/* AC Circuit Analyzer — tool-specific styles */

.ac-topo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}
@media (max-width: 575.98px) { .ac-topo-grid { grid-template-columns: repeat(2, 1fr); } }
.ac-topo-chip {
  padding: 0.55rem 0.5rem;
  border: 1px solid var(--evvy-border-color, #DEE2E6);
  background: var(--bs-body-bg, #fff);
  border-radius: 0.55rem;
  font-size: 0.82rem; font-weight: 600;
  color: var(--evvy-text-secondary, #555);
  cursor: pointer; transition: all 180ms ease;
}
.ac-topo-chip:hover {
  border-color: var(--cluster-dark, #1A237E);
  color: var(--cluster-dark, #1A237E);
  transform: translateY(-1px);
}
.ac-topo-chip.ac-active {
  background: var(--cluster-dark, #1A237E);
  color: var(--cluster-text, #fff);
  border-color: var(--cluster-dark, #1A237E);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--cluster-dark, #1A237E) 25%, transparent);
}

.ac-comp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin-top: 0.4rem;
}
@media (max-width: 575.98px) { .ac-comp-grid { grid-template-columns: 1fr; } }
.ac-comp .form-label { margin-bottom: 0.2rem; font-weight: 600; font-size: 0.75rem; }

.ac-freq-group { max-width: 320px; margin-top: 0.4rem; }

.ac-result-sub {
  margin-top: 0.3rem;
  font-size: 0.85rem; font-weight: 600;
  color: var(--evvy-text-secondary, #777);
  font-variant-numeric: tabular-nums;
}

/* Detail card */
.ac-detail-card,
.ac-bode-card {
  margin-top: 1rem;
  padding: 0.95rem 1.1rem;
  border-radius: 0.85rem;
  border: 1px solid var(--evvy-border-color, #DEE2E6);
  background: var(--bs-body-bg, #fff);
}
.ac-detail-header,
.ac-bode-header {
  display: flex; align-items: center; gap: 0.45rem;
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--cluster-dark, #1A237E);
  margin-bottom: 0.55rem;
}
.ac-bode-header span { flex: 1; }
.ac-detail-row {
  display: flex; justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  border-bottom: 1px dashed color-mix(in srgb, var(--evvy-border-color, #DEE2E6) 70%, transparent);
}
.ac-detail-row:last-child { border-bottom: none; }
.ac-detail-row span:last-child { font-weight: 700; }

/* Bode tabs */
.ac-bode-toggle { display: inline-flex; gap: 0.3rem; }
.ac-bode-tab {
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--evvy-border-color, #DEE2E6);
  background: transparent;
  border-radius: 0.4rem;
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--evvy-text-secondary, #777);
  cursor: pointer;
}
.ac-bode-tab.ac-active {
  background: var(--cluster-dark, #1A237E);
  color: var(--cluster-text, #fff);
  border-color: var(--cluster-dark, #1A237E);
}

.ac-bode-wrap {
  background: color-mix(in srgb, var(--cluster-dark, #1A237E) 4%, transparent);
  border-radius: 0.5rem;
  padding: 0.35rem;
  margin-top: 0.4rem;
}
#bode-plot {
  width: 100%;
  height: auto;
  aspect-ratio: 600 / 240;
}
.ac-bode-legend {
  display: flex; flex-wrap: wrap; gap: 1rem;
  margin-top: 0.45rem;
  font-size: 0.78rem;
  color: var(--evvy-text-secondary, #777);
}
.ac-bode-legend strong {
  color: var(--cluster-dark, #1A237E);
  font-variant-numeric: tabular-nums;
}

[data-bs-theme="dark"] .ac-detail-card,
[data-bs-theme="dark"] .ac-bode-card {
  background: color-mix(in srgb, var(--cluster-dark, #1A237E) 6%, #1a1a1a);
}
[data-bs-theme="dark"] .ac-bode-wrap {
  background: color-mix(in srgb, var(--cluster-dark, #1A237E) 14%, #1a1a1a);
}

/* Pro blocks */
.ac-pro-block {
  margin-top: 1.1rem;
  padding: 1rem 1.15rem;
  border-radius: 0.85rem;
  border: 1px solid color-mix(in srgb, var(--cluster-dark, #1A237E) 14%, transparent);
  background: var(--bs-body-bg, #fff);
}
.ac-pro-header {
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--cluster-dark, #1A237E);
  margin-bottom: 0.6rem;
}
.ac-pro-tease {
  padding: 0.85rem 1rem;
  background: var(--cluster-surface, #E8EAF6);
  border-radius: 0.65rem;
  font-size: 0.85rem; text-align: center; line-height: 1.55;
  color: var(--evvy-text-secondary, #555);
}
.ac-pro-tease i.bi-lock-fill { display: block; font-size: 1.25rem; margin-bottom: 0.3rem; color: var(--evvy-subscriber-color, #b97a30); }
.ac-pro-tease .evvy-premium-badge { display: inline-block; margin-top: 0.45rem; text-decoration: none; }
[data-bs-theme="dark"] .ac-pro-block { background: color-mix(in srgb, var(--cluster-dark, #1A237E) 6%, #1a1a1a); }
[data-bs-theme="dark"] .ac-pro-tease { background: color-mix(in srgb, var(--cluster-dark, #1A237E) 14%, #1a1a1a); }

/* Sensitivity stats */
.ac-sens-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}
@media (max-width: 575.98px) { .ac-sens-stats { grid-template-columns: 1fr; } }
.ac-sens-stats > div {
  background: color-mix(in srgb, var(--cluster-dark, #1A237E) 6%, transparent);
  padding: 0.55rem 0.75rem;
  border-radius: 0.55rem;
  font-size: 0.78rem;
  color: var(--evvy-text-secondary, #555);
}
.ac-sens-stats > div span { display: block; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 700; margin-bottom: 0.2rem; font-size: 0.68rem; }
.ac-sens-stats > div strong {
  font-size: 0.9rem; color: var(--cluster-dark, #1A237E);
  font-variant-numeric: tabular-nums;
}

/* Snap row */
.ac-snap-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.55rem;
}
@media (max-width: 575.98px) { .ac-snap-row { grid-template-columns: 1fr; } }
.ac-snap-cell {
  background: color-mix(in srgb, var(--cluster-dark, #1A237E) 6%, transparent);
  padding: 0.65rem 0.75rem;
  border-radius: 0.55rem;
  text-align: center;
}
.ac-snap-cell span {
  display: block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
  font-weight: 700; color: var(--evvy-text-secondary, #777);
}
.ac-snap-cell strong {
  display: block; font-size: 1.05rem; color: var(--cluster-dark, #1A237E);
  font-variant-numeric: tabular-nums;
  margin: 0.15rem 0;
}
.ac-snap-cell small {
  display: block; font-size: 0.7rem; color: var(--evvy-text-secondary, #777);
}
.ac-snap-series-row {
  grid-column: 1 / -1;
  display: flex; gap: 0.4rem; justify-content: center;
  margin-top: 0.4rem;
}
.ac-series-chip {
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--evvy-border-color, #DEE2E6);
  background: transparent;
  border-radius: 0.45rem;
  font-size: 0.75rem; font-weight: 700;
  color: var(--evvy-text-secondary, #777);
  cursor: pointer;
}
.ac-series-chip.ac-series-active {
  background: var(--cluster-dark, #1A237E);
  color: var(--cluster-text, #fff);
  border-color: var(--cluster-dark, #1A237E);
}