/* ==========================================================================
   Layout primitives: container, panel, section, grids.
   The page background is light gray; content sits in white panels, as on
   the reference site.
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  margin-block: var(--section-gap);
}

.section:first-child {
  margin-top: 0;
}

.panel {
  background: var(--color-surface);
  padding: var(--panel-padding-y) var(--panel-padding-x);
}

.panel--flush {
  padding: 0;
  overflow: hidden;
}

.panel--narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
}

.section-header {
  margin-bottom: var(--space-6);
}

.section-header--row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-3) var(--space-5);
}

.section-header--row .section-title {
  margin-bottom: 0;
}

.section-intro {
  max-width: 44rem;
  font-size: var(--text-md);
  color: var(--color-muted);
  margin: 0;
}

/* Heading with the yellow accent rule used throughout the reference site */
.section-title {
  position: relative;
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-5);
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 4.5rem;
  height: 4px;
  background: var(--color-accent);
}

/* Card grids */
.card-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

@media (min-width: 40em) {
  .card-grid--3,
  .card-grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64em) {
  .card-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .card-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.post-list {
  margin-block: var(--section-gap);
}

.page-layout {
  display: grid;
  gap: var(--space-5);
  margin-block: var(--section-gap);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 64em) {
  .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}