/* Content Loader Styles */
.loading-content {
    transition: opacity 0.3s ease;
}

.loading-content::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1000;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Smooth transitions for content changes */
#container .main {
    transition: opacity 0.3s ease;
}

.nav li.current a {
    color: #0048ff !important;
    font-weight: bold;
}

.nav li a:hover {
    color: #0066cc;
    transition: color 0.2s ease;
}