:root {
  --bg: #1a1a1c;
  --surface: #252528;
  --surface-elevated: #2e2e32;
  --border: #3a3a3e;
  --text: #e8e8ec;
  --text-muted: #9a9aa0;
  --focus-ring: #4a9eff;
  --warning: #e0a030;
  --accent: #4a9eff;
  --button-bg: #3a3a3e;
  --button-hover: #45454a;
  --button-primary-bg: #2d6dd0;
  --button-primary-hover: #3a7de8;
  --input-bg: #1a1a1c;
  --input-border: #3a3a3e;
  --progress-bg: #3a3a3e;
  --progress-fill: #4a9eff;
}
*, *::before, *::after { box-sizing: border-box; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.page-header { margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border); }
.page-title { margin: 0; font-size: 1.25rem; font-weight: 600; color: var(--text); }
.row { display: flex; align-items: center; gap: 0.75rem; }
.row-wrap { flex-wrap: wrap; }
.row-between { justify-content: space-between; }
.row-top { align-items: flex-start; }
.inline-value { font-size: 0.85rem; color: var(--text-muted); }
.section {
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.section:last-of-type { margin-bottom: 0; }
.section-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem 0;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
}
.tabs {
  display: inline-flex;
  gap: 0.4rem;
  padding: 0.25rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-elevated);
  margin-bottom: 0.75rem;
}
.tab {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.6rem;
  border-radius: 8px;
  cursor: pointer;
}
.tab[aria-selected="true"] {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.tab:focus-visible { outline: none; box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.25); }
.tab-panel[hidden] { display: none; }
.crop-shell {
  width: 100%;
  height: 520px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-elevated);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.crop-shell img {
  display: block;
  max-width: 100%;
  max-height: 100%;
}
.iid-preview-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-top: 0.75rem;
}
.iid-preview-img {
  display: block;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  max-width: 400px;
}
.iid-preview-img--tiny {
  image-rendering: pixelated;
}
.b64-label {
  margin-top: 0.5rem;
  margin-bottom: 0.2rem;
  font-size: 0.8rem;
}
pre.file-hash {
  font-size: 4pt;
  margin-top: 0;
}
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }
.muted { color: var(--text-muted); font-size: 0.85rem; }
.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
  user-select: none;
}
.checkbox-inline input { margin: 0; }
.container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 640px) {
  .container { grid-template-columns: 1fr; }
}
.panel-left {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.panel-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

/* Give the right-side Appearance card more breathing room */
.section-appearance {
  padding: 1.15rem 1.25rem;
}
.section-appearance .section-title {
  margin-bottom: 1rem;
}
.section-appearance .control-group + .control-group {
  margin-top: 1rem;
}
.section-appearance .control-group {
  gap: 0.4rem;
}
.left-specific-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: start;
}
.symbology-wrapper { min-width: 0; }
.subsection {
  margin-top: 0.75rem;
  padding: 0.9rem 1rem;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.subsection:first-of-type { margin-top: 0; }
.subsection-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 0.6rem 0;
}
.subsection-header .subsection-title { margin: 0; }
.subsection-title {
  margin: 0 0 0.6rem 0;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* Generic form layout helpers (used by MRZ page) */
.form-section .subsection .control-group + .control-group {
  margin-top: 0.75rem;
}
/* When control-groups are placed side-by-side in a .row, don't add vertical spacing. */
.form-section .subsection .row > .control-group + .control-group {
  margin-top: 0;
}
.form-section .control-group {
  gap: 0.35rem;
}
@media (max-width: 900px) {
  .left-specific-columns { grid-template-columns: 1fr; }
}
label { font-weight: 600; font-size: 0.9rem; color: var(--text); }
.mode-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.mode-row input[type="radio"] { margin: 0; }
.helper-row { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.helper-row .helper-label { font-size: 0.9rem; font-weight: 600; }
.helper-note { margin: 0.25rem 0 0; font-size: 0.8rem; color: var(--text-muted); }
.caption-note { margin: 0.25rem 0 0; font-size: 0.8rem; color: var(--text-muted); }
.caption-font-label { font-size: 0.9rem; font-weight: 600; margin-left: 0.5rem; }
.caption-font-label input { width: 5rem; padding: 0.25rem 0.4rem; border: 1px solid var(--input-border); border-radius: 4px; font: inherit; font-weight: 400; background: var(--input-bg); color: var(--text); }
textarea {
  width: 100%;
  min-height: 120px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  resize: vertical;
  background: var(--input-bg);
  color: var(--text);
}
textarea::placeholder { color: var(--text-muted); }
textarea:focus {
  outline: none;
  border-color: var(--focus-ring);
  box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.25);
}
.warning {
  font-size: 0.85rem;
  color: var(--warning);
  margin-top: -0.25rem;
}
.gzip-status {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  min-height: 1.2em;
}
.file-hash {
  margin-top: 0.35rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-elevated);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.8rem;
  word-break: break-all;
  white-space: pre-wrap;
}
.gzip-encoding-row {
  margin-top: 0.35rem;
}
.compression-codec-row {
  margin-bottom: 0.35rem;
}
.compression-codec-label {
  margin-right: 0.5rem;
  font-weight: 500;
}
.compression-codec-row label {
  margin-right: 0.75rem;
}
.gzip-qr-text-encoding {
  margin-top: 0.35rem;
}
.gzip-qr-text-label {
  margin-right: 0.5rem;
  font-weight: 500;
}
.gzip-qr-text-encoding label {
  margin-right: 0.75rem;
  font-weight: 500;
}
.gzip-encoding-row label {
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.control-group-spaced {
  margin-top: 0.75rem;
}
.control-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.control-row > input,
.control-row > select,
.control-row > textarea {
  flex: 1;
  min-width: 0;
}
.control-group label { font-weight: 500; font-size: 0.8rem; color: var(--text-muted); }
input[type="range"] { width: 100px; accent-color: var(--accent); }
.size-inputs { display: flex; align-items: center; gap: 0.5rem; width: 100%; }
.size-inputs input[type="range"] { flex: 1; width: auto; min-width: 160px; }
.size-presets { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.35rem; }
.size-presets-dynamic { margin-top: 0.5rem; }
.size-presets-dynamic::before {
  content: "Pixel-perfect:";
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
}
.btn-size-preset { padding: 0.25rem 0.5rem; font-size: 0.8rem; min-width: 2.5rem; }
.size-inputs input[type="number"] { width: 4.5rem; padding: 0.35rem 0.5rem; border: 1px solid var(--input-border); border-radius: 4px; font: inherit; background: var(--input-bg); color: var(--text); }
input[type="color"] { width: 2rem; height: 1.75rem; padding: 0; border: 1px solid var(--input-border); cursor: pointer; background: var(--input-bg); }
select { padding: 0.35rem 0.5rem; border-radius: 4px; border: 1px solid var(--input-border); font: inherit; background: var(--input-bg); color: var(--text); }
input:focus-visible, select:focus-visible { outline: none; border-color: var(--focus-ring); box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.25); }
input[type="checkbox"]:focus-visible, input[type="radio"]:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.controls { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; align-items: end; }
@media (min-width: 900px) {
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
/* Appearance is now single-column (above previews). */
.appearance-grid { display: block; }
.appearance-left-stack { display: flex; flex-direction: column; gap: 1rem; }
.color-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; align-items: center; }
.color-field { display: inline-flex; align-items: center; justify-content: flex-start; gap: 0.6rem; margin: 0; font-weight: 500; font-size: 0.8rem; color: var(--text-muted); }
.color-field span { white-space: nowrap; }
.caption-stack { display: flex; flex-direction: column; gap: 0.35rem; }
@media (max-width: 900px) {
  .appearance-grid { display: block; }
}
.preview-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0;
  min-width: 200px;
  min-height: 200px;
  max-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.preview-wrap.empty { color: var(--text-muted); }
.preview-card { width: 100%; }
.preview-header { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.85rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.preview-subheader { padding: 0.6rem 1rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 0.8rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; background: var(--surface-elevated); }
.preview-body { padding: 1rem; display: flex; align-items: center; justify-content: center; min-height: 200px; }
.preview-capacity-max-row { display: flex; align-items: center; gap: 0.5rem; }
.preview-capacity-max-row progress { width: 100%; height: 0.5rem; min-width: 0; vertical-align: middle; background: var(--progress-bg); border-radius: 4px; flex: 1; }
.preview-capacity-max-row progress::-webkit-progress-bar { background: var(--progress-bg); border-radius: 4px; }
.preview-capacity-max-row progress::-webkit-progress-value { background: var(--progress-fill); border-radius: 4px; }
.preview-capacity-max-row progress::-moz-progress-bar { background: var(--progress-fill); border-radius: 4px; }
.preview-capacity-pct { font-size: 0.8rem; color: var(--text-muted); min-width: 3.5rem; text-align: right; }
.preview-body-aztec { min-height: 240px; }
.preview-aztec-stack { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.aztec-error { font-size: 0.8rem; color: var(--warning); text-align: center; max-width: 100%; }
.preview-footer { padding: 0.9rem 1rem 1rem; border-top: 1px solid var(--border); }
.preview-footer .preview-capacity-max-row { margin-bottom: 0.5rem; }
.preview-footer .download-row { margin-top: 0; }
.preview-wrap #previewPlaceholder { max-width: 100%; text-align: center; padding: 0 1rem; }
#previewCanvas { display: block; max-width: 100%; height: auto; }
#previewSvg { display: none; }
#aztecCanvas { display: block; max-width: 100%; height: auto; }
#aztecSvg { display: none; }
.download-row { margin-top: 0.5rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.btn {
  padding: 0.4rem 0.75rem;
  font: inherit;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--button-bg);
  color: var(--text);
  cursor: pointer;
}
.btn-small { padding: 0.25rem 0.55rem; font-size: 0.8rem; }
.btn:hover { background: var(--button-hover); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--focus-ring); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--button-primary-bg); border-color: var(--button-primary-bg); }
.btn-primary:hover:not(:disabled) { background: var(--button-primary-hover); border-color: var(--button-primary-hover); }
.helper-row button { padding: 0.35rem 0.6rem; font: inherit; border-radius: 4px; border: 1px solid var(--border); background: var(--button-bg); color: var(--text); cursor: pointer; }
.helper-row button:hover { background: var(--button-hover); }
.helper-row button:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--focus-ring); }
.download-row .btn { padding: 0.4rem 0.75rem; }
.download-row .btn { flex: 1; min-width: 140px; }
.capacity-meter { margin-top: 0.25rem; font-size: 0.85rem; }
.capacity-row { display: flex; flex-direction: column; align-items: stretch; gap: 0.35rem; }
.capacity-row progress { min-width: 0; }
.capacity-meter progress { width: 100%; height: 0.5rem; vertical-align: middle; background: var(--progress-bg); border-radius: 4px; }
.capacity-meter progress::-webkit-progress-bar { background: var(--progress-bg); border-radius: 4px; }
.capacity-meter progress::-webkit-progress-value { background: var(--progress-fill); border-radius: 4px; }
.capacity-meter progress::-moz-progress-bar { background: var(--progress-fill); border-radius: 4px; }
.capacity-meter .capacity-text { margin-top: 0; color: var(--text-muted); font-size: 0.8rem; white-space: normal; overflow: visible; text-overflow: clip; max-width: 100%; line-height: 1.35; }
.encoding-insights { margin-top: 0.6rem; padding: 0.5rem 0.65rem; background: var(--surface-elevated); border: 1px solid var(--border); border-radius: 6px; font-size: 0.8rem; color: var(--text-muted); }
.encoding-insights .insight-title { font-weight: 700; color: var(--text); margin-bottom: 0.25rem; }
.encoding-insights .insight-row { margin-top: 0.25rem; }
.encoding-insights .insight-row:first-child { margin-top: 0; }
.encoding-insights .charset-sample { font-family: ui-monospace, monospace; word-break: break-all; color: var(--text); }
.encoding-insights.empty { color: var(--text-muted); }
.docs-section { margin-top: 1.5rem; padding: 0.75rem 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.docs-section summary { font-weight: 600; cursor: pointer; color: var(--text); }
.docs-content { margin-top: 0.75rem; }
.docs-content h3 { font-size: 0.95rem; margin: 1rem 0 0.35rem; color: var(--text); }
.docs-content h3:first-child { margin-top: 0; }
.docs-content p, .docs-content ul { margin: 0.25rem 0; font-size: 0.9rem; line-height: 1.45; color: var(--text-muted); }
.docs-content code { background: var(--surface-elevated); padding: 0.1rem 0.3rem; border-radius: 3px; font-size: 0.85em; color: var(--text); }

@font-face {
  font-family: "OCRB";
  src: url("OCR-B.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

.mrz-preview {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.9rem;
  margin: 0;
  padding: 0.75rem 1rem;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow-x: hidden;
}

.mrz-preview--ocrb {
  font-family: "OCRB", "OCR-B", "OCR B", "OCRB10", "OCRB10 BT", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.7em;
  letter-spacing: 0.02em;
}

.sig-status { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-muted); }
.sig-status.sig-valid { color: var(--success, #0a0); }
.sig-status.sig-invalid { color: var(--error, #c00); }