@font-face {
  font-family: "Playfair Display";
  src: url("/assets/fonts/playfair-display/PlayfairDisplay-VariableFont_wght.ttf") format("truetype");
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
}

@font-face {
  font-family: "Playfair Display";
  src: url("/assets/fonts/playfair-display/PlayfairDisplay-Italic-VariableFont_wght.ttf") format("truetype");
  font-style: italic;
  font-weight: 400 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --void: #07080a;
  --panel: #101216;
  --raised: #171a20;
  --chalk: #f3efe6;
  --quiet: #aaa69d;
  --faint: #6d6b66;
  --line: rgba(243, 239, 230, 0.14);
  --line-strong: rgba(243, 239, 230, 0.28);
  --gold: #cbab63;
  --focus: #84b8ff;
  --danger: #ff735c;
  --radius: 2px;
  --page-gutter: clamp(1rem, 3vw, 3rem);
  --playfair: "Playfair Display", Georgia, serif;
}

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

html {
  background: var(--void);
  color: var(--chalk);
  font-family: var(--playfair);
  scroll-behavior: smooth;
}

body { margin: 0; min-width: 320px; }

a { color: inherit; }
button, input, select { font: inherit; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  inset: 0 auto auto 1rem;
  z-index: 20;
  padding: .75rem 1rem;
  background: var(--chalk);
  color: var(--void);
  transform: translateY(-120%);
}
.skip-link:focus { transform: translateY(1rem); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.masthead {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem var(--page-gutter);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: .9rem;
  text-decoration: none;
}
.wordmark > span {
  font-family: var(--playfair);
  font-size: 1.25rem;
  letter-spacing: .14em;
}
.wordmark small,
.eyebrow,
.masthead__meta,
.filters h2,
.search > span,
.sort > span,
.reference-card__meta,
.reference-card__theme {
  font-family: var(--playfair);
  font-size: .68rem;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.wordmark small { color: var(--gold); }

.masthead__meta {
  display: flex;
  gap: clamp(1rem, 3vw, 3rem);
  color: var(--quiet);
}
.masthead__meta strong { color: var(--chalk); font-weight: 400; }

main { padding: 0 var(--page-gutter) 5rem; }

.intro {
  min-height: min(58vh, 600px);
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, .65fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 8rem);
  padding: clamp(4rem, 11vw, 9rem) 0 clamp(3rem, 7vw, 6rem);
  border-bottom: 1px solid var(--line-strong);
}

.eyebrow { margin: 0 0 1.25rem; color: var(--gold); }

.intro h1 {
  max-width: 980px;
  margin: 0;
  font-family: var(--playfair);
  font-size: clamp(3.2rem, 8vw, 8.8rem);
  font-weight: 400;
  line-height: .88;
  letter-spacing: -.045em;
  text-transform: uppercase;
}

.intro__note {
  max-width: 34rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--gold);
  color: var(--quiet);
  font-size: clamp(.95rem, 1.2vw, 1.12rem);
  line-height: 1.55;
}
.intro__note p { margin: 0; }
.intro__note .provenance { margin-top: 1.1rem; color: var(--faint); font-size: .84rem; }
.intro__note a:hover { color: var(--chalk); }

.controls {
  position: sticky;
  top: 0;
  z-index: 8;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 220px);
  background: rgba(7, 8, 10, .92);
  border-bottom: 1px solid var(--line-strong);
  backdrop-filter: blur(16px);
}

.search,
.sort {
  min-height: 76px;
  display: grid;
  align-items: center;
  gap: 1rem;
}
.search {
  grid-template-columns: auto minmax(0, 1fr) auto;
  padding-right: 1.5rem;
}
.sort {
  grid-template-columns: auto minmax(0, 1fr);
  padding-left: 1.5rem;
  border-left: 1px solid var(--line);
}
.search > span,
.sort > span { color: var(--quiet); }
.search input,
.sort select {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--chalk);
  outline: 0;
}
.search input { font-size: clamp(1rem, 2vw, 1.45rem); }
.search input::placeholder { color: var(--faint); }
.search kbd {
  min-width: 1.8rem;
  padding: .2rem .45rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--quiet);
  font-family: var(--playfair);
  text-align: center;
}
.sort select { cursor: pointer; }

.workspace {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-top: 2rem;
}

.filters {
  position: sticky;
  top: 108px;
  align-self: start;
  max-height: calc(100vh - 132px);
  overflow: auto;
  padding-right: 1rem;
  scrollbar-width: thin;
}
.filter-group + .filter-group { margin-top: 2rem; }
.filters h2 { margin: 0 0 .75rem; color: var(--faint); font-weight: 400; }
.filter-list { display: grid; gap: 2px; }
.filter-button,
.clear-button,
.empty-state button {
  border: 0;
  background: transparent;
  color: var(--quiet);
  cursor: pointer;
  text-align: left;
}
.filter-button {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .3rem .45rem;
  border-left: 1px solid transparent;
  font-size: .85rem;
}
.filter-button span:last-child { color: var(--faint); font-family: var(--playfair); font-size: .7rem; }
.filter-button:hover { color: var(--chalk); }
.filter-button[aria-pressed="true"] {
  border-left-color: var(--gold);
  background: rgba(203, 171, 99, .08);
  color: var(--chalk);
}
.clear-button,
.empty-state button {
  margin-top: 1.5rem;
  padding-bottom: .25rem;
  border-bottom: 1px solid currentColor;
  color: var(--gold);
  font-size: .82rem;
}

.library__header {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: .3rem 0 1.25rem;
}
.library__header h2,
.library__header p {
  margin: 0;
  color: var(--quiet);
  font-family: var(--playfair);
  font-size: .74rem;
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.library__header h2 span { color: var(--chalk); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.reference-card { min-width: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.reference-card__open {
  width: 100%;
  height: 100%;
  min-height: 250px;
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr);
  padding: 0;
  border: 0;
  background: var(--void);
  color: var(--chalk);
  cursor: pointer;
  text-align: left;
  transition: background 180ms ease, transform 180ms ease;
}
.reference-card__open:hover { background: var(--panel); }
.reference-card__open:active { transform: scale(.992); }
.color-fingerprint { display: grid; min-height: 100%; background: var(--raised); }
.color-fingerprint > span { min-height: 1px; }
.reference-card__body {
  display: flex;
  flex-direction: column;
  padding: 1.15rem 1.25rem 1.1rem;
}
.reference-card__meta { min-height: 1em; color: var(--gold); }
.reference-card__title {
  margin-top: 1.9rem;
  font-family: var(--playfair);
  font-size: clamp(1.25rem, 2vw, 1.9rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -.02em;
  overflow-wrap: anywhere;
}
.reference-card__summary {
  display: -webkit-box;
  margin-top: .85rem;
  overflow: hidden;
  color: var(--quiet);
  font-size: .86rem;
  line-height: 1.48;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.reference-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1.5rem;
  color: var(--faint);
  font-family: var(--playfair);
  font-size: .7rem;
}
.reference-card__theme { color: var(--quiet); }

.empty-state {
  padding: clamp(4rem, 12vw, 10rem) 1rem;
  text-align: center;
}
.empty-state h2 { margin: 0; font-family: var(--playfair); font-size: clamp(2rem, 4vw, 4rem); font-weight: 400; }
.empty-state p:not(.eyebrow) { color: var(--quiet); }

.reader {
  --reference-heading-font: var(--playfair);
  --reference-body-font: var(--playfair);
  --reference-code-font: var(--playfair);
  width: min(940px, calc(100vw - 2rem));
  max-width: none;
  height: min(92vh, 1100px);
  max-height: none;
  margin: auto 0 auto auto;
  padding: 0;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--chalk);
  font-family: var(--reference-body-font);
  box-shadow: -30px 0 100px rgba(0, 0, 0, .45);
}
.reader::backdrop { background: rgba(0, 0, 0, .72); backdrop-filter: blur(5px); }
.reader[open] { animation: reader-in 300ms cubic-bezier(.22, 1, .36, 1); }
@keyframes reader-in { from { opacity: 0; transform: translateX(3rem); } }
.reader__frame { min-height: 100%; }
.reader__header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem clamp(1.25rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(16, 18, 22, .94);
  backdrop-filter: blur(14px);
}
.reader__header .eyebrow { margin-bottom: .45rem; }
.reader__header h2 { margin: 0; font-family: var(--reference-heading-font); font-size: clamp(1.5rem, 4vw, 3rem); font-weight: 400; }
.icon-button {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: transparent;
  color: var(--chalk);
  cursor: pointer;
  font-size: 1.5rem;
}
.reader__actions {
  display: flex;
  gap: 1.5rem;
  padding: 1rem clamp(1.25rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
  color: var(--gold);
  font-family: var(--playfair);
  font-size: .75rem;
}

.markdown {
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 5rem) clamp(1.25rem, 5vw, 4rem) 8rem;
  color: #d9d5cc;
  font-size: 1rem;
  line-height: 1.7;
}
.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4 { color: var(--chalk); font-family: var(--reference-heading-font); line-height: 1.15; }
.markdown h1 { margin: 0 0 2rem; font-size: clamp(2.3rem, 6vw, 5.5rem); font-weight: 400; letter-spacing: -.03em; }
.markdown h2 { margin: 3.5rem 0 1rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: 1.65rem; }
.markdown h3 { margin: 2.2rem 0 .65rem; color: var(--gold); font-size: 1.08rem; }
.markdown h4 { margin: 1.5rem 0 .5rem; font-size: 1rem; }
.markdown p,
.markdown th,
.markdown td { font-family: var(--reference-body-font); }
.markdown p { margin: .75rem 0; }
.markdown blockquote { margin: 1.5rem 0; padding-left: 1.2rem; border-left: 2px solid var(--gold); color: var(--quiet); }
.markdown code { padding: .12em .32em; background: var(--raised); color: #bcd7ff; font-family: var(--reference-code-font); font-size: .88em; }
.markdown pre { overflow: auto; padding: 1.25rem; border: 1px solid var(--line); background: var(--void); }
.markdown pre code { padding: 0; background: transparent; color: #d7e5f9; }
.markdown ul,
.markdown ol { padding-left: 1.4rem; }
.markdown li + li { margin-top: .4rem; }
.markdown table { width: 100%; margin: 1.5rem 0; border-collapse: collapse; font-size: .86rem; }
.markdown th,
.markdown td { padding: .65rem .75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.markdown th { color: var(--gold); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }
.markdown a { color: #a9ccff; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.markdown hr { margin: 3rem 0; border: 0; border-top: 1px solid var(--line); }
.markdown .loading { color: var(--quiet); font-family: var(--playfair); }

@media (max-width: 1050px) {
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .masthead { align-items: flex-start; }
  .masthead__meta { display: grid; gap: .3rem; text-align: right; }
  .intro { min-height: auto; grid-template-columns: 1fr; align-items: start; gap: 2.5rem; padding-top: 5rem; }
  .controls { grid-template-columns: 1fr; }
  .search { padding: 1rem 0; }
  .sort { min-height: 54px; padding: 0; border-top: 1px solid var(--line); border-left: 0; }
  .workspace { grid-template-columns: 1fr; }
  .filters { position: static; display: grid; grid-template-columns: 1fr 1fr; max-height: none; padding: 0; }
  .filter-group + .filter-group { margin-top: 0; }
  .filter-list { max-height: 170px; overflow: auto; }
  .clear-button { grid-column: 1 / -1; justify-self: start; }
  .reader { width: 100vw; height: 100vh; border: 0; }
}

@media (max-width: 520px) {
  .wordmark small { display: none; }
  .intro h1 { font-size: clamp(2.8rem, 15vw, 5rem); }
  .search { grid-template-columns: 1fr auto; gap: .5rem; }
  .search > span { grid-column: 1 / -1; }
  .workspace { gap: 2rem; }
  .card-grid { grid-template-columns: 1fr; }
  .reference-card__open { min-height: 220px; }
  .library__header { display: grid; gap: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}