/**
 * Page-specific layout: the landing sections, the documentation shell and the
 * download page.
 */

/* =============================================================== landing */

.hero {
    position: relative;
    padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 7vw, 5rem);
    text-align: center;
}

.hero__inner {
    display: grid;
    justify-items: center;
    gap: 1.5rem;
}

.hero__mark {
    position: relative;
    display: grid;
    place-items: center;
}

.hero__mark .logo-mark {
    width: clamp(5.5rem, 16vw, 9rem);
    height: clamp(5.5rem, 16vw, 9rem);
    filter: drop-shadow(0 18px 40px rgba(124, 58, 237, 0.45));
}

/* Centred headings get a matching rule on the other side, since a single
   leading one reads as off-centre. */
.hero .eyebrow::after,
.shots-section .eyebrow::after,
.dl-hero .eyebrow::after,
.section-heading--center .eyebrow::after {
    content: '';
    width: 1.6rem;
    height: 1px;
    background: linear-gradient(90deg, var(--brand-400), transparent);
}

/* A soft halo behind the mark, breathing slowly. */
.hero__mark::before {
    content: '';
    position: absolute;
    width: 18rem;
    height: 18rem;
    border-radius: 9999px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.35), transparent 65%);
    animation: hero-breathe 7s ease-in-out infinite;
    z-index: -1;
}

@keyframes hero-breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.85;
    }
    50% {
        transform: scale(1.12);
        opacity: 1;
    }
}

.hero__title {
    font-size: clamp(3.25rem, 13vw, 7rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin: 0;
}

.hero__tagline {
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 2.8vw, 1.65rem);
    font-weight: 500;
    color: var(--ink-200);
    letter-spacing: -0.01em;
}

.hero__lead {
    max-width: 44rem;
    color: var(--ink-300);
    font-size: clamp(1rem, 1.7vw, 1.12rem);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.hero__badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* ---------------------------------------------------------------- intro */

.intro__grid {
    display: grid;
    gap: 2.5rem;
}

.intro__text p + p {
    margin-top: 1rem;
}

.intro__highlights {
    display: grid;
    gap: 1rem;
}

.intro__card {
    display: grid;
    gap: 0.85rem;
    padding: 1.4rem;
}

.intro__card h3 {
    margin: 0;
    font-size: 1.05rem;
}

.intro__card p {
    color: var(--ink-300);
    font-size: 0.92rem;
}

@media (min-width: 62rem) {
    .intro__grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        gap: 4rem;
        align-items: start;
    }

    .intro__highlights {
        gap: 1rem;
    }
}

/* -------------------------------------------------------------- features */

.features {
    display: grid;
    gap: 1.25rem;
}

.feature {
    display: grid;
    gap: 1.75rem;
    padding: clamp(1.4rem, 3vw, 2.25rem);
}

.feature__head {
    display: grid;
    gap: 1rem;
    align-content: start;
}

.feature__title {
    margin: 0;
    font-size: clamp(1.3rem, 2.4vw, 1.6rem);
}

.feature__lead {
    color: var(--ink-300);
    font-size: 0.95rem;
}

.feature__index {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--ink-500);
}

.feature__groups {
    display: grid;
    gap: 1.5rem;
}

.feature__group-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.85rem;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-300);
}

.feature__group-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.35), transparent);
}

@media (min-width: 62rem) {
    .feature {
        grid-template-columns: minmax(0, 17rem) minmax(0, 1fr);
        gap: 3rem;
    }

    .feature__head {
        position: sticky;
        top: calc(var(--header-height) + 2rem);
    }

    /* Two columns of bullets once a list gets long. */
    .feature__body--split > .tick-list {
        columns: 2;
        column-gap: 2.5rem;
    }

    .feature__body--split > .tick-list li {
        break-inside: avoid;
    }

    /* Columns rather than a grid: grid rows align, which left a gap under
       every group shorter than the one beside it. */
    .feature__groups {
        display: block;
        columns: 2;
        column-gap: 2.5rem;
    }

    .feature__groups > section {
        break-inside: avoid;
    }

    .feature__groups > section + section {
        margin-top: 1.75rem;
    }
}

/* ------------------------------------------------------------ screenshots */

.shots-section .section-heading {
    margin-inline: auto;
    text-align: center;
    justify-items: center;
}

/* ------------------------------------------------------------------- cta */

.cta {
    display: grid;
    gap: 1.5rem;
    justify-items: center;
    padding: clamp(2rem, 5vw, 3.5rem);
    text-align: center;
    background:
        radial-gradient(40rem 20rem at 50% -20%, rgba(124, 58, 237, 0.25), transparent 70%),
        var(--gradient-glass);
}

.cta h2 {
    margin: 0;
}

.cta p {
    max-width: 38rem;
    color: var(--ink-300);
}

.cta__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

/* ========================================================= documentation */

.doc-hero {
    padding-block: clamp(2.5rem, 6vw, 4rem) 0;
}

.doc-hero__inner {
    display: grid;
    gap: 1rem;
    max-width: 48rem;
}

.doc-layout {
    display: grid;
    gap: 2.5rem;
    padding-block: clamp(2rem, 5vw, 3.5rem);
    max-width: var(--shell-wide);
}

.doc-toc {
    align-self: start;
}

.doc-toc__inner {
    padding: 1.25rem;
}

.doc-toc__title {
    font-family: var(--font-display);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-400);
    margin-bottom: 0.85rem;
}

.doc-toc__list {
    display: grid;
    gap: 0.15rem;
}

.doc-toc__link {
    display: block;
    padding: 0.4rem 0.6rem;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--ink-300);
    font-size: 0.88rem;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.doc-toc__link:hover {
    background: rgba(34, 31, 51, 0.6);
    color: var(--ink-50);
}

.doc-toc__link.is-active {
    border-left-color: var(--brand-500);
    background: rgba(124, 58, 237, 0.14);
    color: var(--ink-50);
    font-weight: 500;
}

.doc-body {
    display: grid;
    gap: clamp(2.5rem, 5vw, 3.5rem);
    min-width: 0;
}

.doc-section {
    display: grid;
    gap: 1.1rem;
    scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

.doc-section__title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.doc-section__anchor {
    color: var(--ink-600);
    font-size: 0.8em;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease;
}

.doc-section__title:hover .doc-section__anchor {
    opacity: 1;
}

.doc-section__anchor:hover {
    color: var(--brand-400);
}

.doc-section h3 {
    margin-top: 0.75rem;
    color: var(--ink-100);
}

.doc-section > p {
    color: var(--ink-200);
}

@media (min-width: 64rem) {
    .doc-layout {
        grid-template-columns: 16rem minmax(0, 1fr);
        gap: 3.5rem;
    }

    .doc-toc {
        position: sticky;
        top: calc(var(--header-height) + 1.5rem);
        max-height: calc(100vh - var(--header-height) - 3rem);
        overflow-y: auto;
    }
}

/* ============================================================== download */

.dl-hero {
    padding-block: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 4vw, 2.5rem);
    text-align: center;
}

.dl-hero__inner {
    display: grid;
    justify-items: center;
    gap: 1rem;
    max-width: 42rem;
    margin-inline: auto;
}

.dl-card {
    display: grid;
    gap: 1.25rem;
    justify-items: center;
    padding: clamp(1.75rem, 4vw, 3rem);
    text-align: center;
    background:
        radial-gradient(35rem 18rem at 50% -30%, rgba(124, 58, 237, 0.28), transparent 70%),
        var(--gradient-glass);
}

.dl-card__icon {
    color: var(--brand-300);
}

.dl-card__icon .icon {
    width: 2.5rem;
    height: 2.5rem;
}

.dl-card h2 {
    margin: 0;
    font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.dl-card p {
    max-width: 40rem;
    color: var(--ink-300);
}

.dl-card__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.dl-card__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem 1.25rem;
    padding-top: 1.25rem;
    margin-top: 0.25rem;
    border-top: 1px solid var(--line);
    width: 100%;
    font-size: 0.85rem;
    color: var(--ink-400);
}

.dl-steps {
    display: grid;
    gap: 1rem;
    counter-reset: dl-step;
}

.dl-step {
    display: grid;
    gap: 0.9rem;
    padding: 1.4rem;
}

.dl-step__head {
    display: grid;
    grid-template-columns: 2.25rem 1fr;
    gap: 0.9rem;
    align-items: center;
}

.dl-step__number {
    counter-increment: dl-step;
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    background: var(--gradient-brand);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
}

.dl-step__number::before {
    content: counter(dl-step);
}

.dl-step h3 {
    margin: 0;
    font-size: 1.05rem;
}

.dl-step p {
    color: var(--ink-300);
    font-size: 0.93rem;
}

.dl-reqs {
    display: grid;
    gap: 1rem;
}

.dl-req {
    display: grid;
    grid-template-columns: 3rem 1fr;
    gap: 1rem;
    align-items: start;
    padding: 1.25rem;
}

.dl-req h3 {
    margin: 0 0 0.3rem;
    font-size: 1rem;
}

.dl-req p {
    color: var(--ink-300);
    font-size: 0.9rem;
}

.dl-req__link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.5rem;
    font-size: 0.83rem;
    font-weight: 600;
}

.dl-req__link .icon {
    width: 0.9rem;
    height: 0.9rem;
}

@media (min-width: 48rem) {
    .dl-reqs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 62rem) {
    .dl-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}