/* intro v18 — Emigre clay: blurred photo, ECG draw, typewriter caret */

/* Blurred background photo, sharp panel sits over it */
.intro-clay [data-photo] {
    width: 66%;
    aspect-ratio: 4 / 3;
}
.intro-clay__img {
    object-fit: cover;
    filter: blur(5px) saturate(1.05);
    transform: scale(1.06);
}

/* Heartbeat / ECG line draw (stroke colour = currentColor from Tailwind text-*) */
.intro-clay__ecg-path {
    stroke-dasharray: 1400;
    stroke-dashoffset: 1400;
    animation: intro-clay-ecg 4s linear infinite;
}
@keyframes intro-clay-ecg {
    0%   { stroke-dashoffset: 1400; }
    60%  { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -1400; }
}

/* Typewriter caret while typing */
.intro-clay__type .is-typing {
    border-right: 2px solid currentColor;
    animation: intro-clay-caret 800ms step-end infinite;
}
@keyframes intro-clay-caret {
    50% { border-color: transparent; }
}

@media (prefers-reduced-motion: reduce) {
    .intro-clay__ecg-path { animation: none; stroke-dashoffset: 0; }
}

/* process stack — sticky scroll layering, marker, oversized step numbers */
.process-stack__marker {
    width: 0.625rem;
    height: 0.625rem;
}

.process-stack__num {
    font-size: clamp(3.5rem, 11vw, 7.5rem);
    line-height: 0.85;
    letter-spacing: -0.04em;
}

@media (min-width: 768px) {
    .process-stack__slot {
        min-height: min(52vh, 26rem);
    }

    .process-stack__slot:last-child {
        min-height: 0;
    }

    .process-stack__panel {
        position: sticky;
        top: 5rem;
        z-index: calc(var(--stack-index, 0) + 1);
    }
}

.timeline-emblem {
    width: 5rem;
    height: 5rem;
}

.timeline-spark {
    width: 0.75rem;
    height: 0.75rem;
}

.timeline-cloud-left {
    width: 16rem;
    height: 16rem;
}

.timeline-cloud-right {
    width: 20rem;
    height: 20rem;
    animation-delay: 1s;
}

.timeline-cloud-center {
    width: 24rem;
    height: 24rem;
    animation-delay: 2s;
}

.timeline-outline-square {
    width: 5rem;
    height: 5rem;
    animation-duration: 3s;
}

.timeline-outline-orb {
    width: 4rem;
    height: 4rem;
    animation-duration: 4s;
    animation-delay: 1s;
}

.timeline-halo-start {
    width: 8rem;
    height: 8rem;
    animation-duration: 20s;
}

.timeline-halo-end {
    width: 10rem;
    height: 10rem;
    animation-duration: 25s;
    animation-direction: reverse;
}

.timeline-spark-side {
    animation-delay: 0.5s;
}

.timeline-spark-center {
    animation-delay: 1s;
}

.timeline-cloud-left,
.timeline-cloud-right,
.timeline-cloud-center {
    animation-name: timeline-cloud__pulse;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.timeline-outline-square,
.timeline-outline-orb {
    animation-name: timeline-outline__bounce;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.timeline-halo-start,
.timeline-halo-end {
    animation-name: timeline-halo__spin;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

.timeline-spark-top,
.timeline-spark-side,
.timeline-spark-center {
    animation-name: timeline-spark__ping;
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    animation-iteration-count: infinite;
}

@keyframes timeline-cloud__pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes timeline-outline__bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-25%); }
}

@keyframes timeline-halo__spin {
    to { transform: rotate(360deg); }
}

@keyframes timeline-spark__ping {
    0% { transform: scale(1); opacity: 1; }
    75%, 100% { transform: scale(2); opacity: 0; }
}