/* X.4.e + X.4.f — Studio editor styles. Pairs with diagram.css's
 * shared chrome tokens (--studio-bg / --studio-fg / etc.) so the
 * editor list page sits visually next to the diagram page.
 */

#entity-list,
.entity-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
  gap: 1rem;
  padding: 1rem;
}

/* X.4.f.7 — home-page layout overrides. The diagram pane and editor
 * pages both lock body to viewport height; the home page composes
 * both and needs to scroll past the iframe + every entity section.
 */
body.home-page {
  height: auto;
  min-height: 100vh;
  display: block;
}

.home-diagram {
  border-bottom: 1px solid var(--studio-border);
  background: white;
  height: 50vh;
  min-height: 24rem;
}

.home-diagram iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.home-entities {
  padding: 0.5rem 1rem 2rem;
}

.home-section {
  background: white;
  border: 1px solid var(--studio-border);
  border-radius: 0.4rem;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.home-section > summary {
  cursor: pointer;
  padding: 0.6rem 1rem;
  font-weight: 600;
  color: var(--studio-accent);
  background: var(--studio-bg);
  user-select: none;
}

.home-section > summary:hover {
  background: var(--studio-tint);
}

.home-section > summary .count {
  color: var(--studio-muted);
  font-weight: 400;
  margin-left: 0.25rem;
}

.home-section > summary .home-section-link {
  margin-left: 0.5rem;
  color: var(--studio-accent);
  text-decoration: none;
  font-weight: 400;
  font-size: 0.85rem;
}

.home-section > summary .home-section-link:hover {
  text-decoration: underline;
}

.home-section-loading {
  padding: 1rem;
  color: var(--studio-muted);
  font-style: italic;
  margin: 0;
}

/* X.4.f.8 — diagram-driven card filter. */
.entity-card.is-hidden-by-focus {
  display: none;
}

.focus-filter-indicator {
  color: var(--studio-muted);
  font-weight: 400;
  font-size: 0.85rem;
}

/* X.4.f.9.create-page — full-page Create New <kind> screen. */
body.create-page {
  height: auto;
  min-height: 100vh;
  display: block;
}
.create-page-main {
  max-width: 56rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 56rem) {
  .create-page-main {
    grid-template-columns: 22rem 1fr;
  }
}
.create-intro {
  background: white;
  border: 1px solid var(--studio-border);
  border-radius: 0.4rem;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--studio-fg);
}
.create-intro p {
  margin: 0 0 0.75rem;
}
.create-intro p:last-child {
  margin-bottom: 0;
}
.create-intro code {
  background: var(--studio-tint);
  padding: 0.1rem 0.3rem;
  border-radius: 0.2rem;
  font-size: 0.85em;
}
.create-form-wrap {
  background: white;
  border: 1px solid var(--studio-border);
  border-radius: 0.4rem;
  padding: 1.25rem;
}
.create-form .form-actions {
  margin-top: 1rem;
}

/* X.4.f.11.5 — Rail subtype picker (step 1 of the 2-step rail
 * create flow). Two big tappable buttons stacked vertically (or
 * side-by-side on wider screens), each with a strong title +
 * one-line example.
 */
.rail-subtype-picker {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 36rem) {
  .rail-subtype-picker {
    grid-template-columns: 1fr 1fr;
  }
}
.rail-subtype-button {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.25rem 1.25rem;
  border: 2px solid var(--studio-border);
  border-radius: 0.4rem;
  background: white;
  color: var(--studio-fg);
  text-decoration: none;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color 0.1s ease-in-out, background 0.1s ease-in-out;
}
.rail-subtype-button:hover {
  border-color: var(--studio-accent);
  background: var(--studio-tint);
}
.rail-subtype-button strong {
  color: var(--studio-accent);
  font-size: 1.05rem;
}
.rail-subtype-button small {
  color: var(--studio-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

/* X.4.f.8.reverse — clickable card title → diagram focus. */
.entity-card-title {
  cursor: pointer;
  user-select: none;
}
.entity-card-title:hover {
  text-decoration: underline;
}
.entity-card-title:focus {
  outline: 2px solid var(--studio-accent);
  outline-offset: 2px;
  border-radius: 0.2rem;
}

.entity-card {
  background: white;
  border: 1px solid var(--studio-border);
  border-radius: 0.4rem;
  padding: 1rem;
  font-size: 0.875rem;
}

.entity-card.editing {
  border-color: var(--studio-accent);
  box-shadow: 0 0 0 2px rgba(31, 78, 121, 0.15);
}

.entity-card header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--studio-border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}

.entity-card h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--studio-accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* X.4.f.11 — Rail subtype badge in the read card title + edit form
 * header. Compact pill so it doesn't overwhelm the entity name; uses
 * tint background + accent foreground for theme consistency.
 */
.entity-subtype-badge {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  font-size: 0.7rem;
  font-weight: 500;
  font-family: ui-sans-serif, system-ui, sans-serif;
  color: var(--studio-accent);
  background: var(--studio-tint);
  border-radius: 0.25rem;
  vertical-align: middle;
  letter-spacing: 0.02em;
}

.entity-card .edit-link,
.entity-card .cancel-link,
.entity-card .delete-link {
  color: var(--studio-accent);
  text-decoration: none;
  font-size: 0.75rem;
  cursor: pointer;
}
.entity-card .edit-link:hover,
.entity-card .cancel-link:hover {
  text-decoration: underline;
}
.entity-card .delete-link {
  color: var(--color-danger, #c62828);
}
.entity-card .delete-link:hover {
  text-decoration: underline;
}
.entity-card-actions {
  display: flex;
  gap: 0.75rem;
}

/* X.4.f.9 — section-header "Add" button (peer of the ↗ deep-link). */
.home-section-add {
  margin-left: 0.5rem;
  color: var(--studio-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
}
.home-section-add:hover {
  text-decoration: underline;
}

.entity-card dl {
  margin: 0;
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.4rem 0.75rem;
}
.entity-card dt {
  color: var(--studio-muted);
  font-weight: 500;
}
.entity-card dd {
  margin: 0;
  word-break: break-word;
}

.field-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 0.75rem;
}

.field-row label {
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--studio-fg);
}

.field-row label .required {
  color: #c62828;
}

.field-row input[type="text"],
.field-row select,
.field-row textarea {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--studio-border);
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-family: inherit;
  background: white;
}

.field-row input[type="text"]:focus,
.field-row select:focus,
.field-row textarea:focus {
  outline: 2px solid var(--studio-accent);
  outline-offset: -1px;
  border-color: var(--studio-accent);
}

.field-row textarea {
  resize: vertical;
  min-height: 4rem;
}

/* X.4.f.10 — multi_select renders a checkbox group (easier than
 * Cmd/Ctrl-click on <select multiple>). Two-column layout when there
 * are many options; collapses to one column on narrow screens.
 */
.multi-select-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem 0.75rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--studio-border);
  border-radius: 0.25rem;
  background: white;
  max-height: 14rem;
  overflow-y: auto;
}
@media (min-width: 28rem) {
  .multi-select-group {
    grid-template-columns: 1fr 1fr;
  }
}
.multi-select-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 400;
  font-size: 0.875rem;
  cursor: pointer;
  color: var(--studio-fg);
}
.multi-select-item input[type="checkbox"] {
  cursor: pointer;
}

/* AB.3.7 — leg_rail_xor_groups field renders as a stack of
 * <fieldset> rows, each one a multi_select checkbox group whose
 * options are the parent TransferTemplate's own leg_rails. The
 * trailing ".xor-group.new" row is the always-present "Add new
 * XOR group" slot; uncheck every box in a regular row to drop it
 * on save.
 */
.multi-select-groups {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.xor-group {
  border: 1px solid var(--studio-border);
  border-radius: 0.25rem;
  padding: 0.5rem 0.75rem;
  background: white;
}
.xor-group > legend {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--studio-fg);
  padding: 0 0.4rem;
}
.xor-group.new {
  border-style: dashed;
  background: #f9fafb;
}
.xor-group.new > legend {
  color: var(--studio-muted);
  font-weight: 500;
}
.xor-group > .multi-select-group {
  border: none;
  padding: 0.25rem 0;
  max-height: 9rem;
  background: transparent;
}
.multi-select-groups-empty {
  font-size: 0.85rem;
  color: var(--studio-muted);
  padding: 0.5rem 0.6rem;
  border: 1px dashed var(--studio-border);
  border-radius: 0.25rem;
  background: #f9fafb;
}
.xor-group-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.85rem;
}
.xor-group-list > li {
  margin: 0.15rem 0;
}

.field-helper {
  font-size: 0.75rem;
  color: var(--studio-muted);
}

.field-error {
  font-size: 0.75rem;
  color: var(--color-danger, #c62828);
  background: #fef2f2;
  padding: 0.25rem 0.5rem;
  border-radius: 0.2rem;
}

.form-global-error {
  background: #fef2f2;
  color: var(--color-danger, #c62828);
  border: 1px solid #fecaca;
  padding: 0.5rem 0.75rem;
  border-radius: 0.25rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.form-actions button {
  background: var(--studio-accent);
  color: var(--color-accent-fg, white);
  border: 1px solid var(--studio-accent);
  padding: 0.4rem 1rem;
  border-radius: 0.25rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.form-actions button:hover {
  /* Slight darken via opacity rather than a separate token —
   * matches App2's accent-hover convention (input.css comments). */
  opacity: 0.85;
}