:root {
    --app-font-family: Helvetica, Arial, sans-serif, Verdana, Geneva, Tahoma, sans-serif;
    --app-first-color: #8da581;
    --app-first-color-b: #4e6841;
    --app-second-color: goldenrod;;
}

body {
    margin: 0;
    padding: 0;
    font-size: 16px;
    font-weight: normal;
    font-family: var(--app-font-family);
    background-color: white;
}

button {
    color: white;
    background-color: var(--app-first-color);
    border: solid 2px var(--app-first-color);
    border-radius: 7px;
    /* box-shadow: 0px 0px 2px 2px var(--app-first-color); */
    font-size: 18px;
    font-weight: normal;
    font-family: var(--app-font-family);
    cursor: pointer;
}
button:hover {
    border-color: var(--app-first-color-b);
}
button:active {
    background-color: var(--app-first-color-b);
    border-color: var(--app-first-color);
}

div#app-container {
    position: relative;
    box-sizing: border-box;
    height: 100%;
    width: 100%;

    display: grid;
    grid-template-areas: 
        "header header"
        "thumbnails workspace"
        ;
    grid-template-rows: 60px 1fr;
    grid-template-columns: 240px 1fr;

    overflow: hidden;
    /* background-color: rgb(221, 201, 240); */
}

div#app-container > #app-header {
    position: relative;
    grid-area: header;
    box-sizing: border-box;

    display: grid;
    grid-template-columns: repeat(2, 150px);
    grid-template-rows: 40px;
    grid-gap: 30px;
    align-items: stretch;
    align-content: center;
    justify-content: center;

    overflow: hidden;

    /* background-color: var(--app-second-color); */
    border-bottom: solid 4px var(--app-second-color);
}

div#app-container > #main-image-items {
    position: relative;
    grid-area: thumbnails;
    box-sizing: border-box;

    display: grid;
    grid-auto-rows: 200px;
    grid-row-gap: 30px;
    place-items: center;

    padding: 20px 0;
    overflow-y: auto;
    /* background-color: var(--app-first-color); */
}

div#app-container > #app-workspace {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-area: workspace;
    box-sizing: border-box;
    overflow: hidden;
    /* background-color: #ffff64; */
}

#main-image-items > via-thumbnail-viewer {
    position: relative;
    display: block;
    box-sizing: border-box;

    width: 216px;
    height: 216px;
    border: solid 8px #e9dbb9;
    border-radius: 7px;

    cursor: pointer;

    /* background-color: #b8e2fa; */
}
#main-image-items > via-thumbnail-viewer[selected] {
    /* border-color: #f16666; */
    border-color: var(--app-second-color);
}

#main-image-viewer {
    position: relative;
    display: grid;
    box-sizing: border-box;
    border-left: solid 2px var(--app-second-color);
    border-right: solid 2px var(--app-second-color);
    /* place-self: center; */
    /* background-color: azure; */
}
#main-image-viewer > canvas {
    position: absolute;
    place-self: center;
}

#main-text-results {
    position: relative;
    display: block;

    white-space-collapse: preserve;
    /* text-wrap: nowrap; */

    overflow-y: auto;
    overflow-x: hidden;
    
    padding: 20px;
    font-size: 16px;
    line-height: 22px;;

    /* background-color: #ffff64; */
}


via-config-dialog > dialog {
    width: 320px;
    /* height: 200px; */
    /* background-color: aliceblue; */
    border: none;
    box-shadow: 0px 0px 2px 2px var(--app-second-color);
}

via-config-dialog > dialog > * {
    box-sizing: border-box;
    /* border: solid 1px red; */
    width: 100%;
}

via-config-dialog > dialog > h2 {
    font-size: 20px;
    padding: 0;
    margin: 0 0 16px 0;
    color: darkslategray;
}

via-config-dialog > dialog > div {
    font-size: 20px;
    padding: 0;
    margin: 0 0 6px 0;
}

via-config-dialog > dialog > div:last-child {
    display: flex;
    align-items: center;
    justify-content: end;
    margin-top: 16px;
}

via-config-dialog > dialog > div > input {
    box-sizing: border-box;
    width: 100%;
    height: 32px;
    font-size: 16px;
    font-family: math;
}

via-config-dialog > dialog > div > button {
    width: 100px;
    height: 32px;
    font-size: 16px;
}

via-busy-dialog > dialog {
    background-color: transparent;
    border: none;
    outline: none;
    overflow: hidden;
}
via-busy-dialog > dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.25);
    border: none;
    overflow: hidden;
}
via-busy-dialog > dialog > svg {
    height: 96px;
    width: 96px;
    fill: var(--app-second-color);
    animation: spin 2s linear infinite;
}
@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}