header {
    background-color: #e9ecef;
    height: 12.5vh;
    width: 100vw;

    display: flex;
    flex-direction: row;
    align-items: center;
    position: sticky; /* stays visible when scrolling */
    top: 0;
    z-index: 1000; /* keeps it above content visually */
}

header img{
    height: 10vh;
    margin-left: 5vw;
}

header img:hover{
    cursor: pointer;
    transform: scale(2.40)
}

.header-auth-buttons {
    margin-left: auto;
    margin-right: 5vw;
    display: flex;
    gap: 12px;
    align-items: center;
}

@media(max-width: 768px) {
    header{
        display: flex;
        flex-direction: column 
    }

    .header-auth-buttons {
        display: none;
    }
}

.mobile-cta-button {
    display: none;
    padding: 30px 5vw;
    text-align: center;
}

@media(max-width: 768px) {
    .mobile-cta-button {
        margin-top: 50px;
        display: flex;
        flex-direction: row;
        justify-content: center;
        gap: 12px;
    }

    .mobile-cta-button .sign-up-btn,
    .mobile-cta-button .sign-in-btn {
        display: block;
        flex: 1;
        max-width: 200px;
    }

    .mobile-cta-button .sign-up-btn a,
    .mobile-cta-button .sign-in-btn a {
        display: block;
        width: 100%;
        padding: 16px 0;
        font-size: 15px;
        text-align: center;
        box-sizing: border-box;
    }
}