/* =============================================================
   BONA — Layout
   App shell: sidebar + main content area.
   ============================================================= */

/* ----- App shell ----- */

.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 1fr;
  min-height: 100dvh;
}

.app-sidebar {
  grid-column: 1;
  grid-row: 1;
  background-color: var(--color-surface);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
}

.app-main {
  grid-column: 2;
  grid-row: 1;
  min-width: 0; /* prevent grid blowout */
  display: flex;
  flex-direction: column;
}

/* ----- Page ----- */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.1rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  position: sticky;
  top: 0;
}

.page-header a.action {
  color: var(--color-text);
  font-weight: 500 !important;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);

  &:hover {
    background-color: var(--gray-1);
  }
}

.page-header-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.page-content {
  padding: var(--space-6) var(--space-8);
  flex: 1;
}

/* ----- Auth layout (no sidebar) ----- */

.auth {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  background-color: var(--color-bg);
}

.auth-container {
  width: 100%;
  max-width: var(--content-width-sm);
  padding: var(--space-8);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.auth-container h1 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.auth-container p {
  color: var(--color-text-subtle);
  margin-bottom: var(--space-6);
}

/* ----- Sections & panels ----- */

.panel {
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.panel-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.panel-body {
  padding: var(--space-6);
}

/* ----- Stack & cluster (common composition patterns) ----- */

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.stack--sm { gap: var(--space-2); }
.stack--lg { gap: var(--space-8); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.cluster--end   { justify-content: flex-end; }
.cluster--apart { justify-content: space-between; }