/* === LARGER LOGO === */

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 2rem;
  width: 2rem;
}

/* === CENTER ALL TABLES === */

.md-typeset table:not([class]) {
  margin-left: auto;
  margin-right: auto;
  display: table;
}

/* === CENTER ALL MERMAID DIAGRAMS === */

.mermaid {
  text-align: center;
  display: flex;
  justify-content: center;
}

pre.mermaid {
  background: none;
  border: none;
  display: flex;
  justify-content: center;
}

/* === TIER CARDS (for architecture/structural diagrams) === */

.tier-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 600px;
  margin: 1.5rem auto;
}

.tier-card {
  padding: 1.2rem 1.5rem;
  border: 1px solid rgba(128, 128, 128, 0.2);
}

.tier-card:first-child {
  border-radius: 10px 10px 0 0;
}

.tier-card:last-child {
  border-radius: 0 0 10px 10px;
}

.tier-card h4 {
  margin: 0 0 0.4rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tier-card p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.75;
}

.tier-card code {
  font-size: 0.82em;
}

/* Tier variants */
.tier-card--danger {
  background: rgba(255, 55, 55, 0.08);
  border-color: rgba(255, 55, 55, 0.25);
}

.tier-card--danger h4 {
  color: #ff4d4d;
}

.tier-card--muted {
  background: rgba(128, 128, 128, 0.05);
  border-color: rgba(128, 128, 128, 0.15);
}

.tier-card--muted h4 {
  color: rgba(160, 160, 160, 0.9);
}

.tier-card--dark {
  background: rgba(0, 0, 0, 0.15);
  border-color: rgba(80, 80, 80, 0.2);
}

.tier-card--dark h4 {
  color: rgba(120, 120, 120, 0.9);
}

/* === DEFENSE LAYER CARDS === */

.layer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 1.5rem 0;
}

@media (max-width: 600px) {
  .layer-grid {
    grid-template-columns: 1fr;
  }
}

.layer-card {
  background: rgba(128, 128, 128, 0.04);
  border: 1px solid rgba(128, 128, 128, 0.12);
  border-radius: 8px;
  padding: 1rem 1.2rem;
}

.layer-card__number {
  display: inline-block;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
  font-size: 0.75rem;
  width: 1.6rem;
  height: 1.6rem;
  line-height: 1.6rem;
  text-align: center;
  border-radius: 50%;
  margin-right: 0.5rem;
}

.layer-card h4 {
  display: inline;
  font-size: 0.9rem;
  margin: 0;
}

.layer-card p {
  margin: 0.4rem 0 0;
  font-size: 0.82rem;
  opacity: 0.65;
}