body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar .nav-link {
    padding: 12px 20px;
    border-radius: 5px;
    margin-bottom: 5px;
    transition: all 0.3s;
}

.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar .nav-link.active {
    background-color: #0d6efd !important;
}

.flex-grow-1 {
    margin-left: 250px;
}

.card {
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    font-weight: bold;
}

.table {
    margin-bottom: 0;
}

.badge {
    padding: 5px 10px;
}

.btn {
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.alert {
    border-radius: 8px;
}

@media (max-width: 768px) {
    .sidebar {
        width: 100% !important;
        position: relative;
        height: auto;
    }

    .flex-grow-1 {
        margin-left: 0;
    }
}