/* --- Component: Login/Out Button --- */
.tk-header-signin-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--tk-dark-brown);
    color: var(--tk-cream);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}
.tk-header-signin-btn:hover {
    background-color: var(--tk-golden);
    color: var(--tk-dark-brown);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}