/* intro v24 — Arctic scandinavian: orbit animation, blur-in reveal, colour-invert hover */

/* Orbit circle animation */
.intro-arc__orbit {
    width: 20rem;
    height: 20rem;
    animation: intro-arc-orbit 20s linear infinite;
}
.intro-arc__dot { width: 1rem; height: 1rem; margin-left: -0.5rem; }
@keyframes intro-arc-orbit {
    to { transform: rotate(360deg); }
}

/* Blur-in — hidden only once JS arms it (no-JS content stays visible) */
.intro-arc.is-armed .intro-arc__blur {
    filter: blur(8px);
    opacity: 0;
    transition: filter 560ms ease, opacity 560ms ease;
}
.intro-arc.is-armed .intro-arc__blur.is-in {
    filter: blur(0);
    opacity: 1;
}

/* Colour invert on hover: descendants inherit the row's hover text colour (keyword only, no colour value) */
.intro-arc__row:hover * {
    color: inherit;
}

@media (prefers-reduced-motion: reduce) {
    .intro-arc__orbit { animation: none; }
    .intro-arc__blur { filter: none; opacity: 1; }
}

/* process glassmorphism — fog blobs, backdrop blur, rune decor, num sizing */
.process-glass__fog {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.process-glass__fog::before {
    content: '';
    position: absolute;
    width: 28rem;
    height: 28rem;
    border-radius: 50%;
    filter: blur(5rem);
    opacity: 0.1;
    top: -10rem;
    left: -5rem;
    background: var(--bs-primary);
}

.process-glass__fog::after {
    content: '';
    position: absolute;
    width: 22rem;
    height: 22rem;
    border-radius: 50%;
    filter: blur(5rem);
    opacity: 0.07;
    bottom: -8rem;
    right: -5rem;
    background: var(--bs-primary);
}

.process-glass__card {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.process-glass__card-hov:hover,
.process-glass__card-hov:focus-within {
    transform: translateY(-0.35rem);
    box-shadow: var(--bs-box-shadow-lg);
}

.process-glass__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 280ms ease, opacity 220ms ease, margin-top 220ms ease;
}

.process-glass__card-hov:hover .process-glass__detail,
.process-glass__card-hov:focus-within .process-glass__detail {
    max-height: 12rem;
    opacity: 1;
    margin-top: 0.25rem;
}

.process-glass__rune {
    position: absolute;
    font-size: 6rem;
    font-weight: 900;
    line-height: 1;
    opacity: 0.04;
    bottom: -0.5rem;
    right: 1rem;
    pointer-events: none;
    user-select: none;
}

.process-glass__num {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
    .process-glass__card,
    .process-glass__detail {
        transition: none;
    }

    .process-glass__card-hov:hover,
    .process-glass__card-hov:focus-within {
        transform: none;
    }

    .process-glass__detail {
        max-height: none;
        opacity: 1;
        overflow: visible;
    }
}

.classic-rail-timeline__line {
    width: 2px;
    left: 2rem;
}

@media (min-width: 768px) {
    .classic-rail-timeline__line {
        left: 50%;
        transform: translateX(-50%);
    }
}

.classic-rail-timeline__dot {
    width: 1rem;
    height: 1rem;
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

@media (min-width: 768px) {
    .classic-rail-timeline__dot {
        left: 50%;
        transform: translate(-50%, -50%);
    }
}

.classic-rail-timeline__content {
    margin-left: 5rem;
}

@media (min-width: 768px) {
    .classic-rail-timeline__content {
        margin-left: 0;
        width: 50%;
    }

    .classic-rail-timeline__content--start {
        padding-right: 2.5rem;
    }

    .classic-rail-timeline__content--end {
        padding-left: 2.5rem;
    }

    .classic-rail-timeline__row--reverse {
        flex-direction: row-reverse;
    }
}