/* Isabel Yeow — portfolio. Black, minimal, type-led.
   Fonts: Geist (UI + display), Gelasio italic (titles). */

:root {
  --bg: #000;
  --fg: #fff;
  --dim: rgba(255, 255, 255, 0.45);
  --line: rgba(255, 255, 255, 0.14);
  --sans:
    "Geist", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --serif: "Gelasio", Georgia, serif;
  --pad: clamp(16px, 1.6vw, 28px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  -webkit-tap-highlight-color: transparent;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.35;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
}

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

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

.serif {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

/* ───────── Navigation ───────── */

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  padding: max(var(--pad), env(safe-area-inset-top))
    max(var(--pad), env(safe-area-inset-right)) var(--pad)
    max(var(--pad), env(safe-area-inset-left));
  pointer-events: none;
  mix-blend-mode: difference;
}

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

.site-nav .brand {
  justify-self: start;
}

.site-nav .menu {
  display: flex;
  flex-direction: column;
}

.site-nav .menu a {
  position: relative;
  padding-left: 12px;
  color: var(--dim);
  transition: color 0.25s;
}

.site-nav .menu a:hover,
.site-nav .menu a[aria-current="page"] {
  color: var(--fg);
}

.site-nav .menu a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
}

.site-nav .info {
  justify-self: end;
}

/* ───────── Intro (home) ───────── */

.intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: var(--bg);
  transition: transform 0.9s var(--ease);
}

.intro.done {
  transform: translateY(-100%);
}

.intro-text {
  font-size: clamp(18px, 2.4vw, 32px);
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(8px);
  animation: intro-in 0.8s 0.2s var(--ease) forwards;
}

.intro-text .dash {
  margin: 0 0.35em;
  color: var(--dim);
}

@keyframes intro-in {
  to {
    opacity: 1;
    transform: none;
  }
}

/* ───────── Home ───────── */

.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

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

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 30%;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.45));
  pointer-events: none;
}

.hero-foot {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  padding: var(--pad);
}

.hero-caption {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-caption .serif {
  font-size: 15px;
}

.hero-caption a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero-scroll {
  grid-column: 3;
  justify-self: end;
  opacity: 0.9;
}

.about {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--pad);
  align-items: center;
  min-height: 100vh;
  min-height: 100svh;
  padding: 110px var(--pad) 60px;
}

.about-figure {
  grid-column: 1 / span 4;
}

.about-image {
  width: auto;
  max-width: 100%;
  height: min(60vh, 520px);
  height: min(60svh, 520px);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 20%;
}

.about-body {
  grid-column: 7 / span 6;
  align-self: end;
}

.about-text {
  font-size: clamp(24px, 3.6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.about-text em {
  font-family: var(--serif);
  font-weight: 400;
}

.link-serif {
  display: inline-block;
  margin-top: 28px;
  color: var(--dim);
}

.link-serif:hover {
  color: var(--fg);
}

.caption {
  margin-top: 12px;
  color: var(--dim);
}

/* ───────── Page shell (inner pages) ───────── */

.page {
  min-height: 100vh;
  padding: 120px var(--pad) var(--pad);
}

.page-title {
  font-size: clamp(48px, 9vw, 150px);
  line-height: 0.95;
  letter-spacing: -0.045em;
  font-weight: 400;
}

.page-sub {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--dim);
}

.footer {
  display: flex;
  justify-content: space-between;
  padding: var(--pad);
  color: var(--dim);
}

.footer a:hover {
  color: var(--fg);
}

/* ───────── Collections index ───────── */

.cats {
  list-style: none;
  margin-top: clamp(32px, 6vw, 80px);
  font-size: clamp(32px, 7.2vw, 112px);
}

/* Fixed row height + full-width link = no gaps to fall through, no jumping */
.cats li {
  height: 1.12em;
}

.cats a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  height: 100%;
  font-size: inherit;
  line-height: 1.12;
  letter-spacing: -0.04em;
  white-space: nowrap;
  overflow: visible;
  transition:
    opacity 0.3s,
    color 0.3s;
}

.cats a sup {
  font-family: var(--sans);
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0;
  color: var(--dim);
}

.cats.has-active a {
  opacity: 0.25;
}

.cats a.is-active {
  opacity: 1;
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: -0.03em;
}

.cat-preview {
  position: fixed;
  top: 50%;
  right: var(--pad);
  z-index: 5;
  width: min(34vw, 520px);
  aspect-ratio: 3 / 2;
  transform: translateY(-50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.cat-preview.show {
  opacity: 1;
}

.cat-preview img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.25s;
}

.cat-preview img.active {
  opacity: 1;
}

/* ───────── Single collection ───────── */

.collection-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--pad);
  margin-bottom: clamp(32px, 5vw, 64px);
}

.back {
  color: var(--dim);
}

.back:hover {
  color: var(--fg);
}

.photo-grid {
  columns: 4;
  column-gap: 8px;
}

.photo-grid button {
  display: block;
  width: 100%;
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  background: #111;
  cursor: zoom-in;
  break-inside: avoid;
  overflow: hidden;
}

.photo-grid img {
  width: 100%;
  height: auto;
  transition:
    transform 0.8s var(--ease),
    opacity 0.6s;
  opacity: 0;
}

.photo-grid img.loaded {
  opacity: 1;
}

@media (hover: hover) {
  .photo-grid button:hover img {
    transform: scale(1.03);
  }
}

/* ───────── Lightbox ───────── */

.lb {
  touch-action: pan-y;
  overscroll-behavior: contain;
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  place-items: center;
  background: rgba(0, 0, 0, 0.96);
}

.lb.open {
  display: grid;
}

.lb img {
  max-width: 92vw;
  max-height: 86vh;
  max-height: 86dvh;
  -webkit-user-select: none;
  user-select: none;
  object-fit: contain;
}

.lb button {
  position: absolute;
  padding: 22px;
  border: 0;
  background: none;
  color: var(--fg);
  font: inherit;
  cursor: pointer;
}

.lb .lb-close {
  top: 0;
  right: 0;
}

.lb .lb-prev {
  left: 0;
  top: 50%;
}

.lb .lb-next {
  right: 0;
  top: 50%;
}

.lb .lb-count {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px;
  text-align: center;
  color: var(--dim);
}

/* ───────── Film ───────── */

.film-list {
  margin-top: clamp(32px, 6vw, 80px);
  border-top: 1px solid var(--line);
}

.film-item {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--pad);
  padding: clamp(24px, 3vw, 48px) 0;
  border-bottom: 1px solid var(--line);
}

.film-info {
  grid-column: 1 / span 4;
}

.film-info h2 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(24px, 2.6vw, 40px);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.film-info p {
  margin-top: 12px;
  color: var(--dim);
  max-width: 36ch;
}

.film-info a {
  display: inline-block;
  margin-top: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.film-media {
  grid-column: 6 / span 7;
}

.film-media iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  background: #111;
}

.film-media audio {
  width: 100%;
  filter: invert(1) grayscale(1);
}

.film-stills {
  grid-column: 1 / -1;
  columns: 3;
  column-gap: 8px;
}

.film-stills button {
  display: block;
  width: 100%;
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  background: #111;
  cursor: zoom-in;
  break-inside: avoid;
}

.film-stills img {
  width: 100%;
  height: auto;
}

/* ───────── Info ───────── */

.info-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--pad);
  margin-top: clamp(32px, 6vw, 80px);
}

.info-copy {
  grid-column: 1 / span 4;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.info-copy a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.info-figure {
  grid-column: 7 / span 5;
}

.info-photo {
  width: auto;
  max-width: 100%;
  height: clamp(260px, calc(100vh - 400px), 520px);
  height: clamp(260px, calc(100svh - 400px), 520px);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 20%;
}

/* ───────── Responsive ───────── */

@media (max-width: 1000px) {
  .photo-grid {
    columns: 3;
  }

  .film-info,
  .film-media {
    grid-column: 1 / -1;
  }

  .film-info p {
    max-width: 60ch;
  }
}

@media (max-width: 720px) {
  .photo-grid {
    columns: 2;
  }

  .film-stills {
    columns: 2;
  }

  .about-figure,
  .about-body,
  .info-copy,
  .info-figure,
  .film-info,
  .film-media {
    grid-column: 1 / -1;
  }

  .about-figure {
    max-width: 70%;
  }

  .about-body {
    margin-top: 24px;
  }

  .cat-preview {
    display: none;
  }

  .cats li {
    height: 1.35em;
  }

  .about {
    min-height: 0;
    padding: 110px var(--pad) 60px;
  }

  .about-image,
  .info-photo {
    height: min(52svh, 420px);
  }

  .site-nav {
    display: flex;
    align-items: baseline;
    gap: 16px;
  }

  .site-nav .brand {
    margin-right: auto;
  }

  .site-nav .menu {
    flex-direction: row;
    gap: 16px;
  }

  .site-nav .menu a {
    padding: 6px 0;
  }

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

  .site-nav .menu a[aria-current="page"]::before {
    display: none;
  }

  .site-nav .info {
    order: 3;
    padding: 6px 0;
  }

  .page {
    padding-top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro,
  .intro-text,
  .photo-grid img {
    animation: none;
    transition: none;
  }

  .intro-text {
    opacity: 1;
    transform: none;
  }
}