/* Global Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Topbar */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  background: white;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-wordmark {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-blue);
}

.topbar-separator {
  color: var(--border);
}

.topbar-page {
  font-size: 14px;
  color: var(--muted-text);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-link {
  font-size: 14px;
  color: var(--muted-text);
  cursor: pointer;
  transition: color 120ms ease;
}

.topbar-link:hover {
  color: var(--body-text);
}

.topbar-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 52px;
  left: 0;
  width: 220px;
  height: calc(100vh - 52px);
  background: white;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 90;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.sidebar-nav-items {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 40px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--muted-text);
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  transition: all 120ms ease;
  position: relative;
}

.sidebar-nav-item:hover {
  background: var(--page-bg);
  transition: all 120ms ease;
}

.sidebar-nav-item.has-submenu {
  cursor: pointer;
}

.sidebar-nav-item .chevron {
  width: 12px;
  height: 12px;
  margin-left: auto;
  transition: transform 200ms ease;
}

.sidebar-nav-item.open .chevron {
  transform: rotate(180deg);
}

.sidebar-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 160ms ease-out;
}

.sidebar-submenu.open {
  max-height: 200px;
}

.sidebar-submenu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 44px;
  font-size: 12px;
  color: var(--muted-text);
  cursor: pointer;
  transition: all 120ms ease;
}

.sidebar-submenu-item:hover {
  background: var(--page-bg);
  color: var(--body-text);
}

.sidebar-submenu-item.active {
  color: var(--primary-blue);
  background: var(--primary-blue-light);
}

.sidebar-nav-item.active {
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  border-left: 3px solid var(--primary-blue);
  padding-left: 13px;
}

.sidebar-nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 16px 12px;
}

/* Main Content */
.main-content {
  margin-top: 52px;
  margin-left: 220px;
  min-height: calc(100vh - 52px);
  padding: 24px;
}

.main-content.full-width {
  margin-left: 0;
}

.content-container {
  max-width: 1200px;
  margin: 0 auto;
}

.content-container.narrow {
  max-width: 720px;
}

/* Page Header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--body-text);
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card-header {
  margin-bottom: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--body-text);
  margin-bottom: 4px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--muted-text);
}

/* Section Labels */
.section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted-text);
  margin-bottom: 12px;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* Spacing Utilities */
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }