.btn-doc-pdf {
    background-color: #d9534f; /* Bootstrap danger red */
    color: #fff;
}

.btn-doc-word {
    background-color: #2b579a; /* Microsoft Word blue */
    color: #fff;
}

.btn-doc-excel {
    background-color: #217346; /* Microsoft Excel green */
    color: #fff;
}

.btn-doc-powerpoint {
    background-color: #d24726; /* PowerPoint orange */
    color: #fff;
}

.btn-doc-generic {
    background-color: #6c757d; /* Bootstrap secondary gray */
    color: #fff;
}

    /* Optional: Hover effect to match Bootstrap */
    .btn-doc-pdf:hover,
    .btn-doc-word:hover,
    .btn-doc-excel:hover,
    .btn-doc-powerpoint:hover,
    .btn-doc-generic:hover {
        filter: brightness(90%);
        text-decoration: none;
        color: #fff;
    }