:root {
  --bg: #0a0b0d;
  --surface: #16181c;
  --surface-2: #1e2126;
  --ink: #f2f1ec;
  --ink-muted: #9a9fa8;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.14);
  --border: #2a2d33;
  --shadow: 0 1px 2px rgba(0,0,0,0.4), 0 12px 32px rgba(0,0,0,0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

header.site {
  padding: 22px 40px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

header.site::after {
  content: "";
  position: absolute;
  left: 40px;
  right: 40px;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 28%);
  opacity: 0.6;
}

header.site a.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
}

header.site .brand-name {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 21px;
  font-weight: 600;
  font-style: italic;
  color: var(--ink);
  letter-spacing: -0.005em;
}

header.site .brand-tagline {
  font-family: "Inter", -apple-system, "Segoe UI", sans-serif;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}

header.site .api-link {
  font-family: "Inter", -apple-system, "Segoe UI", sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  transition: border-color 0.14s ease, color 0.14s ease;
}

header.site .api-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

header.site .api-link-note {
  color: var(--ink-muted);
  font-weight: 400;
  opacity: 0.75;
}

@media (max-width: 640px) {
  header.site a.brand { flex-direction: column; align-items: flex-start; gap: 4px; }
}

nav.crumbs {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 40px 0;
  font-size: 12.5px;
  letter-spacing: 0.01em;
  color: var(--ink-muted);
}

nav.crumbs a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

nav.crumbs a:hover { text-decoration: underline; }

nav.crumbs .sep {
  margin: 0 8px;
  opacity: 0.4;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px 40px 96px;
}

h1.page-title {
  font-size: 30px;
  font-weight: 700;
  margin: 6px 0 6px;
  line-height: 1.2;
  text-wrap: balance;
  letter-spacing: -0.015em;
  color: var(--ink);
}

p.collection-tag {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  margin: 0 0 28px;
  font-weight: 700;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.collection-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: transform 0.14s ease, border-color 0.14s ease;
}

.collection-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.collection-card .card-media {
  height: 132px;
  background-size: cover;
  background-position: center;
  position: relative;
  filter: grayscale(55%) contrast(112%) brightness(0.85) sepia(15%) saturate(140%) hue-rotate(130deg);
}

.collection-card .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,11,13,0) 0%, rgba(10,11,13,0.55) 70%, var(--surface) 100%);
}

.collection-card .card-media.no-image {
  background-color: var(--surface-2);
  background-image:
    radial-gradient(circle at 20% 20%, var(--accent-soft) 0%, transparent 55%),
    radial-gradient(circle at 80% 75%, var(--accent-soft) 0%, transparent 55%);
  filter: none;
}

.collection-card .card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 22px 22px;
  flex-grow: 1;
}

.collection-card .name {
  font-weight: 700;
  font-size: 17px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.collection-card .summary {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-muted);
  flex-grow: 1;
}

.collection-card .count {
  font-size: 11px;
  letter-spacing: 0.07em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 700;
  margin-top: 2px;
}

ul.listing {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

ul.listing li {
  border-bottom: 1px solid var(--border);
}

ul.listing li:last-child { border-bottom: none; }

ul.listing li a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 20px;
  text-decoration: none;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.45;
}

ul.listing li a:hover { background: var(--surface-2); }

ul.listing li a.dir { font-weight: 600; }

ul.listing li a .icon {
  font-size: 11px;
  color: var(--accent);
  width: 14px;
  flex-shrink: 0;
  text-align: center;
  margin-top: 0.5em;
}

article.reading {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.75;
  max-width: 66ch;
  white-space: pre-wrap;
  color: var(--ink);
  margin-top: 8px;
}

.empty-note {
  color: var(--ink-muted);
  font-size: 14px;
  margin-top: 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}

@media (max-width: 640px) {
  header.site, nav.crumbs, main { padding-left: 20px; padding-right: 20px; }
  h1.page-title { font-size: 24px; }
}