/* remix-studio.css — Remix Studio layout and component styles */
/* Consumes base.css tokens exclusively. No standalone color or spacing values. */

/* ─── Layout Shell ─── */

.studio {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}

/* ─── Top Bar ─── */

.studio-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  height: 48px;
}

.studio-bar__left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.studio-bar__logo {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}

.studio-bar__logo:hover {
  color: var(--color-text);
}

.studio-bar__divider {
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}

.studio-bar__title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.studio-bar__back-link {
  margin-left: var(--space-2);
  padding-left: var(--space-2);
  border-left: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
}

.studio-bar__back-link:hover {
  color: var(--color-text);
}

.studio-bar__back-link[hidden] {
  display: none;
}

.studio-bar__right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.studio-bar__session-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.studio-bar__session-name {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ─── Workspace Grid ─── */

.studio-workspace {
  display: grid;
  grid-template-columns: 200px 1fr 240px;
  flex: 1;
  min-height: 0; /* allow flex children to shrink */
  overflow: hidden;
}

/* ─── Left Rail ─── */

.studio-rail {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  background: var(--color-surface);
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-3) transparent;
}

.studio-rail::-webkit-scrollbar {
  width: 4px;
}

.studio-rail::-webkit-scrollbar-thumb {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
}

.studio-rail__section {
  padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.studio-rail__section--locks {
  flex: 0 0 auto;
}

.studio-rail__section--reset {
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: none;
}

.studio-rail__section--generate {
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
  border-bottom: none;
  margin-top: auto;
}

/* ─── Action Buttons ─── */

.studio-rail__action-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.studio-action-btn {
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  text-align: left;
  cursor: pointer;
  transition:
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    background var(--transition-interactive),
    opacity var(--transition-interactive);
  min-height: 44px;
  width: 100%;
}

.studio-action-btn:hover:not(:disabled) {
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.studio-action-btn[aria-pressed="true"],
.studio-action-btn.is-active {
  border-color: var(--color-accent);
  color: var(--color-text);
  background: var(--color-surface-2);
}

.studio-action-btn:disabled,
.studio-action-btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ─── Refine Sub-Options ─── */

.studio-refine-subopts {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-3);
}

.studio-subopt-btn {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-muted);
  background: var(--color-surface-3);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  text-align: left;
  cursor: pointer;
  min-height: 32px;
  transition:
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.studio-subopt-btn:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.studio-subopt-btn[aria-pressed="true"],
.studio-subopt-btn.is-selected {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ─── Preset Picker ─── */

.studio-preset-picker {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-3);
}

.studio-preset-btn {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-muted);
  background: var(--color-surface-3);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  text-align: left;
  cursor: pointer;
  min-height: 32px;
  transition:
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    background var(--transition-interactive);
  word-break: break-word;
}

.studio-preset-btn:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.studio-preset-btn[aria-pressed="true"],
.studio-preset-btn.is-selected {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ─── Lock Toggles ─── */

.studio-locks {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.studio-lock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.studio-lock__label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  user-select: none;
}

.studio-lock[data-locked="true"] .studio-lock__label {
  color: var(--color-text-faint);
}

.studio-lock[data-locked="false"] .studio-lock__label {
  color: var(--color-text);
}

.studio-lock__btn {
  font-size: var(--text-xs);
  line-height: 1;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  min-height: 28px;
  min-width: 32px;
  text-align: center;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive);
}

.studio-lock__btn:hover {
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

/* Shoe lock is visually distinct */
.studio-lock--shoe .studio-lock__label {
  color: var(--color-text-muted);
  font-weight: 500;
}

.studio-lock__btn--fixed {
  cursor: default;
  opacity: 0.7;
}

.studio-lock__btn--fixed:hover {
  background: none;
  border-color: transparent;
  opacity: 1;
}

/* ─── Axis Directions ─── */

.studio-rail__section--axis-directions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.studio-axis-directions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.studio-axis-directions__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.studio-axis-directions__title {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.studio-axis-directions__hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.4;
}

.studio-axis-control {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.studio-axis-control__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.studio-axis-control__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: lowercase;
}

.studio-axis-control__status {
  font-size: 10px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.studio-axis-control[data-editable="true"] .studio-axis-control__status {
  color: var(--color-accent);
}

.studio-axis-control__input {
  width: 100%;
  resize: vertical;
  min-height: 52px;
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  line-height: 1.45;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive),
    color var(--transition-interactive),
    opacity var(--transition-interactive);
}

.studio-axis-control__input::placeholder {
  color: var(--color-text-faint);
}

.studio-axis-control__input:focus-visible {
  outline: none;
  border-color: var(--color-accent);
}

.studio-axis-control__input:disabled {
  color: var(--color-text-faint);
  background: var(--color-surface-3);
  cursor: not-allowed;
  opacity: 0.85;
}

/* ─── Reset Button ─── */

.studio-reset-btn {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-faint);
  background: none;
  border: none;
  padding: var(--space-1) 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-interactive);
  min-height: 28px;
}

.studio-reset-btn:hover {
  color: var(--color-text-muted);
}

/* ─── Generate Button ─── */

.studio-generate-btn {
  width: 100%;
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--color-text-inverse);
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  min-height: 44px;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    opacity var(--transition-interactive);
}

.studio-generate-btn:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.studio-generate-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ─── Hero Viewport ─── */

.studio-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg);
  position: relative;
}

.studio-hero__state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  gap: var(--space-4);
}

/* Hide all states by default; JS shows one at a time */
.studio-hero__state[hidden] {
  display: none;
}

/* State: Picker */
.studio-hero__state--picker {
  padding: var(--space-6);
  gap: var(--space-6);
  overflow-y: auto;
}

.studio-hero__state-heading {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 40ch;
}

.studio-shoe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-3);
  width: 100%;
  max-width: 640px;
}

/* State: Ready */
.studio-hero__state--ready {
  padding: var(--space-6);
}

.studio-hero__shoe-ref {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  min-height: 0;
  width: 100%;
}

.studio-hero__shoe-ref-img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.studio-hero__state-caption {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-align: center;
}

/* State: Loading */
.studio-hero__state--loading {
  gap: var(--space-4);
  padding: var(--space-6);
}

.studio-hero__skeleton {
  width: 100%;
  max-width: 480px;
  flex: 1;
  min-height: 0;
  max-height: 640px;
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  animation: skeleton-pulse var(--transition-slow) ease-in-out infinite alternate;
}

@keyframes skeleton-pulse {
  from { background: var(--color-surface-2); }
  to   { background: var(--color-surface-3); }
}

@media (prefers-reduced-motion: reduce) {
  .studio-hero__skeleton {
    animation: none;
    background: var(--color-surface-2);
  }
}

.studio-hero__loading-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.studio-hero__loading-timer {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.studio-hero__cancel-btn {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-faint);
  background: none;
  border: none;
  padding: var(--space-1) 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-interactive);
  min-height: 28px;
}

.studio-hero__cancel-btn:hover {
  color: var(--color-text-muted);
}

/* State: Display */
.studio-hero__state--display {
  justify-content: flex-end;
  gap: 0;
  padding-bottom: var(--space-4);
}

/* State: Error */
.studio-hero__state--error {
  gap: var(--space-4);
  padding: var(--space-6);
}

.studio-hero__error-msg {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 40ch;
}

.studio-hero__retry-btn {
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-5);
  cursor: pointer;
  min-height: 36px;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive);
}

.studio-hero__retry-btn:hover {
  border-color: var(--color-border-hover);
}

/* ─── Carousel ─── */

.studio-carousel {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-height: 0;
  width: 100%;
  position: relative;
}

.studio-carousel__viewport {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.studio-carousel__img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

/* Carousel arrows: hidden by default, visible on parent hover */
.studio-carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-interactive), border-color var(--transition-interactive);
  z-index: 1;
  min-height: unset;
  padding: 0;
}

.studio-carousel__arrow--prev { left: var(--space-3); }
.studio-carousel__arrow--next { right: var(--space-3); }

.studio-carousel__viewport:hover .studio-carousel__arrow,
.studio-carousel__arrow:focus-visible {
  opacity: 1;
}

.studio-carousel__arrow:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.studio-carousel__indicator {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  padding: var(--space-2) 0;
  text-align: center;
  min-height: 24px;
}

/* ─── Action Bar ─── */

.studio-action-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  flex-shrink: 0;
}

.studio-action-bar__bookmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-text-inverse);
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  min-height: 36px;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    color var(--transition-interactive);
}

.studio-action-bar__bookmark:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.studio-action-bar__bookmark[aria-pressed="true"] svg {
  fill: currentColor;
}

.studio-action-bar__iterate {
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  min-height: 36px;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive);
}

.studio-action-bar__iterate:hover {
  border-color: var(--color-border-hover);
}

.studio-action-bar__flag {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-faint);
  background: none;
  border: none;
  padding: var(--space-1) 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-left: auto;
  min-height: 28px;
  transition: color var(--transition-interactive);
}

.studio-action-bar__flag:hover {
  color: var(--color-text-muted);
}

/* ─── Flag Reason Strip ─── */

.studio-flag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-divider);
  flex-shrink: 0;
}

.studio-flag-strip[hidden] {
  display: none;
}

.studio-flag-btn {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-muted);
  background: var(--color-surface-3);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  cursor: pointer;
  min-height: 28px;
  transition:
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.studio-flag-btn:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.studio-flag-btn.is-selected,
.studio-flag-btn[aria-pressed="true"] {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ─── Right Rail: Recipe ─── */

.studio-recipe {
  padding: var(--space-5) var(--space-4);
  border-left: 1px solid var(--color-border);
  overflow-y: auto;
  background: var(--color-surface);
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-3) transparent;
}

.studio-recipe::-webkit-scrollbar {
  width: 4px;
}

.studio-recipe::-webkit-scrollbar-thumb {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
}

.studio-recipe__header {
  margin-bottom: var(--space-4);
}

.studio-recipe__title {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.studio-recipe__rows {
  display: flex;
  flex-direction: column;
}

.studio-recipe__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-xs);
}

.studio-recipe__row:last-child {
  border-bottom: none;
}

.studio-recipe__row-label {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.studio-recipe__row-value {
  color: var(--color-text);
  text-align: right;
  word-break: break-word;
}

/* Change badge */
.studio-recipe__change-badge {
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--color-accent-muted);
  border-radius: var(--radius-sm);
}

.studio-recipe__change-badge[hidden] {
  display: none;
}

.studio-recipe__change-badge-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ─── Collection Strip ─── */

.studio-strip {
  flex-shrink: 0;
  height: 120px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.studio-strip__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  flex-shrink: 0;
  height: 36px;
}

.studio-strip__tabs {
  display: flex;
  gap: var(--space-1);
}

.studio-strip__tab {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  color: var(--color-text-faint);
  background: none;
  border: none;
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-sm);
  min-height: 24px;
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.studio-strip__tab:hover {
  color: var(--color-text-muted);
  background: var(--color-surface-2);
}

.studio-strip__tab--active,
.studio-strip__tab[aria-selected="true"] {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.studio-strip__coverage {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: right;
  flex-shrink: 0;
}

.studio-strip__scroll {
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-3) transparent;
  position: relative;
}

.studio-strip__scroll::-webkit-scrollbar {
  height: 4px;
}

.studio-strip__scroll::-webkit-scrollbar-thumb {
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
}

.studio-strip__thumbnails {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  height: 100%;
}

/* Strip empty states */
.studio-strip__empty {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  max-width: 48ch;
  margin: auto;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Thumbnail items */
.studio-strip__thumb {
  position: relative;
  flex-shrink: 0;
  height: 80px;
  width: auto;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-interactive);
}

.studio-strip__thumb:hover {
  border-color: var(--color-border-hover);
}

.studio-strip__thumb.is-active {
  border-color: var(--color-accent);
}

.studio-strip__thumb-img {
  height: 80px;
  width: auto;
  object-fit: cover;
  display: block;
}

/* Bookmark overlay on thumbnails */
.studio-strip__thumb-bookmark {
  position: absolute;
  top: var(--space-1);
  right: var(--space-1);
  font-size: 10px;
  line-height: 1;
  background: rgba(10, 10, 10, 0.7);
  border-radius: var(--radius-sm);
  padding: 2px 3px;
  opacity: 0;
  transition: opacity var(--transition-interactive);
}

.studio-strip__thumb:hover .studio-strip__thumb-bookmark,
.studio-strip__thumb.is-bookmarked .studio-strip__thumb-bookmark {
  opacity: 1;
}

/* Flag overlay on thumbnails */
.studio-strip__thumb-flag {
  position: absolute;
  top: var(--space-1);
  left: var(--space-1);
  font-size: 10px;
  line-height: 1;
  background: rgba(10, 10, 10, 0.7);
  border-radius: var(--radius-sm);
  padding: 2px 3px;
  display: none;
}

.studio-strip__thumb.is-flagged .studio-strip__thumb-flag {
  display: block;
}

/* ─── Shoe Picker Grid Items ─── */

.studio-shoe-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive);
  min-height: 44px;
}

.studio-shoe-card:hover {
  border-color: var(--color-border-hover);
}

.studio-shoe-card.is-selected {
  border-color: var(--color-accent);
}

.studio-shoe-card__img {
  width: 72px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.studio-shoe-card__name {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.3;
  max-width: 12ch;
  word-break: break-word;
}

/* ─── Responsive Breakpoints ─── */

/* ≤1279px: right rail hidden, two-column layout */
@media (max-width: 1279px) {
  .studio-workspace {
    grid-template-columns: 200px 1fr;
  }

  .studio-recipe {
    display: none;
  }
}

/* ≤959px: mobile gate shown, studio hidden */
@media (max-width: 959px) {
  .studio {
    display: none;
  }

  .studio-mobile-gate {
    display: flex;
  }
}

/* ─── Mobile Gate ─── */

.studio-mobile-gate {
  display: none; /* shown only at ≤959px */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  height: 100vh;
  padding: var(--space-8);
  text-align: center;
  background: var(--color-bg);
  color: var(--color-text);
}

.studio-mobile-gate__icon {
  font-size: 3rem;
  line-height: 1;
}

.studio-mobile-gate__title {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  max-width: none;
}

.studio-mobile-gate__body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 36ch;
}