@import url("https://fonts.googleapis.com/css2?family=Kode+Mono:wght@400..700&display=swap");

:root {
    --color-bg: #f5f5f5;
    --color-main: rgba(0, 0, 0, 0.9);
    --color-highlight2: #e8e8e8;
    --color-highlight3: rgb(from var(--color-main) r g b / 0.35);
    --font-size: 1em;
    --font-size-nav: 2em;
    --color-border: rgba(0, 0, 0, 0.12);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.08);
    --mode1: invert(1) saturate(5);
}

html.dark {
    --color-bg: #222;
    --color-main: #c8c8c8;
    --color-highlight2: #2a2a2a;
    --color-border: rgba(255, 255, 255, 0.12);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.35);
    --mode1: invert(0) saturate(5);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font: var(--font-size) "Kode Mono", sans-serif;
    color: var(--color-main);
    background: var(--color-bg);
    cursor: default;
    overflow: hidden;
    user-select: none;
}

a,
a:focus,
a:active,
button,
button:focus,
button:active {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

a {
    color: var(--color-main);
    text-decoration: none;
}

.skip-link {
    position: fixed;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    padding: 0.5em 1.2em;
    background: var(--color-main);
    color: var(--color-bg);
    border-radius: 0 0 6px 6px;
    font-size: 0.85em;
    letter-spacing: 0.05em;
    transition: top 0.15s ease;
    white-space: nowrap;
}

.skip-link:focus {
    top: 0;
}

/* background shimmer */
#shimmer-container {
    position: fixed;
    inset: 0;
    padding: 4px;
    z-index: -1;
    pointer-events: none;
    width: 100%;
    height: 60vh;
    filter: var(--mode1);
    mask-image: linear-gradient(to bottom, white 0%, transparent 60%);
    -webkit-mask-image: linear-gradient(to bottom, white 0%, transparent 60%);
}

#shimmer-canvas {
    display: block;
}

/* foreground ui */
header,
main,
footer {
    z-index: 1;
}

main {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding-bottom: 70px;
}

/* ── nav ── */
nav {
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 470px;
    font-size: var(--font-size-nav);
    line-height: 1.25;
    letter-spacing: -0.025em;
    transition: transform 0.15s ease;
}

nav ol {
    counter-reset: item;
    list-style: none;
    padding: 0;
    margin: 0;
}

nav ol>li {
    counter-increment: item;
    text-transform: uppercase;
    white-space: nowrap;
}

nav ol>li>a {
    display: block;
    padding: 0 8vw;
    border: 1px solid transparent;
    border-radius: 2px;
}

nav ol>li>a.nav-opener {
    cursor: pointer;
}

nav ol>li>a::before {
    content: counter(item) ". ";
    display: inline-block;
    width: 1em;
    text-align: right;
    margin-right: 1em;
    letter-spacing: 0.1em;
}

nav ol>li>a[aria-expanded]::after {
    content: '';
    display: inline-block;
    margin-left: 0.165em;
    margin-bottom: 0.2em;
    vertical-align: middle;
    width: 0;
    height: 0;
    border-top: 0.2em solid transparent;
    border-bottom: 0.2em solid transparent;
    border-left: 0.235em solid var(--color-highlight3);
    transition: transform 0.3s ease;
}

nav ol>li>a[aria-expanded]:active::after {
    border-left: 0.235em solid var(--color-highlight2);
}

nav ol>li>a[aria-expanded="true"]::after {
    transform: rotate(90deg);
}

nav ol>li>a:hover {
    background-color: var(--color-main);
    color: var(--color-bg);
}

nav ol>li>a:hover::after {
    opacity: 1;
    border-left-color: rgb(from var(--color-bg) r g b / 0.5);
}

nav ol>li>a.active {
    border-color: var(--color-highlight3);
}

nav ol>li>a:active {
    border-color: transparent;
}

nav ol>li>a.inactive {
    pointer-events: none;
    opacity: 0.35;
    border-color: transparent;
}

nav ol>li>a.enter {
    color: var(--color-bg);
    background: var(--color-main);
}

nav ol>li ul {
    padding: 0;
    margin: 0;
    list-style: none;
    max-height: 0;
    opacity: 0;
    transform: translateY(-10px);
    overflow: hidden;
    pointer-events: none;
    transition: max-height 0.4s ease, opacity 0.4s ease, transform 0.4s ease;
}

nav ol>li ul li a {
    padding: 0 calc(8vw + 2em);
    display: block;
    border: 1px solid transparent;
    border-radius: 2px;
}

html.tw-pending nav ol>li,
html.tw-pending footer p {
    visibility: hidden;
}

html:not(.first-line-typed) nav ol>li>a.active,
html:not(.first-line-typed) nav ol>li ul li a.active {
    border-color: transparent;
}

html.first-line-border-fade nav ol>li>a,
html.first-line-border-fade nav ol>li ul li a {
    transition: border-color 0.08s linear;
}

nav ol>li ul li a::before {
    content: "> ";
    opacity: 0.5;
}

nav ol>li ul li a:hover {
    background: var(--color-main);
    color: var(--color-bg);
}

nav ol>li ul li a.active {
    border-color: var(--color-highlight3);
}

nav ol>li ul li a.enter {
    background: var(--color-main);
    color: var(--color-bg);
}

nav ol>li ul li a.inactive {
    pointer-events: none;
    opacity: 0.25;
    border-color: transparent;
}

nav ol>li>a[aria-expanded="true"]+ul,
nav ol>li ul.visible {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}


/* footer */
footer {
    position: fixed;
    width: 100%;
    bottom: 15px;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 68px;
    z-index: 1;
}

footer p {
    letter-spacing: 0.35em;
    margin-left: 0.35em;
    text-align: center;
}

.cookie-banner {
    position: fixed;
    right: 15px;
    bottom: 15px;
    z-index: 201;
    max-width: min(360px, calc(100vw - 32px));
    background-color: var(--color-highlight2);
    color: var(--color-main);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    transform: translateY(calc(100% + 30px));
    transition: transform 1.5s cubic-bezier(0.22, 1, 0.36, 1),
        color 0.3s ease, background-color 0.3s ease,
        border-color 0.3s ease, box-shadow 0.3s ease;
}

.cookie-banner.visible {
    transform: translateY(0);
    transition-delay: 3.5s;
}

.cookie-banner.slide-out {
    transform: translateY(calc(100% + 30px));
    transition-timing-function: cubic-bezier(0.55, 0, 1, 0.45);
    transition-duration: 0.35s;
    transition-delay: 0s;
}

.cookie-banner-top {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.cookie-banner-top p {
    margin: 0;
    line-height: 1.45;
    flex: 1;
}

.cookie-banner p {
    margin: 0;
    line-height: 1.45;
}

.cookie-banner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cookie-banner button {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
    min-height: 36px;
    margin-left: -4px;
    padding: 0.35em 0.75em;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-bg);
    color: var(--color-main);
    font: inherit;
    cursor: pointer;
}

.cookie-count {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-top: 4px;
    transform: rotate(-90deg);
}

.cookie-count-track {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 2.5;
}

.cookie-count-fill {
    fill: none;
    stroke: var(--color-main);
    stroke-width: 2.5;
    stroke-dasharray: 50.27;
    stroke-dashoffset: 0;
    stroke-linecap: round;
    opacity: 0.55;
}

.cookie-count-fill.running {
    animation: cookie-count-drain 7s linear forwards;
}

@keyframes cookie-count-drain {
    from {
        stroke-dashoffset: 0;
    }

    to {
        stroke-dashoffset: 50.27;
    }
}

@media (max-width: 768px) {
    footer {
        height: 52px;
    }
}

@media (max-width: 640px) {
    nav {
        min-width: 0;
        width: 100%;
    }

    nav ol>li>a.active,
    nav ol>li ul li a.active {
        border-color: transparent;
    }

    nav a:hover {
        color: inherit !important;
        background-color: transparent !important;
    }

    nav a:active {
        background-color: var(--color-main) !important;
        color: var(--color-bg) !important;
        box-shadow: 0 0 2px var(--color-main);
        transition: 0.15s;
    }

    nav ol>li>a[aria-expanded]::after {
        border-left: 0.235em solid var(--color-highlight3) !important;
    }

    nav ol>li>a[aria-expanded]:active::after {
        border-left-color: var(--color-highlight2) !important;
    }
}

@media (max-width: 392px) {

    footer,
    .cookie-banner {
        display: none;
    }
}