/**
 * Computer builds - page-specific only
 * Shared UI lives in /projects/css/portfolio-ui.css
 * Carousel behavior: js/builds-concepts.js
 *
 * Note: do not set overflow-x: hidden on a page wrapper - it breaks position: sticky.
 */

.builds-intro-cta {
    margin-top: 1.25rem;
}

.builds-intro-cta .btn {
    margin: 0.25rem;
}

/* Overview grid - MDB card; overflow clips image to the card’s own radius */
.builds-overview-card {
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.builds-overview-card:hover {
    transform: translateY(-4px);
}

.builds-overview-card .builds-overview-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.55s ease;
}

.builds-overview-card:hover .builds-overview-img {
    transform: scale(1.05);
}

/* Detail layout + sticky jump list */
.builds-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .builds-layout {
        grid-template-columns: 210px 1fr;
        /* start so the sticky aside is only as tall as its content,
           but still sticks within the full-height grid row area */
        align-items: start;
    }
}

.builds-side-nav {
    /* Must be the grid item itself (not a nested child) or sticky has no room to travel */
    position: sticky;
    top: 1.25rem;
    z-index: 2;
    background: #fff;
    border: 1px solid rgba(0, 60, 94, 0.12);
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 4px 14px rgba(0, 60, 94, 0.06);
}

.builds-side-nav h6 {
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: #5f6b7a;
    margin: 0 0 0.75rem;
}

.builds-side-nav a {
    display: block;
    text-decoration: none;
    color: #003C5E;
    padding: 0.45rem 0.55rem;
    border-radius: 0.4rem;
    font-size: 0.92rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
    transition: background 0.2s ease;
}

.builds-side-nav a:hover,
.builds-side-nav a:focus {
    background: rgba(0, 60, 94, 0.08);
    color: #003C5E;
}

.builds-side-nav a span {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    color: #5f6b7a;
}

.builds-detail-block {
    padding: 2.5rem 0;
    border-bottom: 1px solid rgba(0, 60, 94, 0.12);
    scroll-margin-top: 1.25rem;
}

.builds-detail-block:last-child {
    border-bottom: 0;
}

.builds-specs {
    list-style: none;
    padding: 0;
    margin: 0;
}

.builds-specs > li {
    margin-bottom: 0.85rem;
}

.builds-specs-label {
    display: block;
    font-weight: 600;
    color: #003C5E;
    margin-bottom: 0.2rem;
    font-size: 0.92rem;
}

.builds-specs ul {
    margin: 0;
    padding-left: 1.1rem;
    color: #5f6b7a;
    font-weight: 300;
}

/* Thumb carousel - fixed frame for mixed aspect ratios */
.builds-thumb-carousel {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.builds-carousel {
    width: 100%;
    aspect-ratio: 4 / 5;
    max-height: 560px;
    border-radius: 0.5rem;
    overflow: hidden;
    background: #0d2137;
}

.builds-carousel .carousel-inner {
    height: 100%;
}

.builds-carousel .carousel-item {
    position: relative;
    height: 100%;
}

.builds-carousel-frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #0d2137;
}

.builds-carousel-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    cursor: zoom-in;
    display: block;
    transition: transform 0.55s ease;
}

.builds-carousel-frame:hover img {
    transform: scale(1.05);
}

.builds-thumb-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.builds-thumb {
    width: 84px;
    height: 84px;
    padding: 0;
    border: 4px solid rgba(0, 60, 94, 0.18);
    border-radius: 0.5rem;
    overflow: hidden;
    background: #0d2137;
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.builds-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
}

.builds-thumb:hover {
    transform: translateY(-2px);
    border-color: rgba(33, 150, 243, 0.55);
}

.builds-thumb.is-active {
    border-color: #2196f3;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.35);
}

@media (max-width: 576px) {
    .builds-overview-card .builds-overview-img {
        height: 180px;
    }

    .builds-carousel {
        max-height: 440px;
    }

    .builds-thumb {
        width: 72px;
        height: 72px;
        border-width: 3px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .builds-overview-card,
    .builds-overview-img,
    .builds-carousel-frame img,
    .builds-thumb,
    .builds-side-nav a {
        transition: none;
    }

    .builds-overview-card:hover,
    .builds-overview-card:hover .builds-overview-img,
    .builds-carousel-frame:hover img {
        transform: none;
    }
}