:root {
  color-scheme: light;
  --page: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f8f8f8;
  --ink: #292929;
  --muted: #505050;
  --line: #e9e9e9;
  --line-strong: #d4d4d4;
  --accent: #c66a45;
  --accent-soft: #fff3ed;
  --info: #a94f2d;
  --success: #05834e;
  --success-soft: #eaf7f1;
  --danger: #d73220;
  --danger-soft: #fff1ef;
  --shadow: 0 1px 4px rgb(0 0 0 / 6%), 0 1px 2px rgb(0 0 0 / 8%);
  --focus-ring: rgb(198 106 69 / 30%);
  --focus-shadow: rgb(198 106 69 / 15%);
  --control-hover: #8d93a2;
  --primary: #292929;
  --primary-hover: #3a3a3a;
  --on-primary: #ffffff;
  --empty-surface: rgb(255 255 255 / 55%);
  --code-surface: #292929;
  --code-ink: #ffffff;
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23292929' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  font-family:
    "SF Pro Text", "SF Pro SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei",
    system-ui, sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #151412;
    --surface: #1d1c1a;
    --surface-soft: #242321;
    --ink: #f3f0eb;
    --muted: #b8b3ac;
    --line: #33312e;
    --line-strong: #504c47;
    --accent: #d78661;
    --accent-soft: #35241d;
    --info: #e09773;
    --success: #73d9aa;
    --success-soft: #173328;
    --danger: #ff8b7b;
    --danger-soft: #3b211f;
    --shadow: 0 1px 5px rgb(0 0 0 / 28%), 0 1px 2px rgb(0 0 0 / 35%);
    --focus-ring: rgb(215 134 97 / 38%);
    --focus-shadow: rgb(215 134 97 / 22%);
    --control-hover: #77716a;
    --primary: #f3f0eb;
    --primary-hover: #ffffff;
    --on-primary: #1b1a18;
    --empty-surface: rgb(255 255 255 / 3%);
    --code-surface: #11100f;
    --code-ink: #f3f0eb;
    --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23f3f0eb' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  }
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--page);
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="checkbox"] {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
pre:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.page-shell {
  width: min(1280px, calc(100% - 64px));
  margin: 0 auto;
}

.hero {
  display: grid;
  justify-items: center;
  padding: 48px 0 56px;
  text-align: center;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(2.25rem, 4.8vw, 4.5rem);
  font-weight: 600;
  letter-spacing: normal;
  line-height: 1;
  white-space: nowrap;
}

.hero-description {
  max-width: 700px;
  margin-bottom: 0;
  margin-right: auto;
  margin-left: auto;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.project-meta code {
  color: var(--ink);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.project-meta a {
  color: var(--ink);
  text-underline-offset: 3px;
}

.panel,
.param-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.app-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 420px;
  color: var(--muted);
}

.app-loading[hidden] {
  display: none;
}

.app-loading > div {
  display: grid;
  gap: 4px;
}

.app-loading strong {
  color: var(--ink);
  font-size: 0.92rem;
}

.app-loading code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.app-loading span:not(.loading-spinner) {
  font-size: 0.78rem;
}

.loading-spinner {
  width: 22px;
  height: 22px;
  border: 2px solid var(--line-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: loading-spin 700ms linear infinite;
}

.app-loading[data-state="error"] {
  flex-direction: column;
  text-align: center;
}

.app-loading[data-state="error"] > div {
  justify-items: center;
}

@keyframes loading-spin {
  to {
    transform: rotate(360deg);
  }
}

.tester {
  margin-bottom: 30px;
  overflow: hidden;
}

.tester-body {
  padding: 20px 24px 24px;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.status,
.schema-status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 0.76rem;
  font-weight: 700;
}

.status[data-state="success"],
.schema-status[data-state="success"] {
  color: var(--success);
  background: var(--success-soft);
}

.status[data-state="error"],
.schema-status[data-state="error"] {
  color: var(--danger);
  background: var(--danger-soft);
}

.url-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
}

.url-field span,
.field-label,
.column-labels {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 48px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--ink);
  background: var(--surface);
  transition:
    border-color 140ms ease,
    box-shadow 140ms ease,
    background 140ms ease;
}

select {
  padding-right: 38px;
  appearance: none;
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px 8px;
}

select[data-field="negated"] {
  padding-right: 32px;
  background-position: right 10px center;
}

input:hover,
select:hover {
  border-color: var(--control-hover);
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--focus-shadow);
  outline: none;
}

input[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.test-details {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 26px;
  margin-top: 14px;
}

.test-chip {
  padding: 6px 9px;
  border-radius: 8px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 0.74rem;
}

.test-chip[data-state="success"] {
  color: var(--success);
  background: var(--success-soft);
}

.test-chip[data-state="error"] {
  color: var(--danger);
  background: var(--danger-soft);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(340px, 0.72fr);
  align-items: start;
  gap: 24px;
}

.builder-heading,
.preview .section-heading,
.tester .section-heading {
  height: 65px;
  margin-bottom: 0;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
}

.builder {
  overflow: hidden;
}

.button,
.icon-button {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--ink);
  background: var(--surface);
  font-size: 0.78rem;
  font-weight: 720;
  transition:
    transform 120ms ease,
    border-color 120ms ease,
    background 120ms ease;
}

.button:hover,
.icon-button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.button:active,
.icon-button:active {
  transform: translateY(1px);
}

.button-primary {
  border-color: var(--primary);
  color: var(--on-primary);
  background: var(--primary);
}

.button-primary:hover {
  border-color: var(--primary-hover);
  color: var(--on-primary);
  background: var(--primary-hover);
}

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

.button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.rules {
  display: grid;
  gap: 16px;
}

.builder .rules {
  padding: 16px;
}

.empty-state {
  padding: 42px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: 16px;
  color: var(--muted);
  text-align: center;
  background: var(--empty-surface);
}

.param-card {
  overflow: hidden;
}

.builder .param-card {
  box-shadow: none;
}

.param-meta {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  align-items: start;
  gap: 18px;
  padding: 20px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.field {
  display: grid;
  gap: 7px;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 48px;
  margin-top: 23px;
  padding: 0 4px;
  font-size: 0.84rem;
  font-weight: 680;
}

.param-meta > .button {
  min-height: 48px;
  margin-top: 23px;
}

.checkbox-field input {
  width: 18px;
  min-height: 18px;
  margin: 0;
  accent-color: var(--accent);
}

.param-error,
.row-error {
  min-height: 1em;
  color: var(--danger);
  font-size: 0.7rem;
}

.mobile-label {
  display: none;
}

.predicate-editor {
  --predicate-columns: 120px minmax(160px, 0.8fr) minmax(190px, 1.5fr) 174px;

  padding: 20px;
}

.column-labels,
.predicate-row {
  display: grid;
  grid-template-columns: var(--predicate-columns);
  gap: 10px;
}

.column-labels {
  padding: 0 0 8px 28px;
}

.all-of {
  position: relative;
  display: grid;
  gap: 10px;
  padding-left: 28px;
}

.all-of-rail {
  position: absolute;
  top: 24px;
  bottom: calc(24px + 4px + 0.84rem);
  left: 3px;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
}

.all-of-rail > span {
  padding: 7px 2px;
  color: var(--info);
  background: var(--surface);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  line-height: 1;
  writing-mode: vertical-rl;
}

.all-of:not(.is-single) .predicate-row::before {
  position: absolute;
  left: -25px;
  width: 14px;
  content: "";
  pointer-events: none;
}

.all-of:not(.is-single) .predicate-row:first-of-type::before {
  top: 24px;
  bottom: -5px;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
  border-radius: 10px 0 0;
}

.all-of:not(.is-single) .predicate-row:not(:first-of-type, :last-of-type)::before {
  top: -5px;
  bottom: -5px;
  border-left: 1px solid var(--line-strong);
}

.all-of:not(.is-single) .predicate-row:last-of-type::before {
  top: -5px;
  height: 29px;
  border-bottom: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
  border-radius: 0 0 0 10px;
}

.all-of.is-single .all-of-rail {
  top: 24px;
  right: auto;
  bottom: auto;
  left: 3px;
  display: block;
  width: 8px;
  height: 8px;
  padding: 0;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
}

.all-of.is-single .all-of-rail > span {
  display: none;
}

.predicate-row {
  position: relative;
  align-items: start;
}

.row-error {
  min-height: 0.84rem;
  line-height: 1.2;
}

.value-wrap {
  display: grid;
  gap: 4px;
}

.value-control {
  position: relative;
  display: block;
}

.value-control input {
  display: block;
}

.value-control.has-suffix input {
  padding-right: 82px;
}

.value-suffix {
  position: absolute;
  top: 50%;
  right: 12px;
  color: var(--muted);
  font-size: 0.7rem;
  pointer-events: none;
  transform: translateY(-50%);
}

.row-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.row-actions .button {
  min-height: 48px;
}

.logic-button {
  min-width: 46px;
}

.or-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 14px 0;
  color: var(--info);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.or-divider::before,
.or-divider::after {
  height: 1px;
  flex: 1;
  content: "";
  background: var(--line);
}

.preview {
  position: sticky;
  top: 20px;
  overflow: hidden;
}

pre {
  min-height: 520px;
  max-height: calc(100vh - 180px);
  margin: 0;
  padding: 20px;
  overflow: auto;
  color: var(--code-ink);
  background: var(--code-surface);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  tab-size: 2;
}

@media (max-width: 1050px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .preview {
    position: static;
  }

  pre {
    min-height: 340px;
    max-height: 560px;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 24px, 1280px);
  }

  .hero {
    display: grid;
  }

  h1 {
    white-space: normal;
  }

  .url-field,
  .param-meta,
  .column-labels,
  .predicate-row {
    grid-template-columns: 1fr;
  }

  .url-field {
    gap: 7px;
  }

  .column-labels {
    display: none;
  }

  .mobile-label {
    display: block;
    margin-bottom: 7px;
  }

  .param-meta {
    align-items: start;
  }

  .checkbox-field,
  .param-meta > .button {
    margin-top: 0;
  }

  .predicate-row {
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
  }

  .row-actions {
    justify-content: start;
    flex-wrap: wrap;
  }

  .section-heading {
    align-items: start;
  }

  .builder-heading,
  .preview .section-heading,
  .tester .section-heading {
    height: auto;
    min-height: 65px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .loading-spinner {
    animation-duration: 1.4s;
  }
}