/* 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; }
}

/* faq flip-click — 3D card flip on click */
.faq-flip-click__outer {
  perspective: 1000px;
  min-height: 14rem;
}

.faq-flip-click__inner {
  position: relative;
  width: 100%;
  min-height: 14rem;
  transition: transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  cursor: pointer;
}

.faq-flip-click__inner--flipped {
  transform: rotateY(180deg);
}

.faq-flip-click__face {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-flip-click__face--back {
  transform: rotateY(180deg);
}

@media (prefers-reduced-motion: reduce) {
  .faq-flip-click__inner {
    transition: none;
  }
}

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

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

.content-full-frame {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

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

.content-section-pad {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

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


.beacon-signal__section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.beacon-signal__inner {
    max-width: 64rem;
    width: 100%;
    box-sizing: border-box;
    padding-bottom: 1.5rem;
}

@keyframes beacon-signal-pin-blink-seq {
    0%, 100% { opacity: 1; }
    50%       { opacity: .5; }
}
.beacon-signal__pin--blink {
    animation: beacon-signal-pin-blink-seq 2s cubic-bezier(.4,0,.6,1) infinite;
}

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

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

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

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

/* Equal columns + row/column gap (flex-wrap + content width caused uneven cards) */
.beacon-signal__surround-row-bs {
    display: grid;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1rem;
    row-gap: 1.5rem;
}

@media (min-width: 768px) {
    .beacon-signal__surround-row-bs {
        column-gap: 1.25rem;
        row-gap: 1.75rem;
    }
}

@media (min-width: 992px) {
    .beacon-signal__surround-row-bs {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        column-gap: 1.5rem;
        row-gap: 1.75rem;
    }
}

.beacon-signal__surround-row-bs > .beacon-signal__record--glow {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0.5rem;
    min-width: 0;
    width: 100%;
    max-width: none;
    box-sizing: border-box;
}