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

body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Navigation */
.nav {
  background: #2c3e50;
  color: white;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav a {
  color: white;
  text-decoration: none;
  margin-left: 15px;
}

.nav a:hover {
  text-decoration: underline;
}

/* Forms */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: #3498db;
  color: white;
}

.btn-danger {
  background: #e74c3c;
  color: white;
}

.btn-success {
  background: #27ae60;
  color: white;
}

.btn-secondary {
  background: #95a5a6;
  color: white;
}

.btn:hover {
  opacity: 0.9;
}

.btn + .btn {
  margin-left: 8px;
}

/* Cards */
.card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 15px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: #666;
  margin-bottom: 10px;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

th, td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background: #f8f9fa;
  font-weight: bold;
}

tr:hover {
  background: #f8f9fa;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: white;
  margin: 10% auto;
  padding: 30px;
  border-radius: 8px;
  max-width: 500px;
  width: 90%;
  position: relative;
}

.modal .close {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
  background: none;
  border: none;
  color: #333;
}

.modal .close:hover {
  color: #e74c3c;
}

/* Alerts */
.alert {
  padding: 12px 20px;
  border-radius: 4px;
  margin-bottom: 15px;
}

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

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-info {
  background: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* Progress Bar */
.progress-bar {
  background: #e9ecef;
  border-radius: 4px;
  height: 20px;
  overflow: hidden;
}

.progress-bar-fill {
  background: #3498db;
  height: 100%;
  transition: width 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
  font-weight: bold;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 2px solid #ddd;
  margin-bottom: 20px;
}

.tab {
  padding: 10px 20px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-size: 14px;
}

.tab.active {
  border-bottom-color: #3498db;
  color: #3498db;
  font-weight: bold;
}

.tab:hover {
  color: #3498db;
}

/* Auth Page */
.auth-container {
  max-width: 400px;
  margin: 80px auto;
}

.auth-container .card {
  padding: 30px;
}

/* Stars */
.stars {
  color: #f39c12;
  font-size: 18px;
}

/* Hidden utility */
.hidden {
  display: none;
}

/* Page sections */
.page {
  display: none;
}

.page.active {
  display: block;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: bold;
}

.badge-published {
  background: #d4edda;
  color: #155724;
}

.badge-draft {
  background: #fff3cd;
  color: #856404;
}

.badge-archived {
  background: #e2e3e5;
  color: #383d41;
}

/* Section headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.section-header h2 {
  margin: 0;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.stat-card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-card .stat-value {
  font-size: 2em;
  font-weight: bold;
  color: #3498db;
}

.stat-card .stat-label {
  color: #666;
  font-size: 14px;
  margin-top: 5px;
}

/* Search */
.search-box {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.search-box input {
  flex: 1;
  padding: 10px 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav {
    flex-direction: column;
    gap: 10px;
  }

  .tabs {
    flex-wrap: wrap;
  }
}