:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef3fb;
  --ink: #172033;
  --muted: #667085;
  --line: #d8e0ec;
  --accent: #2357d9;
  --accent-soft: #e8efff;
  --good: #12805c;
  --good-soft: #e7f6ef;
  --warn: #a86500;
  --warn-soft: #fff4db;
  --danger: #ba2f45;
  --danger-soft: #ffe8ed;
  --barter: #4d5f7a;
  --money: #2357d9;
  --topup: #a86500;
  --mono: ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

code {
  padding: 0.1rem 0.32rem;
  border-radius: 6px;
  background: var(--surface-soft);
  font-family: var(--mono);
  font-size: 0.86em;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  padding: 0.9rem 1.5rem;
}

.top-row,
.brand,
.nav-links,
.toolbar,
.card-title-row,
.table-actions,
.chain-card-head,
.chain-meta,
.step-row,
.cycle-caption,
.reserved-summary-row,
.company-row {
  display: flex;
  align-items: center;
}

.top-row {
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  gap: 0.75rem;
  color: var(--ink);
}

.brand-logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-weight: 800;
}

.brand-tagline {
  color: var(--muted);
  font-size: 0.78rem;
}

.nav-links {
  gap: 0.3rem;
  flex-wrap: wrap;
}

.nav-link {
  border-radius: 999px;
  color: var(--muted);
  padding: 0.45rem 0.8rem;
  font-weight: 650;
}

.nav-link:hover,
.nav-link--active {
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(560px, 1.35fr);
  gap: 1rem;
  padding: 1rem 1.5rem 2rem;
}

.layout--single {
  display: block;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem;
}

.panel--full {
  max-width: 1240px;
  margin: 0 auto;
}

.panel--left,
.panel--right {
  min-width: 0;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: 16px;
  background: var(--surface-soft);
}

.hero h1 {
  margin: 0.15rem 0 0.4rem;
  font-size: clamp(1.35rem, 2vw, 2rem);
}

.eyebrow,
.section-title {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.subtitle,
.empty-hint,
.foot {
  color: var(--muted);
}

.toolbar {
  gap: 0.5rem;
  flex-wrap: wrap;
}

.toolbar-field {
  display: grid;
  gap: 0.2rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.toolbar-field input {
  min-width: 18rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  padding: 0.5rem 0.6rem;
}

.catalog-hint {
  color: var(--accent);
  font-family: var(--mono);
}

.catalog-picker {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(180px, 1fr) auto;
  gap: 0.5rem;
  align-items: center;
}

.catalog-selected {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
  padding: 0.45rem 0.6rem;
  display: flex;
  gap: 0.45rem;
  align-items: center;
  flex-wrap: wrap;
}

.catalog-source-note {
  grid-column: 1 / -1;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
  padding: 0.45rem 0.6rem;
  overflow-wrap: anywhere;
}

.lot-catalog-source {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.lot-catalog-search {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.45rem;
}

.catalog-search-row--inline {
  margin: 0;
  grid-template-columns: minmax(180px, 1fr) 110px;
}

.lot-catalog-results {
  display: grid;
  gap: 0.35rem;
  max-height: 230px;
  overflow: auto;
}

.lot-catalog-option {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 0.55rem;
  align-items: center;
  min-height: 42px;
  padding: 0.45rem 0.6rem;
  text-align: left;
}

.lot-catalog-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.lot-catalog-option small {
  display: block;
  color: var(--muted);
  margin-top: 0.1rem;
  overflow-wrap: anywhere;
}

.catalog-active {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
  padding: 0.6rem;
}

.catalog-search-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 140px;
  gap: 0.5rem;
  margin: 0.8rem 0;
}

.catalog-search-row input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  padding: 0.5rem 0.6rem;
}

.catalog-node-list {
  display: grid;
  gap: 0.55rem;
  max-height: 420px;
  overflow: auto;
}

.catalog-node-row {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  padding: 0.7rem;
  display: grid;
  gap: 0.35rem;
}

.catalog-node-main {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  flex-wrap: wrap;
}

.catalog-attrs {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
  margin: 0;
  overflow-wrap: anywhere;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 0.42rem 0.75rem;
}

.btn:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.btn-danger {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-tiny {
  min-height: 28px;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

.select,
.inline-form input,
.inline-form select,
.json-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 0.55rem 0.65rem;
}

.inline-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.inline-form label {
  display: grid;
  gap: 0.25rem;
  color: var(--muted);
  font-weight: 700;
}

.inline-form .btn {
  align-self: end;
}

.error {
  border: 1px solid var(--danger);
  border-radius: 12px;
  background: var(--danger-soft);
  color: var(--danger);
  padding: 0.65rem 0.8rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(360px, 1.2fr) minmax(280px, 0.8fr);
  gap: 1rem;
}

.dashboard-card,
.entity-card,
.chain-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
}

.kpi-row,
.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin: 0.8rem 0 1rem;
}

.kpi,
.summary-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 0.75rem;
}

.kpi-label,
.summary-item dt {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.kpi-value,
.summary-item dd {
  margin: 0.15rem 0 0;
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 850;
}

.kpi--accent .kpi-value { color: var(--accent); }
.kpi--good .kpi-value { color: var(--good); }
.kpi--warn .kpi-value { color: var(--warn); }
.kpi--danger .kpi-value { color: var(--danger); }

.data-table {
  width: 100%;
  border: 1px solid var(--line);
  border-collapse: collapse;
  border-radius: 14px;
  overflow: hidden;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.7rem;
  text-align: left;
}

.data-table th {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.table-actions {
  gap: 0.35rem;
  flex-wrap: wrap;
}

.rating-score,
.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.18rem 0.5rem;
  background: var(--surface-soft);
  color: var(--muted);
  font-weight: 800;
  font-size: 0.78rem;
}

.rating-score,
.pill--accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.pill--good {
  background: var(--good-soft);
  color: var(--good);
}

.pill--warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.pill--muted {
  background: var(--surface-soft);
}

.pill-dot,
.legend-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  margin-right: 0.35rem;
  background: currentColor;
}

.guide-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.guide-list li + li {
  margin-top: 0.5rem;
}

.company-row {
  width: 100%;
  gap: 0.45rem;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  margin-bottom: 0.45rem;
  padding: 0.55rem 0.65rem;
  text-align: left;
}

.company-row:hover,
.company-row:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.entity-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin: 0 0 0.75rem;
}

.entity-id {
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 850;
}

.entity-title-hint {
  color: var(--muted);
  font-size: 0.84rem;
}

.entity-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem 0.8rem;
}

.entity-summary dt {
  color: var(--muted);
  font-size: 0.76rem;
}

.entity-summary dd {
  margin: 0;
  font-weight: 750;
}

.lot-block {
  margin-top: 0.8rem;
}

.lot-block h4 {
  margin: 0 0 0.45rem;
}

.lot-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 0.45rem;
  padding: 0.55rem;
}

.lot-card--offer {
  background: var(--good-soft);
}

.lot-card--demand {
  background: var(--accent-soft);
}

.lot-card-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.lot-resource {
  font-weight: 850;
}

.lot-id,
.lot-qty,
.step-tail,
.chain-signature {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.chains-root {
  display: grid;
  gap: 1rem;
}

.chain-card--best {
  border-color: var(--accent);
}

.chain-card-head {
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.chain-card h3 {
  margin: 0;
}

.chain-meta {
  gap: 0.4rem;
  flex-wrap: wrap;
  margin: 0.7rem 0;
}

.chain-meta-pill {
  border-radius: 999px;
  background: var(--surface-soft);
  padding: 0.2rem 0.55rem;
  color: var(--muted);
}

.chain-meta-pill strong {
  color: var(--ink);
  margin-right: 0.35rem;
}

.steps {
  display: grid;
  gap: 0.45rem;
  list-style: none;
  margin: 0.8rem 0;
  padding: 0;
}

.steps li {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.55rem;
}

.step-row {
  gap: 0.35rem;
  flex-wrap: wrap;
}

.step-entity {
  font-weight: 850;
}

.step-resource {
  color: var(--accent);
  font-weight: 800;
}

.cycle-diagram-wrap {
  margin: 0.7rem 0;
}

.cycle-svg {
  width: 100%;
  max-height: 360px;
}

.cycle-edge {
  stroke-width: 2.5;
  stroke-linecap: round;
}

.cycle-edge--barter { stroke: var(--barter); }
.cycle-edge--money { stroke: var(--money); stroke-dasharray: 6 4; }
.cycle-edge--topup { stroke: var(--topup); stroke-dasharray: 10 4; }

.cycle-edge-label {
  fill: var(--ink);
  font-size: 11px;
  font-weight: 750;
}

.cycle-edge-label--money { fill: var(--money); }
.cycle-edge-label--topup { fill: var(--topup); }

.cycle-edge-label-bg {
  fill: rgba(255, 255, 255, 0.9);
  stroke: var(--line);
}

.cycle-node--clickable {
  cursor: pointer;
}

.cycle-node-circle {
  fill: #fff;
  stroke: var(--line);
  stroke-width: 2;
}

.cycle-node--clickable:hover .cycle-node-circle,
.cycle-node--clickable:focus .cycle-node-circle {
  stroke: var(--accent);
  stroke-width: 3;
}

.cycle-node-label {
  fill: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 850;
}

.cycle-caption {
  gap: 0.7rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.82rem;
}

.legend-dot--barter { background: var(--barter); }
.legend-dot--money { background: var(--money); }
.legend-dot--topup { background: var(--topup); }

.reserved-summary {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.reserved-summary-row {
  gap: 0.45rem;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.5rem 0.65rem;
}

.generate-result {
  margin-top: 0.8rem;
}

.generate-result.is-visible {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem;
}

.generate-result-head {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.generate-result-key {
  font-weight: 850;
}

.generate-result-explain {
  color: var(--muted);
}

.entity-focus {
  min-height: 5rem;
}

.foot {
  margin: 1.5rem 0;
  text-align: center;
}

@media (max-width: 980px) {
  .layout,
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    display: block;
  }

  .toolbar {
    margin-top: 0.8rem;
  }
}

@media (max-width: 640px) {
  .top,
  .layout {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
  }

  .inline-form {
    grid-template-columns: 1fr;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}

/* New single-shell Demo UI */
.app-shell {
  display: grid;
  gap: 1rem;
  padding: 1rem 1.5rem 2rem;
}

.app-section {
  scroll-margin-top: 88px;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-head h2 {
  margin: 0 0 0.3rem;
  font-size: clamp(1.15rem, 1.8vw, 1.55rem);
}

.compact-form {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.compact-form label {
  display: grid;
  gap: 0.2rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.compact-form input {
  width: 8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  padding: 0.5rem 0.6rem;
}

.dashboard-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.policy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.policy-card {
  align-content: start;
}

.policy-list,
.policy-flow {
  margin: 0;
  padding-left: 1.2rem;
}

.policy-list li,
.policy-flow li {
  margin: 0.45rem 0;
}

.policy-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-left: 0;
  list-style: none;
}

.policy-flow li {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  font-family: var(--mono);
  font-size: 0.82rem;
  margin: 0;
  padding: 0.32rem 0.55rem;
}

.policy-contract {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.5rem 0.75rem;
  margin: 0;
}

.policy-contract dt {
  color: var(--muted);
  font-weight: 800;
}

.policy-contract dd {
  margin: 0;
}

.policy-code {
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  padding: 0.75rem;
}

.policy-code code {
  padding: 0;
  background: transparent;
  white-space: pre;
}

.stack-list {
  display: grid;
  gap: 0.55rem;
  max-height: 520px;
  overflow: auto;
}

.list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.list-row p {
  margin: 0.2rem 0 0;
}

.chip-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
  padding: 0.35rem 0.65rem;
}

.chip--danger {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.chip--active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.chain-groups {
  display: grid;
  gap: 1rem;
}

.chain-length-group {
  display: grid;
  gap: 0.75rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-soft);
}

.selected-panel {
  margin-top: 1rem;
}

.link-button {
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 0;
}

.link-button:hover {
  text-decoration: underline;
}

.table-wrap {
  margin-top: 1rem;
  overflow: auto;
}

.histogram {
  display: grid;
  gap: 0.55rem;
}

.histogram-bar {
  display: grid;
  grid-template-columns: 5rem minmax(120px, 1fr) 3rem;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  padding: 0.55rem;
  text-align: left;
}

.histogram-bar--active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.histogram-label {
  color: var(--muted);
  font-weight: 800;
}

.histogram-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-soft);
}

.histogram-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.detail-card {
  min-height: 160px;
}

.toast-root {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  display: grid;
  gap: 0.55rem;
  width: min(420px, calc(100vw - 2rem));
}

.toast {
  display: grid;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 16px 40px rgba(23, 32, 51, 0.18);
  padding: 0.8rem 0.9rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast strong {
  font-size: 0.82rem;
}

.toast span {
  color: var(--muted);
}

.toast--success {
  border-left-color: var(--good);
}

.toast--error {
  border-left-color: var(--danger);
}

.toast--closing {
  opacity: 0;
  transform: translateY(8px);
}

@media (max-width: 920px) {
  .section-head,
  .hero,
  .list-row {
    flex-direction: column;
    align-items: stretch;
  }

  .dashboard-grid--two,
  .policy-grid {
    grid-template-columns: 1fr;
  }

  .app-shell {
    padding: 0.75rem;
  }
}