:root {
  color-scheme: light;
  --bg: #f3f5f1;
  --surface: #ffffff;
  --surface-2: #edf1ec;
  --surface-3: #e4eae4;
  --ink: #17211d;
  --muted: #617069;
  --line: #cfd8d1;
  --line-strong: #aebbb2;
  --brand: #176a52;
  --brand-dark: #0d4938;
  --accent: #d97706;
  --danger: #a3362d;
  --verified: #116149;
  --shadow: 0 14px 42px rgba(25, 45, 36, .11);
  --radius: 14px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  /* Neon HUD tokens. Neutral in light (glow off, field hidden, emphasis = brand);
     the dark theme redefines these to switch on the cyberpunk treatment. */
  --emphasis: var(--brand);
  --grade-ink: var(--ink);
  --profile-top: color-mix(in srgb, var(--verified) 45%, var(--line));
  --accent-soft: var(--accent);
  --amber: var(--accent);
  --glow: 0 0 0 transparent;
  --glow-accent: 0 0 0 transparent;
  --field-opacity: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #05070d;
  --surface: #0b111c;
  --surface-2: #101a2b;
  --surface-3: #16233a;
  --ink: #dbe8f5;
  --muted: #6f89a8;
  --line: #1b2c44;
  --line-strong: #2a415f;
  --brand: #2be6f2;
  --brand-dark: #05d9e8;
  --accent: #a12bff;
  --accent-soft: #c98bff;
  --amber: #ffd200;
  --danger: #ff5c8a;
  --verified: #37e6bf;
  --shadow: 0 18px 48px rgba(0, 0, 0, .55);
  --emphasis: var(--accent);
  --grade-ink: var(--accent);
  --profile-top: color-mix(in srgb, var(--accent) 60%, var(--line));
  --glow: 0 0 12px color-mix(in srgb, var(--brand-dark) 55%, transparent);
  --glow-accent: 0 0 13px color-mix(in srgb, var(--accent) 55%, transparent);
  --field-opacity: 1;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"] {
    color-scheme: dark;
    --bg: #05070d;
    --surface: #0b111c;
    --surface-2: #101a2b;
    --surface-3: #16233a;
    --ink: #dbe8f5;
    --muted: #6f89a8;
    --line: #1b2c44;
    --line-strong: #2a415f;
    --brand: #2be6f2;
    --brand-dark: #05d9e8;
    --accent: #a12bff;
    --accent-soft: #c98bff;
    --amber: #ffd200;
    --danger: #ff5c8a;
    --verified: #37e6bf;
    --shadow: 0 18px 48px rgba(0, 0, 0, .55);
    --emphasis: var(--accent);
    --grade-ink: var(--accent);
    --profile-top: color-mix(in srgb, var(--accent) 60%, var(--line));
    --glow: 0 0 12px color-mix(in srgb, var(--brand-dark) 55%, transparent);
    --glow-accent: 0 0 13px color-mix(in srgb, var(--accent) 55%, transparent);
    --field-opacity: 1;
    --radius: 10px;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; background: var(--bg); color: var(--ink); }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: var(--brand); }
[hidden] { display: none !important; }
.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; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 66px;
  padding: 10px max(16px, calc((100vw - 1500px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 10px; background: var(--brand-dark); color: var(--surface); font: 800 13px/1 ui-monospace, monospace; letter-spacing: -.05em; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; }
.brand small { margin-top: 2px; color: var(--muted); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.top-actions { display: flex; gap: 7px; align-items: center; }
.icon-button, .filter-button, .load-more {
  min-height: 44px;
  padding: 0 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}
.icon-button:hover, .filter-button:hover, .load-more:hover { border-color: var(--line-strong); background: var(--surface-2); }
.offline-banner { position: sticky; top: 66px; z-index: 38; padding: 8px 16px; background: #8a550b; color: white; text-align: center; font-size: 12px; font-weight: 700; }

main { width: min(1500px, 100%); margin: 0 auto; padding: 22px 22px 56px; }

.catalog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: clip; box-shadow: var(--shadow); }
.search-toolbar { padding: 14px; display: grid; grid-template-columns: 1fr auto; gap: 10px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.search-field { position: relative; }
.search-field input { width: 100%; height: 48px; padding: 0 50px 0 15px; border: 1px solid var(--line-strong); border-radius: 9px; outline: none; background: var(--surface); color: var(--ink); font-size: 16px; }
.search-field input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent); }
.search-field kbd { position: absolute; right: 12px; top: 12px; padding: 4px 8px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); background: var(--surface-2); font-size: 10px; }
.filter-button span { min-width: 20px; height: 20px; margin-left: 7px; display: grid; place-items: center; border-radius: 999px; background: var(--brand-dark); color: var(--surface); font-size: 10px; }
.filter-panel { padding: 13px 14px; display: grid; grid-template-columns: repeat(7, minmax(110px, 1fr)) auto; gap: 9px; align-items: end; border-bottom: 1px solid var(--line); }
.filter-panel label { color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.filter-panel select { width: 100%; min-height: 42px; margin-top: 4px; padding: 0 28px 0 9px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); font-size: 11px; letter-spacing: 0; text-transform: none; }
.text-button { min-height: 42px; padding: 0 8px; border: 0; background: transparent; color: var(--brand); font-size: 11px; font-weight: 750; }
.catalog-meta { min-height: 42px; padding: 9px 14px; display: flex; align-items: center; justify-content: space-between; gap: 15px; border-bottom: 1px solid var(--line); }
.catalog-meta p { margin: 0; color: var(--muted); font-size: 12px; }
.catalog-meta strong { color: var(--ink); }
.build-label { color: var(--muted); font-size: 10px; }

.workspace { height: clamp(660px, calc(100dvh - 92px), 1000px); min-height: 0; display: grid; grid-template-columns: minmax(440px, .9fr) minmax(480px, 1.1fr); overflow: hidden; }
.results-panel { min-width: 0; min-height: 0; display: flex; flex-direction: column; overflow: hidden; border-right: 1px solid var(--line); }
.result-list { min-height: 0; flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable; scrollbar-color: var(--line-strong) var(--surface); }
.tool-row { width: 100%; min-height: 88px; padding: 12px 14px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 13px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); text-align: left; }
.tool-row:hover { background: var(--surface-2); }
.tool-row.selected { box-shadow: inset 4px 0 var(--brand); background: color-mix(in srgb, var(--brand) 9%, var(--surface)); }
.tool-main { min-width: 0; }
.tool-main strong { display: block; overflow: hidden; font: 800 14px/1.25 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-overflow: ellipsis; white-space: nowrap; }
.tool-main small { margin-top: 5px; display: -webkit-box; overflow: hidden; color: var(--muted); font-size: 11px; line-height: 1.35; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.row-maker { color: var(--brand); font-size: 11px; font-weight: 700; text-align: right; }
.row-meta { display: flex; gap: 5px; flex-wrap: wrap; }
.load-more { margin: 12px auto; flex: 0 0 auto; }
.loading, .empty-results, .error-state { min-height: 360px; padding: 30px; display: grid; place-items: center; align-content: center; color: var(--muted); text-align: center; }
.loading span { width: 27px; height: 27px; border: 3px solid var(--line); border-top-color: var(--brand); border-radius: 50%; animation: spin .7s linear infinite; }
.loading p, .empty-results p, .error-state p { margin: 12px 0 0; }
@keyframes spin { to { transform: rotate(1turn); } }

.badge, .material-chip { min-height: 24px; padding: 4px 7px; display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-2); color: var(--muted); font-size: 9px; font-weight: 800; line-height: 1; white-space: nowrap; }
.badge.cutting-data { border-color: color-mix(in srgb, var(--verified) 55%, var(--line)); color: var(--verified); }
.material-chip { border-radius: 999px; color: var(--brand); }

.detail-panel { min-width: 0; min-height: 0; max-height: 100%; overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable; background: var(--surface); scrollbar-color: var(--line-strong) var(--surface); }
.detail-empty { min-height: 520px; padding: 40px; display: grid; place-items: center; align-content: center; text-align: center; color: var(--muted); }
.detail-empty > span { font-size: 38px; }
.detail-empty h2 { margin: 10px 0 4px; color: var(--ink); }
.detail-empty p { max-width: 360px; margin: 0; font-size: 12px; line-height: 1.55; }
.mobile-detail-bar { position: sticky; top: 0; z-index: 4; min-height: 50px; padding: 5px 10px; display: none; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); background: var(--surface); }
.back-button { min-height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); color: var(--ink); font-weight: 750; }
.detail-header { padding: 22px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.detail-kicker { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--muted); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.detail-header h2 { margin: 12px 0 0; overflow-wrap: anywhere; font: 850 clamp(20px, 3vw, 30px)/1.15 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: -.035em; }
.detail-maker { margin: 6px 0 0; color: var(--brand); font-weight: 750; }
.detail-description { margin: 15px 0 0; overflow-wrap: anywhere; color: var(--muted); font-size: 13px; line-height: 1.58; }
.detail-selectors { margin-top: 16px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.detail-selectors label { display: grid; gap: 5px; color: var(--muted); font-size: 9px; font-weight: 750; text-transform: uppercase; }
.detail-selectors select { width: 100%; min-height: 42px; padding: 0 9px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface); color: var(--ink); font-size: 11px; text-transform: none; }
.detail-section { padding: 20px 22px; border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.section-heading h3 { margin: 0; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.section-heading span { color: var(--muted); font-size: 10px; }
.spec-grid { margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: var(--line); gap: 1px; }
.spec-grid div { min-width: 0; padding: 10px; background: var(--surface); }
.spec-grid dt { color: var(--muted); font-size: 9px; text-transform: uppercase; }
.spec-grid dd { margin: 5px 0 0; overflow-wrap: anywhere; font-size: 12px; }
.empty-data { padding: 13px; border: 1px dashed var(--line-strong); border-radius: 9px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.empty-data strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 12px; }

.geometry-card { display: grid; grid-template-columns: minmax(170px, .8fr) 1.2fr; gap: 14px; align-items: center; }
.geometry-figure { min-height: 190px; padding: 12px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
.geometry-figure svg { width: min(220px, 100%); height: 170px; overflow: visible; }
.geometry-figure .insert-shape { fill: color-mix(in srgb, var(--brand) 13%, var(--surface)); stroke: var(--brand); stroke-width: 4; }
.geometry-figure .insert-hole { fill: var(--surface); stroke: var(--brand); stroke-width: 3; }
.geometry-figure text { fill: var(--ink); font: 700 12px system-ui, sans-serif; }
.manufacturer-geometry { max-width: 220px; display: grid; gap: 8px; text-align: center; }
.manufacturer-geometry strong { font-size: 14px; }
.manufacturer-geometry span { color: var(--muted); font-size: 11px; line-height: 1.45; }
.geometry-data { display: grid; gap: 7px; }
.geometry-line { padding: 8px 10px; display: flex; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--line); font-size: 11px; }
.geometry-line span { color: var(--muted); }
.geometry-line strong { min-width: 0; max-width: 68%; overflow-wrap: anywhere; text-align: right; }
.geometry-note { margin: 8px 0 0; color: var(--muted); font-size: 9px; line-height: 1.45; }

.material-list, .relationship-list, .source-list, .fact-list { display: grid; gap: 8px; }
.material-row, .relationship, .source-card, .fact-card { padding: 11px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-2); }
.material-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 9px; align-items: start; }
.material-row p { margin: 0; font-size: 12px; }
.material-row small, .relationship small, .source-card p, .fact-card small { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.45; }
.cutting-profile { padding: 13px; border: 1px solid color-mix(in srgb, var(--verified) 45%, var(--line)); border-radius: 10px; background: color-mix(in srgb, var(--verified) 6%, var(--surface)); }
.cutting-profile + .cutting-profile { margin-top: 10px; }
.cutting-head { display: flex; justify-content: space-between; gap: 10px; align-items: start; }
.cutting-head strong { font-size: 12px; }
.cutting-context, .audit-line { margin: 5px 0 0; color: var(--muted); font-size: 10px; line-height: 1.5; }
.cutting-values { margin-top: 11px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.cutting-values div { padding: 9px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); }
.cutting-values span { display: block; color: var(--muted); font-size: 8px; font-weight: 750; text-transform: uppercase; }
.cutting-values b { display: block; margin-top: 4px; font-size: 11px; }
.calculator { margin-top: 11px; padding-top: 11px; border-top: 1px solid var(--line); }
.calculator label { display: grid; grid-template-columns: 1fr 92px; gap: 10px; align-items: center; color: var(--muted); font-size: 10px; }
.calculator input { width: 100%; height: 38px; padding: 0 8px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); color: var(--ink); }
.calculator-output { margin: 8px 0 0; color: var(--ink); font-size: 11px; }
details.audit-details { margin-top: 9px; color: var(--muted); font-size: 10px; }
details.audit-details summary { min-height: 32px; display: flex; align-items: center; cursor: pointer; color: var(--brand); font-weight: 750; }
details.audit-details p { margin: 6px 0 0; line-height: 1.5; }
.relationship { width: 100%; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; color: var(--ink); text-align: left; }
button.relationship:hover { border-color: var(--line-strong); }
.relationship strong { display: block; overflow-wrap: anywhere; font-size: 11px; }
.source-card a, .source-card strong { display: block; overflow-wrap: anywhere; font-size: 11px; font-weight: 750; text-decoration: none; }
.source-card code { overflow-wrap: anywhere; color: var(--muted); font-size: 9px; }
.fact-card { display: grid; grid-template-columns: minmax(110px, .8fr) minmax(0, 1.4fr) auto; gap: 8px; align-items: start; }
.fact-card strong { color: var(--muted); font-size: 10px; }
.fact-card > span { overflow-wrap: anywhere; font-size: 11px; }
.toast { position: fixed; left: 50%; bottom: calc(18px + var(--safe-bottom)); z-index: 100; max-width: calc(100% - 30px); padding: 11px 15px; transform: translateX(-50%); border-radius: 9px; background: var(--ink); color: var(--surface); box-shadow: var(--shadow); font-size: 12px; }

/* ---- Neon HUD treatment ---------------------------------------------------
   Every rule below is token-gated: in the light theme --glow/--glow-accent are
   transparent, --field-opacity is 0, and --emphasis/--grade-ink/--profile-top
   resolve to the existing light values, so light mode renders unchanged. The
   dark theme flips the tokens and the cyberpunk skin switches on. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--field-opacity);
  background:
    radial-gradient(1100px 520px at 82% -6%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 60%),
    radial-gradient(900px 480px at 6% 0%, color-mix(in srgb, var(--brand-dark) 12%, transparent), transparent 62%),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(0, 0, 0, .26) 3px 4px);
}
main { position: relative; z-index: 1; }
.brand-mark { box-shadow: var(--glow); }
.search-field input:focus { box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent), var(--glow); }
.badge.cutting-data { box-shadow: var(--glow); }
.tool-row.selected {
  box-shadow: inset 4px 0 var(--emphasis), var(--glow-accent);
  background: color-mix(in srgb, var(--emphasis) 10%, var(--surface));
}
.detail-header { position: relative; }
.detail-header::before, .detail-header::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  opacity: var(--field-opacity);
  border-color: var(--brand-dark);
  pointer-events: none;
}
.detail-header::before { top: 10px; left: 10px; border-top: 2px solid var(--brand-dark); border-left: 2px solid var(--brand-dark); }
.detail-header::after { bottom: 10px; right: 10px; border-bottom: 2px solid var(--brand-dark); border-right: 2px solid var(--brand-dark); }
.detail-header h2 { text-shadow: var(--glow); }
.detail-maker { text-shadow: var(--glow); }
.cutting-profile { border-top-color: var(--profile-top); }
.cutting-head strong { color: var(--grade-ink); text-shadow: var(--glow-accent); }
.cutting-values b, .cutting-values span, .spec-grid dd, .geometry-line strong { font-variant-numeric: tabular-nums; }

@media (max-width: 1120px) {
  .filter-panel { grid-template-columns: repeat(4, minmax(120px, 1fr)); }
  .workspace { grid-template-columns: minmax(380px, .85fr) minmax(420px, 1.15fr); }
}

@media (max-width: 760px) {
  .desktop-only { display: none; }
  .topbar { min-height: 62px; padding-inline: 12px; }
  .brand-mark { width: 38px; height: 38px; }
  .brand small { display: none; }
  .icon-button { min-width: 44px; padding-inline: 9px; font-size: 10px; }
  .offline-banner { top: 62px; }
  main { padding: 10px 10px 28px; }
  .filter-panel { display: none; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filter-panel.open { display: grid; }
  .workspace { height: auto; display: block; min-height: 520px; max-height: none; overflow: visible; }
  .results-panel { border-right: 0; }
  .result-list { overflow: visible; }
  .detail-panel {
    position: fixed;
    inset: 0;
    z-index: 70;
    display: none;
    padding-bottom: var(--safe-bottom);
    overflow: auto;
  }
  .detail-panel.open { display: block; }
  .mobile-detail-bar { display: flex; }
  body.detail-open { overflow: hidden; }
  .geometry-card { grid-template-columns: 1fr; }
}

@media (max-width: 470px) {
  .brand strong { font-size: 14px; }
  #theme-button { font-size: 0; }
  #theme-button::after { content: "◐"; font-size: 17px; }
  #unit-button { max-width: 78px; line-height: 1.1; }

  .search-toolbar { grid-template-columns: minmax(0, 1fr) auto; padding: 10px; }
  .search-field kbd { display: none; }
  .search-field input { padding-right: 10px; }
  .filter-button { padding-inline: 10px; }
  .filter-panel { grid-template-columns: 1fr; }
  .build-label { display: none; }
  .catalog-meta { min-height: 38px; }
  .tool-row { min-height: 92px; padding: 12px 11px; }
  .detail-header, .detail-section { padding: 17px 15px; }
  .detail-panel, .detail-header, .detail-section, .geometry-card, .geometry-data { min-width: 0; max-width: 100%; }
  .detail-selectors { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: 1fr; }
  .material-row { grid-template-columns: auto minmax(0, 1fr); }
  .material-row > .badge { grid-column: 2; justify-self: start; }
  .cutting-values { grid-template-columns: 1fr; }
  .fact-card { grid-template-columns: 1fr auto; }
  .fact-card > span { grid-column: 1 / -1; grid-row: 2; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}