.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  width: var(--sidebar-width);
  min-height: 100vh;
  padding: 24px 18px;
  background: #0f172a;
  color: #dbe6f5;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.brand-hint {
  font-size: 12px;
  color: rgba(219, 230, 245, 0.72);
}

.nav-section {
  margin-top: 22px;
}

.nav-title {
  margin-bottom: 10px;
  font-size: 11px;
  color: rgba(219, 230, 245, 0.5);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  padding: 10px 12px;
  border-radius: 10px;
  color: #cad6e5;
  transition: all 0.18s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-link.active {
  background: rgba(91, 89, 214, 0.22);
  color: #fff;
}

.nav-badge {
  min-width: 26px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #dbe6f5;
  font-size: 11px;
  text-align: center;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
  font-size: 12px;
  color: rgba(219, 230, 245, 0.66);
}

.main-shell {
  flex: 1;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 28px 0;
}

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: var(--max-content-width);
  padding: 20px 28px 40px;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 18px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.entry-wrap {
  max-width: 1360px;
  margin: 0 auto;
  padding: 32px 28px 40px;
}

.entry-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
  align-items: stretch;
}

.entry-main,
.entry-side {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
}

.entry-main {
  padding: 30px;
}

.entry-side {
  padding: 24px;
}

.page-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 1320px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 1120px) {
  .sidebar {
    display: none;
  }

  .topbar,
  .page-content {
    padding-left: 20px;
    padding-right: 20px;
  }

  .grid-2,
  .grid-3,
  .entry-hero {
    grid-template-columns: 1fr;
  }
}