/* ==========================================================
   CUBE CSS
   C — Composition
   U — Utilities
   B — Blocks
   E — Exceptions
   ========================================================== */

:root {
    --intro-space-xs: clamp(0.5rem, 0.45rem + 0.25vw, 0.75rem);
    --intro-space-s: clamp(0.75rem, 0.65rem + 0.5vw, 1.25rem);
    --intro-space-m: clamp(1.25rem, 1rem + 1.25vw, 2.5rem);
    --intro-space-l: clamp(2rem, 1.4rem + 3vw, 5rem);
    --intro-wrapper: 88rem;
    --intro-gutter: clamp(1rem, 0.5rem + 2.5vw, 3rem);
    --intro-surface: #111;
    --intro-text: #fff;
    --scrollbar-width: 0px;
}

/* ==========================================================
   C — COMPOSITION
   ========================================================== */

.intro-wrapper {
    width: min(100% - (2 * var(--intro-gutter)), var(--intro-wrapper));
    margin-inline: auto;
}

.flow > * + * {
    margin-block-start: var(--flow-space, var(--intro-space-s));
}

.cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--cluster-space, var(--intro-space-s));
}

/* ==========================================================
   U — UTILITIES
   ========================================================== */

.u-visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.color-black {
    color: #000 !important;
}

.intro[aria-hidden='true'] {
    visibility: hidden;
}

/* ==========================================================
   B — BLOCKS
   ========================================================== */

.intro {
    position: relative;
    z-index: 1;
    width: calc(100vw - var(--scrollbar-width));
    max-width: none;
    margin-left: calc(
        50% - (100vw - var(--scrollbar-width)) / 2
    );
    margin-right: calc(
        50% - (100vw - var(--scrollbar-width)) / 2
    );
    height: 100svh;
    min-height: 38rem;
    color: var(--intro-text);
    background: var(--intro-surface);
    isolation: isolate;
}

.intro__slides {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    background: var(--intro-surface);
}

.intro-slide {
    position: absolute;
    inset: 0;
    display: grid;
    align-items: center;
    overflow: hidden;
    background-image: var(--intro-bg-mobile, var(--intro-bg-desktop));
    background-position: center;
    background-size: cover;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.025);
    will-change: opacity, transform;
}


.intro-slide__veil {
    position: absolute;
    z-index: -1;
    inset: 0;
    background: rgba(0 0 0 / 0.5);
    opacity: 0;
    will-change: opacity;
}

.intro-slide__inner {
    --flow-space: var(--intro-space-m);
    position: relative;
    padding-block: var(--intro-space-l);
}

.intro-reveal {
    overflow: hidden;
}

.intro-reveal__inner,
[data-intro-reveal] {
    will-change: transform, opacity;
}

.intro-slide__title {
    margin: 0;
    color: inherit;
    font-family: 'InriaSerif', serif;
    font-size: 1.5rem;
    font-weight: 400;
    line-height: normal;
}

.intro-slide__title__alt {
    margin: 0;
    color: inherit;
    font-family: 'ImperialScript', serif;
    font-size: 3rem;
    font-weight: 400;
    line-height: 1;
}

.intro-slide__text {
    max-width: 52ch;
    margin-inline: 0;
    font-family: 'InriaSerif', serif;
    font-size: 1rem;
    line-height: normal;
}

.intro-slide__layout {
    --cluster-space: var(--intro-space-l);
    justify-content: space-between;
}

.intro-slide__copy {
    flex: 1 1 28rem;
}

.intro-slide--centered {
    text-align: center;
}

.intro-slide--centered .intro-slide__title,
.intro-slide--centered .intro-slide__text {
    margin-inline: auto;
}

.intro__controls {
    position: absolute;
    z-index: 20;
    right: 0;
    bottom: max(1rem, env(safe-area-inset-bottom));
    left: 0;
    justify-content: center;
    pointer-events: none;
}

.intro__progress {
    position: absolute;
    left: 0;
    margin: 0;
    font-variant-numeric: tabular-nums;
    pointer-events: auto;
}

.intro__actions {
    justify-content: center;
    pointer-events: auto;
}

.intro__skip {
    padding: 0.75rem 1rem;
    border: 0;
    color: inherit;
    background: transparent;
    font: inherit;
    text-decoration: underline;
    text-underline-offset: 0.25em;
    cursor: pointer;
}

.intro__skip:focus-visible {
    outline: 3px solid currentColor;
    outline-offset: 0.3rem;
}

/* ==========================================================
   E — EXCEPTIONS
   ========================================================== */

@media (min-width: 48rem) {
    .intro-slide {
        background-image: var(--intro-bg-desktop);
    }
}

@media (max-width: 47.999rem) {
    .intro-slide__veil {
        background: linear-gradient(0deg, rgb(0 0 0 / 0.75), rgb(0 0 0 / 0.2));
    }

    .intro-slide__layout {
        align-content: center;
    }

    .intro-slide__media {
        max-width: 15rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .intro-slide,
    .intro-reveal__inner,
    [data-intro-reveal] {
        will-change: auto;
    }
}

@media (max-width: 1023px) {
    .intro {
        display: none;
    }
}