.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

.sidebar {
  position: fixed;
  top: 0;
  left: -280px;
  width: 280px;
  height: 100vh;
  background: white;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
  transition: left 0.3s ease;
  z-index: 999;
  overflow-y: auto;
}

.sidebar.open {
  left: 0;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid #e0e0e0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.sidebar-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.sidebar-nav {
  padding: 1rem 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  color: #333;
  text-decoration: none;
  transition: all 0.3s ease;
  border-left: 4px solid transparent;
}

.nav-item:hover {
  background: #f5f5f5;
  border-left-color: #667eea;
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-left-color: #667eea;
  font-weight: 600;
}

.nav-icon {
  font-size: 1.5rem;
  margin-right: 1rem;
}

.nav-label {
  font-size: 1rem;
}

/* Menu Toggle Button */
.menu-toggle {
  position: fixed;
  top: 1rem;
  left: 1rem;
  width: 50px;
  height: 50px;
  background: white;
  border: none;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 997;
  transition: all 0.3s ease;
}

.menu-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

@media (max-width: 768px) {
  .sidebar {
    width: 250px;
    left: -250px;
  }
}