:root {
  --primary-blue: #2563eb;
  --dark-blue: #1e40af;
  --light-blue: #dbeafe;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--gray-100);
  color: var(--gray-800);
  line-height: 1.6;
}

/* Login Page */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-card {
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header i {
  font-size: 48px;
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.login-header h1 {
  font-size: 28px;
  color: var(--gray-900);
  margin-bottom: 5px;
}

.login-header p {
  color: var(--gray-500);
  font-size: 14px;
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  color: var(--gray-700);
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 14px;
}

.login-form input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  transition: all 0.3s;
}

.login-form input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--light-blue);
}

.login-footer {
  text-align: center;
  margin-top: 20px;
  color: var(--gray-500);
  font-size: 13px;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 260px;
  height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  z-index: 1000;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--gray-200);
}

.sidebar-header h2 {
  color: var(--primary-blue);
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-nav {
  flex: 1;
  padding: 20px 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--gray-700);
  text-decoration: none;
  transition: all 0.2s;
  position: relative;
}

.nav-item i {
  width: 20px;
  margin-right: 12px;
  font-size: 16px;
}

.nav-item:hover {
  background: var(--gray-50);
  color: var(--primary-blue);
}

.nav-item.active {
  background: var(--light-blue);
  color: var(--primary-blue);
  font-weight: 500;
  border-left: 3px solid var(--primary-blue);
}

.nav-item .badge {
  margin-left: auto;
  background: var(--error);
  color: var(--white);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.sidebar-footer {
  padding: 20px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
}

.admin-details {
  flex: 1;
}

.admin-name {
  font-weight: 500;
  font-size: 14px;
  color: var(--gray-800);
}

.admin-role {
  font-size: 12px;
  color: var(--gray-500);
  text-transform: capitalize;
}

.btn-logout {
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.2s;
}

.btn-logout:hover {
  background: var(--gray-100);
  color: var(--error);
}

/* Main Content */
.main-content {
  margin-left: 260px;
  min-height: 100vh;
  background: var(--gray-100);
}

.header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 16px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--gray-700);
  cursor: pointer;
}

.page-title {
  font-size: 24px;
  color: var(--gray-900);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
}

.notification-bell {
  position: relative;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.2s;
}

.notification-bell:hover {
  background: var(--gray-100);
}

.notification-bell i {
  font-size: 20px;
  color: var(--gray-700);
}

.notification-count {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--error);
  color: var(--white);
  border-radius: 10px;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 600;
}

.notification-dropdown {
  display: none;
  position: absolute;
  top: 50px;
  right: 0;
  width: 350px;
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
}

.notification-dropdown.show {
  display: block;
}

.notification-header {
  padding: 15px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.notification-header h3 {
  font-size: 16px;
  color: var(--gray-900);
}

.notification-header button {
  background: none;
  border: none;
  color: var(--primary-blue);
  cursor: pointer;
  font-size: 12px;
}

.notification-list {
  max-height: 400px;
  overflow-y: auto;
}

.no-notifications {
  padding: 40px 20px;
  text-align: center;
  color: var(--gray-500);
}

/* Content Wrapper */
.content-wrapper {
  padding: 30px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 28px;
  color: var(--gray-900);
}

.page-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--dark-blue);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
  background: var(--gray-50);
}

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

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

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

.btn-small {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Dashboard Stats */
.dashboard-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--white);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

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

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.stat-icon.blue {
  background: var(--light-blue);
  color: var(--primary-blue);
}

.stat-icon.green {
  background: #d1fae5;
  color: var(--success);
}

.stat-icon.red {
  background: #fee2e2;
  color: var(--error);
}

.stat-icon.orange {
  background: #fef3c7;
  color: var(--warning);
}

.stat-details h3 {
  font-size: 32px;
  color: var(--gray-900);
  font-weight: 700;
}

.stat-details p {
  color: var(--gray-500);
  font-size: 14px;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 20px;
}

.dashboard-card {
  background: var(--white);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h2 {
  font-size: 18px;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-body {
  padding: 20px;
}

/* Filters Bar */
.filters-bar {
  background: var(--white);
  padding: 20px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 250px;
  padding: 10px 15px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
}

.filter-select {
  padding: 10px 15px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  background: var(--white);
  cursor: pointer;
}

/* Data Table */
.data-table {
  background: var(--white);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.data-table th {
  background: var(--gray-50);
  padding: 16px;
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: 16px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-800);
}

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

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

.loading {
  text-align: center;
  padding: 40px;
  color: var(--gray-500);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.badge-success {
  background: #d1fae5;
  color: var(--success);
}

.badge-warning {
  background: #fef3c7;
  color: var(--warning);
}

.badge-danger {
  background: #fee2e2;
  color: var(--error);
}

.badge-info {
  background: var(--light-blue);
  color: var(--primary-blue);
}

/* Alerts */
.alert {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-success {
  background: #d1fae5;
  color: var(--success);
  border: 1px solid var(--success);
}

.alert-error {
  background: #fee2e2;
  color: var(--error);
  border: 1px solid var(--error);
}

.alert-warning {
  background: #fef3c7;
  color: var(--warning);
  border: 1px solid var(--warning);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.pagination button {
  padding: 8px 16px;
  border: 1px solid var(--gray-300);
  background: var(--white);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

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

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal-dialog {
  background: var(--white);
  border-radius: 10px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 20px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.modal-close {
  cursor: pointer;
  font-size: 24px;
  color: var(--gray-500);
}

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

/* Form Groups */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Responsive */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
  }

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

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

  .menu-toggle {
    display: block;
  }

  .dashboard-overview {
    grid-template-columns: 1fr;
  }
}