:root {
  color-scheme: light;
  --paper: #f4f4f2;
  --ink: #0a0a0a;
  --muted: #6b6b6b;
  --gray: #8a8a8a;
  --line: rgba(10, 10, 10, 0.16);
  --accent: #00467F;
  --white: #ffffff;
  --pad: clamp(1.25rem, 3vw, 3.25rem);
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: 'Manrope', sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { color: var(--white); background: var(--accent); }

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

.skip-link {
  position: fixed;
  top: .75rem;
  left: 1rem;
  z-index: 100;
  transform: translateY(-5rem);
  padding: .7rem 1rem;
  background: var(--paper);
  border: 1px solid var(--ink);
  transition: transform .2s ease;
}

.skip-link:focus { transform: translateY(0); }

.portfolio-top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--pad);
  background: rgba(244, 244, 242, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.wordmark {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.wordmark span { display: block; }

.back-link {
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: .68rem;
  letter-spacing: .06em;
  transition: color .25s ease, transform .25s ease;
}

.back-link:hover {
  color: var(--accent);
  transform: translateX(-.2rem);
}

.portfolio-page {
  padding: 3rem var(--pad) 4rem;
}

.section-kicker {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: 'DM Mono', monospace;
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.portfolio-hero h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3rem, 7vw, 6.4rem);
  font-weight: 500;
  line-height: .92;
  letter-spacing: -.06em;
}

.portfolio-blurb {
  max-width: 34rem;
  margin: 1.5rem 0 0;
  color: #555;
  font-size: 1rem;
  line-height: 1.7;
}

.portfolio-note {
  margin: 1rem 0 0;
  color: var(--gray);
  font-family: 'DM Mono', monospace;
  font-size: .62rem;
  letter-spacing: .04em;
}

.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 2rem;
}

.portfolio-filter {
  min-height: 2.4rem;
  padding: .45rem .85rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: .64rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .2s ease;
}

.portfolio-filter:hover {
  color: var(--ink);
  border-color: var(--ink);
}

.portfolio-filter.is-active {
  color: var(--white);
  background: var(--accent);
  border-color: var(--accent);
}

.portfolio-filter:active { transform: scale(.97); }

.portfolio-category {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.portfolio-category[hidden] { display: none; }

.category-heading {
  margin: 0 0 1.75rem;
  color: var(--accent);
  font-family: 'DM Mono', monospace;
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.portfolio-gallery {
  margin-top: 4.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.masonry {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0;
}

.gallery-item {
  position: relative;
  display: inline-block;
  margin: 0;
  overflow: hidden;
  background: #1a1a1a;
  vertical-align: top;
  cursor: zoom-in;
}

.gallery-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.gallery-item:nth-child(2),
.gallery-item:nth-child(4) { padding-top: 0; }

.gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none;
  margin: 0;
  object-fit: cover;
  background: #ddd;
  transition: transform .45s cubic-bezier(.16, 1, .3, 1), filter .35s ease;
}

.gallery-item:hover img {
  filter: none;
  transform: scale(1.02);
}

.gallery-item figcaption {
  position: absolute;
  inset: auto 0 0;
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .7rem .75rem;
  color: rgba(255, 255, 255, .86);
  font-family: 'DM Mono', monospace;
  font-size: .58rem;
  line-height: 1.35;
  text-align: left;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, .55));
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}

.gallery-item:hover figcaption,
.gallery-item:focus-within figcaption { opacity: 1; }

.gallery-item figcaption strong {
  color: #fff;
  font-weight: 400;
}

/* Justified row layout (Pixieset-style) */
.masonry.is-justified {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-content: start;
}

.masonry.is-justified .gallery-item {
  flex: 0 0 auto;
  height: var(--row-h, 220px);
  width: auto;
}

.masonry.is-justified .gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.masonry.is-justified .gallery-item.is-row-fill {
  flex-grow: 1;
}

/* Full-screen photo viewer */
body.lightbox-open {
  overflow: hidden;
}

.photo-lightbox {
  --lightbox-pad-top: 3.25rem;
  --lightbox-pad-x: 3.75rem;
  --lightbox-pad-bottom: 1.5rem;
  --lightbox-caption: 2.25rem;
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  padding: var(--lightbox-pad-top) var(--lightbox-pad-x) var(--lightbox-pad-bottom);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s cubic-bezier(.23, 1, .32, 1);
}

.photo-lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.photo-lightbox[hidden] {
  display: none;
}

.photo-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 8, .92);
  cursor: zoom-out;
}

.photo-lightbox__figure {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  width: 100%;
  max-width: min(96vw, 2400px);
  max-height: calc(100dvh - var(--lightbox-pad-top) - var(--lightbox-pad-bottom));
  margin: 0;
  transform: scale(.97);
  transition: transform .22s cubic-bezier(.23, 1, .32, 1);
}

.photo-lightbox.is-open .photo-lightbox__figure {
  transform: scale(1);
}

.photo-lightbox__img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(
    100dvh - var(--lightbox-pad-top) - var(--lightbox-pad-bottom) - var(--lightbox-caption)
  );
  object-fit: contain;
  object-position: center;
  background: transparent;
  box-shadow: 0 18px 48px rgba(0, 0, 0, .45);
}

.photo-lightbox__caption {
  flex: 0 0 auto;
  max-width: 36rem;
  min-height: 1.1rem;
  color: rgba(255, 255, 255, .72);
  font-family: 'DM Mono', monospace;
  font-size: .68rem;
  letter-spacing: .06em;
  text-align: center;
}

.photo-lightbox__close,
.photo-lightbox__nav {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, .78);
  cursor: pointer;
  transition: color .2s ease, transform .15s ease, opacity .2s ease;
}

.photo-lightbox__close:hover,
.photo-lightbox__nav:hover {
  color: #fff;
}

.photo-lightbox__close:active {
  transform: scale(.94);
}

.photo-lightbox__nav:active {
  transform: translateY(-50%) scale(.94);
}

.photo-lightbox__close:focus-visible,
.photo-lightbox__nav:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.photo-lightbox__close {
  top: .85rem;
  right: .85rem;
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.85rem;
  line-height: 1;
}

.photo-lightbox__nav {
  top: 50%;
  width: 3rem;
  height: 3.5rem;
  font-size: 2.4rem;
  line-height: 1;
  transform: translateY(-50%);
}

.photo-lightbox__nav--prev { left: .35rem; }
.photo-lightbox__nav--next { right: .35rem; }

.photo-lightbox__nav[hidden] { display: none; }

.portfolio-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: .64rem;
}

.portfolio-footer a {
  text-decoration: underline;
  text-underline-offset: .18rem;
  transition: color .25s ease;
}

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

@media (max-width: 767px) {
  :root { --pad: 1rem; }
  .portfolio-page { padding: 3rem 1rem 4rem; }
  .masonry.is-justified { gap: 4px; }
  .masonry.is-justified .gallery-item { height: var(--row-h, 140px); }

  .photo-lightbox {
    --lightbox-pad-top: 3rem;
    --lightbox-pad-x: .85rem;
    --lightbox-pad-bottom: 1.25rem;
    --lightbox-caption: 2.5rem;
  }

  .photo-lightbox__nav {
    width: 2.5rem;
    height: 3rem;
    font-size: 2rem;
  }

  .photo-lightbox__nav--prev { left: 0; }
  .photo-lightbox__nav--next { right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}