/*==========================================================
    Home "Portfolio" (design C = spotlight + carousel) — Views/Shared/_portfolioPartial.cshtml
    Heading + View All Projects -> one project shown large (spotlight) -> all projects in a
    scrollable row; picking a card moves it into the spotlight.
    Every class is prefixed pf- so the legacy .sixth-section / .portfolio-* rules in style.css
    and the Index inline <style> cannot leak in.
    Colours, type and radii come from tokens.css (every accent follows --brand).
==========================================================*/

.pf-section {
    padding: 80px clamp(18px, 5.5vw, 80px);
    background: var(--color-bg);
    font-family: var(--font-sans);
    color: var(--color-text);
    scroll-margin-top: var(--header-offset);
}
.pf-wrap { max-width: 1330px; margin: 0 auto; }
.pf-section ul { list-style: none; margin: 0; padding: 0; }

/* ---------- heading ---------- */
.pf-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.pf-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    background: var(--color-primary-soft);
    border: 1px solid var(--color-primary-soft-border);
    color: var(--color-primary-hover);
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.pf-eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--color-primary-bright); }
.pf-h2 {
    margin: 16px 0 0;
    font-size: clamp(1.9rem, 2.6vw + .6rem, 2.9rem);
    line-height: var(--lh-tight);
    font-weight: 800;
    letter-spacing: -.5px;
    color: var(--color-text);
}
/* span gradient: components.css (shared heading-highlight rule) */
.pf-lead { margin: 12px 0 0; font-size: 1.05rem; line-height: 1.75; color: var(--color-text-muted); }

.pf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 50px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: var(--fw-semibold);
    text-decoration: none;
    transition: transform var(--duration-base), background var(--duration-base), border-color var(--duration-base), color var(--duration-base);
}
.pf-btn--primary { background: var(--gradient-primary); color: #fff; box-shadow: var(--shadow-primary); }
.pf-btn--primary:hover, .pf-btn--primary:focus-visible { background: var(--gradient-primary-hover); color: #fff; transform: translateY(-2px); text-decoration: none; }
.pf-btn--ghost { background: #fff; color: var(--color-text); border: 1.5px solid var(--color-border); }
.pf-btn--ghost:hover, .pf-btn--ghost:focus-visible { border-color: var(--color-primary); color: var(--color-primary-hover); text-decoration: none; }
.pf-btn:focus-visible { outline: var(--focus-ring-width) solid var(--focus-ring-color); outline-offset: 2px; }

.pf-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pf-tags li, .pf-tags span {
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--color-primary-soft);
    border: 1px solid var(--color-primary-soft-border);
    color: var(--color-primary-hover);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
}

/* ---------- spotlight ---------- */
.pf-spot {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    margin-top: 40px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    scroll-margin-top: var(--header-offset);
}
/* design A: the screenshot sits in a browser window on a soft dotted brand background */
.pf-spot__shot {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    min-width: 0;
    background:
        radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--brand) 16%, transparent) 0 18%, transparent 19%),
        radial-gradient(color-mix(in srgb, var(--brand) 22%, transparent) 1.2px, transparent 1.6px) 0 0 / 18px 18px,
        linear-gradient(135deg, var(--color-primary-soft), color-mix(in srgb, var(--brand) 16%, #fff));
}
.pf-browser {
    width: 100%;
    max-width: 560px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid rgba(15, 23, 42, .08);
    box-shadow: 0 24px 50px rgba(15, 23, 42, .18);
    overflow: hidden;
}
.pf-browser__bar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; background: var(--color-neutral-100); border-bottom: 1px solid var(--color-border); }
.pf-browser__bar > i { width: 10px; height: 10px; border-radius: 50%; background: #f87171; flex: none; }
.pf-browser__bar > i:nth-child(2) { background: #fbbf24; }
.pf-browser__bar > i:nth-child(3) { background: #34d399; }
.pf-browser__url {
    flex: 1;
    min-width: 0;
    margin-left: 10px;
    padding: 5px 10px;
    border-radius: var(--radius-pill);
    background: #fff;
    font-size: 12px;
    color: var(--color-text-subtle);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pf-browser__url::before { content: "\f023"; margin-right: 6px; font: 900 10px "Font Awesome 6 Free"; color: var(--color-success); }
.pf-browser__view { height: 300px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: #fff; }
.pf-browser__view img {
    display: block;
    width: 100%;
    max-width: var(--pf-natw, 100%);   /* low-res screenshots are never enlarged past their real size */
    height: auto;
    flex: none;
    transition: transform var(--pf-scroll-time, 4s) ease-in-out;
}
.pf-browser__view.is-tall { align-items: flex-start; }
.pf-spot__shot:hover .pf-browser__view.is-tall img { transform: translateY(var(--pf-scroll, 0)); }
.pf-browser__hint { margin: 12px 0 0; font-size: 12px; color: var(--color-text-subtle); }
.pf-browser__hint[hidden] { display: none; }
@media (hover: none) { .pf-browser__hint { display: none; } }
.pf-spot__info { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding: 40px; min-width: 0; }
.pf-spot__kicker { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-primary-hover); }
.pf-spot h3 { margin: 10px 0 0; font-size: clamp(1.5rem, 1.6vw + .8rem, 2rem); font-weight: 800; line-height: 1.2; color: var(--color-text); }
.pf-spot p { margin: 12px 0 0; line-height: 1.75; color: var(--color-text-muted); }
.pf-spot .pf-tags { margin-top: 18px; }
.pf-spot .pf-btn { margin-top: 26px; max-width: 100%; }
.pf-spot .pf-btn span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-spot.is-swap .pf-browser, .pf-spot.is-swap .pf-spot__info > * { animation: pf-in .35s var(--ease-standard); }
@keyframes pf-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- row of projects ---------- */
.pf-rail-head { display: flex; align-items: center; justify-content: space-between; margin-top: 40px; }
.pf-rail-head h3 { margin: 0; font-size: 1.1rem; font-weight: var(--fw-bold); color: var(--color-text); }
.pf-arrows { display: flex; gap: 8px; }
.pf-arrow {
    width: 42px; height: 42px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-neutral-700);
    cursor: pointer;
    transition: background var(--duration-base), border-color var(--duration-base), color var(--duration-base);
}
.pf-arrow:hover:not(:disabled) { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.pf-arrow:disabled { opacity: .4; cursor: default; }
.pf-arrow:focus-visible { outline: var(--focus-ring-width) solid var(--focus-ring-color); outline-offset: 2px; }

.pf-section .pf-rail {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: calc((100% - 3 * 20px) / 4);
    gap: 20px;
    margin-top: 16px;
    padding: 4px 2px 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}
.pf-rail::-webkit-scrollbar { display: none; }
.pf-rail > li { display: flex; scroll-snap-align: start; }

.pf-card {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 24px;
    background: #fff;
    overflow: hidden;
    font: inherit;
    text-align: left;
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--duration-base), box-shadow var(--duration-base), transform var(--duration-base);
}
.pf-card:hover { border-color: var(--color-primary-soft-border); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.pf-card.is-on { border-color: var(--color-primary); box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand) 30%, transparent); }
.pf-card:focus-visible { outline: var(--focus-ring-width) solid var(--focus-ring-color); outline-offset: 2px; }

.pf-card__shot { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--color-neutral-100); border-bottom: 1px solid var(--color-border); }
.pf-card__shot img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .5s var(--ease-standard); }
.pf-card:hover .pf-card__shot img { transform: scale(1.04); }
.pf-card__tag {
    position: absolute; right: 10px; top: 10px;
    padding: 6px 11px;
    border-radius: var(--radius-pill);
    background: rgba(15, 26, 46, .82);
    color: #fff;
    font-size: 11.5px;
    font-weight: var(--fw-semibold);
    opacity: 0;
    transition: opacity var(--duration-base);
}
.pf-card:hover .pf-card__tag, .pf-card:focus-visible .pf-card__tag { opacity: 1; }
.pf-card.is-on .pf-card__tag { display: none; }

.pf-card__body { display: flex; flex-direction: column; flex: 1; padding: 14px 16px; }
.pf-card__title { font-size: .98rem; font-weight: var(--fw-bold); line-height: var(--lh-snug); }
.pf-card__desc {
    margin-top: 6px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pf-card .pf-tags { margin-top: auto; padding-top: 12px; }
.pf-card__foot { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--color-neutral-100); font-size: 13px; font-weight: var(--fw-semibold); color: var(--color-primary-hover); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- responsive ---------- */
@media (max-width: 1199px) {
    .pf-section .pf-rail { grid-auto-columns: calc((100% - 2 * 20px) / 3); }
}
@media (max-width: 991px) {
    .pf-spot { grid-template-columns: 1fr; }
    .pf-spot__shot { padding: 32px 24px; }
    .pf-spot__info { padding: 28px; }
    .pf-section .pf-rail { grid-auto-columns: calc((100% - 20px) / 2); }
}
@media (max-width: 767px) {
    .pf-section { padding: 56px 16px; }
    .pf-head .pf-btn { width: 100%; }
    .pf-spot { margin-top: 24px; }
    .pf-spot__shot { padding: 20px 14px; }
    .pf-browser__view { height: 210px; }
    .pf-spot__info { padding: 22px; }
    .pf-spot .pf-btn { width: 100%; }
    .pf-section .pf-rail { grid-auto-columns: 78%; gap: 14px; }
    .pf-card__tag { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
    .pf-card, .pf-card__shot img, .pf-btn, .pf-arrow { transition: none; }
    .pf-spot.is-swap .pf-browser, .pf-spot.is-swap .pf-spot__info > * { animation: none; }
    .pf-browser__view img { transition: none; }
    .pf-spot__shot:hover .pf-browser__view.is-tall img { transform: none; }
}