/* =========================================
   1. VARIABLES
========================================= */

:root {
  --background: #f2f0ea;
  --foreground: #111111;
  --muted: #6f6d66;
  --line: rgba(17, 17, 17, 0.18);
  --header-height: 88px;
}


/* =========================================
   2. RESET
========================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--foreground);
  font-family: Arial, Helvetica, sans-serif;
  cursor: crosshair;
}

a,
button {
  cursor: crosshair;
}

img {
  display: block;
  width: 100%;
}

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

button,
input,
textarea,
select {
  font: inherit;
}


/* =========================================
   3. GLOBAL TYPOGRAPHY
========================================= */

h1,
h2,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: "aktiv-grotesk", Arial, Helvetica, sans-serif;
  font-weight: 400;
  letter-spacing: -0.045em;
}

p {
  line-height: 1.45;
}


/* =========================================
   4. HEADER
========================================= */

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;

  display: flex;
  align-items: flex-start;
  justify-content: space-between;

  width: 100%;
  min-height: var(--header-height);
  padding: 22px 28px;

  mix-blend-mode: difference;
  color: #ffffff;

  pointer-events: none;
}

.site-header a {
  pointer-events: auto;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0;

  font-family: "aktiv-grotesk", Arial, Helvetica, sans-serif;
  font-size: clamp(38px, 5.6vw, 88px);
  line-height: 0.86;
  letter-spacing: -0.045em;

  will-change: opacity;
}

.site-nav {
  display: flex;
  gap: 24px;

  font-size: 12px;
  letter-spacing: 0.04em;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";

  position: absolute;
  right: 0;
  bottom: -4px;
  left: 0;

  height: 1px;

  background: currentColor;

  transform: scaleX(0);
  transform-origin: right;
  transition: transform 250ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}


/* =========================================
   5. HERO
========================================= */

.hero {
  position: relative;

  display: flex;
  align-items: flex-end;

  min-height: 100svh;
  padding: 140px 28px 34px;

  border-bottom: 1px solid var(--line);
}

.hero-copy {
  width: min(1120px, 92vw);
}

.eyebrow,
.section-label {
  margin-bottom: 22px;

  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 1100px;
  margin-bottom: 30px;

  font-size: clamp(54px, 8.7vw, 146px);
  line-height: 0.9;
}

.hero-intro {
  max-width: 540px;
  margin-bottom: 0;
  margin-left: auto;

  font-size: clamp(16px, 1.5vw, 23px);
}

.scroll-note {
  position: absolute;
  right: 28px;
  bottom: 34px;

  margin: 0;

  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}


/* =========================================
   6. FLOATING GALLERY
========================================= */

.gallery {
  position: relative;
  min-height: 2300px;
  overflow: hidden;

  border-bottom: 1px solid var(--line);
}

.gallery-drawing {
  position: absolute;
  z-index: 1;
  inset: 0;

  width: 100%;
  height: 100%;

  overflow: visible;
  pointer-events: none;
}

.gallery-drawing-line {
  fill: none;
  stroke: rgba(17, 17, 17, 0.28);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;

  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.gallery-background-text {
  position: sticky;
  z-index: 0;
  top: 44vh;

  width: 100%;
  padding: 0 20px;

  color: rgba(255, 255, 255, 0.10);

  font-size: clamp(72px, 16vw, 240px);
  line-height: 0.8;
  letter-spacing: -0.07em;
  text-align: center;
  white-space: nowrap;

  pointer-events: none;
}

.project {
  position: absolute;
  touch-action: manipulation;
  z-index: 2;

  display: block;

  transition:
    z-index 0s,
    filter 400ms ease;
  will-change: transform;
}

.project figure {
  margin: 0;
}

.project img,
.project video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;

  background: #d9d6cd;
  box-shadow: 0 18px 42px rgba(17, 17, 17, 0.2);

  transition:
    transform 650ms cubic-bezier(0.2, 0.75, 0.25, 1),
    filter 500ms ease,
    box-shadow 500ms ease;
}

.project figcaption {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 3px 10px;

  padding-top: 9px;

  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.035em;
  text-transform: uppercase;

  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 250ms ease,
    transform 250ms ease;
}

.project-number {
  grid-row: 1 / 3;
  color: var(--muted);
}

.project-title {
  font-weight: 700;
}

.project-meta {
  color: var(--muted);
}

.project:hover,
.project:focus-visible {
  z-index: 20;
}

.project:hover img,
.project:hover video,
.project:focus-visible img,
.project:focus-visible video {
  transform: scale(1.035);
  box-shadow: 0 24px 56px rgba(17, 17, 17, 0.28);
}

.project:hover figcaption,
.project:focus-visible figcaption {
  opacity: 1;
  transform: translateY(0);
}

.gallery:has(.project:hover) .project:not(:hover) img,
.gallery:has(.project:hover) .project:not(:hover) video {
  filter: grayscale(0.85) contrast(0.88) opacity(0.62);
}


/* Individual artwork positions */

.project--one {
  top: 160px;
  left: 7vw;

  width: clamp(280px, 35vw, 560px);
}

.project--one img,
.project--one video {
  aspect-ratio: 4 / 3;
}

.project--two {
  top: 430px;
  right: 6vw;

  width: clamp(230px, 25vw, 390px);
}

.project--two img {
  aspect-ratio: 3508 / 4961;
  object-fit: contain;
}

.project--three {
  top: 860px;
  left: 29vw;

  width: clamp(270px, 31vw, 490px);
}

.project--three img {
  aspect-ratio: 1 / 1;
}

.project--four {
  top: 1230px;
  left: 5vw;

  width: clamp(250px, 28vw, 440px);
}

.project--four img {
  aspect-ratio: 4 / 5;
}

.project--six {
  top: 1650px;
  left: 38vw;

  width: clamp(220px, 27vw, 430px);
}

.project--six img {
  aspect-ratio: 3 / 4;
}


/* =========================================
   7. ABOUT
========================================= */

.about {
  padding: 100px 28px 130px;
}

.about-grid {
  display: grid;
  grid-template-columns:
    minmax(0, 1.2fr)
    minmax(220px, 0.48fr)
    minmax(240px, 0.42fr);
  gap: clamp(28px, 5vw, 84px);
  align-items: start;
}

.about-heading {
  min-width: 0;
}

.about h2 {
  max-width: 900px;
  margin-bottom: 0;

  font-size: clamp(44px, 5.4vw, 88px);
  line-height: 0.94;
}

.about-portrait {
  margin: 0;
}

.about-portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: #d9d6cd;
}

.about-portrait figcaption {
  margin-top: 9px;
  color: var(--muted);

  font-size: 10px;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.about-copy {
  padding-top: 8px;
}

.about-copy p {
  font-size: 16px;
}

.text-link {
  display: inline-block;
  margin-top: 20px;

  border-bottom: 1px solid currentColor;
  padding-bottom: 4px;
}


/* =========================================
   8. FOOTER
========================================= */

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 40px;

  padding: 22px 28px;

  border-top: 1px solid var(--line);

  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  gap: 24px;
}


/* =========================================
   10. ACCESSIBILITY
========================================= */

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 5px;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* =========================================
   11. TABLET
========================================= */

@media (max-width: 900px) {
  .hero {
    padding-top: 120px;
  }

  .hero-intro {
    margin-left: 0;
  }

  .scroll-note {
    display: none;
  }

  .gallery {
    min-height: 2000px;
  }

  .project--one {
    left: 5vw;
  }

  .project--two {
    right: 4vw;
  }

  .project--three {
    left: 24vw;
  }

  .project--four {
    left: 4vw;
  }

  .project--six {
    left: 32vw;
  }

  .about-grid {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 0.48fr);
    gap: 46px 34px;
  }

  .about-heading {
    grid-column: 1 / -1;
  }

  .about-copy {
    max-width: 520px;
    margin-left: 0;
  }
}


/* =========================================
   12. MOBILE
========================================= */

@media (max-width: 680px) {
  :root {
    --header-height: 72px;
  }

  .site-header {
    flex-direction: column;
    gap: 14px;
    padding: 17px 16px;
  }

  .brand {
    font-size: clamp(30px, 9vw, 48px);
  }

  .site-nav {
    gap: 12px;
  }

  .site-nav a:first-child {
    display: none;
  }

  .hero {
    min-height: 92svh;
    padding: 110px 16px 24px;
  }

  .hero h1 {
    font-size: clamp(47px, 15vw, 82px);
  }

  .hero-intro {
    font-size: 16px;
  }

  .gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 72px;

    min-height: 0;
    padding: 90px 16px;
  }

  .gallery-background-text {
    display: none;
  }

  .project {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;

    width: 100%;
  }

  .project:nth-of-type(even) {
    width: 78%;
    margin-left: auto;
  }

  .project:nth-of-type(odd) {
    width: 88%;
  }

  .project figcaption {
    opacity: 1;
    transform: none;
  }

  .project img,
  .project video {
    max-height: none;
  }

  .about {
    padding: 80px 16px 100px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .about-heading {
    grid-column: auto;
  }

  .about h2 {
    font-size: clamp(42px, 13vw, 68px);
  }

  .about-portrait {
    width: 82%;
    margin-left: auto;
  }

  .about-copy {
    max-width: none;
  }

  .site-footer {
    flex-direction: column;
    padding: 20px 16px;
  }

  .site-footer div {
    flex-wrap: wrap;
  }
}


/* =========================================
   13. PLACEHOLDER IMAGE FALLBACK
========================================= */

.project img:not([src]),
.project img[src=""] {
  min-height: 320px;
  background:
    linear-gradient(135deg, #1a1a1a 0%, #777 50%, #ece8df 100%);
}


/* =========================================
   PROJECT POP-UP WINDOW
========================================= */

body.modal-open {
  overflow: hidden;
}

.project-modal {
  width: min(1180px, calc(100vw - 48px));
  max-width: none;
  max-height: calc(100dvh - 48px);
  margin: auto;
  padding: 0;

  border: 1px solid var(--foreground);
  border-radius: 0;
  background: var(--background);
  color: var(--foreground);

  overflow: hidden;
}

.project-modal::backdrop {
  background: rgba(17, 17, 17, 0.72);
  backdrop-filter: blur(10px);
}

.modal-panel {
  max-height: calc(100dvh - 50px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.modal-header {
  position: sticky;
  z-index: 4;
  top: 0;

  display: flex;
  align-items: center;
  justify-content: space-between;

  min-height: 64px;
  padding: 16px 20px;

  border-bottom: 1px solid var(--line);
  background: var(--background);
}

.modal-count,
.modal-meta {
  margin: 0;

  color: var(--muted);

  font-size: 10px;
  line-height: 1.2;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.modal-close {
  min-width: 72px;
  min-height: 40px;
  padding: 8px 0 8px 16px;

  border: 0;
  background: transparent;
  color: inherit;

  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: right;

  cursor: pointer;
}

.modal-content {
  padding: clamp(22px, 4vw, 56px);
}

.modal-introduction {
  display: grid;
  grid-template-columns: 130px minmax(0, 1.2fr) minmax(260px, 0.55fr);
  gap: clamp(22px, 4vw, 64px);
  align-items: start;

  margin-bottom: clamp(48px, 8vw, 110px);
}

.modal-introduction h2 {
  margin: 0;

  font-size: clamp(52px, 7vw, 112px);
  line-height: 0.86;
}

.modal-description {
  margin: 0;
  align-self: end;

  font-size: clamp(16px, 1.4vw, 20px);
}

.modal-images {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}

.modal-images figure {
  grid-column: span 2;
  margin: 0;
  min-width: 0;
}

.modal-images .modal-media--video {
  grid-column: span 3;
}

.modal-images .modal-media--half {
  grid-column: span 3;
}

.modal-images .modal-media--two-thirds {
  grid-column: span 4;
}

.modal-images .modal-media--wide {
  grid-column: 1 / -1;
}

.modal-images img,
.modal-images video {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: #d9d6cd;
}


/* Mobile pop-up */

@media (max-width: 680px) {
  .project-modal {
    width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    margin: 0;

    border: 0;
  }

  .modal-panel {
    max-height: 100dvh;
  }

  .modal-header {
    min-height: 58px;
    padding:
      max(12px, env(safe-area-inset-top))
      16px
      12px;
  }

  .modal-close {
    min-width: 80px;
    min-height: 44px;
  }

  .modal-content {
    padding:
      28px
      16px
      max(40px, env(safe-area-inset-bottom));
  }

  .modal-introduction {
    grid-template-columns: 1fr;
    gap: 18px;

    margin-bottom: 48px;
  }

  .modal-introduction h2 {
    font-size: clamp(54px, 18vw, 86px);
  }

  .modal-description {
    max-width: 34rem;
  }

  .modal-images {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .modal-images figure,
  .modal-images .modal-media--video,
  .modal-images .modal-media--half,
  .modal-images .modal-media--two-thirds,
  .modal-images .modal-media--wide {
    grid-column: 1 / -1;
  }
}


/* =========================================
   HERO BACKGROUND VIDEO
========================================= */

.hero--video {
  isolation: isolate;
  overflow: hidden;
  background: #111111;
  color: #ffffff;
}

.hero-video {
  position: absolute;
  z-index: -3;
  inset: 0;

  width: 100%;
  height: 100%;

  object-fit: cover;
  object-position: center;
}

.hero-video-overlay {
  position: absolute;
  z-index: -2;
  inset: 0;

  background:
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.18) 0%,
      rgba(0, 0, 0, 0.08) 35%,
      rgba(0, 0, 0, 0.54) 100%
    );
  pointer-events: none;
}

.hero--video .hero-copy,
.hero--video .scroll-note {
  position: relative;
  z-index: 1;
}

.hero--video .eyebrow,
.hero--video .hero-intro,
.hero--video .scroll-note {
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.35);
}

/* Fallback when no video is available */
.hero-video:not(:playing) {
  background: #111111;
}

/* Mobile optimisation */
@media (max-width: 680px) {
  .hero-video {
    object-position: center center;
  }

  .hero-video-overlay {
    background:
      linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.22) 0%,
        rgba(0, 0, 0, 0.16) 35%,
        rgba(0, 0, 0, 0.68) 100%
      );
  }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  .hero-video {
    display: none;
  }

  .hero--video {
    background:
      #111111
      url("images/hero-video-poster.svg")
      center / cover
      no-repeat;
  }
}


/* =========================================
   OPENING FADE SEQUENCE
========================================= */

/*
  Sequence:
  1. Black screen
  2. Video fades in
  3. Hero text and navigation fade in
*/

.intro-curtain {
  position: fixed;
  z-index: 1000;
  inset: 0;

  background: #000000;

  opacity: 1;
  pointer-events: none;

  transition: opacity 1100ms cubic-bezier(0.22, 1, 0.36, 1);
}

.is-video-visible .intro-curtain {
  opacity: 0;
}

.is-intro-complete .intro-curtain {
  visibility: hidden;
}

/* Hide the video beneath the opening black layer at first. */
.is-loading .hero-video {
  opacity: 0;
}

.hero-video {
  opacity: 0;
  transition: opacity 1300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.is-video-visible .hero-video {
  opacity: 1;
}

/* Hero content waits until after the video starts appearing. */
.is-loading .site-header,
.is-loading .hero-copy,
.is-loading .scroll-note {
  opacity: 0;
  transform: translateY(18px);
}

.site-header,
.hero-copy,
.scroll-note {
  transition:
    opacity 900ms ease,
    transform 1100ms cubic-bezier(0.22, 1, 0.36, 1);
}

.is-text-visible .site-header,
.is-text-visible .hero-copy,
.is-text-visible .scroll-note {
  opacity: 1;
  transform: translateY(0);
}

/* Prevent a flash of later content before the intro begins. */
.is-loading .gallery,
.is-loading .about,
.is-loading .site-footer {
  opacity: 0;
}

.gallery,
.about,
.site-footer {
  transition: opacity 800ms ease;
}

.is-intro-complete .gallery,
.is-intro-complete .about,
.is-intro-complete .site-footer {
  opacity: 1;
}

/* Reduced motion: reveal everything quickly without staged animation. */
@media (prefers-reduced-motion: reduce) {
  .intro-curtain {
    display: none;
  }

  .hero-video,
  .site-header,
  .hero-copy,
  .scroll-note,
  .gallery,
  .about,
  .site-footer {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}