:root {
  --paper: #f1ebe0;        /* off-white beige backdrop for the whole site */
  --card: #f8f4ec;
  --line: rgb(27 25 21 / 0.12);
  --ink: #1b1915;
  --ink-soft: #5a554c;
  --accent: #9b3d22;

  --serif: "EB Garamond", Garamond, "Times New Roman", serif;
  --sans: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  /* How a frame looks before it "develops": overexposed and washed out. */
  --undeveloped: brightness(1.55) saturate(0.35) contrast(0.85);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

html.is-landing body {
  overflow: hidden;
}

/* ---------- Stage ---------- */

.loader {
  position: fixed;
  inset: 0;
  z-index: 40;
  overflow: hidden;
  background: var(--paper);
  transition: background-color 500ms ease;
}

html.no-landing .loader {
  display: none;
}

.loader.is-enterable {
  cursor: pointer;
}

/* Leaving: the paper turns clear so the About page shows through as the tiles fold away. */
.loader.is-leaving {
  background-color: transparent;
  pointer-events: none;
  cursor: auto;
}

/* Film grain over everything, very faint. */
.loader::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.09;
  mix-blend-mode: multiply;
  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='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  transition: opacity 600ms ease;
}

.loader.is-leaving::after {
  opacity: 0;
}

/* ---------- Mosaic ---------- */

.mosaic {
  position: absolute;
  inset: 0;
  will-change: transform;
}

/* Each tile is positioned by loader.js. Tiles wipe in like a shutter:
   even columns rise from the bottom, odd columns drop from the top. */
.tile {
  position: absolute;
  overflow: hidden;
  background: #e6dfd2;
  clip-path: inset(100% 0 0 0);
  transition:
    clip-path 1000ms var(--ease-out),
    background-color 800ms ease;
}

.tile[data-dir="down"] {
  clip-path: inset(0 0 100% 0);
}

.tile.is-in {
  clip-path: inset(0);
}

/* On the way out they fold shut the opposite way, rippling out from the center. */
.loader.is-leaving .tile {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 650ms var(--ease-in) var(--out, 0ms);
}

.loader.is-leaving .tile[data-dir="down"] {
  clip-path: inset(100% 0 0 0);
}

/* A photo that never loaded fades back into the paper. */
.tile.is-empty {
  background-color: var(--paper);
}

/* Photos "develop" inside their frame: overexposed and oversized, then settling. */
.tile__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  opacity: 0;
  clip-path: inset(0);
  transform: scale(1.16);
  filter: var(--undeveloped);
  transition:
    opacity 900ms ease-out,
    transform 1600ms var(--ease-out),
    filter 1300ms ease-out,
    clip-path 1100ms var(--ease-out);
}

.tile.is-in .tile__img.is-loaded {
  opacity: 1;
  transform: none;
  filter: none;
}

/* A fresh frame swapping into a tile that's already showing. */
.tile.is-in .tile__img.is-loaded.is-incoming {
  clip-path: inset(100% 0 0 0);
  transform: scale(1.16);
  filter: var(--undeveloped);
}

.tile.is-in[data-dir="down"] .tile__img.is-loaded.is-incoming {
  clip-path: inset(0 0 100% 0);
}

/* ---------- Vignette: a soft shadow pool that lifts the polaroid off the mosaic ---------- */

.vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 50% 58% at 50% 50%, rgb(12 10 8 / 0.42) 0%, rgb(12 10 8 / 0.16) 60%, rgb(12 10 8 / 0) 100%),
    rgb(12 10 8 / 0.08);
  opacity: 0;
  transition: opacity 1400ms ease;
}

.loader.is-polaroid .vignette {
  opacity: 1;
}

.loader.is-leaving .vignette {
  opacity: 0;
  transition-duration: 500ms;
}

/* ---------- Polaroid ---------- */

/* Built to Instax Mini proportions: a 54×86 card around a 46×62 photo,
   with the thick strip at the bottom where the caption is written.
   --pw (card width) sizes everything inside it. */
.polaroid {
  --pw: min(70vh * 0.628, 100vw - 64px, 440px);
  width: var(--pw);
  aspect-ratio: 54 / 86;
  padding: calc(var(--pw) * 0.074) calc(var(--pw) * 0.074) 0;
  display: flex;
  flex-direction: column;
  background: #fbfaf5;
  box-shadow:
    0 1px 2px rgb(0 0 0 / 0.2),
    0 30px 60px -14px rgb(0 0 0 / 0.6);
}

/* On the landing it drops onto the center of the mosaic. --tilt is randomized per visit. */
.loader .polaroid {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg) scale(1.12);
  transition:
    opacity 600ms ease,
    transform 1400ms var(--ease-out);
}

.loader .polaroid.is-shown {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(var(--tilt, -2.5deg));
}

/* Like a real Instax, the photo starts as a pale blank and develops. */
.polaroid__photo {
  position: relative;
  overflow: hidden;
  aspect-ratio: 46 / 62;
  background: #d8d6cf;
}

.polaroid__img {
  position: absolute;
  max-width: none;  /* sized larger than its window on purpose, to crop the Instax border */
  user-select: none;
  opacity: 0;
  filter: brightness(2) saturate(0) contrast(0.55);
  transition:
    opacity 1400ms ease,
    filter 3400ms ease-out;
}

.polaroid.is-shown .polaroid__img.is-loaded {
  opacity: 1;
  filter: none;
}

.polaroid__caption {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 4% calc(var(--pw) * 0.02);
  text-align: center;
  color: var(--ink);
}

.polaroid__name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: calc(var(--pw) * 0.108);
  line-height: 1.05;
  letter-spacing: -0.005em;
  white-space: nowrap;
  padding: 0 0.1em;
}

/* The caption is written once the card lands. Hidden only when JS runs, so it's never lost. */
.js .polaroid__name {
  -webkit-mask-image: linear-gradient(90deg, #000 45%, transparent 55%);
          mask-image: linear-gradient(90deg, #000 45%, transparent 55%);
  -webkit-mask-size: 220% 100%;
          mask-size: 220% 100%;
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  -webkit-mask-position: 100% 0;
          mask-position: 100% 0;
  transition:
    -webkit-mask-position 1300ms var(--ease-in-out),
    mask-position 1300ms var(--ease-in-out);
}

.polaroid.is-written .polaroid__name {
  -webkit-mask-position: 0 0;
          mask-position: 0 0;
}

/* ---------- Progress and enter ---------- */

.progress,
.enter {
  position: absolute;
  bottom: 16px;
  z-index: 2;
  padding: 8px 12px 7px;
  background: var(--paper);
  color: var(--ink);
  font: 500 11px/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0;
  transition:
    opacity 600ms ease,
    transform 600ms var(--ease-out);
}

.progress {
  left: 16px;
  font-variant-numeric: tabular-nums;
}

.loader.is-started .progress {
  opacity: 1;
}

.loader.is-ready .progress,
.loader.is-enterable .progress {
  opacity: 0;
}

.enter {
  left: 50%;
  bottom: 24px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  pointer-events: none;
  transform: translate(-50%, 8px);
}

.loader.is-enterable .enter {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.enter:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.loader.is-leaving .progress,
.loader.is-leaving .enter {
  opacity: 0;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .tile,
  .tile__img,
  .vignette,
  .polaroid,
  .polaroid__img,
  .polaroid__name,
  .progress,
  .enter {
    transition: none !important;
  }
}