/* Kinetic Ellipse — case study */

.ellipse-story {
    --accent: #c70039;
    --ink: #0a0a0a;
    --mist: rgba(245, 245, 245, .08);
    --steel: #9aa3ad;
    --type-kicker: 12px;
    --type-body: 16px;
    --type-caption: 12px;
    --type-title: clamp(28px, 4vw, 40px);
    --type-display: clamp(32px, 4.5vw, 48px);
    --lh-body: 1.7;
    background:
        radial-gradient(900px 520px at 12% 10%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 58%),
        radial-gradient(720px 440px at 90% 30%, rgba(180, 160, 120, .05), transparent 55%),
        #101010;
}

.ellipse-main.case-study {
    max-width: 1180px;
    margin: 0 auto;
    padding: 110px 24px 80px;
    position: relative;
    z-index: 1;
    overflow-x: hidden;
}

.ellipse-story #case-chrome-top { position: relative; z-index: 70; }

.ellipse-dock {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 18px;
    pointer-events: none;
}

.ellipse-dock > * { pointer-events: auto; }

.ellipse-story .color-changer {
    position: relative;
    right: -150px;
    top: auto;
    z-index: 2;
    transition: right .4s ease;
}

.ellipse-story .color-changer-active { right: 0; }

.ellipse-rail {
    position: relative;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ellipse-rail a {
    display: grid;
    grid-template-columns: 26px 1fr;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: rgba(245, 245, 245, .4);
    font-family: poppins;
    font-size: 10px;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    transition: color .3s ease;
}

.ellipse-rail a i {
    width: 26px;
    height: 26px;
    border: 1px solid rgba(245, 245, 245, .18);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-style: normal;
    font-size: 9px;
}

.ellipse-rail a span {
    opacity: 0;
    transform: translateX(6px);
    transition: opacity .25s ease, transform .25s ease;
    white-space: nowrap;
}

.ellipse-rail:hover a span,
.ellipse-rail a.is-active span {
    opacity: 1;
    transform: translateX(0);
}

.ellipse-rail a.is-active,
.ellipse-rail a:hover { color: whitesmoke; }

.ellipse-rail a.is-active i {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.ellipse-story .chapter {
    position: relative;
    margin: 88px 0 0;
    padding-top: 8px;
}

.ellipse-story .chapter-index {
    position: static;
    display: block;
    left: auto;
    top: auto;
    font-family: poppins;
    font-size: clamp(56px, 9vw, 96px);
    font-weight: 700;
    line-height: .9;
    letter-spacing: -4px;
    color: rgba(245, 245, 245, .14);
    pointer-events: none;
    user-select: none;
    margin: 0 0 8px;
}

.ellipse-story .chapter-head,
.ellipse-story .chapter-prose,
.ellipse-story .ellipse-split,
.ellipse-story .iter-stack,
.ellipse-story .ellipse-finale {
    position: relative;
    z-index: 1;
}

.ellipse-story .chapter-head { margin: 0 0 28px; max-width: 720px; }

.ellipse-story .season-kicker,
.ellipse-story .case-kicker {
    font-family: poppins;
    font-size: var(--type-kicker);
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 10px;
}

.ellipse-story .case-hero h1,
.ellipse-story .chapter-head h2 {
    font-family: poppins;
    font-size: var(--type-title);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin: 0;
    color: whitesmoke;
}

.iter-title {
    font-family: poppins;
    font-size: var(--type-kicker);
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    margin: 0;
    color: var(--accent);
}

.iter-title .color {
    color: var(--accent);
}

.ellipse-story .case-hero h1 {
    font-size: var(--type-display);
    font-weight: 700;
    margin-bottom: 12px;
}

.ellipse-story .chapter-prose {
    max-width: 62ch;
}

.ellipse-story .ellipse-prose-wide,
.ellipse-story #reflection .chapter-prose,
.ellipse-story #motion .chapter-prose {
    max-width: none;
}

.ellipse-story .chapter-prose p,
.ellipse-story .chapter-prose .lead,
.ellipse-story .case-subtitle,
.ellipse-story .case-role,
.iter-copy p,
.iter-outcome {
    font-family: poppins;
    font-size: var(--type-body);
    font-weight: 400;
    line-height: var(--lh-body);
    letter-spacing: 0;
    text-transform: none;
}

.ellipse-story .chapter-prose p,
.ellipse-story .chapter-prose .lead {
    opacity: .88;
    margin: 0 0 14px;
}

.ellipse-story .case-subtitle {
    opacity: .78;
    margin: 0 0 18px;
}

.ellipse-story .case-role {
    opacity: .55;
    margin-top: 18px;
}


.ellipse-story .beat {
    opacity: .95 !important;
    margin: 18px 0;
}

.ellipse-story .chapter-prose strong,
.iter-outcome strong {
    color: whitesmoke;
    font-weight: 600;
}

.ellipse-story .chapter-prose a,
.ellipse-credit a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
    text-underline-offset: 3px;
}

.ellipse-story .chapter-prose a:hover,
.ellipse-credit a:hover {
    text-decoration-color: var(--accent);
}

.ellipse-story .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .7s ease, transform .7s ease;
}

.ellipse-story .reveal.is-in {
    opacity: 1;
    transform: none;
}

.ellipse-story .case-hero {
    display: grid;
    grid-template-columns: 1.15fr .95fr;
    gap: 40px;
    align-items: center;
    min-height: min(72vh, 680px);
}

.ellipse-story .case-hero-visual {
    margin: 0;
    border: 1px solid var(--mist);
    background: #f2efe8;
    overflow: hidden;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ellipse-story .case-hero-visual video,
.ellipse-story .case-hero-visual img {
    width: 100%;
    height: auto;
    max-height: min(620px, 70vh);
    object-fit: contain;
    display: block;
    background: #f2efe8;
}


.ellipse-story .case-pager {
    max-width: none;
    margin: 48px 0 0;
    padding: 0;
}

.ellipse-split {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 40px;
    align-items: start;
}

.ellipse-split .chapter-prose {
    max-width: none;
    margin: 0;
}

.ellipse-editorial {
    display: grid;
    gap: 18px;
}

.ellipse-editorial figure {
    margin: 0;
    border: 1px solid var(--mist);
    background: #f2efe8;
    overflow: hidden;
}

.ellipse-editorial img {
    width: 100%;
    height: auto;
    max-height: min(420px, 54vh);
    object-fit: contain;
    display: block;
    background: #111;
}

.ellipse-editorial figcaption,
.ellipse-video figcaption,
.ellipse-finale figcaption,
.ellipse-credit {
    font-family: poppins;
    font-size: var(--type-caption);
    line-height: 1.5;
    opacity: .5;
    margin: 8px 10px 10px;
}

.ellipse-credit {
    margin: 2px 0 0;
    opacity: .45;
}

/* ---- iteration process stack ---- */

.iter-stack {
    position: relative;
    margin-top: 48px;
    display: grid;
    gap: 0;
}

.iter-stack::before {
    content: "";
    position: absolute;
    left: 22px;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent,
        color-mix(in srgb, var(--accent) 55%, transparent) 8%,
        rgba(245, 245, 245, .14) 50%,
        color-mix(in srgb, var(--accent) 55%, transparent) 92%,
        transparent
    );
    pointer-events: none;
}

.iter-block {
    position: relative;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 0 22px;
    align-items: start;
    padding: 40px 0 52px;
    border-bottom: 1px solid rgba(245, 245, 245, .06);
}

.iter-block:last-child { border-bottom: 0; padding-bottom: 12px; }

.iter-rail {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    padding-top: 4px;
    align-self: stretch;
}

.iter-rail span {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
    background: #101010;
    color: var(--accent);
    font-family: poppins;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    display: grid;
    place-items: center;
    box-shadow: 0 0 0 6px #101010;
    position: sticky;
    top: 110px;
}

.iter-main {
    min-width: 0;
    display: grid;
    gap: 22px;
}

.iter-main > .iter-title {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .35em;
    padding-top: 14px;
    max-width: 920px;
}

.iter-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, .95fr);
    gap: 28px 36px;
    align-items: start;
}

.iter-block--flip .iter-body {
    grid-template-columns: minmax(260px, .95fr) minmax(0, 1fr);
}

.iter-block--flip .iter-copy { order: 2; }
.iter-block--flip .iter-side { order: 1; }

.iter-copy p {
    opacity: .88;
    margin: 0 0 14px;
}

.iter-copy code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .92em;
    color: color-mix(in srgb, var(--accent) 70%, whitesmoke);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    padding: 1px 6px;
}

.iter-outcome {
    margin: 18px 0 0 !important;
    padding-top: 14px;
    border-top: 1px solid rgba(245, 245, 245, .1);
    opacity: .95 !important;
}

.iter-side {
    display: grid;
    gap: 12px;
    position: sticky;
    top: 110px;
}

.iter-media { margin: 0; }

.iter-keys {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.iter-keys li {
    font-family: poppins;
    font-size: 10px;
    letter-spacing: .6px;
    text-transform: uppercase;
    color: rgba(245, 245, 245, .55);
    border: 1px solid rgba(245, 245, 245, .1);
    padding: 4px 8px;
    background: rgba(255, 255, 255, .015);
    line-height: 1.3;
}

.iter-keys code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 10px;
    letter-spacing: 0;
    text-transform: none;
    color: color-mix(in srgb, var(--accent) 65%, whitesmoke);
}

.iter-media-frame {
    position: relative;
    border: 1px solid var(--mist);
    background:
        linear-gradient(160deg, rgba(255, 255, 255, .03), transparent 42%),
        #0a0a0a;
    min-height: min(380px, 48vh);
    overflow: hidden;
    isolation: isolate;
}

.iter-media-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, .35)),
        repeating-linear-gradient(
            to bottom,
            transparent,
            transparent 3px,
            rgba(255, 255, 255, .015) 3px,
            rgba(255, 255, 255, .015) 4px
        );
    opacity: .7;
    z-index: 1;
}

.iter-media-frame video,
.iter-media-frame iframe {
    width: 100%;
    height: auto;
    max-height: min(420px, 52vh);
    min-height: min(280px, 40vh);
    object-fit: contain;
    display: block;
    background: #0a0a0a;
    position: relative;
    z-index: 0;
    border: 0;
}

.iter-media-frame iframe {
    aspect-ratio: 16 / 10;
    height: min(420px, 52vh);
    max-height: none;
}

.iter-media-frame--embed::after {
    display: none;
}

.iter-media-frame.is-empty video {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 1px;
    height: 1px;
}

.iter-media-fallback {
    display: none;
    position: absolute;
    inset: 0;
    z-index: 2;
    place-items: center;
    align-content: center;
    text-align: center;
    padding: 28px;
    background:
        radial-gradient(500px 280px at 50% 40%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
        #0a0a0a;
}

.iter-media-frame.is-empty .iter-media-fallback {
    display: grid;
}

.iter-media-tag {
    font-family: poppins;
    font-size: 11px;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

.iter-media-fallback p {
    font-family: poppins;
    font-size: 14px;
    opacity: .55;
    margin: 0;
}

.iter-media-fallback code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    color: rgba(245, 245, 245, .75);
}


.ellipse-interact-media {
    display: grid;
    gap: 16px;
}

.ellipse-video {
    margin: 0;
    border: 1px solid var(--mist);
    background: #0a0a0a;
    overflow: hidden;
}

.ellipse-video video {
    width: 100%;
    max-height: min(420px, 55vh);
    object-fit: contain;
    display: block;
    background: #f2efe8;
}

.ellipse-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 8px;
    align-items: center;
}

.ellipse-flow-node {
    border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    color: whitesmoke;
    font-family: poppins;
    font-size: 12px;
    letter-spacing: .4px;
    line-height: 1.45;
    text-align: center;
    padding: 14px 10px;
}

.ellipse-flow-arrow {
    color: var(--accent);
    font-size: 18px;
    opacity: .85;
}

.ellipse-finale {
    margin: 32px 0 0;
    border: 1px solid var(--mist);
    background: #f2efe8;
    overflow: hidden;
}

.ellipse-finale img {
    width: 100%;
    height: auto;
    max-height: min(640px, 72vh);
    object-fit: contain;
    display: block;
    background: #f2efe8;
}

@media (max-width: 980px) {
    .ellipse-rail { display: none; }
    .ellipse-dock { top: 120px; transform: none; }
    .ellipse-main.case-study { padding: 96px 18px 64px; }
    .ellipse-story .case-hero,
    .ellipse-split { grid-template-columns: 1fr; }
    .iter-stack::before { left: 17px; }
    .iter-block {
        grid-template-columns: 36px 1fr;
        gap: 0 14px;
    }
    .iter-rail span {
        width: 34px;
        height: 34px;
        font-size: 10px;
        position: static;
    }
    .iter-body,
    .iter-block--flip .iter-body {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .iter-block--flip .iter-copy,
    .iter-block--flip .iter-side { order: initial; }
    .iter-side { position: static; }
    .ellipse-flow {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    .ellipse-flow-arrow {
        justify-self: center;
        transform: rotate(90deg);
    }
}

@media (max-width: 640px) {
    .iter-media-frame { min-height: 240px; }
    .iter-media-frame video,
    .iter-media-frame iframe {
        max-height: 48vh;
        min-height: 200px;
        height: min(320px, 48vh);
    }
}

@media (prefers-reduced-motion: reduce) {
    .ellipse-story .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}