:root {
  color-scheme: light;
  --bg: #f3f6fb;
  --panel: #ffffff;
  --panel-alt: #f8fbff;
  --border: #d6deea;
  --border-strong: #b8c5d9;
  --text: #192434;
  --muted: #5d6d80;
  --accent: #1f5eff;
  --accent-soft: #e8f0ff;
  --success: #0d8a49;
  --warning: #a25f00;
  --danger: #b42318;
  --danger-soft: #fff1f1;
  --shadow: 0 20px 48px rgba(17, 34, 68, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: linear-gradient(180deg, #eef3fb 0%, var(--bg) 100%);
  color: var(--text);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

code,
pre,
.code-input {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.app-shell {
  max-width: 1680px;
  margin: 0 auto;
  padding: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 20px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stage-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1 {
  margin-bottom: 8px;
  font-size: 34px;
  line-height: 1.15;
}

.lead {
  margin: 0;
  max-width: 860px;
  color: var(--muted);
  line-height: 1.6;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.toolbar-button,
.inline-button {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 11px 16px;
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease, background 0.14s ease;
}

.toolbar-button:hover,
.inline-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(17, 34, 68, 0.08);
}

.toolbar-button:focus-visible,
.inline-button:focus-visible,
.nav-link:focus-visible,
input:focus-visible,
textarea:focus-visible,
details summary:focus-visible {
  outline: 3px solid rgba(31, 94, 255, 0.22);
  outline-offset: 2px;
}

.toolbar-button[disabled],
.inline-button[disabled] {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
  box-shadow: none;
}

.toolbar-button--primary {
  background: var(--accent);
  color: #fff;
}

.toolbar-button--secondary,
.inline-button {
  border-color: var(--border);
}

.toolbar-button--ghost,
.inline-button--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(182, 197, 218, 0.72);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.status-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.panel-label {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-text {
  font-size: 16px;
}

.status-pills,
.section-metrics,
.section-summary-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.status-pill,
.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef3f9;
  color: #34506f;
  font-size: 13px;
  font-weight: 600;
}

.status-pill--subtle {
  background: #f3f6fb;
}

.status-pill--neutral {
  background: #eef3f9;
  color: #34506f;
}

.status-pill--info {
  background: #e7f0ff;
  color: #204f9a;
}

.status-pill--success {
  background: #e6f8ee;
  color: #19633b;
}

.status-pill--warning {
  background: #fff3d9;
  color: #8a5b00;
}

.status-pill--danger {
  background: #fde8e8;
  color: #a12828;
}

.workspace {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 360px;
  gap: 20px;
  align-items: start;
}

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

.sticky-panel {
  position: sticky;
  top: 24px;
}

.sidebar-panel,
.inspector-panel {
  padding: 20px;
}

.sidebar-nav {
  display: grid;
  gap: 10px;
}

.nav-link {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel-alt);
  color: var(--text);
  padding: 14px 16px;
  font-weight: 600;
  transition: background 0.14s ease, border-color 0.14s ease, transform 0.14s ease;
}

.nav-link:hover {
  transform: translateX(2px);
  border-color: var(--border-strong);
}

.nav-link.is-active {
  background: var(--accent-soft);
  border-color: rgba(31, 94, 255, 0.35);
  color: var(--accent);
}

.sidebar-note {
  margin-top: 18px;
  padding: 14px;
  border-radius: 14px;
  background: #f6f9fd;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.sidebar-note p:last-child {
  margin-bottom: 0;
}

.editor-panel {
  display: none;
  padding: 24px;
}

.editor-panel.is-active {
  display: block;
}

.center-column {
  display: grid;
  gap: 20px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.section-head h2,
.inspector-heading h2 {
  margin-bottom: 8px;
  font-size: 24px;
}

.section-help {
  max-width: 820px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.summary-chip,
.summary-card {
  min-width: 160px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #f8fbff;
  border: 1px solid var(--border);
}

.summary-chip__label,
.summary-card__label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.summary-card strong,
.summary-chip strong {
  word-break: break-word;
}

.field-grid {
  display: grid;
  gap: 16px;
}

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

.field-grid--decision {
  grid-template-columns: minmax(0, 1fr);
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field span,
.toggle-field span {
  font-weight: 600;
}

.form-field--wide {
  grid-column: 1 / -1;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  padding: 13px 14px;
  transition: border-color 0.14s ease, box-shadow 0.14s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  border-color: rgba(31, 94, 255, 0.52);
  box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.08);
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.5;
}

.code-input,
.preview-code {
  font-size: 13px;
}

.code-input.is-invalid,
input.is-invalid,
select.is-invalid,
textarea.is-invalid {
  border-color: rgba(180, 35, 24, 0.55);
  background: var(--danger-soft);
}

.field-hint {
  color: var(--muted);
  line-height: 1.5;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.callout {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: #f7f9fd;
  border: 1px solid var(--border);
  color: var(--muted);
  line-height: 1.6;
}

.callout strong {
  color: var(--text);
}

.callout--muted {
  margin-top: 18px;
}

.toggle-field {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #f8fbff;
  width: fit-content;
}

.toggle-field input {
  width: 18px;
  height: 18px;
}

.summary-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.inspector-panel {
  display: grid;
  gap: 20px;
}

.inspector-block {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--panel-alt);
}

.inspector-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.error-list,
.activity-log {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.error-list li {
  padding: 12px 10px;
  border-radius: 12px;
  background: var(--danger-soft);
  border: 1px solid rgba(180, 35, 24, 0.18);
}

.error-path {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--danger);
  letter-spacing: 0.03em;
}

.error-message {
  display: block;
  line-height: 1.55;
}

.empty-state {
  color: var(--muted);
  line-height: 1.6;
}

.advanced-block summary {
  cursor: pointer;
  font-weight: 700;
}

.preview-code {
  margin: 12px 0 0;
  max-height: 420px;
  overflow: auto;
  padding: 14px;
  border-radius: 14px;
  background: #0f1725;
  color: #dce6f6;
  white-space: pre-wrap;
  word-break: break-word;
}

.activity-log {
  list-style: none;
  padding-left: 0;
}

.activity-log li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(182, 197, 218, 0.6);
}

.activity-log li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.activity-log__time {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.activity-log__text {
  display: block;
  line-height: 1.55;
}

.status-text--success,
.status-ok {
  color: var(--success);
}

.status-text--warning,
.status-warning {
  color: var(--warning);
}

.status-text--danger,
.status-danger {
  color: var(--danger);
}

@media (max-width: 1320px) {
  .workspace {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .right-column {
    grid-column: 1 / -1;
  }

  .sticky-panel {
    position: static;
  }
}

@media (max-width: 960px) {
  .app-shell {
    padding: 18px;
  }

  .app-header,
  .status-strip,
  .section-head,
  .inspector-heading {
    flex-direction: column;
    align-items: stretch;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .field-grid--general,
  .summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 28px;
  }

  .toolbar {
    justify-content: stretch;
  }

  .toolbar-button,
  .inline-button {
    width: 100%;
  }

  .status-pills,
  .section-metrics,
  .section-summary-grid {
    flex-direction: column;
  }
}


.source-editor-shell,
.method-builder-shell {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
}

.method-builder-shell {
  margin-top: 8px;
}

.builder-sidebar,
.builder-main,
.test-panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
}

.builder-sidebar {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.builder-sidebar--methods {
  background: #fbfcff;
}

.builder-sidebar__head,
.section-head--compact {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.builder-sidebar__head h3,
.section-head--compact h3 {
  margin: 4px 0 0;
  font-size: 18px;
}

.builder-main {
  min-width: 0;
}

.builder-main__content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field-grid--source-builder,
.field-grid--method-builder,
.field-grid--test-builder {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-grid--method-builder {
  padding-top: 0;
}

.selection-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.selection-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #f8fbff;
  color: var(--text);
  text-align: left;
  transition: border-color 0.14s ease, box-shadow 0.14s ease, background 0.14s ease;
}

.selection-card span {
  color: var(--muted);
  line-height: 1.5;
}

.selection-card:hover {
  border-color: rgba(31, 94, 255, 0.32);
  background: #fff;
}

.selection-card.is-active {
  border-color: rgba(31, 94, 255, 0.48);
  box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.08);
  background: #fff;
}

.selection-card--method {
  background: #f9fbff;
}

.code-input--compact {
  min-height: 96px;
}

.builder-inline-actions {
  margin-top: 0;
}

.test-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #fbfcff;
}

.criteria-editor-shell {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
}

.builder-sidebar--criteria {
  background: #fbfcff;
}

.builder-main--criteria {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field-grid--criterion-meta {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.field-grid--required-methods,
.field-grid--criterion-field,
.field-grid--no-data-rule {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.field-grid--criterion-field {
  align-items: start;
}

.form-field--action {
  align-self: end;
}

.form-field--action .inline-button {
  width: 100%;
}

.form-field--rule-group {
  min-width: 132px;
}

.toggle-field--criterion-enabled {
  align-self: end;
  min-height: 52px;
}

.empty-state--compact {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px dashed var(--border);
  background: #f8fbff;
}

.criterion-subpanel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fbfcff;
}

.criterion-field-list,
.rule-builder {
  display: grid;
  gap: 14px;
}

.criterion-field-card,
.rule-group,
.rule-condition {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.criterion-field-card__head,
.rule-group__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.criterion-field-card__head > div:first-child {
  display: grid;
  gap: 4px;
}

.criterion-field-card__head span,
.criterion-field-card__meta,
.mock-field__label small,
.rule-condition__value--empty {
  color: var(--muted);
  line-height: 1.5;
}

.criterion-field-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}

.criterion-field-card__meta code {
  overflow-wrap: anywhere;
}

.inline-actions--compact {
  margin-top: 0;
  gap: 8px;
}

.token-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.token-list__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.token-list__remove {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  padding: 0;
  cursor: pointer;
}

.token-list__remove:hover {
  color: var(--text);
}

.rule-group__children {
  display: grid;
  gap: 12px;
  padding-left: 18px;
  border-left: 2px solid rgba(31, 94, 255, 0.12);
}

.rule-condition__grid {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 220px) minmax(0, 1fr);
}

.rule-condition__value-wrapper,
.rule-condition__value,
.rule-condition__value-wrapper .form-field {
  height: 100%;
}

.rule-condition__value--empty {
  display: flex;
  align-items: flex-end;
  min-height: 52px;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px dashed var(--border);
  background: #f8fbff;
}

.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.checkbox-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
}

.checkbox-chip input {
  width: 16px;
  height: 16px;
}

.mock-fields-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mock-field {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
}

.mock-field__label {
  display: grid;
  gap: 4px;
}

.summary-grid--criterion-test {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.response-tree-panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.response-tree {
  display: grid;
  gap: 10px;
}

.response-tree-node {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfcff;
}

.response-tree-node[open] {
  background: #fff;
}

.response-tree-node--leaf {
  padding: 12px 14px;
}

.response-tree-node__summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
}

.response-tree-node__summary::-webkit-details-marker {
  display: none;
}

.response-tree-node__header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.response-tree-node__info {
  min-width: 0;
  display: grid;
  gap: 8px;
}

.response-tree-node__title {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.response-tree-node__title strong {
  font-size: 15px;
}

.response-tree-node__badges,
.response-tree-node__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.response-tree-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eef3f9;
  color: #34506f;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.response-tree-node__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.response-tree-node__meta-item code {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.response-tree-node__actions {
  flex-shrink: 0;
}

.response-tree-node__children {
  display: grid;
  gap: 10px;
  padding: 0 14px 14px 24px;
}

.field-mapping-dialog {
  width: min(760px, calc(100vw - 32px));
  border: 0;
  border-radius: 20px;
  padding: 0;
  box-shadow: var(--shadow);
}

.field-mapping-dialog::backdrop {
  background: rgba(15, 23, 37, 0.46);
}

.field-mapping-dialog__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
}

.dialog-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.dialog-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-mapping-meta {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #f8fbff;
  color: var(--muted);
  line-height: 1.55;
}

.field-mapping-meta code,
.field-mapping-meta span {
  overflow-wrap: anywhere;
}

.field-mapping-actions {
  margin-top: 0;
}

.test-panel__actions {
  margin-top: 0;
}

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

.preview-code--tall {
  min-height: 260px;
}

.advanced-block--section {
  margin-top: 4px;
}

.builder-main__content > .advanced-block--section {
  border-top: 1px solid var(--border);
  padding-top: 8px;
}

@media (max-width: 1180px) {
  .source-editor-shell,
  .method-builder-shell,
  .criteria-editor-shell {
    grid-template-columns: 1fr;
  }

  .field-grid--criterion-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-grid--required-methods,
  .field-grid--criterion-field,
  .rule-condition__grid,
  .mock-fields-grid,
  .summary-grid--criterion-test {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .field-grid--source-builder,
  .field-grid--method-builder,
  .field-grid--test-builder,
  .summary-grid--test,
  .field-grid--criterion-meta,
  .field-grid--required-methods,
  .field-grid--criterion-field,
  .summary-grid--criterion-test,
  .mock-fields-grid,
  .rule-condition__grid {
    grid-template-columns: 1fr;
  }

  .builder-sidebar__head,
  .section-head--compact,
  .dialog-head,
  .response-tree-node__header,
  .criterion-field-card__head,
  .rule-group__head {
    flex-direction: column;
  }

  .dialog-grid {
    grid-template-columns: 1fr;
  }

  .response-tree-node__children,
  .rule-group__children {
    padding-left: 14px;
  }
}