/* ==========================================================================
   MEKTEB PORTAL - MODERN APPLICATION LAYOUT & SHELL CONTAINERS
   ========================================================================== */

/* Main App Canvas */
.app-window {
  width: 100%;
  min-height: 100vh;
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.app-body-layout {
  display: flex;
  flex: 1;
  position: relative;
  min-height: calc(100vh - var(--header-height));
}

.app-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--color-bg);
}

.view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.workspace {
  padding: var(--space-xl);
  flex: 1;
  overflow-y: auto;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

/* Top Header Shell */
.top-header,
.app-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  z-index: 800;
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-mobile-btn {
  color: var(--color-text);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-radius: var(--radius-sm);
}

.brand-icon .material-symbols-outlined {
  font-size: 20px;
}

.brand-text {
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
  margin-left: var(--space-sm);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
}

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

.breadcrumb-item.active {
  color: var(--color-text);
  font-weight: 600;
}

/* Header Actions & Profile Dropdown */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.user-profile-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px 10px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  color: var(--color-text);
}

.user-profile-btn:hover {
  background-color: var(--color-bg);
  border-color: var(--color-primary);
}

.avatar-placeholder {
  width: 28px;
  height: 28px;
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.chevron-icon {
  font-size: 18px;
  color: var(--color-muted);
}

/* Dropdown Menus */
.dropdown-wrapper {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 210px;
  z-index: 850;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  box-shadow: 0 4px 16px rgba(23, 63, 97, 0.12);
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu-end {
  right: 0;
  left: auto;
}

.profile-menu-header {
  padding: var(--space-sm) var(--space-md);
  display: flex;
  flex-direction: column;
}

.profile-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.profile-subtext {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--color-border);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px var(--space-md);
  font-size: 0.8125rem;
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  background: transparent;
  border: none;
  text-align: left;
  width: 100%;
}

.dropdown-item:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.dropdown-item.text-danger:hover {
  background-color: #FDF0F0;
  color: var(--color-danger);
}

/* Sidebar Navigation */
.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.sidebar-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  height: 100%;
}

.sidebar-group-title {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
  padding-left: var(--space-xs);
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-link:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.sidebar-menu-item.active > .sidebar-link,
.sidebar-link.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.sidebar-label {
  flex: 1;
}

.sidebar-badge {
  margin-left: auto;
}

/* Sidebar Widget */
.sidebar-widget {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: auto;
}

.widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.widget-title {
  font-size: 0.8125rem;
  font-weight: 600;
}

.widget-text {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.sidebar-widget-meta {
  border-top: 1px dashed var(--color-border);
  padding-top: var(--space-xs);
}

/* Application Footer Shell */
.app-footer {
  margin-top: auto;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 10px var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text);
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.footer-left,
.footer-right {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.footer-divider {
  color: var(--color-border);
}

.footer-datetime-text {
  color: var(--color-muted);
}

/* Confirmation Action Modal Window */
.confirm-modal-window {
  max-width: 420px;
  text-align: center;
  border-radius: var(--radius-md);
}

.confirm-modal-body {
  padding: var(--space-xl);
}

.confirm-icon-wrap {
  margin-bottom: var(--space-sm);
  display: flex;
  justify-content: center;
}

.confirm-icon {
  font-size: 44px;
  color: var(--color-warning);
}

.confirm-title {
  color: var(--color-text);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.confirm-message {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.confirm-actions {
  display: flex;
  gap: var(--space-xs);
  justify-content: center;
}

/* Router Error State */
.router-error-wrap {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-danger);
  border-radius: var(--radius-md);
  max-width: 600px;
  margin: var(--space-lg) auto;
}

.router-error-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.router-error-icon {
  font-size: 24px;
  color: var(--color-danger);
}

.router-error-title {
  color: var(--color-danger);
  font-size: 1.0625rem;
  margin: 0;
}

.router-error-desc {
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.router-error-actions {
  display: flex;
  gap: var(--space-xs);
}

/* Spinners & Loading Wrappers */
.btn-spinner {
  width: 14px;
  height: 14px;
  border-width: 2px;
  display: inline-block;
  vertical-align: middle;
  margin-left: 6px;
}

.btn-spinner-light {
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #ffffff;
}

.inline-block {
  display: inline-block;
}

.loading-wrapper,
.load-more-wrapper,
.error-wrapper {
  text-align: center;
  padding: var(--space-lg);
}

.error-wrapper {
  color: var(--color-danger);
  font-size: 0.875rem;
}

/* Responsive Design */
.hidden-desktop {
  display: none;
}

@media (max-width: 840px) {
  .hidden-desktop {
    display: inline-flex;
  }

  .app-sidebar {
    position: fixed;
    top: var(--header-height);
    bottom: 0;
    left: 0;
    z-index: 910;
    transform: translateX(-100%);
    box-shadow: 2px 0 12px rgba(23, 63, 97, 0.15);
  }

  .app-sidebar.open,
  .app-sidebar.mobile-open {
    transform: translateX(0);
  }

  .workspace {
    padding: var(--space-md);
  }

  .breadcrumb-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .top-header,
  .app-header {
    padding: 0 var(--space-md);
  }

  .app-footer {
    padding: var(--space-sm) var(--space-md);
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}