*, ::before, ::after {
  --tw-border-spacing-x: 0;
  --tw-border-spacing-y: 0;
  --tw-translate-x: 0;
  --tw-translate-y: 0;
  --tw-rotate: 0;
  --tw-skew-x: 0;
  --tw-skew-y: 0;
  --tw-scale-x: 1;
  --tw-scale-y: 1;
  --tw-pan-x:  ;
  --tw-pan-y:  ;
  --tw-pinch-zoom:  ;
  --tw-scroll-snap-strictness: proximity;
  --tw-gradient-from-position:  ;
  --tw-gradient-via-position:  ;
  --tw-gradient-to-position:  ;
  --tw-ordinal:  ;
  --tw-slashed-zero:  ;
  --tw-numeric-figure:  ;
  --tw-numeric-spacing:  ;
  --tw-numeric-fraction:  ;
  --tw-ring-inset:  ;
  --tw-ring-offset-width: 0px;
  --tw-ring-offset-color: #fff;
  --tw-ring-color: rgb(59 130 246 / 0.5);
  --tw-ring-offset-shadow: 0 0 #0000;
  --tw-ring-shadow: 0 0 #0000;
  --tw-shadow: 0 0 #0000;
  --tw-shadow-colored: 0 0 #0000;
  --tw-blur:  ;
  --tw-brightness:  ;
  --tw-contrast:  ;
  --tw-grayscale:  ;
  --tw-hue-rotate:  ;
  --tw-invert:  ;
  --tw-saturate:  ;
  --tw-sepia:  ;
  --tw-drop-shadow:  ;
  --tw-backdrop-blur:  ;
  --tw-backdrop-brightness:  ;
  --tw-backdrop-contrast:  ;
  --tw-backdrop-grayscale:  ;
  --tw-backdrop-hue-rotate:  ;
  --tw-backdrop-invert:  ;
  --tw-backdrop-opacity:  ;
  --tw-backdrop-saturate:  ;
  --tw-backdrop-sepia:  ;
  --tw-contain-size:  ;
  --tw-contain-layout:  ;
  --tw-contain-paint:  ;
  --tw-contain-style:  ;
}

::backdrop {
  --tw-border-spacing-x: 0;
  --tw-border-spacing-y: 0;
  --tw-translate-x: 0;
  --tw-translate-y: 0;
  --tw-rotate: 0;
  --tw-skew-x: 0;
  --tw-skew-y: 0;
  --tw-scale-x: 1;
  --tw-scale-y: 1;
  --tw-pan-x:  ;
  --tw-pan-y:  ;
  --tw-pinch-zoom:  ;
  --tw-scroll-snap-strictness: proximity;
  --tw-gradient-from-position:  ;
  --tw-gradient-via-position:  ;
  --tw-gradient-to-position:  ;
  --tw-ordinal:  ;
  --tw-slashed-zero:  ;
  --tw-numeric-figure:  ;
  --tw-numeric-spacing:  ;
  --tw-numeric-fraction:  ;
  --tw-ring-inset:  ;
  --tw-ring-offset-width: 0px;
  --tw-ring-offset-color: #fff;
  --tw-ring-color: rgb(59 130 246 / 0.5);
  --tw-ring-offset-shadow: 0 0 #0000;
  --tw-ring-shadow: 0 0 #0000;
  --tw-shadow: 0 0 #0000;
  --tw-shadow-colored: 0 0 #0000;
  --tw-blur:  ;
  --tw-brightness:  ;
  --tw-contrast:  ;
  --tw-grayscale:  ;
  --tw-hue-rotate:  ;
  --tw-invert:  ;
  --tw-saturate:  ;
  --tw-sepia:  ;
  --tw-drop-shadow:  ;
  --tw-backdrop-blur:  ;
  --tw-backdrop-brightness:  ;
  --tw-backdrop-contrast:  ;
  --tw-backdrop-grayscale:  ;
  --tw-backdrop-hue-rotate:  ;
  --tw-backdrop-invert:  ;
  --tw-backdrop-opacity:  ;
  --tw-backdrop-saturate:  ;
  --tw-backdrop-sepia:  ;
  --tw-contain-size:  ;
  --tw-contain-layout:  ;
  --tw-contain-paint:  ;
  --tw-contain-style:  ;
}

/*
! tailwindcss v3.4.19 | MIT License | https://tailwindcss.com
*/

/*
1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
2. Allow adding a border to an element by just adding a border-width. (https://github.com/tailwindcss/tailwindcss/pull/116)
*/

*,
::before,
::after {
  box-sizing: border-box;
  /* 1 */
  border-width: 0;
  /* 2 */
  border-style: solid;
  /* 2 */
  border-color: #e5e7eb;
  /* 2 */
}

::before,
::after {
  --tw-content: '';
}

/*
1. Use a consistent sensible line-height in all browsers.
2. Prevent adjustments of font size after orientation changes in iOS.
3. Use a more readable tab size.
4. Use the user's configured `sans` font-family by default.
5. Use the user's configured `sans` font-feature-settings by default.
6. Use the user's configured `sans` font-variation-settings by default.
7. Disable tap highlights on iOS
*/

html,
:host {
  line-height: 1.5;
  /* 1 */
  -webkit-text-size-adjust: 100%;
  /* 2 */
  -moz-tab-size: 4;
  /* 3 */
  -o-tab-size: 4;
     tab-size: 4;
  /* 3 */
  font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  /* 4 */
  font-feature-settings: normal;
  /* 5 */
  font-variation-settings: normal;
  /* 6 */
  -webkit-tap-highlight-color: transparent;
  /* 7 */
}

/*
1. Remove the margin in all browsers.
2. Inherit line-height from `html` so users can set them as a class directly on the `html` element.
*/

body {
  margin: 0;
  /* 1 */
  line-height: inherit;
  /* 2 */
}

/*
1. Add the correct height in Firefox.
2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
3. Ensure horizontal rules are visible by default.
*/

hr {
  height: 0;
  /* 1 */
  color: inherit;
  /* 2 */
  border-top-width: 1px;
  /* 3 */
}

/*
Add the correct text decoration in Chrome, Edge, and Safari.
*/

abbr:where([title]) {
  -webkit-text-decoration: underline dotted;
          text-decoration: underline dotted;
}

/*
Remove the default font size and weight for headings.
*/

h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: inherit;
  font-weight: inherit;
}

/*
Reset links to optimize for opt-in styling instead of opt-out.
*/

a {
  color: inherit;
  text-decoration: inherit;
}

/*
Add the correct font weight in Edge and Safari.
*/

b,
strong {
  font-weight: bolder;
}

/*
1. Use the user's configured `mono` font-family by default.
2. Use the user's configured `mono` font-feature-settings by default.
3. Use the user's configured `mono` font-variation-settings by default.
4. Correct the odd `em` font sizing in all browsers.
*/

code,
kbd,
samp,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  /* 1 */
  font-feature-settings: normal;
  /* 2 */
  font-variation-settings: normal;
  /* 3 */
  font-size: 1em;
  /* 4 */
}

/*
Add the correct font size in all browsers.
*/

small {
  font-size: 80%;
}

/*
Prevent `sub` and `sup` elements from affecting the line height in all browsers.
*/

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

/*
1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
3. Remove gaps between table borders by default.
*/

table {
  text-indent: 0;
  /* 1 */
  border-color: inherit;
  /* 2 */
  border-collapse: collapse;
  /* 3 */
}

/*
1. Change the font styles in all browsers.
2. Remove the margin in Firefox and Safari.
3. Remove default padding in all browsers.
*/

button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  /* 1 */
  font-feature-settings: inherit;
  /* 1 */
  font-variation-settings: inherit;
  /* 1 */
  font-size: 100%;
  /* 1 */
  font-weight: inherit;
  /* 1 */
  line-height: inherit;
  /* 1 */
  letter-spacing: inherit;
  /* 1 */
  color: inherit;
  /* 1 */
  margin: 0;
  /* 2 */
  padding: 0;
  /* 3 */
}

/*
Remove the inheritance of text transform in Edge and Firefox.
*/

button,
select {
  text-transform: none;
}

/*
1. Correct the inability to style clickable types in iOS and Safari.
2. Remove default button styles.
*/

button,
input:where([type='button']),
input:where([type='reset']),
input:where([type='submit']) {
  -webkit-appearance: button;
  /* 1 */
  background-color: transparent;
  /* 2 */
  background-image: none;
  /* 2 */
}

/*
Use the modern Firefox focus style for all focusable elements.
*/

:-moz-focusring {
  outline: auto;
}

/*
Remove the additional `:invalid` styles in Firefox. (https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737)
*/

:-moz-ui-invalid {
  box-shadow: none;
}

/*
Add the correct vertical alignment in Chrome and Firefox.
*/

progress {
  vertical-align: baseline;
}

/*
Correct the cursor style of increment and decrement buttons in Safari.
*/

::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
  height: auto;
}

/*
1. Correct the odd appearance in Chrome and Safari.
2. Correct the outline style in Safari.
*/

[type='search'] {
  -webkit-appearance: textfield;
  /* 1 */
  outline-offset: -2px;
  /* 2 */
}

/*
Remove the inner padding in Chrome and Safari on macOS.
*/

::-webkit-search-decoration {
  -webkit-appearance: none;
}

/*
1. Correct the inability to style clickable types in iOS and Safari.
2. Change font properties to `inherit` in Safari.
*/

::-webkit-file-upload-button {
  -webkit-appearance: button;
  /* 1 */
  font: inherit;
  /* 2 */
}

/*
Add the correct display in Chrome and Safari.
*/

summary {
  display: list-item;
}

/*
Removes the default spacing and border for appropriate elements.
*/

blockquote,
dl,
dd,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
figure,
p,
pre {
  margin: 0;
}

fieldset {
  margin: 0;
  padding: 0;
}

legend {
  padding: 0;
}

ol,
ul,
menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

/*
Reset default styling for dialogs.
*/

dialog {
  padding: 0;
}

/*
Prevent resizing textareas horizontally by default.
*/

textarea {
  resize: vertical;
}

/*
1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
2. Set the default placeholder color to the user's configured gray 400 color.
*/

input::-moz-placeholder, textarea::-moz-placeholder {
  opacity: 1;
  /* 1 */
  color: #9ca3af;
  /* 2 */
}

input::placeholder,
textarea::placeholder {
  opacity: 1;
  /* 1 */
  color: #9ca3af;
  /* 2 */
}

/*
Set the default cursor for buttons.
*/

button,
[role="button"] {
  cursor: pointer;
}

/*
Make sure disabled buttons don't get the pointer cursor.
*/

:disabled {
  cursor: default;
}

/*
1. Make replaced elements `display: block` by default. (https://github.com/mozdevs/cssremedy/issues/14)
2. Add `vertical-align: middle` to align replaced elements more sensibly by default. (https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210)
   This can trigger a poorly considered lint error in some tools but is included by design.
*/

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  /* 1 */
  vertical-align: middle;
  /* 2 */
}

/*
Constrain images and videos to the parent width and preserve their intrinsic aspect ratio. (https://github.com/mozdevs/cssremedy/issues/14)
*/

img,
video {
  max-width: 100%;
  height: auto;
}

/* Make elements with the HTML hidden attribute stay hidden by default */

[hidden]:where(:not([hidden="until-found"])) {
  display: none;
}

.container {
  width: 100%;
}

@media (min-width: 640px) {
  .container {
    max-width: 640px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1024px;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: 1536px;
  }
}

.fixed {
  position: fixed;
}

.relative {
  position: relative;
}

.mb-1 {
  margin-bottom: 0.25rem;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.ml-2 {
  margin-left: 0.5rem;
}

.ml-auto {
  margin-left: auto;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-3 {
  margin-top: 0.75rem;
}

.mt-4 {
  margin-top: 1rem;
}

.\!block {
  display: block !important;
}

.block {
  display: block;
}

.flex {
  display: flex;
}

.grid {
  display: grid;
}

.contents {
  display: contents;
}

.hidden {
  display: none;
}

.h-full {
  height: 100%;
}

.min-h-0 {
  min-height: 0px;
}

.w-\[210px\] {
  width: 210px;
}

.w-\[400px\] {
  width: 400px;
}

.w-full {
  width: 100%;
}

.min-w-0 {
  min-width: 0px;
}

.flex-1 {
  flex: 1 1 0%;
}

.flex-none {
  flex: none;
}

.resize {
  resize: both;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.gap-1 {
  gap: 0.25rem;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 0.75rem;
}

.gap-4 {
  gap: 1rem;
}

.overflow-y-auto {
  overflow-y: auto;
}

.border {
  border-width: 1px;
}

.px-1 {
  padding-left: 0.25rem;
  padding-right: 0.25rem;
}

.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.py-2\.5 {
  padding-top: 0.625rem;
  padding-bottom: 0.625rem;
}

.pb-2 {
  padding-bottom: 0.5rem;
}

.pb-4 {
  padding-bottom: 1rem;
}

.pt-4 {
  padding-top: 1rem;
}

.text-\[13px\] {
  font-size: 13px;
}

.text-\[15px\] {
  font-size: 15px;
}

.text-base {
  font-size: 1rem;
  line-height: 1.5rem;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.uppercase {
  text-transform: uppercase;
}

.tabular-nums {
  --tw-numeric-spacing: tabular-nums;
  font-variant-numeric: var(--tw-ordinal) var(--tw-slashed-zero) var(--tw-numeric-figure) var(--tw-numeric-spacing) var(--tw-numeric-fraction);
}

.tracking-tight {
  letter-spacing: -0.025em;
}

.tracking-wider {
  letter-spacing: 0.05em;
}

.blur {
  --tw-blur: blur(8px);
  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
}

.invert {
  --tw-invert: invert(100%);
  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
}

.filter {
  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
}

/* Theme tokens are injected by src/theme.js via injectThemeCSS() at runtime.
 * No CSS custom properties are defined statically — the single source of truth
 * for all colors (canvas + CSS) lives in src/theme.js. */

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.surface  {
  background: var(--surface);
}

.bordered {
  border: 1px solid var(--border);
}

/* ── Palette card ─────────────────────────────────────────────────────────── */

.palette-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: grab;
  transition: border-color .12s ease, transform .06s ease;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}

.palette-item:hover   {
  border-color: var(--accent);
}

.palette-item:active  {
  cursor: grabbing;
  transform: scale(.98);
}

.palette-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding: 14px 4px 2px;
}

.palette-cat:first-child {
  padding-top: 2px;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .12s ease, background .12s ease;
}

.btn:hover          {
  border-color: var(--accent);
}

.btn-primary        {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

.btn-primary:hover  {
  filter: brightness(1.06);
}

.btn-danger         {
  color: var(--accent-fg);
  background: var(--danger);
  border-color: var(--danger);
}

.btn-icon           {
  padding: 6px 9px;
  line-height: 1;
}

/* ── Form fields (properties panel + settings modal) ──────────────────────── */

.field-label {
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 4px;
  display: block;
}

.field-input {
  width: 100%;
  box-sizing: border-box;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 7px;
  padding: 7px 9px;
  font-size: 13px;
  outline: none;
}

.field-input:focus {
  border-color: var(--accent);
}

/* ── Sun / moon theme toggle pill ─────────────────────────────────────────── */

.theme-toggle {
  position: relative;
  width: 62px;
  height: 30px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 0;
  flex: none;
  --knob-x: 31px;
}

.theme-toggle .icon {
  position: absolute;
  top: 0;
  width: 30px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--fg-muted);
  pointer-events: none;
}

.theme-toggle .icon.sun  {
  left: 1px;
}

.theme-toggle .icon.moon {
  right: 1px;
}

.theme-toggle .knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 25px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent);
  transition: transform .18s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] .theme-toggle .knob {
  transform: translateX(var(--knob-x));
}

[data-theme="light"] .theme-toggle .icon.sun  {
  color: var(--accent-fg);
}

[data-theme="dark"]  .theme-toggle .icon.moon {
  color: var(--accent-fg);
}

#canvas {
  background: var(--canvas-bg);
}

.scrollable::-webkit-scrollbar {
  width: 8px;
}

.scrollable::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

/* ── Modal (settings + results) ───────────────────────────────────────────── */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: oklch(0 0 0 / 0.44);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-card.wide {
  width: min(860px, calc(100vw - 32px));
}

.modal-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 15px;
  font-weight: 600;
}

.modal-body  {
  padding: 20px;
  overflow-y: auto;
}

.modal-foot  {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.settings-section {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 4px 0 10px;
}

.settings-section:not(:first-child) {
  margin-top: 24px;
}

.plot-wrap {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* ── Python code editor (CodeMirror lives in the properties panel) ────────── */

.code-section-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 14px 0 6px;
}

.code-section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.code-section-actions {
  margin-left: auto;
  display: flex;
  gap: 4px;
}

.code-link {
  font-size: 11px;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 4px;
}

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

.code-sig {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  color: var(--fg-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  margin-bottom: 6px;
  white-space: pre-wrap;
}

.code-wrap {
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
}

.code-wrap .CodeMirror {
  height: 260px;
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* CodeMirror's "default" theme assumes a white background — re-tint for our
   OKLCH light surface so the editor blends with the rest of the panel. */

.code-wrap .CodeMirror,
.code-wrap .CodeMirror-gutters {
  background: var(--surface-2);
  color: var(--fg);
  border: none;
}

.code-wrap .CodeMirror-linenumber {
  color: var(--fg-muted);
}

/* The dracula dark theme already paints itself fully; don't fight it. */

[data-theme="dark"] .code-wrap .CodeMirror.cm-s-dracula,
[data-theme="dark"] .code-wrap .CodeMirror.cm-s-dracula .CodeMirror-gutters {
  background: oklch(0.22 0.012 260);
}

/* ── Canvas overlays (hover toolbars, tooltips, context menu, undo toast) ───
 * All positioned in the canvas container's pixel space by src/canvas.js.
 * The root ignores pointer events; interactive children opt back in. */

.ov-root {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

.ov-root > * {
  position: absolute;
}

/* Hover chrome — toolbar snaps in instantly, tooltip fades in briefly.
 * contain: layout isolates these from the rest of the DOM tree. */

.ov-bar, .ov-tip, .ov-hint {
  contain: layout style;
}

.ov-bar  {
  opacity: 0;
}

.ov-tip, .ov-hint {
  opacity: 0;
  transition: opacity .08s ease;
  will-change: opacity;
}

/* Floating action toolbar (block: edit/duplicate/delete · wire: delete). */

.ov-bar {
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 6px 20px oklch(0 0 0 / 0.18);
  transform: translate(-50%, calc(-100% - 10px)) scale(.96);
  pointer-events: none;
}

.ov-bar.show {
  opacity: 1;
}

.ov-bar-btn {
  border: none;
  background: transparent;
  color: var(--fg);
  width: 30px;
  height: 30px;
  border-radius: 7px;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .12s ease, color .12s ease;
  pointer-events: auto;
}

.ov-bar-btn:hover        {
  background: var(--surface-2);
}

.ov-bar-btn.danger:hover {
  background: var(--danger);
  color: var(--accent-fg);
}

/* Rich block tooltip (type · params · description). */

.ov-tip {
  max-width: 230px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 10px;
  box-shadow: 0 6px 20px oklch(0 0 0 / 0.16);
  transform: translate(-50%, 4px);
  font-size: 12px;
  pointer-events: none;
}

.ov-tip.show {
  opacity: 1;
}

.ov-tip-title  {
  font-weight: 600;
}

.ov-tip-sym    {
  color: var(--accent);
  font-weight: 500;
}

.ov-tip-params {
  color: var(--fg);
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.ov-tip-desc   {
  color: var(--fg-muted);
  margin-top: 4px;
  line-height: 1.35;
}

/* "Drag to connect" port hint. */

.ov-hint {
  transform: translate(0, -50%);
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 7px;
  border-radius: 6px;
  white-space: nowrap;
  box-shadow: 0 3px 10px oklch(0 0 0 / 0.20);
}

.ov-hint.show {
  opacity: 1;
}

/* Right-click context menu. */

.ov-menu {
  min-width: 168px;
  padding: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 30px oklch(0 0 0 / 0.24);
  pointer-events: auto;
  opacity: 0;
  transform: scale(.97);
  transform-origin: top left;
  transition: opacity .1s ease, transform .1s ease;
}

.ov-menu.show {
  opacity: 1;
  transform: scale(1);
}

.ov-menu-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  border: none;
  background: transparent;
  color: var(--fg);
  padding: 7px 9px;
  border-radius: 6px;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.ov-menu-item:hover        {
  background: var(--surface-2);
}

.ov-menu-item.danger       {
  color: var(--danger);
}

.ov-menu-item.danger:hover {
  background: var(--danger);
  color: var(--accent-fg);
}

.ov-menu-ic  {
  width: 16px;
  text-align: center;
  opacity: .85;
}

.ov-menu-sep {
  height: 1px;
  margin: 4px 6px;
  background: var(--border);
}

/* Undo toast (bottom-center, 10 s). */

.ov-toast {
  left: 50%;
  bottom: 20px;
  transform: translate(-50%, 12px);
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px 10px 16px;
  box-shadow: 0 10px 30px oklch(0 0 0 / 0.26);
  font-size: 13px;
  opacity: 0;
  pointer-events: auto;
  transition: opacity .2s ease, transform .2s cubic-bezier(.34,1.4,.64,1);
}

.ov-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.ov-toast-undo {
  border: none;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 7px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.ov-toast-undo:hover {
  filter: brightness(1.06);
}

/* Properties-panel flash when an "edit" intent jumps focus here. */

.panel-flash {
  animation: panelFlash .6s ease;
}

@keyframes panelFlash {
  0%   {
    box-shadow: inset 0 0 0 2px var(--accent);
  }

  100% {
    box-shadow: inset 0 0 0 2px transparent;
  }
}

/* Spinner used while Pyodide is being fetched. */

.spinner {
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
}

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

@media (min-width: 1024px) {
  .lg\:inline {
    display: inline;
  }
}