/* photostori.es v2. Every photograph has a back.
   Mobile first, no frameworks, no web fonts. */

:root {
  --bg: #F6F1E7;        /* cream */
  --paper: #FFFCF7;     /* print border */
  --card: #FBF6EA;      /* back of the print */
  --ink: #2A2522;
  --muted: #6E655C;
  --stamp: #B5533C;     /* faded red postmark */
  --line: #E3D9C8;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, Menlo, "SF Mono", Consolas, "Liberation Mono", monospace;
  --measure: 640px;
  --print-max: 820px;
  --box-max: 1100px;
  --turn: 600ms;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 100%;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 1rem 3rem;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover, a:focus { text-decoration-color: var(--stamp); }

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  background: var(--line);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Small caps and labels */

.label,
.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.smallcaps {
  font-variant-caps: small-caps;
  letter-spacing: 0.05em;
}

/* Grain: the SVG filter lives in base.njk. Applied only to paper, never to the whole page. */

.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  filter: url(#grain);
  opacity: 0.06;
  mix-blend-mode: multiply;
}

/* Header and nav */

.site-header {
  max-width: var(--box-max);
  margin: 0 auto;
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--line);
}

.site-name {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}
.site-name a { text-decoration: none; }
.site-name a:hover { text-decoration: underline; }

.site-sub {
  margin: 0.15rem 0 0.9rem;
  color: var(--muted);
  font-size: 0.95rem;
  font-style: italic;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.site-nav a { text-decoration: none; color: var(--ink); padding-bottom: 2px; }
.site-nav a:hover { text-decoration: underline; text-decoration-color: var(--stamp); }
.site-nav a[aria-current="page"] {
  border-bottom: 1px solid var(--stamp);
}

/* Draft label */

.draft-label {
  display: inline-block;
  vertical-align: middle;
  margin: 0;
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--stamp);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transform: rotate(-2deg);
}

/* Home: the box */

.box {
  max-width: var(--box-max);
  margin: 0 auto;
  padding-top: 2rem;
}

.box-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2.5rem 2rem;
  grid-template-columns: 1fr;
}

.print-thumb {
  display: block;
  text-decoration: none;
  color: inherit;
}

.thumb-paper {
  position: relative;
  display: block;
  padding: 4% 4% 10%;
  background: var(--paper);
  box-shadow:
    0 1px 1px rgba(42, 37, 34, 0.06),
    0 6px 18px rgba(42, 37, 34, 0.10);
  transition: transform var(--turn) var(--ease), box-shadow var(--turn) var(--ease);
}
.thumb-paper img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.thumb-number,
.thumb-hint {
  position: absolute;
  bottom: 3%;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.thumb-number { left: 4%; }
.thumb-hint {
  right: 4%;
  color: var(--stamp);
  opacity: 0;
  transition: opacity 200ms ease;
}
.thumb-hint::before { content: "\2192\00A0"; }
.print-thumb:hover .thumb-paper,
.print-thumb:focus-visible .thumb-paper {
  transform: translateY(-2px) rotate(-0.4deg);
  box-shadow:
    0 1px 1px rgba(42, 37, 34, 0.06),
    0 12px 28px rgba(42, 37, 34, 0.14);
}
.print-thumb:hover .thumb-hint,
.print-thumb:focus-visible .thumb-hint { opacity: 1; }
@media (hover: none) {
  .thumb-hint { opacity: 0.8; }
}

.thumb-caption {
  margin: 0.8rem 0 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.4;
  font-variant-caps: small-caps;
  letter-spacing: 0.05em;
  text-align: center;
}
.thumb-caption .thumb-no {
  font-family: var(--mono);
  font-variant-caps: normal;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-right: 0.5em;
}
.thumb-caption .draft-label { margin-left: 0.4em; }

.is-draft .thumb-paper img { opacity: 0.85; }

/* Story page: the print */

.print {
  max-width: var(--print-max);
  margin: 2rem auto 0;
}

.print-stage { position: relative; }

/* Default: stacked. Front, a thin rule, then the back. Used when JS is off
   or the reader prefers reduced motion. Nothing is ever hidden here. */

.print-card {
  display: grid;
  grid-template-columns: 100%;
  row-gap: 3rem;
}

.print-face { position: relative; }

.print-front {
  padding: 4% 4% 9%;
  background: var(--paper);
  box-shadow:
    0 1px 1px rgba(42, 37, 34, 0.06),
    0 10px 30px rgba(42, 37, 34, 0.12);
}
.print-front figure { margin: 0; }
.print-front img { width: 100%; }
.front-number {
  position: absolute;
  right: 4%;
  bottom: 3%;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.print-back {
  position: relative;
  padding: 1.5rem 1.25rem 1.5rem;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow:
    0 1px 1px rgba(42, 37, 34, 0.06),
    0 10px 30px rgba(42, 37, 34, 0.12);
}
/* the thin rule between front and back in the stacked layout */
.print-back::before {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  top: -1.5rem;
  border-top: 1px solid var(--line);
}

.back-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  margin: 0 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.back-line .back-no { color: var(--ink); }

.back-title {
  margin: 0 0 1.25rem;
  padding-right: 6.5rem; /* room for the postmark */
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.005em;
}

.postmark {
  position: absolute;
  top: 2.4rem;
  right: 0.9rem;
  width: 6.4rem;
  height: auto;
  color: var(--stamp);
  opacity: 0.75;
  transform: rotate(-9deg);
  pointer-events: none;
}

.back-body {
  font-size: 1.0625rem;
  line-height: 1.65;
}
.back-body p { margin: 0 0 1.1em; }
.back-body p:first-child { font-style: italic; }
.back-body a { text-decoration-color: var(--stamp); }

.back-foot {
  margin-top: 1.5rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.back-foot p { margin: 0 0 0.35rem; }
.back-foot .label { margin-right: 0.5em; }
.back-foot a { color: var(--ink); text-decoration: none; }
.back-foot a:hover { text-decoration: underline; }

/* Controls under the print */

.print-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.turn {
  display: none; /* shown only when the flip is available */
  align-items: center;
  gap: 0.5em;
  margin: 0;
  padding: 0.55em 1em;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  text-transform: uppercase;
  cursor: pointer;
  touch-action: manipulation;
}
.turn:hover { background: var(--ink); color: var(--paper); }
.turn::before {
  content: "\21BB"; /* clockwise arrow */
  font-size: 1.1em;
  line-height: 1;
}
.turn[aria-pressed="true"]::before { content: "\21BA"; }

.share {
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
}
.share a { color: var(--ink); text-decoration: none; }
.share a:hover { text-decoration: underline; text-decoration-color: var(--stamp); }
.share .sep { margin: 0 0.5em; color: var(--line); }
.share-status { margin-left: 0.75em; color: var(--stamp); text-transform: none; }

.print-foot {
  max-width: var(--print-max);
  margin: 2.5rem auto 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.print-foot a { text-decoration: none; color: var(--muted); }
.print-foot a:hover { color: var(--ink); text-decoration: underline; }

/* The flip. Only with JS and only when motion is welcome. */

@media (prefers-reduced-motion: no-preference) {
  .print-stage { perspective: 2400px; }
  .print-card {
    row-gap: 0;
    transform-style: preserve-3d;
    transition: transform var(--turn) var(--ease);
  }
  .print-card.is-turned { transform: rotateY(180deg); }
  .print-face {
    grid-area: 1 / 1;
    align-self: start;
    max-height: var(--face-h, none);
    overflow: hidden;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    /* visibility switches at the midpoint of the turn, when the card is edge-on,
       so the turned-away face can never show through (some browsers paint
       filtered children even when the parent's backface is hidden) */
    transition:
      max-height var(--turn) var(--ease),
      visibility 0s linear calc(var(--turn) / 2);
  }
  .print-card:not(.is-turned) .print-back,
  .print-card.is-turned .print-front { visibility: hidden; }
  .print-back { transform: rotateY(180deg); }
  .print-back::before { display: none; }
  .turn { display: inline-flex; }
}

/* Plain pages (About, Send us a photograph) */

.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding-top: 2rem;
}
.page h1 {
  margin: 0 0 1.25rem;
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.2;
}
.page p { margin: 0 0 1.2em; font-size: 1.0625rem; }

/* Footer */

.site-footer {
  max-width: var(--box-max);
  margin: 3rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--ink); text-decoration: underline; }

/* Wider screens */

@media (min-width: 560px) {
  .box-list { grid-template-columns: repeat(2, 1fr); }
  .print-back { padding: 2rem 2.25rem 1.75rem; }
  .back-title { font-size: 1.75rem; }
  .postmark { top: 2.8rem; right: 1.5rem; width: 7.2rem; }
}

@media (min-width: 640px) {
  body { padding: 0 2rem 4rem; }
  .site-header { padding-top: 2.25rem; }
  .site-name { font-size: 1.75rem; }
  .page h1 { font-size: 2.1rem; }
  .box { padding-top: 3rem; }
  .print { margin-top: 3rem; }
}

@media (min-width: 900px) {
  .box-list { grid-template-columns: repeat(3, 1fr); gap: 3rem 2.5rem; }
}

/* Print to paper: the front on page one, the back on page two, card sized.
   This is the seed of the zines. */

@media print {
  @page { size: A5 landscape; margin: 10mm; }

  html, body { background: #fff; color: #000; padding: 0; margin: 0; }
  .site-header, .site-footer, .print-controls, .print-foot, .grain::after, .svg-defs { display: none !important; }

  .print { max-width: none; margin: 0; }
  .print-stage { perspective: none; }
  .print-card {
    display: block;
    transform: none !important;
    transition: none;
  }
  .print-face {
    position: static;
    visibility: visible !important;
    max-height: none !important;
    overflow: visible;
    transform: none !important;
    box-shadow: none;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .print-front {
    break-after: page;
    page-break-after: always;
    padding: 6mm 6mm 10mm;
    width: 190mm;
    height: 128mm;
    margin: 0 auto;
    background: var(--paper);
  }
  .print-front figure { height: 100%; display: flex; align-items: center; justify-content: center; }
  .print-front img { max-height: 108mm; width: auto; max-width: 100%; margin: 0 auto; }
  .front-number { right: 6mm; bottom: 3mm; }

  .print-back {
    break-before: page;
    page-break-before: always;
    width: 190mm;
    min-height: 128mm;
    margin: 0 auto;
    padding: 8mm 10mm;
    border: 1px solid var(--line);
    background: var(--card);
  }
  .print-back::before { display: none; }
  .back-body { font-size: 10.5pt; line-height: 1.5; }
  .back-title { font-size: 16pt; }
  .back-body a { text-decoration: none; color: #000; }
  .postmark { opacity: 0.8; }
}

/* The back: mark as a small label, one card height both sides, credits pinned to the bottom. */

.back-body p.back-mark {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1rem;
}

@media (prefers-reduced-motion: no-preference) {
  .print-face { align-self: stretch; max-height: none; }
  .print-back { display: flex; flex-direction: column; }
  .back-body { flex: 1 0 auto; }
}

/* The front: photograph centred in whatever height the card has. */

@media (prefers-reduced-motion: no-preference) {
  .print-front { display: flex; flex-direction: column; justify-content: center; }
}