/* Tool-scoped styles keep shared site changes from altering the editor layout. */
/* Page foundation and design tokens */
body.yaml-format-page {
  color-scheme: light;
  --yaml-page: #f3f6f9;
  --yaml-panel: #ffffff;
  --yaml-control: #f7f9fb;
  --yaml-text: #172033;
  --yaml-muted: #5d6b7d;
  --yaml-border: #cbd5e1;
  --yaml-border-strong: #aebaca;
  --yaml-primary: #086bd8;
  --yaml-primary-hover: #075bb6;
  --yaml-focus: #1473e6;
  --yaml-success: #087a45;
  --yaml-warning: #9a5a00;
  --yaml-error: #b42318;
  --yaml-info-bg: #e8f4ff;
  --yaml-message-bg: #f5f7fa;
  --yaml-on-primary: #ffffff;
  --yaml-disabled-text: #8994a3;
  --yaml-disabled-background: #e9edf2;
  --yaml-toolbar-background: #fbfcfd;
  --yaml-info-text: #07579e;
  --yaml-info-border: #9dd5ff;
  --yaml-error-border: #fecaca;
  --yaml-error-background: #fff5f5;
  --yaml-error-detail: #7f1d1d;
  --yaml-content-width: 1500px;
  --yaml-page-gutter: 32px;
  --yaml-control-height: 36px;
  --yaml-toolbar-height: 56px;
  --yaml-editor-heading-height: 50px;
  --yaml-editor-gutter-width: 58px;
  --yaml-border-width: 1px;
  --yaml-panel-gap: 14px;
  --yaml-panel-padding: 14px;
  --yaml-control-gap: 8px;
  --yaml-editor-padding: 14px;
  --yaml-radius-large: 10px;
  --yaml-radius-small: 6px;
  --yaml-font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --yaml-font-code: "Cascadia Code", Consolas, monospace;
  box-sizing: border-box;
  margin: 0;
  color: var(--yaml-text);
  background: var(--yaml-page);
  font-family: var(--yaml-font-ui);
  font-size: 14px;
  line-height: 1.6;
}

.yaml-format-page * {
  box-sizing: border-box;
}

/* Page frame and heading */
.yaml-format-main {
  width: min(var(--yaml-content-width), calc(100% - var(--yaml-page-gutter)));
  margin: 0 auto;
  padding-block: 26px 48px;
}

.yaml-format-page-header {
  margin-block-end: 16px;
}

.yaml-format-page-title {
  margin: 8px 0 2px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.25;
}

.yaml-format-page-description,
.yaml-format-panel-description {
  margin: 4px 0 0;
  color: var(--yaml-muted);
}

.yaml-format-page .breadcrumb {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
}

.yaml-format-breadcrumb-link {
  color: var(--yaml-primary);
}

.yaml-format-page .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Shared panel surfaces */
.yaml-format-notice,
.yaml-format-panel {
  border: var(--yaml-border-width) solid var(--yaml-border);
  border-radius: var(--yaml-radius-large);
  background: var(--yaml-panel);
}

.yaml-format-notice {
  margin-block-end: var(--yaml-panel-gap);
  padding: 12px var(--yaml-panel-padding);
  color: var(--yaml-info-text);
  background: var(--yaml-info-bg);
}

.yaml-format-panel {
  margin-block-end: var(--yaml-panel-gap);
  overflow: hidden;
}

.yaml-format-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: var(--yaml-panel-padding);
  border-block-end: var(--yaml-border-width) solid var(--yaml-border);
}

.yaml-format-panel-title,
.yaml-format-editor-title,
.yaml-format-error-title,
.yaml-format-about-title,
.yaml-format-about-subtitle {
  margin: 0;
}

.yaml-format-panel-title {
  font-size: 18px;
}

/* Action-group and toolbar layout */
.yaml-format-actions,
.yaml-format-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--yaml-control-gap);
}

.yaml-format-actions--push {
  margin-inline-start: auto;
}

/* Form-control foundations */
.yaml-format-control {
  min-height: var(--yaml-control-height);
  border: var(--yaml-border-width) solid var(--yaml-border-strong);
  border-radius: var(--yaml-radius-small);
  color: var(--yaml-text);
  background: var(--yaml-control);
  font: inherit;
}

.yaml-format-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  font-weight: 600;
  cursor: pointer;
}

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

/* Control interaction states */
.yaml-format-button:hover:not(:disabled) {
  border-color: var(--yaml-primary);
}

.yaml-format-button--primary:hover:not(:disabled) {
  background: var(--yaml-primary-hover);
}

.yaml-format-control:disabled {
  color: var(--yaml-disabled-text);
  background: var(--yaml-disabled-background);
  cursor: not-allowed;
}

.yaml-format-control:focus-visible,
.yaml-format-textarea:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--yaml-focus) 35%, transparent);
  outline-offset: 1px;
}

.yaml-format-toolbar {
  min-height: var(--yaml-toolbar-height);
  padding: 10px var(--yaml-panel-padding);
  border-block-end: var(--yaml-border-width) solid var(--yaml-border);
}

.yaml-format-toolbar--display {
  background: var(--yaml-toolbar-background);
}

.yaml-format-setting,
.yaml-format-range-setting,
.yaml-format-check,
.yaml-format-file-name {
  display: inline-flex;
  align-items: center;
  gap: var(--yaml-control-gap);
  color: var(--yaml-muted);
  white-space: nowrap;
}

.yaml-format-select,
.yaml-format-input {
  min-width: 130px;
  padding: 6px 10px;
}

.yaml-format-range-input {
  width: 105px;
}

.yaml-format-range-output {
  min-width: 48px;
  color: var(--yaml-text);
  font-variant-numeric: tabular-nums;
}

.yaml-format-check-input {
  width: 16px;
  height: 16px;
  accent-color: var(--yaml-primary);
}

/* Editor sizing and user-selected fonts */
.yaml-format-workspace,
.yaml-format-editor-pane,
.yaml-format-code-stage {
  min-width: 0;
}

.yaml-format-workspace {
  /* Values updated by the display controls. */
  --yaml-font-size: 14px;
  --yaml-editor-height: 620px;
  --yaml-input-ratio: 50%;
  --yaml-output-ratio: 50%;
  display: grid;
  grid-template-columns: var(--yaml-input-ratio) var(--yaml-output-ratio);
  color: var(--editor-text);
  background: var(--editor-background);
  font-family: var(--yaml-font-code);
  font-size: var(--yaml-font-size);
  line-height: 1.65;
}

.yaml-format-workspace[data-font="consolas"] {
  font-family: Consolas, "Courier New", monospace;
}

.yaml-format-workspace[data-font="monospace"] {
  font-family: monospace;
}

/* Editor theme and syntax color tokens */
.yaml-format-editor-panel[data-theme="light"] {
  /* Editor surfaces */
  --editor-background: #ffffff;
  --editor-heading: #f7f9fb;
  --editor-gutter: #eef2f6;
  --editor-text: #1f2328;
  --editor-muted: #657080;
  --editor-border: #cbd5e1;
  --editor-selection: rgba(38, 139, 210, 0.24);

  /* YAML syntax */
  --token-key: #0451a5;
  --token-string: #a31515;
  --token-number: #098658;
  --token-boolean: #0000ff;
  --token-null: #0000ff;
  --token-punctuation: #1f2328;
  --token-comment: #008000;
  --token-directive: #af00db;
  --token-anchor: #795e26;
  --token-alias: #267f99;
  --token-tag: #800000;
  --token-plain: #1f2328;
}

.yaml-format-editor-panel[data-theme="dark"] {
  color-scheme: dark;

  /* Editor surfaces */
  --editor-background: #1e1e1e;
  --editor-heading: #181c22;
  --editor-gutter: #181818;
  --editor-text: #d4d4d4;
  --editor-muted: #9aa6b4;
  --editor-border: #3b414b;
  --editor-selection: rgba(38, 139, 210, 0.38);

  /* YAML syntax */
  --token-key: #9cdcfe;
  --token-string: #ce9178;
  --token-number: #b5cea8;
  --token-boolean: #569cd6;
  --token-null: #569cd6;
  --token-punctuation: #d4d4d4;
  --token-comment: #6a9955;
  --token-directive: #c586c0;
  --token-anchor: #dcdcaa;
  --token-alias: #4ec9b0;
  --token-tag: #c586c0;
  --token-plain: #d4d4d4;
}

.yaml-format-editor-pane {
  color: var(--editor-text);
  background: var(--editor-background);
}

.yaml-format-editor-pane--output {
  border-inline-start: var(--yaml-border-width) solid var(--editor-border);
}

/* Editor structure and text layers */
.yaml-format-editor-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: var(--yaml-editor-heading-height);
  padding: 9px var(--yaml-editor-padding);
  border-block-end: var(--yaml-border-width) solid var(--editor-border);
  background: var(--editor-heading);
}

.yaml-format-editor-heading-main {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.yaml-format-editor-title {
  font-family: var(--yaml-font-ui);
  font-size: 15px;
  white-space: nowrap;
}

.yaml-format-editor-meta {
  overflow: hidden;
  color: var(--editor-muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.yaml-format-editor-body {
  display: grid;
  grid-template-columns: var(--yaml-editor-gutter-width) minmax(0, 1fr);
  height: var(--yaml-editor-height);
  min-height: 0;
  overflow: hidden;
}

.yaml-format-line-numbers,
.yaml-format-highlight,
.yaml-format-textarea {
  margin: 0;
  border: 0;
  font: inherit;
  line-height: inherit;
  tab-size: 4;
  white-space: pre;
}

.yaml-format-line-numbers {
  min-height: 100%;
  padding: var(--yaml-editor-padding) 10px;
  overflow: hidden;
  color: var(--editor-muted);
  background: var(--editor-gutter);
  text-align: end;
  user-select: none;
}

.yaml-format-code-stage {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background: var(--editor-background);
}

.yaml-format-highlight,
.yaml-format-textarea {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: var(--yaml-editor-padding);
}

.yaml-format-highlight {
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  overflow: visible;
  color: var(--editor-text);
  pointer-events: none;
}

.yaml-format-textarea {
  z-index: 1;
  resize: none;
  overflow: auto;
  color: transparent;
  background: transparent;
  caret-color: var(--editor-text);
  -webkit-text-fill-color: transparent;
}

/* Editor interaction and large-input fallback states */
.yaml-format-editor-pane--input.is-dragging {
  box-shadow: inset 0 0 0 3px var(--yaml-primary);
}

.yaml-format-textarea::selection {
  color: transparent;
  background: var(--editor-selection);
}

.yaml-format-textarea::placeholder {
  color: var(--editor-muted);
  -webkit-text-fill-color: var(--editor-muted);
}

.yaml-format-code-stage.is-plain .yaml-format-highlight {
  display: none;
}

.yaml-format-code-stage.is-plain .yaml-format-textarea {
  color: var(--editor-text);
  -webkit-text-fill-color: var(--editor-text);
}

/* YAML syntax tokens */
.yaml-token--key {
  color: var(--token-key);
}

.yaml-token--string {
  color: var(--token-string);
}

.yaml-token--number {
  color: var(--token-number);
}

.yaml-token--boolean {
  color: var(--token-boolean);
}

.yaml-token--null {
  color: var(--token-null);
}

.yaml-token--punctuation {
  color: var(--token-punctuation);
}

.yaml-token--comment {
  color: var(--token-comment);
}

.yaml-token--directive {
  color: var(--token-directive);
}

.yaml-token--anchor {
  color: var(--token-anchor);
}

.yaml-token--alias {
  color: var(--token-alias);
}

.yaml-token--tag {
  color: var(--token-tag);
}

.yaml-token--plain {
  color: var(--token-plain);
}

/* Messages, errors, and results */
.yaml-message {
  min-height: 42px;
  margin: 0;
  padding: 10px var(--yaml-panel-padding);
  border-block-start: var(--yaml-border-width) solid var(--yaml-border);
  color: var(--yaml-muted);
  background: var(--yaml-message-bg);
}

.yaml-message--success {
  color: var(--yaml-success);
}

.yaml-message--warning {
  color: var(--yaml-warning);
}

.yaml-message--error {
  color: var(--yaml-error);
}

.yaml-error {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: var(--yaml-panel-padding);
  border-block-start: var(--yaml-border-width) solid var(--yaml-error-border);
  color: var(--yaml-error);
  background: var(--yaml-error-background);
}

/* Visibility states override component display declarations. */
.yaml-error[hidden],
.yaml-format-diagnostics[hidden],
.yaml-format-result-panel[hidden] {
  display: none;
}

.yaml-format-error-summary {
  margin: 4px 0;
}

.yaml-format-error-excerpt {
  max-width: min(900px, 75vw);
  margin: 6px 0 0;
  overflow: auto;
  color: var(--yaml-error-detail);
}

.yaml-format-diagnostics {
  padding: 12px var(--yaml-panel-padding);
  border-block-start: var(--yaml-border-width) solid var(--yaml-border);
  background: var(--yaml-message-bg);
}

.yaml-format-diagnostics-title {
  margin: 0 0 6px;
  font-size: 14px;
}

.yaml-format-diagnostics-list {
  margin: 0;
  padding-inline-start: 22px;
}

.yaml-format-diagnostics li[data-severity="error"] {
  color: var(--yaml-error);
}

.yaml-format-diagnostics li[data-severity="warning"] {
  color: var(--yaml-warning);
}

.yaml-format-file-name {
  flex-wrap: wrap;
}

.yaml-format-file-name-input {
  width: 260px;
}

.yaml-format-stats {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 0;
}

.yaml-format-stat {
  min-width: 0;
  padding: var(--yaml-panel-padding);
  border-inline-end: var(--yaml-border-width) solid var(--yaml-border);
}

.yaml-format-stat--last {
  border-inline-end: 0;
}

.yaml-format-stat-label {
  color: var(--yaml-muted);
  font-size: 12px;
}

.yaml-format-stat-value {
  margin: 2px 0 0;
  font-size: 18px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

/* Tool description */
.yaml-format-about {
  padding: 22px;
}

.yaml-format-about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.yaml-format-about-item + .yaml-format-about-item {
  margin-block-start: 4px;
}

.yaml-format-privacy {
  padding: 12px;
  border: var(--yaml-border-width) solid var(--yaml-info-border);
  border-radius: var(--yaml-radius-small);
  color: var(--yaml-info-text);
  background: var(--yaml-info-bg);
}

/* Responsive layout */
@media (max-width: 900px) {
  /* Narrow desktop and tablet */
  /* Page frame */
  body.yaml-format-page {
    --yaml-page-gutter: 20px;
  }

  /* Stacked panel controls */
  .yaml-format-panel-heading,
  .yaml-error {
    align-items: stretch;
    flex-direction: column;
  }

  .yaml-format-actions--push {
    margin-inline-start: 0;
  }

  /* Single-column editor */
  .yaml-format-workspace {
    grid-template-columns: 1fr;
  }

  .yaml-format-editor-pane--output {
    border-block-start: var(--yaml-border-width) solid var(--editor-border);
    border-inline-start: 0;
  }

  /* Three-column statistics */
  .yaml-format-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .yaml-format-stat--tablet-row-end {
    border-inline-end: 0;
  }
}

@media (max-width: 580px) {
  /* Smartphone */
  /* Vertically stacked controls */
  .yaml-format-toolbar,
  .yaml-format-actions,
  .yaml-format-setting,
  .yaml-format-range-setting,
  .yaml-format-file-name {
    flex-direction: column;
    align-items: stretch;
  }

  /* Full-width form controls */
  .yaml-format-button,
  .yaml-format-select,
  .yaml-format-input,
  .yaml-format-file-name-input {
    width: 100%;
  }

  .yaml-format-range-input {
    width: 100%;
  }

  /* Single-column summaries */
  .yaml-format-stats,
  .yaml-format-about-grid {
    grid-template-columns: 1fr;
  }

  .yaml-format-stat,
  .yaml-format-stat--tablet-row-end {
    border-block-end: var(--yaml-border-width) solid var(--yaml-border);
    border-inline-end: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .yaml-format-page * {
    scroll-behavior: auto !important;
  }
}