/* 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; }
}

.tips-numbered__card {
    max-width: 24rem;
}

.tips-numbered__thumb {
    width: 4rem;
    height: 4rem;
}

/* glossary zig — reserved for layout-only hooks; motion lives in Tailwind on @sem('row'). */

.wire-reader-split__decor--alpha {
    top: 5rem;
    left: 2.5rem;
    width: 2.5rem;
    height: 2.5rem;
    animation-duration: 4s;
}

.wire-reader-split__decor--beta {
    top: 10rem;
    right: 5rem;
    width: 2rem;
    height: 2rem;
    animation-duration: 3s;
}

.wire-reader-split__decor--gamma {
    bottom: 8rem;
    left: 25%;
    width: 1.5rem;
    height: 1.5rem;
    animation-duration: 2s;
}

.wire-reader-split__decor--delta {
    bottom: 5rem;
    right: 33.333%;
    width: 3rem;
    height: 3rem;
    animation-duration: 5s;
    animation-delay: 1s;
}

.wire-reader-split__underline {
    width: 6rem;
    height: 0.25rem;
}

.wire-reader-split__sidebar {
    flex: 0 0 40%;
}

.wire-reader-split__index-badge {
    width: 2rem;
    height: 2rem;
}

.wire-reader-split__viewport {
    flex: 0 0 60%;
    height: fit-content;
}

.wire-reader-split__media {
    height: 12rem;
}

.wire-reader-split__img {
    object-fit: cover;
}
.wire-reader-split__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}