/* blog — article + index styles, layered on site.css. */

/* ---------- back link ---------- */

.backlink + .draw-clear {
  margin-left: 1rem;
}

.backlink {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-decoration-color: var(--rule);
  margin-bottom: var(--gap);
}

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

/* ---------- hero ---------- */

.post-hero {
  margin-bottom: 2rem;
  border: 1px solid var(--rule);
  background: color-mix(in srgb, var(--accent) 5%, var(--paper));
  overflow: hidden;
}

.post-hero svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- post header ---------- */

.post-head {
  margin-bottom: var(--gap);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin: 0 0 1rem;
}

.post-badge {
  color: var(--accent);
  border: 1px solid var(--accent-soft);
  padding: 0.15rem 0.5rem;
  text-transform: uppercase;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.post-meta .dot {
  color: var(--rule);
}

.post-kicker {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.9rem;
}

.post-title {
  font-size: clamp(1.85rem, 1.4rem + 2vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 0.9rem;
}

.post-standfirst {
  color: var(--muted);
  font-size: 1.0625em;
  margin: 0;
}

/* ---------- prose ---------- */

.prose h2 {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule);
  margin: var(--gap) 0 1.6rem;
}

.prose > p {
  margin: 0 0 1.15em;
}

.prose h2 {
  scroll-margin-top: 1.5rem;
}

.prose a {
  text-decoration-color: var(--accent-soft);
}

/* ---------- paper entries ---------- */

.papers {
  margin: 0;
}

.papers > li + li {
  margin-top: 1.5rem;
}

.paper {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  column-gap: 1.5rem;
  row-gap: 0.15rem;
}

.paper-title {
  font-size: 1em;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0;
}

.paper-venue {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  white-space: nowrap;
  margin: 0;
  text-align: right;
}

.paper-note {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.9375em;
  margin: 0.1rem 0 0;
  max-width: var(--measure);
}

/* ---------- index list ---------- */

.posts > li + li {
  margin-top: 1.5rem;
}

.post-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  column-gap: 1.5rem;
  row-gap: 0.15rem;
}

.post-row h3 {
  font-size: 1em;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.post-row .row-date {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  white-space: nowrap;
  margin: 0;
  text-align: right;
}

.post-row .row-note {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.9375em;
  margin: 0.1rem 0 0;
}

@media (max-width: 34rem) {
  .paper,
  .post-row {
    grid-template-columns: 1fr;
  }

  .paper-venue,
  .post-row .row-date {
    text-align: left;
    order: -1;
    margin-bottom: 0.2rem;
  }
}

/* ---------- floating table of contents ---------- */

/* Hidden by default; becomes a floating rail once there is room in the
   right margin beside the centred column. Below that, the article is
   read top to bottom and the rail is not shown. */
.toc {
  display: none;
}

@media (min-width: 74rem) {
  .toc {
    display: block;
    position: fixed;
    top: clamp(3rem, 14vh, 8.5rem);
    left: calc(50% + var(--page) / 2 + 2rem);
    width: 13rem;
    max-height: 74vh;
    overflow-y: auto;
    font-family: var(--mono);
  }

  .toc-title {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 0.9rem;
  }

  .toc ol {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--rule);
  }

  .toc li + li {
    margin-top: 0.15rem;
  }

  .toc a {
    display: block;
    padding: 0.2rem 0 0.2rem 0.85rem;
    margin-left: -1px;
    border-left: 1px solid transparent;
    font-size: 0.75rem;
    line-height: 1.4;
    color: var(--muted);
    text-decoration: none;
    transition: color 120ms ease, border-color 120ms ease;
  }

  .toc a:hover {
    color: var(--ink);
  }

  .toc a.is-active {
    color: var(--accent);
    border-left-color: var(--accent);
  }
}