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

.navbar-brand {
    font-weight: bold;
}

.card {
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    font-weight: bold;
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.table th {
    background-color: #f1f3f4;
    font-weight: 600;
}

.alert {
    border-radius: 8px;
}

#signatureCanvas {
    background-color: white;
    touch-action: none;
}

.signature-preview {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

.nav-tabs .nav-link {
    border: 1px solid transparent;
    border-top-left-radius: 0.375rem;
    border-top-right-radius: 0.375rem;
}

.nav-tabs .nav-link.active {
    color: #495057;
    background-color: #fff;
    border-color: #dee2e6 #dee2e6 #fff;
}

.badge {
    font-weight: 500;
    padding: 5px 10px;
}

@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    #signatureCanvas {
        width: 100% !important;
        height: 150px !important;
    }
}