body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

h1, h2, h3 {
    color: #343a40;
}

.container {
    background: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
    margin-top: 20px;
}

.table th {
    background-color: #dee2e6;
    color: #212529;
}

.table td, .table th {
    vertical-align: middle;
}

.btn {
    border-radius: 50px;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    border-radius: 0.5rem;
}

footer {
    margin-top: 4rem;
    padding: 1rem;
    text-align: center;
    color: #6c757d;
}