@media (max-width: 640px) {
  .reference-asset {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .reference-asset > label {
    grid-column: 1 / -1;
    grid-row: 2;
  }

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

  .generated-result-heading,
  .generated-result-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .generated-result-actions .button {
    width: 100%;
  }

  .candidate-approval-grid {
    grid-template-columns: 1fr;
  }

  .approval-stage-heading,
  .approval-image-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .stage-approval-status {
    width: 100%;
    max-width: none;
    min-width: 0;
    flex-basis: auto;
  }

  .stage-approval-status .role-label {
    align-self: flex-start;
    justify-self: stretch;
  }

  .approval-image-actions .button,
  .approval-row .button {
    width: 100%;
  }

  .stage-upload-control {
    align-items: stretch;
    flex-direction: column;
  }

  .stage-upload-button,
  .stage-upload-file .button {
    width: 100%;
  }

}

.approval-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.approval-row .button {
  min-height: 44px;
  padding: 8px 12px;
}

.generation-model-control {
  display: grid;
  min-width: 0;
  align-self: start;
  align-content: start;
  gap: 4px;
  color: var(--text-secondary);
  font-size: 0.61rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.generation-model-control select {
  min-height: 44px;
  letter-spacing: normal;
  text-transform: none;
}

.folder-part-picker {
  display: grid;
  gap: 4px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
}

.folder-part-picker legend {
  margin-bottom: 0;
  padding: 0 5px;
  color: var(--text-secondary);
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.folder-part-picker label {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  padding: 8px 10px;
  cursor: pointer;
  transition: border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

.folder-part-picker input[type="checkbox"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.folder-part-check {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background-color: var(--surface);
  transition: border-color var(--motion-fast) ease, background-color var(--motion-fast) ease;
}

.folder-part-check svg {
  display: block;
  width: 20px;
  height: 20px;
}

.folder-part-check path {
  stroke: transparent;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.folder-part-picker input[type="checkbox"]:checked + .folder-part-check {
  border-color: var(--user);
  background-color: var(--user);
}

.folder-part-picker input[type="checkbox"]:checked + .folder-part-check path { stroke: #fff; }
.folder-part-picker label:has(input:checked) { border-color: var(--user-border); background: var(--user-soft); }
.folder-part-picker label:hover:not(:has(input:disabled)) { background: var(--surface-soft); }
.folder-part-picker label:has(input:checked):hover { background: var(--user-soft); }

.folder-part-picker label:has(input[type="checkbox"]:focus-visible) .folder-part-check { outline: 2px solid var(--focus); outline-offset: 2px; }
.folder-part-picker label:has(input:disabled) { opacity: 0.5; background: var(--surface); cursor: not-allowed; }
.folder-part-picker strong { display: block; }
.folder-part-picker strong { font-size: 0.72rem; }

@media (max-width: 880px) {
  .generation-controls {
    grid-template-columns: 1fr;
  }

  .generation-prompt-control {
    grid-column: auto;
  }
}

@media (max-width: 680px) {

  .stage-image-large,
  .stage-image-empty {
    min-height: 250px;
  }

  .generation-model-control {
    width: 100%;
  }

}

.composition-summary {
  display: grid;
  gap: 10px;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--border);
  padding: 11px 0;
  font-size: 0.72rem;
}

.summary-row span {
  color: var(--text-secondary);
}

.summary-row strong {
  max-width: 55%;
  overflow: hidden;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toast {
  position: fixed;
  z-index: 100;
  right: 24px;
  bottom: 24px;
  max-width: min(360px, calc(100vw - 32px));
  transform: translateY(24px);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--foreground);
  color: var(--surface);
  padding: 12px 15px;
  box-shadow: var(--shadow-md);
  font-size: 0.72rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.toast.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav {
  display: none;
}

@media (max-width: 1120px) {
  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .sidebar {
    display: none;
  }

  .main {
    margin-left: 0;
    padding-bottom: 72px;
  }

  .mobile-brand-mark {
    display: grid;
  }

  .mobile-nav {
    position: fixed;
    z-index: 50;
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 12px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--border);
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    padding: 5px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(16px);
  }

  .mobile-nav button {
    min-height: 46px;
    border: 0;
    border-radius: 11px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 600;
  }

  .mobile-nav button.is-active {
    background: var(--foreground);
    color: var(--surface);
  }

  .mobile-nav button:disabled {
    opacity: 0.38;
    cursor: not-allowed;
  }

  .workflow-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) and (max-height: 500px) and (orientation: landscape) {
  .main {
    padding-bottom: 24px;
  }

  .mobile-nav {
    position: static;
    right: auto;
    bottom: 0;
    left: auto;
    margin: 0 12px 12px;
  }
}

@media (max-width: 680px) {
  .topbar {
    min-height: 72px;
    padding: 12px 18px;
  }

  .save-state {
    display: none;
  }

  .view {
    padding: 28px 16px 54px;
  }

  .view-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .responsibility-legend {
    justify-content: flex-start;
  }

  .prompt-legend {
    justify-content: flex-start;
  }

  .prompt-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .stepper {
    margin-top: 28px;
  }

  .stepper button {
    min-height: 52px;
    padding: 0 2px;
  }

  .stepper button > span {
    width: 32px;
    height: 32px;
  }

  .stepper button strong,
  .stepper button small {
    display: none;
  }

  .stepper li:not(:last-child)::after {
    top: 15px;
  }

  .form-panel,
  .readiness-panel,
  .cost-panel {
    padding: 20px;
  }

  .form-panel {
    min-height: 0;
  }

  .cost-panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .cost-panel-actions {
    width: 100%;
    justify-content: space-between;
  }

  .cost-total {
    text-align: left;
  }

  .panel-heading {
    margin-bottom: 24px;
  }

  .field-row,
  .choice-grid,
  .choice-grid.two-column,
  .status-column,
  .project-grid,
  .branch-grid,
  .review-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .source-palette-groups {
    grid-template-columns: minmax(0, 1fr);
  }

  .source-palette-group-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .source-palette-heading-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .source-palette-group:not(.is-gradient) .source-palette-swatches {
    grid-template-columns: minmax(0, 1fr);
  }

  .source-palette-group.is-gradient .source-palette-swatches,
  .folder-palette-group.is-gradient .folder-palette-colors {
    grid-template-columns: repeat(var(--gradient-stop-count, 2), minmax(0, 1fr));
  }

  .palette-color-editor.has-position,
  .folder-color-editor.has-position {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 4px;
    padding-right: 5px;
  }

  .palette-color-editor.has-position .gradient-position-control,
  .folder-color-editor.has-position .gradient-position-control {
    grid-column: 1 / -1;
  }

  .palette-color-editor.has-position input[type="color"],
  .folder-color-editor.has-position input[type="color"] {
    width: 28px;
    min-height: 34px;
    height: 34px;
  }

  .palette-color-editor.has-position input[type="text"],
  .folder-color-editor.has-position input[type="text"] {
    padding-inline: 1px;
    font-size: 0.58rem;
  }

  .source-folder-save,
  .brand-library-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .source-folder-save > div:last-child {
    width: 100%;
  }

  .source-folder-save .button {
    flex: 1 1 0;
  }

  .brand-folder-grid,
  .folder-palette-editor,
  .character-folder-grid,
  .existing-character-upload-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .library-heading-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .library-heading-actions .brand-folder-count {
    align-self: flex-start;
  }

  .existing-character-confirmed {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .existing-character-confirmed .button {
    grid-column: 1 / -1;
    width: 100%;
  }

  .brand-folder-count {
    align-self: flex-start;
  }

  .source-logo-extract {
    grid-template-columns: minmax(0, 1fr);
  }

  .source-logo-extract-image {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .source-logo-extract figcaption {
    align-items: flex-start;
    flex-direction: column;
  }

  .choice-card {
    min-height: 72px;
  }

  .banner-preview {
    min-height: 0;
  }

  .field-section-heading,
  .keyword-footer,
  .pose-picker-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .pose-picker-heading {
    grid-template-columns: minmax(0, 1fr);
  }

  .pose-picker-title-block {
    width: 100%;
  }

  .keyword-add,
  .pose-picker-actions,
  .pose-edit-button,
  .pose-add-button {
    width: 100%;
  }

  .pose-picker-actions {
    display: grid;
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .data-notice {
    align-items: flex-start;
    flex-direction: column;
  }

  .prompt-notice,
  .prompt-card-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .workflow-stage {
    grid-template-columns: 1fr;
  }

  .workflow-summary {
    grid-template-columns: minmax(0, 1fr);
  }

  .offline-callout {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .topbar-actions {
    gap: 6px;
  }

  .form-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .form-actions .button {
    width: 100%;
  }

  .form-actions-end {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .source-analysis-actions .button,
  .source-palette-actions .button {
    width: 100%;
  }

  .source-palette-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .brand-folder-source {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .app-dialog-card {
    padding: 20px;
  }

  .app-dialog-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .existing-character-actions {
    display: flex;
  }

  .app-dialog-actions .button {
    width: 100%;
  }

  .pose-composer-heading,
  .pose-composer-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .pose-composer-actions .button {
    width: 100%;
  }

  .pose-picker-actions {
    align-items: stretch;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .pose-delete-confirmation {
    bottom: calc(100% + 8px);
    left: 0;
    width: 100%;
  }

  .preview-meta {
    grid-template-columns: 1fr;
  }

  .text-layer-card {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    column-gap: 8px;
    padding: 10px;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}