:root,
:host {
  --jer-select-border: #b6b6b6;
  --jer-select-focus: #777;
  --jer-select-arrow: #777;
  --jer-form-border: 1px solid #ededf0;
  --jer-form-border-focus: 1px solid #e2e2e2;
  /* The selection-highlight and copy-pulse colours mirror the default theme, so
     these static rules degrade to sensible colours when a theme doesn't supply
     the matching variable inline on the container — e.g. a dynamic `iconCopy`
     style function, which can't collapse to one container-level value. */
  --jer-highlight-color: #b3d8ff;
  --jer-icon-copy-color: #268bd2;
}

.jer-visible {
  opacity: 1;
}

.jer-hidden {
  opacity: 0;
}

/* Select styled as per:
https://moderncss.dev/custom-select-styles-with-pure-css/
*/

.jer-select select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: transparent;
  border: none;
  padding: 0 1em 0 0;
  margin: 0;
  /* width: 100%; */
  font-family: inherit;
  font-size: 0.8em;
  color: black;
  cursor: inherit;
  line-height: inherit;
  z-index: 1;
  outline: none;
}
select::-ms-expand {
  display: none;
}

.jer-select {
  display: grid;
  grid-template-areas: 'select';
  align-items: center;
  position: relative;
  min-width: 12ch;
  max-width: 15ch;
  border: 1px solid var(--jer-select-border);
  border-radius: 0.25em;
  padding: 0.25em 0.5em;
  cursor: pointer;
  line-height: 1.1;
  background-color: #fff;
  background-image: linear-gradient(to top, #f9f9f9, #fff 33%);
}
.jer-select select,
.jer-select::after {
  grid-area: select;
}
.jer-select:not(.jer-select--multiple)::after {
  content: '';
  justify-self: end;
  width: 0.8em;
  height: 0.5em;
  background-color: var(--jer-select-arrow);
  clip-path: polygon(100% 0%, 0 0%, 50% 100%);
}

select:focus + .focus {
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border: 1px solid var(--jer-select-focus);
  border-radius: inherit;
}

.jer-select-inner {
  width: 100%;
  text-overflow: ellipsis;
}

.jer-editor-container {
  position: relative;
  font-size: 16px;
  line-height: 1;
  padding: 1em;
  padding-left: 2em;
  /* margin-top: 1em; */
  /* margin-bottom: 1em; */
  border-radius: 0.5em;
  text-align: left;
  /* border: 1px solid green; */
}

.jer-editor-container textarea {
  color: var(--jer-input-color);
  border: var(--jer-form-border);
  border-radius: 0.3em;
  outline: none;
}

.jer-editor-container textarea:focus {
  border: var(--jer-form-border-focus);
}

.jer-editor-container input {
  border: var(--jer-form-border);
  border-radius: 0.3em;
  outline: none;
  font-family: inherit;
}

.jer-editor-container input:focus {
  border: var(--jer-form-border-focus);
}

/* Input highlighted text */
.jer-editor-container ::selection {
  background-color: var(--jer-highlight-color);
}

/* .jer-editor-container select {
  color: red;
} */

/* .jer-component {
} */

/* .jer-collection-element {
  min-height: 1.7em;
} */

.jer-collection-header-row,
.jer-value-main-row {
  display: flex;
  min-height: 1.7em;
  gap: 0.3em;
  align-items: center;
}

.jer-collection-header-row {
  flex-wrap: wrap;
}

.jer-value-main-row {
  gap: 0;
}

/* .jer-brackets {
} */

/* The closing bracket sits at the same column as the opening line (the key),
   matching how JSON pretty-printers align a close bracket under the start of
   the line that opened it. Its container shares the header row's left edge, so
   no offset is needed — and the alignment is deliberately independent of
   `indent`. */
.jer-bracket-outside {
  padding-left: 0;
}

/* Hidden by `display: none` (not `opacity: 0` alone) so a hidden count
   collapses its flex gap and leaves no space between the brackets. The
   `allow-discrete` transition-behavior is set inline alongside the transition
   (so the `all` transition includes `display`), and `@starting-style` below
   gives the fade-in a frame to animate from — together they fade the count
   in/out on collapse instead of popping. `jer-visible`/`jer-hidden` (shared,
   opacity-only) drive the fade; this class only toggles `display`. */
.jer-collection-item-count {
  display: none;
}

.jer-collection-item-count.jer-visible {
  display: block;
}

@starting-style {
  .jer-collection-item-count.jer-visible {
    opacity: 0;
  }
}

.jer-collapse-icon {
  position: absolute;
  left: -1.2em;
  /* Centre vertically on the row (its positioning context) independent of row
     height: top:50% is mid-row, translateY(-50%) pulls back by half the icon's
     own height. Survives row min-height and per-theme icon-scale changes. */
  top: 50%;
  transform: translateY(-50%);
}

/* The collapse animation rotates the icon via `.jer-rotate-90`, which sets the
   same `transform` property, so the centring translate is re-stated here or
   it'd be lost when collapsed. The icon box is square → translate + rotate
   compose cleanly. */
.jer-collapse-icon.jer-rotate-90 {
  transform: translateY(-50%) rotate(-90deg);
}

.jer-collection-inner {
  position: relative;
}

.jer-collection-text-edit,
.jer-collection-text-edit-custom {
  display: flex;
  flex-direction: column;
  gap: 0.3em;
  align-items: flex-start;
  line-height: 1.1em;
}

/* Default <textarea> only: Keep OK/Cancel buttons bound by the text area width
*/
.jer-collection-text-edit {
  width: fit-content;
}

.jer-collection-text-area {
  /* `box-sizing` and `line-height` are pinned (not just inherited) so the
     AutogrowTextArea's real <textarea> and its hidden measuring <span> can't
     drift apart when a host rule targets `textarea`/`input` or applies a global
     `* { box-sizing: border-box }` reset. content-box is the model the sizing
     was designed against, so consumers without a reset see no change. */
  box-sizing: content-box;
  resize: both;
  padding-top: 0.2em;
  padding-left: 0.5em;
  padding-right: 0.5em;
  padding-bottom: 0;
  overflow: hidden;
  max-height: 40em;
  line-height: 1.25em;
  font-family: inherit;
  font-size: 0.85em;
}

.jer-collection-input-button-row {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  font-size: 150%;
  margin-top: 0.4em;
}

/* .jer-collection-error-row {
} */

.jer-collection-error-row-edit {
  position: absolute;
  bottom: 0.5em;
}

.jer-error-slug {
  margin-left: 1em;
}

.jer-value-component {
  position: relative;
}

.jer-value-and-buttons {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding-left: 0.5em;
}

.jer-value-error-row {
  position: absolute;
}

.jer-value-string {
  line-height: 1.3em;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.jer-string-expansion {
  cursor: pointer;
  opacity: 0.6;
  filter: saturate(50%);
}

/* Two classes, so this outweighs the `font: inherit` in the <button> chrome
   reset below — a single class would lose to it on specificity. */
.jer-string-expansion.jer-show-less {
  font-size: 80%;
}

.jer-hyperlink {
  text-decoration: underline;
}

.jer-input-text {
  /* See `.jer-collection-text-area` — pinned so the autogrow <textarea> and its
     measuring <span> stay in sync under a host CSS reset. */
  box-sizing: content-box;
  resize: none;
  margin: 0;
  height: 1.2em;
  padding-left: 0.5em;
  padding-right: 0.5em;
  padding-top: 0.25em;
  padding-bottom: 0.2em;
  min-width: 6em;
  overflow: hidden;
  line-height: 1.2em;
  font-family: inherit;
  font-size: 0.9em;
}

/* .jer-value-number {
} */

/* .jer-value-boolean {
} */

.jer-input-boolean {
  transform: scale(1.5);
  margin-left: 0.3em;
  margin-right: 0.3em;
}

/* .jer-value-null {
} */

/* .jer-value-object {
} */

.jer-key-text {
  word-break: break-word;
  line-height: 1.1em;
  white-space: pre-wrap;
}

/* .jer-key-edit {
} */

/* .jer-value-array {
} */

.jer-value-invalid {
  opacity: 0.5;
  font-style: italic;
}

.jer-input-number {
  min-width: 3em;
  font-size: 90%;
}

/* .jer-input-component {
} */

.jer-edit-buttons,
.jer-confirm-buttons {
  display: flex;
  align-items: center;
  cursor: pointer;
  height: 1em;
  margin-right: 0.2em;
}

/* The icon controls, the collapse chevron and the string show-more/show-less
   affordances are real <button>s for accessibility. This neutralises the
   user-agent button chrome so they render identically to surrounding elements.
   Only properties a <button> won't otherwise take from context are listed:
   background/border/margin/padding/appearance don't inherit, and form controls
   are UA-special-cased so `font`/`color` must be re-asserted (`font: inherit`
   is load-bearing — the icons are sized in `em`, and it carries line-height,
   which keeps the inline expansion buttons on the text baseline). `cursor`
   inherits from the wrapper rule above, whose flexbox also centres the button,
   so neither is needed here. The `>` scoping covers the built-in controls and a
   labelled custom button (both direct children of the wrapper) without reaching
   inside custom-button content; the chevron and the expansion buttons sit
   outside those wrappers, so they're matched on their own classes instead. */
.jer-edit-buttons > button,
.jer-confirm-buttons > button,
button.jer-collapse-icon,
button.jer-string-expansion {
  appearance: none;
  background: none;
  border: none;
  margin: 0;
  padding: 0;
  font: inherit;
  color: inherit;
  vertical-align: baseline;
}

.jer-input-buttons {
  gap: 0.4em;
}

.jer-edit-buttons {
  gap: 0.4em;
  margin-left: 0.5em;
  opacity: 0;
}

/* A custom button whose `Element` renders nothing leaves its wrapper empty.
   `display: none` drops it from the flex gap and from the accessibility tree,
   so a hidden button can't be pressed. */
.jer-custom-button:empty {
  display: none;
}

.jer-confirm-buttons {
  gap: 0.2em;
  margin-left: 0.4em;
}

.jer-edit-buttons:hover {
  opacity: 1;
  position: relative;
}

.jer-collection-header-row:hover > .jer-edit-buttons {
  opacity: 1;
}

.jer-value-main-row:hover > .jer-edit-buttons {
  opacity: 1;
}

.jer-value-and-buttons:hover > .jer-edit-buttons {
  opacity: 1;
}

/* .jer-input-buttons {
} */

.jer-copy-pulse {
  position: relative;
  transition: 0.3s;
}

.jer-copy-pulse:hover {
  opacity: 0.85;
  transition: 0.3s;
  transform: scale(1.2);
}

.jer-copy-pulse:after {
  content: '';
  display: block;
  position: absolute;
  border-radius: 50%;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: all 0.5s;
  box-shadow: 0 0 15px 5px var(--jer-icon-copy-color);
}

.jer-copy-pulse:active:after {
  box-shadow: 0 0 0 0 var(--jer-icon-copy-color);
  position: absolute;
  border-radius: 4em;
  left: 0;
  top: 0;
  opacity: 1;
  transition: 0s;
}

.jer-copy-pulse:active {
  top: 0.07em;
}

.jer-accordion-icon {
  /* font-size: '2em'; */
}

.jer-icon:hover {
  opacity: 0.85;
  transition: 0.3s;
  transform: scale(1.2);
}

/* For displaying keys that are purely <empty string> "" */
.jer-empty-string {
  font-style: italic;
  font-size: 90%;
}

.jer-drag-n-drop-padding {
  height: 0.5em;
  border: 1px dashed #b4b4b4;
  border-radius: 0.3em;
}

/* Region to left of Collection node contents that is clickable to
collapse/expand node*/
.jer-clickzone {
  position: absolute;
  left: -1em;
  top: 1.2em;
  /* border: 1px solid red; */
  height: calc(100% - 0.8em);
}