#slideButton {
    position: fixed;
    top: 20%;
    right: 0;
    transform: translateY(-50%);
    background-color: rgba(255, 109, 109, 0.7);
    color: white;
    padding: 15px;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
    cursor: pointer;
    z-index: 1000;
    transition: right 0.3s ease, transform 0.3s ease;
}

#slideButton:hover {
    right: 10px;
    transform: translateY(-50%) scale(1.05);
}

#slidePanel {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background-image: url('../images/backgrounds/Wallpapers_Celestials_Phone.jpg');
    background-size: cover;
    box-shadow: -3px 0 10px rgb(255, 109, 109);
    transition: right 0.5s ease;
    z-index: 999;
    overflow-y: auto;
    padding: 20px;
    box-sizing: border-box;
    overflow: hidden;
}

#slidePanel.open {
    right: 0;
}

/* 
 * Checklist Overlay — responsive and smooth
 */
@keyframes float {
    0% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0);
    }
}

#islandNameImg {
    position: absolute;
    width: 240px;
    height: 135px;
    top: 150px;
    left: 85px;
}

#islandImg {
    position: absolute;
    top: 260px;
    /* 30% of viewport height */
    left: 50px;
    /* 20% of viewport width */
    animation: float 3s ease-in-out infinite;
}


#prevPage {
    position: absolute;
    left: 70px;
    top: 500px;
    /* instead of % */
    background-color: mediumpurple;
    text-shadow: -1px -1px 0 #8C00E3,
        1px -1px 0 #8C00E3,
        -1px 1px 0 #8C00E3,
        1px 1px 0 #8C00E3;
    border: #391759 1px solid;
    color: black;
    /* padding: 0.8vh 1.2vw; */
}

#nextPage {
    position: absolute;
    left: 210px;
    top: 500px;
    /* instead of % */
    background-color: mediumpurple;
    text-shadow: -1px -1px 0 #8C00E3,
        1px -1px 0 #8C00E3,
        -1px 1px 0 #8C00E3,
        1px 1px 0 #8C00E3;
    border: #391759 1px solid;
    color: black;
    /* padding: 0.8vh 1.2vw; */
}

#islandDropdown {
    width: 50%;
    margin-top: 10px;
    font-size: 16px;
    padding: 5px 10px;
    border-radius: 5px;
    text-shadow: -1px -1px 0 #8C00E3,
        1px -1px 0 #8C00E3,
        -1px 1px 0 #8C00E3,
        1px 1px 0 #8C00E3;
    background-color: mediumpurple;
    position: absolute;
    z-index: 1;
    top: 70%;
    left: 505%;
    text-align: center;
}

#islandDropdown {
    position: absolute;
    top: 450px;
    /* instead of 70vh */
    left: 100px;
    /* instead of 5vw */
}

#switchIsland {
    position: absolute;
    left: 110px;
    top: 550px;
    background-color: mediumpurple;
    text-shadow: -1px -1px 0 #8C00E3,
        1px -1px 0 #8C00E3,
        -1px 1px 0 #8C00E3,
        1px 1px 0 #8C00E3;
    border: #391759 1px solid;
    color: black;
}

#checklistMobileMenu {
    display: none;
}

#showChecklistMobile {
    position: absolute;
    top: 90%;
    left: 50%;
    transform: translateX(-50%);
    background-color: mediumpurple;
    text-shadow: -1px -1px 0 #8C00E3,
        1px -1px 0 #8C00E3,
        -1px 1px 0 #8C00E3,
        1px 1px 0 #8C00E3;
    border: #391759 1px solid;
    color: black;
}