body {
    background-color: #f8f9fa;
    font-family: 'Arial', sans-serif;
}
.login-body {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}
.main-header {
    background-color: #dc3545;
    padding: 20px;
}
.login-container {
    width: 100%;
    max-width: 400px;
}
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.navbar-brand {
    font-weight: bold;
}
.nav-link {
    transition: color 0.3s ease;
}
.nav-link:hover {
    color: #dc3545 !important;
}
.container {
    max-width: 900px;
}
h1, h3, h4 {
    color: #343a40;
}
.card {
    border-radius: 15px;
    margin-bottom: 20px;
    border: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}
.card-body {
    padding: 20px;
}
.alert {
    border-radius: 8px;
}
.table {
    background-color: #fff;
    border-radius: 8px;
}
.table th, .table td {
    vertical-align: middle;
    padding: 5px;
    font-size: 0.9rem;
}
.table-sm th, .table-sm td {
    padding: 3px;
    font-size: 0.85rem;
}
.btn i {
    margin-right: 5px;
}
.btn-sm {
    padding: 2px 5px;
    font-size: 0.8rem;
}
.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
}
.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}
.btn-primary {
    background-color: #2a5298;
    border-color: #2a5298;
}
.btn-primary:hover {
    background-color: #1e3c72;
    border-color: #1e3c72;
}
.btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
}
.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
}
.text-primary {
    color: #2a5298 !important;
}
.img-thumbnail {
    border-radius: 5px;
}
.nav-tabs .nav-link {
    color: #343a40;
}
.nav-tabs .nav-link.active {
    background-color: #fff;
    border-color: #dee2e6 #dee2e6 #fff;
    color: #dc3545;
}
.tab-content {
    background-color: #fff;
    padding: 20px;
    border: 1px solid #dee2e6;
    border-top: none;
    border-radius: 0 0 10px 10px;
}
.pagination .page-link {
    color: #2a5298;
}
.pagination .page-item.active .page-link {
    background-color: #2a5298;
    border-color: #2a5298;
}
.input-group .form-control {
    border-radius: 5px 0 0 5px;
}
.input-group .btn {
    border-radius: 0 5px 5px 0;
}
.input-group select.form-control {
    border-radius: 0 5px 5px 0;
}
footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.1);
}
@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    .nav-link {
        padding: 0.5rem;
    }
    .btn {
        font-size: 0.9rem;
    }
    .card {
        margin: 10px;
        max-width: 90% !important;
    }
    .table {
        font-size: 0.9rem;
    }
    .login-container {
        margin: 10px;
    }
    footer {
        position: static;
    }
}