.main-div {
    position: absolute;
    top: 0;
    left: 0;
    padding: 0 4rem;
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

/* logo */
.main-div .logo-span {
    display: flex;
}

.main-div .logo-span .spaceship {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 60px;
    height: 60px;
    opacity: 0;
    transform: scale(0.4);
}

.logo-span .spaceship p {
    padding-top: .8rem;
    color: var(--black);
    font-size: 1rem;
}

.logo-span:hover .spaceship:hover {
    transition: transform 2s ease-in opacity 1s ease-in;
    animation: hover 6s infinite;
}

@keyframes hover {
    0% {
        transform: translate(-6px);
        opacity: 0;
    }

    20% {
        transform: translate(80px, 80px);
        opacity: 1;
    }

    40% {
        transform: translate(70px, 60px);
        opacity: 1;
    }

    60% {
        transform: translate(100px, 80px);
        opacity: 1;
    }

    80% {
        transform: translate(80px, -10px);
        opacity: 1;
    }

    100% {
        transform: translate(180px, -30px) translateY(160px);
    }
}

/* video background */
.main-div video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.main-div .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url(https://source.unsplash.com/random/?animals);
    /* background-image: url(/assets/index/tiger.jpg); */
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    mix-blend-mode: hue;
    opacity: 0.5;
}

.text-container {
    position: relative;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1.2em;
    max-width: 550px;
    z-index: 2;
}

.text-container h2 {
    font-family: 'Black And White Picture', sans-serif;
    font-size: 7rem;
    font-weight: bold;
    color: var(--black);
}

.text-container span {
    color: var(--yellow);
    font-family: 'Black And White Picture', sans-serif;
    text-shadow: 2px 7px 1px var(--black);
    letter-spacing: 5px;
}

.text-container p {
    color: var(--black);
    font-size: 1.5rem;
    font-weight: bold;
    line-height: 1.8;
}

.text-container button {
    position: absolute;
    top: 112%;
    background-color: var(--yellow);
    color: var(--black);
    padding: 1em;
    border-radius: 54% 46% 70% 30% / 30% 49% 51% 70%;
    border: none;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0px 5px 8px rgba(0, 0, 0, 0.8);
    transition: background-color .8s ease-in, border-radius 1s ease-in-out, letter-spacing 1s ease-out;
    cursor: pointer;
}

.text-container button:hover,
.text-container button:focus {
    background-color: var(--black);
    color: var(--yellow);
    border-radius: 82% 18% 70% 30% / 46% 49% 51% 54%;
    letter-spacing: 3px;
}

.text-container button:active {
    background: linear-gradient(45deg, var(--yellow), var(--pink));
    color: var(--black);
    transform: scale(0.98);
}

/* custom tooltip: https://www.w3schools.com/css/css_tooltip.asp */
.tooltip {
    position: relative;
    margin-top: 2rem;
}

.tooltip img {
    width: 80%;
    height: 80%;
    margin: .6rem .5rem;
    border-radius: 6px;
}

.tooltip span {
    position: absolute;
    top: 70%;
    left: 20%;
    width: 70%;
    background-color: var(--black);
    color: var(--white);
    font-size: .9rem;
    font-family: 'Syne Mono', monospace;
    text-align: center;

}

.tooltip .tooltip-content {
    position: absolute;
    padding: 5px 0;
    width: 130px;
    top: -10px;
    left: 130%;
    margin-left: -60px;
    border-radius: 6px;
    background-color: var(--yellow);
    color: var(--black);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease-in;
    z-index: 1;
}

/* left-pointing tooltip arrow */
.tooltip .tooltip-content::after {
    content: "";
    position: absolute;
    top: 17%;
    right: 100%;
    margin-top: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: transparent var(--yellow) transparent transparent;
}

.tooltip:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
}

/* media queries
/* small screens */
@media (max-width: 650px) {
    .main-div {
        padding: 0 1.5rem;
    }

    header {
        padding: 1.8rem 1.3rem 0;
    }

    .text-container h2 {
        font-size: 5rem;
        line-height: 0.8;
    }

    .text-container p,
    .text-container button {
        font-size: 1.2rem;
    }
}

/* extra-small screens */
@media (max-width: 390px) {
    .menu li {
        margin: 1.7rem 0;
    }

    .menu li a {
        padding: .6rem;
        font-size: 1rem;
    }

    .text-container h2 {
        font-size: 4rem;
    }

    /* hide tooltip */
    .tooltip .tooltip-content {
        display: none;
    }
}