/* ============================================================
   SALAR — estudio de color · Santiago de Chile
   One canvas, one ink, three channels.
   ============================================================ */

/* ---------- fonts ---------- */
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 380;
  font-display: swap;
  src: url('../assets/fonts/fraunces-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/archivo-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Fragment Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/fragment-mono-latin.woff2') format('woff2');
}

/* ---------- tokens ---------- */
:root {
  --canvas: #0b0a08;
  --band: #14120e;
  --ink: #ede6da;
  --muted: #8a8172;
  --hairline: #262219;

  --ch-r: #ff2222;
  --ch-g: #22ff44;
  --ch-b: #2255ff;

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Archivo', 'Helvetica Neue', sans-serif;
  --font-mono: 'Fragment Mono', 'Courier New', monospace;

  --size-display: clamp(6rem, 17vw, 15rem);
  --size-display-sm: clamp(2.75rem, 7.5vw, 6.5rem);
  --size-heading: clamp(1.75rem, 3.2vw, 2.75rem);
  --size-body-lg: clamp(1.125rem, 1.6vw, 1.375rem);
  --size-body: 1.0625rem;
  --size-mono: 0.8125rem;

  --ease: cubic-bezier(0.65, 0, 0.15, 1); /* the only curve */
  --gutter: clamp(20px, 4vw, 64px);
  --section-gap: clamp(96px, 12vw, 176px);
}

/* mobile: body drops to 16px so the 6rem display floor holds the 6x scale ratio */
@media (max-width: 640px) {
  :root {
    --size-body: 1rem;
  }
}

/* ---------- base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--size-body);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--ink);
  text-decoration: none;
}

::selection {
  background: var(--ink);
  color: var(--canvas);
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

/* ---------- grain (one overlay, whole site) ---------- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 60;
  opacity: 0.028;
  transform: translateZ(0);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- layout ---------- */
.wrap {
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  margin-block-end: var(--section-gap);
}

[id] {
  scroll-margin-top: 104px;
}

/* below-fold sections: skip initial layout/paint until near the viewport */
main section:not(:first-child) {
  content-visibility: auto;
  contain-intrinsic-size: auto 800px;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--size-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-block-end: 24px;
  border-bottom: 1px solid var(--hairline);
  margin-block-end: clamp(40px, 6vw, 96px);
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--size-display-sm);
  font-weight: 380;
  font-variation-settings: 'opsz' 144;
  letter-spacing: -0.03em;
  line-height: 1;
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  background: linear-gradient(to bottom, var(--canvas) 55%, transparent);
}

.nav__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-block: 24px;
}

.nav a {
  transition: opacity 0.3s var(--ease);
}

.nav a:hover {
  opacity: 0.6;
}

.nav__links {
  display: flex;
  gap: clamp(16px, 3vw, 40px);
}

@media (max-width: 640px) {
  .nav__links a:nth-child(2),
  .nav__links a:nth-child(3) {
    display: none;
  }
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: var(--size-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ---------- channel-split type ---------- */
.split {
  position: relative;
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 380;
  font-variation-settings: 'opsz' 144;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--ink);
}

.split__layer {
  position: absolute;
  inset: 0;
  mix-blend-mode: screen;
  pointer-events: none;
}

/* the hero layers animate continuously; keep them on compositor layers so the
   channel drift never repaints the giant glyphs on the main thread */
.hero .split__layer {
  will-change: transform;
}

.split__r { color: var(--ch-r); }
.split__g { color: var(--ch-g); }
.split__b { color: var(--ch-b); }

.split__ink {
  position: relative;
  display: inline-block;
}

/* nav wordmark: converged at rest, splits on hover */
.wordmark {
  font-size: 1.375rem;
  line-height: 1;
}

.wordmark .split__layer {
  transform: translate(0, 0);
  opacity: 0;
  transition: transform 0.45s var(--ease), opacity 0.45s var(--ease);
}

.wordmark:hover .split__r,
.wordmark:focus-visible .split__r {
  transform: translate(-3px, 0);
  opacity: 1;
}

.wordmark:hover .split__b,
.wordmark:focus-visible .split__b {
  transform: translate(3px, 0);
  opacity: 1;
}

.wordmark:hover .split__g,
.wordmark:focus-visible .split__g {
  transform: translate(0, 2px);
  opacity: 1;
}

/* hero: channels converge on load, then drift ≤3px forever */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-block-end: clamp(48px, 8vh, 96px);
  margin-block-end: var(--section-gap);
}

.hero__display {
  font-size: var(--size-display);
  display: block;
}

.hero .split__ink {
  opacity: 0;
  animation: ink-in 1s var(--ease) 1.5s forwards;
}

.hero .split__r { animation: converge-r 2.2s var(--ease) forwards, drift-r 7s var(--ease) 2.2s infinite alternate; }
.hero .split__g { animation: converge-g 2.2s var(--ease) forwards, drift-g 8s var(--ease) 2.2s infinite alternate; }
.hero .split__b { animation: converge-b 2.2s var(--ease) forwards, drift-b 6.5s var(--ease) 2.2s infinite alternate; }

@keyframes converge-r { from { transform: translate(-28px, -10px); } to { transform: translate(0, 0); } }
@keyframes converge-g { from { transform: translate(18px, 14px); } to { transform: translate(0, 0); } }
@keyframes converge-b { from { transform: translate(24px, -16px); } to { transform: translate(0, 0); } }

@keyframes drift-r { from { transform: translate(0, 0); } to { transform: translate(-2.5px, -1px); } }
@keyframes drift-g { from { transform: translate(0, 0); } to { transform: translate(1.5px, 2px); } }
@keyframes drift-b { from { transform: translate(0, 0); } to { transform: translate(2.5px, -1.5px); } }

@keyframes ink-in { to { opacity: 1; } }

.hero__meta {
  margin-block-end: clamp(24px, 4vh, 48px);
}

.hero__tagline {
  font-family: var(--font-display);
  font-size: var(--size-body-lg);
  font-variation-settings: 'opsz' 40;
  letter-spacing: -0.01em;
  color: var(--muted);
  margin-block-start: clamp(24px, 4vh, 40px);
}

.hero__intro {
  max-width: 34em;
  margin-block-start: 16px;
  font-size: var(--size-body-lg);
  line-height: 1.7;
}

.hero__scroll {
  margin-block-start: clamp(40px, 6vh, 64px);
}

/* ---------- scroll reveal (transform + opacity only) ---------- */
.fade {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.fade.in-view {
  opacity: 1;
  transform: translateY(0);
}

.fade:nth-child(2) { transition-delay: 0.1s; }
.fade:nth-child(3) { transition-delay: 0.2s; }
.fade:nth-child(4) { transition-delay: 0.3s; }

/* ---------- work index ---------- */
.work-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 64px);
  padding-block: clamp(40px, 6vw, 80px);
  border-bottom: 1px solid var(--hairline);
  align-items: end;
}

.work-row:first-of-type {
  border-top: 1px solid var(--hairline);
}

@media (min-width: 900px) {
  .work-row--imaged {
    grid-template-columns: 5fr 7fr;
  }
  .work-row--imaged:nth-of-type(even) {
    grid-template-columns: 7fr 5fr;
  }
  .work-row--imaged:nth-of-type(even) .work-row__text {
    order: 2;
  }
}

.work-row__text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.work-row__title {
  font-family: var(--font-display);
  font-size: var(--size-display-sm);
  font-weight: 380;
  font-variation-settings: 'opsz' 144;
  letter-spacing: -0.03em;
  line-height: 1;
}

.work-row__title a {
  transition: opacity 0.3s var(--ease);
}

.work-row__title a:hover {
  opacity: 0.6;
}

.work-row__note {
  max-width: 26em;
  color: var(--muted);
}

.work-row__more {
  font-family: var(--font-mono);
  font-size: var(--size-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--hairline);
  align-self: flex-start;
  padding-block-end: 4px;
  transition: opacity 0.3s var(--ease);
}

.work-row__more:hover {
  opacity: 0.6;
}

/* type-only rows */
.work-row--type .work-row__title {
  font-size: clamp(2.5rem, 8vw, 7rem);
}

/* ---------- grade reveal ----------
   Two copies of the same image. The top copy carries a STATIC
   log-flattening filter; only its opacity animates. */
.reveal {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1360 / 768;
  background: var(--band);
}

.reveal img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reveal__log {
  filter: saturate(0.22) contrast(0.72) brightness(1.18);
  opacity: 1;
  transition: opacity 1.2s var(--ease) 0.25s;
  z-index: 2;
}

.reveal.is-graded .reveal__log {
  opacity: 0;
}

/* every image sits under a darkening gradient */
.reveal::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(to top, rgba(11, 10, 8, 0.62), rgba(11, 10, 8, 0) 55%);
}

.reveal__tag {
  position: absolute;
  z-index: 4;
  left: 16px;
  bottom: 12px;
}

.reveal__tag::after {
  content: 'LOG';
}

.reveal.is-graded .reveal__tag::after {
  content: 'GRADE';
}

/* ---------- oficio ---------- */
.oficio__lede {
  font-family: var(--font-display);
  font-size: var(--size-heading);
  font-weight: 380;
  font-variation-settings: 'opsz' 90;
  letter-spacing: -0.02em;
  line-height: 1.35;
  max-width: 24em;
  margin-block-end: clamp(48px, 7vw, 96px);
}

.services {
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.services li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 24px;
  align-items: baseline;
  padding-block: 24px;
  border-bottom: 1px solid var(--hairline);
}

.services .name {
  font-size: var(--size-body-lg);
}

.services .desc {
  color: var(--muted);
  max-width: 40em;
  grid-column: 2;
}

.text-link {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
  transition: opacity 0.3s var(--ease);
}

.text-link:hover {
  opacity: 0.6;
}

/* RGB parade divider — the colorist's instrument as ornament */
.parade {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  gap: 10px 16px;
  align-items: center;
  margin-block: clamp(48px, 7vw, 96px);
}

.parade .bar {
  display: block;
  height: 8px;
}

.parade .lvl {
  font-family: var(--font-mono);
  font-size: var(--size-mono);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.parade .bar--r { background: var(--ch-r); width: 62%; opacity: 0.8; }
.parade .bar--g { background: var(--ch-g); width: 47%; opacity: 0.65; }
.parade .bar--b { background: var(--ch-b); width: 78%; opacity: 0.8; }

/* ---------- estudio (band = the only elevation) ---------- */
.estudio {
  background: var(--band);
  padding-block: var(--section-gap);
}

.estudio__grid {
  display: grid;
  gap: clamp(32px, 5vw, 96px);
}

@media (min-width: 900px) {
  .estudio__grid {
    grid-template-columns: 7fr 5fr;
  }
}

.estudio p + p {
  margin-block-start: 1.2em;
}

.estudio__facts {
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.estudio__facts li {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 16px;
  border-bottom: 1px solid var(--hairline);
}

/* ---------- contacto ---------- */
.contacto__mail {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 6rem);
  font-weight: 380;
  font-variation-settings: 'opsz' 144;
  letter-spacing: -0.03em;
  line-height: 1.05;
  display: inline-block;
  margin-block: 24px 48px;
  border-bottom: 1px solid transparent;
  transition: opacity 0.3s var(--ease);
}

.contacto__mail:hover {
  opacity: 0.6;
  border-bottom-color: var(--ink);
}

.contacto__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 48px;
}

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--hairline);
  padding-block: 40px 48px;
}

.footer__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 48px;
}

/* ============================================================
   Case study
   ============================================================ */
.case-hero {
  min-height: 72svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-block: 140px clamp(40px, 7vh, 80px);
  margin-block-end: var(--section-gap);
}

.case-hero .hero__display {
  font-size: clamp(3.25rem, 12vw, 11rem);
}

.case-brief {
  display: grid;
  gap: clamp(32px, 5vw, 96px);
}

@media (min-width: 900px) {
  .case-brief {
    grid-template-columns: 4fr 8fr;
  }
}

.case-brief h2 {
  font-family: var(--font-display);
  font-size: var(--size-heading);
  font-weight: 380;
  font-variation-settings: 'opsz' 90;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.case-brief .col p + p {
  margin-block-start: 1.4em;
}

.case-brief .col p {
  max-width: 38em;
  font-size: var(--size-body-lg);
}

/* ---------- wipe comparator ---------- */
.wipe {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1360 / 768;
  background: var(--band);
  --wipe: 50%;
  touch-action: none;
  cursor: ew-resize;
}

.wipe img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.wipe__log {
  z-index: 2;
  filter: saturate(0.22) contrast(0.72) brightness(1.18);
  clip-path: inset(0 calc(100% - var(--wipe)) 0 0);
}

.wipe::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(to top, rgba(11, 10, 8, 0.5), rgba(11, 10, 8, 0) 45%);
}

.wipe__handle {
  position: absolute;
  z-index: 4;
  top: 0;
  bottom: 0;
  left: var(--wipe);
  width: 1px;
  background: var(--ink);
}

.wipe__handle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  border: 1px solid var(--ink);
  background: var(--canvas);
}

.wipe__handle::after {
  content: '◂ ▸';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--ink);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.wipe__label {
  position: absolute;
  z-index: 4;
  bottom: 12px;
  pointer-events: none;
}

.wipe__label--log { left: 16px; }
.wipe__label--grade { right: 16px; }

/* ---------- channel plates ---------- */
.plates {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
  margin-block-start: clamp(40px, 6vw, 80px);
}

@media (min-width: 700px) {
  .plates {
    grid-template-columns: repeat(3, 1fr);
  }
}

.plate figure {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--band);
}

.plate img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 65% 50%;
}

.plate--r img { filter: url('#plate-r'); }
.plate--g img { filter: url('#plate-g'); }
.plate--b img { filter: url('#plate-b'); }

.plate figcaption {
  margin-block-start: 12px;
}

.plates__note {
  margin-block-start: 24px;
  color: var(--muted);
  max-width: 30em;
}

/* ---------- pull quote ---------- */
.pull-quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4.5vw, 3.5rem);
  font-weight: 380;
  font-variation-settings: 'opsz' 144;
  letter-spacing: -0.02em;
  line-height: 1.25;
  max-width: 22em;
}

.pull-quote cite {
  display: block;
  font-style: normal;
  margin-block-start: 24px;
}

/* ---------- credits ---------- */
.credits {
  border-top: 1px solid var(--hairline);
}

.credits div {
  display: grid;
  grid-template-columns: minmax(120px, 200px) 1fr;
  gap: 24px;
  padding-block: 14px;
  border-bottom: 1px solid var(--hairline);
}

.credits dd {
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--size-body);
  text-transform: none;
  letter-spacing: 0;
}

.case-next {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 48px;
  margin-block-start: clamp(40px, 6vw, 64px);
}

/* ---------- 404 ---------- */
/* the section also carries .hero, which supplies the full-height flex column */

.notfound__code {
  font-size: var(--size-display);
  display: block;
}

.notfound__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 48px;
  margin-block-start: clamp(32px, 5vh, 48px);
}

/* ---------- mobile hero rhythm ----------
   Bottom-pinning reads as composed negative space on a wide desktop frame, but on a
   tall, narrow viewport it strands the type under a dead gap. Centring keeps the same
   generous emptiness and moves it below the block instead of above it.
   Declared last so it wins over .case-hero, which sets its own justify-content. */
@media (max-width: 640px) {
  .hero,
  .case-hero {
    justify-content: center;
  }

  .case-hero {
    padding-block-start: 96px; /* nav clearance only; the 140px desktop offset over-indents here */
  }
}

/* ---------- reduced motion: final state, zero movement ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .hero .split__r,
  .hero .split__g,
  .hero .split__b {
    animation: none;
    transform: translate(0, 0);
  }
  .hero .split__ink {
    animation: none;
    opacity: 1;
  }
  .fade {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .reveal__log {
    opacity: 0;
    transition: none;
  }
  .wordmark .split__layer {
    transition: none;
  }
  .nav a,
  .work-row__title a,
  .work-row__more,
  .contacto__mail {
    transition: none;
  }
}