/* ============================================================
   /essays/ — component CSS
   --------------------------------------------------------------
   Two surfaces here:
     1. The /essays/ list page (.essays-index)  — restrained, sans.
     2. The /essays/<slug>/ reader page (.essay-page) — narrow column,
        serif body, treats the column like a printed page.
   The component CSS deliberately overrides the default `.page`
   max-width on the reader page; the inherited tokens
   (--ink, --rule, --accent, --serif, etc.) come from /shared/styles.css.
   ============================================================ */


/* ============================================================
   List page (/essays/)
   ============================================================ */

.essays-index .essays-lede {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 50ch;
  margin: 0 0 32px;
}

.essay-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
}

.essay-entry {
  display: grid;
  grid-template-columns: 9rem 1fr;
  align-items: baseline;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
}
.essay-entry:last-child { border-bottom: 1px solid var(--rule); }

.essay-dateline {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 4px;
}

.essay-entry-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
}

.essay-entry-title a {
  text-decoration: none;
  background-image: linear-gradient(var(--rule), var(--rule));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 1px;
  padding-bottom: 2px;
}
.essay-entry-title a:hover {
  color: var(--accent);
  background-image: linear-gradient(var(--accent), var(--accent));
}

.essay-summary {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0;
}

.essay-entry--empty {
  grid-template-columns: 1fr;
}

@media (max-width: 720px) {
  .essay-entry { grid-template-columns: 1fr; gap: 6px; }
  .essay-dateline { padding-top: 0; }
}


/* ============================================================
   Reader page (/essays/<slug>/)
   ============================================================ */

/* Override the inherited .page width — the reader page is a printed
   essay column, not a multi-section block layout. */
.essay-page {
  max-width: 760px;            /* ~ container; the prose itself is narrower */
  padding-top: 48px;
}

.essay-head {
  margin: 0 auto 40px;
  max-width: 65ch;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
}

.essay-head .kicker { display: block; margin-bottom: 10px; }

.essay-title {
  font-family: var(--serif);
  font-size: clamp(36px, 5.2vw, 56px);
  font-weight: 900;
  font-variation-settings: "SOFT" 30, "opsz" 144;
  letter-spacing: -0.025em;
  line-height: 1.03;
  margin: 0 0 18px;
}

.essay-back {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.essay-back a {
  color: var(--muted);
  text-decoration: none;
}
.essay-back a:hover { color: var(--accent); }


/* --- Prose -------------------------------------------------- */

.essay-prose {
  max-width: 65ch;
  margin: 0 auto;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink);
}

.essay-prose p {
  margin: 0 0 1.1em;
}

.essay-prose h2 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 2.4em 0 0.7em;
  scroll-margin-top: 80px;
}

.essay-prose h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  margin: 2em 0 0.6em;
  scroll-margin-top: 80px;
}

.essay-prose a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
}
.essay-prose a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.essay-prose strong { font-weight: 700; }
.essay-prose em { font-style: italic; }

.essay-prose ul, .essay-prose ol {
  padding-left: 1.4em;
  margin: 0 0 1.1em;
}
.essay-prose li { margin: 0 0 0.4em; }

.essay-prose blockquote {
  margin: 1.4em 0;
  padding: 0 0 0 18px;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--ink-soft);
}

.essay-prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 0 5px;
  border-radius: 2px;
}

.essay-prose pre {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 1.4em 0;
}
.essay-prose pre code {
  background: transparent;
  border: none;
  padding: 0;
}

.essay-prose hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.2em auto;
  width: 30%;
}


/* --- Inline-HTML extensions used in web4.md ---------------- */

/* Abstract block: a paper card at the top of the essay. */
.essay-prose .abstract {
  margin: 0 0 36px;
  padding: 22px 26px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
}
.essay-prose .abstract .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.essay-prose .abstract p {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  margin: 0;
  color: var(--ink-soft);
}

/* Table of contents (already authored in markdown — render as-is). */
.essay-prose .toc {
  margin: 0 0 44px;
  padding: 18px 22px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.essay-prose .toc .toc-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.essay-prose .toc ol {
  margin: 0;
  padding-left: 1.4em;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  columns: 2;
  column-gap: 32px;
}
.essay-prose .toc li { margin: 0; break-inside: avoid; }
.essay-prose .toc a {
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--rule);
}
.essay-prose .toc a:hover { color: var(--accent); border-bottom-color: var(--accent); }
@media (max-width: 600px) {
  .essay-prose .toc ol { columns: 1; }
}

/* Pull quote: a paragraph promoted to display type. */
.essay-prose .pullquote {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  margin: 1.8em 0;
  padding: 4px 0 4px 22px;
  max-width: 56ch;
}

/* Bootstrap ladder visualization: T1 → T5 rows. */
.essay-prose .ladder {
  margin: 1.8em 0;
  padding: 18px 0 4px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.essay-prose .ladder .row {
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: baseline;
  gap: 18px;
  padding: 9px 4px;
  border-bottom: 1px dashed var(--rule);
  font-family: var(--sans);
}
.essay-prose .ladder .row:last-of-type { border-bottom: none; }
.essay-prose .ladder .step {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.essay-prose .ladder .what {
  font-family: var(--sans);
  font-size: 16px;
  color: var(--ink);
}
.essay-prose .ladder .cost {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.essay-prose .ladder .row.crossed {
  background: var(--accent-soft);
  margin: 0 -8px;
  padding: 9px 12px;
  border-bottom: none;
}
.essay-prose .ladder .row.crossed .step,
.essay-prose .ladder .row.crossed .what {
  color: var(--accent);
  font-weight: 700;
}
.essay-prose .ladder .caption {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  padding: 14px 4px 8px;
  border-top: 1px solid var(--rule);
  margin-top: 8px;
}

@media (max-width: 600px) {
  .essay-prose .ladder .row {
    grid-template-columns: 2.5rem 1fr;
    grid-template-rows: auto auto;
  }
  .essay-prose .ladder .cost {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
  }
}

/* References section. */
.essay-prose .refs {
  margin: 3em 0 0;
  padding: 24px 0 8px;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.essay-prose .refs .refs-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.essay-prose .refs ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
}
.essay-prose .refs li { margin: 0 0 0.4em; }

/* BibTeX citation block. */
.essay-prose .cite-block {
  display: block;
  white-space: pre;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--muted);
  padding: 14px 16px;
  margin: 16px 0 0;
  overflow-x: auto;
}

/* Footnotes (in case future essays use [^1]). */
.essay-prose .footnote {
  font-size: 14px;
  color: var(--ink-soft);
}
.essay-prose .footnote ol { padding-left: 1.4em; }
.essay-prose sup a {
  text-decoration: none;
  color: var(--accent);
}