#sf-circuit-lab {
  position: fixed;
  top: 16px;
  right: 16px;
  bottom: 72px;
  z-index: 1000;
  width: min(390px, calc(100vw - 32px));
  overflow: auto;
  padding: 18px;
  border: 1px solid rgba(39, 29, 12, 0.26);
  border-radius: 18px;
  background: rgba(250, 242, 218, 0.97);
  color: #241a0d;
  box-shadow: 0 26px 72px rgba(44, 29, 8, 0.3);
  backdrop-filter: blur(16px);
}

#sf-circuit-lab[hidden] {
  display: none;
}

.sf-lab-title {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.sf-lab-subtitle {
  margin: 0 0 16px;
  color: rgba(36, 26, 13, 0.68);
  font-size: 0.78rem;
  line-height: 1.45;
}

.sf-lab-section {
  margin: 12px 0;
  border: 1px solid rgba(39, 29, 12, 0.16);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

.sf-lab-section summary {
  padding: 11px 12px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.02em;
}

.sf-lab-section-inner {
  padding: 0 12px 12px;
}

.sf-lab-control {
  margin: 12px 0;
}

.sf-lab-control label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  font-size: 0.79rem;
  font-weight: 760;
}

.sf-lab-control output {
  color: rgba(36, 26, 13, 0.62);
  font-variant-numeric: tabular-nums;
}

.sf-lab-control input[type="range"],
.sf-lab-control select {
  width: 100%;
}

.sf-lab-control input[type="range"] {
  accent-color: #735621;
}

.sf-lab-control select {
  border: 1px solid rgba(39, 29, 12, 0.22);
  border-radius: 8px;
  padding: 8px 9px;
  background: rgba(255,255,255,0.42);
  color: #241a0d;
  font: inherit;
  font-size: 0.8rem;
}

.sf-lab-color-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.sf-lab-color {
  min-width: 0;
}

.sf-lab-color label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.72rem;
  font-weight: 760;
}

.sf-lab-color input {
  width: 100%;
  height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
}

.sf-lab-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.sf-lab-actions button {
  border: 1px solid rgba(39, 29, 12, 0.22);
  border-radius: 9px;
  padding: 9px 10px;
  background: rgba(255,255,255,0.34);
  color: #241a0d;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 820;
  cursor: pointer;
}

.sf-lab-status {
  margin-top: 10px;
  min-height: 1.2em;
  color: rgba(36, 26, 13, 0.65);
  font-size: 0.72rem;
  line-height: 1.35;
}

.sf-lab-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 720;
}

@media (max-width: 640px) {
  #sf-circuit-lab {
    top: auto;
    left: 10px;
    right: 10px;
    bottom: 66px;
    width: auto;
    max-height: 72vh;
  }

  
  .sf-lab-section[data-advanced="true"] {
    display: none;
  }
}

.sf-lab-close { width:100%; margin:0 0 12px; border:1px solid rgba(39,29,12,.22); border-radius:9px; padding:9px 10px; background:rgba(255,255,255,.34); color:#241a0d; font:inherit; font-size:.78rem; font-weight:850; cursor:pointer; }
body.circuit-lab-open { overflow:hidden; }
@media (max-width:640px) { #sf-circuit-lab { bottom:10px; } }