:root {
    --accent-primary: lightblue; /* todo */


    --content-max-width: 1600px;

    --project-button-width: 25em;
}

body {
    transition: all var(--trans-out) ease-in-out;
    transition-property: background;

    background: var(--bg-primary);
    width: 100%;
    margin: 0;
    overflow: hidden;

    color: var(--col-primary);
    font-family: sans-serif;
}

#previewer {
    width: 100px;
    height: 100px;
    background: conic-gradient(from 0deg at center, transparent 35%, white 40%, white 60%, transparent 65%);
}

#projects-container {
    display: flex;

    gap: 1em;
}

#selection-container {
    flex-direction: column;
}

#preview-container {
    position: relative;

    flex-grow: 1;
}

.selection-preview ul {
    list-style: none;
}

li {
    margin-bottom: 1.5em;
    position: relative;
}

button.selector {
    position: relative;

    border-radius: 5px;
    border: var(--border-button) 1px solid;

    color: var(--col-primary);
    background: var(--bg-button);

    overflow: visible;

    padding: 1em;
    width: var(--project-button-width);

    transition: all var(--trans-out) ease-in-out;
    transition-property: border, color, background, transform;
}

.hovering:not(:hover, :active, :focus) {
    animation-name: glow;
    animation-duration: 2s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    animation-fill-mode: forwards;
}

button.selector:focus-visible {
    transition: filter 0s;
    outline: none;
    filter: drop-shadow(1px 1px var(--col-focus-outline))
        drop-shadow(-1px 1px var(--col-focus-outline))
        drop-shadow(1px -1px var(--col-focus-outline))
        drop-shadow(-1px -1px var(--col-focus-outline));
}

button.selector:hover, button.selector:focus, button.selector:active {
    border: var(--border-button-hover) 1px solid;
    background: transparent;

    transition: all var(--trans-in) ease-in-out;
    transition-property: border, color, background, transform;
}

button.selector:focus, button.selector:active {
    transform: translateX(5%);
}

#filterSource {
    position: absolute;
    width: 0;
    height: 0;
}

.selection-preview {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1em;

    height: fit-content;

    transition: all var(--trans-out) ease-in-out;
    transform: translateX(100%);
    opacity: 0;
}

#preview-placeholder-container
{
    position: relative;
    height: 0;
    width: 0;
}

#preview-placeholder
{
    position: absolute;
    top: 2em;
    left: 5em;
    width: calc(100vw - 10em - 2em - var(--project-button-width));
    max-width: calc(var(--content-max-width) - 10em - 2em - var(--project-button-width));
    text-align: center;
}

#projects-container:has(button:focus, #preview-container:focus-within) #preview-placeholder
{
    transition: all var(--trans-in) ease-in-out;
    transition-property: transform, opacity;
    transform: translateX(-10%);
    opacity: 0;
}

#projects-container:not(:has(button:focus, #previe-container:focus-within)) #preview-placeholder
{
    transition: all var(--trans-out) ease-in-out;
    transition-property: transform, opacity;
    transform: translateX(0);
    opacity: 1;
}

#projects-container:has(button.talespire:focus, #talespire-preview:focus-within) #talespire-preview,
#projects-container:has(button.kde:focus, #kde-preview:focus-within) #kde-preview,
#projects-container:has(button.tust:focus, #tust-preview:focus-within) #tust-preview,
#projects-container:has(button.website:focus, #website-preview:focus-within) #website-preview,
#projects-container:has(button.education:focus, #education-preview:focus-within) #education-preview
{
    transition: all var(--trans-in) ease-in-out;
    transform: translateX(0);
    opacity: 1;
}

@keyframes glow {

}

@keyframes hover {
    0% {
        transform: translate(0, 0);
        filter: drop-shadow(2px 3px 1px black);
    }
    50% {
        transform: translate(-3px, -5px);
        filter: drop-shadow(4px 6px 2px black);
    }
    100% {
        transform: translate(0, 0);
        filter: drop-shadow(2px 3px 1px black);
    }
}