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

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  background: #001529;
  color: #dbeafe;
  overflow-y: auto;
  z-index: 20;
  box-shadow: 2px 0 8px rgba(0, 21, 41, 0.18);
}

.workspace {
  width: calc(100% - var(--sidebar-width));
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  height: var(--topbar-height);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.view {
  padding: 22px 24px 32px;
}

.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.page-title {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
}

.page-subtitle {
  margin: 6px 0 0;
  color: var(--color-muted);
}

.grid {
  display: grid;
  gap: 16px;
}

.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));
}

@media (max-width: 980px) {
  .sidebar {
    width: 210px;
  }

  .workspace {
    width: calc(100% - 210px);
    margin-left: 210px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}