/**
 * Novel Theme - Mermaid Diagram Styles
 * Mermaid diagrams, error containers
 */

/* Mermaid Diagrams */
pre.mermaid,
.mermaid {
  text-align: center;
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-light);
  overflow-x: auto;
  /* Reset pre defaults for mermaid */
  white-space: pre-wrap;
  font-family: inherit;
}

pre.mermaid[data-processed="true"],
.mermaid-rendered {
  background: transparent;
  border: none;
  padding: 0;
}

/* Ensure rendered SVGs scale within their container */
.mermaid svg {
  max-width: 100%;
  height: auto;
}

.mermaid-error-container {
  background: #fff5f5;
  border-color: #f5c6cb;
}

[data-theme="dark"] .mermaid-error-container {
  background: #3a2020;
  border-color: #6a3030;
}

.mermaid-error {
  text-align: left;
  color: #842029;
  font-size: 0.875rem;
}

[data-theme="dark"] .mermaid-error {
  color: #f8d7da;
}

.mermaid-error strong {
  display: block;
  margin-bottom: 0.5rem;
}

.mermaid-error pre {
  background: rgba(0, 0, 0, 0.05);
  padding: 0.5rem;
  margin: 0.5rem 0;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
}

[data-theme="dark"] .mermaid-error pre {
  background: rgba(255, 255, 255, 0.05);
}

.mermaid-error details {
  margin-top: 0.5rem;
}

.mermaid-error summary {
  cursor: pointer;
  color: var(--text-muted);
}

/* Mermaid expand toggle */
.mermaid-wrapper {
  position: relative;
  margin: 1.5rem 0;
}

.mermaid-expand-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 10;
  padding: 0.375rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1;
  transition: all 0.2s;
  opacity: 0;
}

.mermaid-wrapper:hover .mermaid-expand-btn,
.mermaid-wrapper:focus-within .mermaid-expand-btn {
  opacity: 1;
}

/* Always show button when expanded so user can collapse */
.mermaid-wrapper.expanded .mermaid-expand-btn {
  opacity: 1;
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.mermaid-expand-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--accent);
}

.mermaid-wrapper.expanded .mermaid-expand-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Expanded state — width and offset set dynamically by JS (initMermaidExpand)
   to fill .main-content without affecting sibling content or using viewport units */
.mermaid-wrapper.expanded {
  max-width: none;
  position: relative;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-radius: 8px;
}

.mermaid-wrapper.expanded .mermaid {
  max-width: none;
}

/* Override Mermaid's inline max-width so SVG fills expanded container */
.mermaid-wrapper.expanded .mermaid svg {
  max-width: 100% !important;
  width: 100%;
}

/* Icon visibility toggle */
.mermaid-expand-btn .icon-expand { display: inline; }
.mermaid-expand-btn .icon-collapse { display: none; }

.mermaid-wrapper.expanded .mermaid-expand-btn .icon-expand { display: none; }
.mermaid-wrapper.expanded .mermaid-expand-btn .icon-collapse { display: inline; }
