/* FabOps Copilot frontend. Direction A, Fab Control Room. */

:root {
  --bg-base: #0a0e14;
  --bg-grid: #161c28;
  --surface: #11161f;
  --surface-elev: #0d121a;
  --border: #1c2433;
  --fg-primary: #e6edf3;
  --fg-secondary: #a8c0d6;
  --fg-muted: #7d8590;
  --fg-faint: #525d6b;

  --accent-orange: #fb923c;
  --accent-orange-bg: #1f140a;
  --accent-orange-border: #2a1d10;
  --accent-green: #3ddc97;
  --accent-green-bg: #0a1f15;
  --accent-green-border: #1a3329;
  --accent-red: #f87171;
  --accent-red-bg: #1f0a0a;
  --accent-purple: #a78bfa;
  --accent-purple-bg: #13091f;
  --accent-blue: #6aa4ff;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, 'Cascadia Code', monospace;

  --container: 880px;
  --pad-x: 36px;
  --radius-card: 10px;
  --radius-chip: 4px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg-base);
  color: var(--fg-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-base);
  background-image: radial-gradient(circle at 1px 1px, var(--bg-grid) 1px, transparent 0);
  background-size: 18px 18px;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ====================== NAV ====================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad-x);
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.nav-left { display: flex; align-items: center; gap: 14px; }
.nav-status {
  display: flex; align-items: center; gap: 10px;
}
.led {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green), 0 0 2px var(--accent-green);
}
.led.pulse { animation: pulse 1.5s infinite; }
.nav-status-label {
  font-family: var(--font-mono);
  color: var(--accent-green);
  font-size: 10px;
  letter-spacing: 1.8px;
  font-weight: 600;
}
.nav-divider { width: 1px; height: 14px; background: var(--border); }
.nav-meta {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 0.8px;
}
.nav-links {
  display: flex;
  gap: 24px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--fg-muted);
}
.nav-links a {
  cursor: pointer;
  transition: color 120ms ease;
}
.nav-links a:hover { color: var(--fg-secondary); }

/* ====================== HERO ====================== */

.hero {
  padding: 64px var(--pad-x) 32px;
  max-width: var(--container);
  margin: 0 auto;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  font-size: 11px;
  letter-spacing: 1.5px;
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-headline {
  font-family: var(--font-sans);
  color: var(--fg-primary);
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -1.2px;
  line-height: 1.1;
  margin: 0 0 18px;
}
.hero-subline {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 13px;
  letter-spacing: 0.3px;
  line-height: 1.6;
}

/* ====================== CARD BASE ====================== */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px 24px;
}
.card-label {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 1.5px;
}
.card-stack {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.section-spacer { height: 16px; }

/* ====================== QUERY PANEL ====================== */

.query-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.query-panel-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.query-hint {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
}
.query-panel textarea {
  width: 100%;
  min-height: 64px;
  padding: 18px;
  background: transparent;
  color: var(--fg-primary);
  border: 1px solid transparent;
  outline: none;
  resize: none;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  transition: border-color 200ms ease;
}
.query-panel textarea::placeholder {
  color: var(--fg-faint);
}
.query-panel-foot {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.chips {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.chips-label {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 1px;
  margin-right: 4px;
}
.chip {
  background: var(--bg-base);
  border: 1px solid var(--border);
  color: var(--fg-secondary);
  padding: 5px 10px;
  border-radius: var(--radius-chip);
  font-family: var(--font-mono);
  font-size: 10px;
  cursor: pointer;
  transition: all 120ms ease;
}
.chip:hover {
  border-color: var(--fg-faint);
  color: var(--fg-primary);
}
.chip.flash {
  background: var(--accent-orange);
  color: var(--bg-base);
  border-color: var(--accent-orange);
}
.browse-link {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  cursor: pointer;
  padding: 5px 6px;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
  user-select: none;
}
.browse-link:hover {
  color: var(--accent-orange);
  border-bottom-color: var(--accent-orange);
}
.run-btn {
  background: var(--accent-green);
  color: var(--bg-base);
  border: none;
  padding: 8px 18px;
  border-radius: 5px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.1px;
  cursor: pointer;
  transition: filter 120ms ease;
}
.run-btn:hover { filter: brightness(1.1); }
.run-btn:disabled {
  background: var(--border);
  color: var(--fg-faint);
  cursor: not-allowed;
}
.synthetic-label {
  font-family: var(--font-sans);
  color: var(--fg-faint);
  font-size: 11px;
  margin-top: 10px;
  font-style: italic;
  line-height: 1.5;
}

/* ====================== EXECUTION PANEL (loading + audit) ====================== */

.exec-panel { padding: 18px 24px 20px; }
.exec-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.exec-status {
  display: flex;
  align-items: center;
  gap: 8px;
}
.exec-status-text {
  font-family: var(--font-mono);
  color: var(--accent-green);
  font-size: 10px;
  letter-spacing: 0.8px;
}
.progress {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 6px;
  margin-bottom: 16px;
}
.progress-segment {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  transition: background 240ms ease, box-shadow 240ms ease;
}
.progress-segment.active {
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}
.progress-segment.done {
  background: var(--accent-green);
}
.node-log {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
}
.node-row {
  display: flex;
  align-items: baseline;
  color: var(--fg-faint);
}
.node-row .glyph {
  display: inline-block;
  width: 16px;
  flex-shrink: 0;
}
.node-row .name {
  flex: 1;
}
.node-row .meta {
  color: var(--fg-faint);
  font-size: 10px;
  text-align: right;
}
.node-row.done { color: var(--accent-green); }
.node-row.active { color: var(--accent-orange); }
.node-row.error { color: var(--accent-red); }

/* Collapsed audit-trail header */
.audit-collapsed {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}
.audit-collapsed-meta {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 11px;
}
.audit-body { margin-top: 14px; }
.audit-body[hidden] { display: none; }

/* ====================== QUERY ECHO ====================== */

.query-echo {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px var(--pad-x) 18px;
}
.query-echo-label {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}
.query-echo-body {
  font-family: var(--font-mono);
  color: var(--fg-secondary);
  font-size: 13px;
  line-height: 1.55;
}

/* ====================== DIAGNOSIS CARD ====================== */

.diagnosis { padding: 24px 26px; }
.diagnosis-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.diagnosis-paragraph {
  font-family: var(--font-sans);
  color: var(--fg-primary);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.3px;
  line-height: 1.4;
}
.driver-chip {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  vertical-align: 2px;
}
.driver-chip.policy {
  background: var(--accent-orange-bg);
  color: var(--accent-orange);
}
.driver-chip.supply {
  background: var(--accent-red-bg);
  color: var(--accent-red);
}
.driver-chip.demand {
  background: var(--accent-purple-bg);
  color: var(--accent-purple);
}
.driver-chip.none {
  background: var(--accent-green-bg);
  color: var(--accent-green);
}
.diag-highlight {
  color: var(--accent-orange);
  font-weight: 600;
}
.stat-row {
  display: flex;
  gap: 32px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.stat-col .label {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 9px;
  letter-spacing: 1.2px;
  margin-bottom: 4px;
}
.stat-col .value {
  font-family: var(--font-mono);
  color: var(--fg-primary);
  font-size: 15px;
}
.stat-col .value .qualifier {
  color: var(--fg-faint);
  font-size: 11px;
  margin-left: 4px;
}

/* ====================== ACTION CARD ====================== */

.action { padding: 22px 26px; }
.action-head {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}
.action-headline {
  font-family: var(--font-sans);
  color: var(--fg-primary);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.2px;
}
.action-rationale {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.55;
}

/* ====================== CITATIONS CARD ====================== */

.citations { padding: 20px 24px; }
.citations-head {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 1.5px;
  margin-bottom: 14px;
}
.citation-row { padding: 14px 0; }
.citation-row + .citation-row { border-top: 1px solid var(--border); }
.citation-row:first-of-type { padding-top: 0; }
.citation-row:last-of-type { padding-bottom: 0; }
.citation-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 5px;
  flex-wrap: wrap;
}
.source-chip {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  border: 1px solid var(--border);
  padding: 1px 7px;
  border-radius: 3px;
  letter-spacing: 0.5px;
}
.citation-pointer {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
}
.citation-pointer a {
  color: inherit;
  border-bottom: 1px solid transparent;
}
.citation-pointer a:hover {
  border-bottom-color: var(--fg-faint);
}
.citation-excerpt {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 13px;
  line-height: 1.5;
}
.citations-empty {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 11px;
  font-style: italic;
}

/* ====================== ERROR STATE ====================== */

.error-card { padding: 22px 26px; }
.error-card .label {
  font-family: var(--font-mono);
  color: var(--accent-red);
  font-size: 10px;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
.error-card .body {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 14px;
  line-height: 1.5;
}

/* ====================== MODAL ====================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 20, 0.85);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 64px 24px 24px;
  z-index: 100;
  overflow-y: auto;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--surface-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  max-width: 680px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}
.modal-head {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-head-eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  font-size: 10px;
  letter-spacing: 1.5px;
  font-weight: 600;
}
.modal-head-title {
  font-family: var(--font-sans);
  color: var(--fg-primary);
  font-size: 18px;
  font-weight: 600;
  margin-top: 2px;
}
.modal-close {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--fg-primary); }
.modal-section {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border);
}
.modal-section:last-child { border-bottom: none; }
.modal-section-label {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}
.modal-paragraph {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 14px;
  line-height: 1.65;
}
.driver-list { display: grid; gap: 10px; margin-top: 4px; }
.driver-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.driver-row .driver-chip {
  flex-shrink: 0;
  min-width: 96px;
  text-align: center;
  font-size: 10px;
  vertical-align: 0;
}
.driver-row .desc {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 13px;
  line-height: 1.55;
}
.driver-row .desc strong {
  color: var(--fg-primary);
  font-weight: 600;
}
.graph-block {
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-secondary);
  line-height: 1.85;
  white-space: pre;
  overflow-x: auto;
}
.graph-block .num { color: var(--fg-faint); }
.graph-block .comment { color: var(--fg-faint); }
.graph-caption {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: 12px;
  margin-top: 10px;
  line-height: 1.55;
}
.provenance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.provenance-card {
  border-radius: 6px;
  padding: 12px 14px;
}
.provenance-card.real {
  background: var(--accent-green-bg);
  border: 1px solid var(--accent-green-border);
}
.provenance-card.synthetic {
  background: #1f1408;
  border: 1px solid #332210;
}
.provenance-card .label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 6px;
}
.provenance-card.real .label { color: var(--accent-green); }
.provenance-card.synthetic .label { color: var(--accent-orange); }
.provenance-card .desc {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 12px;
  line-height: 1.5;
}

/* ====================== FULL CATALOG MODAL ====================== */

.modal.modal-wide {
  max-width: 780px;
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.catalog-search {
  flex: 1;
  min-width: 240px;
}
.catalog-search-input {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border);
  color: var(--fg-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 9px 12px;
  border-radius: 5px;
  outline: none;
  transition: border-color 120ms ease;
}
.catalog-search-input::placeholder {
  color: var(--fg-faint);
}
.catalog-search-input:focus {
  border-color: var(--accent-orange);
}
.catalog-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: 10px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}
.catalog-toggle input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 30px;
  height: 16px;
  background: var(--border);
  border-radius: 8px;
  position: relative;
  cursor: pointer;
  transition: background 120ms ease;
  margin: 0;
}
.catalog-toggle input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: var(--fg-muted);
  border-radius: 50%;
  transition: transform 120ms ease, background 120ms ease;
}
.catalog-toggle input[type="checkbox"]:checked {
  background: var(--accent-orange-bg);
}
.catalog-toggle input[type="checkbox"]:checked::after {
  transform: translateX(14px);
  background: var(--accent-orange);
}
.catalog-count {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.8px;
  margin-left: auto;
}

.catalog-body {
  max-height: 60vh;
  overflow-y: auto;
  padding: 8px 0;
}
.catalog-body::-webkit-scrollbar {
  width: 8px;
}
.catalog-body::-webkit-scrollbar-track {
  background: transparent;
}
.catalog-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
.catalog-body::-webkit-scrollbar-thumb:hover {
  background: var(--fg-faint);
}

.catalog-empty {
  padding: 40px 28px;
  text-align: center;
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: 13px;
  line-height: 1.6;
}
.catalog-empty code {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  background: var(--accent-orange-bg);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px;
}

.catalog-row {
  border-bottom: 1px solid var(--border);
}
.catalog-row:last-child { border-bottom: none; }
.catalog-row-head {
  display: grid;
  grid-template-columns: 120px auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 12px 28px;
  cursor: pointer;
  transition: background 120ms ease;
}
.catalog-row-head:hover {
  background: #0d1319;
}
.catalog-row-status {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.8px;
  padding: 3px 8px;
  border-radius: 3px;
  text-align: center;
  justify-self: start;
  min-width: 112px;
}
.catalog-row-status.policy {
  background: var(--accent-orange-bg);
  color: var(--accent-orange);
}
.catalog-row-status.supply {
  background: var(--accent-red-bg);
  color: var(--accent-red);
}
.catalog-row-status.demand {
  background: var(--accent-purple-bg);
  color: var(--accent-purple);
}
.catalog-row-status.healthy {
  background: var(--surface);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 2px 7px;
}
.catalog-row-partid {
  font-family: var(--font-mono);
  color: var(--fg-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px dashed transparent;
  transition: background 120ms ease, border-color 120ms ease;
}
.catalog-row-partid:hover {
  background: var(--accent-orange-bg);
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}
.catalog-row-meta {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.3px;
}
.catalog-row-expand {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 11px;
  transition: transform 120ms ease, color 120ms ease;
}
.catalog-row.open .catalog-row-expand {
  color: var(--accent-orange);
  transform: rotate(90deg);
}

.catalog-row-fabs {
  padding: 4px 28px 14px 148px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.catalog-row-fabs[hidden] { display: none; }
.catalog-fab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
  transition: border-color 120ms ease;
  text-align: left;
  font: inherit;
  color: inherit;
}
.catalog-fab:hover {
  border-color: var(--accent-orange);
}
.catalog-fab-name {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 12px;
  flex: 1;
}
.catalog-fab-stock {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.3px;
}
.catalog-fab-stock.zero {
  color: var(--accent-red);
}

.catalog-footer {
  padding: 14px 28px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.catalog-footer strong {
  color: var(--fg-secondary);
  font-weight: 600;
}

@media (max-width: 720px) {
  .catalog-row-head {
    grid-template-columns: auto auto 1fr;
    gap: 10px;
    padding: 10px 18px;
  }
  .catalog-row-meta { display: none; }
  .catalog-row-fabs {
    grid-template-columns: 1fr 1fr;
    padding: 4px 18px 12px 18px;
  }
  .catalog-toolbar { padding: 14px 18px; }
  .catalog-footer { padding: 12px 18px; }
}

/* ====================== BROWSE PARTS MODAL ====================== */

.browse-group {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
}
.browse-group:last-child { border-bottom: none; }
.browse-group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.browse-group-count {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.8px;
}
.browse-group-desc {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 12px;
}
.browse-rows {
  display: grid;
  gap: 2px;
}
.browse-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 10px 12px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
  text-align: left;
  font: inherit;
  color: inherit;
}
.browse-row:hover {
  border-color: var(--accent-orange);
  background: #0d1319;
}
.browse-row .part-id {
  font-family: var(--font-mono);
  color: var(--fg-primary);
  font-size: 12px;
  font-weight: 600;
}
.browse-row .fab {
  font-family: var(--font-sans);
  color: var(--fg-secondary);
  font-size: 12px;
}
.browse-row .signal {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 10px;
  letter-spacing: 0.3px;
}
.browse-row .arrow {
  font-family: var(--font-mono);
  color: var(--fg-faint);
  font-size: 13px;
}
.browse-row:hover .arrow { color: var(--accent-orange); }

@media (max-width: 600px) {
  .browse-row {
    grid-template-columns: 1fr auto;
    gap: 4px 10px;
  }
  .browse-row .signal { grid-column: 1 / -1; }
  .browse-row .arrow { grid-row: 1; grid-column: 2; }
}

/* ====================== ANIMATIONS ====================== */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ====================== UTILITY ====================== */

[hidden] { display: none !important; }

@media (max-width: 720px) {
  :root {
    --pad-x: 20px;
  }
  .hero-headline { font-size: 30px; letter-spacing: -0.6px; }
  .nav-meta, .nav-divider { display: none; }
  .nav-links { gap: 16px; font-size: 11px; }
  .stat-row { gap: 18px; }
  .provenance-grid { grid-template-columns: 1fr; }
}