body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.sidebar {
    height: 100vh;
    background-color: #212529;
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    z-index: 1000;
    transition: all 0.3s;
}
.sidebar .nav-link {
    color: #c2c7d0;
    padding: 12px 20px;
    border-radius: 5px;
    margin: 5px 15px;
    font-weight: 500;
}
.sidebar .nav-link:hover, .sidebar .nav-link.active {
    background-color: #0d6efd;
    color: #fff;
}
.main-content {
    margin-left: 250px;
    padding: 20px;
    transition: all 0.3s;
}
.topbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 15px 25px;
    margin-bottom: 25px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
@media (max-width: 768px) {
    .sidebar {
        margin-left: -250px;
    }
    .sidebar.show {
        margin-left: 0;
    }
    .main-content {
        margin-left: 0;
    }
}
/* Skeleton Loader */
.skeleton {
    background: linear-gradient(90deg, #e2e5e7 25%, #f1f3f5 50%, #e2e5e7 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    height: 20px;
    width: 100%;
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
/* AJAX Autocomplete */
.autocomplete-suggestions {
    border: 1px solid #ced4da;
    background: #fff;
    position: absolute;
    z-index: 1050;
    width: 100%;
    max-height: 200px;
    overflow-y: auto;
    border-radius: 0 0 5px 5px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.autocomplete-suggestion {
    padding: 10px 15px;
    cursor: pointer;
}
.autocomplete-suggestion:hover {
    background: #f8f9fa;
    color: #0d6efd;
}
/* Modals styling */
.modal-content {
    border: none;
    border-radius: 12px;
}
.modal-header {
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
.modal-footer {
    border-top: 1px solid rgba(0,0,0,0.05);
}