.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 320px;
  background: linear-gradient(180deg, #061b35 0%, #09284d 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  padding: 28px;
}
.brand { display: flex; gap: 14px; align-items: center; margin-bottom: 42px; }
.brand-logo { width: 48px; height: 48px; }
.brand h1 { margin: 0; font-size: 1.45rem; line-height: 1.15; }
.brand p { margin: 6px 0 0; opacity: 0.82; line-height: 1.35; }
.nav { display: grid; gap: 8px; }
.nav-item {
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #ffffff;
  padding: 14px 16px;
  text-align: left;
  opacity: 0.86;
}
.nav-item.active, .nav-item:hover { background: #1769e0; opacity: 1; }
.sidebar-footer { margin-top: auto; opacity: 0.82; font-size: 0.84rem; line-height: 1.45; }
.main { flex: 1; padding: 32px 42px; }
.page-header { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 26px; }
.page-header h2 { margin: 0; font-size: 2rem; }
.page-header p { margin: 10px 0 0; color: #526173; }
.generator-grid { display: grid; grid-template-columns: minmax(430px, 0.95fr) minmax(470px, 1.05fr); gap: 22px; }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.view { display: none; }
.view.active { display: block; }
@media (max-width: 1150px) {
  .app-shell { display: block; }
  .sidebar { width: auto; }
  .generator-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .main { padding: 20px; }
  .two-columns { grid-template-columns: 1fr; }
}