/* ==================== RESET & BASE ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Primary Colors */
  --primary: #667eea;
  --primary-dark: #5568d3;
  --primary-light: #818cf8;
  
  /* Semantic Colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --info: #3b82f6;
  --info-light: #dbeafe;
  
  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--gray-100);
  color: var(--gray-900);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.hidden {
  display: none !important;
}

/* ==================== LOADING SCREEN ==================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
  z-index: 9999;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--spacing-lg);
}

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

.loading-screen p {
  color: white;
  font-size: 1rem;
  font-weight: 500;
}

/* ==================== AUTH SCREEN ==================== */
.auth-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
  padding: var(--spacing-lg);
}

.auth-container {
  width: 100%;
  max-width: 420px;
}

.auth-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out;
}

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

.auth-header {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
  color: white;
}

.auth-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}

.auth-logo svg {
  width: 32px;
  height: 32px;
}

.auth-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
  font-size: 0.875rem;
  opacity: 0.9;
}

.auth-body {
  padding: var(--spacing-xl);
}

.auth-message {
  color: var(--gray-600);
  font-size: 0.875rem;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.google-signin-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.google-signin-btn:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.google-signin-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.google-icon {
  width: 20px;
  height: 20px;
}

.auth-footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--gray-50);
  text-align: center;
}

.auth-footer p {
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* ==================== UNAUTHORIZED SCREEN ==================== */
.unauthorized-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
  padding: var(--spacing-lg);
}

.unauthorized-container {
  width: 100%;
  max-width: 420px;
}

.unauthorized-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  animation: fadeInUp 0.5s ease-out;
}

.unauthorized-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background: var(--danger-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger);
}

.unauthorized-icon svg {
  width: 40px;
  height: 40px;
}

.unauthorized-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.unauthorized-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.unauthorized-subtitle {
  font-size: 0.875rem !important;
  color: var(--gray-500) !important;
  margin-bottom: var(--spacing-xl) !important;
}

.signout-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.signout-btn:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

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

/* ==================== DASHBOARD ==================== */
.dashboard-screen {
  min-height: 100vh;
  padding-bottom: var(--spacing-xl);
}

/* Header */
.dashboard-header {
  background: white;
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.header-subtitle {
  font-size: 0.875rem;
  color: var(--gray-500);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.admin-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.admin-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--gray-200);
  object-fit: cover;
}

.admin-details {
  display: flex;
  flex-direction: column;
}

.admin-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.2;
}

.admin-role {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.signout-btn-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--danger-light);
  color: var(--danger);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.signout-btn-header svg {
  width: 18px;
  height: 18px;
}

.signout-btn-header:hover {
  background: var(--danger);
  color: white;
}

/* Stats Section */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 28px;
  height: 28px;
  color: white;
}

.stat-icon-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.stat-icon-success {
  background: linear-gradient(135deg, var(--success) 0%, #34d399 100%);
}

.stat-icon-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #f87171 100%);
}

.stat-icon-info {
  background: linear-gradient(135deg, var(--info) 0%, #60a5fa 100%);
}

.stat-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Controls Section */
.controls-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: 0 var(--spacing-xl) var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.search-container {
  position: relative;
  flex: 1;
  min-width: 250px;
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--gray-400);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 2.75rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  transition: var(--transition);
  background: white;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-buttons {
  display: flex;
  gap: var(--spacing-sm);
  background: white;
  padding: var(--spacing-xs);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--gray-600);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.filter-btn:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

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

.refresh-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--success);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.refresh-btn svg {
  width: 20px;
  height: 20px;
}

.refresh-btn:hover {
  background: #059669;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

/* Table Section */
.table-section {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.table-container {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

.users-table thead {
  background: var(--gray-50);
}

.users-table th {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

.users-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
}

.users-table tbody tr {
  transition: var(--transition);
}

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

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

.user-cell {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-avatar-table {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--gray-200);
  object-fit: cover;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.2;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-active {
  background: var(--success-light);
  color: var(--success);
}

.status-blocked {
  background: var(--danger-light);
  color: var(--danger);
}

.action-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-action {
  padding: 0.375rem 0.875rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-block {
  background: var(--danger-light);
  color: var(--danger);
}

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

.btn-unblock {
  background: var(--success-light);
  color: var(--success);
}

.btn-unblock:hover {
  background: var(--success);
  color: white;
}

.table-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
}

.table-loading .loading-spinner {
  border-color: var(--gray-200);
  border-top-color: var(--primary);
  margin-bottom: var(--spacing-md);
}

.table-loading p {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.no-users {
  text-align: center;
  padding: var(--spacing-2xl);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.no-users svg {
  width: 64px;
  height: 64px;
  color: var(--gray-300);
  margin-bottom: var(--spacing-lg);
}

.no-users h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.no-users p {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

/* Pagination */
.pagination-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-top: var(--spacing-lg);
}

.pagination-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gray-100);
  color: var(--gray-700);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--primary);
  color: white;
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-btn svg {
  width: 18px;
  height: 18px;
}

.page-info {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
}

/* ==================== MODAL ==================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease-out;
}

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

.modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 480px;
  width: 100%;
  animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.modal-close-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--gray-400);
  cursor: pointer;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: var(--gray-100);
  color: var(--gray-600);
}

.modal-close-btn svg {
  width: 20px;
  height: 20px;
}

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

.modal-body p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--gray-200);
}

.btn {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

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

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

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-200);
}

/* ==================== TOAST ==================== */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  background: white;
  color: var(--gray-900);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 2000;
  animation: slideInRight 0.3s ease-out;
  max-width: 400px;
}

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

.toast svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast.toast-success {
  background: var(--success);
  color: white;
}

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

.toast.toast-info {
  background: var(--info);
  color: white;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  .users-table {
    min-width: 900px;
  }
}

@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .stats-section {
    grid-template-columns: 1fr;
  }
  
  .controls-section {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-container {
    width: 100%;
  }
  
  .filter-buttons {
    width: 100%;
    justify-content: space-between;
  }
  
  .refresh-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .auth-card,
  .unauthorized-card {
    margin: 0;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .admin-details {
    display: none;
  }
}