.pz-controls {
  gap: 1.1rem 1.5rem;
}

.pz-chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.component-grid {
  flex: 1 1 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.85rem;
}

.component-block {
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: #f8fafc;
  padding: 0.85rem 0.95rem 0.95rem;
  transition: opacity 0.15s, background 0.15s;
}

.component-block.disabled {
  opacity: 0.52;
  background: #f1f5f9;
}

.component-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding-bottom: 0.65rem;
  margin-bottom: 0.65rem;
  border-bottom: 1px solid var(--border);
}

.component-head input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}

.component-head label {
  margin: 0;
  line-height: 1.2;
  cursor: pointer;
}

.component-factor {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

#complex-pair-block .component-head {
  flex-wrap: wrap;
}

#complex-pair-block .component-factor {
  flex: 1 1 100%;
  margin-left: 1.7rem;
}

.compact-control {
  margin-top: 0.7rem;
}

.compact-control:first-of-type {
  margin-top: 0;
}

.compact-control label {
  margin-bottom: 0.4rem;
}

.pz-chart-grid .chart-section h2 {
  margin: 0 0 0.65rem 0.35rem;
}

.split-chart-wrap {
  height: 360px;
}

.select-group select {
  width: 100%;
  padding: 0.42rem 0.55rem;
  border: 1.5px solid var(--border);
  border-radius: 7px;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--text);
  background: #f8fafc;
  cursor: pointer;
}

.select-group select:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
}

.component-block.disabled input[type="range"],
.component-block.disabled input[type="number"] {
  cursor: not-allowed;
}

.explanation {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.author-footer .fa-brands {
  font-size: 1.1rem;
  line-height: 1;
  position: relative;
  top: 2px;
}

.swatch.pole { background: #1e293b; }
.swatch.zero { background: #2563eb; }
.swatch.stable { background: #16a34a; }

.badge-stable { background: #f0fdf4; color: #166534; border: 1.5px solid #bbf7d0; }
.badge-oscillatory { background: #ecfeff; color: #0e7490; border: 1.5px solid #a5f3fc; }
.badge-slow { background: #fefce8; color: #854d0e; border: 1.5px solid #fde68a; }
.badge-unstable { background: #fff1f2; color: #9f1239; border: 1.5px solid #fecdd3; }

@media (max-width: 760px) {
  .pz-chart-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .component-grid {
    grid-template-columns: 1fr;
  }

  .split-chart-wrap {
    height: 300px;
  }

  .component-factor {
    white-space: normal;
    text-align: right;
  }
}