/* ==========================================
   DineDesk Layout — App Shell
   ========================================== */

/* ---- App Shell ---- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-shell.login-view {
  display: block;
}

.app-shell.login-view .sidebar,
.app-shell.login-view .app-header,
.app-shell.login-view .mobile-overlay {
  display: none;
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-sidebar);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--transition-sidebar), transform var(--transition-sidebar);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  padding: var(--space-5) var(--space-5);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-sidebar-border);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.sidebar-logo-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--dd-text);
  letter-spacing: -0.3px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-3);
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--color-sidebar-border);
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--dd-sidebar-section);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: var(--space-4) var(--space-3) var(--space-1-5);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--dd-sidebar-text);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 3px;
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  min-height: 40px;
}

.sidebar-item:hover {
  background: var(--dd-sidebar-hover);
  color: var(--dd-text);
}

.sidebar-item.active {
  background: var(--dd-sidebar-active);
  color: var(--dd-primary-text);
  font-weight: 600;
}

.sidebar-item.active .sidebar-item-icon {
  color: var(--dd-primary-text);
}

.sidebar-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--dd-primary);
  border-radius: 0 3px 3px 0;
}

.sidebar-item-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-item-icon svg {
  width: 20px;
  height: 20px;
}

.sidebar-item-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-item-badge {
  margin-left: auto;
  background: var(--color-error);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  border-top: 1px solid var(--color-sidebar-border);
  padding: var(--space-3);
  flex-shrink: 0;
}

/* ---- Main Content ---- */
.app-main {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  width: calc(100% - var(--sidebar-width));
  transition: margin-left var(--transition-sidebar);
  box-sizing: border-box;
}

/* ---- Header ---- */
.app-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: var(--dd-surface-glass-strong);
  backdrop-filter: blur(var(--dd-glass-blur-lg));
  -webkit-backdrop-filter: blur(var(--dd-glass-blur-lg));
  border-bottom: 1px solid var(--dd-border-glass);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  z-index: var(--z-sticky);
  flex-shrink: 0;
  gap: var(--space-4);
  width: 100%;
  box-sizing: border-box;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  min-width: 0;
}

.header-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.header-menu-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.header-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-search {
  position: relative;
  width: 320px;
  flex-shrink: 0;
}

.header-search-input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-4) 0 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

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

.header-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.header-search-shortcut {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-family: monospace;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.header-icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.header-icon-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.header-icon-btn svg {
  width: 22px;
  height: 22px;
}

.header-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 18px;
  height: 18px;
  background: var(--color-error);
  color: white;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-surface);
}

.header-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: box-shadow var(--transition-fast);
}

.header-avatar:hover {
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

/* ---- Content Area (Full Available Viewport Workspace) ---- */
.app-content {
  flex: 1;
  padding: 24px 32px;
  width: 100%;
  max-width: none;
  margin: 0;
  box-sizing: border-box;
  min-width: 0;
}

@media (max-width: 1024px) {
  .app-content {
    padding: 20px 24px;
  }
}

@media (max-width: 768px) {
  .app-content {
    padding: 16px;
  }
}

/* ---- Mobile Overlay ---- */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sidebar) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ---- Search Overlay ---- */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: var(--z-modal);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-modal {
  background: var(--dd-surface);
  border: 1px solid var(--dd-border);
  border-radius: var(--radius-xl);
  width: 560px;
  max-width: 90vw;
  max-height: 60vh;
  box-shadow: 0 10px 25px -5px rgba(27, 27, 33, 0.12), 0 8px 10px -6px rgba(27, 27, 33, 0.06);
  overflow: hidden;
  transform: translateY(-10px) scale(0.98);
  transition: transform var(--transition-base);
}

.search-overlay.active .search-modal {
  transform: translateY(0) scale(1);
}

.search-modal-input {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  border: none;
  border-bottom: 1px solid var(--dd-border);
  font-size: 14px;
  color: var(--dd-text);
  background: transparent;
}

.search-modal-input:focus {
  outline: none;
}

.search-results {
  overflow-y: auto;
  max-height: 45vh;
  padding: var(--space-2);
}

.search-results-group {
  padding: var(--space-2) var(--space-3);
}

.search-results-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--dd-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: var(--space-2) 0 var(--space-1);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  color: var(--dd-text);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-result-item:hover {
  background: var(--dd-surface-hover);
}

/* ---- Notification Dropdown ---- */
.notification-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 380px;
  background: var(--dd-surface-glass-strong);
  backdrop-filter: blur(var(--dd-glass-blur-lg));
  -webkit-backdrop-filter: blur(var(--dd-glass-blur-lg));
  border: 1px solid var(--dd-border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--dd-shadow-glass), var(--shadow-dropdown);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
}

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

.notification-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.notification-list {
  max-height: 360px;
  overflow-y: auto;
}

.notification-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.notification-item:hover {
  background: var(--color-surface-hover);
}

.notification-item.unread {
  background: var(--color-primary-bg);
}

.notification-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
}

.notification-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

/* ---- Profile Dropdown ---- */
.profile-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 220px;
  background: var(--dd-surface-glass-strong);
  backdrop-filter: blur(var(--dd-glass-blur-lg));
  -webkit-backdrop-filter: blur(var(--dd-glass-blur-lg));
  border: 1px solid var(--dd-border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--dd-shadow-glass), var(--shadow-dropdown);
  z-index: var(--z-dropdown);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
}

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

.profile-dropdown-header {
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-1);
}

.profile-dropdown-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
}

.profile-dropdown-email {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.profile-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.profile-dropdown-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.profile-dropdown-item.danger {
  color: var(--color-error);
}

.profile-dropdown-item.danger:hover {
  background: var(--color-error-bg);
}

.profile-dropdown-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-1) 0;
}

/* ---- Responsive ---- */

/* Laptop */
@media (max-width: 1280px) {
  .header-search {
    width: 260px;
  }
}

/* Small Laptop / Large Tablet */
@media (max-width: 1024px) {
  .header-search {
    width: 220px;
  }

  .app-content {
    padding: var(--space-5);
  }
}

/* Tablet */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
  }

  .header-menu-btn {
    display: flex;
  }

  .header-search {
    display: none;
  }

  .app-content {
    padding: var(--space-4);
  }

  .notification-dropdown {
    width: 320px;
    right: -40px;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .app-content {
    padding: var(--space-3);
  }

  .app-header {
    padding: 0 var(--space-4);
  }

  .header-title {
    font-size: var(--font-size-base);
  }

  .notification-dropdown {
    position: fixed;
    top: var(--header-height);
    left: var(--space-3);
    right: var(--space-3);
    width: auto;
  }
}

/* Small Mobile */
@media (max-width: 390px) {
  .app-content {
    padding: var(--space-2);
  }

  .header-right {
    gap: var(--space-1);
  }

  .header-icon-btn {
    width: 36px;
    height: 36px;
  }

  .header-avatar {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xs);
  }
}

/* ---- Theme Toggle ---- */
.theme-toggle {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.breadcrumb-sep {
  margin: 0 var(--space-0-5, 2px);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}

.breadcrumb-current {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.breadcrumb a {
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-text-primary);
}

/* ---- Header Page Info ---- */
.header-page-info {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
}

.header-page-info .header-title {
  line-height: 1.3;
}

@media (max-width: 768px) {
  .breadcrumb {
    display: none;
  }
}