/* ============================================================================
   Burton v7 — Deep dives (category-level editor picks)
   ----------------------------------------------------------------------------
   3-4 must-reads. Visually distinct from the homepage editorial picks —
   uses a horizontal-compare layout with a bold editorial feel.
   ========================================================================= */

.deep-dives {
  padding-block: var(--space-10);
  background: var(--color-surface);
}

@media (min-width: 720px) {
  .deep-dives { padding-block: var(--space-12); }
}

@media (min-width: 900px) {
  .deep-dives { padding-block: var(--space-16); }
}

.deep-dives__header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
}

.deep-dives__title-wrap {
  max-width: 48ch;
}

.deep-dives__eyebrow {
  margin-bottom: var(--space-3);
}

.deep-dives__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--fs-2xl);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-snug);
  color: var(--color-ink);
}

/* Deep dives pulls 4 posts (numberposts=4). With 4 items the only clean
   column counts are 1, 2, or 4 — a 3-column layout always orphans the 4th.
   Use explicit breakpoints. */
.deep-dives__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 720px) {
  .deep-dives__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1100px) {
  .deep-dives__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.dive {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}

.dive:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.dive__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}

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

.dive__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-snug);
  color: var(--color-ink);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.dive__excerpt {
  font-family: var(--font-serif);
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  color: var(--color-ink-muted);
  flex: 1;
}

.dive__footer {
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}