/* ===== MATERIALS / BLOG ===== */
.mat-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: start;
}
.mat-grid { display: flex; flex-direction: column; gap: 24px; }

/* Cards */
.mat-card {
  display: grid; grid-template-columns: 280px 1fr; gap: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: box-shadow .3s ease, transform .3s ease;
}
.mat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.mat-card--featured {
  grid-template-columns: 1fr;
  grid-template-rows: 280px auto;
}
.mat-img { background: var(--bg-3); }
.mat-img--sm { min-height: 100%; }
.mat-card--featured .mat-img { height: 280px; }
.mat-body { padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.mat-meta { display: flex; align-items: center; gap: 12px; }
.mat-tag {
  font-size: .7rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; padding: 3px 10px; border-radius: 40px;
}
.mat-tag--news    { background: rgba(201,168,76,.12); color: #a07828; }
.mat-tag--parents { background: rgba(43,168,74,.1); color: #1e8a3c; }
.mat-tag--tips    { background: rgba(227,6,19,.08); color: var(--primary); }
.mat-date { font-size: .8rem; color: var(--muted); }
.mat-body h2, .mat-body h3 { margin: 0; line-height: 1.3; }
.mat-body h2 { font-size: 1.5rem; }
.mat-body h3 { font-size: 1.1rem; }
.mat-body h2 a, .mat-body h3 a {
  color: inherit; text-decoration: none;
  transition: color var(--transition);
}
.mat-body h2 a:hover, .mat-body h3 a:hover { color: var(--primary); }
.mat-body p { margin: 0; font-size: .9rem; color: var(--muted); line-height: 1.6; flex: 1; }
.mat-author { display: flex; align-items: center; gap: 10px; font-size: .8rem; color: var(--muted); }
.mat-author-avatar { width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0; }

/* Sidebar */
.mat-sidebar { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 24px; }
.mat-widget {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
}
.mat-widget h4 {
  font-size: .85rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; margin: 0 0 16px; color: var(--muted);
}
.mat-widget--cta { background: var(--bg-alt); border-color: var(--gold-border); }
.mat-widget--cta h4 { color: var(--dark); }
.mat-widget--cta p { font-size: .875rem; color: var(--muted); margin-bottom: 16px; }
.mat-cats { list-style: none; padding: 0; margin: 0; }
.mat-cats li { border-bottom: 1px solid var(--border); }
.mat-cats li:last-child { border-bottom: none; }
.mat-cats a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; font-size: .875rem; color: var(--body);
  text-decoration: none; transition: color var(--transition);
}
.mat-cats a:hover { color: var(--primary); }
.mat-cats span { font-size: .78rem; color: var(--muted); }
.mat-popular { list-style: none; padding: 0; margin: 0; }
.mat-popular li {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 10px 0; border-bottom: 1px solid var(--border); align-items: flex-start;
}
.mat-popular li:last-child { border-bottom: none; }
.mat-popular a { font-size: .875rem; color: var(--body); text-decoration: none; flex: 1; transition: color var(--transition); }
.mat-popular a:hover { color: var(--primary); }
.mat-popular span { font-size: .75rem; color: var(--muted); white-space: nowrap; }

@media (max-width: 1100px) {
  .mat-layout { grid-template-columns: 1fr; }
  .mat-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
}
@media (max-width: 768px) {
  .mat-card { grid-template-columns: 1fr; }
  .mat-img--sm { height: 160px; }
  .mat-sidebar { grid-template-columns: 1fr; }
}