.project-version-history-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(3px);
  box-sizing: border-box;
}

.project-version-history-dialog {
  width: min(960px, 96vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  background: var(--color-base);
  color: var(--color-text-primary);
  border: 1px solid var(--layer-btn-border);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

.project-version-history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--layer-separator);
}

.project-version-history-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.project-version-history-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--btn-hover-border-color);
  border-radius: 6px;
  background: var(--btn-bg);
  color: var(--color-text-primary);
  cursor: pointer;
}

.project-version-history-close:hover {
  background: var(--btn-hover-bg);
}

.project-version-history-body {
  position: relative;
  display: grid;
  grid-template-columns: minmax(220px, 0.9fr) minmax(0, 1.4fr);
  gap: 0;
  min-height: 360px;
  overflow: hidden;
}

.project-version-history-list {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid var(--layer-separator);
  overflow: hidden;
}

.project-version-history-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--layer-separator);
}

.project-version-history-refresh {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--btn-hover-border-color);
  border-radius: 6px;
  background: var(--btn-bg);
  color: var(--color-text-primary);
  cursor: pointer;
}

.project-version-history-refresh:hover {
  background: var(--btn-hover-bg);
}

.project-version-history-items {
  overflow: auto;
  padding: 8px;
}

.project-version-history-item {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(52px, 64px) minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 8px;
  margin: 0 0 8px;
  border: 1px solid var(--layer-btn-border);
  border-radius: 8px;
  background: var(--layer-btn-bg);
  color: var(--color-text-primary);
  text-align: left;
  cursor: pointer;
}

.project-version-history-item:hover {
  background: var(--layer-btn-hover);
}

.project-version-history-item.is-selected {
  border-color: var(--btn-active-border-color);
  background: var(--btn-active-bg);
}

.project-version-history-item.is-unavailable {
  opacity: 0.72;
}

.project-version-history-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
  background: var(--layer-preview-bg);
  border: 1px solid var(--layer-preview-border);
}

.project-version-history-thumb-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  background: var(--layer-preview-bg);
  border: 1px solid var(--layer-preview-border);
  color: var(--color-text-secondary);
}

.project-version-history-item-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.project-version-history-item-title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-version-history-item-meta {
  font-size: 11px;
  line-height: 1.35;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-version-history-preview {
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.project-version-history-preview-stage {
  flex: 1;
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  background: rgba(0, 0, 0, 0.12);
  overflow: auto;
}

.project-version-history-preview-image {
  max-width: 100%;
  max-height: 52vh;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--layer-preview-border);
  background: var(--layer-preview-bg);
}

.project-version-history-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  padding: 24px;
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
}

.project-version-history-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--layer-separator);
}

.project-version-history-detail {
  min-width: 0;
}

.project-version-history-detail-label {
  font-size: 10px;
  line-height: 1.3;
  color: var(--color-text-secondary);
}

.project-version-history-detail-value {
  font-size: 12px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-version-history-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--layer-separator);
}

.project-version-history-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: 7px 14px;
  border: 1px solid var(--btn-hover-border-color);
  border-radius: 6px;
  background: var(--btn-bg);
  color: var(--color-text-primary);
  cursor: pointer;
}

.project-version-history-action:hover {
  background: var(--btn-hover-bg);
}

.project-version-history-action.primary {
  border-color: var(--btn-active-border-color);
  background: var(--color-accent);
  color: #fff;
}

.project-version-history-action.primary:hover {
  background: var(--color-accent-hover);
}

.project-version-history-body.is-locked .project-version-history-list,
.project-version-history-body.is-locked .project-version-history-preview {
  filter: blur(7px);
  opacity: 0.58;
  pointer-events: none;
  user-select: none;
}

.project-version-history-paywall {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.28);
  box-sizing: border-box;
}

.project-version-history-paywall[hidden] {
  display: none;
}

.project-version-history-paywall-card {
  inline-size: min(100%, 28rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--btn-active-border-color);
  border-radius: 8px;
  background: rgba(25, 25, 25, 0.92);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.42);
  text-align: center;
}

.project-version-history-paywall-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--btn-active-bg);
  color: var(--color-text-primary);
}

.project-version-history-paywall-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
}

.project-version-history-paywall-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.55;
}

.project-version-history-locked-item {
  cursor: default;
}

.project-version-history-locked-thumb,
.project-version-history-locked-preview-cell,
.project-version-history-locked-line {
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.07));
  background-size: 180% 100%;
  animation: project-version-history-sheen 1.8s ease-in-out infinite;
}

.project-version-history-locked-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--layer-preview-border);
}

.project-version-history-locked-line {
  height: 12px;
}

.project-version-history-locked-line.wide {
  width: 86%;
}

.project-version-history-locked-line.narrow {
  width: 54%;
}

.project-version-history-locked-preview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: min(100%, 340px);
  aspect-ratio: 3 / 4;
  padding: 8px;
  border: 1px solid var(--layer-preview-border);
  border-radius: 8px;
  background: var(--layer-preview-bg);
}

.project-version-history-locked-preview-cell {
  min-width: 0;
  min-height: 0;
}

.project-version-history-locked-detail {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

@keyframes project-version-history-sheen {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: -180% 0;
  }
}

.project-version-history-action:disabled,
.project-version-history-refresh:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 720px) {
  .project-version-history-overlay {
    padding: 12px;
  }
  .project-version-history-dialog {
    max-height: 92vh;
  }
  .project-version-history-body {
    grid-template-columns: 1fr;
    min-height: 0;
    overflow: auto;
  }
  .project-version-history-list {
    border-right: none;
    border-bottom: 1px solid var(--layer-separator);
    max-height: 34vh;
  }
  .project-version-history-preview-stage {
    min-height: 220px;
  }
  .project-version-history-details {
    grid-template-columns: 1fr;
  }
}