:root {
  /* Colour palette */
  --lp-bg: #0b0d10;
  --lp-surface: #15181d;
  --lp-surface-2: #1d2127;
  --lp-border: #2a2f37;
  --lp-text: #e5e7eb;
  --lp-text-dim: #9ca3af;
  --lp-text-faint: #6b7280;
  --lp-accent: #60a5fa;
  --lp-accent-strong: #3b82f6;
  --lp-pass: #22c55e;
  --lp-fail: #ef4444;
  --lp-warn: #f59e0b;

  /* Spacing scale — Every Layout Stack rhythm */
  --lp-space-xs: 4px;   /* field-internal: label ↔ input */
  --lp-space-sm: 8px;   /* tight groupings: chip gaps, compact grids */
  --lp-space-md: 12px;  /* standard gap: grid gaps, intra-section */
  --lp-space-lg: 16px;  /* section-internal: between content blocks */
  --lp-space-xl: 24px;  /* section separation */
  --lp-space-2xl: 36px; /* between major sections */

  /* Border-radius scale */
  --lp-radius-sm: 6px;  /* inputs, small buttons, chips, code badges */
  --lp-radius-md: 10px; /* cards, call-code, radio cards, panels */
  --lp-radius-lg: 12px; /* result cards, hero elements */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--lp-bg);
  color: var(--lp-text);
  font: 14px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

body { min-height: 100vh; }

a { color: var(--lp-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.lp-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--lp-surface);
  border-bottom: 1px solid var(--lp-border);
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  gap: var(--lp-space-md);
}

.lp-header-top {
  display: flex;
  align-items: center;
  gap: var(--lp-space-lg);
  flex-wrap: wrap;
}

header.lp-header h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

a.lp-brand {
  display: flex;
  align-items: center;
  gap: var(--lp-space-md);
  color: var(--lp-text);
}
a.lp-brand:hover { text-decoration: none; }

.lp-logo {
  display: block;
  width: 36px;
  height: 36px;
  border-radius: var(--lp-radius-sm);
  object-fit: contain;
}

nav.lp-tabs { display: flex; gap: var(--lp-space-xs); flex-wrap: wrap; }
nav.lp-tabs a {
  padding: 6px 12px;
  border-radius: var(--lp-radius-sm);
  color: var(--lp-text-dim);
  font-weight: 500;
  cursor: pointer;
}
nav.lp-tabs a:hover { background: var(--lp-surface-2); text-decoration: none; }
nav.lp-tabs a.active { background: var(--lp-surface-2); color: var(--lp-text); }
nav.lp-tabs a.disabled {
  color: var(--lp-text-faint);
  cursor: not-allowed;
  opacity: 0.55;
}
nav.lp-tabs a.disabled:hover { background: transparent; }

/* UI locale picker (top-right of header) */
.lp-ui-locale-picker {
  margin-left: auto;
  position: relative;
}
.lp-ui-locale-picker summary {
  display: inline-flex;
  align-items: center;
  gap: var(--lp-space-sm);
  padding: 6px 10px;
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-sm);
  background: var(--lp-surface-2);
  color: var(--lp-text);
  cursor: pointer;
  font-size: 13px;
  list-style: none;
  user-select: none;
}
.lp-ui-locale-picker summary::-webkit-details-marker { display: none; }
.lp-ui-locale-picker summary:hover { border-color: var(--lp-accent); }
.lp-ui-locale-caret { font-size: 10px; color: var(--lp-text-dim); }
.lp-ui-locale-flag { font-size: 14px; }
.lp-ui-locale-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 6px;
  margin: 0;
  list-style: none;
  min-width: 260px;
  max-height: 60vh;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.lp-ui-locale-item {
  padding: 0;
  margin: 0;
}
.lp-ui-locale-form {
  margin: 0;
  padding: 0;
}
.lp-ui-locale-form button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  gap: var(--lp-space-sm);
  padding: 8px 10px;
  background: transparent;
  border: 0;
  border-radius: var(--lp-radius-sm);
  color: var(--lp-text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.lp-ui-locale-form button:hover {
  background: var(--lp-surface-2);
}
.lp-ui-locale-item.active .lp-ui-locale-form button {
  background: color-mix(in srgb, var(--lp-accent) 15%, var(--lp-surface));
  color: var(--lp-text);
}
.lp-ui-locale-id {
  margin-left: auto;
  color: var(--lp-text-faint);
  font-size: 11px;
  font-family: ui-monospace, monospace;
}

/* ── Every Layout Stack ──────────────────────────────────── */
main.lp-main { padding: var(--lp-space-xl) 20px; max-width: 1200px; margin: 0 auto; }

/* Sections stack inside main and inside the form. Both selectors are
   needed because some tabs render sections after the closing </form>. */
.lp-main > * + *,
.lp-form > * + * { margin-top: var(--lp-space-2xl); }

/* Children inside a section stack with consistent rhythm */
.lp-section > * + * { margin-top: var(--lp-space-lg); }

/* Heading sits tighter to the first child */
.lp-section > h2 { margin: 0; }
.lp-section > h2 + * { margin-top: var(--lp-space-md); }

.lp-section h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--lp-text-dim);
  font-weight: 600;
}

/* ── Footer ─────────────────────────────────────────────── */
.lp-footer {
  margin: var(--lp-space-xl) auto 0;
  padding: var(--lp-space-lg) 20px;
  max-width: 1200px;
  border-top: 1px solid var(--lp-border);
  color: var(--lp-text-faint);
  font-size: 12px;
  text-align: center;
}
.lp-footer a { color: var(--lp-accent); }
.lp-footer-sep { color: var(--lp-text-faint); margin: 0 var(--lp-space-sm); }

/* ── Error card ─────────────────────────────────────────── */
.lp-error {
  background: color-mix(in srgb, var(--lp-fail) 15%, transparent);
  border: 1px solid var(--lp-fail);
  border-radius: var(--lp-radius-md);
  padding: var(--lp-space-md) var(--lp-space-lg);
  color: #fecaca;
  font-family: ui-monospace, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

/* ── Form layout ────────────────────────────────────────── */
.lp-form { }
.lp-top-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--lp-space-md);
}

.lp-unit-builder {
  display: grid;
  grid-template-columns: minmax(120px, 0.8fr) minmax(140px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(200px, 1.2fr);
  gap: var(--lp-space-md);
}

.lp-unit-builder.no-number {
  grid-template-columns: minmax(140px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(200px, 1.2fr);
}

.lp-unit-summary dd { display: flex; align-items: center; gap: var(--lp-space-md); flex-wrap: wrap; }
.lp-iex-session {
  background: var(--lp-code-bg, rgba(127,127,127,0.08));
  border-radius: var(--lp-radius-sm);
  padding: var(--lp-space-sm) var(--lp-space-md);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  color: var(--lp-text, inherit);
}
.lp-iex-line { display: flex; align-items: flex-start; gap: var(--lp-space-sm); }
.lp-iex-prompt { color: var(--lp-accent, #7aa); user-select: none; flex-shrink: 0; }
.lp-iex-code { margin: 0; padding: 0; background: transparent; white-space: pre-wrap; }
.lp-iex-result { color: var(--lp-text-faint); }
.lp-iex-value { padding-left: var(--lp-space-md); }

.lp-field {
  display: flex;
  flex-direction: column;
  gap: var(--lp-space-xs);
  min-width: 0;
}
.lp-field-label {
  color: var(--lp-text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.lp-field-hint {
  color: var(--lp-text-faint);
  font-size: 11px;
}

input[type="text"],
input[type="number"],
select {
  background: var(--lp-bg);
  color: var(--lp-text);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-sm);
  padding: var(--lp-space-sm) 10px;
  font: inherit;
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
  line-height: 1.3;
}

/* Safari renders <select> with its own appearance and ignores custom
   background/padding unless we reset. Supply an SVG chevron so the select
   still looks like a dropdown. */
select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 30px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='none' stroke='%239aa0a6' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 10px 6px;
  cursor: pointer;
}
select::-ms-expand { display: none; }
option { background: var(--lp-bg); color: var(--lp-text); }

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--lp-accent);
}
input[type="text"],
.lp-pattern-input {
  font-family: ui-monospace, monospace;
}

.lp-sub-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--lp-space-md);
}

/* Radio cards */
.lp-radio-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--lp-space-md);
}

.lp-radio-card {
  display: flex;
  flex-direction: column;
  gap: var(--lp-space-xs);
  padding: 12px 14px;
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  background: var(--lp-surface);
  cursor: pointer;
  transition: border-color 120ms, background 120ms;
}
.lp-radio-card:hover { background: var(--lp-surface-2); }
.lp-radio-card input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.lp-radio-card.active {
  border-color: var(--lp-accent);
  background: color-mix(in srgb, var(--lp-accent) 12%, var(--lp-surface));
}
.lp-radio-title { font-weight: 600; font-size: 13px; }
.lp-radio-hint { font-size: 11px; color: var(--lp-text-dim); }

.lp-advanced-options {
  padding: var(--lp-space-md) 14px;
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  background: var(--lp-surface);
}
.lp-advanced-options-title {
  margin: 0 0 12px 0;
  font-size: 12px;
  color: var(--lp-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* Result card */
.lp-result-section h2 { color: var(--lp-accent); }
.lp-result {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-lg);
  padding: 28px 24px;
  font-family: ui-monospace, monospace;
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--lp-text);
  overflow-x: auto;
  white-space: nowrap;
}
.lp-result.lp-muted { color: var(--lp-text-faint); }
.lp-muted { color: var(--lp-text-dim); }

/* HexDocs slide-out panel */
.lp-hexdocs-link {
  color: inherit;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  text-decoration-color: var(--lp-text-faint);
  cursor: pointer;
}
.lp-hexdocs-link:hover { text-decoration-style: solid; text-decoration-color: var(--lp-accent); }

.lp-hexdocs-panel {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
}
.lp-hexdocs-panel.open { pointer-events: auto; }

.lp-hexdocs-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  transition: opacity 200ms ease;
}
.lp-hexdocs-panel.open .lp-hexdocs-backdrop { opacity: 1; }

.lp-hexdocs-aside {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(760px, 100vw);
  background: var(--lp-surface);
  border-left: 1px solid var(--lp-border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 250ms ease;
  box-shadow: -12px 0 32px rgba(0, 0, 0, 0.4);
}
.lp-hexdocs-panel.open .lp-hexdocs-aside { transform: translateX(0); }

.lp-hexdocs-header {
  display: flex;
  align-items: center;
  gap: var(--lp-space-sm);
  padding: 10px 14px;
  border-bottom: 1px solid var(--lp-border);
  background: var(--lp-surface-2);
}
.lp-hexdocs-external {
  margin-left: auto;
  color: var(--lp-text-dim);
  text-decoration: none;
  font-size: 18px;
  padding: 2px 8px;
  border-radius: var(--lp-radius-sm);
}
.lp-hexdocs-external:hover { color: var(--lp-text); background: var(--lp-border); }
.lp-hexdocs-close {
  background: transparent;
  border: 0;
  color: var(--lp-text-dim);
  font-size: 18px;
  cursor: pointer;
  padding: 2px 10px;
  border-radius: var(--lp-radius-sm);
}
.lp-hexdocs-close:hover { color: var(--lp-text); background: var(--lp-border); }
.lp-hexdocs-iframe {
  flex: 1 1 auto;
  width: 100%;
  border: 0;
  background: #fff;
}

/* Pattern reference slide-out — reuses .lp-hexdocs-panel structure. */
/* Help button sits alongside the Pattern input. Push it down by roughly
   one label-line worth of space so the button's top edge lines up with
   the input's top edge (not the sibling label above the input). */
.lp-pattern-help {
  align-self: start;
  padding-top: 20px;
}
.lp-pattern-help-btn {
  background: transparent;
  border: 1px solid var(--lp-border);
  color: var(--lp-text);
  border-radius: var(--lp-radius-sm);
  padding: 8px 14px;
  cursor: pointer;
  font: inherit;
  line-height: 1.3;
}
.lp-pattern-help-btn:hover { background: var(--lp-border); }

.lp-pattern-title { color: var(--lp-text); }
.lp-pattern-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 16px 20px 32px;
}
.lp-pattern-intro {
  color: var(--lp-text-dim);
  font-size: 13px;
  margin: 0 0 16px 0;
}
.lp-pattern-intro a { color: var(--lp-accent); }
.lp-pattern-section { margin-bottom: 20px; }
.lp-pattern-section h3 {
  margin: 0 0 8px 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--lp-text-faint);
  font-weight: 600;
}
.lp-pattern-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  table-layout: fixed;
}
.lp-pattern-table col.lp-col-pattern { width: 100px; }
.lp-pattern-table col.lp-col-example { width: 180px; }
.lp-pattern-table col.lp-col-mf2-pattern { width: 240px; }
.lp-pattern-table td { word-break: break-word; }
.lp-pattern-table th,
.lp-pattern-table td {
  text-align: left;
  vertical-align: top;
  padding: 4px 8px;
  border-bottom: 1px solid var(--lp-border);
}
.lp-pattern-table thead th {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--lp-text-faint);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.lp-pattern-table tbody code {
  background: var(--lp-code-bg, rgba(127,127,127,0.1));
  padding: 1px 6px;
  border-radius: var(--lp-radius-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}
.lp-pattern-example { color: var(--lp-text-dim); }

/* ── Makeup syntax highlighting (Monokai adapted for dark UI) ─── */
.highlight { color: #f8f8f2; background: transparent; }
.highlight .n { color: #f8f8f2; }  /* name */
.highlight .nc { color: #a6e22e; } /* module/class */
.highlight .nf { color: #a6e22e; } /* function */
.highlight .na { color: #a6e22e; } /* attribute */
.highlight .k, .highlight .kc, .highlight .kd,
.highlight .kn, .highlight .kp, .highlight .kr { color: #66d9ef; } /* keywords */
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sa,
.highlight .sb, .highlight .sc, .highlight .dl, .highlight .sd,
.highlight .se, .highlight .sh, .highlight .si, .highlight .sr,
.highlight .ss, .highlight .sx { color: #e6db74; } /* strings/atoms */
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mb,
.highlight .mh, .highlight .mo, .highlight .il { color: #ae81ff; } /* numbers */
.highlight .o, .highlight .ow { color: #f92672; } /* operators */
.highlight .p { color: #f8f8f2; } /* punctuation */
.highlight .c, .highlight .c1, .highlight .cm,
.highlight .cs, .highlight .cp { color: #75715e; } /* comments */
.highlight .no { color: #66d9ef; } /* constants */
.highlight .bp { color: #f8f8f2; } /* builtins */
.highlight .w { }                  /* whitespace — no style needed */

/* Call code card */
.lp-call-code {
  position: relative;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  overflow: hidden;
}
.lp-call-code-text {
  margin: 0;
  padding: 14px 60px 14px 16px;
  font-family: ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.5;
  color: var(--lp-text);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}
.lp-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: var(--lp-space-sm);
  background: var(--lp-surface-2);
  color: var(--lp-text-dim);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-sm);
  padding: 5px 10px;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 120ms, background 120ms, border-color 120ms;
}
.lp-copy-btn:hover {
  color: var(--lp-text);
  background: var(--lp-surface);
  border-color: var(--lp-accent);
}
.lp-copy-btn.copied {
  color: var(--lp-pass);
  border-color: var(--lp-pass);
}
.lp-copy-btn svg { display: block; }

/* Pattern card */
.lp-pattern {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 16px 18px;
  font-family: ui-monospace, monospace;
  font-size: 15px;
  overflow-x: auto;
}
.lp-pattern code { color: var(--lp-text); }

.lp-pattern-map p { margin: 0 0 8px; }

/* Pre / export blocks */
.lp-export {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 10px 12px;
  font-family: ui-monospace, monospace;
  font-size: 11px;
  line-height: 1.5;
  color: var(--lp-text-dim);
  white-space: pre;
  overflow-x: auto;
  margin: 0;
}

/* Metadata table */
.lp-meta-table {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--lp-space-sm) 20px;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 16px 20px;
  margin: 0;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.lp-meta-table dt {
  color: var(--lp-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 11px;
  font-weight: 600;
  padding-top: 2px;
}
.lp-meta-table dd {
  margin: 0;
  color: var(--lp-text);
  min-width: 0;
}
.lp-meta-table dd pre { margin: 0; }

/* Language / Script / Territory row — compact fields so they sit side-by-side */
.lp-lst-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 200px));
  gap: var(--lp-space-md);
}
@media (max-width: 600px) {
  .lp-lst-row { grid-template-columns: 1fr 1fr; }
}

/* U-extensions grid */
.lp-helper { font-size: 12px; margin: 0; }

.lp-ext-title {
  display: flex;
  align-items: center;
  gap: var(--lp-space-sm);
  flex-wrap: wrap;
}

.lp-ext-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--lp-space-sm);
}
.lp-ext-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--lp-space-lg);
  align-items: center;
  padding: 10px 14px;
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  background: var(--lp-surface);
}
.lp-ext-label { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lp-ext-label strong { font-size: 13px; color: var(--lp-text); }
.lp-ext-label code {
  font-size: 11px;
  color: var(--lp-accent);
  background: color-mix(in srgb, var(--lp-accent) 14%, transparent);
  padding: 1px 6px;
  border-radius: var(--lp-radius-sm);
  align-self: flex-start;
}
.lp-ext-desc {
  font-size: 12px;
  color: var(--lp-text-dim);
  line-height: 1.4;
}
.lp-ext-control select, .lp-ext-control input:not([type="checkbox"]) { width: 100%; }

/* Canonical locale card */
.lp-canonical-section h2 { color: var(--lp-accent); }
.lp-canonical-wrapper { display: flex; flex-direction: column; gap: var(--lp-space-md); }
.lp-canonical {
  position: relative;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-lg);
  overflow: hidden;
}
.lp-canonical-text {
  margin: 0;
  padding: 22px 72px 22px 22px;
  font-family: ui-monospace, monospace;
  font-size: 22px;
  font-weight: 600;
  color: var(--lp-text);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
}
.lp-canonical .lp-copy-btn { top: 14px; right: 14px; }

.lp-canon-hint {
  margin: 0 0 12px;
}

.lp-display-name {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.lp-display-name-code {
  font-family: ui-monospace, monospace;
  font-size: 11px;
  color: var(--lp-text-dim);
  word-break: break-word;
}
.lp-display-name-value {
  font-size: 15px;
  color: var(--lp-text);
  font-weight: 500;
}
.lp-display-name-error {
  color: var(--lp-fail);
  font-family: ui-monospace, monospace;
  font-size: 12px;
}

@media (max-width: 700px) {
  .lp-ext-row { grid-template-columns: 1fr; }
}

/* Collation tab */
.lp-coll-header {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--lp-space-md);
  max-width: 640px;
}

.lp-coll-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--lp-space-sm);
}
.lp-coll-option {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--lp-space-lg);
  align-items: center;
  padding: 10px 14px;
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  background: var(--lp-surface);
}
.lp-coll-option-label { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lp-coll-option-label strong { font-size: 13px; color: var(--lp-text); }
.lp-coll-option-desc { font-size: 12px; color: var(--lp-text-dim); line-height: 1.4; }
.lp-coll-option-control select { width: 100%; }

.lp-checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--lp-space-sm);
  font-size: 12px;
  color: var(--lp-text-dim);
  cursor: pointer;
}
.lp-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--lp-accent);
}

.lp-words-link {
  color: var(--lp-accent);
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  cursor: pointer;
}
.lp-words-link:hover { text-decoration-style: solid; }

/* Dates & Times tab */
.lp-dt-top {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, max-content));
  gap: var(--lp-space-md);
  max-width: 920px;
}

/* Helper text shown above controls / tables */
.lp-help-text { margin: 0; font-size: 13px; line-height: 1.5; }

.lp-radio-cards-3col { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lp-checkbox-row { display: flex; align-items: center; gap: var(--lp-space-sm); font-size: 13px; color: var(--lp-text-dim); }

/* Calendars tab — uniform column widths across every table on the tab. */
.lp-cal-table { table-layout: fixed; width: 100%; }
.lp-cal-table th:nth-child(1), .lp-cal-table td:nth-child(1) { width: 120px; }
.lp-cal-table th:nth-child(2), .lp-cal-table td:nth-child(2) { width: 160px; }
.lp-cal-table th:nth-child(3), .lp-cal-table td:nth-child(3) { width: auto; }

/* Messages (MF2) tab */
.lp-mf2-message, .lp-mf2-bindings {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.5;
  background: var(--lp-bg);
  color: var(--lp-text);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-sm);
  padding: 10px 12px;
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
}
.lp-mf2-message:focus, .lp-mf2-bindings:focus {
  outline: none;
  border-color: var(--lp-accent);
}
.lp-mf2-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--lp-space-lg);
  margin: 12px 0 16px;
  flex-wrap: wrap;
}
.lp-mf2-examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--lp-space-sm);
}
.lp-mf2-help-btn { flex-shrink: 0; }
.lp-mf2-example-btn {
  background: transparent;
  border: 1px solid var(--lp-border);
  color: var(--lp-text);
  padding: 6px 12px;
  border-radius: var(--lp-radius-sm);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.lp-mf2-example-btn:hover { background: var(--lp-border); }

.lp-dt-secondary-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr);
  gap: var(--lp-space-md);
  max-width: 220px;
}

/* Cap the locale field to a consistent width across all tabs. */
.lp-dt-top > .lp-field:has(#locale) { max-width: 220px; }
.lp-dt-format-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--lp-space-md);
  margin-top: 16px;
  max-width: 700px;
}
.lp-mono-input { font-family: ui-monospace, monospace; }

/* Collation: sorted result decorations */
.lp-result-toolbar {
  display: flex;
  gap: var(--lp-space-sm);
  margin: 12px 0;
  flex-wrap: wrap;
}
.lp-chip {
  background: var(--lp-surface);
  color: var(--lp-text-dim);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-sm);
  padding: 5px 12px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: color 120ms, background 120ms, border-color 120ms;
}
.lp-chip:hover {
  color: var(--lp-text);
  background: var(--lp-surface-2);
}
.lp-chip.on {
  color: #0b1220;
  background: var(--lp-accent);
  border-color: var(--lp-accent);
  font-weight: 600;
}

.lp-coll-result li {
  display: flex;
  align-items: baseline;
  gap: var(--lp-space-md);
  flex-wrap: wrap;
}
.lp-word { flex: 0 0 auto; }
.lp-delta {
  font-size: 11px;
  font-family: ui-monospace, monospace;
  min-width: 40px;
  color: var(--lp-text-faint);
}
.lp-delta-none { visibility: hidden; }
.lp-delta-up { color: var(--lp-pass); }
.lp-delta-down { color: var(--lp-warn); }
.lp-sort-key {
  flex: 1 1 100%;
  font-family: ui-monospace, monospace;
  font-size: 10px;
  color: var(--lp-text-faint);
  margin-left: 0;
  margin-top: -2px;
  word-break: break-all;
}

/* Pairwise compare */
.lp-compare-widget {
  margin-top: 18px;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 14px 16px;
}
.lp-compare-label {
  font-size: 11px;
  color: var(--lp-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  font-weight: 600;
}
.lp-compare-row {
  display: flex;
  align-items: center;
  gap: var(--lp-space-md);
  flex-wrap: wrap;
}
.lp-compare-row input {
  flex: 1 1 140px;
  min-width: 0;
}
.lp-compare-verdict-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
}
.lp-verdict {
  font-family: ui-monospace, monospace;
  font-size: 20px;
  font-weight: 700;
  color: var(--lp-text-dim);
}
.lp-verdict-lt { color: var(--lp-accent); }
.lp-verdict-gt { color: var(--lp-warn); }
.lp-verdict-eq { color: var(--lp-text); }
.lp-verdict-err { color: var(--lp-fail); }

/* Preset chips */
.lp-preset-chips {
  display: flex;
  gap: var(--lp-space-sm);
  flex-wrap: wrap;
}
.lp-preset-chip {
  background: var(--lp-surface);
  color: var(--lp-text);
  border: 1px solid var(--lp-border);
  border-radius: 999px; /* pill */
  padding: 6px 14px;
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: color 120ms, background 120ms, border-color 120ms;
}
.lp-preset-chip:hover {
  color: var(--lp-accent);
  border-color: var(--lp-accent);
  background: color-mix(in srgb, var(--lp-accent) 10%, var(--lp-surface));
}

/* Seed caption */
.lp-seed-caption {
  background: color-mix(in srgb, var(--lp-accent) 12%, var(--lp-surface));
  border-left: 3px solid var(--lp-accent);
  border-radius: var(--lp-radius-sm);
  padding: 10px 14px;
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--lp-text);
  line-height: 1.5;
}

.lp-reorder-picker {
  display: flex;
  gap: var(--lp-space-sm);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.lp-reorder-picker select { flex: 0 1 280px; }

.lp-secondary-btn, .lp-ghost-btn {
  padding: 6px 12px;
  border-radius: var(--lp-radius-sm);
  font: inherit;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  border: 1px solid var(--lp-border);
}
.lp-secondary-btn {
  background: var(--lp-accent);
  color: #0b1220;
  border-color: var(--lp-accent);
}
.lp-secondary-btn:hover { background: var(--lp-accent-strong); }
.lp-secondary-btn:disabled {
  background: var(--lp-surface-2);
  color: var(--lp-text-faint);
  border-color: var(--lp-border);
  cursor: not-allowed;
}
.lp-ghost-btn {
  background: transparent;
  color: var(--lp-text-dim);
}
.lp-ghost-btn:hover { color: var(--lp-text); background: var(--lp-surface-2); }

.lp-reorder-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--lp-space-sm);
}
.lp-reorder-chip {
  display: flex;
  align-items: center;
  gap: var(--lp-space-md);
  padding: 8px 12px;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
}
.lp-reorder-pos {
  font-family: ui-monospace, monospace;
  color: var(--lp-text-faint);
  font-size: 12px;
  min-width: 24px;
}
.lp-reorder-code {
  flex: 1;
  font-family: ui-monospace, monospace;
  color: var(--lp-accent);
  font-size: 13px;
}
.lp-reorder-actions {
  display: flex;
  gap: var(--lp-space-xs);
}
.lp-reorder-actions button {
  background: transparent;
  border: 1px solid var(--lp-border);
  color: var(--lp-text-dim);
  width: 28px;
  height: 28px;
  border-radius: var(--lp-radius-sm);
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.lp-reorder-actions button:hover { color: var(--lp-text); background: var(--lp-surface-2); }
.lp-reorder-actions button:disabled {
  color: var(--lp-text-faint);
  cursor: not-allowed;
  opacity: 0.4;
}
.lp-reorder-actions .lp-reorder-remove:hover {
  color: var(--lp-fail);
  border-color: var(--lp-fail);
}

.lp-coll-words {
  width: 100%;
  background: var(--lp-bg);
  color: var(--lp-text);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  padding: 10px 12px;
  font-family: ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
}

.lp-coll-result {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-lg);
  padding: 16px 28px;
  font-family: ui-monospace, monospace;
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  counter-reset: coll;
  list-style: none;
  padding-left: 48px;
}
.lp-coll-result li {
  position: relative;
}
.lp-coll-result li::before {
  counter-increment: coll;
  content: counter(coll) ".";
  position: absolute;
  left: -36px;
  width: 28px;
  text-align: right;
  color: var(--lp-text-faint);
  font-size: 12px;
}

@media (max-width: 700px) {
  .lp-coll-option { grid-template-columns: 1fr; }
}

/* Data table */
.lp-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius-md);
  overflow: hidden;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.lp-table thead th {
  text-align: left;
  padding: 10px 14px;
  background: var(--lp-surface-2);
  color: var(--lp-text-dim);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--lp-border);
}
.lp-table tbody td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--lp-border);
  color: var(--lp-text);
  vertical-align: top;
}
.lp-table tbody tr:last-child td { border-bottom: 0; }
.lp-table tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--lp-surface-2) 40%, transparent); }
.lp-table td:first-child { color: var(--lp-text-dim); font-family: inherit; }
.lp-table td code { color: var(--lp-text-dim); font-size: 11px; }
.lp-table-value { font-size: 14px; }

@media (max-width: 700px) {
  main.lp-main { padding: 16px; }
  .lp-result { font-size: 24px; padding: 18px 16px; }
  .lp-meta-table { grid-template-columns: 1fr; gap: 2px 0; }
  .lp-meta-table dd { margin-bottom: 8px; }
}