:root {
  --bg: #f4f7f9;
  --panel: #ffffff;
  --ink: #1d2d35;
  --muted: #59707b;
  --accent: #0f6c8b;
  --accent-strong: #0a4f66;
  --error-bg: #ffe9e8;
  --error-ink: #8d1f1b;
  --success-bg: #e7f8ea;
  --success-ink: #175b2d;
  --border: #d5e1e7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #ffffff, var(--bg));
  color: var(--ink);
}

.page {
  width: min(980px, 100%);
  max-width: 980px;
  margin: 2rem auto;
  padding: 0 1rem;
  display: grid;
  gap: 1rem;
}

.page > *,
#query-builder-panel {
  min-width: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  min-width: 0;
  max-width: 100%;
}

.breadcrumb-panel {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

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

.breadcrumb-sep {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-muted);
  font-weight: 600;
}

.lead {
  color: var(--muted);
  margin-top: 0;
}

.kind-label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

select,
input,
textarea,
button {
  font: inherit;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.6rem;
  background: #fff;
}

textarea {
  resize: vertical;
}

.builder-form h2 {
  margin-top: 0;
}

.field-group {
  margin-bottom: 1rem;
}

.field-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.query-builder-section-label {
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.query-builder-advanced-options {
  margin: 0.25rem 0 1rem;
  color: var(--muted);
}

.query-builder-advanced-options summary {
  font-size: 0.92rem;
  font-weight: 600;
}

.query-builder-advanced-options[open] {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  background: #fbfdfe;
}

.query-builder-lineage-field {
  max-width: 18rem;
}

.query-builder-advanced-panel {
  display: grid;
  gap: 0.9rem;
  margin-top: 0.75rem;
}

.query-builder-sort-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 12rem 9rem 5.5rem;
  align-items: start;
}

.query-builder-relation-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr) minmax(0, 1fr);
  align-items: start;
}

.query-builder-relation-row label {
  white-space: nowrap;
}

.query-builder-relation-row .field-group {
  min-width: 0;
}

.query-builder-relation-row select {
  min-width: 0;
  width: 100%;
}

.field-group .query-builder-lineage-check {
  display: inline-flex;
  margin-top: 0.55rem;
}

.query-builder-advanced-panel .field-group {
  margin-bottom: 0;
}

.query-builder-advanced-panel input,
.query-builder-advanced-panel select {
  min-width: 0;
}

.query-builder-sort-field input,
.query-builder-sort-dir-field select,
.query-builder-limit-field input {
  width: 100%;
}

.help {
  color: var(--muted);
  margin-top: 0.3rem;
  font-size: 0.92rem;
}

.field-error {
  margin-top: 0.35rem;
  color: var(--error-ink);
  font-size: 0.92rem;
}

.error-banner,
.success-banner {
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 1rem;
}

.error-banner {
  background: var(--error-bg);
  color: var(--error-ink);
}

.success-banner {
  background: var(--success-bg);
  color: var(--success-ink);
}

.success-banner pre {
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.5rem;
  border-radius: 6px;
  margin-bottom: 0;
}

.actions {
  margin-top: 1.2rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.nav-link {
  display: inline-block;
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.nav-link:hover {
  background: var(--accent-strong);
}

button:hover {
  background: var(--accent-strong);
}

button.secondary {
  width: auto;
  background: #eef4f7;
  color: #20323a;
}

.list-field {
  display: grid;
  gap: 0.55rem;
}

.list-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.query-list-row {
  grid-template-columns: 1fr auto 1fr auto;
}

.panel pre {
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.6rem;
  border-radius: 6px;
}

.constraints-section {
  border-top: 1px solid var(--border);
  margin-top: 1rem;
  padding-top: 1rem;
}

.constraints-section h3 {
  margin-top: 0;
}

.constraint-row {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem;
  background: #fbfdfe;
  display: grid;
  gap: 0.5rem;
}

.constraint-grid {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: 2fr 1fr auto auto;
  align-items: center;
}

.constraint-grid.wide {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.constraint-grid.wide textarea {
  grid-column: 1 / -1;
}

.explorer-table-wrap {
  overflow-x: auto;
}

.explorer-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.8rem;
  font-size: 0.94rem;
}

.explorer-table th,
.explorer-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem;
  text-align: left;
  vertical-align: top;
}

.mono {
  font-family: "Fira Code", "Cascadia Code", monospace;
  font-size: 0.88rem;
}

.link-button {
  background: transparent;
  color: var(--accent);
  border: 0;
  padding: 0;
  text-decoration: underline;
}

.link-button:hover {
  color: var(--accent-strong);
  background: transparent;
}

button[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.detail-grid {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: 0.35rem 0.75rem;
  margin: 0.5rem 0 0.9rem;
}

.detail-grid dt {
  font-weight: 700;
  color: var(--text-dim);
}

.detail-grid dd {
  margin: 0;
}

details > summary {
  cursor: pointer;
  margin-bottom: 0.45rem;
}

@media (max-width: 860px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

.check {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.92rem;
}

.check input {
  width: auto;
}

@media (max-width: 640px) {
  .list-row {
    grid-template-columns: 1fr;
  }

  .query-builder-sort-row {
    grid-template-columns: 1fr;
  }

  .query-builder-relation-row {
    grid-template-columns: 1fr;
  }

  .constraint-grid,
  .constraint-grid.wide {
    grid-template-columns: 1fr;
  }
}