/* intro v29 — Rolls-Royce thread: circle-expand reveal, half-ring, chat alignment, dual-layer parallax */

.intro-thread { min-height: 88vh; }

/* Clip-path circle expand from centre on load */
.intro-thread__reveal {
    animation: intro-thread-expand 900ms ease forwards;
}
@keyframes intro-thread-expand {
    from { clip-path: circle(0% at 50% 50%); }
    to   { clip-path: circle(150% at 50% 50%); }
}

/* Half-ring at the boundary (fixed size — no BS w-N/h-N utility) */
.intro-thread__half {
    width: 16rem;
    height: 8rem;
    opacity: 0.7;
    filter: blur(2px);
}
.intro-thread__sun { width: 6rem; height: 6rem; }
.intro-thread [data-msg] { max-width: 28rem; }

/* Dual-layer parallax offset (set by JS via custom props) */
.intro-thread__island [data-layer] {
    transition: transform 200ms ease-out;
    transform: translate(var(--px, 0), var(--py, 0));
}

/* Chat thread alternate alignment + retro corner tails */
.intro-thread [data-msg] { border-bottom-left-radius: 0.25rem; }
.intro-thread [data-msg]:nth-child(even) {
    margin-left: auto;
    border-bottom-left-radius: 1rem;
    border-bottom-right-radius: 0.25rem;
}

@media (prefers-reduced-motion: reduce) {
    .intro-thread__reveal { animation: none; }
    .intro-thread__island [data-layer] { transition: none; }
}

.services__tile--lift {
  transition: transform 0.3s ease;
}

.services__tile--lift:hover {
  transform: scale(1.05);
}

/* process film — card image fit */
.process-film__img-wrap {
    aspect-ratio: 4 / 5;
    overflow: hidden;
}

.process-film__img {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

/* process film — full-section animated primary blur */
.process-film__blur {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.process-film__blur--a {
    width: 75%;
    height: 85%;
    top: -25%;
    left: -20%;
    animation: process-film-blur-drift-a 10s ease-in-out infinite;
}

.process-film__blur--b {
    width: 70%;
    height: 80%;
    top: 0;
    right: -25%;
    animation: process-film-blur-drift-b 12s ease-in-out infinite;
}

.process-film__blur--c {
    width: 80%;
    height: 90%;
    bottom: -30%;
    left: 5%;
    animation: process-film-blur-drift-c 14s ease-in-out infinite;
}

.process-film__blur--d {
    width: 65%;
    height: 75%;
    top: 25%;
    left: 25%;
    animation: process-film-blur-drift-d 11s ease-in-out infinite;
}

.process-film__blur--delay {
    animation-delay: 2.5s;
}

@keyframes process-film-blur-drift-a {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.75;
    }

    50% {
        transform: translate(8%, 6%) scale(1.08);
        opacity: 1;
    }
}

@keyframes process-film-blur-drift-b {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.7;
    }

    50% {
        transform: translate(-6%, 8%) scale(1.06);
        opacity: 0.95;
    }
}

@keyframes process-film-blur-drift-c {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.65;
    }

    50% {
        transform: translate(5%, -6%) scale(1.1);
        opacity: 0.9;
    }
}

@keyframes process-film-blur-drift-d {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }

    50% {
        transform: translate(-4%, 5%) scale(1.07);
        opacity: 0.85;
    }
}

@media (prefers-reduced-motion: reduce) {
    .process-film__blur {
        animation: none;
    }
}

/* advantages timeline path — connector line + icon node sizing + scroll reveal + decor orb (layout/motion only, no colors) */

.advantages-path__orb {
    width: 18rem;
    height: 18rem;
    top: -5rem;
    right: -6rem;
}

.advantages-path__node {
    width: 2.5rem;
    height: 2.5rem;
}

/* vertical connector aligned to the node centre (node is 2.5rem → centre at 1.25rem) */
.advantages-path__line {
    left: 1.25rem;
    width: 2px;
}

/* scroll reveal — only armed once JS runs, so the list stays visible without JS */
.advantages-path.is-armed .advantages-path__item {
    opacity: 0;
    transform: translateY(1rem);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.advantages-path.is-armed .advantages-path__item.is-visible {
    opacity: 1;
    transform: none;
}

/* quote — featured academic quote + supporting cards */

/* serif lead + drop-cap. BS has no font-serif utility; font-family here is allowed (it is not a color) */
.quote-essay__lead {
    font-family: ui-serif, Georgia, "Times New Roman", serif;
}

.quote-essay__lead::first-letter {
    float: left;
    font-size: 3.25rem;
    line-height: 0.8;
    padding-right: 0.5rem;
    font-weight: 700;
}

/* author avatar: fixed size + cover (neither has a BS utility) */
.quote-essay__avatar {
    width: 3.5rem;
    height: 3.5rem;
    object-fit: cover;
}

.quote-essay__glow {
    width: 16rem;
    height: 16rem;
    filter: blur(64px);
}

/* stepping-stone offset rhythm on supporting cards — layout only */
@media (min-width: 1024px) {
    .quote-essay__step:nth-child(odd) {
        transform: translateY(0.75rem);
    }
    .quote-essay__step:nth-child(even) {
        transform: translateY(-0.25rem);
    }
}
/* hover + focus affordances (layout/outline via theme token) */
@media (hover: hover) {
    .quote-essay-root [role="listitem"]:hover,
    .quote-essay-root article:hover,
    .quote-essay-root [class*="quote-essay__card"]:hover,
    .quote-essay-root .quote-essay__book:hover,
    .quote-essay-root .quote-essay__step:hover,
    .quote-essay-root .quote-essay__index-card:hover,
    .quote-essay-root .quote-essay__pill:hover,
    .quote-essay-root .quote-essay__item:hover {
        transform: translateY(-0.125rem);
    }
}

.quote-essay-root [role="listitem"],
.quote-essay-root article,
.quote-essay-root [class*="quote-essay__card"],
.quote-essay-root .quote-essay__book,
.quote-essay-root .quote-essay__step,
.quote-essay-root .quote-essay__index-card,
.quote-essay-root .quote-essay__pill {
    transition: transform 200ms ease;
}

.quote-essay-root a:focus-visible,
.quote-essay-root button:focus-visible,
.quote-essay-root [tabindex="0"]:focus-visible,
.quote-essay-root input:focus-visible,
.quote-essay-root summary:focus-visible,
.quote-essay-root [role="slider"]:focus-visible {
    outline: 2px solid var(--bs-primary);
    outline-offset: 2px;
}

@media (hover: hover) {
    .quote-essay-root button:hover,
    .quote-essay-root a:hover,
    .quote-essay-root summary:hover {
        opacity: 0.92;
    }
}