:root {
  /* gallery scheme: grey sheet, dark film, amber edge print */
  --sheet: #dcdcdf;
  --film: #1b1b1d;
  --ink: #26262a;
  --muted: #6c6c72;
  --accent: #85520a;
  --edge: #d9a441;
  --inlay: rgba(40, 40, 45, 0.5); /* description grey on phones */
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

body {
  margin: 0;
  background: var(--sheet);
  color: var(--ink);
}

.gallery-wrap {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 16px 80px;
  overflow-x: clip;
}

.gallery-main {
  flex: 1;
  min-width: 0;
}

/* ---------- grouping toggle ---------- */

.by-toggle {
  display: flex;
  border: 1px solid #9a9aa0;
  border-radius: 4px;
  overflow: hidden;
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.by-toggle button {
  flex: 1;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.by-toggle button[aria-pressed="true"] {
  background: var(--ink);
  color: #f2f2f4;
}

.toolbar {
  display: none;
  margin: 16px 0 4px;
}

/* ---------- right rail ---------- */

.rail {
  flex: none;
  width: 150px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.rail-list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-y: auto;
  scrollbar-width: none;
}

.rail-list::-webkit-scrollbar { display: none; }

.rail-list .yr {
  margin: 14px 0 4px;
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.2em;
  color: var(--muted);
}

.rail-list .yr:first-child { margin-top: 0; }

.rail-list button {
  display: block;
  width: 100%;
  padding: 5px 0 5px 10px;
  border: 0;
  border-left: 2px solid #b4b4ba;
  background: none;
  color: var(--muted);
  font: 11px/1.3 var(--mono);
  letter-spacing: 0.12em;
  text-align: left;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.rail-list button:hover { color: var(--ink); }

.rail-list button[aria-current="true"] {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ---------- contact sheet ---------- */

.roll {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 2px 12px;
  background: linear-gradient(var(--sheet) 65%, transparent);
  font-family: var(--mono);
}

.roll h2 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink);
}

.roll span {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.sec { scroll-margin-top: 8px; margin-bottom: 18px; }

.strip-wrap { margin-bottom: 22px; }

.strip-wrap.pending { overflow: hidden; }

.strip {
  --edge-h: 11px; /* film margin above the top holes (counter row) and below the bottom holes */
  background: var(--film);
  border-radius: 3px;
  transition: transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), opacity 0.9s;
}

.strip::after {
  content: "";
  display: block;
  height: var(--edge-h);
}

.strip.pre-l { transform: translateX(-110%); }
.strip.pre-r { transform: translateX(110%); }

.sprockets {
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='16'%3E%3Crect x='6' y='4' width='10' height='8' rx='2' fill='%23dcdcdf'/%3E%3C/svg%3E") repeat-x;
}

.cells,
.nums {
  display: grid;
  grid-template-columns: repeat(var(--n), 1fr);
  gap: 6px;
  padding: 0 10px;
}

.cell {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.frame,
.blank {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  padding: 0;
  border: 0;
  background: #000;
}

.blank { background: #131315; }

.frame {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.18s ease-out;
}

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

.frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 1.2s ease calc(var(--i) * 90ms);
}

.strip.dark .frame img { filter: brightness(0); }

.fno {
  box-sizing: border-box;
  height: var(--edge-h);
  padding: 2px 2px 0;
  font: 600 10px/9px var(--mono);
  letter-spacing: 0.08em;
  color: var(--edge);
  opacity: 0.85;
}

.empty-note {
  padding: 60px 0;
  text-align: center;
  color: var(--muted);
  font-family: var(--mono);
}

/* ---------- popup ---------- */

/* museum wall: white, image lifted by a soft shadow */
.pop {
  --reel-h: 132px;
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  padding: 24px 24px var(--reel-h);
  background: #fff;
  animation: pop-in 0.25s ease-out;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.pop[hidden] { display: none; }

@keyframes pop-in { from { opacity: 0; } }

.pop-frame {
  position: relative;
  margin: 0;
  width: fit-content;
  max-width: 100%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 16px 48px rgba(0, 0, 0, 0.18);
  transition: transform 0.32s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}

.pop.immersive .pop-frame { box-shadow: none; }

.pop-frame img {
  display: block;
  width: auto;
  height: auto;
  max-width: calc(100vw - 48px);
  max-height: calc(100vh - var(--reel-h) - 24px);
  max-height: calc(100dvh - var(--reel-h) - 24px);
  opacity: 0;
  transform: scale(0.98);
  cursor: pointer;
  transition: opacity 0.35s, transform 0.35s;
}

.pop-frame img.ready { opacity: 1; transform: none; }

/* description lives on the image: very translucent grey, darker on hover */
.pop-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 45%;
  overflow-y: auto;
  box-sizing: border-box;
  padding: 16px 20px;
  background: rgba(70, 70, 75, 0.22);
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.65);
  cursor: pointer;
  font: 15px/1.6 Georgia, "Times New Roman", serif;
  transition: background 0.2s, opacity 0.3s;
}

.pop-info:hover { background: rgba(25, 25, 28, 0.82); }
.pop-info[hidden] { display: none; }

/* click image or description: description fades out and the image fills the screen */
.pop.immersive .pop-info { opacity: 0; }

.pop[data-layout="top"] .pop-info { top: 0; bottom: auto; }

.pop[data-layout="tl"] .pop-info,
.pop[data-layout="tr"] .pop-info,
.pop[data-layout="bl"] .pop-info,
.pop[data-layout="br"] .pop-info {
  width: 38%;
  max-height: 50%;
}

.pop[data-layout="tl"] .pop-info { top: 0; bottom: auto; right: auto; }
.pop[data-layout="tr"] .pop-info { top: 0; bottom: auto; left: auto; }
.pop[data-layout="bl"] .pop-info { right: auto; }
.pop[data-layout="br"] .pop-info { left: auto; }

.pop-top { display: none; }

.pop-meta,
.pop-film {
  margin: 0 0 6px;
  font: 11px/1.6 var(--mono);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.pop-meta { color: #ffd58a; }
.pop-film { color: rgba(255, 255, 255, 0.8); }
.pop-meta:empty, .pop-film:empty { display: none; }
.pop-desc { margin: 4px 0 0; }

.pop-x {
  position: fixed;
  top: 18px;
  right: 22px;
  z-index: 6;
  width: 40px;
  height: 40px;
  border: 1px solid #b8b8bd;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
  font-size: 16px;
  cursor: pointer;
}

.pop-x:hover { border-color: var(--ink); background: #fff; }

.pop-nav {
  position: fixed;
  top: calc((100vh - var(--reel-h)) / 2);
  top: calc((100dvh - var(--reel-h)) / 2);
  z-index: 6;
  width: 44px;
  height: 44px;
  padding: 0 0 4px;
  border: 1px solid #b8b8bd;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  transform: translateY(-50%);
  cursor: pointer;
  transition: opacity 0.3s, border-color 0.15s, background 0.15s;
}

.pop-nav:hover { border-color: var(--ink); background: #fff; }
.pop-nav[hidden] { display: none; }
.pop-prev { left: 20px; }
.pop-next { right: 20px; }
.pop.immersive .pop-nav { opacity: 0; pointer-events: none; }

/* ---------- mini reel ---------- */

.reel {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  transition: transform 0.3s, opacity 0.3s;
}

.pop.immersive .reel {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}

.reel-strip {
  max-height: 110px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  background: var(--film);
  transition: max-height 0.3s;
}

.reel-film {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  box-sizing: border-box;
  width: max-content;
  min-width: 100%;
  padding: 18px 12px;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='16'%3E%3Crect x='6' y='4' width='10' height='8' rx='2' fill='%23fff'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='16'%3E%3Crect x='6' y='4' width='10' height='8' rx='2' fill='%23fff'/%3E%3C/svg%3E");
  background-position: 0 0, 0 100%;
  background-repeat: repeat-x;
}

.reel-thumb {
  flex: none;
  height: 54px;
  aspect-ratio: 3 / 2;
  padding: 0;
  border: 0;
  background: #000;
  outline: 2px solid transparent;
  outline-offset: 2px;
  opacity: 0.55;
  cursor: pointer;
  transition: opacity 0.15s, outline-color 0.15s;
}

.reel-thumb:hover { opacity: 0.9; }
.reel-thumb:focus-visible { outline-color: #fff; }
.reel-thumb[aria-current="true"] { opacity: 1; outline-color: var(--edge); }

.reel-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reel-sec {
  flex: none;
  width: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font: 600 9px/1.2 var(--mono);
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  color: var(--edge);
}

.reel-sec span {
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* ---------- narrow screens ---------- */

@media (max-width: 1100px) {
  .rail { width: 120px; }
}

@media (max-width: 767px) {
  .rail { display: none; }
  .toolbar { display: flex; }
  .gallery-wrap { padding: 0 10px 60px; }
}

/* ---------- phone popup ----------
   phone = narrow screen, or a phone turned sideways (short landscape screen).
   JS sets data-mlayout on .pop:
     stack  : info card above the image, description inlaid on the image bottom
     beside : info card on the image top edge, description card on its bottom edge
     sides  : info card left of the image, description card right of it
   No fullscreen, no chevrons; the image never moves with text length. */

@media (max-width: 767px) and (orientation: portrait) {
  .pop { --reel-h: 112px; --pad-top: 62px; --head-h: 76px; padding: var(--pad-top) 0 var(--reel-h); }
  .reel-thumb { height: 40px; }
  .reel-strip { max-height: 90px; }
}

@media (orientation: landscape) and (max-height: 500px) {
  .pop { --reel-h: 68px; --pad-top: 8px; --head-h: 64px; padding: var(--pad-top) 0 var(--reel-h); }
  .pop .pop-top { padding: 6px 12px; }
  .pop-x { top: 6px; right: 8px; width: 34px; height: 34px; }
  .reel-thumb { height: 30px; }
  .reel-strip { max-height: 60px; }
  .reel-film { padding: 14px 12px; background-size: 17px 12px; }
}

@media (max-width: 767px), (orientation: landscape) and (max-height: 500px) {
  .pop-nav { display: none; }
  .pop-top { display: block; }
  .pop-head { display: none; }
  .pop-top[hidden] { display: block; visibility: hidden; }
  .pop-frame img { cursor: default; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 12px 32px rgba(0, 0, 0, 0.18); }
  .pop-desc:empty { display: none; }
  .pop[data-nodesc] .pop-info { display: none; }

  .pop-meta { margin: 0 0 2px; color: var(--accent); }
  .pop-film { margin: 0; color: var(--muted); }

  .pop-top,
  .pop[data-mlayout="beside"] .pop-desc,
  .pop[data-mlayout="sides"] .pop-desc {
    box-sizing: border-box;
    padding: 10px 14px;
    overflow-y: auto;
    border-radius: 6px;
    text-shadow: none;
    cursor: default;
  }

  .pop-top { border: 1px solid #d3d3d8; background: #f3f3f5; }

  .pop[data-mlayout="beside"] .pop-desc,
  .pop[data-mlayout="sides"] .pop-desc {
    background: var(--inlay);
    color: #fff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    font: 15px/1.6 Georgia, "Times New Roman", serif;
  }

  /* stack */
  .pop[data-mlayout="stack"] .pop-frame {
    display: grid;
    grid-template-rows: var(--head-h) minmax(0, 1fr);
    align-self: stretch;
    justify-self: center;
    width: fit-content;
    max-width: 100vw;
    box-shadow: none;
  }

  .pop[data-mlayout="stack"] .pop-top {
    grid-row: 1;
    width: 0; /* don't widen the column past the image */
    min-width: 100%;
    margin-bottom: 12px;
  }

  .pop[data-mlayout="stack"] .pop-frame img {
    grid-row: 2;
    align-self: end;
    max-width: 100vw;
    max-height: calc(100dvh - var(--reel-h) - var(--pad-top) - var(--head-h));
  }

  .pop[data-mlayout="stack"] .pop-info {
    top: auto !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: auto !important;
    max-height: 40%;
    background: var(--inlay);
  }

  /* beside */
  .pop[data-mlayout="beside"] .pop-frame {
    display: grid;
    grid-template-columns: 100%;
    grid-template-rows: minmax(0, 1fr) auto minmax(0, 1fr);
    align-self: stretch;
    width: 100%;
    max-width: 100vw;
    box-shadow: none;
  }

  .pop[data-mlayout="beside"] .pop-top {
    grid-row: 1;
    align-self: end;
    max-height: 30dvh;
    margin: 0 12px 12px;
  }

  .pop[data-mlayout="beside"] .pop-frame img {
    grid-row: 2;
    justify-self: center;
    max-width: 100%;
    max-height: calc(100dvh - var(--reel-h) - var(--pad-top) - 160px);
  }

  .pop[data-mlayout="beside"] .pop-info { display: contents; }

  .pop[data-mlayout="beside"] .pop-desc {
    grid-row: 3;
    align-self: start;
    max-height: 30dvh;
    margin: 12px 12px 0;
  }

  /* sides: image centred, info and description cards stacked on one side (data-side) */
  .pop[data-mlayout="sides"] .pop-frame {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) auto auto minmax(0, 1fr);
    align-self: stretch;
    width: 100%;
    max-width: 100vw;
    box-shadow: none;
  }

  .pop[data-mlayout="sides"] .pop-frame img {
    grid-column: 2;
    grid-row: 1 / 5;
    align-self: center;
    max-width: 100%;
    max-height: calc(100dvh - var(--reel-h) - var(--pad-top));
  }

  .pop[data-mlayout="sides"] .pop-info { display: contents; }
  .pop[data-mlayout="sides"] .pop-top[hidden] { display: none; }

  .pop[data-mlayout="sides"] .pop-top,
  .pop[data-mlayout="sides"] .pop-desc {
    max-width: calc(100% - 24px);
    max-height: calc((100dvh - var(--reel-h) - var(--pad-top)) / 2 - 6px);
    margin: 0 12px;
  }

  .pop[data-mlayout="sides"] .pop-top { grid-row: 2; margin-bottom: 10px; }
  .pop[data-mlayout="sides"] .pop-desc { grid-row: 3; }

  .pop[data-mlayout="sides"][data-side="left"] .pop-top,
  .pop[data-mlayout="sides"][data-side="left"] .pop-desc { grid-column: 1; justify-self: end; }

  .pop[data-mlayout="sides"][data-side="right"] .pop-top,
  .pop[data-mlayout="sides"][data-side="right"] .pop-desc { grid-column: 3; justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  .strip.pre-l,
  .strip.pre-r { transform: none; opacity: 0; }
  .pop-frame img { transform: none; }
  .pop-frame { transition: none; }
}