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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f5f5;
}

.admin-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  background-color: #2c3e50;
  color: white;
  padding: 0;
  position: static;
  transform: none;
}

.logo {
  padding: 20px;
  background-color: #34495e;
  text-align: center;
}

.logo h2 {
  color: white;
  font-size: 1.5rem;
}

.nav-menu {
  list-style: none;
  padding: 0;
}

.nav-menu li {
  border-bottom: 1px solid #34495e;
}

.nav-menu a {
  display: block;
  padding: 15px 20px;
  color: #ecf0f1;
  text-decoration: none;
  transition: background-color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
  background-color: #3498db;
}

.main-content {
  flex: 1;
  padding: 30px;
  background-color: white;
  margin: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-size: 14px;
  transition: background-color 0.3s;
}

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

.btn-primary:hover {
  background-color: #2980b9;
}

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

.btn-success:hover {
  background-color: #229954;
}

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

.btn-danger:hover {
  background-color: #c0392b;
}

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

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #2c3e50;
}

.form-control {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.form-control:focus {
  outline: none;
  border-color: #3498db;
  box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

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

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

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

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

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

.table th {
  background-color: #f8f9fa;
  font-weight: bold;
  color: #2c3e50;
}

.table tr:hover {
  background-color: #f5f5f5;
}

/* Added hamburger menu styles and responsive sidebar */
.hamburger-btn {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  background: #2c3e50;
  border: none;
  padding: 10px;
  border-radius: 4px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  width: 45px;
  height: 45px;
}

.hamburger-btn span {
  display: block;
  height: 3px;
  width: 25px;
  background: white;
  border-radius: 3px;
  transition: all 0.3s ease;
}

.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Responsive sidebar styles */
@media (max-width: 768px) {
  .hamburger-btn {
    display: flex;
  }

  .sidebar {
    position: fixed;
    left: -250px;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: left 0.3s ease;
  }

  .sidebar.active {
    left: 0;
  }

  .main-content {
    margin-left: 0;
    transition: margin-left 0.3s ease;
  }

  .main-content.shifted {
    margin-left: 250px;
  }
}

@media (min-width: 769px) {
  .sidebar {
    position: static;
    transform: none;
  }
}

/* Added overlay for mobile menu */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

.sidebar-overlay.active {
  display: block;
}