:root {
  color-scheme: dark;
  --void: #0c090c;
  --paper: #100c0f;
  --panel: #171115;
  --panel-raised: #1d1518;
  --ink: #f1e8e1;
  --ink-soft: #d6c8c1;
  --muted: #a99996;
  --line: #493137;
  --line-soft: #2e2025;
  --heading: #df6654;
  --heading-hot: #f58a6c;
  --link: #c45e74;
  --link-hot: #e48698;
  --accent: #d75743;
  --accent-hot: #ef8760;
  --accent-soft: #3a1d1e;
  --focus: #ffb06f;
  --serif: Charter, "Bitstream Charter", "Iowan Old Style", Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-family: var(--sans);
  line-height: 1.66;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 6% -10%, rgb(130 38 32 / 18%), transparent 27rem),
    radial-gradient(circle at 94% 2%, rgb(73 31 66 / 16%), transparent 31rem),
    var(--paper);
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, #42151b, var(--accent-hot) 43%, #61232a 70%, #26121a) 1;
}

a {
  color: var(--link);
  text-underline-offset: 0.16em;
  text-decoration-color: rgb(196 94 116 / 58%);
}

a:hover { color: var(--link-hot); text-decoration-color: currentcolor; }
a:focus-visible,
button:focus-visible,
input:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  width: min(1180px, calc(100% - 2.8rem));
  margin: 0 auto;
  padding: 1.35rem 0 1rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.55rem, 4vw, 2.15rem);
  font-style: italic;
  font-weight: 600;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.wordmark::after {
  display: inline-block;
  width: 2.4rem;
  height: 1px;
  margin: 0 0 0.28rem 0.7rem;
  background: linear-gradient(90deg, var(--accent-hot), transparent);
  content: "";
}

.wordmark:hover { color: var(--accent-hot); }

.shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  grid-template-areas: "content sidebar";
  gap: 4rem;
  width: min(1180px, calc(100% - 2.8rem));
  margin: 2.5rem auto 5rem;
}

main {
  grid-area: content;
  min-width: 0;
  max-width: 740px;
}

.search-mode main { max-width: none; }

.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 1rem;
  align-self: start;
  padding-left: 1.25rem;
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.sidebar label,
.nav-category > a {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.025em;
  text-decoration: none;
}

.search-wrap { position: relative; }

input[type="search"] {
  width: 100%;
  margin-top: 0.45rem;
  padding: 0.62rem 2.5rem 0.62rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  background: rgb(12 9 12 / 72%);
  font: inherit;
}

.search-clear {
  position: absolute;
  top: 50%;
  right: 0.45rem;
  width: 1.7rem;
  height: 1.7rem;
  padding: 0;
  transform: translateY(-42%);
  border: 0;
  color: var(--muted);
  background: transparent;
  font: 1.1rem/1 var(--mono);
  cursor: pointer;
}

.search-clear:hover { color: var(--link-hot); }

input[type="search"]:focus {
  border-color: var(--accent);
  outline: 2px solid rgb(224 96 63 / 24%);
  outline-offset: 2px;
}

input[type="search"]::-webkit-search-cancel-button { appearance: none; }

.search-note {
  margin: 0.35rem 0 1.35rem;
  color: var(--muted);
  font-size: 0.7rem;
}

.search-note kbd {
  padding: 0.03rem 0.2rem;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  font: inherit;
}

.search-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.5rem;
}

.search-tokens[hidden] { display: none; }

.search-tokens button {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  max-width: 100%;
  padding: 0.18rem 0.38rem;
  border: 1px solid var(--line);
  color: var(--link);
  background: var(--panel);
  font: 0.7rem/1.35 var(--mono);
  cursor: pointer;
}

.search-tokens button:hover {
  border-color: var(--link);
  color: var(--link-hot);
}

.tag-suggestions {
  position: absolute;
  z-index: 10;
  inset: calc(100% - 1px) 0 auto;
  margin: 0;
  padding: 0.3rem;
  border: 1px solid var(--line);
  background: var(--panel-raised);
  box-shadow: 0 1rem 2.5rem rgb(0 0 0 / 38%);
  list-style: none;
}

.tag-suggestions button {
  width: 100%;
  padding: 0.35rem 0.45rem;
  border: 0;
  color: var(--ink);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.tag-suggestions button:hover,
.tag-suggestions button[aria-selected="true"] { background: var(--accent-soft); }

.resource-nav-list,
.resource-nav-list ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.resource-tree > summary { display: none; }
.resource-tree:not([open]) > #resource-nav { display: block; }

.nav-category { margin: 0 0 1.15rem; }
.nav-category ul { margin-top: 0.35rem; }
.nav-category li { margin: 0.28rem 0; }
.nav-category .count { color: var(--muted); }
.nav-category .active { font-weight: 700; text-decoration: underline; }

.eyebrow,
.post-meta,
.breadcrumbs,
.post-tags,
.entry-date,
.reference-list,
.resource-outline span,
.collection-heading > span,
.browse-link,
.permalink,
.load-more {
  font-family: var(--mono);
}

.eyebrow,
.breadcrumbs {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1rem;
  color: var(--heading);
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.guide-intro { margin: 0 0 2rem; color: var(--muted); }

main > h2 {
  margin: 2rem 0 1.1rem;
  color: var(--heading);
  font-family: var(--serif);
  font-size: clamp(1.65rem, 4vw, 2.3rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.guide-home { border-top: 0; }

.guide-category {
  scroll-margin-top: 1rem;
  padding: 0 0 1rem;
}

.category-heading h3 {
  margin: 1.9rem 0 0.45rem;
  color: var(--heading);
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.category-heading h3 a,
.collection-heading h2 a,
.collection-heading h3 a,
.collection-heading h4 a {
  color: var(--heading);
  text-decoration: none;
}

.category-heading h3 a:hover,
.collection-heading h2 a:hover,
.collection-heading h3 a:hover,
.collection-heading h4 a:hover {
  color: var(--heading-hot);
  text-decoration: underline;
}

.category-heading > p:last-child,
.category-description {
  max-width: 42rem;
  margin: 0.55rem 0 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.guide-collections {
  display: grid;
  gap: 1.6rem;
  margin: 1.25rem 0 1.8rem;
}

.guide-collection {
  padding: 0;
}

.collection-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem;
  padding-bottom: 0.25rem;
}

.collection-heading h2,
.collection-heading h3,
.collection-heading h4 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-family: var(--serif);
  font-weight: 500;
}

.collection-heading h2 { font-size: clamp(1.55rem, 4vw, 2.1rem); }
.collection-heading h3 { font-size: clamp(1.3rem, 3vw, 1.65rem); }
.collection-heading h4 { font-size: 1.08rem; }

.collection-heading > span {
  flex: none;
  color: var(--muted);
  font-size: 0.7rem;
}

.guide-entry-list {
  margin: 0.35rem 0 0;
  padding-left: 1.3rem;
}

.guide-entry {
  margin: 0 0 1.15rem;
  padding: 0;
}

.entry-date {
  margin-left: 0.4rem;
  color: var(--muted);
  font-size: 0.64rem;
}

.guide-entry-title {
  color: var(--ink);
  font-weight: 600;
}

.guide-entry blockquote {
  margin: 0.45rem 0 0.9rem;
  padding-left: 1rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
}

.guide-entry blockquote > p { margin: 0 0 0.6rem; }

.reference-list {
  margin: 0.65rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.reference-list li { margin: 0.18rem 0; }
.reference-note { color: var(--muted); font-size: 0.64rem; }

.browse-link {
  margin: 0.8rem 0 0;
  font-size: 0.74rem;
}

.category-page { margin-top: 2.5rem; }

.category-collection {
  padding: 1.8rem 0 2.8rem;
  border-top: 1px solid var(--line);
}

.resource-outline {
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
}

.resource-outline li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px dotted var(--line);
}

.resource-outline li > a { color: var(--ink); text-decoration: none; }
.resource-outline li > a:hover { color: var(--heading-hot); text-decoration: underline; }
.resource-outline span { color: var(--muted); font-size: 0.67rem; white-space: nowrap; }

.post-list { display: grid; }

.reading-list { border-top: 1px solid var(--line); }

.post {
  scroll-margin-top: 1rem;
  overflow-wrap: anywhere;
}

.post:target,
.post.target-entry {
  outline: 2px solid var(--accent);
  outline-offset: 0.5rem;
  background: linear-gradient(90deg, rgb(224 96 63 / 7%), transparent 65%);
}

.reading-entry {
  padding: 2.1rem 0 2.6rem;
  border-bottom: 1px solid var(--line);
}

.post h2 {
  margin: 0.15rem 0 0.75rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.15;
}

.post h2 a { color: var(--ink); text-decoration: none; }
.post h2 a:hover { color: var(--heading-hot); text-decoration: underline; }

.post-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
}

.post-body { max-width: 48rem; }
.post-body p:last-child { margin-bottom: 0; }
.post-body blockquote { margin-left: 0; padding-left: 1rem; border-left: 2px solid var(--line); }
.post-body ul { padding-left: 1.25rem; }

.post-references {
  max-width: 48rem;
  margin-top: 1.4rem;
  padding-top: 0.8rem;
  border-top: 1px dotted var(--line);
}

.post-references h3 {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.post-media {
  display: block;
  max-width: min(100%, 36rem);
  height: auto;
  margin: 1rem 0;
  border: 1px solid var(--line);
  filter: saturate(0.92) contrast(1.02);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 1.15rem 0 0;
}

.tag {
  display: inline-block;
  padding: 0.12rem 0.35rem;
  border: 1px solid var(--line);
  color: var(--link);
  background: rgb(29 21 24 / 58%);
  font-size: 0.68rem;
  text-decoration: none;
}

.search-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.search-entry {
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--panel-raised), var(--panel));
  box-shadow: inset 0 1px rgb(255 255 255 / 3%);
}

.search-entry h2 { font-size: 1.28rem; }
.excerpt { color: var(--ink-soft); }
.permalink { margin-bottom: 0; font-size: 0.72rem; }

.load-more {
  justify-self: start;
  margin-top: 1.2rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.load-more:hover { border-color: var(--accent); color: var(--accent-hot); }

.empty,
.error,
.loading { color: var(--muted); }

#pdf-reader {
  width: min(96vw, 76rem);
  height: min(94vh, 62rem);
  padding: 0;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--panel);
}

#pdf-reader::backdrop { background: rgb(5 3 5 / 86%); }

.pdf-toolbar {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0.8rem;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.pdf-controls { display: flex; align-items: center; gap: 0.45rem; }

.pdf-controls button,
.pdf-controls a {
  padding: 0.3rem 0.45rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--panel);
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

.pdf-stage {
  min-height: calc(100% - 3rem);
  padding: 1rem;
  overflow: auto;
  text-align: center;
  background: #292529;
}

#pdf-canvas {
  max-width: none;
  height: auto;
  background: white;
  box-shadow: 0 2px 14px rgb(0 0 0 / 35%);
}

.pdf-status {
  position: absolute;
  left: 1rem;
  bottom: 0.2rem;
  margin: 0;
  color: white;
  font-family: var(--mono);
  font-size: 0.75rem;
}

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; grid-template-areas: "sidebar" "content"; gap: 1.5rem; }
  .sidebar { position: static; padding: 0 0 1rem; border: 0; border-bottom: 1px solid var(--line); }
  .search-note { margin-bottom: 0.7rem; }
  .resource-tree { border-top: 1px solid var(--line-soft); }
  .resource-tree > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.45rem 0;
    color: var(--ink-soft);
    cursor: pointer;
    font-size: 0.72rem;
    list-style-position: inside;
  }
  .resource-tree > summary span { color: var(--muted); font-size: 0.64rem; }
  .resource-tree:not([open]) > #resource-nav { display: none; }
  .resource-tree[open] > #resource-nav { padding-top: 0.8rem; }
  .resource-nav-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 1rem; }
}

@media (max-width: 620px) {
  .site-header { align-items: center; width: min(100% - 1.4rem, 1180px); }
  .shell { width: min(100% - 1.4rem, 1180px); margin-top: 1.3rem; }
  .resource-nav-list { grid-template-columns: 1fr; }
  h1 { margin-bottom: 1.8rem; }
  .guide-category { padding-block: 2rem; }
  .guide-collections { margin-left: 0; }
  .guide-collection { padding-left: 0.8rem; }
  .collection-heading { align-items: flex-start; flex-direction: column; gap: 0.2rem; }
  .resource-outline li { grid-template-columns: 1fr; gap: 0.12rem; }
  .search-grid { grid-template-columns: 1fr; }
  .pdf-toolbar { align-items: flex-start; flex-direction: column; }
  .pdf-controls { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}