#threat-escalation {
  --te-danger: #d63031;
  --te-danger-subtle: color-mix(in srgb, #d63031 15%, transparent);
  --te-warn: #e17055;
}

@media (prefers-color-scheme: dark) {
  #threat-escalation {
    --te-danger: #ff6b6b;
    --te-danger-subtle: color-mix(in srgb, #ff6b6b 15%, transparent);
    --te-warn: #fab1a0;
  }
}

.te-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-bottom: 1rem;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid color-mix(in srgb, var(--fg) 8%, transparent);
}

.te-step-btn {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.02em;
  padding: 0.3rem 0.6rem;
  border: 1px solid color-mix(in srgb, var(--fg) 15%, transparent);
  background: transparent;
  color: var(--fg-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.te-step-btn:hover {
  color: var(--fg);
  border-color: color-mix(in srgb, var(--fg) 40%, transparent);
}

.te-step-btn.te-active {
  background: color-mix(in srgb, var(--fg) 7%, transparent);
  border-color: color-mix(in srgb, var(--fg) 30%, transparent);
  color: var(--fg);
}

.te-diagram {
  margin: 1.25rem 0 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.te-diagram svg {
  width: 100%;
  height: auto;
}

.te-diagram svg text {
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.te-diagram svg text.te-label-lower {
  text-transform: none;
  letter-spacing: 0.03em;
}

.te-description {
  min-height: 3rem;
  padding-top: 0.75rem;
  border-top: 1px solid color-mix(in srgb, var(--fg) 8%, transparent);
}

.te-desc-title {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
  color: var(--fg);
}

.te-desc-text {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

.te-detection {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.4rem;
  margin-bottom: 0.75rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
}

.te-detection-bar {
  display: flex;
  gap: 2px;
}

.te-detection-bar span {
  width: 12px;
  height: 4px;
  background: color-mix(in srgb, var(--fg) 10%, transparent);
  transition: background 0.3s;
}

.te-detection-bar span.filled {
  background: var(--te-danger);
}

/* SVG transitions */
.te-diagram .te-node,
.te-diagram .te-arrow,
.te-diagram .te-attack {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.te-diagram .te-visible {
  opacity: 1;
}

@keyframes te-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

.te-diagram .te-pulse {
  animation: te-pulse 2.5s ease-in-out infinite;
}

@media (max-width: 600px) {
  .te-step-btn {
    font-size: 0.6rem;
    padding: 0.25rem 0.5rem;
  }
}