:root {
    --primary-color: #3498db;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
}
body { background-color: #f8f9fa; }
.navbar-brand { font-weight: bold; }
.card { border: none; box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); }
.card-header { background-color: #fff; border-bottom: 1px solid #eee; }
.list-group-item { border-left: none; border-right: none; transition: background-color 0.15s; }
.list-group-item:hover { background-color: #f8f9fa; }
.badge { font-weight: 500; }
.form-control:focus, .form-select:focus { border-color: var(--primary-color); box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25); }
.btn-purple { background-color: #9b59b6; border-color: #9b59b6; color: white; }
.btn-purple:hover { background-color: #8e44ad; border-color: #8e44ad; color: white; }
.progress { border-radius: 10px; overflow: hidden; }
.form-check-input:checked { background-color: var(--success-color); border-color: var(--success-color); }
.form-check-input:checked + .form-check-label { text-decoration: line-through; color: #6c757d; }
.bi-file-earmark-pdf { color: #dc3545; }
.bi-file-earmark-word { color: #0d6efd; }
.bi-file-earmark-excel { color: #198754; }
.bi-file-earmark-image { color: #0dcaf0; }
@media (max-width: 768px) {
    .container-fluid { padding-left: 1rem; padding-right: 1rem; }
    .btn-group { flex-wrap: wrap; }
    .btn-group .btn { margin-bottom: 0.25rem; }
    .card-body { padding: 1rem; }
    h1.h3 { font-size: 1.5rem; }
    .table { font-size: 0.875rem; }
}
.alert { animation: slideIn 0.3s ease; }
@keyframes slideIn { from { transform: translateY(-10px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.min-vh-100 { min-height: 100vh; }
.table th { font-weight: 600; border-top: none; }
.drag-highlight { background-color: #e3f2fd !important; border: 2px dashed #2196f3 !important; }
@media print { .navbar, .btn, .alert { display: none !important; } .card { box-shadow: none; border: 1px solid #ddd; } }