@font-face {
    font-family: 'fantasque';
    src: url('/fonts/fantasque.woff');
}

:root {
    --content-padding: 2rem;
    --border-radius: 10px;

    --font: 'fantasque';
    --font-fallback: monospace;
}

/* <global> */
* {
    color: var(--foreground);
    font-family: var(--font), var(--font-fallback);

    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
/* </global> */

/* <layout> */
html {
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: var(--content-padding);

    background-image: url('/img/background.jpg');
    background-repeat: repeat;
}

body {
    display: grid;
    grid-template-rows: auto 1fr auto;

    padding: var(--content-padding);
    padding-left: auto;
    border-radius: var(--border-radius);
    min-height: calc(100vh - 2 * var(--content-padding));

    width: 100%;
    max-width: 1200px;
    background-color: var(--background-body);
    backdrop-filter: blur(16px);
}

main {
    height: 100%;
    overflow-y: scroll;
}
/* </layout> */

/* <typography> */
h1 {
    font-size: 3rem;
}
h2 {
    font-size: 2rem;
}
h3 {
    font-size: 1.45rem;
}
hr {
    margin: 1rem;
    border: 0;
    height: 1px;
    background-image: linear-gradient(
        to right,
        rgba(0, 0, 0, 0.1),
        var(--foreground),
        rgba(0, 0, 0, 0.1)
    );
}
a {
    color: var(--regular6);
}
/* </typography> */

/* <footer> */
.blinkies {
    display: flex;
    justify-content: left;
    flex-wrap: wrap;
    gap: 10px 10px;
}
/* </footer> */

/* <form> */
textarea {
    height: 30rem;
    border: 3px solid var(--regular3);
    padding: 1rem;
    border-radius: 4px;
    background: none;
    resize: vertical;
    font-family: var(--font), var(--font-fallback);
    font-size: 1.5rem;
    line-height: 1;
    white-space: pre;
    font-feature-settings:
        'tnum',
        'kern' 0;
    font-variant-numeric: tabular-nums;
}
*:focus {
    border-color: var(--regular6);
    outline: none;
    transition: border-color 0.5s;
}
/* </form> */

/* <visibility> */
.maybe-visible {
    transition: opacity 0.5s;
}

.visible {
    opacity: 1;
}

.invisible {
    opacity: 0;
}
/* </visibility> */

/* <buttons> */
button {
    background: none;
    display: block;
    border: 3px solid var(--regular3);
    border-radius: 4px;
    width: 100%;
    padding: 8px;
}
button:hover {
    border: 3px solid var(--regular6);
    transition: border-color 0.2s ease-in-out;
}
button:disabled,
button[disabled] {
}
/* </buttons> */

/* <grid> */
.grid {
    border: 3px solid var(--regular4);
    padding: 1rem;
    background-color: var(--background);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
    white-space: pre;
    border-radius: 4px;
    overflow-x: auto;
    font-feature-settings:
        'tnum',
        'kern' 0;
    font-variant-numeric: tabular-nums;
}

.grid-row {
    display: flex;
}

.grid-cell {
    display: inline-block;
    min-width: 1ch;
    width: 1ch;
    max-width: 1ch;
    text-align: center;
    overflow: hidden;
    vertical-align: top;
    transition: background-color 0.1s ease-in-out;
    box-sizing: border-box;
    white-space: nowrap;
}

.highlightable:hover {
    background-color: var(--background-body);
}
/* </grid> */

/* <toolbar> */
.toolbar {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem;
    background-color: var(--background);
    border: 3px solid var(--regular4);
    border-radius: 4px;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    width: fit-content;
}

.toolbar-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border: 2px solid var(--regular3);
    border-radius: 4px;
    background: none;
    cursor: pointer;
    transition: border-color 0.2s ease-in-out;
    min-width: 2.5rem;
    min-height: 2.5rem;
}

.toolbar-item:hover:not(.disabled) {
    border-color: var(--regular6);
}

.toolbar-item.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: var(--bright0);
}

.toolbar-item-content {
    display: flex;
    align-items: center;
    justify-content: center;
}

.toolbar-item-content-panel {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background-color: var(--background);
    border: 2px solid var(--regular6);
    border-radius: 4px;
    z-index: 1000;
    animation: fadeIn 0.2s ease-in-out;
}

.toolbar-item-content-panel.fading {
    animation: fadeOut 0.2s ease-in-out;
}

.toolbar-item-content-panel::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 0.375rem solid transparent;
    border-bottom-color: var(--regular6);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-0.25rem);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-0.25rem);
    }
}
/* </toolbar> */