#topbar-host {
  position: relative;
  z-index: 40;
}

.app-topbar {
  height: var(--cs-topbar);
  padding: 0 18px;
  display: grid;
  grid-template-columns: minmax(190px, 250px) minmax(180px, 1fr) auto minmax(250px, 1fr);
  align-items: center;
  gap: 12px;
  color: var(--md-on-surface);
  background: var(--md-surface-container-lowest);
  border-bottom: 1px solid var(--md-outline-variant);
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--md-primary);
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--md-radius-md);
}

.brand span {
  min-width: 0;
  display: grid;
  line-height: 1.2;
}

.brand strong {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand small {
  color: var(--md-on-surface-variant);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.topbar-project-area {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.project-menu-button {
  min-width: 0;
  max-width: 360px;
  height: 40px;
  padding: 0 12px 0 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--md-on-surface);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-full);
  background: var(--md-surface-container-lowest);
  transition: border-color var(--md-transition), background var(--md-transition);
}

.project-menu-button:hover {
  border-color: var(--md-outline);
  background: var(--md-surface-container-low);
}

.topbar-project-title {
  max-width: 300px;
  overflow: hidden;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.save-status {
  color: var(--md-on-surface-variant);
  font-size: 10px;
  font-weight: 500;
  white-space: nowrap;
}

.topbar-center-tools,
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.topbar-center-tools {
  justify-content: center;
  padding: 3px;
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-radius-full);
  background: var(--md-surface-container-lowest);
}

.topbar-actions {
  justify-content: flex-end;
}

.segmented-control {
  display: flex;
  align-items: center;
  padding: 3px;
  border-radius: var(--md-radius-full);
  background: var(--md-surface-container-high);
}

.segmented-button {
  height: 32px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--md-on-surface-variant);
  border: 0;
  border-radius: var(--md-radius-full);
  background: transparent;
  font-size: 11px;
  font-weight: 600;
  transition: background var(--md-transition), color var(--md-transition);
}

.segmented-button .material-symbols-rounded {
  font-size: 17px;
}

.segmented-button.is-active {
  color: var(--md-on-primary-container);
  background: var(--md-primary-container);
}

.run-button {
  min-width: 112px;
  color: #ffffff;
  border: 1px solid #157a4e;
  background: #157a4e;
}

.run-button:hover {
  filter: brightness(1.06);
}

.run-button.is-running {
  color: var(--md-on-error);
  border-color: var(--md-error);
  background: var(--md-error);
}

.workspace-shell {
  min-height: 0;
  display: grid;
  grid-template-columns: var(--cs-library-width) minmax(360px, 1fr) var(--cs-right-width);
  gap: 0;
  background: var(--md-outline-variant);
}

.panel-surface {
  min-width: 0;
  min-height: 0;
  background: var(--md-surface-container-lowest);
}

.library-pane,
.right-pane {
  overflow: hidden;
}

.library-pane {
  border-right: 1px solid var(--md-outline-variant);
}

.stage-pane {
  min-width: 0;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: var(--md-background);
}

.right-pane {
  display: grid;
  grid-template-rows: 56px minmax(0, 1fr);
  border-left: 1px solid var(--md-outline-variant);
}

.right-tabs {
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  border-bottom: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-lowest);
}

.right-tab {
  min-width: 0;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--md-on-surface-variant);
  border: 0;
  border-radius: var(--md-radius-full);
  background: transparent;
  font-size: 10px;
  font-weight: 600;
  transition: background var(--md-transition), color var(--md-transition);
}

.right-tab .material-symbols-rounded {
  font-size: 18px;
}

.right-tab:hover {
  background: var(--md-surface-variant);
}

.right-tab.is-active {
  color: var(--md-on-secondary-container);
  background: var(--md-secondary-container);
}

.right-panel-content {
  min-height: 0;
  overflow: auto;
}

.mobile-bottom-nav,
.mobile-panel-backdrop {
  display: none;
}

@media (max-width: 1260px) {
  :root {
    --cs-library-width: 270px;
    --cs-right-width: 350px;
  }

  .app-topbar {
    grid-template-columns: 205px minmax(150px, 1fr) auto minmax(210px, 1fr);
  }

  .save-status {
    display: none;
  }
}

@media (max-width: 1040px) and (min-width: 801px) {
  :root {
    --cs-library-width: 244px;
    --cs-right-width: 318px;
  }

  .brand small,
  .view-switch .segmented-button span,
  .topbar-actions .icon-button:nth-child(1) {
    display: none;
  }

  .app-topbar {
    grid-template-columns: 172px minmax(130px, 1fr) auto minmax(170px, 1fr);
    padding-inline: 12px;
  }
}