:root {
  color-scheme: light;
  --app-bg: linear-gradient(180deg, #fafafa 0%, #f3f4f6 100%);
  --app-surface: #ffffff;
  --app-surface-muted: #f7f7f8;
  --app-border: rgba(0, 0, 0, 0.12);
  --app-border-strong: rgba(0, 0, 0, 0.22);
  --app-shadow: 0 18px 50px rgba(0, 0, 0, 0.06);
  --app-shadow-sm: 0 10px 24px rgba(0, 0, 0, 0.06);
  --app-radius: 16px;
  --app-radius-sm: 12px;
  --app-accent: #2563eb;
  --app-accent-soft: rgba(37, 99, 235, 0.08);
  --app-accent-border: rgba(37, 99, 235, 0.38);
  --app-focus: rgba(37, 99, 235, 0.55);

  /* Use a subtle blue focus ring for accessibility. */
  --wa-color-focus: var(--app-accent);
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--wa-font-family-sans, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif);
  background: var(--app-bg);
  color: #111827;
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 18px 36px;
  display: grid;
  gap: 16px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: grid;
  gap: 4px;
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 0;
  color: var(--wa-color-text-weak, #6b7280);
  font-size: 13px;
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.toolbar wa-input {
  min-width: min(520px, 92vw);
  flex: 1 1 320px;
}

.toolbar wa-button {
  flex: 0 0 auto;
}

.layout {
  height: min(72vh, 720px);
  height: min(72dvh, 720px);
  border-radius: var(--app-radius);
  overflow: hidden;
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  box-shadow: var(--app-shadow);
}

.layout wa-split-panel {
  height: 100%;
}

.panel {
  height: 100%;
  padding: 14px;
  box-sizing: border-box;
  min-height: 0;
}

.panel wa-card {
  height: 100%;
  min-height: 0;
}

.panel wa-card::part(header) {
  background: var(--app-surface-muted);
}

.panel wa-card::part(body) {
  flex: 1 1 auto;
  min-height: 0;
  padding: 0;
}

.panel .card-body {
  height: 100%;
  overflow: auto;
  padding: 14px 14px 16px;
  box-sizing: border-box;
}

.meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--wa-color-text-weak, #6b7280);
}

.results {
  display: grid;
  gap: 10px;
}

.result {
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-sm);
  padding: 10px 12px;
  cursor: pointer;
  background: var(--app-surface);
  background: color-mix(in oklab, var(--app-surface), var(--app-accent) var(--score-tint, 0%));
  color: rgba(0, 0, 0, 0.92);
  text-align: left;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background-color 120ms ease;
}

.result:hover {
  transform: translateY(-1px);
  border-color: var(--app-accent-border);
  box-shadow: var(--app-shadow-sm);
}

.result.is-selected {
  border-color: var(--app-accent);
  background: rgba(37, 99, 235, 0.06);
  box-shadow: var(--app-shadow-sm);
}

.result:focus-visible {
  outline: 2px solid var(--app-focus);
  outline-offset: 2px;
}

.result-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.result-id,
.result-name {
  font-weight: 750;
}

.result-id {
  letter-spacing: 0.01em;
}

.result-sep {
  color: rgba(0, 0, 0, 0.32);
}

.result-name {
  color: rgba(0, 0, 0, 0.88);
}

.result-text {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.35;
  font-size: 12px;
  color: rgba(0, 0, 0, 0.58);
}

.hint {
  color: var(--wa-color-text-weak, #6b7280);
  line-height: 1.55;
}

.ordinance-section wa-details {
  margin-top: 10px;
}

.ordinance-section wa-details::part(summary) {
  font-weight: 650;
}

.ordinance-preamble {
  padding: 10px 12px;
  border: 1px solid var(--app-border);
  border-radius: 12px;
  background: var(--app-surface-muted);
  color: rgba(0, 0, 0, 0.72);
  line-height: 1.6;
}

.kvs {
  display: grid;
  gap: 10px;
}

.kv {
  display: grid;
  gap: 6px;
}

.kv .k {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--wa-color-text-weak, #6b7280);
}

.kv .v {
  white-space: pre-wrap;
  line-height: 1.45;
}

.ordinance-tree {
  --indent-guide-width: 1px;
  --indent-guide-color: rgba(0, 0, 0, 0.14);
  --indent-guide-style: solid;
  --indent-guide-offset: 8px;
  --indent-size: 16px;
}

.ordinance-tree wa-tree-item::part(item) {
  border-radius: 10px;
  padding: 6px 8px;
}

.ordinance-tree wa-tree-item::part(item):hover {
  background: rgba(0, 0, 0, 0.03);
}

.ordinance-node .node-line {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  min-width: 0;
}

.ordinance-node .node-marker {
  flex: 0 0 auto;
  font-size: 12px;
  line-height: 1.6;
  font-weight: 750;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.78);
  background: rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 999px;
  padding: 0 10px;
}

.ordinance-node .node-text {
  flex: 1 1 auto;
  min-width: 0;
  white-space: pre-wrap;
  line-height: 1.5;
}

.ordinance-node .node-id {
  flex: 0 0 auto;
  font-size: 11px;
  line-height: 1.8;
  color: rgba(0, 0, 0, 0.45);
  margin-left: 8px;
}

.ordinance-node[data-depth="0"] .node-text {
  font-weight: 700;
  color: rgba(0, 0, 0, 0.92);
}

.ordinance-node[data-depth="1"] .node-text {
  font-weight: 650;
  color: rgba(0, 0, 0, 0.88);
}

.ordinance-node[data-depth="2"] .node-text {
  color: rgba(0, 0, 0, 0.82);
}

.ordinance-node[data-depth="3"] .node-text {
  color: rgba(0, 0, 0, 0.75);
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.loading-row {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--wa-color-text-weak, #6b7280);
  font-size: 13px;
}

.footer-note {
  color: var(--wa-color-text-weak, #6b7280);
  font-size: 12px;
  line-height: 1.55;
}

@media (max-width: 900px) {
  .shell {
    padding: 18px 14px 28px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar wa-input {
    min-width: 0;
    flex: 1 1 auto;
  }

  .layout {
    height: min(82vh, 980px);
    height: min(82dvh, 980px);
    border-radius: 14px;
  }

  .panel {
    padding: 10px;
  }
}