/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: 1.5rem;
    /* Slightly smaller than previous h1 */
    font-weight: 400;
    z-index: 40;
    letter-spacing: -0.5px;
    background: transparent;
    /* Or semi-transparent if needed */
    pointer-events: none;
    /* Let clicks pass through if needed */
    transition: opacity 0.5s ease;
}

@media (max-width: 600px) {
    .app-header {
        font-size: 1.2rem;
        padding: 1rem;
    }
}