/* CSS Variables for theming - Enhanced Design System */
:root {
  /* Core colors - Modern dark theme */
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-elevated: #1a1f2e;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  /* Accent colors - Vibrant gradients */
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --accent-glow: rgba(99, 102, 241, 0.3);

  /* Semantic colors */
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.1);

  /* Borders and shadows */
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* Glassmorphism */
  --glass-bg: rgba(17, 24, 39, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed: 72px;
  --header-height: 64px;

  /* Animation */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

[data-theme="light"] {
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f3f4f6;
  --bg-elevated: #ffffff;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;

  --accent-primary: #4f46e5;
  --accent-secondary: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --accent-glow: rgba(79, 70, 229, 0.2);

  --success-bg: rgba(16, 185, 129, 0.1);
  --warning-bg: rgba(245, 158, 11, 0.1);
  --error-bg: rgba(239, 68, 68, 0.1);
  --info-bg: rgba(59, 130, 246, 0.1);

  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1);

  --glass-bg: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(0, 0, 0, 0.05);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Custom selection */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* Screen Management */
.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: block;
}

/* Login Screen - Modern Split Layout */
#login-screen.screen.active {
  display: flex;
  min-height: 100vh;
  background: var(--bg-primary);
}

.login-left {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.login-left::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, var(--accent-glow) 0%, transparent 50%);
  opacity: 0.5;
  pointer-events: none;
}

.login-right {
  flex: 1;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.login-right::before {
  content: '';
  position: absolute;
  width: 150%;
  height: 150%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.login-hero {
  text-align: center;
  color: white;
  position: relative;
  z-index: 1;
}

.login-hero-icon {
  font-size: 6rem;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.login-hero h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.login-hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 400px;
  line-height: 1.7;
}

.login-container {
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.login-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

/* Form improvements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* Quick Login */
.quick-login {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.quick-login p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.quick-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quick-login-btn:hover {
  background: var(--bg-elevated);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* Error message */
.error-message {
  color: var(--error);
  text-align: center;
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--error-bg);
  border-radius: 8px;
  font-size: 0.875rem;
  display: none;
}

.error-message.visible {
  display: block;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* Responsive login */
@media (max-width: 900px) {
  #login-screen {
    flex-direction: column;
  }

  .login-right {
    display: none;
  }

  .login-left {
    padding: 1.5rem;
  }
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

/* Buttons - Modern Design */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  composes: btn;
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  composes: btn;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

.btn-ghost {
  composes: btn;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

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

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
}

.btn-full {
  width: 100%;
}

.btn-icon-only {
  padding: 0.5rem;
  width: 36px;
  height: 36px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Legacy buttons */
.btn-icon {
  composes: btn btn-ghost btn-icon-only;
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0 4px;
  line-height: 1;
  transition: color var(--transition-fast);
}

.btn-close:hover {
  color: var(--error);
}

/* App Layout - Sidebar Navigation */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-logo {
  font-size: 1.5rem;
}

.sidebar-title {
  font-size: 1.125rem;
  font-weight: 600;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.nav-section {
  padding: 0 0.75rem;
  margin-bottom: 1.5rem;
}

.nav-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 0 0.75rem;
  margin-bottom: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  margin-bottom: 0.25rem;
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  width: 100%;
  font-size: 0.9375rem;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.nav-item-icon {
  font-size: 1.125rem;
  width: 24px;
  text-align: center;
}

.nav-item-badge {
  margin-left: auto;
  padding: 0.125rem 0.5rem;
  background: var(--bg-tertiary);
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.nav-item.active .nav-item-badge {
  background: rgba(255, 255, 255, 0.2);
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-menu:hover {
  background: var(--bg-tertiary);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: white;
  font-size: 0.875rem;
}

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

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.user-menu-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
}

/* Main Content Area */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
}

/* Top Header */
.top-header {
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

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

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

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background: var(--success-bg);
  border-radius: 20px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--success);
}

.status-indicator::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Page Content */
.page-content {
  flex: 1;
  padding: 1.5rem;
  max-width: 1600px;
}

.page-header {
  margin-bottom: 1.5rem;
}

.page-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
}

.page-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Tab Content (legacy support) */
.tab-content {
  display: none;
}

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

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Cards - Modern Elevated Design */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card-hover {
  cursor: pointer;
}

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

.card-header {
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.card-icon.table-icon {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.card-icon.collection-icon {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
}

.card-footer {
  padding: 0.75rem 1.25rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-stats {
  display: flex;
  gap: 1rem;
}

.card-stat {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.card-stat-value {
  font-weight: 600;
  color: var(--text-primary);
}

/* Legacy table card support */
.table-card {
  composes: card card-hover;
}

.tables-grid {
  composes: card-grid;
}

/* Data Table - Modern Styling */
.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.table-toolbar {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

.table-search {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.table-search input {
  width: 100%;
  padding: 0.625rem 0.75rem 0.625rem 2.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.table-search::before {
  content: '🔍';
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.875rem;
  opacity: 0.5;
}

.table-actions {
  display: flex;
  gap: 0.5rem;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th,
.data-table td {
  padding: 0.875rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--bg-elevated);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

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

.data-table tbody tr:hover {
  background: var(--bg-tertiary);
}

.data-table td {
  font-size: 0.875rem;
  color: var(--text-primary);
}

.table-cell-muted {
  color: var(--text-secondary);
}

.table-cell-mono {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8125rem;
}

.table-cell-badge {
  display: inline-flex;
  padding: 0.25rem 0.625rem;
  background: var(--bg-tertiary);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
}

.table-cell-badge.success {
  background: var(--success-bg);
  color: var(--success);
}

.table-cell-badge.warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.table-cell-badge.error {
  background: var(--error-bg);
  color: var(--error);
}

.table-row-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.data-table tr:hover .table-row-actions {
  opacity: 1;
}

/* Table Pagination */
.table-pagination {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
}

.pagination-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.pagination-btn {
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

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

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

/* Vector Search */
.vector-search-container {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.search-box {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.search-box input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.vector-options {
  display: flex;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.vector-options label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.vector-options input,
.vector-options select {
  width: auto;
  padding: 6px 12px;
}

/* Collections */
.collections-info {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1.5rem;
}

.collections-info h3 {
  margin-bottom: 1rem;
}

.collections-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.collection-item {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.collection-name {
  font-weight: 500;
}

.collection-count {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Query Builder */
.query-builder {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
}

.sort-row {
  display: flex;
  gap: 1rem;
}

.sort-row input {
  flex: 1;
}

/* Results */
.results-container {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1.5rem;
  min-height: 300px;
}

.empty-state {
  text-align: center;
  color: var(--text-secondary);
  padding: 3rem;
}

/* Data Table */
.table-container {
  overflow-x: auto;
}

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

.data-table th,
.data-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
}

.data-table tr:hover {
  background: var(--bg-tertiary);
}

/* Card Body */
.card-body {
  padding: 1.25rem;
  border-top: 1px solid var(--border);
}

/* Settings - Updated */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.settings-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.settings-card h3 {
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-item code {
  background: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Modals - Enhanced */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.visible {
  display: flex;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fadeIn 0.2s ease;
}

.modal.visible {
  display: flex;
}

.modal-content {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalSlideUp 0.3s ease;
}

.modal-large .modal-content {
  max-width: 1000px;
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Column Builder */
.columns-builder {
  margin-top: 1.5rem;
}

.column-row {
  display: grid;
  grid-template-columns: 1fr 120px 40px;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  align-items: center;
}

.column-row input,
.column-row select {
  width: 100%;
  padding: 8px 12px;
}

.btn-remove {
  background: var(--error);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  padding: 8px;
}

/* Insert Form */
.insert-form .form-group {
  margin-bottom: 1rem;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-elevated) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text:last-child {
  width: 70%;
}

.skeleton-card {
  height: 120px;
}

.skeleton-circle {
  border-radius: 50%;
}

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

/* Legacy loading */
.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.empty-state-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin-bottom: 1.5rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
  min-width: 320px;
  max-width: 480px;
}

.toast.success {
  border-left: 3px solid var(--success);
}

.toast.error {
  border-left: 3px solid var(--error);
}

.toast.warning {
  border-left: 3px solid var(--warning);
}

.toast.info {
  border-left: 3px solid var(--info);
}

.toast-icon {
  font-size: 1.25rem;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.125rem;
}

.toast-message {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1.25rem;
  line-height: 1;
}

.toast-close:hover {
  color: var(--text-primary);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

.toast.hiding {
  animation: slideOut 0.3s ease forwards;
}

/* Result Cards */
.result-card {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.result-score {
  background: var(--accent-primary);
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.85rem;
}

.result-content {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .header-left {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-tabs {
    flex-wrap: wrap;
    justify-content: center;
  }

  .app-main {
    padding: 1rem;
  }

  .section-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .search-box {
    flex-direction: column;
  }

  .vector-options {
    flex-direction: column;
    gap: 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .modal-content {
    margin: 1rem;
    max-height: calc(100vh - 2rem);
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.table-card,
.result-card {
  animation: fadeIn 0.3s ease;
}

/* Notifications Panel */
.notifications-panel {
    position: fixed;
    top: 0;
    right: -360px;
    width: 360px;
    height: 100vh;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    z-index: 1000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}
.notifications-panel.visible {
    right: 0;
}
.notifications-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}
.notifications-header button {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-secondary);
}
.notifications-list {
    flex: 1;
    overflow-y: auto;
}

/* Table toolbar */
.table-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}
.pagination {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.pagination span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Status offline */
.status-offline {
    background: var(--danger-bg, #fee2e2) !important;
    color: var(--danger, #dc2626) !important;
}


/* Disabled button state */
button:disabled, .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}