/*
 * diagram-zoom.css
 *
 * Styles the inline expand-button on Mermaid diagrams and the
 * full-screen pan/zoom modal opened by diagram-zoom.js.
 */

/* Inline diagram host -- positions the expand trigger in the corner and
 * makes the whole diagram clickable for the modal. */
.diagram-zoom-host {
  position: relative;
  cursor: zoom-in;
}

.diagram-zoom-host:hover .diagram-zoom-trigger,
.diagram-zoom-host:focus-within .diagram-zoom-trigger {
  opacity: 1;
  transform: translateY(0);
}

.diagram-zoom-trigger {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  height: 1.85rem;
  padding: 0 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.12));
  border-radius: 999px;
  background: var(--md-default-bg-color, #fff);
  color: var(--md-default-fg-color, #333);
  cursor: zoom-in;
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1;
  /* Always visible, but understated until hover. */
  opacity: 0.82;
  transition: opacity 0.15s ease, transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  z-index: 2;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.diagram-zoom-trigger .diagram-zoom-trigger-label {
  font-size: 0.75rem;
}

.diagram-zoom-trigger:hover,
.diagram-zoom-trigger:focus-visible {
  background: var(--md-accent-fg-color, #f5a623);
  color: var(--md-accent-bg-color, #fff);
  opacity: 1;
  transform: translateY(-1px);
  outline: none;
}

/* Touch devices: full opacity since there is no hover. */
@media (hover: none) {
  .diagram-zoom-trigger {
    opacity: 0.95;
  }
}

/* Body lock while the modal is open. */
body.diagram-zoom-open {
  overflow: hidden;
}

/* Modal shell. */
.diagram-zoom-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
}

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

.diagram-zoom-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(2px);
  cursor: zoom-out;
}

.diagram-zoom-frame {
  position: relative;
  margin: auto;
  width: min(96vw, 1600px);
  height: min(94vh, 1100px);
  background: var(--md-default-bg-color, #fff);
  border-radius: 8px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.diagram-zoom-toolbar {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.08));
  background: var(--md-default-bg-color, #fff);
}

.diagram-zoom-spacer {
  flex: 1;
}

.diagram-zoom-btn {
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.12));
  border-radius: 4px;
  background: transparent;
  color: var(--md-default-fg-color, #333);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.diagram-zoom-btn:hover,
.diagram-zoom-btn:focus-visible {
  background: var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.05));
  outline: none;
}

.diagram-zoom-close-btn {
  font-size: 1.4rem;
}

.diagram-zoom-stage {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--md-code-bg-color, #f5f5f5);
  cursor: grab;
}

.diagram-zoom-stage:active {
  cursor: grabbing;
}

.diagram-zoom-stage svg {
  display: block;
  width: 100%;
  height: 100%;
}

.diagram-zoom-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-default-fg-color--light, #666);
  font-size: 0.85rem;
  pointer-events: none;
  text-align: center;
  padding: 1rem;
}

.diagram-zoom-hint {
  margin: 0;
  padding: 0.4rem 0.75rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light, #666);
  border-top: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.06));
  background: var(--md-default-bg-color, #fff);
}

/* Dark-mode polish (Material toggles data-md-color-scheme on <body>). */
[data-md-color-scheme="slate"] .diagram-zoom-trigger {
  background: var(--md-default-bg-color, #1e1e2e);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-md-color-scheme="slate"] .diagram-zoom-stage {
  background: #1a1a24;
}