@import url("https://fonts.googleapis.com/css2?family=Libre+Caslon+Text:ital,wght@0,400;0,700;1,400&family=Archivo:wght@100;200;300;400;500;600;700;800;900&display=swap");

:root {
  --font-display: "Libre Caslon Text", Georgia, serif;
  --font-body: "Archivo", -apple-system, BlinkMacSystemFont, sans-serif;

  --background: #0a0a0a;
  --foreground: #f5f5f0;
  --muted: #2a2a2a;
  --muted-foreground: #9a9a8a;
  --accent: #c084fc;
  --border: #ffffff1a;

  --header-height: 5rem;
  --page-padding: clamp(1rem, 4vw, 3rem);

  /* Thick black borders between artwork tiles */
  --gallery-gap: 12px;
}

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

html {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-body);
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-body);
  font-weight: 300;
}

body.lightbox-open {
  overflow: hidden;
}

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

button {
  font: inherit;
  color: inherit;
}

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

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--foreground);
  color: var(--background);
  transform: translateY(-200%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  transform: translateY(0);
}

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

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: 1.5rem var(--page-padding);
  background: color-mix(in oklab, var(--background) 88%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.wordmark,
.site-nav a {
  color: #d4d4cc;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  line-height: 1;
  text-transform: uppercase;
  opacity: 0.75;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.wordmark:hover,
.site-nav a:hover {
  color: var(--accent);
  opacity: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
}

/* Page */

main {
  width: 100%;
}

/* Filters / Tags */

.controls {
  position: sticky;
  top: var(--header-height);
  z-index: 40;
  padding: 1.5rem var(--page-padding);
  background: color-mix(in oklab, var(--background) 92%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition:
    transform 0.22s ease,
    opacity 0.22s ease;
  will-change: transform, opacity;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter,
.filter-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.45rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: #d4d4cc;
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  line-height: 1;
  text-transform: uppercase;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    opacity 0.2s ease;
}

.filter:hover,
.filter-button:hover {
  border-color: color-mix(in oklab, var(--accent) 65%, transparent);
  color: var(--foreground);
}

.filter.is-active,
.filter-button.is-active {
  background: var(--foreground);
  border-color: var(--foreground);
  color: var(--background);
}

/* Gallery */

.gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: minmax(120px, 18vw);
  grid-auto-flow: dense;
  gap: var(--gallery-gap);
  width: 100%;
  padding: var(--gallery-gap);
  background: #000;
}

.art-card {
  position: relative;
  display: block;
  min-width: 0;
  min-height: 0;
  margin: 0;
  overflow: hidden;
  background: linear-gradient(135deg, #111, #181818);
}

.art-card--square {
  grid-column: span 1;
  grid-row: span 1;
}

.art-card--portrait {
  grid-column: span 1;
  grid-row: span 2;
}

.art-card--landscape {
  grid-column: span 2;
  grid-row: span 1;
}

.art-card--hero {
  grid-column: span 2;
  grid-row: span 2;
}

.art-card__button {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  overflow: hidden;
}

.art-card__image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transform: scale(1.001);
  filter: grayscale(100%);
  -webkit-filter: grayscale(100%);
  transition:
    opacity 0.3s ease,
    filter 0.35s ease,
    -webkit-filter 0.35s ease,
    transform 0.5s ease;
}

.art-card__image.is-loaded {
  opacity: 1;
}

.art-card__image.is-error {
  opacity: 0.25;
}

.art-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.25rem;
  padding: 1rem;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.72),
    rgba(0, 0, 0, 0.28) 38%,
    rgba(0, 0, 0, 0)
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.art-card__title {
  color: var(--foreground);
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.art-card__meta {
  color: #d4d4cc;
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.art-card__button:hover .art-card__image,
.art-card__button:focus-visible .art-card__image,
.art-card.is-touch-active .art-card__image {
  transform: scale(1.035);
  filter: brightness(0.88) grayscale(0%);
  -webkit-filter: brightness(0.88) grayscale(0%);
}

.art-card__button:hover .art-card__overlay,
.art-card__button:focus-visible .art-card__overlay,
.art-card.is-touch-active .art-card__overlay {
  opacity: 1;
}

.artwork-error {
  grid-column: 1 / -1;
  padding: 4rem var(--page-padding);
  color: var(--muted-foreground);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Fullscreen image-only lightbox */

.lightbox {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  background: #000;
  border: 0;
  color: var(--foreground);
  overflow: hidden;
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.94);
}

.lightbox[open] {
  display: block;
}

/* Lightbox controls */

.lightbox__controls {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lightbox__close,
.lightbox__nav {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  min-height: 2rem;
  padding: 0.45rem 0.75rem;
  margin: 0;
  background: rgba(0, 0, 0, 0.62);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--foreground);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  line-height: 1;
  text-align: center;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease,
    transform 0.2s ease;
}

.lightbox__nav {
  width: 2rem;
  height: 2rem;
  padding: 0;
  font-size: 1rem;
  letter-spacing: 0;
  text-transform: none;
}

.lightbox__close:hover,
.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: color-mix(in oklab, var(--accent) 65%, transparent);
}

.lightbox__close:active,
.lightbox__nav:active {
  transform: scale(0.96);
}

.lightbox__close:disabled,
.lightbox__nav:disabled {
  cursor: default;
  opacity: 0.35;
  transform: none;
}

.lightbox__close:disabled:hover,
.lightbox__nav:disabled:hover {
  background: rgba(0, 0, 0, 0.62);
  border-color: var(--border);
}

/* Lightbox loader */

.lightbox__loader {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.lightbox.is-loading .lightbox__loader {
  display: flex;
}

.lightbox__spinner {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-top-color: var(--foreground);
  border-radius: 999px;
  animation: lightbox-spin 0.8s linear infinite;
}

@keyframes lightbox-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Lightbox image */

.lightbox__frame {
  width: 100vw;
  height: 100dvh;
  background: #000;
  overflow: auto;
  overscroll-behavior: contain;
  text-align: center;
  text-align: -webkit-center;
}

.lightbox__image {
  display: block;
  width: auto;
  height: auto;
  max-width: min(1600px, 100vw);
  max-height: none;
  margin: 0;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.lightbox__image.is-loaded {
  opacity: 1;
}

.lightbox__image.is-error {
  opacity: 0.25;
}

/* Responsive */

@media (max-width: 1100px) {
  .gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: minmax(110px, 28vw);
  }
}

@media (max-width: 760px) {
  :root {
    --header-height: auto;
    --gallery-gap: 8px;
  }

  .site-header {
    position: static;
    align-items: flex-start;
    gap: 1rem;
    padding-top: 1.5rem;
    padding-bottom: 1.25rem;
  }

  .controls {
    top: 0;
    z-index: 45;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .controls.is-hidden-on-mobile {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-105%);
  }

  .site-nav {
    gap: 1rem;
  }

  .wordmark,
  .site-nav a {
    font-size: 0.65rem;
    letter-spacing: 0.18em;
  }

  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: minmax(120px, 46vw);
  }

  .art-card--hero,
  .art-card--landscape {
    grid-column: span 2;
  }

  .art-card--portrait {
    grid-column: span 1;
    grid-row: span 2;
  }

  .art-card__overlay {
    opacity: 0;
    padding: 0.75rem;
  }

  .art-card.is-touch-active .art-card__overlay {
    opacity: 1;
  }

  .art-card__title {
    font-size: 1rem;
  }

  .art-card__meta {
    font-size: 0.6rem;
  }

  .lightbox__controls {
    top: 0.75rem;
    right: 0.75rem;
    gap: 0.4rem;
  }

  .lightbox__close,
  .lightbox__nav {
    min-width: 2rem;
    min-height: 2rem;
  }

  .lightbox__close {
    padding-right: 0.65rem;
    padding-left: 0.65rem;
    font-size: 0.62rem;
  }

  .lightbox__nav {
    width: 2rem;
    height: 2rem;
    font-size: 0.95rem;
  }

  .lightbox__image {
    max-width: 100vw;
  }
}

@media (max-width: 420px) {
  .site-header {
    flex-direction: column;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .gallery {
    grid-auto-rows: minmax(105px, 48vw);
  }
}