/* ═══════════════════════════════════════════════════════════
   THEME EDITOR (side panel)
   ═══════════════════════════════════════════════════════════ */

.theme-editor {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  /* Fluid on large screens (24vw ≈ 400px at 1667px, capped 460px);
     floors at the classic 320px, mobile override below unchanged. */
  width: clamp(320px, 24vw, 460px);
  background: var(--lb-surface-bg-overlay);
  border-left: var(--lb-border-width-thin) solid var(--lb-surface-border-overlay);
  box-shadow: var(--lb-shadow-modal);
  z-index: 9999;
  transform: translateX(100%);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  font-family: var(--lb-t-body-m-font-family);
}

.theme-editor--open {
  transform: translateX(0);
}

.theme-editor__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--lb-size-4x) var(--lb-size-4x) var(--lb-size-3x);
  border-bottom: var(--lb-border-width-thin) solid var(--lb-border-muted);
  flex-shrink: 0;
}

.theme-editor__title {
  margin: 0;
  font: var(--lb-t-heading-s-font-weight) var(--lb-t-heading-s-font-size)/var(--lb-t-heading-s-line-height) var(--lb-t-heading-s-font-family);
  color: var(--lb-fg-default);
}

/* Viewport switcher strip — sits between header and body. Global preview
   tool: forces a responsive mode on the whole gallery so the user can
   see how every component looks at S / M / L without resizing the browser
   window. Indicator shows the actual viewport class so 'Auto' is verifiable. */
.theme-editor__viewport {
  display: flex;
  align-items: center;
  gap: var(--lb-size-2x);
  padding: var(--lb-size-3x) var(--lb-size-4x);
  border-bottom: var(--lb-border-width-thin) solid var(--lb-border-muted);
  flex-shrink: 0;
}
.theme-editor__viewport-label {
  font-family: var(--lb-t-label-s-font-family);
  font-size: var(--lb-t-label-s-font-size);
  font-weight: var(--lb-t-label-s-font-weight);
  letter-spacing: var(--lb-t-label-s-letter-spacing);
  color: var(--lb-fg-muted);
  text-transform: uppercase;
}
.theme-editor__viewport-group {
  display: inline-flex;
  gap: var(--lb-size-1x);
}
.theme-editor__viewport-group .lb-btn[aria-pressed="true"] {
  background: var(--lb-action-bg-primary-default);
  border-color: var(--lb-action-border-primary-default);
  color: var(--lb-action-fg-primary-default);
}
.theme-editor__viewport-indicator {
  margin-left: auto;
  font-family: var(--lb-font-family-3);
  font-size: var(--lb-t-caption-m-font-size);
  color: var(--lb-fg-muted);
  background: var(--lb-bg-strong);
  padding: var(--lb-size-0-5x) var(--lb-size-1-5x);
  border-radius: var(--lb-radius-badge);
}

.theme-editor__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--lb-size-4x);
}

/* Import / Export row at the top of the editor body — sits above the
   accordions. Both buttons stretch so the row reads as a paired action.
   No divider — the accordions own their own dividers, repeating it
   here read as visual noise. */
.theme-editor__io {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--lb-size-2x);
}
.theme-editor__io + .theme-editor__io { margin-top: var(--lb-size-2x); }
.theme-editor__io .lb-btn { flex: 1; }
/* Help toggle uses margin-inline-start: auto inline so it floats to the
   right of the I/O row without growing. The icon-button itself has a
   fixed footprint; no flex stretch. */
.theme-editor__io .lb-icon-btn { flex: 0 0 auto; }

/* Help body — collapsible explanation panel above the accordion stack.
   Hidden by default via the [hidden] attribute; the toggle flips that.
   Visual treatment: subtle bg + border so it reads as informational
   (not interactive) and offsets clearly from the accordions below. */
.theme-editor__help {
  margin-bottom: var(--lb-size-4x);
  padding: var(--lb-size-3x) var(--lb-size-4x);
  background: var(--lb-surface-bg-subtle);
  border: var(--lb-border-width-thin) solid var(--lb-surface-border-default);
  border-radius: var(--lb-radius-overlay);
  font-size: var(--lb-t-body-s-font-size);
  line-height: var(--lb-t-body-s-line-height);
  color: var(--lb-fg-muted);
}
.theme-editor__help-title {
  margin: 0 0 var(--lb-size-2x);
  font-size: var(--lb-t-body-m-font-size);
  font-weight: var(--lb-font-weight-semibold);
  color: var(--lb-fg-default);
}
.theme-editor__help p { margin: var(--lb-size-2x) 0; }
.theme-editor__help p:first-of-type { margin-top: 0; }
.theme-editor__help-list {
  margin: var(--lb-size-1x) 0;
  padding-inline-start: var(--lb-size-4x);
  display: flex;
  flex-direction: column;
  gap: var(--lb-size-1x);
}
.theme-editor__help-list li { margin: 0; }
.theme-editor__help strong { color: var(--lb-fg-default); font-weight: var(--lb-font-weight-semibold); }
.theme-editor__help code {
  font-family: var(--lb-font-family-3);
  font-size: 0.92em;
  padding: 0 var(--lb-size-0-5x);
  background: var(--lb-bg-default);
  border-radius: var(--lb-radius-badge);
  color: var(--lb-fg-default);
}
.theme-editor__help-note {
  margin-top: var(--lb-size-3x) !important;
  padding-top: var(--lb-size-2x);
  border-top: var(--lb-border-width-thin) solid var(--lb-surface-border-default);
  font-size: var(--lb-t-body-xs-font-size);
}

/* Sections inside an accordion item — vertical rhythm between knobs in
   the same group (e.g. font-family + base size + density inside Typography). */
.theme-editor__section {
  display: flex;
  flex-direction: column;
  gap: var(--lb-size-2x);
}
.theme-editor__section + .theme-editor__section {
  margin-top: var(--lb-size-5x);
}

/* Accordion-panel content: tighter top padding so the first knob doesn't
   feel detached from the trigger; same bottom rhythm. Uses flex column
   so the per-group Reset button can right-align with align-self. */
.theme-editor__body .lb-accordion__panel-inner {
  padding: var(--lb-size-2x) 0 var(--lb-size-6x);
  color: inherit;
  display: flex;
  flex-direction: column;
}

/* Accordion item dividers run edge-to-edge across the panel for cleaner
   architecture. The panel already provides side padding. */
.theme-editor__body .lb-accordion__item {
  margin: 0 calc(-1 * var(--lb-size-4x));
  padding: 0 var(--lb-size-4x);
}

/* Per-group Reset button — sits at the bottom of an open accordion
   panel, right-aligned, with breathing room above the knobs. Hidden
   by [hidden] (set via JS) when the group has no overrides. */
.theme-editor__group-reset {
  align-self: flex-end;
  margin-top: var(--lb-size-4x);
}


.theme-editor__label {
  margin: 0;
  font: var(--lb-t-label-m-font-weight) var(--lb-t-label-m-font-size)/var(--lb-t-label-m-line-height) var(--lb-t-label-m-font-family);
  letter-spacing: var(--lb-t-label-m-letter-spacing);
  color: var(--lb-fg-default);
}

.theme-editor__row {
  display: flex;
  align-items: center;
  gap: var(--lb-size-2x);
}

.theme-editor__row > input[type="range"] {
  flex: 1;
  accent-color: var(--lb-action-bg-primary-default);
}

.theme-editor__value {
  font-family: 'Roboto Mono', monospace;
  font-size: var(--lb-font-size-xs);
  color: var(--lb-fg-muted);
  min-width: 3.5rem;
  text-align: right;
}

.theme-editor__hint {
  font-size: var(--lb-font-size-xs);
  color: var(--lb-fg-muted);
  line-height: 1.4;
}

.theme-editor__hint code {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.95em;
  background: var(--lb-bg-strong);
  padding: 1px 4px;
  border-radius: 3px;
}

/* Phase 2.1 typography UI — sublabel for slot/mode/role rows */
.theme-editor__sublabel {
  font-family: var(--lb-t-label-s-font-family);
  font-size: var(--lb-t-label-s-font-size);
  font-weight: var(--lb-font-weight-semibold);
  color: var(--lb-fg-default);
  letter-spacing: var(--lb-t-label-s-letter-spacing);
}
.theme-editor__hint-inline {
  font-weight: var(--lb-font-weight-regular);
  color: var(--lb-fg-muted);
  margin-left: var(--lb-size-1x);
  font-size: var(--lb-t-caption-m-font-size);
}
/* Stack row — label on top, control underneath. Used by family
   pickers where the role hint is too long for a side-by-side row. */
.theme-editor__row--stack {
  flex-direction: column;
  align-items: stretch;
  gap: var(--lb-size-1x);
}
.theme-editor__row--stack + .theme-editor__row--stack {
  margin-top: var(--lb-size-2x);
}
/* Role-map row — tighter than a stack, label sits left of the select */
.theme-editor__row--rolemap {
  margin-top: var(--lb-size-1x);
}
.theme-editor__row--rolemap:first-of-type {
  margin-top: 0;
}

/* Collapsible advanced section (role-map) */
.theme-editor__section--collapsible {
  border-top: var(--lb-border-width-thin) solid var(--lb-border-muted);
  padding-top: var(--lb-size-3x);
}
.theme-editor__collapse-trigger {
  display: flex;
  align-items: center;
  gap: var(--lb-size-1x);
  width: 100%;
  padding: 0;
  margin: 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--lb-t-label-m-font-family);
  font-size: var(--lb-t-label-m-font-size);
  font-weight: var(--lb-t-label-m-font-weight);
  color: var(--lb-fg-default);
  text-align: left;
}
.theme-editor__collapse-trigger:hover {
  color: var(--lb-fg-accent);
}
.theme-editor__collapse-chevron {
  transition: transform 150ms ease;
  color: var(--lb-fg-muted);
}
.theme-editor__collapse-body {
  margin-top: var(--lb-size-2x);
}

/* Swatches */
.theme-editor__swatches {
  display: flex;
  gap: var(--lb-size-1x);
  flex: 1;
}

.theme-editor__swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 0;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease;
}

.theme-editor__swatch:hover {
  transform: scale(1.1);
}

.theme-editor__swatch--active {
  border-color: var(--lb-fg-default);
  transform: scale(1.1);
}

.theme-editor__swatch:focus-visible {
  outline: var(--lb-border-width-thin) solid var(--lb-border-focus);
  outline-offset: 2px;
}

.theme-editor__color {
  width: 36px;
  height: 28px;
  padding: 0;
  border: var(--lb-border-width-thin) solid var(--lb-border-default);
  border-radius: var(--lb-radius-interactive);
  background: none;
  cursor: pointer;
}
.theme-editor__color::-webkit-color-swatch-wrapper { padding: 2px; }
.theme-editor__color::-webkit-color-swatch { border: none; border-radius: 3px; }

/* Feedback panel (shown after picking a brand color) */
.theme-editor__feedback {
  margin-top: var(--lb-size-2x);
  padding: var(--lb-size-2x) var(--lb-size-3x);
  background: var(--lb-bg-strong);
  border-radius: var(--lb-radius-field);
  font-size: var(--lb-t-body-s-font-size);
  color: var(--lb-fg-default);
}

.theme-editor__feedback-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--lb-size-2x);
  line-height: 1.5;
}

.theme-editor__feedback-row strong {
  font-weight: var(--lb-font-weight-semibold);
}

.theme-editor__feedback-row span + span {
  display: inline-flex;
  align-items: center;
  gap: var(--lb-size-1x);
}

.theme-editor__badge {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--lb-size-1x);
  border-radius: var(--lb-radius-interactive);
  font-size: var(--lb-font-size-2xs);
  font-weight: var(--lb-font-weight-semibold);
  line-height: 1.6;
  border: var(--lb-border-width-thin) solid transparent;
}

.theme-editor__badge--ok   { background: var(--lb-bg-success); color: var(--lb-fg-success); border-color: var(--lb-border-success); }
.theme-editor__badge--warn { background: var(--lb-bg-warning); color: var(--lb-fg-warning); border-color: var(--lb-border-warning); }
.theme-editor__badge--fail { background: var(--lb-bg-danger);  color: var(--lb-fg-danger);  border-color: var(--lb-border-danger); }

/* Footer */
.theme-editor__footer {
  padding: var(--lb-size-3x) var(--lb-size-4x);
  border-top: var(--lb-border-width-thin) solid var(--lb-border-muted);
  flex-shrink: 0;
}

/* Mobile */
@media (max-width: 500px) {
  .theme-editor {
    width: 100vw;
  }
}


/* ── Presets ── */
.theme-editor__presets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--lb-size-1x);
}
.theme-editor__preset {
  display: flex;
  align-items: center;
  gap: var(--lb-size-1-5x);
  padding: var(--lb-size-1-5x) var(--lb-size-2x);
  background: var(--lb-bg-default);
  border: var(--lb-border-width-thin) solid var(--lb-border-muted);
  border-radius: var(--lb-radius-field);
  cursor: pointer;
  font: inherit;
  color: var(--lb-fg-default);
}
.theme-editor__preset:hover { border-color: var(--lb-border-strong); background: var(--lb-bg-strong); }
.theme-editor__preset:focus-visible { outline: var(--lb-border-width-medium) solid var(--lb-border-focus); outline-offset: var(--lb-size-0-5x); }
.theme-editor__preset--active { border-color: var(--lb-border-accent); background: var(--lb-bg-accent-subtle); }
.theme-editor__preset-dot { width: var(--lb-size-3x); height: var(--lb-size-3x); border-radius: var(--lb-radius-full); flex-shrink: 0; border: var(--lb-border-width-thin) solid var(--lb-surface-border-default); }
.theme-editor__preset-name { font-size: var(--lb-t-label-s-font-size); font-weight: var(--lb-t-label-s-font-weight); }



/* ── Help link (opens the How-it-works modal) ── */
.theme-editor__help-link-row { margin-top: var(--lb-size-3x); }
.theme-editor__help-link {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  cursor: pointer;
}