#overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 500;
}

#popup {
    position: fixed;
    min-width: 15vw;
    width: fit-content;
    max-width: 85vw;
    max-height: 90vh;
    min-height: fit-content;

    overflow: hidden;
    
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 10px;
    padding: 3px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 1);
    display: none;
    z-index: 1000;
    text-align: center;
    justify-content: center;
    align-items: center;

    background-color: var(--popup-bg-color);
    border-style: solid;
    border-color: var(--popup-border-color);
    border-width: var(--card-border-width);
    border-radius: 15px;
}

#frame-container {
    margin: 0 auto;
    /*margin: 0px 0px 10px 0px;*/
    max-height: 80vh;
}

#frame-container img {
    max-width: fit-content;
    max-height: 70vh;
    /*object-fit: contain;*/
    display: block;
    margin: 0 auto;
    overflow: hidden;
    padding: 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translate(-50%, -60%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
}

#prev, #next, #copyFrameLinkBtn {
    font-family: san-serif, Geneva, Tahoma, sans-serif;
    color: var(--popup-button-text-color);
    font-size: 1rem;
    margin: 0 10px;
    background: var(--popup-bg-color);
    border-width: 1px;
    border-style: solid;
    border-color: var(--popup-border-color);
    border-radius: 15px;
    cursor: pointer;
}   

#frame-scrollbar {
    display: block;
    width: auto;
    margin: 5px 5px 5px 5px;
}

.close-button {
    position: absolute;
    top: 0;
    right: 0.8rem;
    cursor: pointer;
    font-size: 1.5em;
    width: fit-content;
    height: fit-content;
    max-width: fit-content;
    max-height: fit-content;
    background: transparent;
    border-style: none;
    border-width: 0 0 0 0;
    color: var(--popup-title-text-color);
    padding: 0px;
}

.close-button:hover {
    scale: 120%;
    border-width: 0px;
    color: white;
}

#popup .prev-next-buttons {    
    height: 3rem;
    width: auto;
    margin: 0.5rem;
    border-width: var(--card-border-width);
    background: var(--popup-button-color);
    color: var(--popup-button-text-color);
    transition: all 0.2s ease-out;
}

#prev:hover, #next:hover, #copyFrameLinkBtn:hover {
    background: var(--popup-button-hover-color);
    color: var(--popup-button-hover-text-color);
    scale: 104%;
}

#popup button:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--popup-button-hover-color); 
}

.popup-controls {
    display: flex;
    flex-direction: column;
    width: 100%; 
    margin-bottom: 5px;
    margin-top: 5px;
    overflow: hidden;
}

.button-controls {
    display: grid;
    max-width: 100%;
    padding: 0;
    margin: 0;
    column-gap: 5px;
    grid-template-columns: 0.33fr 0.34fr 0.33fr;
}

.fade-in {
    animation: fadeIn 0.15s ease-out forwards;
}

.fade-out {
    animation: fadeOut 0.15s ease-in forwards;
}

.popup-title{
    font-family: san-serif, Geneva, Tahoma, sans-serif;
    font-size: 1rem;
    color: var(--popup-title-text-color);
    padding: 5px;
    margin: 0 auto;
}

.popup-note{
    font-family: san-serif, Geneva, Tahoma, sans-serif;
    font-size: 1em;
    color: var(--popup-text-color);
    padding: 0.5rem 0 0.5rem 0;
    margin: 0;
}

@media(max-width: 1200px) {
    #frame-container img {
        max-width: fit-content;
        max-height: 70vh;
   }

    #popup {
        max-width: 95vw;

        min-width: fit-content;
        padding: 3px;
        margin: 0;
        box-shadow: 0 0px 0px rgba(0, 0, 0, 1);
    }
    .close-button {
        position: absolute;
        top: 0rem;
        right: 0.8rem;
        font-size: 1.5em;
    }
}

@media(max-width: 1000px) {
    #frame-container{
        max-width: 90vw;
        max-height: 75vh;
    }
    #frame-container img{
        max-width: 90vw;
        max-height: 65vh;
    }
}

@media(max-width: 768px) {
    #popup {
        width: 98vw;
        padding: 0px;
        margin: 0;
        box-shadow: none;
    }
    #frame-container{
        max-width: 95vw;
        max-height: 75vh;
    }
    #frame-container img{
        max-width: 95vw;
        max-height: 65vh;
    }
    .popup-note {
        display: none;
    }
    #prev, #next, #copyFrameLinkBtn {
        font-size: 15px;
    }
}

@media(max-width: 500px) {
    .popup-title {
        padding: 5px;
        font-size: 1em;
    }
    .popup-note {
        display: none;
    }
    .close-button {
        font-size: 1.2em;
    }
    #prev, #next, #copyFrameLinkBtn {
        font-size: 12px;
    }
}