.portfolio-page { background: var(--paper); }
.portfolio-main { padding-top: 78px; }

.portfolio-intro {
  padding-top: clamp(4.5rem, 9vw, 9rem);
  padding-bottom: clamp(4rem, 7vw, 7rem);
}

.portfolio-back {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: clamp(3rem, 6vw, 6rem);
  color: var(--muted);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portfolio-back span { color: var(--blue); font-size: 1rem; transition: transform 220ms ease; }
.portfolio-back:hover span { transform: translateX(-0.25rem); }

.portfolio-number {
  display: block;
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.61rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portfolio-title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4.6rem, 11vw, 12rem);
  font-weight: 400;
  letter-spacing: -0.075em;
  line-height: 0.82;
}

.portfolio-title em { color: var(--blue); }

.portfolio-title--single-line {
  font-size: clamp(3.8rem, 9.2vw, 10rem);
  white-space: nowrap;
}

.portfolio-copy {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.45fr);
  gap: clamp(2rem, 9vw, 10rem);
  align-items: start;
  margin-top: clamp(3rem, 6vw, 6rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.portfolio-description {
  max-width: 48rem;
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.55rem);
  line-height: 1.55;
}

.portfolio-meta { margin: 0; }
.portfolio-meta div + div { margin-top: 1.15rem; }

.portfolio-meta dt {
  margin-bottom: 0.3rem;
  color: var(--muted);
  font-size: 0.59rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portfolio-meta dd { margin: 0; font-size: 0.78rem; line-height: 1.5; }

.portfolio-external {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--ink);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.portfolio-external span { color: var(--blue); font-size: 1rem; }

.portfolio-collage {
  width: min(1600px, calc(100% - (2 * var(--pad))));
  margin: 0 auto;
  padding-bottom: clamp(5rem, 10vw, 10rem);
}

.collage-heading {
  display: flex;
  justify-content: space-between;
  margin-bottom: clamp(1rem, 2vw, 2rem);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.59rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.collage-row {
  display: grid;
  gap: clamp(0.7rem, 1.4vw, 1.4rem);
  margin-bottom: clamp(0.7rem, 1.4vw, 1.4rem);
}

.collage-row--two { grid-template-columns: 1fr 1fr; align-items: start; }
.collage-row--three { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; }
.collage-row--single { grid-template-columns: 1fr; }
.collage-item {
  display: block;
  overflow: hidden;
  background: var(--paper-deep);
  cursor: zoom-in;
}

.collage-item img {
  width: 100%;
  height: auto;
  transition: transform 650ms cubic-bezier(.2, .7, .2, 1), filter 350ms ease;
}

.collage-item:hover img,
.collage-item:focus-visible img {
  transform: scale(1.045);
  filter: saturate(1.06);
}

.collage-row--portrait {
  width: min(62%, 860px);
  margin-right: auto;
  margin-left: auto;
}

.portfolio-next {
  padding-top: clamp(4rem, 7vw, 7rem);
  padding-bottom: clamp(4rem, 7vw, 7rem);
  background: var(--ink);
  color: var(--white);
}

.portfolio-next-label {
  color: rgba(251, 248, 240, 0.55);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portfolio-next-link {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(251, 248, 240, 0.25);
}

.portfolio-next-link strong {
  font-family: var(--display);
  font-size: clamp(3.2rem, 7vw, 8rem);
  font-weight: 400;
  letter-spacing: -0.07em;
  line-height: 0.85;
}

.portfolio-next-link strong em { color: var(--blue); }

.portfolio-next-link > span {
  display: grid;
  width: 4.2rem;
  height: 4.2rem;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(251, 248, 240, 0.55);
  border-radius: 50%;
  font-size: 1.3rem;
  transition: background 220ms ease, transform 220ms ease;
}

.portfolio-next-link:hover > span { background: var(--blue); transform: translate(0.2rem, -0.2rem); }
.portfolio-footer { background: var(--ink); }

.portfolio-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  border: 0;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 4vw, 3rem);
  background: rgba(28, 23, 20, 0.96);
  color: var(--white);
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}

.portfolio-lightbox::backdrop { background: transparent; }
.portfolio-lightbox.is-open { opacity: 1; visibility: visible; }
.portfolio-lightbox-figure { margin: 0; display: grid; place-items: center; }

.portfolio-lightbox-image {
  width: auto;
  max-width: min(88vw, 1600px);
  max-height: 84vh;
  object-fit: contain;
  transform: scale(0.97);
  transition: transform 300ms cubic-bezier(.2, .7, .2, 1);
}

.portfolio-lightbox.is-open .portfolio-lightbox-image { transform: scale(1); }

.portfolio-lightbox-counter {
  margin-top: 0.8rem;
  color: rgba(251, 248, 240, 0.62);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portfolio-lightbox-close,
.portfolio-lightbox-nav {
  position: absolute;
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border: 1px solid rgba(251, 248, 240, 0.45);
  border-radius: 50%;
  background: rgba(28, 23, 20, 0.35);
  color: var(--white);
  cursor: pointer;
  font: 400 1.15rem var(--sans);
  transition: background 200ms ease, border-color 200ms ease;
}

.portfolio-lightbox-close:hover,
.portfolio-lightbox-nav:hover { background: var(--blue); border-color: var(--blue); }
.portfolio-lightbox-close { top: 1rem; right: 1rem; }
.portfolio-lightbox-nav { top: 50%; transform: translateY(-50%); }
.portfolio-lightbox-prev { left: 1rem; }
.portfolio-lightbox-next { right: 1rem; }

@media (max-width: 800px) {
  .portfolio-main { padding-top: 68px; }
  .portfolio-intro { padding-top: 3rem; padding-bottom: 3.5rem; }
  .portfolio-back { margin-bottom: 3.5rem; }
  .portfolio-title { font-size: clamp(4.2rem, 21vw, 7rem); }
  .portfolio-title--single-line { font-size: clamp(2.85rem, 13vw, 5rem); }
  .portfolio-copy { grid-template-columns: 1fr; gap: 2rem; margin-top: 3rem; }
  .portfolio-description { font-size: 1.05rem; }
  .collage-row--two { grid-template-columns: 1fr; }
  .collage-row--three { grid-template-columns: 1fr; }
  .collage-row--portrait { width: 100%; }
  .portfolio-lightbox { padding: 4.5rem 0.75rem 2rem; }
  .portfolio-lightbox-image { max-width: 100%; max-height: 78vh; }
  .portfolio-lightbox-nav { top: auto; bottom: 1rem; transform: none; }
  .portfolio-next-link { align-items: center; }
  .portfolio-next-link > span { width: 3.3rem; height: 3.3rem; }
}