.mia-diagram {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
  overflow: hidden;
}

.mia-diagram--loading {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mia-diagram--loading::after {
  content: '';
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: mia-spin 0.8s linear infinite;
}

@keyframes mia-spin {
  to { transform: rotate(360deg); }
}

.mia-diagram__title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.mia-diagram__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.mia-diagram__svg-wrap {
  position: relative;
  width: 100%;
}

.mia-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

/* Zone highlights (location diagrams) */
.mia-zone {
  cursor: pointer;
  transition: opacity 0.15s;
}

.mia-zone:hover {
  opacity: 1 !important;
}

.mia-zone--dimmed {
  opacity: 0.25;
}

/* Tooltip */
.mia-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(13, 17, 23, 0.95);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--text-primary);
  white-space: nowrap;
  z-index: 10;
  transform: translate(-50%, -100%);
  margin-top: -10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.12s;
}

.mia-tooltip--visible {
  opacity: 1;
}

.mia-tooltip__label {
  font-weight: 600;
  margin-bottom: 2px;
}

.mia-tooltip__spec {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.mia-tooltip__severity {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 3px;
}

.mia-tooltip__severity--critical {
  background: rgba(248, 81, 73, 0.2);
  color: #f85149;
}

.mia-tooltip__severity--high {
  background: rgba(210, 153, 34, 0.2);
  color: #d29922;
}

.mia-tooltip__severity--moderate {
  background: rgba(78, 205, 196, 0.2);
  color: #4ecdc4;
}

.mia-tooltip__severity--low {
  background: rgba(139, 148, 158, 0.15);
  color: #8b949e;
}

/* Callout card */
.mia-callout {
  position: absolute;
  right: 20px;
  top: 60px;
  width: 260px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 16px;
  z-index: 20;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: mia-callout-in 0.15s ease;
}

@keyframes mia-callout-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.mia-callout__close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
}

.mia-callout__close:hover { color: var(--text-primary); }

.mia-callout__label {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 6px;
  padding-right: 20px;
}

.mia-callout__severity {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.mia-callout__severity--critical { background: rgba(248, 81, 73, 0.15); color: #f85149; }
.mia-callout__severity--high { background: rgba(210, 153, 34, 0.15); color: #d29922; }
.mia-callout__severity--moderate { background: rgba(78, 205, 196, 0.15); color: #4ecdc4; }
.mia-callout__severity--low { background: rgba(139, 148, 158, 0.1); color: #8b949e; }

.mia-callout__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Exploded view parts */
.mia-part {
  cursor: pointer;
  transition: opacity 0.2s, transform 0.4s ease;
}

.mia-part--dimmed { opacity: 0.2; }
.mia-part--focused { opacity: 1; }

.mia-part-label {
  font-family: var(--font-sans);
  font-size: 11px;
  fill: var(--text-secondary);
  pointer-events: none;
}

.mia-part-number {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  fill: var(--accent);
}

.mia-callout-line {
  stroke: var(--border-light);
  stroke-width: 1;
  stroke-dasharray: 3 2;
}

/* Explode toggle */
.mia-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 14px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 8px;
}

.mia-toggle:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.mia-toggle--active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* Sequence controls */
.mia-seq-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.mia-seq-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}

.mia-seq-btn:hover { border-color: var(--accent); color: var(--accent); }
.mia-seq-btn--active { background: var(--accent); border-color: var(--accent); color: white; }

.mia-seq-progress {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.mia-seq-progress__fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.mia-seq-step-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Sequence step markers */
.mia-step-marker {
  cursor: pointer;
  transition: all 0.2s;
}

.mia-step-marker--done circle { fill: #3fb950; }
.mia-step-marker--done text { fill: white; }

.mia-step-marker--current circle {
  fill: var(--accent);
  animation: mia-pulse 1.5s ease infinite;
}
.mia-step-marker--current text { fill: white; }

@keyframes mia-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.mia-step-marker--pending circle { fill: var(--bg-tertiary); stroke: var(--border-light); }
.mia-step-marker--pending text { fill: var(--text-muted); }

/* Legend (exploded views) */
.mia-legend {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.mia-legend__item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 0;
  transition: color 0.15s;
}

.mia-legend__item:hover { color: var(--text-primary); }

.mia-legend__num {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
}

.mia-legend__item--active .mia-legend__num {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* System diagram flow lines */
.mia-flow-line {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.mia-flow-arrow {
  stroke-width: 1.5;
}

.mia-node {
  cursor: pointer;
  transition: opacity 0.15s;
}

.mia-node--dimmed { opacity: 0.3; }

/* Severity zone colors in legend */
.mia-legend-severity {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.mia-legend-severity__item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.mia-legend-severity__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Print styles */
@media print {
  .mia-diagram {
    background: white;
    border-color: #ccc;
    break-inside: avoid;
  }
  .mia-diagram__title { color: #111; }
  .mia-diagram__desc { color: #555; }
  .mia-tooltip, .mia-callout { display: none; }
  .mia-seq-controls { display: none; }
  .mia-toggle { display: none; }
}

/* Responsive */
@media (max-width: 768px) {
  .mia-callout {
    position: relative;
    right: auto;
    top: auto;
    width: 100%;
    margin-top: 12px;
  }

  .mia-legend { gap: 4px 12px; }
  .mia-seq-controls { flex-wrap: wrap; }
}