/* ==========================================================
   COMPONENTS: reusable building blocks
   We'll add cards, the lightbox, and sliders here later.
   ========================================================== */

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.25rem;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  border: 1px solid var(--accent);
  overflow: hidden;
  isolation: isolate;
  transition: color 0.5s var(--ease);
}

/* Fill-from-bottom hover effect */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform 0.5s var(--ease);
  z-index: -1;
}

.btn:hover {
  color: var(--black);
}
.btn:hover::before {
  transform: translateY(0);
}

.btn--solid {
  background: var(--accent);
  color: var(--black);
}
.btn--solid::before {
  background: var(--white);
}

/* ---------- Text link with animated underline ---------- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.4s ease, gap 0.4s var(--ease);
}
.link-arrow:hover {
  border-color: var(--accent);
  gap: 1.1rem;
}

/* ---------- Section heading block ---------- */
.section-head {
  max-width: 60ch;
  margin-bottom: clamp(2rem, 5vw, 4rem);
}
.section-head h2 {
  margin-top: 1rem;
}
.section-head p {
  margin-top: 1.25rem;
  color: var(--text-muted);
}

/* ---------- Round icon button (arrows, play/pause) ---------- */
.icon-btn {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(247, 245, 242, 0.3);
  border-radius: 50%;
  transition: background 0.4s ease, border-color 0.4s ease, color 0.4s ease;
}
.icon-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--black);
}

/* ==========================================================
   LIGHTBOX
   ========================================================== */
.lb {
  --pad-x: 1rem;
  --pad-top: 4.75rem;
  --pad-bottom: 6rem;
  position: fixed;
  inset: 0;
  z-index: 300; /* above the header */
  background: rgba(8, 8, 8, var(--bd, 0.96));
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  touch-action: none;
  overscroll-behavior: contain;
  transition: opacity 0.45s ease, visibility 0.45s;
}
.lb.is-open {
  opacity: 1;
  visibility: visible;
}

/* ---------- Top bar: counter + buttons ---------- */
.lb-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.75rem;
  padding: env(safe-area-inset-top, 0px) var(--gutter) 0;
  pointer-events: none; /* empty space still counts as "tap to close" */
}
.lb-top .icon-btn {
  pointer-events: auto;
}
.lb-count {
  font-size: var(--fs-small);
  letter-spacing: 0.25em;
  color: var(--text-muted);
}
.lb-count b {
  font-weight: 400;
  color: var(--text);
}
.lb-tools {
  display: flex;
  gap: 0.6rem;
}

/* ---------- Stage + photo ---------- */
.lb-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--pad-top) var(--pad-x) var(--pad-bottom);
  overflow: hidden;
  touch-action: none;
  cursor: zoom-in;
  user-select: none;
  -webkit-user-select: none;
}
.lb.is-zoomed .lb-stage {
  cursor: grab;
}

.lb-wrap {
  display: grid;
  transform-origin: center;
  will-change: transform;
}
.lb-wrap.is-snap {
  transition: transform 0.45s var(--ease);
}

.lb-img {
  display: block;
  max-width: calc(100vw - 2 * var(--pad-x));
  max-height: calc(100vh - var(--pad-top) - var(--pad-bottom));
  max-height: calc(100svh - var(--pad-top) - var(--pad-bottom));
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
  -webkit-user-drag: none;
}
.lb-img[hidden],
.lb-missing[hidden] {
  display: none;
}

/* Shown when a photo file doesn't exist yet */
.lb-missing {
  --ar: 1.5;
  display: grid;
  place-items: center;
  aspect-ratio: var(--ar);
  width: min(
    calc(100vw - 2 * var(--pad-x)),
    calc((100svh - var(--pad-top) - var(--pad-bottom)) * var(--ar))
  );
  background: radial-gradient(120% 80% at 20% 10%, #2e2a25 0%, #161513 60%, #0f0f0f 100%);
  font-size: var(--fs-small);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Loading ring (appears only if a photo is slow) */
.lb-stage::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 1px solid rgba(247, 245, 242, 0.2);
  border-top-color: var(--gold-light);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
}
.lb.is-loading .lb-stage::after {
  animation: lbSpin 0.9s linear infinite, lbAppear 0.3s 0.4s forwards;
}
@keyframes lbSpin {
  to { transform: rotate(360deg); }
}
@keyframes lbAppear {
  to { opacity: 1; }
}

/* ---------- Arrows (tablet and desktop only; phones swipe) ---------- */
.lb-arrow {
  display: none;
  position: absolute;
  top: 50%;
  z-index: 3;
  margin-top: -24px;
}
.lb-prev { left: 1rem; }
.lb-next { right: 1rem; }

@media (min-width: 601px) {
  .lb-arrow { display: grid; }
}
.lb.is-single .lb-arrow {
  display: none;
}

/* ---------- Caption ---------- */
.lb-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding: 1.25rem var(--gutter) calc(1.5rem + env(safe-area-inset-bottom, 0px));
  text-align: center;
  pointer-events: none;
}
.lb-title {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.75rem);
  font-weight: 400;
  line-height: 1.2;
}
.lb-coll {
  display: block;
  margin-top: 0.35rem;
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold-light);
}

/* Hide the extras while zoomed in */
.lb-caption,
.lb-arrow {
  transition: opacity 0.4s ease;
}
.lb.is-zoomed .lb-caption,
.lb.is-zoomed .lb-arrow {
  opacity: 0;
  pointer-events: none;
}

/* More room around the photo on large screens */
@media (min-width: 901px) {
  .lb {
    --pad-x: 6.5rem;
    --pad-top: 5rem;
    --pad-bottom: 6.5rem;
  }
  .lb-prev { left: 1.75rem; }
  .lb-next { right: 1.75rem; }
}

/* Hidden buttons stay hidden (e.g. the lightbox download button on public pages) */
.icon-btn[hidden],
.lb-dl[hidden] {
  display: none;
}