.architecture-app {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: var(--obsidian-space-4);
  align-items: start;
}

@media (max-width: 800px) {
  .architecture-app {
    grid-template-columns: 1fr;
  }
}

.arch-nav {
  position: sticky;
  top: 5.5rem;
  display: grid;
  gap: 0.35rem;
}

.arch-nav button {
  text-align: left;
  background: transparent;
  border: 0;
  border-left: 2px solid var(--obsidian-line);
  color: var(--obsidian-muted);
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.arch-nav button.is-active {
  border-left-color: var(--obsidian-gold);
  color: var(--obsidian-ink);
}

.arch-panel {
  display: none;
}

.arch-panel.is-active {
  display: block;
}

.module-grid,
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
}

.module-card,
.log-entry {
  border: 1px solid var(--obsidian-line);
  background: var(--obsidian-bg-elevated);
  padding: 1.15rem 1.2rem;
}

.status {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.status-built { color: var(--obsidian-ok); }
.status-stub { color: var(--obsidian-gold); }
.status-later { color: var(--obsidian-faint); }

.timeline {
  display: grid;
  gap: 1rem;
  border-left: 1px solid var(--obsidian-line);
  padding-left: 1.25rem;
}

.log-entry time {
  display: block;
  color: var(--obsidian-gold);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.arch-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.arch-table th,
.arch-table td {
  border-bottom: 1px solid var(--obsidian-line);
  text-align: left;
  padding: 0.7rem 0.5rem;
  vertical-align: top;
}

.arch-table code {
  color: var(--obsidian-gold);
  font-size: 0.85em;
}