:root {
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;

  --color-bg: #0a0a0a;
  --color-white: #fff;
  --color-text: #e0e0e0;
  --color-muted: #888;
  --color-subtle: #666;
  --color-dim: #555;
  --color-faint: #444;
  --color-border: #222;
  --color-border-soft: #1a1a1a;
  --color-surface: #0f0f0f;
  --color-hover: #aaa;
  --color-active: #ddd;
  --color-hover-link: #999;

  --font-size-meta: 0.75rem;

  --gap-sm: 0.5rem;
  --gap-lg: 1.5rem;
  --pad-horizontal: 2rem;
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.5;
  padding-left: var(--pad-horizontal);
  padding-right: var(--pad-horizontal);
}

header {
  padding: 3rem 0 var(--gap-lg);
  max-width: 600px;
}

header h1 {
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--color-white);
  font-family: var(--font-mono);
}

.tagline {
  margin-top: var(--gap-sm);
  font-size: 0.85rem;
  color: var(--color-subtle);
  line-height: 1.6;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}

.control-label {
  font-size: var(--font-size-meta);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.control-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-dim);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font-family: var(--font-mono);
  transition:
    color 0.15s,
    border-color 0.15s;
}

.control-btn:hover {
  color: var(--color-hover);
  border-color: var(--color-faint);
}

.control-btn.active {
  color: var(--color-active);
  border-color: var(--color-dim);
}

.sort-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.btn-dice {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.btn-star {
  position: relative;
  bottom: 1px;
  font-size: 0.9rem;
  vertical-align: middle;
  line-height: 1;
}

.placard .star-icon {
  font-size: 0.75rem;
  color: var(--color-text);
}

.filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-controls {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}

.gallery {
  display: flex;
  flex-wrap: wrap;
  padding: 2rem 0 4rem;
  gap: 2.5rem;
}

.exhibit {
  width: calc(33.333% - 1.7rem);
  display: flex;
  flex-direction: column;
}

.exhibit-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.exhibit-media img,
.exhibit-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.placard {
  padding: 1rem 0;
}

.placard .title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.placard .title {
  color: var(--color-white);
  font-weight: 400;
}

.placard .meta {
  font-size: var(--font-size-meta);
  color: var(--color-dim);
  margin-top: var(--gap-sm);
  font-family: var(--font-mono);
}

.placard .description {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.5;
}

/* Video exhibits */

.exhibit-media.is-video::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  transition: background 0.2s;
}

.exhibit-media.is-video:hover::after {
  background: rgba(0, 0, 0, 0.55);
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.2s,
    border-color 0.2s;
  pointer-events: none;
  z-index: 1;
}

.exhibit-media.is-video:hover .play-button {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.7);
}

.play-button svg {
  width: 20px;
  height: 20px;
  fill: rgba(255, 255, 255, 0.8);
  margin-left: 3px;
}

/* Modal */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content img,
.modal-content video {
  max-width: 80vw;
  max-height: 80vh;
  display: block;
  background: #000;
}

.modal-info {
  position: absolute;
  top: 0;
  left: 0;
  padding: 1.5rem var(--pad-horizontal);
  z-index: 101;
  max-width: 400px;
}

.modal-title {
  color: var(--color-white);
  font-weight: 400;
  font-size: 0.95rem;
}

.modal-description {
  color: var(--color-muted);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  line-height: 1.4;
}

.modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  padding: 1rem;
  z-index: 101;
  transition: color 0.2s;
}

.modal-nav:hover {
  color: rgba(255, 255, 255, 0.9);
}

.modal-nav svg {
  width: 32px;
  height: 32px;
}

.modal-prev {
  left: 0;
}

.modal-next {
  right: 0;
}

footer {
  margin-top: var(--gap-lg);
  padding: var(--gap-lg) 0 2rem;
  font-family: var(--font-mono);
  font-size: var(--font-size-meta);
  color: var(--color-faint);
  line-height: 2;
  border-top: 1px solid var(--color-border);
}

footer a {
  color: var(--color-subtle);
  text-decoration: none;
}

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

@media (max-width: 900px) {
  .exhibit {
    width: calc(50% - 1.25rem);
  }
}

@media (max-width: 560px) {
  .modal-nav {
    display: none;
  }

  body {
    --pad-horizontal: 1.5rem;
  }

  header {
    padding: 2rem 0 var(--gap-lg);
  }

  .gallery {
    padding: 1rem 0 3rem;
    gap: 2rem;
  }

  .exhibit {
    width: 100%;
  }
}

@media (max-width: 430px) {
  .filter-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}