:root {
  --ink: #172033;
  --navy: #0d2d50;
  --muted: #607086;
  --quiet: #8390a2;
  --canvas: #f3f6f9;
  --surface: #ffffff;
  --surface-blue: #f4f8fd;
  --line: #d5dee8;
  --line-strong: #bac8d7;
  --accent: #1769d2;
  --accent-dark: #0c4ea4;
  --danger: #ad2929;
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { margin: 0; background: var(--canvas); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.55; }
a { color: var(--accent-dark); text-decoration-color: #9ab9dd; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--accent); text-decoration-color: currentColor; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: #cfe2fa; color: var(--navy); }

.skip-link { position: fixed; top: -4rem; left: 1rem; z-index: 20; padding: 0.55rem 0.8rem; border-radius: 0.25rem; background: var(--navy); color: #fff; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; min-height: 4.1rem; align-items: center; justify-content: space-between; gap: 2rem; width: 100%; padding-inline: max(1.25rem, calc((100vw - 1180px) / 2)); border-bottom: 1px solid var(--line); background: rgb(255 255 255 / 94%); backdrop-filter: blur(12px); }
main, footer { width: min(1180px, calc(100% - 2.5rem)); margin-inline: auto; }
.wordmark { display: inline-flex; align-items: baseline; gap: 0.32rem; color: var(--navy); font-size: 1rem; font-weight: 720; letter-spacing: -0.025em; text-decoration: none; white-space: nowrap; }
.wordmark i { color: var(--quiet); font-size: 0.78em; font-style: normal; font-weight: 550; }
.wordmark strong { color: var(--accent); font-weight: 760; letter-spacing: 0.02em; }
.site-nav { display: flex; align-items: center; gap: 0.25rem; }
.site-nav a { padding: 0.42rem 0.65rem; border-radius: 0.3rem; color: var(--muted); font-size: 0.875rem; font-weight: 600; text-decoration: none; }
.site-nav a:hover { background: var(--surface-blue); color: var(--navy); }

h1, h2, h3 { margin: 0; color: var(--navy); font-family: var(--font); letter-spacing: -0.035em; line-height: 1.16; }
.eyebrow { margin: 0 0 0.42rem; color: var(--accent-dark); font-size: 0.76rem; font-weight: 720; letter-spacing: 0.075em; text-transform: uppercase; }
.eyebrow a { color: inherit; text-decoration: none; }
.section-heading { max-width: 54rem; margin-bottom: 1.6rem; }
.section-heading h1, .section-heading h2 { font-size: clamp(2.15rem, 4.2vw, 3.25rem); font-weight: 760; }
.section-heading > p:not(.eyebrow):not(.categories) { max-width: 52rem; margin: 0.68rem 0 0; color: var(--muted); font-size: 1.02rem; text-wrap: pretty; }

.collection { padding: 2.8rem 0 5rem; }
.category-index { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0 0 3.1rem; border: 1px solid var(--line-strong); border-radius: 0.4rem; background: var(--surface); }
.category-index a { display: flex; min-width: 0; align-items: center; justify-content: space-between; gap: 0.6rem; padding: 0.72rem 0.8rem; color: var(--navy); font-size: 0.84rem; font-weight: 680; text-decoration: none; }
.category-index a + a { border-left: 1px solid var(--line); }
.category-index a:hover { background: var(--surface-blue); color: var(--accent-dark); }
.category-index span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.category-index small { display: inline-grid; min-width: 1.55rem; height: 1.55rem; place-items: center; border: 1px solid var(--line); border-radius: 999px; background: var(--canvas); color: var(--muted); font-size: 0.72rem; font-weight: 700; }
.collection-section { scroll-margin-top: 5.5rem; }
.collection-section + .collection-section { margin-top: 3.5rem; }
.collection-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 0.9rem; padding-bottom: 0.62rem; border-bottom: 2px solid var(--navy); }
.collection-section-heading h2 { font-size: 1.3rem; font-weight: 740; }
.collection-section-heading > span { color: var(--quiet); font-size: 0.76rem; font-weight: 650; letter-spacing: 0.055em; text-transform: uppercase; white-space: nowrap; }
.category-heading-link { color: var(--navy); text-decoration: none; }
.category-heading-link:hover { color: var(--accent); text-decoration: none; }

.exhibit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.85rem; }
.exhibit-card { display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: 0.4rem; background: var(--surface); transition: border-color 140ms ease, transform 140ms ease; }
.exhibit-card:hover { border-color: #9fb4ca; transform: translateY(-1px); }
.card-heading { min-height: 5.2rem; padding: 0.9rem 0.95rem 0.72rem; }
.card-heading h3 { font-size: 1.04rem; font-weight: 720; letter-spacing: -0.02em; }
.card-heading h3 a { color: var(--navy); text-decoration: none; }
.card-heading h3 a:hover { color: var(--accent); }
.card-heading .eyebrow { margin: 0.32rem 0 0; color: var(--quiet); font-size: 0.69rem; letter-spacing: 0.06em; }
.screenshot-frame { display: grid; height: 12.25rem; place-items: center; padding: 0.72rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface-blue); }
.screenshot-frame img { width: 100%; height: 100%; border: 1px solid var(--line); background: #fff; object-fit: contain; }
.card-body { display: flex; flex: 1; flex-direction: column; padding: 0.82rem 0.95rem 0.9rem; }
.card-body p { margin: 0 0 0.75rem; color: var(--muted); font-size: 0.88rem; line-height: 1.48; text-wrap: pretty; }
.text-link, .card-link, .back-link { color: var(--accent-dark); font-size: 0.84rem; font-weight: 680; }
.card-link { width: fit-content; margin-top: auto; text-decoration: none; }
.card-link span { display: inline-block; margin-left: 0.15rem; transition: transform 140ms ease; }
.card-link:hover span { transform: translateX(2px); }

.categories-page { width: min(920px, 100%); margin: 0 auto; padding: 2.8rem 0 5rem; }
.categories-page .category-index { margin-bottom: 3.5rem; }
.category-list-section { scroll-margin-top: 5.5rem; }
.category-list-section + .category-list-section { margin-top: 3rem; }
.entry-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.entry-list li { display: grid; grid-template-columns: minmax(13rem, 0.82fr) minmax(0, 1.4fr); gap: 1.75rem; padding: 0.72rem 0.15rem; border-bottom: 1px solid var(--line); }
.entry-list li:hover { background: linear-gradient(90deg, transparent, rgb(255 255 255 / 72%) 8%, rgb(255 255 255 / 72%) 92%, transparent); }
.entry-list a { color: var(--navy); font-weight: 680; text-decoration: none; }
.entry-list a:hover { color: var(--accent); }
.entry-list span { color: var(--muted); font-size: 0.89rem; }

.categories, .tags { display: flex; flex-wrap: wrap; gap: 0.38rem; margin: 1rem 0 0; }
.categories span, .tags span { padding: 0.2rem 0.5rem; border: 1px solid var(--line); border-radius: 0.25rem; background: var(--surface-blue); color: var(--muted); font-size: 0.73rem; font-weight: 600; }
.exhibit { width: min(800px, 100%); margin: 0 auto; padding: 2.8rem 0 5rem; }
.back-link { display: inline-block; margin-bottom: 1.65rem; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.exhibit header { padding-bottom: 1.45rem; border-bottom: 2px solid var(--navy); }
.exhibit header h1 { max-width: 46rem; font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 770; }
.lede { max-width: 44rem; margin: 0.78rem 0 0; color: var(--muted); font-size: 1.08rem; line-height: 1.52; text-wrap: pretty; }
.exhibit figure { margin: 1.5rem 0 1.8rem; padding: 0.8rem; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 0.4rem; background: var(--surface); }
.exhibit figure img { width: 100%; max-height: 650px; margin-inline: auto; border: 1px solid var(--line); background: #fff; object-fit: contain; }
figcaption { margin: 0.72rem -0.8rem -0.8rem; padding: 0.48rem 0.8rem; border-top: 1px solid var(--line); color: var(--quiet); font-size: 0.74rem; }
.prose { max-width: 45rem; font-size: 1rem; line-height: 1.65; }
.prose h2 { margin: 2rem 0 0.5rem; padding-bottom: 0.35rem; border-bottom: 1px solid var(--line); font-size: 1.35rem; font-weight: 730; }
.prose h3 { margin: 1.5rem 0 0.4rem; font-size: 1.1rem; font-weight: 720; }
.prose p, .prose ul { margin: 0.85rem 0; }
.prose li + li { margin-top: 0.3rem; }
.prose code { padding: 0.1rem 0.28rem; border: 1px solid #dbe4ee; border-radius: 0.2rem; background: var(--surface-blue); color: #173a63; font-size: 0.9em; }
.prose pre { overflow: auto; padding: 1rem; border-radius: 0.35rem; background: #10243b; color: #e9f2fb; }
.source-link { margin-top: 2rem; padding-top: 0.85rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.84rem; overflow-wrap: anywhere; }

footer { padding: 1.35rem 0 2.3rem; border-top: 1px solid var(--line); color: var(--quiet); font-size: 0.78rem; }
footer p { margin: 0; }
.auth { width: min(440px, 100%); min-height: 62vh; padding: 5rem 0; }
.auth h1, .admin h1 { margin: 0 0 0.7rem; font-size: clamp(2rem, 4vw, 2.65rem); font-weight: 750; }
.auth > p:not(.eyebrow):not(.form-error) { color: var(--muted); }
form { display: grid; gap: 1rem; margin-top: 1.4rem; }
label { display: grid; gap: 0.35rem; color: var(--navy); font-size: 0.87rem; font-weight: 670; }
input, textarea, select { width: 100%; padding: 0.64rem 0.7rem; border: 1px solid var(--line-strong); border-radius: 0.3rem; background: var(--surface); color: var(--ink); font-weight: 400; }
input:hover, textarea:hover, select:hover { border-color: #96abc1; }
input:focus, textarea:focus, select:focus { outline: 3px solid rgb(23 105 210 / 16%); border-color: var(--accent); }
textarea { resize: vertical; line-height: 1.5; }
small { color: var(--muted); font-size: 0.75rem; font-weight: 450; }
button, .button { display: inline-block; width: fit-content; padding: 0.58rem 0.85rem; border: 1px solid var(--accent); border-radius: 0.3rem; background: var(--accent); color: #fff; cursor: pointer; font-weight: 680; text-decoration: none; }
button:hover, .button:hover { border-color: var(--accent-dark); background: var(--accent-dark); color: #fff; }
.form-error { padding: 0.65rem 0.8rem; border: 1px solid #e6aaa5; border-radius: 0.3rem; background: #fff2f1; color: #88221c; }
.admin { padding: 2.8rem 0 5rem; }
.admin-heading { display: flex; align-items: start; justify-content: space-between; gap: 1.5rem; padding-bottom: 1rem; border-bottom: 2px solid var(--navy); }
.admin-heading > div:last-child { display: flex; align-items: center; gap: 0.75rem; }
.inline-form { display: inline; margin: 0; }
.quiet-button { padding: 0.5rem; border-color: transparent; background: transparent; color: var(--muted); text-decoration: underline; }
.quiet-button:hover { border-color: transparent; background: transparent; color: var(--navy); }
table { width: 100%; margin-top: 1.25rem; border-collapse: separate; border: 1px solid var(--line); border-radius: 0.4rem; border-spacing: 0; background: var(--surface); text-align: left; overflow: hidden; }
th, td { padding: 0.72rem 0.75rem; border-bottom: 1px solid var(--line); }
th { background: var(--surface-blue); color: var(--muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.045em; text-transform: uppercase; }
tbody tr:hover { background: #f8fbff; }
tr:last-child td { border-bottom: 0; }
td a { color: var(--navy); font-weight: 650; text-decoration: none; }
td a:hover { color: var(--accent); }
td small { display: block; }
.status { padding: 0.14rem 0.42rem; border: 1px solid var(--line); border-radius: 0.25rem; background: #f0f3f6; color: var(--muted); font-size: 0.74rem; text-transform: capitalize; }
.status.published { border-color: #a9d9c7; background: #e8f7f1; color: #087052; }
.edit { max-width: 860px; margin: 0 auto; }
.edit .back-link { margin-bottom: 1.2rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.editor-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.secondary-button { border-color: var(--line-strong); background: var(--surface); color: var(--navy); }
.secondary-button:hover { border-color: #96abc1; background: var(--surface-blue); color: var(--navy); }
.delete-form { margin-top: 3rem; padding-top: 1.15rem; border-top: 1px solid var(--line); }
.danger-button { border-color: var(--danger); background: var(--danger); }
.preview { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.preview h2 { font-size: 1.6rem; }
.preview img { margin: 1rem 0; border: 1px solid var(--line); }

@media (max-width: 900px) {
  .exhibit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-index { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .category-index a:nth-child(4) { border-left: 0; border-top: 1px solid var(--line); }
  .category-index a:nth-child(5) { border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .site-header { min-height: 3.8rem; padding-inline: 1rem; }
  main, footer { width: min(100% - 2rem, 1180px); }
  .site-nav { gap: 0; }
  .site-nav a { padding-inline: 0.45rem; font-size: 0.8rem; }
  .wordmark i { display: none; }
  .collection, .categories-page, .exhibit, .admin { padding-top: 2rem; }
  .category-index { grid-template-columns: 1fr 1fr; }
  .category-index a { border-top: 1px solid var(--line); }
  .category-index a:nth-child(-n + 2) { border-top: 0; }
  .category-index a:nth-child(odd) { border-left: 0; }
  .category-index a:nth-child(even) { border-left: 1px solid var(--line); }
  .exhibit-grid, .field-row { grid-template-columns: 1fr; }
  .card-heading { min-height: auto; }
  .entry-list li { grid-template-columns: 1fr; gap: 0.2rem; }
  .admin-heading { display: block; }
  .admin-heading > div:last-child { margin-top: 1rem; }
  table { font-size: 0.85rem; }
  th:nth-child(2), td:nth-child(2), th:nth-child(4), td:nth-child(4) { display: none; }
}

@media (max-width: 430px) {
  .wordmark span { display: none; }
  .site-nav a { padding-inline: 0.38rem; }
  .category-index { grid-template-columns: 1fr; }
  .category-index a, .category-index a:nth-child(n) { border-top: 1px solid var(--line); border-left: 0; }
  .category-index a:first-child { border-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .exhibit-card, .card-link span { transition: none; }
}