@media (max-width: 800px) {
  :root {
    --cs-topbar: 60px;
    --cs-mobile-nav: 72px;
  }

  html,
  body {
    overscroll-behavior: none;
  }

  .app-root {
    grid-template-rows: var(--cs-topbar) minmax(0, 1fr) var(--cs-mobile-nav);
  }

  .app-topbar {
    height: var(--cs-topbar);
    padding: 0 10px;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
    background: var(--md-surface-container-lowest);
  }

  .brand {
    gap: 8px;
  }

  .brand img {
    width: 36px;
    height: 36px;
    border-radius: var(--md-radius-md);
  }

  .brand strong {
    font-size: 14px;
  }

  .brand small {
    font-size: 7px;
  }

  .topbar-project-area,
  .topbar-center-tools,
  .topbar-actions .icon-button:not(.theme-button),
  .topbar-actions .run-button span:not(.material-symbols-rounded) {
    display: none;
  }

  .topbar-actions {
    grid-column: 2;
    gap: 3px;
  }

  .topbar-actions .theme-button {
    display: inline-grid;
  }

  .topbar-actions .run-button {
    min-width: 46px;
    width: 46px;
    min-height: 40px;
    padding: 0;
  }

  .topbar-actions .run-button .material-symbols-rounded {
    font-size: 23px;
  }

  .workspace-shell {
    min-height: 0;
    display: block;
    position: relative;
    background: var(--md-background);
  }

  .stage-pane {
    width: 100%;
    height: 100%;
  }

  .library-pane,
  .right-pane {
    width: min(100%, 520px);
    height: calc(100% - 8px);
    position: absolute;
    z-index: 31;
    left: 50%;
    bottom: 0;
    overflow: hidden;
    border: 1px solid var(--md-outline-variant);
    border-bottom: 0;
    border-radius: var(--md-radius-xl) var(--md-radius-xl) 0 0;
    background: var(--md-surface-container-lowest);
    transform: translate(-50%, calc(100% + 12px));
    transition: transform 180ms var(--cs-ease);
  }

  .library-pane::before,
  .right-pane::before {
    content: "";
    width: 34px;
    height: 4px;
    position: absolute;
    z-index: 3;
    top: 8px;
    left: 50%;
    border-radius: var(--md-radius-full);
    background: var(--md-outline-variant);
    transform: translateX(-50%);
  }

  .library-pane {
    padding-top: 11px;
  }

  .right-pane {
    padding-top: 11px;
    grid-template-rows: 54px minmax(0, 1fr);
  }

  .app-root[data-mobile-panel="parts"] .library-pane,
  .app-root[data-mobile-panel="inspect"] .right-pane,
  .app-root[data-mobile-panel="code"] .right-pane,
  .app-root[data-mobile-panel="console"] .right-pane,
  .app-root[data-mobile-panel="coach"] .right-pane {
    transform: translate(-50%, 0);
  }

  .app-root[data-mobile-panel="parts"] .mobile-panel-backdrop,
  .app-root[data-mobile-panel="inspect"] .mobile-panel-backdrop,
  .app-root[data-mobile-panel="code"] .mobile-panel-backdrop,
  .app-root[data-mobile-panel="console"] .mobile-panel-backdrop,
  .app-root[data-mobile-panel="coach"] .mobile-panel-backdrop {
    display: block;
  }

  .mobile-panel-backdrop {
    position: fixed;
    z-index: 30;
    inset: var(--cs-topbar) 0 var(--cs-mobile-nav);
    width: auto;
    height: auto;
    padding: 0;
    border: 0;
    background: rgba(11, 28, 48, 0.38);
  }

  .mobile-bottom-nav {
    height: var(--cs-mobile-nav);
    padding: 6px max(8px, env(safe-area-inset-right)) max(6px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
    position: relative;
    z-index: 41;
    border-top: 1px solid var(--md-outline-variant);
    background: var(--md-surface-container-lowest);
  }

  .mobile-nav-item {
    min-width: 0;
    padding: 4px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 2px;
    color: var(--md-on-surface-variant);
    border: 0;
    border-radius: var(--md-radius-lg);
    background: transparent;
    font-size: 8px;
    font-weight: 600;
  }

  .mobile-nav-item .material-symbols-rounded {
    font-size: 22px;
  }

  .mobile-nav-item.is-active {
    color: var(--md-on-secondary-container);
    background: var(--md-secondary-container);
  }

  .stage-floating-tools {
    top: 10px;
    right: 9px;
    grid-template-columns: repeat(3, 36px);
  }

  .stage-status {
    left: 9px;
    bottom: 9px;
    min-height: 32px;
    padding-inline: 10px;
    font-size: 9px;
  }

  .component-library {
    padding: 15px 12px 10px;
    gap: 10px;
    grid-template-rows: auto auto auto minmax(0, 1fr);
  }

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

  .component-card {
    min-height: 128px;
    padding: 10px;
    grid-template-columns: 1fr;
    grid-template-rows: 76px auto;
    align-content: start;
    gap: 8px;
    border-color: var(--md-outline-variant);
    background: var(--md-surface-container-lowest);
  }

  .component-card-visual {
    width: 100%;
    height: 76px;
  }

  .component-card-copy {
    gap: 2px;
  }

  .component-card-copy strong {
    font-size: 10px;
  }

  .component-card-copy small {
    font-size: 8px;
    -webkit-line-clamp: 1;
  }

  .component-add-icon,
  .library-tip {
    display: none;
  }

  .right-tabs {
    padding: 6px 8px;
  }

  .right-tab {
    font-size: 8px;
  }

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

  .inspector-panel {
    padding: 14px;
  }

  .project-stats {
    gap: 8px;
  }

  .code-panel {
    grid-template-rows: 48px minmax(0, 1fr);
  }

  .block-palette-grid,
  .program-block-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-dialog,
  .welcome-dialog {
    width: calc(100vw - 18px);
    max-width: none;
    max-height: calc(100dvh - 18px);
    border-radius: var(--md-radius-xl);
  }

  .project-dialog {
    height: calc(100dvh - 18px);
  }

  .project-dialog-actions,
  .project-dialog-content {
    padding-inline: 14px;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-card {
    grid-template-columns: 52px minmax(0, 1fr) auto;
    grid-template-rows: auto;
  }

  .welcome-brand {
    min-height: 0;
    padding: 20px;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 14px;
  }

  .welcome-brand img {
    width: 58px;
    height: 58px;
    border-radius: var(--md-radius-md);
  }

  .welcome-brand h1 {
    font-size: 21px;
  }

  .welcome-brand p {
    font-size: 9px;
  }

  .welcome-grid {
    padding: 14px;
    grid-template-columns: repeat(2, 1fr);
  }

  .welcome-actions {
    padding: 5px 14px 15px;
  }
}

@media (max-width: 470px) {
  .brand small {
    display: none;
  }

  .library-pane,
  .right-pane {
    width: 100%;
    height: calc(100% - 4px);
    border-inline: 0;
  }

  .component-list {
    grid-template-columns: 1fr 1fr;
  }

  .component-card {
    min-height: 120px;
    grid-template-rows: 68px auto;
  }

  .component-card-visual {
    height: 68px;
  }

  .code-editor-shell {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .code-lines,
  .code-editor {
    font-size: 10px;
  }

  .project-dialog-actions,
  .welcome-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .project-dialog-actions button,
  .welcome-actions button {
    min-width: 0;
    padding-inline: 8px;
    font-size: 10px;
  }

  .project-card {
    min-height: 86px;
    grid-template-columns: 46px minmax(0, 1fr);
  }

  .project-preview {
    width: 46px;
    height: 46px;
  }

  .project-card .tonal-button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 800px) {
  .topbar-actions .run-button {
    font-size: 0;
  }

  .topbar-actions .run-button .material-symbols-rounded {
    font-size: 23px;
  }
}