#sidebar {
  width: 250px;
  min-height: 100vh;
  
}
.list-group-item {
  border: none;
}


body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f8f9fa;
}
.nav-tabs .nav-link.active {
    background-color: #0d6efd !important;
    color: white !important;
}
.btn-warning {
    background-color: #f39c12;
    border: none;
}
.btn-warning:hover {
    background-color: #e67e22;
    color: white;
}

.announcement-image {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    border-radius: 8px;
    display: block;
    margin: 10px auto;
}

#loader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader-content {
  text-align: center;
  animation: fadeIn 0.3s ease-in-out;
}
.loader-content img {
  width: 120px;
  animation: pulse 1.5s infinite;
}
.loader-content p {
  margin-top: 15px;
  font-weight: bold;
  color: #004080;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}