* {
    /* brand foundation */
    --brand-hue: 200;
    --brand-saturation: 100%;
    --brand-lightness: 50%;
    --navbar-height: 2.5em;

    /* light */
    --brand-light: hsl(var(--brand-hue) var(--brand-saturation) var(--brand-lightness));
    --text1-light: hsl(var(--brand-hue) var(--brand-saturation) 10%);
    --text2-light: hsl(var(--brand-hue) 30% 30%);
    --surface1-light: hsl(var(--brand-hue) 25% 90%);
    --surface2-light: hsl(var(--brand-hue) 20% 99%);
    --surface3-light: hsl(var(--brand-hue) 20% 92%);
    --surface4-light: hsl(var(--brand-hue) 20% 85%);
    --surface-shadow-light: var(--brand-hue) 10% 20%;
    --shadow-strength-light: .02;

    /* dark */
    --brand-dark: hsl(var(--brand-hue) calc(var(--brand-saturation) / 2) calc(var(--brand-lightness) / 1.5));
    --text1-dark: hsl(var(--brand-hue) 15% 85%);
    --text2-dark: hsl(var(--brand-hue) 5% 65%);
    --surface1-dark: hsl(var(--brand-hue) 10% 10%);
    --surface2-dark: hsl(var(--brand-hue) 10% 15%);
    --surface3-dark: hsl(var(--brand-hue) 5% 20%);
    --surface4-dark: hsl(var(--brand-hue) 5% 25%);
    --surface-shadow-dark: var(--brand-hue) 50% 3%;
    --shadow-strength-dark: .8;

    /* dim */
    --brand-dim: hsl(var(--brand-hue) calc(var(--brand-saturation) / 1.25) calc(var(--brand-lightness) / 1.25));
    --text1-dim: hsl(var(--brand-hue) 15% 75%);
    --text2-dim: hsl(var(--brand-hue) 10% 61%);
    --surface1-dim: hsl(var(--brand-hue) 10% 20%);
    --surface2-dim: hsl(var(--brand-hue) 10% 25%);
    --surface3-dim: hsl(var(--brand-hue) 5% 30%);
    --surface4-dim: hsl(var(--brand-hue) 5% 35%);
    --surface-shadow-dim: var(--brand-hue) 30% 13%;
    --shadow-strength-dim: .2;
}

:root {
    --max-width: 1100px;
    --border-radius: 12px;
    --font-mono: ui-monospace, Menlo, Monaco, 'Cascadia Mono', 'Segoe UI Mono',
        'Roboto Mono', 'Oxygen Mono', 'Ubuntu Monospace', 'Source Code Pro',
        'Fira Mono', 'Droid Sans Mono', 'Courier New', monospace;

    color-scheme: light;

    /* set defaults */
    --brand: var(--brand-light);
    --text1: var(--text1-light);
    --text2: var(--text2-light);
    --surface1: var(--surface1-light);
    --surface2: var(--surface2-light);
    --surface3: var(--surface3-light);
    --surface4: var(--surface4-light);
    --surface-shadow: var(--surface-shadow-light);
    --shadow-strength: var(--shadow-strength-light);
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;

        --brand: var(--brand-dark);
        --text1: var(--text1-dark);
        --text2: var(--text2-dark);
        --surface1: var(--surface1-dark);
        --surface2: var(--surface2-dark);
        --surface3: var(--surface3-dark);
        --surface4: var(--surface4-dark);
        --surface-shadow: var(--surface-shadow-dark);
        --shadow-strength: var(--shadow-strength-dark);
    }
}

[data-theme="light"] {
    color-scheme: light;

    --brand: var(--brand-light);
    --text1: var(--text1-light);
    --text2: var(--text2-light);
    --surface1: var(--surface1-light);
    --surface2: var(--surface2-light);
    --surface3: var(--surface3-light);
    --surface4: var(--surface4-light);
    --surface-shadow: var(--surface-shadow-light);
    --shadow-strength: var(--shadow-strength-light);
}

[data-theme="dark"] {
    color-scheme: dark;

    --brand: var(--brand-dark);
    --text1: var(--text1-dark);
    --text2: var(--text2-dark);
    --surface1: var(--surface1-dark);
    --surface2: var(--surface2-dark);
    --surface3: var(--surface3-dark);
    --surface4: var(--surface4-dark);
    --surface-shadow: var(--surface-shadow-dark);
    --shadow-strength: var(--shadow-strength-dark);
}

[data-theme="dim"] {
    color-scheme: dark;

    --brand: var(--brand-dim);
    --text1: var(--text1-dim);
    --text2: var(--text2-dim);
    --surface1: var(--surface1-dim);
    --surface2: var(--surface2-dim);
    --surface3: var(--surface3-dim);
    --surface4: var(--surface4-dim);
    --surface-shadow: var(--surface-shadow-dim);
    --shadow-strength: var(--shadow-strength-dim);
}

html {
    block-size: 100%;
    background-color: var(--surface1);
    transition: background-color .2s ease-in-out;
    color: var(--text1);
}

body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100dvw;
    overflow-y: scroll;
    position: relative;
}

#main {
    height: 100%;
    border: 1px solid lightgray;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 2em auto;
    gap: .15em;
}


.main-body {
    background-color: var(--surface2);
    border-radius: 2px;
    overflow-y: scroll;

    button {
        height: 3em;
        width: 10em;
    }
}


header {
    display: inline-grid;
    gap: 1ch;
}

.rad_shadow {
    border: 1px solid hsl(var(--brand-hue) 10% 50% / 15%);
    /*box-shadow: 0 1rem .5rem -.5rem;*/
    box-shadow:
        0 0 2.2px hsl(var(--surface-shadow) / calc(var(--shadow-strength) + .03)),
        0 6.7px 5.3px hsl(var(--surface-shadow) / calc(var(--shadow-strength) + .01)),
        0 10.5px 10px hsl(var(--surface-shadow) / calc(var(--shadow-strength) + .02)),
        0 22.3px 17.9px hsl(var(--surface-shadow) / calc(var(--shadow-strength) + .02)),
        0 4.8px 23.4px hsl(var(--surface-shadow) / calc(var(--shadow-strength) + .03)),
        0 10px 90px hsl(var(--surface-shadow) / var(--shadow-strength));
}

li {
    list-style: none;

    .attribute {
        p {
            font-size: .8rem;
        }
    }
}


ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    padding: 0;
}

ul li::marker {
    font-size: 1.5em;
}


#theme__toggle {
    cursor:pointer;
    background: 0;
    border: 0;
    opacity: 0.6;
    padding: 0.35em;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    position: relative;
    isolation: isolate;
}

#theme__toggle::after {
    content: attr(aria-label);
    position: absolute;
    background: var(--surface4);
    font-size: small;
    width: max-content;
    left: -4em;
    right: 0;
    top : 99%;
    margin: 0 auto;
    padding: 0.4em 0.85em;
    border-radius: 5px;
    opacity: 0;
    transform: scale(0);
    transform-origin: top;
    transition: transform 0ms linear 100ms,  opacity 70ms linear;

}

.button:active::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--surface3);
    border-radius: inherit;
    transform: scale(0);
    opacity: 0;
    z-index: -1;
}

.button:active::before {
    animation: pulse 990ms linear;
}


.toggle__circle,
.toggle__sun {
    fill: var(--text1);
}


.toggle__circle[theme-state="light"] {
    transform: translate(-15%);
    fill: var(--text1);
}

.toggle__circle {
    transition: transform 500ms ease-out;
}

.toggle__sun {

    transform-origin: center;
    transition: transform 750ms cubic-bezier(.29,.56,.68,1.18);
}

.toggle__sun[theme-state="light"] {
    transform: rotate(0.75turn);
    fill: var(--text1);
}


#theme__toggle:hover,
#theme__toggle:focus-visible, 
#theme__toggle:active {
    background: var(--surface2);
    outline: 0 ;
    box-shadow: none;
    opacity: 1;
    transition: transform 300ms linear, opacity 70ms linear;
}

#theme__toggle:hover::after,
#theme__toggle:focus-visible::after {
    opacity: 0.7;
    transform: scale(1);
}


@keyframes pulse {
    0% {
        transform: scale(0);
        opacity: .5;
    }
    10% {
       transform: scale(1); 
    }
    75% {
        opacity: 1;
    }
    100% {
        opacity : 0;
        transform: scale(1); 
    }
}