.theme-button {
    background-color: #e6f4ea; /* soft green tint */
    color: #2f4f2f; /* dark olive for contrast */
    border: 2px solid #c3e6cb; /* muted green border */
    padding: 8px 16px;
    margin-right: 8px;
    border-radius: 6px;
    font-weight: normal;
    transition: all 0.3s ease;
    cursor: pointer;
}

    .theme-button:hover {
        background-color: #d4edda; /* slightly deeper green on hover */
    }

.active-theme {
    background-color: #a8d5ba !important; /* gentle green highlight */
    color: #1e3d1e !important; /* deeper green text */
    border-color: #8fcf9c !important;
    font-weight: bold;
}