.classification-page {
  display: grid;
  grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  padding-top: 1.25rem;
  padding-bottom: 3rem;
}
.classification-sidebar { position: sticky; top: 1rem; padding: 1.35rem; }
.classifier-effective { margin-top: .55rem; font-size: .9rem; color: var(--muted, #5d6870); }
.field-help { margin: .45rem 0 0; font-size: .82rem; color: var(--muted, #68737b); line-height: 1.4; }
.filter-divider { border: 0; border-top: 1px solid #dde2e5; margin: 1.15rem 0; }
.queue-order-option { display: flex; align-items: flex-start; gap: .65rem; margin: .15rem 0 1rem; padding: .75rem; border: 1px solid #d7dfe3; border-radius: 9px; background: #fafbfb; cursor: pointer; }
.queue-order-option input { margin-top: .22rem; }
.queue-order-option span { display: flex; flex-direction: column; gap: .15rem; }
.queue-order-option strong { color: #37444b; font-size: .86rem; }
.queue-order-option small { color: var(--muted, #68737b); font-size: .74rem; line-height: 1.35; }
.classification-main { min-width: 0; padding: 1.35rem; }
.classification-topbar { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding-bottom: 1rem; border-bottom: 1px solid #e0e4e7; }
.classification-topbar > div { display: flex; flex-direction: column; gap: .2rem; }
.classification-topbar span { color: #66727a; font-size: .9rem; }
.classification-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 390px); gap: 1.35rem; padding-top: 1.25rem; }
.classification-image-column { min-width: 0; }
.classification-media-toggle { display: flex; justify-content: center; gap: .45rem; margin-bottom: .7rem; }
.classification-media-toggle button { border: 1px solid #cbd3d8; border-radius: 999px; padding: .45rem .85rem; background: #fff; color: #3e4a51; cursor: pointer; font: inherit; font-size: .9rem; }
.classification-media-toggle button.active { border-color: #7a1527; background: #7a1527; color: #fff; }
.classification-media-toggle button:disabled { cursor: not-allowed; opacity: .45; }
.classification-image-wrap { display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 1 / 1; min-height: 0; padding: .5rem; background: #f3f5f6; border: 1px solid #dbe1e4; border-radius: 10px; overflow: hidden; }
.classification-image { display: block; width: 100%; height: 100%; max-height: none; object-fit: contain; }
.classification-event-line { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem 1rem; padding-top: .8rem; }
.classification-event-line span { color: #66727a; }
.classification-image-tags { display: flex; flex-direction: column; gap: .75rem; margin-top: 1rem; }
.classification-controls { display: flex; flex-direction: column; gap: 1rem; }
.classification-current, .classification-catalog-label, .classification-message { padding: .75rem .85rem; border-radius: 8px; background: #f3f5f6; }
.classification-message:empty { display: none; }
.classification-message.error { background: #fff0f0; color: #8d1623; }
.classification-message.success { background: #eef8f1; color: #1d6136; }
.classification-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem; }
.classification-buttons button { display: flex; align-items: center; gap: .65rem; text-align: left; padding: .8rem; border: 1px solid #cbd3d8; border-radius: 8px; background: white; cursor: pointer; font: inherit; }
.classification-buttons button:hover { border-color: #7c8d96; }
.classification-buttons button.selected { border-color: #7a1527; box-shadow: inset 0 0 0 1px #7a1527; background: #fff6f7; }
.classification-buttons button:disabled { opacity: .55; cursor: default; }
.annotation-fieldset { margin: 0; padding: 0; border: 0; }
.annotation-fieldset legend, .annotation-tags summary { margin-bottom: .55rem; font-weight: 700; color: #2f3940; }
.annotation-fieldset legend span, .annotation-tags summary span { margin-left: .35rem; color: #728089; font-size: .78rem; font-weight: 500; }
.quality-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.quality-buttons button { padding: .65rem .7rem; border: 1px solid #cbd3d8; border-radius: 8px; background: #fff; color: #303b42; cursor: pointer; font: inherit; text-align: left; }
.quality-buttons button.selected { border-color: #245e8c; box-shadow: inset 0 0 0 1px #245e8c; background: #f2f8fc; }
.quality-buttons button:disabled { cursor: default; opacity: .55; }
.annotation-tags { border: 1px solid #dbe1e4; border-radius: 8px; padding: .7rem .8rem; background: #fafbfb; }
.annotation-tags summary { margin: 0; cursor: pointer; }
.annotation-tags[open] summary { margin-bottom: .65rem; }
.tag-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .45rem .7rem; }
.tag-grid label { display: flex; align-items: flex-start; gap: .4rem; font-size: .86rem; line-height: 1.25; cursor: pointer; }
.tag-grid input { margin-top: .13rem; }
.subjective-tags label { font-style: italic; }
.classification-save-row {
  position: sticky;
  top: .75rem;
  z-index: 10;
  display: grid;
  padding: .3rem 0;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 8px 12px -14px rgba(22, 31, 36, .7);
}
.classification-save-row .btn { width: 100%; }
kbd { display: inline-block; min-width: 1.5em; padding: .1em .35em; border: 1px solid #c6cdd2; border-bottom-width: 2px; border-radius: 4px; background: #fafafa; font: 700 .8em/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; text-align: center; }
.classification-nav { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; }
.classification-nav #classification-next { grid-column: 1 / -1; }
.classification-secondary-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.text-button { border: 0; padding: 0; background: transparent; color: #7a1527; cursor: pointer; text-decoration: underline; font: inherit; }
.disabled-link { pointer-events: none; opacity: .5; }
.hidden { display: none !important; }
@media (max-width: 980px) {
  .classification-page { grid-template-columns: 1fr; }
  .classification-sidebar { position: static; padding: 1.1rem; }
  .classification-layout { grid-template-columns: 1fr; }
  .classification-main { padding: 1.1rem; }
  .classification-image-wrap { min-height: 0; padding: .5rem; }
  .classification-image { width: 100%; height: 100%; max-height: none; }
  .classification-save-row { top: .5rem; }
}

/* Version-1 locked filter controls */
.classification-sidebar select:disabled {
  cursor: not-allowed;
  opacity: 0.68;
  background-color: #f3f4f6;
}