/* Portfolio page — portfolio.html */

.page-head { padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 2.5rem); }
.page-head h1 { max-width: 18ch; margin-top: 0.75rem; }

/* ---------- Quick nav between projects ---------- */

.world-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  padding-bottom: clamp(2rem, 5vw, 3rem);
}
.world-nav a {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 0.2em;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.world-nav a:hover, .world-nav a:focus-visible { color: var(--ink); border-color: var(--ink); }

/* ---------- Project block ---------- */

.project-block { padding-block: clamp(3rem, 7vw, 5.5rem); }

.project-block__gallery {
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.project-block__body {
  max-width: 46em;
  margin-inline: auto;
  text-align: left;
}

.project-block__meta {
  font-size: var(--step--1);
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.project-block__desc {
  color: var(--ink-soft);
  font-size: var(--step-0);
  line-height: 1.6;
  max-width: 42em;
  margin-top: 1rem;
}

.project-block__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

/* ---------- Carousel ---------- */

.carousel { position: relative; }

.carousel__viewport {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-raised);
  touch-action: pan-y;
  cursor: grab;
}
.carousel__viewport:active { cursor: grabbing; }

.carousel__track {
  display: flex;
  transition: transform var(--slow) var(--ease);
  will-change: transform;
}
.carousel__track.is-dragging { transition: none; }

.carousel__slide {
  flex: 0 0 100%;
  min-width: 0;
  aspect-ratio: var(--ph-ratio, 8 / 5);
  position: relative;
}
.carousel__slide .media-placeholder { border: 0; height: 100%; }
.carousel__slide .media-placeholder img { object-fit: contain; }

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(6px);
  color: var(--ink);
  z-index: 2;
  transition: border-color var(--fast) var(--ease), opacity var(--fast) var(--ease);
}
.carousel__btn:hover, .carousel__btn:focus-visible { border-color: var(--ink); }
.carousel__btn svg { width: 1rem; height: 1rem; }
.carousel__btn--prev { left: 0.75rem; }
.carousel__btn--next { right: 0.75rem; }
.carousel__btn[disabled] { opacity: 0.2; pointer-events: none; }

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.9rem;
}
.carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.carousel__dot.is-active { background: var(--ink); transform: scale(1.35); }

/* Single-slide carousels don't need controls */
.carousel[data-single] .carousel__btn,
.carousel[data-single] .carousel__dots { display: none; }

@media (max-width: 640px) {
  .carousel__btn { width: 2rem; height: 2rem; }
}