.bd-article .plantuml {
  overflow: auto;
  display: block;
  max-width: 100%;
  padding: 1rem;
  margin: 1.5rem 0;
  border: 1px solid var(--pst-color-border, #d0d7de);
  border-radius: 0.9rem;
  background: var(--pst-color-surface, #ffffff);
}

.bd-article .plantuml object,
.bd-article .plantuml img {
  display: block;
  max-width: none;
  margin: 0 auto;
}

.uml-diagram-unavailable {
  padding: 1rem 1.1rem;
  margin: 1.5rem 0;
  border: 1px dashed var(--pst-color-border, #d0d7de);
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--pst-color-surface, #ffffff) 94%, #f8fafc 6%);
}

.uml-diagram-unavailable p {
  margin: 0;
}

.uml-diagram {
  margin: 1.5rem 0;
  border: 1px solid var(--pst-color-border, #d0d7de);
  border-radius: 0.9rem;
  overflow: hidden;
  background: var(--pst-color-surface, #ffffff);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.uml-diagram__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--pst-color-border, #d0d7de);
  background: color-mix(in srgb, var(--pst-color-surface, #ffffff) 92%, #e9eef5 8%);
}

.uml-diagram__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.8rem;
  min-width: 0;
}

.uml-diagram__badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #0f172a;
  background: #dbe7f3;
}

.uml-diagram__title {
  font-weight: 600;
}

.uml-diagram__hint {
  font-size: 0.9rem;
  color: var(--pst-color-text-muted, #52606d);
}

.uml-diagram__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.uml-diagram__link,
.uml-diagram__button,
.uml-modal__link,
.uml-modal__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.3rem;
  padding: 0.45rem 0.85rem;
  border-radius: 0.65rem;
  border: 1px solid var(--pst-color-border, #d0d7de);
  background: #ffffff;
  color: inherit;
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}

.uml-diagram__button:hover,
.uml-diagram__link:hover,
.uml-modal__link:hover,
.uml-modal__close:hover {
  background: #f5f8fb;
  text-decoration: none;
}

.uml-diagram__viewport {
  display: block;
  width: 100%;
  padding: 1rem;
  border: 0;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.9), rgba(255, 255, 255, 1));
  overflow: auto;
  cursor: zoom-in;
  text-align: left;
}

.uml-diagram__viewport:focus-visible,
.uml-diagram__button:focus-visible,
.uml-diagram__link:focus-visible,
.uml-modal__close:focus-visible,
.uml-modal__link:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.uml-diagram__image {
  display: block;
  width: auto;
  max-width: none;
  height: auto;
  margin: 0 auto;
  background: #ffffff;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

.uml-modal[hidden] {
  display: none;
}

.uml-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  grid-template-rows: auto 1fr;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(3px);
}

.uml-modal__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  color: #ffffff;
}

.uml-modal__title {
  font-weight: 700;
}

.uml-modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.uml-modal__close,
.uml-modal__link {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.uml-modal__stage {
  padding: 0 1rem 1rem;
  overflow: auto;
}

.uml-modal__figure {
  margin: 0 auto;
  padding: 1rem;
  min-height: 100%;
  width: max-content;
  max-width: none;
}

.uml-modal__image {
  display: block;
  width: auto;
  max-width: none;
  height: auto;
  background: #ffffff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.uml-modal-open {
  overflow: hidden;
}

@media (max-width: 900px) {
  .uml-diagram__toolbar,
  .uml-modal__header {
    align-items: flex-start;
  }

  .uml-diagram__viewport,
  .uml-modal__stage {
    padding: 0.75rem;
  }
}