/* ============================================================
   Library shelf (promoted from insights/mockups/library/f-dense-mosaic.html)
   Light hero · dark series · packed mosaic. Scoped to .library-index.
   ============================================================ */

html.library-index {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

html.library-index,
body.library-index {
  background: #ffffff;
  color: #0c1017;
  font-family: "Instrument Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

body.library-index {
  --ink: #0c1017;
  --paper: #ffffff;
  --soft: rgba(12, 16, 23, 0.72);
  --dim: rgba(12, 16, 23, 0.45);
  --line: rgba(12, 16, 23, 0.12);
  --hot: #c24a1a;
  --soft-dark: rgba(244, 242, 236, 0.72);
  --dim-dark: rgba(244, 242, 236, 0.45);
  --line-dark: rgba(244, 242, 236, 0.14);
  --hot-dark: #f08a4a;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sfd: #3d8f78;
  --tp: #c4a06a;
  --et: #6a8fb8;
  --im: #2aa8a0;
}

.library-index a { color: inherit; text-decoration: none; }

.library-index h1,
.library-index h2,
.library-index h3,
.library-index p {
  margin: 0;
  text-align: left;
  text-shadow: none;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  font-family: inherit;
  font-weight: inherit;
}

.library-index main,
.library-index main > section,
.library-index main > header {
  background: transparent;
  padding: 0;
}

.library-index .main-nav,
.library-index .main-nav.scrolled {
  background-color: rgba(255, 255, 255, 0.98) !important;
  border-bottom: 1px solid var(--line) !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.library-index .nav-links li a.active {
  background: none !important;
  color: var(--hot) !important;
  box-shadow: none !important;
}
.library-index .nav-links li a.active::after {
  content: "" !important;
  position: absolute !important;
  bottom: -4px !important;
  left: 0 !important;
  right: 0 !important;
  width: auto !important;
  height: 2px !important;
  background-color: var(--hot) !important;
  transform: none !important;
}
.library-index .nav-links li a:hover {
  background-color: rgba(12, 16, 23, 0.05) !important;
  color: var(--hot) !important;
}

/* ---- HERO ---- */
.library-index .lib-hero {
  position: relative;
  min-height: calc(88svh - 4rem);
  display: grid;
  padding: clamp(3.5rem, 8vh, 5rem) clamp(1.2rem, 4vw, 3rem) 3rem;
  gap: 2.5rem;
  align-content: end;
  background:
    radial-gradient(ellipse 70% 55% at 90% -5%, rgba(194, 74, 26, 0.08), transparent 55%),
    radial-gradient(ellipse 45% 40% at 0% 100%, rgba(47, 111, 94, 0.05), transparent 50%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 980px) {
  .library-index .lib-hero {
    grid-template-columns: 1.2fr 0.9fr;
    align-items: end;
    gap: 3rem;
  }
}
.library-index .lib-hero__title {
  margin: 0 0 1.1rem;
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: clamp(4.2rem, 14vw, 9rem);
  line-height: 0.86;
  letter-spacing: -0.055em;
  color: var(--ink);
}
.library-index .lib-hero__title span {
  display: block;
  color: var(--hot);
  font-style: italic;
}
.library-index .lib-hero__line {
  margin: 0 0 0.65rem;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--soft);
  max-width: 18em;
}
/* Spacer only: holds the height of the cut hero sub so the section doesn't shrink. */
.library-index .lib-hero__sub {
  margin: 0;
  max-width: 32rem;
  min-height: 4.5rem;
  font-size: 0.98rem;
  line-height: 1.5;
}

.library-index .lib-map {
  display: grid;
  gap: 2rem;
  padding-top: 0.5rem;
}
@media (min-width: 980px) {
  .library-index .lib-map {
    border-left: 1px solid var(--line);
    padding-left: 1.75rem;
  }
}
.library-index .lib-map__label {
  margin: 0 0 0.75rem;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--dim);
}
.library-index .lib-map__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.15rem;
}
.library-index .lib-map__list a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.65rem;
  align-items: baseline;
  padding: 0.55rem 0;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}
.library-index .lib-map__list a:hover { color: var(--hot); }
.library-index .lib-map__dot {
  width: 0.4rem;
  height: 0.4rem;
  margin-top: 0.35rem;
  display: inline-block;
}
.library-index .lib-map__n {
  font-size: 0.78rem;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}
.library-index .lib-map__dot--sfd { background: var(--sfd); }
.library-index .lib-map__dot--tp { background: var(--tp); }
.library-index .lib-map__dot--et { background: var(--et); }
.library-index .lib-map__dot--im { background: var(--im); }

/* ---- SERIES ---- */
.library-index .lib-series {
  background: #0c1017;
  color: #f4f2ec;
  padding: 0;
}
.library-index .lib-series__intro {
  padding: 2rem clamp(1.2rem, 4vw, 3rem) 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  align-items: baseline;
}
.library-index .lib-series__intro h2 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  color: #f4f2ec;
}
.library-index .lib-series__intro p {
  margin: 0;
  color: var(--dim-dark);
  font-size: 0.92rem;
  max-width: 28rem;
}
.library-index .lib-doors {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-dark);
}
@media (min-width: 800px) {
  .library-index .lib-doors { grid-template-columns: repeat(4, 1fr); }
}
.library-index .lib-door {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.35rem 1.2rem 1.5rem;
  border-bottom: 1px solid var(--line-dark);
  min-height: 14rem;
  transition: background 0.2s ease;
  color: #f4f2ec;
}
@media (min-width: 800px) {
  .library-index .lib-door {
    border-bottom: none;
    border-right: 1px solid var(--line-dark);
    min-height: 16rem;
  }
  .library-index .lib-door:last-child { border-right: none; }
}
.library-index .lib-door:hover { background: rgba(244, 242, 236, 0.04); }
.library-index .lib-door__n {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--dim-dark);
  font-weight: 600;
}
.library-index .lib-door__name {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  letter-spacing: -0.025em;
  line-height: 1.1;
}
.library-index .lib-door:hover .lib-door__name { color: var(--hot-dark); }
.library-index .lib-door__line {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--dim-dark);
}
.library-index .lib-door__peek {
  margin: auto 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: rgba(244, 242, 236, 0.4);
}

/* ---- MOSAIC ---- */
.library-index .lib-paper {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(2.5rem, 5vh, 3.5rem) clamp(1rem, 3vw, 2rem) 4rem;
}
.library-index .lib-paper__head {
  max-width: 40rem;
  margin: 0 auto 1.5rem;
  padding: 0 0.25rem;
}
.library-index .lib-paper__kicker {
  margin: 0 0 0.4rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--hot);
}
.library-index .lib-paper__title {
  margin: 0 0 0.5rem;
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  letter-spacing: -0.035em;
  line-height: 1.05;
}
.library-index .lib-paper__lede {
  margin: 0;
  color: var(--soft);
  font-size: 1.02rem;
  line-height: 1.45;
}

.library-index .lib-mosaic {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--line);
  max-width: 72rem;
  margin: 0 auto;
}
@media (min-width: 640px) {
  .library-index .lib-mosaic { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .library-index .lib-mosaic { grid-template-columns: repeat(3, 1fr); }
}

.library-index .lib-cell {
  min-height: 11rem;
  padding: 1.15rem 1.15rem 1.2rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  background: #fff;
  transition: background 0.15s ease, color 0.15s ease;
  margin: 0;
  box-sizing: border-box;
}

.library-index .lib-cell--group {
  background: #0c1017;
  color: #f4f2ec;
  justify-content: space-between;
  border-right-color: rgba(244, 242, 236, 0.1);
  border-bottom-color: rgba(244, 242, 236, 0.1);
}
.library-index .lib-cell--group .lib-cell__kicker {
  margin: 0;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(244, 242, 236, 0.4);
}
.library-index .lib-cell--group .lib-cell__title {
  margin: 0.75rem 0 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: #f4f2ec;
}
.library-index .lib-cell--group .lib-cell__title a:hover { color: var(--hot-dark); }
.library-index .lib-cell--group .lib-cell__meta {
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.78rem;
  color: rgba(244, 242, 236, 0.4);
  letter-spacing: 0.04em;
}

.library-index .lib-cell--article .lib-cell__meta {
  margin: 0 0 0.5rem;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--dim);
}
.library-index .lib-cell--article .lib-cell__title {
  margin: 0 0 0.45rem;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.12rem, 1.5vw, 1.32rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
}
.library-index .lib-cell--article .lib-cell__lede {
  margin: auto 0 0;
  padding-top: 0.6rem;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--dim);
}
.library-index .lib-cell--article:hover {
  background: #0c1017;
  color: #f4f2ec;
  border-right-color: rgba(244, 242, 236, 0.1);
  border-bottom-color: rgba(244, 242, 236, 0.1);
}
.library-index .lib-cell--article:hover .lib-cell__title { color: #f4f2ec; }
.library-index .lib-cell--article:hover .lib-cell__meta,
.library-index .lib-cell--article:hover .lib-cell__lede {
  color: rgba(244, 242, 236, 0.5);
}

.library-index .lib-close {
  background: var(--paper);
  color: var(--soft);
  padding: 2rem clamp(1.2rem, 4vw, 3rem) 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.95rem;
}
.library-index .lib-close a {
  color: var(--hot);
  font-weight: 600;
}

.library-index .site-footer {
  background: #ffffff !important;
  border-top: none;
  color: var(--dim);
  padding-top: 0;
  padding-bottom: clamp(28px, 4vh, 40px);
}
.library-index .site-footer p { color: var(--dim); }
.library-index .site-footer .footer-social { display: none; }

.library-index [data-render-state="loading"],
.library-index [data-render-state="error"] {
  font-size: 0.92rem;
  color: var(--dim);
  padding: 1rem;
  grid-column: 1 / -1;
}
.library-index [data-render-state="error"] { color: var(--hot); }

@media (max-width: 640px) {
  .library-index .lib-hero {
    min-height: 0;
    padding-top: 3rem;
  }
}