/* ================================================================
   LAYOUT — app bar, navigation, page structure
   ================================================================ */

.container, .topbar, .tabs { width: 100%; max-width: 1240px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }

/* App bar: white glass, like the site's main navigation */
.appbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 12px rgba(29,111,219,0.06);
}
.topbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 6px; }
.brand { display: flex; align-items: center; gap: 14px; color: inherit; }
.brand-logo { height: 26px; width: auto; }
.brand-divider { width: 1px; height: 24px; background: var(--border-medium); }
.brand-title { font: 700 18px 'Space Grotesk', sans-serif; color: var(--navy); }
.topbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* Navigation: gradient underline like the site's nav links */
.tabs { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.nav-link {
  position: relative; padding: 12px 14px; white-space: nowrap;
  font: 500 14px 'Space Grotesk', sans-serif; color: var(--text-medium);
  transition: color 0.2s;
}
.nav-link::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: 0; height: 2px;
  background: var(--grad-primary); border-radius: 2px; transform: scaleX(0); transition: transform 0.3s;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link.active::after { transform: scaleX(1); }

main { flex: 1; padding-top: 24px; padding-bottom: 24px; }

/* Page header */
.page-head { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; justify-content: space-between; margin-bottom: 20px; }
.page-title { font-size: 26px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.page-sub { color: var(--muted); margin: 6px 0 0; }
.page-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.crumbs { display: flex; gap: 8px; font-size: 13px; color: var(--text-light); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--primary); }

/* Grids */
.grid-2 { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 20px; }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; align-items: start; }
.settings-grid .box { margin-bottom: 0; }

.foot { padding-top: 8px; padding-bottom: 28px; }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
  .brand-divider, .topbar-actions .ghost { display: none; }
  .page-title { font-size: 22px; }
  .page-head { align-items: flex-start; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .settings-grid { grid-template-columns: minmax(0, 1fr); }
}