/* Main Layout */
.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background-color: var(--surface-color);
  border-right: 1px solid var(--border-color);
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transform: translateX(0);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, opacity 0.35s ease;
  box-shadow: var(--shadow-md);
  will-change: transform, opacity;
}

.sidebar.collapsed {
  transform: translateX(-100%);
}

.sidebar.open {
  transform: translateX(0);
  opacity: 1;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.12);
}

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

.sidebar-header h1 {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 600;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  background: var(--surface-hover);
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-weight: 600;
  font-size: larger;
}

.menu-toggle:hover {
  background: var(--border-color);
}

.sidebar-nav {
  padding: var(--spacing-md);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  transition: var(--transition);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

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

.nav-item.active {
  background: var(--primary-color);
  color: white;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  transition: var(--transition);
}

.main-content.expanded {
  margin-left: 0;
}

/* Top Bar */
.top-bar {
  background: rgba(var(--surface-rgb), 0.8);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
}

.search-bar {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: var(--input-padding);
  background: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

.search-bar input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
}

/* Theme Toggles */
.theme-toggles {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-right: var(--spacing-sm);
}

.theme-toggle-btn {
  width: 24px;
  height: 24px;
  border: none;
  background: none;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  padding: 0;
  opacity: 0.6;
}

.theme-toggle-btn:hover {
  opacity: 1;
  transform: translateY(-2px);
}

.theme-toggle-btn:active {
  transform: scale(0.9);
}

.theme-toggle-btn.active {
  opacity: 1;
  transform: scale(1.15);
  filter: drop-shadow(0 0 4px var(--primary-color));
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Buttons */
.btn {
  padding: var(--btn-padding);
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.btn-danger:hover {
  background: #c82333;
  border-color: #bd2130;
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.875rem;
}

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--accent-color);
  color: white;
}

.btn-danger:hover {
  background: #c0392b;
}

.btn-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  background: var(--surface-hover);
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--border-color);
}

/* Button symbol and text styling */
.btn .btn-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  line-height: 1;
}

.btn .btn-text {
  display: inline;
}

/* Content Area */
.content {
  padding: var(--spacing-lg);
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.toolbar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.toolbar-title {
  flex: 1;
}

.mobile-nav-btns {
  display: none;
  gap: var(--spacing-xs);
}

.btn-icon-mobile {
  padding: 8px 12px;
  font-size: 18px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-icon-mobile.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.sort-controls {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.sort-controls select {
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 16px;
  cursor: pointer;
}

/* Contact List */
.contact-list {
  display: grid;
  gap: var(--spacing-md);
}

.contact-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.contact-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info {
  flex: 1;
  min-width: 0;
}

.contact-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.contact-detail-item {
  font-size: 0.875rem;
  color: var(--text-secondary);
  word-break: break-word;
}

.contact-detail-item a {
  color: var(--primary-color);
  text-decoration: none;
  word-break: break-all;
}

.contact-detail-item a:hover {
  text-decoration: underline;
}

.contact-detail-label {
  font-weight: 600;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--spacing-sm);
}

.contact-notes {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--surface-color);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.contact-notes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.contact-notes-header .contact-detail-label {
  margin-top: 0;
}

.btn-edit-notes {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
  color: var(--text-secondary);
}

.btn-edit-notes:hover {
  background: var(--background-color);
  color: var(--primary-color);
}

.contact-notes-content {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.contact-notes-empty {
  background: transparent;
  border: 1px dashed var(--border-color);
  padding: var(--spacing-sm);
  text-align: center;
}

.btn-add-notes {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 0.875rem;
  padding: var(--spacing-sm);
  transition: var(--transition);
  width: 100%;
}

.btn-add-notes:hover {
  color: var(--primary-color);
}

.contact-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.contact-group {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: var(--spacing-sm);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  opacity: 0;
  animation: fadeIn 0.2s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.modal {
  background: var(--surface-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  animation: scaleIn 0.2s forwards;
}

@keyframes scaleIn {
  to { transform: scale(1); }
}

.modal-header {
  padding: calc(var(--spacing-lg) - 12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-header h2 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

.modal-body {
  padding: calc(var(--spacing-lg) - 12px);
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

.modal-footer {
  padding: calc(var(--spacing-lg) - 12px);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  background: var(--surface-color);
  flex-shrink: 0;
}

/* Form */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: var(--input-padding);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--background-color);
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

/* Prevent iOS auto-zoom on all inputs */
input,
select,
textarea {
  font-size: 16px !important;
}

.form-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
}

textarea.form-input {
  resize: vertical;
  min-height: 80px;
  font-family: inherit;
  line-height: 1.5;
}

.form-input-group {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.form-input-group .form-input {
  flex: 1;
}

.btn-add-field {
  padding: 8px 16px;
  background: var(--secondary-color);
  color: white;
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

.btn-add-field:hover {
  background: #2980b9;
}

.btn-remove {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-color);
  color: white;
  border-radius: var(--border-radius-sm);
}

/* Groups View */
.groups-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: var(--spacing-lg);
  animation: fadeIn 0.3s ease-in;
}

.group-card {
  background: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: visible;
  position: relative;
}

.group-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--primary-color);
}

/* Drag handle */
.group-card-drag-handle {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 28px;
  height: 28px;
  background: var(--primary-color);
  color: white;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: grab;
  z-index: 10;
  opacity: 0.85;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  animation: pulseHandle 2s ease-in-out infinite;
}

.group-card-drag-handle:hover {
  opacity: 1;
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25);
}

.group-card-drag-handle:active {
  cursor: grabbing;
  transform: scale(0.95);
}

/* Drag info tooltip */
.drag-info-tooltip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-color-shade-3);
  padding: 6px 10px;
  border-radius: 6px;
  margin-top: 8px;
  font-size: 0.8rem;
}

.drag-info-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: bold;
  cursor: help;
  flex-shrink: 0;

}

.drag-info-text {
  color: var(--text-secondary);
  font-size: 0.8rem;
  line-height: 1.2;
}

@keyframes pulseHandle {
  0%, 100% {
    opacity: 0.85;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

/* Dragging states */
.group-card.dragging {
  opacity: 0.3;
  border-style: dashed;
  border-color: var(--border-color);
  background: var(--background-color);
}

.group-card.dragging * {
  visibility: hidden;
}

.group-card.dragging::after {
  content: '📦 Drop here';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.875rem;
  color: var(--text-tertiary);
  visibility: visible;
  white-space: nowrap;
}

.group-card.drag-over {
  border-color: var(--primary-color);
  border-style: dashed;
  border-width: 3px;
  background: var(--surface-hover);
  transform: scale(0.98);
}

/* Drag clone that follows cursor */
.drag-clone {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.9;
  transform: rotate(3deg) scale(0.95);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  transition: opacity 0.2s ease;
  cursor: grabbing;
}

.drag-clone * {
  pointer-events: none;
}

.group-card::after {
  content: '💡 Click any member to edit';
  position: absolute;
  top: 2px;
  left: 50%;
  transform: translateX(-90%);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  background: var(--background-color);
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.group-card:hover::after {
  opacity: 1;
}

.group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--border-color);
}

.group-header-right {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  flex-shrink: 0;
}

.group-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.group-symbol {
  font-size: 3rem;
  line-height: 1;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.group-title h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.group-title p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 500;
}

.group-members {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.group-member-card {
  background: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.group-member-card:hover {
  background: var(--surface-color);
  border-color: var(--primary-color);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.member-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.member-info {
  flex: 1;
  min-width: 0;
}

.member-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.member-detail {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-detail a {
  color: var(--primary-color);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-detail a:hover {
  text-decoration: underline;
}

.detail-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.member-edit-hint {
  margin-left: auto;
  font-size: 1.1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  color: var(--primary-color);
}

.group-member-card:hover .member-edit-hint {
  opacity: 1;
}

/* Table View */
.table-container {
  overflow-x: auto;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.contacts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.contacts-table thead {
  background: var(--primary-color);
  color: white;
  position: sticky;
  top: 0;
  z-index: 10;
}

.contacts-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--primary-dark);
  white-space: nowrap;
}

.contacts-table th:last-child {
  text-align: center;
}

.contacts-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.contacts-table tbody tr:hover {
  background: var(--surface-hover);
}

.contacts-table tbody tr:nth-child(even) {
  background: var(--background-color);
}

.contacts-table tbody tr:nth-child(even):hover {
  background: var(--surface-hover);
}

.contacts-table td {
  padding: 12px 16px;
  vertical-align: top;
}

.contacts-table td:last-child {
  text-align: center;
  font-weight: 600;
  color: var(--primary-color);
}

.table-cell-stacked {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.table-cell-item {
  word-break: break-word;
  line-height: 1.4;
}

.table-cell-item a {
  color: var(--primary-color);
  text-decoration: none;
  word-break: break-all;
}

.table-cell-item a:hover {
  text-decoration: underline;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--text-secondary);
}

.empty-state h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-to-top.visible {
  opacity: 0.85;
  visibility: visible;
}

.scroll-to-top:hover {
  opacity: 1;
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.scroll-to-top:active {
  transform: translateY(-1px);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    opacity: 0.95;
    box-shadow: none;
  }
  
  .sidebar.open {
    transform: translateX(0);
    opacity: 1;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.12);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .top-bar {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .search-bar {
    max-width: none;
  }
  
  /* Theme toggles on mobile */
  .theme-toggles {
    gap: 3px;
  }
  
  .theme-toggle-btn {
    width: 22px;
    height: 22px;
    font-size: 16px;
  }
  
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .toolbar-header {
    width: 100%;
  }
  
  .mobile-nav-btns {
    display: flex;
  }
  
  .contact-card {
    flex-direction: column;
  }
  
  .contact-avatar {
    align-self: center;
  }
  
  .contact-actions {
    justify-content: center;
  }
  
  .backup-controls {
    padding: var(--spacing-md);
  }
  
  .backup-side-by-side {
    grid-template-columns: 1fr;
  }
  
  .backup-mode-buttons {
    flex-direction: column;
  }
  
  .backup-mode-btn {
    width: 100%;
  }
  
  .backup-field-change {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .backup-card-changes,
  .backup-card-details {
    padding-left: 0;
  }
  
  .backup-card-header {
    flex-wrap: wrap;
  }
  
  .backup-undo-btn {
    width: 100%;
    justify-content: center;
  }
  
  .backup-history-header {
    flex-wrap: wrap;
  }
  
  .backup-detail-btn {
    width: 100%;
    margin-top: var(--spacing-xs);
  }
  
  #backupDetailModal .modal {
    margin: var(--spacing-sm);
    max-width: calc(100vw - 32px);
  }
}

/* ============================================================ */
/* BACKUP COMPARISON STYLES */
/* ============================================================ */

.backup-controls {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.backup-selector-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.backup-history-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
}

.backup-history-toggle input[type="checkbox"] {
  cursor: pointer;
}

.backup-history-toggle label {
  cursor: pointer;
  font-size: 0.9rem;
  -webkit-user-select: none;
  user-select: none;
}

.backup-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-color);
}

.backup-compare-mode {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.backup-mode-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.backup-mode-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.backup-mode-btn:hover {
  background: var(--primary-color-shade-1);
  border-color: var(--primary-color);
}

.backup-mode-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.backup-mode-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.backup-comparison {
  min-height: 400px;
}

.backup-empty-state,
.backup-no-changes {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-secondary);
  gap: var(--spacing-md);
}

.backup-empty-state svg,
.backup-no-changes svg {
  opacity: 0.3;
}

.backup-empty-state p,
.backup-no-changes p {
  font-size: 1rem;
  margin: 0;
}

.backup-no-changes h3 {
  margin: 0;
  color: var(--text-color);
}

/* Changes Only View */
.backup-changes-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.backup-summary {
  background: var(--surface-color);
  border: 2px solid var(--primary-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.backup-summary h3 {
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--text-color);
}

.backup-summary-stats {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.backup-stat {
  padding: 8px 16px;
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 0.9rem;
  color: white;
}

.backup-stat-added {
  background: #10b981;
}

.backup-stat-removed {
  background: #ef4444;
}

.backup-stat-modified {
  background: #f59e0b;
}

.backup-stat-group {
  background: #8b5cf6;
}

.backup-restore-all {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 6px;
}

.backup-section {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.backup-section-title {
  margin: 0;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-color);
}

.backup-added-title {
  color: #10b981;
  border-bottom-color: #10b981;
}

.backup-removed-title {
  color: #ef4444;
  border-bottom-color: #ef4444;
}

.backup-modified-title {
  color: #f59e0b;
  border-bottom-color: #f59e0b;
}

.backup-group-title {
  color: #8b5cf6;
  border-bottom-color: #8b5cf6;
}

.backup-diff-card {
  background: var(--background-color);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: all 0.2s ease;
}

.backup-diff-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.backup-card-added {
  border-left: 4px solid #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.backup-card-removed {
  border-left: 4px solid #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.backup-card-modified {
  border-left: 4px solid #f59e0b;
  background: rgba(245, 158, 11, 0.05);
}

.backup-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.backup-card-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.backup-card-info {
  flex: 1;
  min-width: 0;
}

.backup-card-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-color);
  margin-bottom: 2px;
}

.backup-card-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.backup-undo-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.backup-card-details {
  padding-left: 60px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.backup-card-changes {
  padding-left: 60px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.backup-field-change {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: var(--spacing-md);
  align-items: start;
  padding: var(--spacing-sm);
  background: var(--background-color);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

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

.backup-field-diff {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.875rem;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.backup-value {
  padding: 4px 8px;
  border-radius: 4px;
  line-height: 1.5;
}

.backup-value-removed {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  text-decoration: line-through;
}

.backup-value-added {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.backup-field-undo {
  padding: 4px 10px;
  font-size: 0.875rem;
}

/* Side-by-Side View */
.backup-side-by-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.backup-column {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  min-height: 500px;
}

.backup-column-title {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 1.1rem;
  color: var(--text-color);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-color);
}

.backup-column-stats {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.backup-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.backup-contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background: var(--background-color);
}

.backup-contact-item.backup-contact-added {
  border-left: 3px solid #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.backup-contact-item.backup-contact-removed {
  border-left: 3px solid #ef4444;
  background: rgba(239, 68, 68, 0.05);
  opacity: 0.7;
}

.backup-contact-item.backup-contact-modified {
  border-left: 3px solid #f59e0b;
  background: rgba(245, 158, 11, 0.05);
}

.backup-contact-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.backup-contact-info {
  flex: 1;
  min-width: 0;
}

.backup-contact-name {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.backup-contact-group {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.backup-contact-badge {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.backup-contact-added .backup-contact-badge {
  background: #10b981;
  color: white;
}

.backup-contact-removed .backup-contact-badge {
  background: #ef4444;
  color: white;
}

.backup-contact-modified .backup-contact-badge {
  background: #f59e0b;
  color: white;
}

.backup-more {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--text-secondary);
  font-style: italic;
}

/* Unified View */
.backup-unified-view {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
}

.backup-unified-view h3 {
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-color);
}

.backup-unified-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.backup-unified-item {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background: var(--background-color);
}

.backup-unified-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.backup-status-badge {
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.backup-badge-added {
  background: #10b981;
  color: white;
}

.backup-badge-removed {
  background: #ef4444;
  color: white;
}

.backup-badge-modified {
  background: #f59e0b;
  color: white;
}

.backup-badge-current {
  background: var(--border-color);
  color: var(--text-secondary);
}

.backup-unified-changes {
  margin-top: var(--spacing-sm);
  padding-left: 48px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.backup-change-badge {
  padding: 3px 8px;
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Backup History Timeline */
.backup-history-timeline {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
}

.backup-history-entry {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
  transition: box-shadow 0.2s, transform 0.2s;
}

.backup-history-entry[data-is-current="true"] {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.03);
}

.backup-history-entry:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.backup-history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
  gap: var(--spacing-sm);
}

.backup-history-date {
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.95rem;
  flex-shrink: 0;
}

.backup-history-stats {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.backup-detail-btn {
  flex-shrink: 0;
  font-size: 0.85rem;
  white-space: nowrap;
}

.backup-stat-mini {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

.backup-stat-mini.backup-stat-added {
  background: #10b981;
}

.backup-stat-mini.backup-stat-removed {
  background: #ef4444;
}

.backup-stat-mini.backup-stat-modified {
  background: #f59e0b;
}

.backup-history-changes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.backup-history-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
  line-height: 1.6;
}

.backup-contact-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
}

.backup-pill-added {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.backup-pill-removed {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.backup-pill-modified {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.backup-loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Mobile Responsive - Additional Styles */
@media (max-width: 768px) {
  .modal {
    margin: var(--spacing-sm);
    max-height: calc(100vh - 32px);
  }
  
  .btn {
    justify-content: center;
  }
  
  /* Hide button text labels on mobile */
  .btn .btn-text {
    display: none;
  }
  
  /* Table responsive */
  .contacts-table {
    font-size: 0.75rem;
  }
  
  .contacts-table th,
  .contacts-table td {
    padding: 8px 12px;
  }
  
  .table-container {
    max-width: 100vw;
    overflow-x: scroll;
  }
  
  .group-card::after {
    font-size: 0.65rem;
    padding: 2px 6px;
  }
  
  .member-edit-hint {
    font-size: 1rem;
  }
  
  .groups-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .group-card {
    padding: var(--spacing-md);
  }
  
  .group-symbol {
    font-size: 2.5rem;
  }
  
  .group-header {
    gap: var(--spacing-sm);
    flex-direction: column;
    align-items: flex-start;
  }
  
  .group-header-right {
    width: 100%;
    justify-content: flex-end;
    flex-wrap: wrap;
  }
  
  /* Shared view mobile adjustments */
  .shared-view-fullwidth {
    padding: var(--spacing-md) !important;
  }
  
  .shared-view-fullwidth .toolbar {
    padding: var(--spacing-md) !important;
    margin-bottom: var(--spacing-md) !important;
  }
  
  /* Scroll to top button on mobile */
  .scroll-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
    font-size: 20px;
  }
}

/* Shared View Styles */
.shared-view-hidden {
  display: none !important;
}

.shared-view-fullwidth {
  margin-left: 0 !important;
  margin-right: 0 !important;
  max-width: 100% !important;
  padding: var(--spacing-lg);
}

.shared-view-fullwidth #tableView {
  display: block !important;
}

.shared-view-fullwidth .toolbar {
  background: var(--surface-color);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 480px) {
  .content {
    padding: var(--spacing-lg);
  }
  
  .contact-card {
    padding: var(--spacing-md);
  }
  
  /* Hide text on mobile but keep symbols visible and larger */
  .top-bar-actions .btn .btn-text {
    display: none;
  }
  
  .top-bar-actions .btn .btn-symbol {
    display: inline-flex;
    font-size: 1.5rem;
    font-weight: bold;
    line-height: 1;
  }
  
  .contacts-table {
    font-size: 0.7rem;
  }
  
  .contacts-table th,
  .contacts-table td {
    padding: 6px 8px;
  }
  
  .group-card::after {
    display: none;
  }
  
  /* Shared view extra small mobile adjustments */
  .shared-view-fullwidth {
    padding: var(--spacing-sm) !important;
  }
  
  .shared-view-fullwidth .toolbar {
    padding: var(--spacing-sm) !important;
    margin-bottom: var(--spacing-sm) !important;
    border-radius: var(--border-radius-sm) !important;
  }
}