/* The QR Code Generator as a found artifact (natnlabs/appzoo#155, decisions/027): a cargo-manifest tagging station from the future.
   Stencilled metal plate, manifest-style labels and fields, a scanner reticle round the code. The code itself is drawn by the script
   on the visitor's own colours (white on black by default), so it always scans. Repo-authored because the design skill ships no
   artifact.css for this exhibit; if it ever does, that file supersedes this one. Every selector sits under the artifact attribute.
   The palette below is the only place a colour is written; everything else reads --qr-*. */

[data-artifact="qr-code-generator"] {
  --qr-plate: #c5cbc2;
  --qr-edge: #2a322d;
  --qr-ink: #171d19;
  --qr-ink-soft: #343e38;
  --qr-field: #eef0e8;
  --qr-bed: #f6f7f1;
  --qr-accent: #a8380c;
  --qr-on-accent: #fbf6ea;
  --qr-focus: #0b3d91;
  --qr-warn: #8f1d12;
  --qr-stencil: "Big Shoulders Stencil Text", Impact, "Arial Narrow", sans-serif;
  --qr-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
:root[data-theme="dark"] [data-artifact="qr-code-generator"] {
  --qr-plate: #1b221e;
  --qr-edge: #8f9d93;
  --qr-ink: #e4e9df;
  --qr-ink-soft: #b3beb4;
  --qr-field: #0f1411;
  --qr-bed: #0a0f0c;
  --qr-accent: #f0a63a;
  --qr-on-accent: #1a1206;
  --qr-focus: #7fc4ff;
  --qr-warn: #ff9a8a;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) [data-artifact="qr-code-generator"] {
    --qr-plate: #1b221e;
    --qr-edge: #8f9d93;
    --qr-ink: #e4e9df;
    --qr-ink-soft: #b3beb4;
    --qr-field: #0f1411;
    --qr-bed: #0a0f0c;
    --qr-accent: #f0a63a;
    --qr-on-accent: #1a1206;
    --qr-focus: #7fc4ff;
    --qr-warn: #ff9a8a;
  }
}

[data-artifact="qr-code-generator"] { margin: 0 0 3rem; font-family: var(--qr-mono); font-size: 1rem; line-height: 1.5; color: var(--qr-ink); }
[data-artifact="qr-code-generator"] *, [data-artifact="qr-code-generator"] *::before, [data-artifact="qr-code-generator"] *::after { box-sizing: border-box; }
[data-artifact="qr-code-generator"] .qr-sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* The plate: pressed metal with four rivets. */
[data-artifact="qr-code-generator"] .qr-plate {
  position: relative;
  padding: 1.75rem 1.25rem 1.25rem;
  color: var(--qr-ink);
  background-color: var(--qr-plate);
  background-image:
    radial-gradient(circle, var(--qr-edge) 0 3px, transparent 3.5px),
    radial-gradient(circle, var(--qr-edge) 0 3px, transparent 3.5px),
    radial-gradient(circle, var(--qr-edge) 0 3px, transparent 3.5px),
    radial-gradient(circle, var(--qr-edge) 0 3px, transparent 3.5px);
  background-size: 14px 14px;
  background-position: 6px 6px, calc(100% - 6px) 6px, 6px calc(100% - 6px), calc(100% - 6px) calc(100% - 6px);
  background-repeat: no-repeat;
  border: 3px solid var(--qr-edge);
  border-radius: 8px;
}
@media (min-width: 40rem) {
  [data-artifact="qr-code-generator"] .qr-plate { padding: 2rem 2rem 1.75rem; }
}

[data-artifact="qr-code-generator"] .qr-head { margin: 0 0 1.25rem; padding: 0 0 0.75rem; border-bottom: 3px double var(--qr-edge); }
[data-artifact="qr-code-generator"] .qr-kicker {
  max-width: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.25rem;
  font-family: var(--qr-stencil);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qr-ink-soft);
}
/* The one nod to the Zoo: the name in the cabinet's title type. */
[data-artifact="qr-code-generator"] .qr-title { margin: 0; font-family: var(--font-display, "Ultra", Georgia, serif); font-size: 1.75rem; font-weight: 400; line-height: 1.15; color: var(--qr-ink); }
@media (min-width: 40rem) {
  [data-artifact="qr-code-generator"] .qr-title { font-size: 2.25rem; }
}
[data-artifact="qr-code-generator"] .qr-note { margin: 0 0 1rem; color: var(--qr-ink); }

/* Content type: native radios drawn as stencilled tags; arrow keys and the checked value come from the browser. */
[data-artifact="qr-code-generator"] .qr-types { display: flex; gap: 0.5rem; margin: 0 0 1.25rem; padding: 0 0 0.5rem; border: 0; min-width: 0; overflow-x: auto; }
[data-artifact="qr-code-generator"] .qr-type { position: relative; flex: none; }
[data-artifact="qr-code-generator"] .qr-type input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
[data-artifact="qr-code-generator"] .qr-type span {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 1rem;
  font-family: var(--qr-stencil);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--qr-ink);
  background: var(--qr-field);
  border: 2px solid var(--qr-edge);
  border-radius: 3px;
}
[data-artifact="qr-code-generator"] .qr-type input:hover + span { border-color: var(--qr-accent); }
[data-artifact="qr-code-generator"] .qr-type input:checked + span { color: var(--qr-on-accent); background: var(--qr-accent); border-color: var(--qr-accent); }
[data-artifact="qr-code-generator"] .qr-type input:focus-visible + span { outline: 3px solid var(--qr-focus); outline-offset: 2px; }

[data-artifact="qr-code-generator"] .qr-layout { display: grid; gap: 1.5rem; }
@media (min-width: 52rem) {
  [data-artifact="qr-code-generator"] .qr-layout { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  [data-artifact="qr-code-generator"] .qr-output { position: sticky; top: 1rem; }
}
[data-artifact="qr-code-generator"] .qr-panel[hidden] { display: none; }

/* Manifest fields: a stencilled caption over a ruled entry box. */
[data-artifact="qr-code-generator"] .qr-field { flex: none; margin: 0 0 1rem; max-width: none; }
[data-artifact="qr-code-generator"] .qr-label {
  display: block;
  margin: 0 0 0.25rem;
  font-family: var(--qr-stencil);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qr-ink);
}
[data-artifact="qr-code-generator"] .qr-input {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  color: var(--qr-ink);
  background: var(--qr-field);
  border: 2px solid var(--qr-edge);
  border-bottom-width: 4px;
  border-radius: 2px;
}
[data-artifact="qr-code-generator"] textarea.qr-input { resize: vertical; }
[data-artifact="qr-code-generator"] .qr-input::placeholder { color: var(--qr-ink-soft); opacity: 1; }
[data-artifact="qr-code-generator"] .qr-input:focus-visible,
[data-artifact="qr-code-generator"] .qr-field input[type="color"]:focus-visible,
[data-artifact="qr-code-generator"] .qr-swatch:focus-visible,
[data-artifact="qr-code-generator"] .qr-btn:focus-visible { outline: 3px solid var(--qr-focus); outline-offset: 2px; }
[data-artifact="qr-code-generator"] .qr-field input[type="color"] {
  display: block;
  width: 100%;
  height: 44px;
  padding: 4px;
  background: var(--qr-field);
  border: 2px solid var(--qr-edge);
  border-radius: 2px;
}

/* The scanner bed: the code sits in a reticle. The code is drawn on the visitor's own colours; the bed only frames it. */
[data-artifact="qr-code-generator"] .qr-stage {
  position: relative;
  padding: 2.25rem;
  color: var(--qr-ink);
  background: var(--qr-bed);
  border: 2px solid var(--qr-edge);
  border-radius: 2px;
}
[data-artifact="qr-code-generator"] .qr-reticle { position: absolute; width: 1.5rem; height: 1.5rem; border: 0 solid var(--qr-accent); }
[data-artifact="qr-code-generator"] .qr-reticle:nth-of-type(1) { top: 0.5rem; left: 0.5rem; border-top-width: 4px; border-left-width: 4px; }
[data-artifact="qr-code-generator"] .qr-reticle:nth-of-type(2) { top: 0.5rem; right: 0.5rem; border-top-width: 4px; border-right-width: 4px; }
[data-artifact="qr-code-generator"] .qr-reticle:nth-of-type(3) { bottom: 0.5rem; left: 0.5rem; border-bottom-width: 4px; border-left-width: 4px; }
[data-artifact="qr-code-generator"] .qr-reticle:nth-of-type(4) { bottom: 0.5rem; right: 0.5rem; border-bottom-width: 4px; border-right-width: 4px; }
[data-artifact="qr-code-generator"] .qr-preview { display: flex; align-items: center; justify-content: center; min-height: 12rem; }
[data-artifact="qr-code-generator"] .qr-preview svg { display: block; width: 100%; max-width: 20rem; height: auto; border: 2px solid var(--qr-edge); }
[data-artifact="qr-code-generator"] .qr-empty { margin: 0; text-align: center; color: var(--qr-ink-soft); }
[data-artifact="qr-code-generator"] .qr-status { margin: 0.75rem 0 0; text-align: center; color: var(--qr-ink); }
[data-artifact="qr-code-generator"] .qr-status:empty { display: none; }
/* A rejected proof: the warning is stamped on the bed's corner. */
[data-artifact="qr-code-generator"] .qr-status[data-kind="warning"] {
  position: absolute;
  top: -0.75rem;
  right: 0.75rem;
  max-width: 85%;
  margin: 0;
  padding: 0.5rem 0.75rem;
  font-weight: 700;
  text-align: left;
  color: var(--qr-warn);
  background: var(--qr-field);
  border: 2px solid var(--qr-warn);
  transform: rotate(-2deg);
}

[data-artifact="qr-code-generator"] .qr-tools { margin-top: 1.5rem; }
[data-artifact="qr-code-generator"] .qr-colours, [data-artifact="qr-code-generator"] .qr-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
[data-artifact="qr-code-generator"] .qr-pair { margin-top: 0.5rem; }
[data-artifact="qr-code-generator"] .qr-swatches { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 0.5rem; }
[data-artifact="qr-code-generator"] .qr-swatch { width: 2rem; height: 2rem; padding: 0; cursor: pointer; border: 2px solid var(--qr-edge); border-radius: 2px; }
[data-artifact="qr-code-generator"] .qr-swatch[aria-pressed="true"] { outline: 3px solid var(--qr-accent); outline-offset: 2px; }

[data-artifact="qr-code-generator"] .qr-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 0.5rem 0 0; max-width: none; }
[data-artifact="qr-code-generator"] .qr-btn {
  flex: 1 1 auto;
  min-height: 44px;
  padding: 0 1.25rem;
  font-family: var(--qr-stencil);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--qr-ink);
  background: var(--qr-field);
  border: 2px solid var(--qr-edge);
  border-radius: 3px;
}
[data-artifact="qr-code-generator"] .qr-btn-primary { color: var(--qr-on-accent); background: var(--qr-accent); border-color: var(--qr-accent); }
[data-artifact="qr-code-generator"] .qr-btn:hover:not(:disabled) { border-color: var(--qr-accent); }
[data-artifact="qr-code-generator"] .qr-btn:disabled { cursor: not-allowed; color: var(--qr-ink-soft); background: var(--qr-plate); border-style: dashed; }

/* A line from the manifest, left as found. */
[data-artifact="qr-code-generator"] .qr-manifest {
  max-width: none;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 1rem 0 0;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qr-ink-soft);
}
[data-artifact="qr-code-generator"] .qr-blank { flex: 1 1 auto; min-width: 4rem; border-bottom: 2px solid var(--qr-ink-soft); }

@media (max-width: 30rem) {
  [data-artifact="qr-code-generator"] .qr-colours, [data-artifact="qr-code-generator"] .qr-pair { grid-template-columns: 1fr; }
  [data-artifact="qr-code-generator"] .qr-stage { padding: 1.75rem 1rem; }
  [data-artifact="qr-code-generator"] .qr-kicker { flex-direction: column; gap: 0; }
}

/* A small settle when the code redraws (each redraw inserts a fresh svg); absent under reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  [data-artifact="qr-code-generator"] .qr-preview svg { animation: qr-settle 0.14s ease-out; }
  @keyframes qr-settle {
    from { transform: translate(2px, 2px); }
    to { transform: none; }
  }
}