/* css/layout.css */
.app-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-normal);
  z-index: var(--z-sidebar);
  flex-shrink: 0;
}

.sidebar.collapsed {
  width: 72px;
}

.sidebar-logo {
  padding: var(--spacing-6) var(--spacing-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  height: 72px;
}

.sidebar-logo img {
  height: 32px;
  width: auto;
}

.sidebar-logo h2 {
  font-size: 1.25rem;
  color: var(--text-inverse);
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.sidebar-logo span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

.sidebar.collapsed .sidebar-logo h2,
.sidebar.collapsed .sidebar-logo span {
  display: none;
}

.sidebar-nav {
  flex-grow: 1;
  padding: var(--spacing-4);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.nav-section {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  padding: var(--spacing-4) var(--spacing-3) var(--spacing-2);
  letter-spacing: 0.5px;
}

.sidebar.collapsed .nav-section {
  display: none;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3);
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.sidebar-nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-inverse);
}

.sidebar-nav-item.active {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-inverse);
  font-weight: 500;
}

.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10%;
  height: 80%;
  width: 4px;
  background-color: var(--primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar-nav-item i {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar.collapsed .sidebar-nav-item span {
  display: none;
}

.sidebar-footer {
  padding: var(--spacing-4);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  cursor: pointer;
}

.sidebar-footer:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.user-info {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
}

.user-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sidebar.collapsed .user-info {
  display: none;
}

.sidebar-toggle {
  position: absolute;
  bottom: 80px;
  right: -14px;
  width: 28px;
  height: 28px;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.sidebar-toggle:hover {
  color: var(--primary);
  transform: scale(1.1);
}

.sidebar.collapsed .sidebar-toggle {
  transform: rotate(180deg);
}

/* Main Content area */
.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-main);
}

/* Topbar */
.topbar {
  height: 72px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-8);
  flex-shrink: 0;
  z-index: var(--z-topbar);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-2);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

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

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.topbar-search {
  position: relative;
  width: 300px;
}

.topbar-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background-color: var(--bg-main);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.topbar-search input:focus {
  outline: none;
  background-color: var(--bg-surface);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ultralight);
}

.topbar-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 18px;
  height: 18px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.notification-btn {
  position: relative;
  color: var(--text-secondary);
  padding: var(--spacing-2);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.notification-btn:hover {
  background-color: var(--bg-main);
  color: var(--text-primary);
}

.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-surface);
}

/* Page Content Area */
.page-container {
  padding: var(--spacing-8);
  overflow-y: auto;
  flex-grow: 1;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--spacing-6);
}

.page-title h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-title p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--spacing-1);
}

.page-actions {
  display: flex;
  gap: var(--spacing-3);
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sidebar) - 1);
  backdrop-filter: blur(2px);
  animation: fadeIn var(--transition-fast);
}