: clamp(1.75rem, 3vw, 2.5rem);
	border-block-start: var(--hair) solid var(--rule);
}

@media (min-width: 900px) { .start__details { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.start__details p:last-child { margin-block-start: 0.4rem; font-size: var(--step--1); }
.start__details .mono { color: var(--ink); }

/* --- Shared closing band ---------------------------------------------------- */

.cband__inner { display: grid; gap: clamp(1.25rem, 3vw, 2rem); align-items: end; }

@media (min-width: 900px) {
	.cband__inner {
		grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr) auto;
		gap: clamp(2rem, 5vw, 4.5rem);
	}
}

.cband__stmt { font-size: var(--step-3); }
.cband__body { color: var(--ink-soft); max-width: 40ch; }
.cband__inner--tight { margin-block-start: clamp(3rem, 6vw, 5rem); padding-block-start: 2rem; border-block-start: var(--hair) solid var(--rule); }