/* Somateka long-form reading room.
   Shared by the four editorial collections; intentionally avoids cards,
   rounded containers and dashboard density. */

.reading-room {
  --reader-ink: #20231f;
  --reader-muted: #686a64;
  --reader-line: rgba(32, 35, 31, .24);
  --reader-paper: #f3efe7;
  --reader-deep: #182b25;
  color: var(--reader-ink);
  padding: clamp(5.5rem, 9vw, 9rem) 0;
  background:
    linear-gradient(90deg, rgba(243, 239, 231, .96), rgba(243, 239, 231, .92)),
    url("media/somateka-ivory-stone-texture-lossless-v1.webp") center / cover fixed;
  background-color: var(--reader-paper);
}

.reading-room-intro {
  display: grid;
  grid-template-columns: minmax(9rem, .55fr) minmax(0, 1.45fr) minmax(16rem, .72fr);
  gap: clamp(2rem, 5vw, 5.5rem);
  align-items: start;
  border-top: 1px solid var(--reader-line);
  padding-top: 1.5rem;
  margin-bottom: clamp(4rem, 7vw, 7rem);
}

.reader-kicker,
.reader-toc > p,
.reader-caption span,
.reader-chapter-label {
  margin: 0;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .84rem;
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.reader-kicker { color: #9f4f3c; }

.reading-room-intro h2 {
  max-width: 13ch;
  margin: -.2rem 0 0;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(3.15rem, 6vw, 6.6rem);
  font-weight: 500;
  line-height: .91;
  letter-spacing: -.055em;
}

.reading-room-intro > p:last-child {
  max-width: 33rem;
  margin: .15rem 0 0;
  color: var(--reader-muted);
  font-family: var(--sans, "Onest", sans-serif);
  font-size: clamp(1.08rem, 1.5vw, 1.28rem);
  font-weight: 430;
  line-height: 1.65;
}

.reader-layout {
  display: grid;
  grid-template-columns: minmax(10rem, .52fr) minmax(0, 1.5fr);
  gap: clamp(2.5rem, 7vw, 8rem);
  align-items: start;
}

.reader-layout > * { min-width: 0; }

.reader-toc {
  position: sticky;
  top: 7rem;
  border-top: 1px solid var(--reader-line);
  padding-top: 1.1rem;
}

.reader-toc > p { color: var(--reader-muted); }

.reader-toc ol {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: reader;
}

.reader-toc li {
  counter-increment: reader;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: .65rem;
  padding: .88rem 0;
  border-bottom: 1px solid var(--reader-line);
}

.reader-toc li::before {
  content: "0" counter(reader);
  color: #9f4f3c;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .82rem;
  font-weight: 650;
  line-height: 1.55;
}

.reader-toc a {
  color: inherit;
  text-decoration: none;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .94rem;
  font-weight: 540;
  line-height: 1.45;
}

.reader-article {
  width: min(100%, 61rem);
  min-width: 0;
}

.reader-article > p,
.reader-chapter > p:not(.reader-chapter-label) {
  max-width: 43rem;
  margin: 0 0 1.45em;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(1.12rem, 1.55vw, 1.34rem);
  font-weight: 400;
  line-height: 1.78;
  font-kerning: normal;
  font-optical-sizing: auto;
  hanging-punctuation: first last;
  hyphens: auto;
  orphans: 3;
  widows: 3;
  text-wrap: pretty;
}

.reader-article > .reader-opening {
  max-width: 46rem;
  margin-bottom: clamp(3rem, 6vw, 5rem);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  line-height: 1.62;
}

.reader-opening::first-letter {
  float: left;
  margin: .05em .12em 0 0;
  color: #9f4f3c;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: 4.45em;
  font-weight: 500;
  line-height: .74;
}

.reader-chapter {
  scroll-margin-top: 7rem;
  margin: clamp(4.5rem, 8vw, 8rem) 0 0;
  border-top: 1px solid var(--reader-line);
  padding-top: 1.35rem;
}

.reader-chapter-label { color: #9f4f3c; }

.reader-chapter h3 {
  max-width: 15ch;
  margin: 1.25rem 0 1.4rem;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(2.45rem, 4.5vw, 4.6rem);
  font-weight: 500;
  line-height: .98;
  letter-spacing: -.045em;
  text-wrap: balance;
  hyphens: auto;
  overflow-wrap: break-word;
}

.reader-figure {
  position: relative;
  margin: clamp(3rem, 6vw, 6rem) 0;
  background: #d8d0c3;
  overflow: hidden;
}

.reader-figure img {
  display: block;
  width: 100%;
  height: clamp(25rem, 52vw, 43rem);
  object-fit: cover;
}

.reader-figure.is-responsive-diagram img {
  height: auto;
  object-fit: contain;
}

.reader-figure.is-contain img {
  object-fit: contain;
  background: #e8e2d8;
}

.reader-figure.is-dark img { filter: saturate(.84) contrast(1.03); }

.reader-caption {
  display: grid;
  grid-template-columns: minmax(8rem, .45fr) minmax(0, 1.2fr);
  gap: 2rem;
  padding: 1.25rem 1.4rem 1.45rem;
  color: #f5f0e7;
  background: var(--reader-deep);
}

.reader-caption span { color: #d2b98b; }

.reader-caption p {
  margin: 0;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: 1rem;
  font-weight: 430;
  line-height: 1.55;
}

.reader-figure-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: clamp(3rem, 6vw, 6rem) 0;
  background: var(--reader-line);
}

.reader-figure-pair figure {
  margin: 0;
  background: #e6e0d6;
}

.reader-figure-pair img {
  display: block;
  width: 100%;
  height: clamp(22rem, 38vw, 35rem);
  object-fit: cover;
}

.reader-figure-pair figcaption {
  min-height: 6.5rem;
  padding: 1.1rem 1.25rem 1.3rem;
  color: var(--reader-muted);
  background: var(--reader-paper);
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .94rem;
  font-weight: 440;
  line-height: 1.5;
}

.reader-figure-pair figcaption b {
  display: block;
  margin-bottom: .35rem;
  color: var(--reader-ink);
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: 1.25rem;
  font-weight: 530;
  line-height: 1.2;
}

.reader-rule {
  max-width: 48rem;
  margin: clamp(3rem, 6vw, 5.5rem) 0;
  padding: clamp(2rem, 4vw, 3.5rem);
  color: #f3efe7;
  background: var(--reader-deep);
}

.reader-rule span {
  display: block;
  margin-bottom: 1.3rem;
  color: #d2b98b;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .82rem;
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.reader-rule p {
  max-width: 31ch;
  margin: 0;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(1.65rem, 3.1vw, 2.8rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.025em;
}

.reader-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: clamp(3rem, 6vw, 5rem) 0;
  border-top: 1px solid var(--reader-line);
  border-bottom: 1px solid var(--reader-line);
}

.reader-facts div {
  min-height: 10.5rem;
  padding: 1.25rem 1.35rem 1.45rem 0;
  border-right: 1px solid var(--reader-line);
}

.reader-facts div + div { padding-left: 1.35rem; }
.reader-facts div:last-child { border-right: 0; }

.reader-facts b {
  display: block;
  margin-bottom: .75rem;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 500;
  line-height: 1.2;
}

.reader-facts small {
  color: var(--reader-muted);
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .93rem;
  font-weight: 430;
  line-height: 1.55;
}

.reader-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: end;
  margin-top: clamp(4rem, 8vw, 8rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--reader-line);
}

.reader-next p {
  max-width: 40rem;
  margin: 0;
  font-family: var(--serif, "Literata", Georgia, serif);
  font-size: clamp(1.45rem, 2.8vw, 2.4rem);
  font-weight: 500;
  line-height: 1.2;
}

.reader-next a {
  display: inline-flex;
  align-items: center;
  min-height: 3.5rem;
  padding: .8rem 1.15rem;
  color: #f4efe7;
  background: var(--reader-deep);
  text-decoration: none;
  font-family: var(--sans, "Onest", sans-serif);
  font-size: .9rem;
  font-weight: 620;
  line-height: 1;
}

@media (max-width: 900px) {
  .reading-room { background-attachment: scroll; }
  .reading-room-intro { grid-template-columns: 1fr; gap: 1.25rem; }
  .reading-room-intro h2 { max-width: 10ch; }
  .reader-layout { grid-template-columns: 1fr; gap: 3rem; }
  .reader-toc {
    position: static;
    display: block;
    width: 100%;
    overflow: hidden;
  }
  .reader-toc ol {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }
  .reader-toc li {
    flex: 0 0 min(15rem, 76vw);
    scroll-snap-align: start;
    border-right: 1px solid var(--reader-line);
  }
  .reader-toc li + li { padding-left: 1rem; }
  .reader-article { width: 100%; }
}

@media (max-width: 620px) {
  .reading-room { padding: 4.5rem 0; }
  .reading-room-intro { margin-bottom: 3.5rem; }
  .reading-room-intro h2 { font-size: clamp(2.75rem, 14vw, 4.4rem); }
  .reader-article > p,
  .reader-chapter > p:not(.reader-chapter-label) { font-size: 1.1875rem; line-height: 1.72; }
  .reader-article > .reader-opening { font-size: 1.28rem; line-height: 1.58; }
  .reader-opening::first-letter { font-size: 3.7em; }
  .reader-chapter { margin-top: 4.5rem; }
  .reader-chapter h3 { font-size: clamp(2.2rem, 11vw, 3.3rem); }
  .reader-figure { margin-left: calc(var(--wrap-pad, 1.25rem) * -1); margin-right: calc(var(--wrap-pad, 1.25rem) * -1); }
  .reader-figure img { height: 29rem; }
  .reader-figure.is-responsive-diagram img { height: auto; }
  .reader-caption { grid-template-columns: 1fr; gap: .55rem; }
  .reader-figure-pair { grid-template-columns: 1fr; }
  .reader-figure-pair img { height: 27rem; }
  .reader-facts { grid-template-columns: 1fr; }
  .reader-facts div,
  .reader-facts div + div { min-height: auto; padding: 1.3rem 0; border-right: 0; border-bottom: 1px solid var(--reader-line); }
  .reader-facts div:last-child { border-bottom: 0; }
  .reader-next { grid-template-columns: 1fr; align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
  .reading-room { background-attachment: scroll; }
}