/* ── Article image lightbox (scripts/lightbox.js) ─────────────────────
   In-article images become buttons that open a full-screen viewer.
   Only transform + opacity are animated. Palette mirrors the post hero. */

:root {
  --lb-ink: #0a1004;
  --lb-cream: #faf9f4;
  --lb-gold: #dcac44;
  --lb-forest: #33441f;
  --lb-spring: cubic-bezier(.16, 1, .3, 1);
}

/* ── Inline trigger ─────────────────────────────────────────────────── */
.prose-blog .zoomable {
  position: relative;
  display: block;
  width: fit-content;
  max-width: 100%;
  margin: 1.8rem 0;
  padding: 0;
  border: 0;
  background: none;
  border-radius: .75rem;
  overflow: hidden;
  cursor: zoom-in;
  box-shadow: 0 1px 2px rgba(51, 68, 31, .06), 0 10px 30px -14px rgba(51, 68, 31, .28);
  transition: transform .35s var(--lb-spring);
}
.prose-blog .zoomable img {
  display: block;
  margin: 0;
  border-radius: 0;
  transition: transform .8s var(--lb-spring);
}
.prose-blog .zoomable:hover img,
.prose-blog .zoomable:focus-visible img { transform: scale(1.03); }
.prose-blog .zoomable:active { transform: scale(.985); }
.prose-blog .zoomable:focus-visible { outline: 2px solid var(--lb-forest); outline-offset: 4px; }

/* "Expand" badge, revealed on hover / keyboard focus */
.zoomable-badge {
  position: absolute;
  right: .85rem;
  bottom: .85rem;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  color: var(--lb-forest);
  background: rgba(250, 249, 244, .88);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: 0 6px 18px -6px rgba(10, 16, 5, .45);
  opacity: 0;
  transform: translateY(6px) scale(.9);
  transition: opacity .3s ease, transform .45s var(--lb-spring);
  pointer-events: none;
}
.zoomable:hover .zoomable-badge,
.zoomable:focus-visible .zoomable-badge { opacity: 1; transform: none; }
@media (hover: none) {
  .zoomable-badge { opacity: .92; transform: none; }   /* touch: always hint it's tappable */
}

/* ── Viewer ─────────────────────────────────────────────────────────── */
html.lb-open { overflow: hidden; }

.lb {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  grid-template-rows: auto 1fr auto;
  color: var(--lb-cream);
  font-family: 'DM Sans', sans-serif;
}
.lb[hidden] { display: none; }

/* Layered backdrop: ink base → warm + forest radials → grain */
.lb-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 92% 4%, rgba(255, 196, 90, .14) 0%, transparent 60%),
    radial-gradient(ellipse 55% 50% at 0% 0%, rgba(74, 92, 52, .38) 0%, transparent 58%),
    radial-gradient(ellipse 120% 90% at 50% 120%, rgba(139, 74, 44, .16) 0%, transparent 60%),
    rgba(10, 16, 5, .97);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity .45s ease;
}
.lb-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .1;
  mix-blend-mode: overlay;
  background-size: 180px 180px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.lb.is-open .lb-backdrop { opacity: 1; }

/* Top bar */
.lb-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem clamp(1rem, 4vw, 2.5rem);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .35s ease .1s, transform .6s var(--lb-spring) .1s;
}
.lb.is-open .lb-bar { opacity: 1; transform: none; }
.lb-counter {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(250, 249, 244, .72);
  font-variant-numeric: tabular-nums;
}
.lb-counter::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: rgba(220, 172, 68, .6);
}

/* Shared round control */
.lb-btn {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  border: 1px solid rgba(250, 249, 244, .22);
  background: rgba(250, 249, 244, .06);
  color: var(--lb-cream);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: transform .4s var(--lb-spring), opacity .25s ease;
}
.lb-btn::before {           /* hover fill fades in (opacity only) */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(250, 249, 244, .14);
  opacity: 0;
  transition: opacity .25s ease;
}
.lb-btn { position: relative; }
.lb-btn:hover::before { opacity: 1; }
.lb-btn:focus-visible { outline: 2px solid var(--lb-gold); outline-offset: 3px; }
.lb-btn:active { transform: scale(.92); }
.lb-btn .material-symbols-outlined { position: relative; font-size: 1.4rem; }
.lb-close:hover { transform: rotate(90deg); }
.lb-close:active { transform: rotate(90deg) scale(.92); }

/* Stage */
.lb-stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(.5rem, 2vw, 1.5rem);
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  min-height: 0;
}
.lb-figure {
  grid-column: 2;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 0;
  max-height: 100%;
}
.lb-img {
  display: block;
  max-width: min(100%, 1600px);
  max-height: calc(100vh - 12rem);
  max-height: calc(100dvh - 12rem);
  width: auto;
  height: auto;
  border-radius: .75rem;
  transform-origin: 0 0;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, .25),
    0 24px 60px -18px rgba(0, 0, 0, .65),
    0 50px 120px -40px rgba(51, 68, 31, .55);
  will-change: transform, opacity;
  user-select: none;
  -webkit-user-drag: none;
}
.lb-img.is-swapping { transition: opacity .22s ease, transform .45s var(--lb-spring); }

.lb-prev { grid-column: 1; }
.lb-next { grid-column: 3; }
.lb-prev:hover { transform: translateX(-3px); }
.lb-next:hover { transform: translateX(3px); }
.lb-prev:active { transform: translateX(-3px) scale(.92); }
.lb-next:active { transform: translateX(3px) scale(.92); }
.lb-nav[hidden] { display: none; }
.lb-nav { opacity: 0; transition: opacity .35s ease .15s, transform .4s var(--lb-spring); }
.lb.is-open .lb-nav { opacity: 1; }

/* Caption */
.lb-caption {
  position: relative;
  z-index: 2;
  max-width: 60ch;
  margin: 0 auto;
  padding: 1.1rem clamp(1rem, 4vw, 2.5rem) 1.75rem;
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.5;
  color: rgba(250, 249, 244, .86);
  min-height: 1.5rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s ease .15s, transform .6s var(--lb-spring) .15s;
}
.lb.is-open .lb-caption { opacity: 1; transform: none; }

/* Phones: arrows move under the image so the photo gets full width */
@media (max-width: 640px) {
  .lb-stage {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
    column-gap: .75rem;
    row-gap: 1.25rem;
    padding: 0 1rem;
  }
  .lb-figure { grid-column: 1 / -1; grid-row: 1; align-self: center; }
  .lb-img { max-height: calc(100vh - 15rem); max-height: calc(100dvh - 15rem); }
  .lb-prev { grid-column: 1; grid-row: 2; justify-self: end; }
  .lb-next { grid-column: 2; grid-row: 2; justify-self: start; }
  .lb-caption { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .prose-blog .zoomable, .prose-blog .zoomable img, .zoomable-badge,
  .lb-bar, .lb-caption, .lb-nav, .lb-btn, .lb-img.is-swapping { transition: opacity .2s ease; transform: none !important; }
}