/* 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; }
}

.content-ledger__stem {
    height: 4rem;
    transform: translateX(-50%);
}

.brief-sq-10 { width: 2.5rem; height: 2.5rem; flex-shrink: 0; }

.brief-glass-card,
.brief-glass-panel,
.brief-glass-value {
    backdrop-filter: blur(0.75rem);
    box-shadow: 0 1rem 2rem rgba(15, 23, 42, 0.08);
}

.brief-glass-card {
    background-color: rgba(var(--bs-body-bg-rgb), 0.72);
}

.brief-glass-panel,
.brief-glass-value {
    background-color: rgba(var(--bs-body-bg-rgb), 0.56);
}

.brief-brand-line {
    width: 2.5rem;
    height: 0.125rem;
    background-color: rgba(var(--bs-primary-rgb), 0.45);
}

.brief-orb-one {
    top: -6rem;
    left: -6rem;
    width: 24rem;
    height: 24rem;
    filter: blur(3rem);
}

.brief-orb-two {
    right: -6rem;
    bottom: -6rem;
    width: 20rem;
    height: 20rem;
    filter: blur(3rem);
}

.brief-orb-three {
    top: 50%;
    right: 25%;
    width: 14rem;
    height: 14rem;
    filter: blur(3rem);
}

.brief-cta-hover {
    transition: transform 0.3s ease;
}

.brief-cta-hover:hover {
    transform: scale(1.05);
}

.brief-card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.brief-card-hover:hover {
    transform: translateY(-0.25rem);
    box-shadow: var(--bs-box-shadow-lg);
}

.brief-icon-hover {
    transition: transform 0.3s ease;
}

.brief-card-hover:hover .brief-icon-hover {
    transform: scale(1.1);
}

.brief-title-hover {
    transition: color 0.3s ease;
}

.brief-card-hover:hover .brief-title-hover {
    color: var(--bs-primary);
}