/*
 * Portfolio showcase
 * Lewa strona: aktywny projekt + opis.
 * Prawa strona: płynna, zapętlona lista samych miniatur (4 widoczne na raz).
 */

.portfolio-showcase {
  --portfolio-gallery-height: clamp(500px, 49vw, 610px);
  --portfolio-rail-gap: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(230px, .62fr);
  gap: 24px;
  align-items: start;
  margin-top: 8px;
}

.portfolio-feature { min-width: 0; }

.portfolio-feature-link {
  display: block;
  border-radius: 24px;
  outline: none;
}

.portfolio-feature-window {
  position: relative;
  height: var(--portfolio-gallery-height);
  overflow: hidden;
  border: 1px solid rgba(89, 139, 205, .18);
  border-radius: 24px;
  background: #dfe8f5;
  box-shadow: 0 30px 82px rgba(18, 58, 117, .16);
  isolation: isolate;
  transform: translateZ(0);
}

.portfolio-feature-window::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent 30%, rgba(5,16,34,.08));
}

.portfolio-feature-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform .75s cubic-bezier(.2,.8,.2,1), opacity .24s ease, filter .24s ease;
}

.portfolio-feature-link:hover .portfolio-feature-image { transform: scale(1.018); }
.portfolio-feature-link:focus-visible .portfolio-feature-window { box-shadow: 0 0 0 3px rgba(34,132,255,.22), 0 30px 82px rgba(18,58,117,.16); }

.portfolio-feature.is-changing .portfolio-feature-image {
  opacity: .18;
  filter: blur(5px);
  transform: scale(1.025);
}

.portfolio-feature-shine {
  position: absolute;
  inset: -35%;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 42%, rgba(255,255,255,.28) 49%, transparent 56%);
  transform: translateX(-72%) rotate(4deg);
  transition: transform .9s cubic-bezier(.2,.75,.25,1);
}

.portfolio-feature-link:hover .portfolio-feature-shine { transform: translateX(72%) rotate(4deg); }

.portfolio-feature-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 4px 0;
}

.portfolio-feature-copy { max-width: 760px; }

.portfolio-feature-kicker {
  display: inline-block;
  color: var(--blue);
  font-size: 10px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 1.55px;
  text-transform: uppercase;
}

.portfolio-feature-meta h3 {
  margin: 6px 0 7px;
  color: var(--page-text);
  font-size: clamp(22px, 2.3vw, 30px);
  line-height: 1.12;
  letter-spacing: -1.15px;
}

.portfolio-feature-meta p {
  max-width: 680px;
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.65;
}

.portfolio-feature-open {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  margin-top: 8px;
  border: 1px solid rgba(92,132,186,.25);
  border-radius: 50%;
  background: rgba(255,255,255,.74);
  color: var(--page-text);
  font-size: 18px;
  backdrop-filter: blur(12px);
  transition: transform .25s ease, color .25s ease, background .25s ease, border-color .25s ease;
}

.portfolio-feature-open:hover,
.portfolio-feature-open:focus-visible {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
  transform: rotate(45deg);
}

.portfolio-rail {
  position: relative;
  min-width: 0;
}

.portfolio-rail-viewport {
  position: relative;
  height: var(--portfolio-gallery-height);
  overflow: hidden;
  border-radius: 22px;
  outline: none;
  cursor: grab;
  user-select: none;
  touch-action: pan-x;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 8%, #000 92%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 8%, #000 92%, transparent 100%);
}

.portfolio-rail-viewport:active { cursor: grabbing; }
.portfolio-rail-viewport:focus-visible { box-shadow: 0 0 0 3px rgba(44,139,255,.18); }

.portfolio-rail-track {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--portfolio-rail-gap);
  will-change: transform;
}

.portfolio-rail-set {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--portfolio-rail-gap);
}

.portfolio-thumb {
  position: relative;
  flex: 0 0 auto;
  width: 100%;
  height: calc((var(--portfolio-gallery-height) - (var(--portfolio-rail-gap) * 3)) / 4);
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(91,137,198,.16);
  border-radius: 17px;
  background: rgba(255,255,255,.2);
  box-shadow: 0 16px 38px rgba(20,58,111,.10);
  cursor: pointer;
  transform: translateZ(0);
  transition: transform .32s cubic-bezier(.2,.8,.2,1), border-color .25s ease, box-shadow .25s ease, opacity .25s ease;
}

.portfolio-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 0 rgba(35,133,255,0);
  transition: box-shadow .25s ease;
}

.portfolio-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  pointer-events: none;
  transition: transform .55s cubic-bezier(.2,.8,.2,1), filter .3s ease;
}

.portfolio-thumb:hover { transform: translateX(-5px) scale(.985); }
.portfolio-thumb:hover img { transform: scale(1.035); }

.portfolio-thumb.is-active {
  border-color: rgba(43,137,255,.72);
  box-shadow: 0 16px 42px rgba(10,96,232,.17), 0 0 0 1px rgba(43,137,255,.16);
}

.portfolio-thumb.is-active::after { box-shadow: inset 0 0 0 2px rgba(43,137,255,.62); }
.portfolio-thumb:focus-visible { outline: 3px solid rgba(43,137,255,.3); outline-offset: -3px; }

html[data-theme="dark"] .portfolio-feature-window {
  border-color: rgba(71,127,205,.22);
  background: #0d1622;
  box-shadow: 0 30px 86px rgba(0,0,0,.34);
}

html[data-theme="dark"] .portfolio-feature-open {
  border-color: rgba(78,126,192,.31);
  background: rgba(14,25,39,.82);
  color: #eaf3ff;
}

html[data-theme="dark"] .portfolio-feature-open:hover,
html[data-theme="dark"] .portfolio-feature-open:focus-visible { background: var(--blue); }

html[data-theme="dark"] .portfolio-thumb {
  border-color: rgba(63,112,177,.22);
  background: #0d1622;
  box-shadow: 0 16px 42px rgba(0,0,0,.24);
}

html[data-theme="dark"] .portfolio-thumb.is-active {
  border-color: rgba(55,146,255,.78);
  box-shadow: 0 18px 46px rgba(0,0,0,.32), 0 0 0 1px rgba(55,146,255,.22);
}

@media (max-width: 980px) {
  .portfolio-showcase {
    --portfolio-gallery-height: clamp(460px, 58vw, 570px);
    grid-template-columns: minmax(0, 1fr) minmax(190px, .42fr);
    gap: 18px;
  }
}

@media (max-width: 760px) {
  .portfolio-showcase {
    --portfolio-gallery-height: clamp(330px, 72vw, 500px);
    display: block;
  }

  .portfolio-feature-window { border-radius: 20px; }
  .portfolio-feature-meta { padding-top: 18px; }

  .portfolio-rail {
    margin-top: 24px;
  }

  .portfolio-rail-viewport {
    height: 150px;
    overflow: hidden;
    border-radius: 16px;
    cursor: grab;
    touch-action: pan-y;
    -webkit-mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
  }

  .portfolio-rail-track {
    width: auto;
    height: 100%;
    flex-direction: row;
    gap: var(--portfolio-rail-gap);
  }

  .portfolio-rail-set {
    width: auto;
    height: 100%;
    flex-direction: row;
    gap: var(--portfolio-rail-gap);
  }

  .portfolio-thumb {
    width: clamp(190px, 56vw, 270px);
    height: 100%;
  }

  .portfolio-thumb:hover { transform: translateY(-3px) scale(.985); }
}

@media (max-width: 520px) {
  .portfolio-showcase { --portfolio-gallery-height: 340px; }
  .portfolio-feature-meta { gap: 14px; }
  .portfolio-feature-meta h3 { font-size: 22px; }
  .portfolio-feature-meta p { font-size: 12px; }
  .portfolio-feature-open { flex-basis: 42px; width: 42px; height: 42px; }
  .portfolio-rail-viewport { height: 128px; }
  .portfolio-thumb { width: 190px; border-radius: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-feature-image,
  .portfolio-feature-shine,
  .portfolio-thumb,
  .portfolio-thumb img { transition: none !important; }
}