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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f7fa;
  color: #333;
}

.admin-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  color: white;
  text-decoration: none;
  font-size: 20px;
  font-weight: bold;
}

.main-nav {
  display: flex;
  gap: 25px;
}

.main-nav a {
  color: white;
  text-decoration: none;
  padding: 8px 15px;
  border-radius: 5px;
  transition: background 0.3s;
}

.main-nav a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logout-btn {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 8px 15px;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.3s;
}

.logout-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 30px;
}

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

.page-header h1 {
  font-size: 32px;
  color: #333;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: #6c757d;
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  display: inline-block;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.stat-card {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  gap: 20px;
}

.stat-card.active {
  border-left: 4px solid #28a745;
}

.stat-card.warning {
  border-left: 4px solid #ffc107;
}

.stat-icon {
  font-size: 40px;
}

.stat-content h3 {
  font-size: 32px;
  color: #667eea;
  margin-bottom: 5px;
}

.stat-content p {
  color: #666;
  font-size: 14px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

.dashboard-card {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.dashboard-card h2 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #333;
}

.exam-stats {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 12px;
  background: #f8f9fa;
  border-radius: 8px;
}

.stat-row.success {
  background: #d4edda;
}

.stat-row.danger {
  background: #f8d7da;
}

.stat-row.highlight {
  background: #d1ecf1;
  font-weight: bold;
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px;
  background: #f8f9fa;
  border-radius: 8px;
}

.activity-icon {
  font-size: 24px;
}

.activity-content strong {
  display: block;
  color: #333;
}

.activity-content small {
  color: #666;
  font-size: 12px;
}

.quick-actions {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.quick-actions h2 {
  margin-bottom: 20px;
}

.action-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-decoration: none;
  border-radius: 10px;
  transition: transform 0.2s;
}

.action-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.action-btn span:first-child {
  font-size: 32px;
}

.table-container {
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

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

.data-table thead {
  background: #667eea;
  color: white;
}

.data-table th {
  padding: 15px;
  text-align: left;
  font-weight: 600;
}

.data-table td {
  padding: 15px;
  border-bottom: 1px solid #e9ecef;
}

.data-table tbody tr:hover {
  background: #f8f9fa;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  background: #667eea;
  color: white;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: #28a745;
}

.badge-danger {
  background: #dc3545;
}

.badge-secondary {
  background: #6c757d;
}

.btn-edit,
.btn-delete,
.btn-toggle {
  padding: 6px 12px;
  border-radius: 5px;
  text-decoration: none;
  font-size: 14px;
  display: inline-block;
  margin: 0 2px;
}

.btn-edit {
  background: #ffc107;
}

.btn-toggle {
  background: #17a2b8;
}

.btn-delete {
  background: #dc3545;
}

.text-danger {
  color: #dc3545;
}

.alert {
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background: white;
  margin: 50px auto;
  padding: 30px;
  border-radius: 12px;
  max-width: 600px;
  position: relative;
}

.close {
  position: absolute;
  right: 20px;
  top: 20px;
  font-size: 28px;
  cursor: pointer;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 2px solid #e1e8ed;
  border-radius: 8px;
  font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-bar {
  background: white;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.filter-form {
  display: flex;
  gap: 15px;
}

.filter-form select {
  padding: 10px;
  border: 2px solid #e1e8ed;
  border-radius: 8px;
  font-size: 14px;
}

.questions-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.question-card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.question-header {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.difficulty {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.difficulty-leicht {
  background: #d4edda;
  color: #155724;
}

.difficulty-mittel {
  background: #fff3cd;
  color: #856404;
}

.difficulty-schwer {
  background: #f8d7da;
  color: #721c24;
}

.points {
  padding: 4px 12px;
  background: #e7e9fc;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  color: #667eea;
}

.question-text {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 15px;
  color: #333;
}

.question-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid #e9ecef;
}

.form-container {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.answers-section {
  margin-top: 30px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 8px;
}

.answers-section h3 {
  margin-bottom: 20px;
}

.answer-group {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
}

.answer-group input[type="text"] {
  flex: 1;
}