/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(4px);
}

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

.modal {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-2xl);
  transform: translateY(-20px);
  transition: transform var(--transition-normal);
}

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

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.modal-close {
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--gray-100);
  color: var(--gray-900);
}

.modal-body {
  padding: var(--space-5);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  background-color: var(--gray-50);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Table */
.data-table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  padding: var(--space-3) var(--space-4);
  background-color: var(--gray-50);
  color: var(--gray-600);
  font-weight: var(--font-semibold);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-800);
  font-size: var(--text-sm);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: var(--gray-50);
}

.table-actions {
  display: flex;
  gap: var(--space-2);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 var(--space-2);
  border: 1px solid var(--gray-300);
  background-color: var(--white);
  color: var(--gray-700);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
}

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

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

.pagination-info {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* Alerts */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

.alert-success { background-color: rgba(5, 150, 105, 0.1); color: var(--success); border: 1px solid rgba(5, 150, 105, 0.2); }
.alert-warning { background-color: rgba(217, 119, 6, 0.1); color: var(--warning); border: 1px solid rgba(217, 119, 6, 0.2); }
.alert-error { background-color: rgba(220, 38, 38, 0.1); color: var(--error); border: 1px solid rgba(220, 38, 38, 0.2); }
.alert-info { background-color: rgba(2, 132, 199, 0.1); color: var(--info); border: 1px solid rgba(2, 132, 199, 0.2); }

/* Toast */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  min-width: 300px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  transform: translateX(120%);
  transition: transform var(--transition-normal);
  border-left: 4px solid transparent;
}

.toast.show {
  transform: translateX(0);
}

.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--error); }
.toast-warning { border-left-color: var(--warning); }
.toast-info { border-left-color: var(--info); }

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--gray-200);
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.tab-btn {
  background: none;
  border: none;
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--gray-500);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--gray-700);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-1);
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 200px;
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--gray-700);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.dropdown-item:hover {
  background-color: var(--gray-50);
  color: var(--gray-900);
}

/* Tooltip */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-5px);
  padding: var(--space-1) var(--space-2);
  background-color: var(--gray-800);
  color: var(--white);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.tooltip:hover::before {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-10px);
}

/* Search */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  padding-left: var(--space-8);
}

.search-icon {
  position: absolute;
  left: var(--space-3);
  color: var(--gray-400);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-4);
  text-align: center;
  color: var(--gray-500);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  color: var(--gray-300);
  margin-bottom: var(--space-4);
}

/* Loading */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(37, 99, 235, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Stats Card */
.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--primary);
}

.stat-info {
  flex: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  line-height: 1;
}

.stat-change {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--error); }

/* Avatar */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-medium);
  color: var(--gray-600);
  overflow: hidden;
  object-fit: cover;
}

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

.avatar-lg {
  width: 56px;
  height: 56px;
  font-size: var(--text-lg);
}

.avatar-group {
  display: flex;
  align-items: center;
}

.avatar-group .avatar {
  border: 2px solid var(--white);
  margin-left: -10px;
}
.avatar-group .avatar:first-child { margin-left: 0; }

/* Status Dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online { background-color: var(--success); }
.status-dot.offline { background-color: var(--gray-400); }
.status-dot.away { background-color: var(--warning); }

/* File Upload */
.file-upload {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-upload:hover, .file-upload.dragover {
  border-color: var(--primary);
  background-color: rgba(37, 99, 235, 0.02);
}

.file-upload svg {
  width: 32px;
  height: 32px;
  color: var(--gray-400);
  margin-bottom: var(--space-2);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-6);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 11px;
  width: 2px;
  background-color: var(--gray-200);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-6);
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: calc(var(--space-6) * -1);
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--white);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

/* Stepper */
.stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.stepper-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  flex: 1;
}

.stepper-step::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  width: 100%;
  height: 2px;
  background-color: var(--gray-200);
  z-index: 0;
}

.stepper-step:last-child::after {
  display: none;
}

.stepper-step .step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--gray-100);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-medium);
  z-index: 1;
  border: 2px solid var(--white);
}

.stepper-step.active .step-icon {
  background-color: var(--primary);
  color: var(--white);
}

.stepper-step.completed .step-icon {
  background-color: var(--success);
  color: var(--white);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-item a {
  color: var(--gray-600);
}

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

.breadcrumb-item::after {
  content: '/';
  color: var(--gray-400);
}

.breadcrumb-item:last-child::after {
  display: none;
}

.breadcrumb-item.active {
  color: var(--gray-900);
  font-weight: var(--font-medium);
}