/**
 * layout.css
 * ------------------------------------------------------
 * Struktur layout utama aplikasi: sidebar, navbar, dan
 * area konten. Mendukung mode sidebar collapsed.
 * ------------------------------------------------------
 */

.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--navbar-height) 1fr;
  grid-template-areas:
    "sidebar navbar"
    "sidebar content";
  min-height: 100vh;
  transition: grid-template-columns var(--transition-base);
}

.app-layout.is-collapsed {
  grid-template-columns: var(--sidebar-width-collapsed) 1fr;
}

.app-sidebar {
  grid-area: sidebar;
  z-index: var(--z-sidebar);
  height: 100vh;
  position: sticky;
  top: 0;
}

.app-navbar {
  grid-area: navbar;
  z-index: var(--z-navbar);
  position: sticky;
  top: 0;
}

.app-content {
  grid-area: content;
  padding: var(--space-lg);
}

.page-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.page-header p {
  margin-top: var(--space-xs);
}

/* Grid bantu untuk kartu statistik / ringkasan */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

/* Overlay untuk sidebar drawer di layar kecil */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.4);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}