/* ─────────────────────────────────────────────────────────────
   Field Frames — a quiet gallery that lets the photographs carry
   the color. Chrome is warm-neutral; the one accent (lichen) is
   drawn from coastal scrub and used sparingly.
   ───────────────────────────────────────────────────────────── */

:root {
  --ink:        #15140f;   /* warm near-black ground */
  --ink-soft:   #1d1b15;   /* raised surfaces */
  --paper:      #e9e5d9;   /* primary text */
  --paper-dim:  #9c988b;   /* secondary / mono labels */
  --lichen:     #93a382;   /* lone accent: coastal scrub */
  --hair:       rgba(233, 229, 217, 0.12);

  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --display: "Fraunces", Georgia, serif;

  --gap: 10px;
  --edge: clamp(16px, 4vw, 48px);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ── Masthead ───────────────────────────────────────────────── */
.masthead {
  padding: clamp(28px, 6vw, 64px) var(--edge) clamp(20px, 4vw, 40px);
  border-bottom: 1px solid var(--hair);
}

.wordmark {
  font-family: var(--display);
  font-optical-sizing: auto;
  font-weight: 400;
  font-size: clamp(2.4rem, 7vw, 4.75rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0;
}

.standfirst {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-dim);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em 0.9em;
}
.standfirst .coord { color: var(--lichen); }
.standfirst .sep { color: var(--hair); }
.standfirst .count { color: var(--paper-dim); }

/* ── Gallery (justified rows, laid out in JS) ───────────────── */
main { padding: clamp(20px, 4vw, 40px) var(--edge) 0; }

.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
}

.frame {
  position: relative;
  display: block;
  margin: 0;
  background: var(--ink-soft);
  cursor: zoom-in;
  overflow: hidden;
  /* width/height set inline by the justified-layout pass */
}

.frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
}
.frame img.loaded { opacity: 1; }

/* Contact-sheet index number, kept faint until hover. */
.frame .idx {
  position: absolute;
  top: 8px;
  left: 9px;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--paper);
  background: rgba(21, 20, 15, 0.55);
  padding: 2px 6px;
  border-radius: 2px;
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .frame img { transition: opacity 0.6s ease, transform 0.5s ease; }
  .frame .idx { transition: opacity 0.25s ease; }
  .frame:hover img { transform: scale(1.03); }
}
.frame:hover .idx,
.frame:focus-visible .idx { opacity: 1; }

.frame:focus-visible { outline: 2px solid var(--lichen); outline-offset: 2px; }

/* ── Status / empty / error ─────────────────────────────────── */
.status {
  padding: clamp(40px, 12vh, 120px) var(--edge);
  text-align: center;
  color: var(--paper-dim);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}
.status[hidden] { display: none; }
.status-line { margin: 0.4em 0; }
.status .hint { color: var(--lichen); }

/* ── Colophon ───────────────────────────────────────────────── */
.colophon {
  margin-top: clamp(48px, 8vw, 96px);
  padding: 24px var(--edge) 40px;
  border-top: 1px solid var(--hair);
  color: var(--paper-dim);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9em;
}
.colophon .sep { color: var(--hair); }

/* ── Lightbox ───────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(12, 11, 8, 0.96);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: clamp(16px, 4vw, 56px);
}
.lightbox.open { display: flex; }

.lb-stage {
  margin: 0;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.lb-img {
  max-width: 100%;
  max-height: 82vh;
  object-fit: contain;
  background: var(--ink-soft);
}
.lb-meta {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-dim);
  text-align: center;
}
.lb-meta .place { color: var(--paper); }
.lb-meta .accent { color: var(--lichen); }

.lb-close,
.lb-nav {
  position: absolute;
  background: none;
  border: 1px solid var(--hair);
  color: var(--paper);
  font-family: var(--mono);
  cursor: pointer;
  border-radius: 2px;
}
.lb-close {
  top: clamp(12px, 3vw, 28px);
  right: clamp(12px, 3vw, 28px);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 11px;
}
.lb-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
}
.lb-prev { left: clamp(8px, 2vw, 24px); }
.lb-next { right: clamp(8px, 2vw, 24px); }

@media (prefers-reduced-motion: no-preference) {
  .lb-close, .lb-nav { transition: border-color 0.2s ease, color 0.2s ease; }
}
.lb-close:hover, .lb-nav:hover { border-color: var(--lichen); color: var(--lichen); }
.lb-close:focus-visible, .lb-nav:focus-visible { outline: 2px solid var(--lichen); outline-offset: 2px; }

@media (max-width: 620px) {
  .lb-nav { width: 40px; height: 40px; }
  .lb-img { max-height: 74vh; }
}