:root {
    /* Brand colors #FDFD0D 253 253 13 */
    --brand-rgb: 253 253 13 ;
    --brand: rgba(var(--brand-rgb) / 1.0);
    --brand-fade: rgba(var(--brand-rgb) / 0.7);
    --brand-subtle: rgba(var(--brand-rgb) / 0.3);
    /* Structural colors */
    --base2: rgba(252 252 255 / 1.0);
    --base1: rgba(15 15 15 / 1.0);
    --smoke: rgba(52 61 68 / 0.3);
    /* Sizes */
    --base-s: 1.2rem;
    --s2: calc(1.15 * var(--base-s));
    --s1: calc(1.0 * var(--base-s));
    --s0: calc(0.85 * var(--base-s));
    --s-1: calc(0.72 * var(--base-s));
    --s-2: calc(0.6 * var(--base-s));
    --gap: var(--s0);
    /* Typography */
    font-family: condensed, sans-serif;
    line-height: var(--base-s);
    font-size: var(--s0);
    color: var(--base1);
    font-style: normal;
    /* Animation */
    --bg-trans: calc(0.3ms * var(--bg-t, 800));
    --bg-ease: linear(0, 0.108, 0.328, 0.555, 0.742, 0.875, 0.959, 1.005, 1.024, 1.028, 1.025, 1.018, 1.012, 1.007, 1.003, 1.001, 1, 0.999, 0.999, 0.999, 1);
    transition: 
        transform 300ms ease-in-out, 
        font-size 300ms ease-in-out, 
        letter-spacing 300ms ease-in-out;
}

body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    text-rendering: optimizeLegibility;
    background-color: var(--base2);
}

main {
    width: 100vw;
    height: 100vh;
}

/*==============================

Splash animation...

===============================*/


body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -10;
    background-color: var(--smoke);
    mask: url("../../assets/img/logo4.svg") no-repeat;
    mask-size: auto calc(var(--bg-zoom, 3) * 30%);
    mask-position: var(--bg-x, 50%) var(--bg-y, 50%);
    transform: rotate(180deg);
    transition:
        mask-position var(--bg-trans) var(--bg-ease),
        mask-size var(--bg-trans) var(--bg-ease);
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -5;
    pointer-events: none;
    -webkit-backdrop-filter: blur(var(--bg-b, 40px));
    backdrop-filter: blur(var(--bg-b, 40px));
    transition: backdrop-filter var(--bg-trans) var(--bg-ease);
}


main::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background-color: var(--smoke);
    mask: url("../../assets/img/logo4.svg") no-repeat;
    mask-size: auto calc(var(--bg-zoom, 3) * 50%);
    mask-position: var(--bg-x, 50%) var(--bg-y, 50%);
    transition:
        mask-position var(--bg-trans) var(--bg-ease),
        mask-size var(--bg-trans) var(--bg-ease);
}

[data-contents="crt"] {
    --crt-overscan: 10%;
    position: fixed;
    top: calc(-1 * var(--crt-overscan));
    left: calc(-1 * var(--crt-overscan));
    width: calc(100% + 2 * var(--crt-overscan));
    height: calc(100% + 2 * var(--crt-overscan));
    max-width: none;
    z-index: 100;
    pointer-events: none;
    opacity: 0.17;
    mix-blend-mode: color-dodge;
}

[data-contents="crt"][data-gl] {
    background-image: none;
}

[data-contents="splash"] {
    --splash-angle: clamp(15deg, atan2(100dvh, 100dvw), 70deg);
    display: flex;
    flex-direction: column;
    gap: var(--s0);
    position: absolute;
    top: 50%; left: 50%;
    width: min(35rem, 95vw);
    /* width: min(35rem, calc(hypot(100dvw, 100dvh) * 0.8)); */
    text-align: center;
    align-content: center;
    transform: translate(-50%, -50%) perspective(30px) rotateZ(70deg) rotateY(3deg);
    transform: translate(-50%, -50%) perspective(30px) rotateZ(var(--splash-angle)) rotateY(3deg);
    transform-origin: center;
}

[data-contents="logo"] {
    position: relative;
    aspect-ratio: 11 / 1;
}

[data-contents="logo"]::before,
[data-contents="logo"]::after {
    content: "";
    position: absolute;
    inset: 0;
    background: center / contain no-repeat;
    transition: opacity 300ms ease-in-out, transform 120ms ease-in-out, filter 1200ms ease-in-out;
}

[data-contents="logo"]::before {
    background: var(--brand);
    mask: url("../../assets/img/logo4.svg") center / contain no-repeat;
}

[data-contents="logo"]::after {
    background: var(--base1);
    mask: url("../../assets/img/undone.svg") center / contain no-repeat;
    opacity: 0;
}

[data-contents="logo"]:hover::before {
    opacity: 0;
    filter: blur(20px);
}

[data-contents="logo"]:hover::after {
    opacity: 1;
}

/* touch screen splash logo animation */
@media (hover: none) and (pointer: coarse) and (prefers-reduced-motion: no-preference) {
    [data-contents="logo"]::before {
        animation: logo-out 12s ease-in-out infinite;
    }

    [data-contents="logo"]::after {
        animation: logo-in 12s ease-in-out infinite;
    }
}

@keyframes logo-out {
    0%, 40%  { opacity: 1; filter: blur(0); }
    50%, 90% { opacity: 0; filter: blur(20px); }
    100%     { opacity: 1; filter: blur(0); }
}

@keyframes logo-in {
    0%, 40%  { opacity: 0; }
    50%, 90% { opacity: 1; }
    100%     { opacity: 0; }
}

[data-contents="tagline"] {
    font-family: condensed, sans-serif;
    font-size: var(--s-1);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.6rem;
    text-indent: 0.6rem; /* offset letter spacing, font dependent */   
    vertical-align: middle;
    transform: rotateZ(-90deg);
}

/*==============================

Main site layout and styling...

===============================*/

header {
    top: 0;
}

footer {
    bottom: 0;
}


[data-contents="layout"] {
    text-transform: uppercase;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: var(--s0);
    width: 100%;
    min-height: calc(2 * var(--base-s));
    position: fixed;
    text-align: center;
    letter-spacing: 0.1rem;
    padding: var(--s-2);
    font-size: var(--s-2);
    z-index: 10;
} 

[data-contents="page"] {
    display: flex;
    flex-direction: row;
    gap: var(--s0);
    z-index: 10;
    width: min(35rem, 100vdh);
    margin: 0 auto;
}

[div-contents="hero-image"] {
    display: flex;
    flex-direction: row;
    align-content: center;
    margin: auto;
}

img {
    display: flex;
    width: 100%;
}

a {
    text-decoration: none; 
    color: var(--base1);
    background-color: transparent;
}		

a:hover {
    color: var(--base1);
    background-color: var(--brand);
}



/*==============================

Responsive quirks...

===============================*/

@media (width < 35rem) {
    :root {
         --base-s: 1.0rem;
    }    
}