/* ============================================================
   CONCEPT A, "THE LIGHTBOX" — depthpaper's darkroom skin.
   Loaded after kit/base.css (pinned, never edited) and the site
   sheets, so everything here is an override: tokens first, then
   the film strip (header, readouts, contact sheet), the lightbox
   surfaces (page, tool panel), phone frames around the canvases,
   grease-pencil marks and the loupe.

   Rules this file keeps:
   - Above 480px the size tables keep the kit's computed layout
     (544px floor, 8px 11.2px cells, sizes at 0.86em, static caption);
     tests/browser-smoke.js pins those numbers.
   - Phone nav stays one 44px row that scrolls; nothing here pads it
     vertically.
   - Motion is decoration only and stops under prefers-reduced-motion
     (the kit's rule zeroes durations; the final frame is the at-rest
     look).
   - Fonts are self-hosted (fonts/, SIL OFL, licence files beside
     them) and use font-display: optional, so a late font never
     reflows the page.
   ============================================================ */

@font-face {
  font-family: "Space Mono";
  src: url(fonts/space-mono-400.woff2) format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: optional;
}
@font-face {
  font-family: "Space Mono";
  src: url(fonts/space-mono-700.woff2) format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: optional;
}
@font-face {
  font-family: "Gochi Hand";
  src: url(fonts/gochi-hand-400.woff2) format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: optional;
}

/* ---------- Tokens: the lit lightbox (light) ---------- */
:root {
  --paper: #f4eedf;          /* lightbox diffuser, lit */
  --glow: #fffdf5;           /* the hot centre of the glass */
  --panel: #fffcf4;          /* photo paper */
  --ink: #1e1a15;
  --ink-soft: #574d3e;
  --line: #ded3bd;
  --line-strong: #887d69;    /* >= 3:1 on paper and panel: control edges */
  --accent: #ad2318;         /* grease-pencil red, also the link colour */
  --accent-soft: #f7e2da;
  --focus: #ad2318;
  --pass: #1d6f3a;
  --pass-soft: #e0f0e4;
  --fail: #b3261e;
  --fail-soft: #fbe7e3;
  --warn: #8a5300;
  --readout-bg: #17130f;     /* film base */
  --readout-ink: #f5eddd;
  --readout-dim: #b9aa8f;

  --film: #17130f;
  --film-hi: #2a241d;
  --edge: #ffb238;           /* edge-print amber on film */
  --sprocket: #f4eedf;       /* light through the sprocket holes */
  --grease: #c22a1d;         /* marks drawn on the glass */
  --alu-1: #d9d5cc;          /* lightbox frame, brushed */
  --alu-2: #a9a49a;
  --bezel: #16130f;
  --grid: rgba(115, 92, 50, 0.07);
  --shadow: rgba(48, 34, 14, 0.22);
  --lb-hot: #ffffff;
  --lb-edge: #f3e9d2;
  --lb-halo: rgba(255, 232, 178, 0.95);

  --mono: "Space Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --display: "Space Mono", ui-monospace, Menlo, Consolas, monospace;
  --hand: "Gochi Hand", "Segoe Print", "Bradley Hand", cursive;
}

/* ---------- Tokens: the darkroom (dark) ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #14110e;
    --glow: #2a2119;
    --panel: #1f1a15;
    --ink: #f3ebdc;
    --ink-soft: #c4b59c;
    --line: #3b3229;
    --line-strong: #8c7d66;
    --accent: #ff9180;       /* safelight red, lifted for dark text */
    --accent-soft: #3c1f19;
    --focus: #ffb238;
    --pass: #6fd894;
    --pass-soft: #12301d;
    --fail: #ff8d85;
    --fail-soft: #3a1714;
    --warn: #ffbf5e;
    --readout-bg: #0c0a08;
    --readout-ink: #f5eddd;
    --readout-dim: #b9aa8f;
    --film: #0c0a08;
    --film-hi: #241e18;
    --sprocket: #2b211a;
    --grease: #ff6a55;
    --alu-1: #5a554d;
    --alu-2: #36322c;
    --bezel: #050403;
    --grid: rgba(255, 128, 96, 0.05);
    --shadow: rgba(0, 0, 0, 0.55);
    --lb-hot: #fbf0d6;
    --lb-edge: #d9c8a5;
    --lb-halo: rgba(255, 190, 120, 0.28);
  }
}

/* ---------- The page is the lightbox ---------- */
body {
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse 80% 55% at 50% 0%, var(--glow) 0%, transparent 70%),
    repeating-linear-gradient(0deg, var(--grid) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, var(--grid) 0 1px, transparent 1px 48px);
}
@media (prefers-color-scheme: dark) {
  /* The safelight: a low red glow from the top corner. */
  body {
    background-image:
      radial-gradient(ellipse 70% 45% at 85% 0%, rgba(214, 52, 30, 0.22) 0%, transparent 70%),
      radial-gradient(ellipse 80% 55% at 40% 0%, var(--glow) 0%, transparent 70%),
      repeating-linear-gradient(0deg, var(--grid) 0 1px, transparent 1px 48px),
      repeating-linear-gradient(90deg, var(--grid) 0 1px, transparent 1px 48px);
  }
}

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

h1, h2, h3, .brand { font-family: var(--display); }

h1 {
  font-weight: 700;
  font-size: clamp(1.45rem, 3.6vw, 2.35rem);
  letter-spacing: -0.035em;
  line-height: 1.12;
}
/* A grease-pencil swoosh under each page title. */
h1::after {
  content: "";
  display: block;
  width: 5.5rem;
  height: 0.55rem;
  margin-top: 0.3rem;
  border-bottom: 0.22rem solid var(--grease);
  border-radius: 0 0 60% 40% / 0 0 100% 100%;
  transform: rotate(-1.6deg);
  opacity: 0.85;
}
h2 {
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}
h3 { font-weight: 700; letter-spacing: -0.01em; }

.eyebrow { color: var(--ink-soft); letter-spacing: 0.16em; }
/* A small frame-counter triangle, as printed on film edges. */
.eyebrow::before { content: "\25B8\00a0"; color: var(--accent); }

/* ---------- Header: a strip of 35mm film ---------- */
.site-header {
  position: relative;
  background-color: var(--film);
  border-bottom: 0;
  padding: 0.7rem 0;
  box-shadow: 0 6px 18px -10px var(--shadow);
}
.site-header::before,
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 0.42rem;
  background-image: linear-gradient(90deg, transparent 0 0.55rem, var(--sprocket) 0.55rem 1.1rem, transparent 1.1rem);
  background-size: 1.65rem 100%;
  background-repeat: repeat-x;
  opacity: 0.9;
  pointer-events: none;
}
.site-header::before { top: 0.2rem; }
.site-header::after { bottom: 0.2rem; }
.site-header .inner { align-items: center; padding-top: 0.25rem; padding-bottom: 0.25rem; }
.brand {
  color: #f5eddd;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.brand .brand-mark { vertical-align: middle; }
.site-nav { gap: 0.9rem; }
.site-nav a {
  color: #e2d6c0;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.site-nav a:hover { color: #fff; border-bottom-color: var(--edge); }
.site-nav a[aria-current="page"] { color: var(--edge); border-bottom-color: var(--edge); }
.site-header :focus-visible { outline-color: var(--edge); }

/* ---------- Readout: edge print on a film strip ---------- */
.readout {
  position: relative;
  background-color: var(--film);
  background-image:
    linear-gradient(90deg, transparent 0 0.5rem, var(--sprocket) 0.5rem 0.95rem, transparent 0.95rem),
    linear-gradient(90deg, transparent 0 0.5rem, var(--sprocket) 0.5rem 0.95rem, transparent 0.95rem);
  background-size: 1.45rem 0.3rem, 1.45rem 0.3rem;
  background-position: 0 0.22rem, 0 calc(100% - 0.22rem);
  background-repeat: repeat-x;
  padding: 0.95rem 0.9rem;
  border-radius: 2px;
  box-shadow: 0 8px 18px -12px var(--shadow);
}
.readout .r-label { color: var(--readout-dim); }
.readout .r-value { color: var(--edge); font-weight: 700; }
.readout .r-value.pass { color: #6fe39a; }
.readout .r-value.fail { color: #ff958c; }

/* ---------- Buttons and fields ---------- */
.btn {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 999px;
  padding: 0.6rem 1.15rem;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.25);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn:active { transform: translateY(2px); box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25); }
.btn.secondary { box-shadow: 0 2px 0 var(--line); }
select, input[type="text"], input[type="number"], .gen-controls input[type="file"] {
  border-radius: 6px;
  border-color: var(--line-strong);
}

/* ---------- Tool panel: the lightbox itself, in its brushed frame ---------- */
.tool-panel {
  position: relative;
  border: 0;
  border-radius: 14px;
  background-color: var(--panel);
  background-image:
    radial-gradient(ellipse 90% 70% at 50% 35%, var(--glow) 0%, transparent 75%),
    repeating-linear-gradient(0deg, var(--grid) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, var(--grid) 0 1px, transparent 1px 32px);
  box-shadow:
    0 0 0 1px var(--alu-2),
    0 0 0 7px var(--alu-1),
    0 0 0 8px var(--alu-2),
    0 22px 38px -18px var(--shadow);
  margin: 0.6rem 0 1.75rem;
}
.tool-panel .readout { margin-top: 0; }

/* Notes: index cards taped to the glass. */
.note {
  border: 1px solid var(--line);
  border-left: 4px solid var(--grease);
  border-radius: 4px;
  box-shadow: 0 6px 14px -10px var(--shadow);
}

/* ---------- Frames around the generators' live canvases ----------
   A generic slab: dark frame, rounded glass. No maker's camera, notch or
   button layout, on purpose. The frame is a box-shadow ring drawn OUTSIDE
   the canvas, so it never changes the canvas's size: the pair previews keep
   their shared scale under max-width: 42vw. */
#preview,
.pair-preview canvas {
  --frame: 0.55rem;
  border: 0;
  border-radius: 1.05rem;
  background: var(--panel);
  box-shadow:
    0 0 0 var(--frame) var(--bezel),
    0 0 0 calc(var(--frame) + 1px) #4d463d,
    0 18px 28px -14px var(--shadow),
    0 0 30px 2px var(--glow);
}
/* The checker stage stays a plain rounded rectangle, not a device outline
   (spec §3, and the checker's own FAQ): a thin edge, lit like the glass.
   Its 1px border is the one main has, so the stage keeps the panel's ratio. */
.check-stage {
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 14px 24px -14px var(--shadow), 0 0 30px 2px var(--glow);
}

.preview-wrap,
.pair-preview { position: relative; }

/* Grease-pencil tags drawn beside a frame (decorative, aria-hidden in markup). */
.grease-tag {
  display: block;
  font-family: var(--hand);
  font-size: 1.15rem;
  line-height: 1.1;
  color: var(--accent);
  transform: rotate(-3deg);
  text-align: center;
  white-space: nowrap;
}

/* ---------- Swatches: colour gels on the glass ---------- */
.swatch {
  border-radius: 6px;
  padding: 0.3rem;
  background: var(--panel);
  box-shadow: 0 4px 10px -6px var(--shadow);
  transition: transform 0.15s ease;
}
/* Keep the touch spacing after this skin overrides the base swatch padding. */
@media (pointer: coarse) {
  .swatch { padding: 0.55rem 0.3rem; min-height: var(--tap); }
}
.swatch span:first-child { border-radius: 3px 0 0 3px; }
.swatch span:last-child { border-radius: 0 3px 3px 0; }
.swatch:hover { transform: translateY(-2px) rotate(-1.5deg); }
.swatch[aria-pressed="true"] {
  outline: 3px solid var(--grease);
  outline-offset: 2px;
  transform: rotate(-1.5deg);
}

/* ---------- Your-size panel: a 35mm slide mount ---------- */
.your-size-panel {
  position: relative;
  background: var(--panel);
  border-radius: 10px;
  padding: 0.85rem 1rem 0.6rem 4.2rem;
  box-shadow:
    0 0 0 1px var(--line),
    0 12px 22px -14px var(--shadow);
}
/* The mount's window, with a little phone in it. */
.your-size-panel::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 0.95rem;
  width: 2.1rem;
  height: 3.9rem;
  border: 0.22rem solid var(--bezel);
  border-radius: 0.55rem;
  background:
    radial-gradient(circle at 30% 25%, #ff9a6b 0 20%, transparent 55%),
    radial-gradient(circle at 75% 70%, #6b7cff 0 22%, transparent 60%),
    linear-gradient(160deg, #ffd38a, #d8507a 55%, #3c2a7a);
  box-shadow: 0 6px 12px -6px var(--shadow);
}
.your-size-panel .your-size-line { font-size: 0.98rem; }
.your-size-panel code {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05em;
  background: var(--accent-soft);
  color: var(--ink);
  padding: 0.05em 0.35em;
  border-radius: 4px;
}
.your-size-panel .size-actions { gap: 0 1.1rem; }
.your-size-panel .size-actions a { font-weight: 700; }

/* ---------- Home: the hero lightbox ---------- */
.lb-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 1rem 2rem;
  align-items: start;
}
.lb-hero .lede { margin-bottom: 1rem; }
.lb-art {
  margin: 0;
  position: relative;
}
.lb-art svg { display: block; width: 100%; height: auto; }

/* SVG art colours, themed. */
.lb-art .alu { fill: var(--alu-1); stroke: var(--alu-2); stroke-width: 2; }
.lb-art .glass { fill: url(#lb-glow); }
.lb-art .gridline { stroke: var(--grid); stroke-width: 1; }
.lb-art .bezel { fill: var(--bezel); }
.lb-art .mount { fill: #fbf7ec; stroke: #d7ccb4; }
.lb-art .crop { stroke: #c22a1d; stroke-width: 3; fill: none; stroke-linecap: round; }
.lb-art .hand { font-family: var(--hand); fill: #b3261e; }
.lb-art .mono { font-family: var(--mono); font-weight: 700; fill: var(--ink); }
.lb-art .loupe-rim { fill: none; stroke: #121010; stroke-width: 10; }
.lb-art .loupe-glint { fill: none; stroke: rgba(255, 255, 255, 0.75); stroke-width: 3; stroke-linecap: round; }
.lb-art .shadow { fill: var(--shadow); }

/* The light table warms up once on load: a short flicker, then steady. */
.lb-art .glass-wrap { animation: lb-warm 1.1s ease-out 0.15s both; }
@keyframes lb-warm {
  0% { opacity: 0.35; }
  18% { opacity: 1; }
  26% { opacity: 0.55; }
  40% { opacity: 1; }
  100% { opacity: 1; }
}
/* The loupe drifts slowly across the big phone, as if being slid by hand. */
.lb-art .loupe { animation: lb-slide 9s ease-in-out 1.2s infinite alternate; transform-box: view-box; }
@keyframes lb-slide {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-14px, 22px); }
}

/* ---------- Contact sheet (home and guides hub tool grids) ---------- */
.tool-grid {
  counter-reset: frame;
  background-color: var(--film);
  background-image:
    linear-gradient(90deg, transparent 0 0.55rem, var(--sprocket) 0.55rem 1.1rem, transparent 1.1rem),
    linear-gradient(90deg, transparent 0 0.55rem, var(--sprocket) 0.55rem 1.1rem, transparent 1.1rem);
  background-size: 1.65rem 0.42rem, 1.65rem 0.42rem;
  background-position: 0 0.45rem, 0 calc(100% - 0.45rem);
  background-repeat: repeat-x;
  padding: 2.1rem 0.9rem 1.9rem;
  gap: 1.6rem 0.9rem;
  border-radius: 3px;
  box-shadow: 0 18px 32px -18px var(--shadow);
  transform: rotate(-0.4deg);
}
.tool-card {
  position: relative;
  counter-increment: frame;
  background-color: #fbf7ec;
  color: #1e1a15;
  border: 0;
  border-radius: 2px;
  padding: 5.1rem 0.95rem 1rem;
  background-image: var(--thumb, linear-gradient(135deg, #ffcf8a, #e0527a 55%, #40307e));
  background-size: calc(100% - 1rem) 4.2rem;
  background-position: 0.5rem 0.5rem;
  background-repeat: no-repeat;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-size 0.25s ease;
}
/* Frame numbers in edge-print amber, above each frame. */
.tool-card .eyebrow::before {
  content: counter(frame) "A\00a0\25B8\00a0";
  position: absolute;
  top: -1.35rem;
  left: 0.1rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--edge);
}
.tool-card .eyebrow { color: #574d3e; }
.tool-card a.title { color: #1e1a15; font-family: var(--display); letter-spacing: -0.02em; }
.tool-card a.title::after { content: ""; position: absolute; inset: 0; }
.tool-card a.title:hover { color: #ad2318; }
.tool-card a.title:focus-visible { outline: none; }
.tool-card:focus-within { outline: 3px solid var(--edge); outline-offset: 3px; }
.tool-card p { color: #574d3e; }

/* The loupe: hovering or focusing a frame lifts it and magnifies its exposure. */
.tool-card::before {
  content: "";
  position: absolute;
  right: -0.6rem;
  top: -0.6rem;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  border: 0.42rem solid #121010;
  background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.7) 0 12%, rgba(255, 255, 255, 0.08) 13% 100%);
  box-shadow: 0 8px 14px -4px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: scale(0.6) rotate(-20deg);
  transition: opacity 0.18s ease, transform 0.22s ease;
  pointer-events: none;
  z-index: 2;
}
.tool-card:hover,
.tool-card:focus-within {
  transform: translateY(-4px) rotate(0.8deg) scale(1.02);
  box-shadow: 0 16px 24px -12px rgba(0, 0, 0, 0.6);
  background-size: calc(100% - 1rem) 4.2rem;
  z-index: 1;
}
.tool-card:hover::before,
.tool-card:focus-within::before { opacity: 1; transform: none; }

/* The first frame is this month's pick: circled in grease pencil. */
.tool-card:first-child::after {
  content: "";
  position: absolute;
  inset: -0.55rem -0.45rem;
  border: 0.2rem solid var(--grease);
  border-radius: 48% 52% 46% 54% / 55% 45% 55% 45%;
  transform: rotate(-2deg);
  pointer-events: none;
}

/* Each frame's exposure is its own small mesh gradient. */
.tool-card:nth-child(1)  { --thumb: radial-gradient(circle at 25% 30%, #ffe08a 0 18%, transparent 50%), radial-gradient(circle at 80% 70%, #ff6b8b 0 20%, transparent 55%), linear-gradient(120deg, #ff9f5a, #8a3fbf); }
.tool-card:nth-child(2)  { --thumb: radial-gradient(circle at 70% 30%, #9ff0ff 0 15%, transparent 50%), radial-gradient(circle at 20% 80%, #4053ff 0 20%, transparent 60%), linear-gradient(160deg, #46d1c4, #1d2a6e); }
.tool-card:nth-child(3)  { --thumb: linear-gradient(90deg, #ffb2c8 0 50%, #a6c8ff 50% 100%); }
.tool-card:nth-child(4)  { --thumb: radial-gradient(circle at 30% 60%, #ffd36b 0 18%, transparent 55%), linear-gradient(200deg, #2f8a5b, #0f3b3a 70%, #d6f07a); }
.tool-card:nth-child(5)  { --thumb: repeating-linear-gradient(0deg, transparent 0 0.9rem, rgba(255, 255, 255, 0.55) 0.9rem 1.05rem), linear-gradient(180deg, #343a8a, #b06ad6); }
.tool-card:nth-child(6)  { --thumb: radial-gradient(circle at 20% 50%, #ff5a4a 0 14%, transparent 15%), radial-gradient(circle at 45% 50%, #ffb238 0 14%, transparent 15%), radial-gradient(circle at 70% 50%, #4ab0ff 0 14%, transparent 15%), linear-gradient(#f2ead8, #e4d8bf); }
.tool-card:nth-child(7)  { --thumb: repeating-linear-gradient(90deg, #1e1a15 0 2px, transparent 2px 1.6rem), linear-gradient(180deg, #ffe3a6, #ff8a5c); }
.tool-card:nth-child(8)  { --thumb: repeating-linear-gradient(90deg, #1e1a15 0 2px, transparent 2px 1.25rem), linear-gradient(180deg, #b8f0c8, #3ba070); }
.tool-card:nth-child(9)  { --thumb: radial-gradient(circle at 60% 40%, #fff 0 8%, transparent 40%), linear-gradient(135deg, #3a3a3a, #8a8a8a 50%, #d9d9d9); }
.tool-card:nth-child(10) { --thumb: radial-gradient(circle at 80% 20%, #ffd0e0 0 18%, transparent 55%), linear-gradient(45deg, #ffef9a, #ff9ab8 50%, #8ad0ff); }
.tool-card:nth-child(n+11) { --thumb: linear-gradient(135deg, #ffcf8a, #e0527a 55%, #40307e); }

.lb-sheet-label {
  font-family: var(--hand);
  font-size: 1.35rem;
  color: var(--accent);
  margin: 1.6rem 0 -0.4rem 0.3rem;
  transform: rotate(-1.5deg);
  transform-origin: left;
}

/* ---------- Size charts: a negative sleeve on the light table ---------- */
.prose table {
  background: var(--panel);
  border-color: var(--line);
  box-shadow: 0 14px 26px -18px var(--shadow);
}
.prose thead th {
  background: var(--film);
  color: var(--edge);
  border-top: 0;
}
.prose thead th .th-sort:hover { color: #fff; }
.prose caption {
  font-family: var(--hand);
  font-size: 1.12rem;
  line-height: 1.3;
  color: var(--ink-soft);
  text-align: left;
  padding: 0 0 0.45rem;
}
.prose td code {
  font-family: var(--mono);
  font-weight: 700;
  background: transparent;
  color: var(--ink);
  display: inline-block;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.prose tbody tr:nth-child(even) td { background-color: rgba(120, 96, 52, 0.05); }
/* Loupe hover: the row brightens and its size swells under the glass. */
.prose tbody tr:hover td { background-color: var(--accent-soft); }
.prose tbody tr:hover td code {
  transform: scale(1.12);
  background: var(--panel);
  border-radius: 999px;
  box-shadow: 0 0 0 0.18rem #121010, 0 6px 12px -4px rgba(0, 0, 0, 0.45);
}
.prose .size-actions a { font-weight: 700; }
.table-filter input { border-radius: 999px; }

/* The iPhone lineup: every resolution, to scale, laid on the glass. */
.lb-lineup {
  margin: 0 0 1.25rem;
  padding: 0.9rem 0.75rem 0.5rem;
  border-radius: 12px;
  background-color: var(--panel);
  background-image:
    radial-gradient(ellipse 80% 80% at 50% 40%, var(--glow) 0%, transparent 80%),
    repeating-linear-gradient(0deg, var(--grid) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, var(--grid) 0 1px, transparent 1px 24px);
  box-shadow:
    0 0 0 1px var(--alu-2),
    0 0 0 6px var(--alu-1),
    0 0 0 7px var(--alu-2),
    0 16px 26px -16px var(--shadow);
  max-width: 46rem;
}
.lb-lineup svg { display: block; width: 100%; height: auto; }
.lb-lineup .bezel { fill: var(--bezel); }
.lb-lineup .px { font-family: var(--mono); font-weight: 700; fill: var(--ink); }
.lb-lineup .hand { font-family: var(--hand); fill: var(--grease); }
.lb-lineup .phone { transition: transform 0.2s ease; transform-box: fill-box; transform-origin: 50% 100%; }
.lb-lineup .phone:hover { transform: translateY(-4px) rotate(-2deg); }
.lb-lineup figcaption {
  font-family: var(--hand);
  font-size: 1.1rem;
  color: var(--accent);
  text-align: right;
  margin: 0.1rem 0.25rem 0;
}

/* ---------- FAQ: negatives in glassine sleeves ---------- */
.faq details {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  box-shadow: 0 6px 14px -12px var(--shadow);
}
.faq summary::before { color: var(--grease); font-weight: 700; }
.faq details[open] { border-left: 4px solid var(--grease); }

/* ---------- Related: slide-mount chips ---------- */
.related li a {
  border-radius: 6px;
  border-color: var(--line-strong);
  background: var(--panel);
  box-shadow: 0 3px 0 var(--line);
}
.related li a:hover { border-color: var(--accent); }

/* ---------- Gallery: 35mm slides in card mounts ---------- */
.gallery-card {
  border: 0;
  border-radius: 10px;
  background: #fbf7ec;
  color: #1e1a15;
  padding: 0.7rem 0.7rem 0.6rem;
  box-shadow: 0 0 0 1px #d7ccb4, 0 14px 22px -14px var(--shadow);
  transition: transform 0.18s ease;
}
.gallery-card:nth-child(3n+1) { transform: rotate(-0.8deg); }
.gallery-card:nth-child(3n+2) { transform: rotate(0.6deg); }
.gallery-card:hover,
.gallery-card:focus-within { transform: translateY(-3px) rotate(0deg) scale(1.02); }
.gallery-thumb {
  border: 0.35rem solid #17130f;
  border-radius: 6px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}
.gallery-name { font-family: var(--display); letter-spacing: -0.02em; color: #1e1a15; }
.gallery-meta { color: #574d3e; }
.gallery-card a:not(.btn) { color: #ad2318; }
.gallery-card .btn.secondary { background: #fffcf4; color: #1e1a15; border-color: #887d69; }

/* ---------- Pair and checker bits ---------- */
.pair-tag, .chip-label {
  font-family: var(--hand);
  font-size: 1.15rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--accent);
}
.band { border-color: var(--grease); }
.band-label { font-family: var(--mono); background: var(--panel); color: var(--ink); }
.color-chip { border-radius: 50%; box-shadow: 0 3px 8px -4px var(--shadow); }

/* ---------- Footer: the darkroom bench ---------- */
.site-footer {
  background: var(--film);
  border-top: 0;
  color: #d6c9b1;
  position: relative;
}
.site-footer .inner { color: #d6c9b1; padding-top: 1.5rem; }
.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0.3rem;
  height: 0.42rem;
  background-image: linear-gradient(90deg, transparent 0 0.55rem, var(--sprocket) 0.55rem 1.1rem, transparent 1.1rem);
  background-size: 1.65rem 100%;
  background-repeat: repeat-x;
  opacity: 0.9;
}
.site-footer a { color: #f1e6d2; }
.site-footer a:hover { color: #fff; }
.site-footer .promise { color: var(--edge); }
.site-footer :focus-visible { outline-color: var(--edge); }

/* ---------- Maker: the lightbox with a phone on it ---------- */
.maker-page .tool-panel { padding: 1rem 1rem 1.1rem; }
.maker-start .preview-wrap {
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}
.maker-page .controls .btn:not(.secondary) { font-size: 1.05rem; padding: 0.7rem 1.4rem; }

/* ---------- Wide screens ---------- */
@media (min-width: 900px) {
  .lb-hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; }
  .lb-hero .lb-art { margin-top: -0.5rem; }
}

/* ---------- Phones ---------- */
@media (max-width: 760px) {
  .lb-hero { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 480px) {
  .tool-card:first-child::after { border-radius: 14px 22px 16px 24px / 20px 14px 24px 16px; transform: rotate(-1deg); }
  .site-header { padding: 0.55rem 0; }
  .site-header .inner { padding-top: 0.15rem; padding-bottom: 0.15rem; row-gap: 0; }
  .site-nav { gap: 1rem; }
  .site-nav a:focus-visible { outline-offset: -3px; }
  main.wrap { padding-top: 1.1rem; }
  .lede { font-size: 0.95rem; line-height: 1.55; }
  .tool-grid { transform: none; padding-left: 0.6rem; padding-right: 0.6rem; }
  .your-size-panel { padding-left: 3.6rem; }
  .your-size-panel::before { left: 0.8rem; width: 1.8rem; height: 3.4rem; }
  .tool-panel { box-shadow: 0 0 0 1px var(--alu-2), 0 0 0 5px var(--alu-1), 0 0 0 6px var(--alu-2), 0 18px 30px -18px var(--shadow); }
  #preview, .pair-preview canvas { --frame: 0.4rem; border-radius: 0.75rem; }
  .grease-tag { font-size: 1rem; }
  .prose caption { font-size: 1.02rem; }
}

/* Gradient stops in the hero glass follow the theme. */
.lb-art .lb-s-hot { stop-color: var(--lb-hot); }
.lb-art .lb-s-edge { stop-color: var(--lb-edge); }
.lb-art svg { filter: drop-shadow(0 0 22px var(--lb-halo)); }
.lb-art .gridline { fill: none; }
.lb-art .hand-light { font-family: var(--hand); fill: #fff8e8; }

/* The readout sits above the phone frame's glow. */
.readout { z-index: 1; }

/* ---------- Maker: controls fill the column beside the phone ----------
   .maker-start dissolves into the panel's grid, so device, seed,
   points and palette stack to the left of the live proof. */
.maker-page .tool-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(8.5rem, 42%);
  column-gap: 1rem;
  align-items: start;
}
.maker-page .tool-panel > * { grid-column: 1 / -1; }
.maker-page .maker-start { display: contents; }
.maker-page .maker-device { grid-column: 1; grid-row: 2; margin-top: 0.25rem; }
.maker-page .maker-start .preview-wrap { grid-column: 2; grid-row: 2 / span 2; }
.maker-page .tool-panel > .gen-controls { grid-column: 1; grid-row: 3; grid-template-columns: minmax(0, 1fr); margin-top: 0.7rem; }
@media (min-width: 761px) {
  .maker-page .tool-panel { grid-template-columns: minmax(0, 1fr) 14.5rem; column-gap: 2rem; }
  .maker-page .tool-panel > .gen-controls { grid-template-columns: repeat(auto-fit, minmax(11.5rem, 1fr)); }
  .maker-page .maker-start #preview { width: 100%; }
}

/* ---------- iPhone chart: the lineup rides beside the title on wide screens ---------- */
@media (min-width: 900px) {
  main.lb-chart {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 21rem;
    column-gap: 2rem;
    align-items: start;
  }
  main.lb-chart > * { grid-column: 1 / -1; }
  main.lb-chart > .eyebrow,
  main.lb-chart > h1,
  main.lb-chart > .lede,
  main.lb-chart > .your-size-panel { grid-column: 1; }
  main.lb-chart > .lb-lineup { grid-column: 2; grid-row: 1 / span 4; align-self: center; margin-top: 0.5rem; transform: rotate(1.5deg); }
}
/* Explicit rows, with a 1fr filler so the tall phone never stretches a control row. */
.maker-page .tool-panel { grid-template-rows: auto auto auto 1fr auto auto auto; }
.maker-page .maker-start .preview-wrap { grid-row: 2 / span 3; }
@media (min-width: 761px) {
  .maker-page .tool-panel { grid-template-rows: auto auto auto auto auto auto 1fr; }
  .maker-page .maker-start .preview-wrap { grid-row: 2 / span 6; }
  .maker-page .tool-panel > .swatch-row,
  .maker-page .tool-panel > .controls,
  .maker-page .tool-panel > .note { grid-column: 1; }
}
/* A row reached by its anchor keeps the kit's tint over the zebra stripe. */
.prose tbody tr:target td { background-color: var(--accent-soft); }

/* ============================================================
   Site-wide build-out (2026-10). Every page type gets a lightbox
   surface: reading pages are prints on the glass, the Android chart
   carries a lineup per maker, and the 404 is a strip with a blank
   frame. Same rules as above: the kit stays pinned, the phone table
   numbers stay put, motion stops under prefers-reduced-motion.
   ============================================================ */

/* On a short page the film of the footer runs to the bottom of the window. */
html { background-color: var(--film); }

/* The swoosh under a title takes no height, so it never pushes a tool down. */
h1 { position: relative; padding-bottom: 0.5rem; }
h1::after { position: absolute; left: 0; bottom: -0.15rem; margin: 0; }

/* ---------- Reading pages (legal, methodology, guides): a print on the glass ---------- */
main.lb-print { counter-reset: lb-sec; position: relative; }
/* Each section heading carries its frame number, as printed on a contact sheet. */
main.lb-print > h2,
main.lb-print > section.prose > h2 { counter-increment: lb-sec; }
main.lb-print > h2::before,
main.lb-print > section.prose > h2::before {
  content: counter(lb-sec, decimal-leading-zero) "A \25B8";
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0.2rem;
}
main.lb-print > section.prose,
main.lb-print > section.faq { margin-top: 2.2rem; }
main.lb-print .prose blockquote,
main.lb-print .prose > ol,
main.lb-print .prose > ul { margin-left: 0; }
main.lb-print .prose li::marker { color: var(--accent); }
main.lb-print .prose em { color: var(--ink-soft); }

@media (min-width: 761px) {
  /* The sheet: photo paper, two strips of tape, a soft shadow on the glass. */
  main.lb-print {
    max-width: min(52rem, calc(100% - 2rem));
    margin: 1.4rem auto 2.5rem;
    padding: 2.2rem 2.75rem 2.75rem;
    background-color: var(--panel);
    border-radius: 4px;
    box-shadow:
      0 0 0 1px var(--line),
      0 26px 44px -26px var(--shadow),
      0 0 60px 4px var(--glow);
  }
  main.lb-print::before,
  main.lb-print::after {
    content: "";
    position: absolute;
    top: -0.7rem;
    width: 6.5rem;
    height: 1.5rem;
    background: rgba(236, 222, 186, 0.78);
    box-shadow: 0 1px 3px rgba(48, 34, 14, 0.18);
    pointer-events: none;
  }
  main.lb-print::before { left: 2rem; transform: rotate(-4deg); }
  main.lb-print::after { right: 2rem; transform: rotate(3deg); }
  main.lb-print .readout { margin-left: -0.5rem; margin-right: -0.5rem; }
}
@media (min-width: 761px) and (prefers-color-scheme: dark) {
  main.lb-print::before,
  main.lb-print::after { background: rgba(120, 104, 78, 0.55); }
}

/* ---------- Android chart: a lineup per maker, at its own scale ---------- */
.lb-lineup.lb-lineup-inline {
  width: fit-content;
  max-width: 100%;
  margin: 0.4rem 0 1.4rem;
  box-sizing: border-box;
}
.lb-lineup.lb-lineup-inline svg { width: auto; max-width: 100%; height: auto; margin: 0 auto; }
.lb-lineup.lb-lineup-inline figcaption { text-align: left; margin: 0 0.25rem 0.35rem; }

/* ---------- 404: a strip of film with one frame blank ---------- */
main.lb-missing {
  display: grid;
  gap: 1.5rem;
  align-content: start;
  min-height: 52vh;
}
.lb-strip { margin: 0; max-width: 30rem; }
.lb-strip svg { display: block; width: 100%; height: auto; filter: drop-shadow(0 14px 18px var(--shadow)); }
.lb-strip .film { fill: var(--film); }
.lb-strip .hole { fill: var(--sprocket); }
.lb-strip .blank { fill: var(--glow); stroke: var(--edge); stroke-width: 1.5; stroke-dasharray: 5 4; }
.lb-strip .edge { font-family: var(--mono); font-weight: 700; fill: var(--accent); letter-spacing: 0.08em; }
.lb-strip .mark { stroke: var(--grease); stroke-width: 4; stroke-linecap: round; fill: none; }
.lb-strip .hand { font-family: var(--hand); fill: var(--accent); }
@media (min-width: 761px) {
  main.lb-missing { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: 2.5rem; min-height: 60vh; max-width: var(--maxw); }
}

/* ---------- Phones: the tool reaches the first screen ---------- */
@media (max-width: 480px) {
  .eyebrow { margin-bottom: 0.25rem; }
  h1 { margin-bottom: 0.45rem; }
  .lede { margin-bottom: 1rem; }
  .tool-panel { margin-top: 0.3rem; }
  .tool-panel .readout { padding: 0.75rem 0.8rem; row-gap: 0.2rem; column-gap: 1.1rem; font-size: 0.8rem; line-height: 1.35; }
  .tool-panel { padding-top: 0.85rem; }
  .lede { line-height: 1.5; }
  main.lb-print > section.prose,
  main.lb-print > section.faq { margin-top: 1.8rem; }
}

/* ---------- Phones: the your-size panel keeps its actions inside the screen ----------
   The thumbnail floats beside the reading and the actions start on their own
   full-width line under it: "Make a wallpaper at this size" never wraps, and
   in a wide fallback sans it overflowed a 3.6rem indent at 320px. */
@media (max-width: 480px) {
  .your-size-panel { padding-left: 0.9rem; }
  .your-size-panel::before { position: static; float: left; margin: 0.1rem 0.75rem 0.25rem 0; }
  .your-size-panel > :not(.your-size-line) { clear: left; }
  .your-size-panel::after { content: ""; display: block; clear: both; }
}

/* ---------- Reduced motion: decoration stops at its at-rest frame ---------- */
@media (prefers-reduced-motion: reduce) {
  .lb-art .glass-wrap,
  .lb-art .loupe { animation: none; }
  .tool-card:hover,
  .tool-card:focus-within,
  .gallery-card:hover,
  .gallery-card:focus-within,
  .swatch:hover,
  .lb-lineup .phone:hover { transform: none; }
  .prose tbody tr:hover td code { transform: none; }
}

/* ---------- Print: ink on white paper, whatever the screen theme ----------
   Browsers print on white and drop backgrounds, so the dark tokens (and the
   film strip's light-on-film ink, light in both themes) would print near-white
   on white. Every ink and colour token goes back to the light palette, the
   film tokens become paper, and the hard-coded film inks follow;
   tests/browser-smoke.js (print sweep) holds all visible text to 4.5:1 on white. */
@media print {
  :root {
    color-scheme: light;
    --paper: #f4eedf;
    --glow: #fffdf5;
    --panel: #fffcf4;
    --ink: #1e1a15;
    --ink-soft: #574d3e;
    --line: #ded3bd;
    --line-strong: #887d69;
    --accent: #ad2318;
    --accent-soft: #f7e2da;
    --focus: #ad2318;
    --pass: #1d6f3a;
    --pass-soft: #e0f0e4;
    --fail: #b3261e;
    --fail-soft: #fbe7e3;
    --warn: #8a5300;
    --readout-bg: #ffffff;
    --readout-ink: #1e1a15;
    --readout-dim: #574d3e;
    --film: #ffffff;
    --film-hi: #f4eedf;
    --edge: #8a5300;
    --sprocket: #ded3bd;
    --grease: #c22a1d;
    --alu-1: #d9d5cc;
    --alu-2: #a9a49a;
    --bezel: #16130f;
    --grid: rgba(115, 92, 50, 0.07);
    --shadow: rgba(48, 34, 14, 0.22);
    --lb-hot: #ffffff;
    --lb-edge: #f3e9d2;
    --lb-halo: rgba(255, 232, 178, 0.95);
  }
  .brand,
  .site-nav a,
  .site-footer,
  .site-footer .inner,
  .site-footer a { color: var(--ink); }
  .readout .r-value.pass { color: var(--pass); }
  .readout .r-value.fail { color: var(--fail); }
  /* A filled button's paper-coloured label would print on white: outline it instead. */
  .btn:not(.secondary) { color: var(--accent); background: var(--panel); }
}