:root {
  --cs-left-width: 310px;
  --cs-right-width: 390px;
  --cs-left-effective: var(--cs-left-width);
  --cs-right-effective: var(--cs-right-width);
  --cs-resizer: 6px;
  --cs-readable-xs: 11px;
  --cs-readable-sm: 12px;
  --cs-readable-md: 13px;
}

.app-root:fullscreen {
  width: 100vw;
  height: 100vh;
  background: var(--md-background);
}

.workspace-shell {
  grid-template-columns: var(--cs-left-effective) var(--cs-resizer) minmax(300px, 1fr) var(--cs-resizer) var(--cs-right-effective);
  gap: 0;
  transition: grid-template-columns 180ms var(--cs-ease);
}

.library-pane,
.right-pane {
  position: relative;
  z-index: 2;
  opacity: 1;
  transition: opacity 130ms ease, visibility 130ms ease;
}

.library-pane {
  border-right: 0;
}

.left-panel-content {
  height: 100%;
  min-height: 0;
}

.right-pane {
  grid-template-rows: 58px minmax(0, 1fr);
  border-left: 0;
}

.app-root.left-collapsed .workspace-shell {
  grid-template-columns: 0 0 minmax(300px, 1fr) var(--cs-resizer) var(--cs-right-effective);
}

.app-root.right-collapsed .workspace-shell {
  grid-template-columns: var(--cs-left-effective) var(--cs-resizer) minmax(300px, 1fr) 0 0;
}

.app-root.left-collapsed.right-collapsed .workspace-shell {
  grid-template-columns: 0 0 minmax(300px, 1fr) 0 0;
}

.app-root.left-collapsed .library-pane,
.app-root.right-collapsed .right-pane {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.panel-resizer {
  position: relative;
  z-index: 12;
  min-width: 0;
  cursor: col-resize;
  touch-action: none;
  background: var(--md-outline-variant);
}

.panel-resizer::after {
  content: "";
  width: 2px;
  position: absolute;
  inset: 0 auto 0 50%;
  border-radius: 2px;
  background: transparent;
  transform: translateX(-50%);
}

.panel-resizer:hover::after,
.panel-resizer:focus-visible::after,
body.is-resizing-panel .panel-resizer::after {
  background: var(--md-primary);
}

.app-root.left-collapsed .panel-resizer-left,
.app-root.right-collapsed .panel-resizer-right {
  visibility: hidden;
}

body.is-resizing-panel,
body.is-resizing-panel * {
  cursor: col-resize !important;
  user-select: none !important;
}

.stage-pane {
  position: relative;
  z-index: 3;
  overflow: visible;
}

.panel-edge-toggle {
  width: 28px;
  height: 58px;
  padding: 0;
  position: absolute;
  z-index: 24;
  top: 50%;
  display: grid;
  place-items: center;
  color: var(--md-on-surface-variant);
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-lowest);
  box-shadow: 0 5px 18px rgba(10, 24, 44, .12);
  transform: translateY(-50%);
}

.panel-edge-toggle:hover {
  color: var(--md-primary);
  background: var(--md-primary-container);
}

.panel-edge-toggle-left {
  left: -1px;
  border-left: 0;
  border-radius: 0 16px 16px 0;
}

.panel-edge-toggle-right {
  right: -1px;
  border-right: 0;
  border-radius: 16px 0 0 16px;
}

.app-root:not(.left-collapsed) .panel-edge-toggle-left { left: -28px; }
.app-root:not(.right-collapsed) .panel-edge-toggle-right { right: -28px; }

.right-tabs {
  min-height: 58px;
  padding: 7px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.right-tab {
  min-width: 0;
  font-size: var(--cs-readable-xs);
}

.right-tab .material-symbols-rounded { font-size: 19px; }

.selection-ai-actions {
  position: absolute;
  z-index: 18;
  left: 50%;
  bottom: 18px;
  padding: 6px;
  display: flex;
  gap: 6px;
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-full);
  background: color-mix(in srgb, var(--md-surface-container-lowest) 94%, transparent);
  box-shadow: 0 10px 30px rgba(10, 24, 44, .16);
  backdrop-filter: blur(14px);
  transform: translateX(-50%);
}

.selection-ai-actions[hidden] { display: none; }
.selection-ai-actions button { min-height: 38px; white-space: nowrap; }

.app-topbar {
  padding-inline: 14px;
  grid-template-columns: minmax(180px, 230px) minmax(150px, 1fr) auto auto;
  gap: 10px;
}

.brand strong { font-size: 16px; }
.brand small { font-size: 10px; }
.topbar-project-title { font-size: 13px; }
.topbar-actions { flex-wrap: nowrap; }
.topbar-actions .icon-button,
.topbar-center-tools .tool-button { flex: 0 0 auto; }
.segmented-button { min-height: 34px; font-size: 12px; }
.run-button { min-width: 108px; }

.component-library {
  padding: 14px;
  gap: 12px;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
}

.library-header h2 { font-size: 17px; }
.library-header p,
.library-tip,
.library-count { font-size: 11px; line-height: 1.45; }
.library-search { min-height: 44px; }
.library-search-input { font-size: 13px; }
.filter-chip { min-height: 34px; padding-inline: 12px; font-size: 11px; }

.component-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-right: 3px;
}

.component-card {
  position: relative;
  min-height: 150px;
  padding: 10px;
  grid-template-columns: 1fr;
  grid-template-rows: 90px auto;
  align-content: start;
  gap: 8px;
  border-color: var(--md-outline-variant);
  border-radius: 13px;
  background: var(--md-surface-container-lowest);
}

.component-card:hover {
  border-color: var(--md-primary);
  background: var(--md-primary-container);
}

.component-card-visual {
  width: 100%;
  height: 90px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--md-surface-container) 76%, white);
}

.component-card-copy strong { font-size: 12px; line-height: 1.25; }
.component-card-copy small { font-size: 10px; line-height: 1.35; -webkit-line-clamp: 2; }
.component-add-icon {
  width: 27px;
  height: 27px;
  position: absolute;
  top: 8px;
  right: 8px;
  display: grid;
  place-items: center;
  color: var(--md-on-primary);
  border-radius: 50%;
  background: var(--md-primary);
}

.inspector-panel,
.code-panel,
.console-panel,
.ai-assistant { font-size: var(--cs-readable-sm); }

.inspector-section-title,
.field-label,
.code-tab,
.console-entry pre,
.code-editor,
.code-lines,
.api-entry code,
.api-entry p { font-size: var(--cs-readable-xs); }

.inspector-agent-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.inspector-agent-actions button { min-height: 42px; }

.pin-label {
  paint-order: stroke fill;
  stroke: color-mix(in srgb, var(--md-surface-container-lowest) 94%, white);
  stroke-width: 2.2px;
  stroke-linejoin: round;
}

.pin-label-board {
  opacity: .96;
  letter-spacing: .02em;
}

.stage-status,
.scene-selection-label,
.scene-pin-label { font-size: 12px; }
.stage-floating-tools { gap: 4px; padding: 5px; }
.stage-tool { width: 40px; height: 40px; }

.ai-assistant {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  overflow: hidden;
}

.ai-header {
  min-height: 74px;
  padding: 10px 12px;
  align-items: flex-start;
  border-bottom: 1px solid var(--md-outline-variant);
}

.ai-heading {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
}

.ai-brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--md-on-secondary-container);
  border-radius: 12px;
  background: var(--md-secondary-container);
}

.ai-heading strong { display: block; font-size: 13px; }
.ai-heading small { display: block; margin-top: 2px; color: var(--md-on-surface-variant); font-size: 9px; line-height: 1.3; }
.ai-header-actions { display: flex; align-items: center; gap: 5px; }
.ai-mode-select {
  width: 150px;
  min-height: 34px;
  padding: 0 28px 0 9px;
  font-size: 10px;
}

.ai-status {
  min-height: 34px;
  padding: 7px 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--md-primary);
  border-bottom: 1px solid var(--md-outline-variant);
  background: var(--md-primary-container);
  font-size: 10px;
  font-weight: 600;
}

.ai-status[hidden] { display: none; }
.ai-status .material-symbols-rounded { animation: cs-spin 1s linear infinite; }
@keyframes cs-spin { to { transform: rotate(360deg); } }

.ai-messages {
  min-height: 0;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  overflow: auto;
  background: var(--md-surface-container-low);
}

.ai-message {
  width: min(100%, 520px);
  max-width: 96%;
  padding: 11px;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 9px;
  align-self: flex-start;
  border: 1px solid var(--md-outline-variant);
  border-radius: 16px 16px 16px 5px;
  background: var(--md-surface-container-lowest);
  font-size: 11px;
  line-height: 1.55;
}

.ai-message.ai-user {
  grid-template-columns: minmax(0, 1fr) 30px;
  align-self: flex-end;
  color: var(--md-on-primary-container);
  border-color: transparent;
  border-radius: 16px 16px 5px 16px;
  background: var(--md-primary-container);
}

.ai-message.ai-user .ai-avatar { grid-column: 2; grid-row: 1; }
.ai-message.ai-user .ai-message-body { grid-column: 1; grid-row: 1; }
.ai-avatar {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--md-secondary-container);
}
.ai-avatar .material-symbols-rounded { font-size: 17px; }
.ai-message-body { min-width: 0; white-space: pre-wrap; }
.ai-message-body p { margin: 0; overflow-wrap: anywhere; }
.ai-message-body button { margin-top: 9px; }

.ai-tool-activity {
  width: calc(100% - 30px);
  margin-left: 30px;
  padding: 8px 10px;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  color: var(--md-on-surface-variant);
  border-left: 2px solid var(--md-outline-variant);
  background: color-mix(in srgb, var(--md-surface-container-lowest) 72%, transparent);
}
.ai-tool-activity strong { display: block; color: var(--md-on-surface); font-size: 10px; text-transform: capitalize; }
.ai-tool-activity small { display: block; margin-top: 1px; font-size: 9px; line-height: 1.35; }
.ai-tool-activity.is-running > svg { animation: cs-spin 1s linear infinite; }
.ai-tool-activity.is-done { border-color: #168354; }
.ai-tool-activity.is-done > svg { color: #168354; }
.ai-tool-activity.is-error { border-color: var(--md-error); }
.ai-tool-activity.is-error > svg { color: var(--md-error); }

.ai-suggestions {
  padding: 8px 10px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  border-top: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-lowest);
}
.ai-suggestions button {
  min-height: 32px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex: 0 0 auto;
  color: var(--md-on-surface-variant);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-full);
  background: transparent;
  font-size: 9px;
  font-weight: 600;
}
.ai-suggestions button:hover { color: var(--md-primary); border-color: var(--md-primary); }
.ai-suggestions svg { width: 16px; height: 16px; }

.ai-composer {
  padding: 10px;
  display: grid;
  gap: 7px;
  border-top: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-lowest);
}
.ai-input { min-height: 78px; max-height: 190px; resize: vertical; font-size: 11px; line-height: 1.5; }
.ai-composer-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ai-composer-row small { color: var(--md-on-surface-variant); font-size: 9px; }
.ai-composer-actions { display: flex; gap: 7px; }
.ai-send,
.ai-stop { min-width: 104px; }

.export-dialog {
  width: min(1120px, calc(100vw - 28px));
  height: min(820px, calc(100vh - 28px));
  overflow: hidden;
}

.export-header {
  min-height: 78px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--md-outline-variant);
}
.export-header > div { display: flex; align-items: center; gap: 12px; }
.export-header-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--md-on-primary-container);
  border-radius: 13px;
  background: var(--md-primary-container);
}
.export-header h2 { font-size: 18px; }
.export-header p { margin-top: 2px; color: var(--md-on-surface-variant); font-size: 10px; }
.export-content {
  height: calc(100% - 78px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  background: var(--md-surface-container-low);
}
.export-preview-section { min-width: 0; min-height: 0; padding: 16px; display: grid; grid-template-rows: auto minmax(0, 1fr); gap: 10px; }
.export-preview-label { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 11px; }
.export-preview-label span { color: var(--md-on-surface-variant); font-size: 9px; }
.sketch-preview {
  min-height: 0;
  padding: 14px;
  display: grid;
  place-items: center;
  overflow: auto;
  border: 1px solid var(--md-outline-variant);
  border-radius: 16px;
  background: #bfc4cc;
}
.sketch-preview svg { width: auto; height: min(100%, 690px); max-width: 100%; aspect-ratio: 210 / 297; background: white; box-shadow: 0 12px 38px rgba(12, 24, 40, .2); }
.export-sidebar { min-height: 0; padding: 16px; overflow: auto; border-left: 1px solid var(--md-outline-variant); background: var(--md-surface-container-lowest); }
.export-sidebar h3 { margin: 18px 0 9px; font-size: 12px; }
.export-brand-fields { display: grid; gap: 10px; }
.export-brand-fields label { display: grid; gap: 5px; color: var(--md-on-surface-variant); font-size: 9px; font-weight: 600; }
.export-brand-fields input { font-size: 11px; }
.export-options { display: grid; gap: 7px; }
.export-option {
  min-height: 64px;
  padding: 9px 10px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 9px;
  color: var(--md-on-surface);
  text-align: left;
  border: 1px solid var(--md-outline-variant);
  border-radius: 13px;
  background: var(--md-surface-container-low);
}
.export-option:hover { border-color: var(--md-primary); background: var(--md-primary-container); }
.export-option-icon { width: 38px; height: 38px; display: grid; place-items: center; color: var(--md-primary); border-radius: 10px; background: var(--md-surface-container-lowest); }
.export-option strong { display: block; font-size: 11px; }
.export-option small { display: block; margin-top: 2px; color: var(--md-on-surface-variant); font-size: 8.5px; }

@media (max-width: 1240px) and (min-width: 801px) {
  .app-root { --cs-left-effective: min(var(--cs-left-width), 280px); --cs-right-effective: min(var(--cs-right-width), 350px); }
  .app-topbar { grid-template-columns: 180px minmax(130px, 1fr) auto auto; }
  .brand small,
  .save-status { display: none; }
  .topbar-actions { gap: 1px; }
  .run-button { min-width: 92px; }
}

@media (max-width: 1040px) and (min-width: 801px) {
  .app-root { --cs-left-effective: min(var(--cs-left-width), 210px); --cs-right-effective: min(var(--cs-right-width), 270px); }
  .topbar-actions .icon-button:nth-child(1),
  .topbar-actions .icon-button:nth-child(2),
  .topbar-actions .icon-button:nth-child(4) { display: none; }
  .view-switch .segmented-button { padding-inline: 9px; }
  .component-list { grid-template-columns: 1fr; }
  .component-card { min-height: 92px; grid-template-columns: 92px minmax(0, 1fr); grid-template-rows: 1fr; }
  .component-card-visual { height: 72px; }
}

@media (max-width: 800px) {
  .workspace-shell,
  .app-root.left-collapsed .workspace-shell,
  .app-root.right-collapsed .workspace-shell,
  .app-root.left-collapsed.right-collapsed .workspace-shell { display: block; }
  .panel-resizer,
  .panel-edge-toggle,
  .selection-ai-actions { display: none; }
  .library-pane,
  .right-pane,
  .app-root.left-collapsed .library-pane,
  .app-root.right-collapsed .right-pane { visibility: visible; opacity: 1; pointer-events: auto; }
  .app-root[data-mobile-panel="parts"] .library-pane { transform: translate(-50%, 0); }
  .app-root[data-mobile-panel="parts"] .mobile-panel-backdrop { display: block; }
  .right-tabs { grid-template-columns: repeat(4, 1fr); }
  .component-library { padding: 16px 12px 10px; }
  .component-card { min-height: 136px; grid-template-columns: 1fr; grid-template-rows: 78px auto; }
  .component-card-visual { height: 78px; }
  .component-card-copy strong { font-size: 11px; }
  .component-card-copy small { font-size: 9.5px; }
  .topbar-actions .fullscreen-button,
  .topbar-actions .export-button { display: inline-grid !important; }
  .ai-header { min-height: 68px; }
  .ai-mode-select { width: 132px; }
  .export-dialog { width: calc(100vw - 16px); height: calc(100dvh - 16px); }
  .export-content { grid-template-columns: 1fr; grid-template-rows: minmax(260px, 1fr) auto; overflow: auto; }
  .export-preview-section { min-height: 420px; }
  .export-sidebar { border-left: 0; border-top: 1px solid var(--md-outline-variant); }
}

@media (max-width: 470px) {
  .right-tab span { display: none; }
  .right-tab .material-symbols-rounded { font-size: 22px; }
  .component-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .component-card { min-height: 120px; grid-template-rows: 66px auto; }
  .component-card-visual { height: 66px; }
  .ai-header { flex-wrap: wrap; }
  .ai-header-actions { width: 100%; justify-content: space-between; }
  .ai-mode-select { width: calc(100% - 42px); }
  .ai-message { max-width: 100%; }
}