/* intro v28 — Arc diagonal-split: clip split, floating rings, ransom-note words, grayscale hover, click burst */

/* Diagonal split zone */
.intro-arc2__split {
    clip-path: polygon(0 0, 100% 0, 100% 62%, 0 100%);
    opacity: 0.6;
}

/* Floating rings / donuts (fixed size — no BS w-N/h-N utility) */
.intro-arc2__ring { width: 10rem; height: 10rem; animation: intro-arc2-float 7s ease-in-out infinite; }
.intro-arc2__ring--2 { width: 6rem; height: 6rem; animation-duration: 9s; animation-delay: 1s; }
@keyframes intro-arc2-float {
    50% { transform: translateY(-1.2rem) rotate(20deg); }
}

/* Serif accent (paired with sans body) */
.intro-arc2__serif { font-family: ui-serif, Georgia, "Times New Roman", serif; }

/* Hero image grayscale → colour reveal on hover */
.intro-arc2__figure { aspect-ratio: 4 / 3; }
.intro-arc2__img {
    object-fit: cover;
    filter: grayscale(1);
    transition: filter 420ms ease;
}
.intro-arc2__figure:hover .intro-arc2__img { filter: grayscale(0); }

/* Ransom-note mixed letters: alternate rotation, weight, family (no colour) */
.intro-arc2__word {
    display: inline-block;
    margin-right: 0.25em;
}
.intro-arc2__word:nth-child(3n+1) { transform: rotate(-4deg); font-weight: 900; }
.intro-arc2__word:nth-child(3n+2) { transform: rotate(3deg);  font-family: ui-serif, Georgia, serif; font-style: italic; }
.intro-arc2__word:nth-child(3n+3) { transform: rotate(-1deg); font-weight: 700; text-transform: uppercase; }

/* Click burst spark (inherits the button's primary colour via currentColor) */
.intro-arc2__react { position: relative; overflow: visible; }
.intro-arc2__spark {
    position: absolute;
    left: 50%;
    top: 50%;
    pointer-events: none;
    animation: intro-arc2-burst 640ms ease-out forwards;
}
@keyframes intro-arc2-burst {
    to { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0.4) rotate(160deg); }
}

@media (prefers-reduced-motion: reduce) {
    .intro-arc2__ring { animation: none; }
}

/* gallery v15 — hero image object-fit (no Bootstrap analog) */
.gallery-hero-chips__img {
    object-fit: cover;
}


.content-flex-min {
    min-width: 0;
}

.leaf-chapter__photo--shift:hover { transform: scale(1.1); transition: transform .2s ease; }

.content-grid-gap {
    gap: 2rem;
}

.content-body-frame {
    max-width: 64rem;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.content-heading-gap {
    margin-bottom: 2rem;
}

.content-medium-height {
    display: block;
    width: 100%;
    height: 18rem;
    min-height: 18rem;
    flex-shrink: 0;
    object-fit: cover;
}

.content-large-height {
    display: block;
    width: 100%;
    height: 20rem;
    min-height: 20rem;
    flex-shrink: 0;
    object-fit: cover;
}

/* 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;
    }
}

/* Лише layout / рух; кольори теми — у Blade */
.socialproof-card-hover {
    transition:
        box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.socialproof__stat-value,
.socialproof__stat-label {
    transition: transform 0.3s ease, color 0.2s ease;
}

@media (hover: hover) {
    .socialproof-card-hover:hover {
        box-shadow: 0 22px 44px -18px rgba(15, 23, 42, 0.2);
    }

    .dark .socialproof-card-hover:hover {
        box-shadow: 0 22px 44px -14px rgba(0, 0, 0, 0.5);
    }

    .socialproof-card-hover:hover .socialproof__stat-value {
        transform: scale(1.08);
    }
}

@media (hover: hover) and (min-width: 640px) {
    .socialproof-card-hover--lift:hover {
        transform: translateY(-4px) scale(1.02);
    }
}

@media (prefers-reduced-motion: reduce) {
    .socialproof-card-hover,
    .socialproof__stat-value,
    .socialproof__stat-label {
        transition: none;
    }

    .socialproof-card-hover:hover,
    .socialproof-card-hover:hover .socialproof__stat-value,
    .socialproof-card-hover--lift:hover {
        transform: none;
    }
}

.socialproof__bubble-right::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid rgba(99, 102, 241, 0.12);
}

.socialproof__bubble-left::after {
    content: '';
    position: absolute;
    left: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid rgba(148, 163, 184, 0.15);
}

.dark .socialproof__bubble-right::after {
    border-left-color: rgba(99, 102, 241, 0.2);
}

.dark .socialproof__bubble-left::after {
    border-right-color: rgba(148, 163, 184, 0.1);
}

.socialproof__item {
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.socialproof__item.from-right {
    transform: translateX(30px);
}

.socialproof__item.from-left {
    transform: translateX(-30px);
}

.socialproof__item.visible {
    opacity: 1;
    transform: translateX(0);
}

.socialproof__bg-pattern {
    background-image: radial-gradient(circle, rgba(148,163,184,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
}