:where(.proposal-library, .proposal-editor, .proposal-dialog),
:where(.proposal-library, .proposal-editor, .proposal-dialog) *,
:where(.proposal-library, .proposal-editor, .proposal-dialog) *::before,
:where(.proposal-library, .proposal-editor, .proposal-dialog) *::after {
  box-sizing: border-box;
}

:where(.proposal-library, .proposal-editor) {
  --pe-ink: #17131f;
  --pe-muted: #6e6875;
  --pe-border: #ded9e2;
  --pe-surface: #ffffff;
  --pe-canvas: #e9e5df;
  --pe-soft: #f6f3ee;
  --pe-accent: #df2636;
  --pe-accent-dark: #b81525;
  --pe-focus: #276ef1;
  --pe-success: #14734b;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  color: var(--pe-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:where(.proposal-library, .proposal-editor) button,
:where(.proposal-library, .proposal-editor) input,
:where(.proposal-library, .proposal-editor) select,
:where(.proposal-library, .proposal-editor) textarea,
.proposal-dialog button,
.proposal-dialog input,
.proposal-dialog select,
.proposal-dialog textarea {
  max-width: 100%;
  min-height: 44px;
  font: inherit;
}

:where(.proposal-library, .proposal-editor, .proposal-dialog) :focus-visible {
  outline: 3px solid var(--pe-focus, #276ef1);
  outline-offset: 2px;
}

:where(.proposal-library, .proposal-editor, .proposal-dialog) button {
  touch-action: manipulation;
}

:where(.proposal-library, .proposal-editor, .proposal-dialog) button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.proposal-button,
.proposal-icon-button,
.proposal-segment button,
.proposal-inline-actions button,
.proposal-device-switch button {
  appearance: none;
  border: 1px solid var(--pe-border);
  border-radius: 12px;
  padding: 9px 14px;
  color: var(--pe-ink);
  background: var(--pe-surface);
  cursor: pointer;
  font-weight: 750;
  line-height: 1.15;
}

.proposal-button:hover,
.proposal-icon-button:hover,
.proposal-segment button:hover,
.proposal-inline-actions button:hover {
  border-color: #aaa2b2;
  background: #faf9fb;
}

.proposal-button.is-primary {
  border-color: var(--pe-accent);
  color: #fff;
  background: var(--pe-accent);
}

.proposal-button.is-primary:hover {
  border-color: var(--pe-accent-dark);
  background: var(--pe-accent-dark);
}

.proposal-button.is-danger {
  color: #b81525;
}

.proposal-icon-button {
  display: inline-grid;
  width: 44px;
  flex: 0 0 44px;
  place-items: center;
  padding: 0;
  font-size: 20px;
}

/* Biblioteca */

.proposal-library {
  overflow-x: clip;
  padding: clamp(16px, 4vw, 40px);
}

.proposal-library-header {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
  margin: 0 auto 24px;
  max-width: 1440px;
}

.proposal-library-header h1,
.proposal-template-origin h2,
.proposal-library-card h3,
.proposal-dialog h2 {
  margin: 0;
  color: var(--pe-ink);
  line-height: 1.08;
}

.proposal-library-header h1 {
  font-size: clamp(30px, 7vw, 52px);
}

.proposal-library-header p:not(.proposal-eyebrow),
.proposal-template-origin p {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--pe-muted);
  line-height: 1.55;
}

.proposal-eyebrow,
.proposal-panel-kicker {
  margin: 0 0 5px;
  color: var(--pe-accent);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.proposal-template-origin {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto 22px;
  border: 1px solid #cabfd0;
  border-radius: 20px;
  padding: 18px;
  background: linear-gradient(135deg, #f8f4f7, #fff);
}

.proposal-template-origin > .proposal-button {
  grid-column: 1 / -1;
  width: 100%;
}

.proposal-template-origin__icon {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: 16px;
  color: #fff;
  background: var(--pe-ink);
  font-size: 22px;
  font-weight: 900;
}

.proposal-library-filters {
  display: grid;
  gap: 10px;
  max-width: 1440px;
  margin: 0 auto 20px;
}

.proposal-library-filters input,
.proposal-library-filters select,
.proposal-field input,
.proposal-field select,
.proposal-field textarea {
  width: 100%;
  border: 1px solid var(--pe-border, #ded9e2);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--pe-ink, #17131f);
  background: #fff;
}

.proposal-library-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  max-width: 1440px;
  margin: 0 auto;
}

.proposal-library-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--pe-border);
  border-radius: 20px;
  background: var(--pe-surface);
  box-shadow: 0 10px 30px rgba(23, 19, 31, 0.06);
}

.proposal-library-card__topline,
.proposal-library-card__body,
.proposal-library-card__actions {
  padding: 16px;
}

.proposal-library-card__topline {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0;
}

.proposal-status,
.proposal-kind {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 999px;
  padding: 5px 9px;
  color: #514b58;
  background: #f0edf2;
  font-size: 12px;
  font-weight: 800;
}

.proposal-status.is-published { color: #09613c; background: #e2f5eb; }
.proposal-status.is-review { color: #825600; background: #fff1c7; }
.proposal-status.is-locked { color: #513463; background: #eee4f2; }

.proposal-library-card__body h3 {
  overflow-wrap: anywhere;
  font-size: 21px;
}

.proposal-card-meta {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.proposal-card-meta div { min-width: 0; }
.proposal-card-meta dt { color: var(--pe-muted); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.proposal-card-meta dd { margin: 3px 0 0; overflow-wrap: anywhere; }

.proposal-public-url {
  display: block;
  overflow: hidden;
  color: #235ec6;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.proposal-library-card__actions,
.proposal-panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--pe-border);
  background: #fbfafc;
}

.proposal-library-card__actions .proposal-button {
  flex: 1 1 140px;
}

.proposal-library-state {
  display: grid;
  min-height: 220px;
  place-items: center;
  align-content: center;
  gap: 10px;
  border: 1px dashed var(--pe-border);
  border-radius: 20px;
  padding: 28px;
  color: var(--pe-muted);
  text-align: center;
}

.proposal-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid #ddd5df;
  border-top-color: var(--pe-accent);
  border-radius: 50%;
  animation: proposal-spin 0.8s linear infinite;
}

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

.proposal-dialog {
  width: min(680px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  overflow: auto;
  border: 0;
  border-radius: 22px;
  padding: 0;
  color: #17131f;
  background: #fff;
  box-shadow: 0 28px 100px rgba(23, 19, 31, 0.32);
}

.proposal-dialog::backdrop { background: rgba(23, 19, 31, 0.62); backdrop-filter: blur(4px); }
.proposal-dialog__intro { margin: 0 0 16px; color: var(--pe-muted); font-size: 13px; line-height: 1.45; }
.proposal-dialog form { padding: 18px; }
.proposal-dialog__header { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; margin-bottom: 18px; }
.proposal-dialog__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 20px; }

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

.proposal-field {
  display: grid;
  min-width: 0;
  gap: 6px;
  color: #57515e;
  font-size: 13px;
  font-weight: 720;
}

.proposal-field small { font-weight: 500; }
.proposal-slug-field { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 6px; }
.proposal-form-message { min-height: 22px; margin-top: 10px; color: #625c68; font-size: 13px; }
.proposal-form-message.is-error { color: #a51220; }
.proposal-form-message.is-success { color: var(--pe-success); }

/* Editor */

.proposal-editor {
  position: relative;
  min-height: 100dvh;
  overflow-x: clip;
  background: var(--pe-canvas);
  isolation: isolate;
}

.proposal-editor-loading,
.proposal-editor-canvas-error {
  display: grid;
  min-height: 280px;
  place-items: center;
  padding: 24px;
  color: #655e6b;
  text-align: center;
}

.proposal-editor-toolbar {
  position: sticky;
  top: 0;
  z-index: 60;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 10px;
  align-items: center;
  border-bottom: 1px solid var(--pe-border);
  padding: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 5px 18px rgba(23, 19, 31, 0.08);
  backdrop-filter: blur(14px);
}

.proposal-toolbar-leading,
.proposal-toolbar-history,
.proposal-toolbar-actions,
.proposal-device-switch {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
}

.proposal-editor-title {
  display: grid;
  min-width: 0;
}

.proposal-editor-title span { color: var(--pe-muted); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.proposal-editor-title strong { overflow: hidden; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.proposal-toolbar-history { justify-self: end; }

.proposal-save-state {
  display: flex;
  grid-column: 1 / -1;
  min-height: 32px;
  align-items: center;
  gap: 7px;
  color: var(--pe-muted);
  font-size: 12px;
  font-weight: 750;
}

.proposal-save-state > span:first-child {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: #97909c;
}

.proposal-save-state.is-saved > span:first-child { background: var(--pe-success); }
.proposal-save-state.is-dirty > span:first-child,
.proposal-save-state.is-saving > span:first-child { background: #d88c0b; }
.proposal-save-state.is-conflict > span:first-child,
.proposal-save-state.is-error > span:first-child { background: var(--pe-accent); }
.proposal-save-state button { min-height: 34px; border: 0; padding: 3px 7px; color: #9f1421; background: transparent; font-size: 11px; text-decoration: underline; cursor: pointer; }

.proposal-device-switch {
  grid-column: 1 / -1;
  padding: 3px;
  border-radius: 12px;
  background: #eeebef;
}

.proposal-device-switch button {
  flex: 1 1 50%;
  border: 0;
  background: transparent;
}

.proposal-device-switch button[aria-pressed="true"] {
  color: #fff;
  background: var(--pe-ink);
}

.proposal-toolbar-actions {
  grid-column: 1 / -1;
}

.proposal-toolbar-actions .proposal-button { flex: 1 1 0; padding-inline: 8px; }

.proposal-editor-workspace {
  min-width: 0;
  padding-bottom: calc(70px + env(safe-area-inset-bottom));
}

.proposal-editor-sidebar { display: contents; }

.proposal-editor-panel {
  position: fixed;
  right: 0;
  bottom: calc(66px + env(safe-area-inset-bottom));
  left: 0;
  z-index: 90;
  max-height: min(72dvh, 680px);
  overflow: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--pe-border);
  border-radius: 22px 22px 0 0;
  padding: 16px;
  background: var(--pe-surface);
  box-shadow: 0 -18px 60px rgba(23, 19, 31, 0.26);
  transform: translateY(calc(100% + 90px));
  visibility: hidden;
  transition: transform 180ms ease, visibility 180ms step-end;
}

.proposal-editor[data-active-panel="pages"] [data-editor-panel="pages"],
.proposal-editor[data-active-panel="layers"] [data-editor-panel="layers"],
.proposal-editor[data-active-panel="add"] [data-editor-panel="add"],
.proposal-editor[data-active-panel="assets"] [data-editor-panel="assets"],
.proposal-editor[data-active-panel="properties"] [data-editor-panel="properties"],
.proposal-editor[data-active-panel="ai"] [data-editor-panel="ai"] {
  transform: translateY(0);
  visibility: visible;
  transition: transform 180ms ease, visibility 0ms;
}

.proposal-panel-heading {
  position: sticky;
  top: -16px;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin: -4px -4px 12px;
  padding: 4px;
  background: inherit;
}

.proposal-panel-heading h2 { margin: 0; font-size: 20px; }
.proposal-editor-warning { border-radius: 12px; padding: 10px; color: #795212; background: #fff4d5; font-size: 12px; }
.proposal-editor-warning.is-ok { color: #0b6942; background: #e6f6ed; }
.proposal-page-list,
.proposal-layer-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }

.proposal-page-item,
.proposal-layer-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px;
  align-items: center;
  border: 1px solid var(--pe-border);
  border-radius: 13px;
  padding: 4px;
}

.proposal-page-item.is-selected,
.proposal-layer-item.is-selected { border-color: var(--pe-accent); box-shadow: 0 0 0 1px var(--pe-accent); }
.proposal-page-item.is-hidden,
.proposal-layer-item.is-hidden { opacity: 0.56; }

.proposal-page-select,
.proposal-layer-select {
  appearance: none;
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 9px;
  border: 0;
  border-radius: 10px;
  padding: 7px;
  color: inherit;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.proposal-page-select > span:last-child,
.proposal-layer-select > span:last-child { min-width: 0; overflow-wrap: anywhere; }
.proposal-page-number { display: grid; width: 28px; height: 28px; flex: 0 0 28px; place-items: center; border-radius: 8px; background: #efebf0; font-size: 12px; font-weight: 850; }
.proposal-layer-select strong,
.proposal-layer-select small { display: block; }
.proposal-layer-select small { margin-top: 2px; color: var(--pe-muted); font-size: 10px; }

.proposal-inline-actions { display: flex; flex-wrap: wrap; gap: 4px; }
.proposal-inline-actions button { min-width: 44px; padding: 4px 7px; }
.proposal-panel-actions { margin: 14px -16px -16px; padding: 12px 16px; }
.proposal-panel-actions .proposal-button { flex: 1 1 110px; }
.proposal-panel-empty { border: 1px dashed var(--pe-border); border-radius: 14px; padding: 20px 12px; color: var(--pe-muted); text-align: center; }
.proposal-panel-copy { color: var(--pe-muted); font-size: 12px; line-height: 1.45; }

.proposal-add-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.proposal-add-grid button {
  appearance: none;
  display: grid;
  min-height: 82px;
  place-items: center;
  gap: 4px;
  border: 1px solid var(--pe-border);
  border-radius: 14px;
  color: var(--pe-ink);
  background: #fff;
  cursor: pointer;
}

.proposal-add-grid button span { color: var(--pe-accent); font-size: 22px; }
.proposal-properties-group { min-width: 0; margin: 0 0 14px; border: 1px solid var(--pe-border); border-radius: 14px; padding: 12px; }
.proposal-properties-group legend { padding: 0 5px; color: #554e5a; font-size: 12px; font-weight: 850; }
.proposal-properties-group .proposal-field + .proposal-field { margin-top: 10px; }
.proposal-frame-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.proposal-frame-grid .proposal-field + .proposal-field { margin-top: 0; }
.proposal-nudge-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 5px; margin-top: 10px; }
.proposal-nudge-grid button { min-width: 0; min-height: 44px; border: 1px solid var(--pe-border); border-radius: 10px; background: #fff; cursor: pointer; }

.proposal-asset-form { display: grid; gap: 10px; }
.proposal-segment { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.proposal-upload-zone { display: grid; min-height: 92px; place-items: center; gap: 8px; margin-top: 12px; border: 2px dashed #bcb5c1; border-radius: 14px; padding: 13px; color: var(--pe-muted); text-align: center; cursor: pointer; }
.proposal-upload-zone input { width: 100%; }
.proposal-asset-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 12px; }
.proposal-asset-grid button { aspect-ratio: 1; overflow: hidden; border: 1px solid var(--pe-border); border-radius: 12px; padding: 0; background: #f4f1f4; cursor: pointer; }
.proposal-asset-grid img { display: block; width: 100%; height: 100%; object-fit: cover; }
.proposal-ai-actions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.proposal-ai-result { margin-top: 12px; border-radius: 14px; padding: 12px; color: #534c59; background: var(--pe-soft); font-size: 13px; }

.proposal-editor-stage {
  min-width: 0;
  overflow: auto;
  padding: 16px 10px 24px;
  background:
    radial-gradient(circle at 1px 1px, rgba(23, 19, 31, 0.12) 1px, transparent 1px) 0 0 / 20px 20px,
    var(--pe-canvas);
}

.proposal-artboard-viewport {
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 360px;
  place-items: start center;
}

.proposal-artboard-frame {
  position: relative;
  width: 100%;
  max-width: 390px;
  overflow: hidden;
  border-radius: 4px;
  background: var(--pe-soft);
  box-shadow: 0 18px 55px rgba(23, 19, 31, 0.2);
  isolation: isolate;
}

.proposal-artboard-frame.is-mobile { aspect-ratio: 390 / 844; }
.proposal-artboard-frame.is-desktop { max-width: 1100px; aspect-ratio: 1366 / 768; }
.proposal-artboard-frame > [data-proposal-artboard],
.proposal-editor .proposal-renderer,
.proposal-editor .proposal-viewport,
.proposal-editor .proposal-artboard { width: 100%; height: 100%; min-height: 0; max-width: none; max-height: none; }
.proposal-editor .proposal-renderer { overflow: hidden; background: transparent; }
.proposal-editor .proposal-artboard { box-shadow: none; }
.proposal-editor .proposal-navigation { display: none; }
.proposal-editor .proposal-element[data-editable="true"] { cursor: pointer; }
.proposal-editor .proposal-element[data-selected="true"] { outline: 1px solid rgba(39, 110, 241, 0.45); outline-offset: -1px; }

.proposal-selection-overlay {
  position: absolute;
  z-index: 30;
  border: 2px solid var(--pe-focus);
  background: rgba(39, 110, 241, 0.04);
  box-shadow: 0 0 0 1px #fff;
  cursor: grab;
  touch-action: none;
}

.proposal-selection-overlay:active { cursor: grabbing; }
.proposal-selection-overlay[data-locked="true"] { border-style: dashed; cursor: not-allowed; }
.proposal-resize-handle {
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 44px;
  height: 44px;
  min-height: 44px;
  border: 0;
  border-radius: 50%;
  padding: 0;
  background: radial-gradient(circle, var(--pe-focus) 0 6px, #fff 7px 9px, transparent 10px);
  cursor: nwse-resize;
  touch-action: none;
}

.proposal-sheet-backdrop {
  position: fixed;
  inset: 0 0 calc(66px + env(safe-area-inset-bottom));
  z-index: 80;
  display: none;
  width: 100%;
  height: auto;
  border: 0;
  border-radius: 0;
  background: rgba(23, 19, 31, 0.45);
}

.proposal-editor:not([data-active-panel=""]) .proposal-sheet-backdrop { display: block; }

.proposal-editor-mobile-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 4px max(2px, env(safe-area-inset-right)) calc(4px + env(safe-area-inset-bottom)) max(2px, env(safe-area-inset-left));
  border-top: 1px solid var(--pe-border);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 -8px 28px rgba(23, 19, 31, 0.12);
  backdrop-filter: blur(14px);
}

.proposal-editor-mobile-nav button {
  appearance: none;
  display: grid;
  min-width: 0;
  min-height: 56px;
  place-items: center;
  align-content: center;
  gap: 2px;
  border: 0;
  border-radius: 10px;
  padding: 3px 1px;
  color: #5d5663;
  background: transparent;
  font-size: clamp(8px, 2.65vw, 11px);
  font-weight: 750;
  cursor: pointer;
}

.proposal-editor-mobile-nav button span { font-size: 18px; }
.proposal-editor-mobile-nav button[aria-expanded="true"] { color: var(--pe-accent); background: #fff0f1; }

@media (min-width: 560px) {
  .proposal-library-header { flex-direction: row; align-items: center; justify-content: space-between; }
  .proposal-template-origin { grid-template-columns: auto minmax(0, 1fr) auto; }
  .proposal-template-origin > .proposal-button { grid-column: auto; width: auto; }
  .proposal-library-filters { grid-template-columns: minmax(220px, 2fr) minmax(150px, 1fr) minmax(150px, 1fr); }
  .proposal-library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proposal-form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proposal-field--wide { grid-column: 1 / -1; }
  .proposal-ai-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .proposal-library-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  .proposal-editor {
    height: max(720px, 100dvh);
    min-height: 720px;
    overflow: hidden;
  }

  .proposal-editor-toolbar {
    position: relative;
    grid-template-columns: minmax(190px, 1fr) auto auto auto minmax(270px, auto);
    min-height: 68px;
    padding: 10px 14px;
  }

  .proposal-save-state,
  .proposal-device-switch,
  .proposal-toolbar-actions { grid-column: auto; }
  .proposal-save-state { min-width: 110px; }
  .proposal-device-switch { width: 190px; }
  .proposal-toolbar-actions .proposal-button { flex: 0 1 auto; }

  .proposal-editor-workspace {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr) 320px;
    height: calc(100% - 68px);
    min-height: 0;
    padding-bottom: 0;
  }

  .proposal-editor-sidebar {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 10px;
    overflow: auto;
    overscroll-behavior: contain;
    padding: 10px;
    background: #f8f7f9;
  }

  .proposal-editor-sidebar--left { border-right: 1px solid var(--pe-border); }
  .proposal-editor-sidebar--right { border-left: 1px solid var(--pe-border); }

  .proposal-editor-panel,
  .proposal-editor[data-active-panel="pages"] [data-editor-panel="pages"],
  .proposal-editor[data-active-panel="layers"] [data-editor-panel="layers"],
  .proposal-editor[data-active-panel="add"] [data-editor-panel="add"],
  .proposal-editor[data-active-panel="assets"] [data-editor-panel="assets"],
  .proposal-editor[data-active-panel="properties"] [data-editor-panel="properties"],
  .proposal-editor[data-active-panel="ai"] [data-editor-panel="ai"] {
    position: static;
    flex: 0 0 auto;
    max-height: none;
    overflow: visible;
    border-radius: 16px;
    padding: 12px;
    box-shadow: none;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .proposal-editor-sidebar--right .proposal-editor-panel:first-child { flex: 1 0 auto; }
  .proposal-panel-heading { position: static; margin: 0 0 10px; padding: 0; }
  .proposal-panel-heading .proposal-icon-button { display: none; }
  .proposal-panel-actions { margin-inline: -12px; margin-bottom: -12px; padding-inline: 12px; }
  .proposal-add-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .proposal-add-grid button { min-height: 70px; font-size: 11px; }
  .proposal-editor-stage { height: 100%; padding: 20px; }
  .proposal-artboard-viewport { min-height: 100%; place-items: center; }
  .proposal-artboard-frame.is-mobile { width: min(390px, 48vh); }
  .proposal-artboard-frame.is-desktop { width: min(100%, 1100px); }
  .proposal-sheet-backdrop,
  .proposal-editor:not([data-active-panel=""]) .proposal-sheet-backdrop,
  .proposal-editor-mobile-nav { display: none; }
}

@media (min-width: 1320px) {
  .proposal-editor-workspace { grid-template-columns: 300px minmax(0, 1fr) 340px; }
}

@media (prefers-reduced-motion: reduce) {
  .proposal-editor-panel,
  .proposal-spinner { transition: none; animation-duration: 1ms; }
}