/* 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; }
}

.maxim-hud__grid {
    background-image:
        linear-gradient(currentColor 1px, transparent 1px),
        linear-gradient(90deg, currentColor 1px, transparent 1px);
    background-size: 40px 40px;
}

.maxim-hud__bracket {
    width: 1.5rem;
    height: 1.5rem;
}

.maxim-hud__icon-box {
    width: 3rem;
    height: 3rem;
}

.float-jitter-grid__portrait {
    width: 7rem;
    height: 7rem;
}

@media (min-width: 768px) {
    .float-jitter-grid__portrait {
        width: 8rem;
        height: 8rem;
    }
}

.float-jitter-grid__beacon {
    width: 1.5rem;
    height: 1.5rem;
}

.float-jitter-grid__tile:nth-child(4n+2) {
    transform: translateY(1rem) translateX(0.5rem);
}

.float-jitter-grid__tile:nth-child(4n+3) {
    transform: translateY(2rem) translateX(-0.5rem);
}

.float-jitter-grid__tile:nth-child(4n+4) {
    transform: translateY(1rem) translateX(1rem);
}

.horizontal-snap-timeline__dot-grid {
    background-image: radial-gradient(circle, currentColor 1px, transparent 1px);
    background-size: 24px 24px;
}

.horizontal-snap-timeline__no-scrollbar::-webkit-scrollbar {
    display: none;
}

.horizontal-snap-timeline__no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.horizontal-snap-timeline__dot--active {
    width: 24px;
    height: 0.5rem;
    filter: brightness(1.05);
}

.horizontal-snap-timeline__dot--idle {
    width: 8px;
    height: 0.5rem;
    filter: brightness(0.55);
}

.horizontal-snap-timeline__nav {
    width: 2.5rem;
    height: 2.5rem;
    top: 50%;
    left: 0;
    transform: translateY(-50%) translateX(-1rem);
}

.horizontal-snap-timeline__nav--next {
    left: auto;
    right: 0;
    transform: translateY(-50%) translateX(1rem);
}

.horizontal-snap-timeline__icon {
    width: 2.5rem;
    height: 2.5rem;
}

.horizontal-snap-timeline__track {
    list-style: none;
    padding-left: 0;
    padding-top: 1rem;
    padding-bottom: 1rem;
    overflow-x: auto;
    overflow-y: visible;
}

.horizontal-snap-timeline__slide {
    width: 18rem;
    overflow: visible;
    padding-top: 0.25rem;
}

.horizontal-snap-timeline__card {
    transition: transform 200ms ease, box-shadow 200ms ease;
}

.horizontal-snap-timeline__card:hover {
    transform: translateY(-0.25rem);
}

@media (min-width: 768px) {
    .horizontal-snap-timeline__slide {
        width: 20rem;
    }
}

.horizontal-snap-timeline__bar {
    height: 2px;
}

.horizontal-snap-timeline__progress {
    height: 2px;
    width: var(--horizontal-snap-timeline__progress, 0%);
}