/* intro v17 — Death Note noir: circuit band, pulse rings, extrude text, duotone media, scroll slide-in */

/* Circuit-board traces — colour via Tailwind text-* on the band, currentColor in the pattern */
.intro-noir__circuit {
    background-image:
        repeating-linear-gradient(0deg, currentColor 0 1px, transparent 1px 32px),
        repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 32px);
    opacity: 0.18;
    -webkit-mask: linear-gradient(180deg, black, transparent);
    mask: linear-gradient(180deg, black, transparent);
}

/* Pulse rings from the band centre (size + placement so Bootstrap has no utility gap) */
.intro-noir__ring {
    width: 6rem;
    height: 6rem;
    top: 6rem;
    left: 50%;
    margin-left: -3rem;
    opacity: 0;
    animation: intro-noir-pulse 3.4s ease-out infinite;
}
.intro-noir__ring--2 { animation-delay: 1.7s; }

@keyframes intro-noir-pulse {
    0%   { transform: scale(0.4); opacity: 0.55; }
    100% { transform: scale(3.4); opacity: 0; }
}

/* Emboss seal circle */
.intro-noir__seal {
    width: 7rem;
    height: 7rem;
    font-size: 0.75rem;
    line-height: 1.1;
    padding: 0.75rem;
    transform: rotate(-8deg);
}

/* Extrude — stacked text-shadow depth using the element's own colour */
.intro-noir__extrude {
    text-shadow: 1px 1px 0 currentColor, 2px 2px 0 currentColor, 3px 3px 0 currentColor;
}

/* Duotone media: grayscale image + primary multiply tint (colour is a Tailwind class) */
.intro-noir__img {
    height: 10rem;
    object-fit: cover;
    filter: grayscale(1) contrast(1.05);
}

/* Sticky aside offset (Bootstrap position-sticky has no top-16 utility) */
@media (min-width: 992px) {
    .intro-noir__aside { top: 4rem; }
}
.intro-noir__tint {
    mix-blend-mode: multiply;
    opacity: 0.5;
}

/* Letter-spacing widen on hover */
.intro-noir__ttl { transition: letter-spacing 260ms ease; }
[data-card]:hover .intro-noir__ttl { letter-spacing: 0.08em; }

/* Slide-in entrance — pure CSS on the reliable [data-card] attribute; always ends visible */
@keyframes intro-noir-rise {
    from { opacity: 0; transform: translateY(2rem); }
    to   { opacity: 1; transform: translateY(0); }
}
.intro-noir [data-card] { animation: intro-noir-rise 560ms ease both; }

@media (prefers-reduced-motion: reduce) {
    .intro-noir__ring { animation: none; }
    .intro-noir [data-card] { animation: none; }
}

.content-col-grow {
    flex: 1 1 0%;
    min-width: 0;
}

.content-img-fill {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 16rem;
    min-width: 0;
    object-fit: cover;
    flex-shrink: 0;
}

.writeup-document__text-panel-inset {
    padding: 4rem;
}

.writeup-document__img-tilt {
    transform: rotate(6deg);
}


.weighin-splitview__mosaic--glass { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

.weighin-splitview__tag--glass { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

/* v23 - shared 2x2 grid: avoids mixing BS row/col percentage widths with a flex/CSS gap */
.panel-strip__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (max-width: 575.98px) {
    .panel-strip__grid {
        grid-template-columns: 1fr;
    }
}

/* v23 - fixed circle size for the number badge (no BS utility beyond w-25/50/75/100) */
.panel-strip__badge {
    width: 3.5rem;
    height: 3.5rem;
    flex-shrink: 0;
}

/* v23 - comic halftone dot pattern (currentColor keeps it theme-safe, no literal colors) */
.steps-comic-panel__halftone {
    position: absolute;
    top: 0;
    right: 0;
    width: 6rem;
    height: 6rem;
    opacity: 0.15;
    background-image: radial-gradient(currentColor 1.2px, transparent 1.2px);
    background-size: 8px 8px;
    pointer-events: none;
}

/* quote v12 — bookshelf shelf, velvet (SVG in template), smoke rise, extrude title, blur icon, clip reveal, gradient border spin */

.quote-shelf__velvet {
    animation: quoteShelfVelvetShimmer 8s ease-in-out infinite alternate;
}
@keyframes quoteShelfVelvetShimmer {
    0% { opacity: 0.35; }
    100% { opacity: 0.55; }
}

.quote-shelf__extrude {
    position: absolute;
    top: 0;
    left: 0;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    line-height: 1.2;
}

.quote-shelf__extrude--back {
    transform: translate(3px, 3px);
}
.quote-shelf__extrude--mid {
    transform: translate(6px, 6px);
}

.quote-shelf__smoke {
    position: absolute;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 9999px;
    bottom: 10%;
    animation: quoteShelfSmokeRise 5s ease-out infinite;
}
.quote-shelf__smoke--a { left: 12%; animation-delay: 0s; }
.quote-shelf__smoke--b { left: 28%; animation-delay: 1.1s; width: 0.375rem; height: 0.375rem; }
.quote-shelf__smoke--c { left: 52%; animation-delay: 2.4s; }
.quote-shelf__smoke--d { left: 71%; animation-delay: 0.7s; width: 0.625rem; height: 0.625rem; }
.quote-shelf__smoke--e { left: 88%; animation-delay: 3.2s; }
@keyframes quoteShelfSmokeRise {
    0% { transform: translateY(0) scale(0.6); opacity: 0; }
    12% { opacity: 0.75; }
    100% { transform: translateY(-9rem) scale(1.5); opacity: 0; }
}

.quote-shelf__pair {
    margin-left: -1rem;
    margin-right: -1rem;
}
@media (min-width: 768px) {
    .quote-shelf__pair {
        margin-left: -1.5rem;
        margin-right: -1.5rem;
    }
}

.quote-shelf__stage {
    perspective: 900px;
}

.quote-shelf__book-inner {
    height: 100%;
}
.quote-shelf__book-inner > article,
.quote-shelf__book-inner > div {
    height: 100%;
}

.quote-shelf__book:nth-child(odd) .quote-shelf__book-inner {
    transform: rotateY(-2deg);
}
.quote-shelf__book:nth-child(even) .quote-shelf__book-inner {
    transform: rotateY(2deg);
}
.quote-shelf__book-inner {
    transition: transform 250ms ease;
}
.quote-shelf__book-inner:hover,
.quote-shelf__book-inner:focus-within {
    transform: rotateY(0deg) translateY(-0.35rem);
}

.quote-shelf__border-wrap {
    position: relative;
    padding: 2px;
}
.quote-shelf__border-spin {
    position: absolute;
    inset: -1px;
    animation: quoteShelfBorderPulse 3.5s ease-in-out infinite;
}
@keyframes quoteShelfBorderPulse {
    0%, 100% { transform: scale(1); opacity: 0.45; }
    50% { transform: scale(1.015); opacity: 1; }
}

.quote-shelf__icon-stage {
    width: 5.5rem;
    height: 5.5rem;
    overflow: hidden;
}
.quote-shelf__icon-blur {
    position: absolute;
    top: 50%;
    left: 50%;
    filter: blur(10px);
    opacity: 0.55;
    transform: translate(-50%, -50%) scale(1.35);
    line-height: 1;
}
.quote-shelf__icon-sharp {
    line-height: 1;
}

.quote-shelf__reveal {
    clip-path: inset(0 0 100% 0);
    max-height: 0;
    overflow: hidden;
    transition: clip-path 280ms ease, max-height 280ms ease;
}
.quote-shelf__book-inner:hover .quote-shelf__reveal,
.quote-shelf__book-inner:focus-within .quote-shelf__reveal {
    clip-path: inset(0 0 0 0);
    max-height: 5rem;
}

.quote-shelf__rail {
    height: 0.5rem;
}
/* hover + focus affordances (layout/outline via theme token) */
@media (hover: hover) {
    .quote-shelf-root [role="listitem"]:hover,
    .quote-shelf-root article:hover,
    .quote-shelf-root [class*="quote-shelf__card"]:hover,
    .quote-shelf-root .quote-shelf__book:hover,
    .quote-shelf-root .quote-shelf__step:hover,
    .quote-shelf-root .quote-shelf__index-card:hover,
    .quote-shelf-root .quote-shelf__pill:hover,
    .quote-shelf-root .quote-shelf__item:hover {
        transform: translateY(-0.125rem);
    }
}

.quote-shelf-root [role="listitem"],
.quote-shelf-root article,
.quote-shelf-root [class*="quote-shelf__card"],
.quote-shelf-root .quote-shelf__book,
.quote-shelf-root .quote-shelf__step,
.quote-shelf-root .quote-shelf__index-card,
.quote-shelf-root .quote-shelf__pill {
    transition: transform 200ms ease;
}

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

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


.spark-boost__section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.spark-boost__inner {
    min-height: 500px;
    display: flex;
    align-items: center;
}

@media (min-width: 768px) {
    .spark-boost__inner { min-height: 600px; }
}

/* Bootstrap: как у Tailwind p-sm → md:p-lg → lg:p-xl → xl:p-4xl (без фиксированных 6rem на мобиле) */
.spark-boost__vessel-bs {
    box-sizing: border-box;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .spark-boost__vessel-bs { padding: 1.5rem; }
}

@media (min-width: 992px) {
    .spark-boost__vessel-bs { padding: 2rem; }
}

@media (min-width: 1280px) {
    .spark-boost__vessel-bs { padding: 6rem; }
}

/* Bootstrap: две колонки + стабильный gap (row/g-* часто «съедаются» сбросами) */
.spark-boost__split-grid-bs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .spark-boost__split-grid-bs { gap: 1.5rem; }
}

.spark-boost__split-grid-bs > * {
    flex: 1 1 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

@media (min-width: 992px) {
    .spark-boost__split-grid-bs {
        flex-wrap: nowrap;
    }

    .spark-boost__split-grid-bs > * {
        flex: 1 1 0;
        max-width: 50%;
    }
}

.spark-boost__slab--glass { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

@keyframes spark-boost-highlight-throb-seq {
    0%, 100% { opacity: 1; }
    50%       { opacity: .5; }
}
.spark-boost__highlight--throb {
    animation: spark-boost-highlight-throb-seq 2s cubic-bezier(.4,0,.6,1) infinite;
}

.spark-boost__prompt--glow:hover { transform: scale(1.05); transition: transform .2s ease; }

.spark-boost__control--glow:hover { transform: scale(1.05); transition: transform .2s ease; }

.spark-boost__surface--glow:hover { transform: scale(1.05); transition: transform .2s ease; }