.tg {
  --tg-paper: #f5f0eb;
  --tg-paper-dark: #0c0c0e;
  --tg-surface: #fff;
  --tg-surface-dark: #151518;
  --tg-card: #faf8f5;
  --tg-card-dark: #1a1a20;
  --tg-border: #e5ddd4;
  --tg-border-dark: #2a2a35;
  --tg-ink: #292524;
  --tg-ink-dark: #e4e4e7;
  --tg-ink-muted: #8a8078;
  --tg-ink-muted-dark: #6b7280;
  --tg-ink-faint: #c5bdb4;
  --tg-ink-faint-dark: #3f3f4a;
  --tg-accent-rust: #b91c1c;
  --tg-accent-rust-dark: #ef4444;
  --tg-accent-teal: #0d9488;
  --tg-accent-teal-dark: #2dd4bf;
  --tg-accent-bond: #059669;
  --tg-accent-bond-dark: #22c55e;
  --tg-accent-bond-glow: rgba(5, 150, 105, 0.15);
  --tg-accent-bond-glow-dark: rgba(34, 197, 94, 0.2);
  --tg-accent-warn: #dc2626;
  --tg-accent-warn-dark: #f87171;
  --tg-grid: #e5ddd4;
  --tg-grid-dark: #1f1f28;
  --tg-shape-a: #dc2626;
  --tg-shape-a-dark: #ef4444;
  --tg-shape-b: #b91c1c;
  --tg-shape-b-dark: #dc2626;
  --tg-fiber: #fca5a5;
  --tg-fiber-dark: #7f1d1d;
  --tg-denatured: #9ca3af;
  --tg-shadow: rgba(0, 0, 0, 0.04);
  --tg-shadow-dark: rgba(0, 0, 0, 0.4);
  --tg-white: #fff;

  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  
}

.tg-bench {
  position: relative;
  width: 100%;
  max-width: 1240px;
  background: var(--tg-paper);
  border: 1px solid var(--tg-border);
  border-radius: 4px;
  padding: 2px;
  box-shadow: 0 4px 24px var(--tg-shadow);
}

.theme-dark .tg-bench {
  background: var(--tg-paper-dark);
  border-color: var(--tg-border-dark);
  box-shadow: 0 4px 24px var(--tg-shadow-dark);
}

.tg-bench-inner {
  position: relative;
  background: var(--tg-surface);
  border: 1px solid var(--tg-border);
  border-radius: 2px;
  padding: 2.5rem 2rem;
}

.theme-dark .tg-bench-inner {
  background: var(--tg-surface-dark);
  border-color: var(--tg-border-dark);
}

.tg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--tg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--tg-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.3;
  pointer-events: none;
}

.theme-dark .tg-grid {
  background-image:
    linear-gradient(var(--tg-grid-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--tg-grid-dark) 1px, transparent 1px);
}

.tg-header {
  position: relative;
  z-index: 2;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--tg-accent-rust);
}

.theme-dark .tg-header {
  border-bottom-color: var(--tg-accent-rust-dark);
}

.tg-header-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--tg-ink);
  letter-spacing: 0.04em;
  margin: 0;
}

.theme-dark .tg-header-title {
  color: var(--tg-ink-dark);
}

.tg-header-sub {
  font-size: 0.6rem;
  color: var(--tg-ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0.15rem 0 0;
}

.theme-dark .tg-header-sub {
  color: var(--tg-ink-muted-dark);
}

.tg-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 280px 1fr 240px;
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .tg-layout {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

/* ===== SPECIMEN SHEET (Controls) ===== */
.tg-specimen {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--tg-border);
  border: 1px solid var(--tg-border);
}

.theme-dark .tg-specimen {
  background: var(--tg-border-dark);
  border-color: var(--tg-border-dark);
}

.tg-specimen-header {
  background: var(--tg-card);
  padding: 0.6rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-dark .tg-specimen-header {
  background: var(--tg-card-dark);
}

.tg-specimen-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tg-accent-rust);
  flex-shrink: 0;
}

.theme-dark .tg-specimen-dot {
  background: var(--tg-accent-rust-dark);
}

.tg-specimen-label {
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--tg-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.theme-dark .tg-specimen-label {
  color: var(--tg-ink-muted-dark);
}

.tg-specimen-body {
  background: var(--tg-card);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.theme-dark .tg-specimen-body {
  background: var(--tg-card-dark);
}

.tg-field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.tg-field-label {
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--tg-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.theme-dark .tg-field-label {
  color: var(--tg-ink-muted-dark);
}

.tg-toggle-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--tg-border);
  padding: 2px;
}

.theme-dark .tg-toggle-group {
  background: var(--tg-border-dark);
}

.tg-toggle {
  background: var(--tg-card);
  border: none;
  color: var(--tg-ink-muted);
  padding: 0.4rem 0.3rem;
  font-size: 0.6rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
  letter-spacing: 0.02em;
}

.theme-dark .tg-toggle {
  background: var(--tg-card-dark);
  color: var(--tg-ink-muted-dark);
}

.tg-toggle:hover {
  background: var(--tg-accent-bond-glow);
}

.theme-dark .tg-toggle:hover {
  background: var(--tg-accent-bond-glow-dark);
}

.tg-toggle.active {
  background: var(--tg-accent-rust);
  color: var(--tg-white, #fff);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.15);
}

.theme-dark .tg-toggle.active {
  background: var(--tg-accent-rust-dark);
}

.tg-input {
  background: var(--tg-surface);
  border: 1px solid var(--tg-border);
  border-radius: 2px;
  color: var(--tg-ink);
  padding: 0.45rem 0.6rem;
  font-size: 0.75rem;
  width: 100%;
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.15s;
}

.theme-dark .tg-input {
  background: var(--tg-surface-dark);
  border-color: var(--tg-border-dark);
  color: var(--tg-ink-dark);
}

.tg-input:focus {
  border-color: var(--tg-accent-teal);
  box-shadow: 0 0 0 1px var(--tg-accent-teal);
}

.theme-dark .tg-input:focus {
  border-color: var(--tg-accent-teal-dark);
  box-shadow: 0 0 0 1px var(--tg-accent-teal-dark);
}

.tg-select {
  background: var(--tg-surface);
  border: 1px solid var(--tg-border);
  border-radius: 2px;
  color: var(--tg-ink);
  padding: 0.45rem 0.6rem;
  font-size: 0.65rem;
  width: 100%;
  box-sizing: border-box;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='4'%3E%3Cpath d='M1 1l3 3 3-3' fill='none' stroke='%238a8078' stroke-width='1.2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.theme-dark .tg-select {
  background: var(--tg-surface-dark);
  border-color: var(--tg-border-dark);
  color: var(--tg-ink-dark);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='4'%3E%3Cpath d='M1 1l3 3 3-3' fill='none' stroke='%236b7280' stroke-width='1.2'/%3E%3C/svg%3E");
}

.tg-select:focus {
  border-color: var(--tg-accent-teal);
  box-shadow: 0 0 0 1px var(--tg-accent-teal);
}

.theme-dark .tg-select:focus {
  border-color: var(--tg-accent-teal-dark);
  box-shadow: 0 0 0 1px var(--tg-accent-teal-dark);
}

/* ===== TISSUE VISUALIZER ===== */
.tg-visualizer {
  display: flex;
  flex-direction: column;
  background: var(--tg-card);
  border: 1px solid var(--tg-border);
}

.theme-dark .tg-visualizer {
  background: var(--tg-card-dark);
  border-color: var(--tg-border-dark);
}

.tg-visualizer-header {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--tg-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.theme-dark .tg-visualizer-header {
  border-bottom-color: var(--tg-border-dark);
}

.tg-visualizer-label {
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--tg-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.theme-dark .tg-visualizer-label {
  color: var(--tg-ink-muted-dark);
}

.tg-visualizer-status {
  font-size: 0.5rem;
  color: var(--tg-ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.theme-dark .tg-visualizer-status {
  color: var(--tg-ink-faint-dark);
}

.tg-visualizer-body {
  padding: 1rem;
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex: 1;
  min-height: 280px;
  gap: 0.75rem;
}

.tg-visualizer-svg {
  flex: 1;
  max-width: 480px;
  height: auto;
  min-height: 240px;
}

/* ===== Temperature Bar (HTML) ===== */
.tg-temp-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  flex-shrink: 0;
  width: 40px;
  padding: 0.25rem 0;
}

.tg-temp-bar-label {
  font-size: 0.5rem;
  font-weight: 700;
  color: var(--tg-ink-muted);
  letter-spacing: 0.1em;
}

.theme-dark .tg-temp-bar-label {
  color: var(--tg-ink-muted-dark);
}

.tg-temp-bar-track {
  position: relative;
  width: 8px;
  flex: 1;
  min-height: 180px;
  background: var(--tg-border);
  border-radius: 4px;
  overflow: hidden;
}

.theme-dark .tg-temp-bar-track {
  background: var(--tg-border-dark);
}

.tg-temp-bar-fill {
  position: absolute;
  left: 0;
  right: 0;
  border-radius: 4px;
  background: var(--tg-accent-teal);
  transition: height 0.3s, background 0.3s, bottom 0.3s;
}

.theme-dark .tg-temp-bar-fill {
  background: var(--tg-accent-teal-dark);
}

.tg-temp-bar-fill.warm { background: #f59e0b; }
.tg-temp-bar-fill.hot { background: var(--tg-accent-warn); }
.theme-dark .tg-temp-bar-fill.warm { background: #fbbf24; }
.theme-dark .tg-temp-bar-fill.hot { background: var(--tg-accent-warn-dark); }

.tg-temp-bar-tick {
  position: absolute;
  left: 12px;
  transform: translateY(50%);
  pointer-events: none;
}

.tg-temp-bar-tick span {
  font-size: 0.5rem;
  color: var(--tg-ink-faint);
  white-space: nowrap;
  
}

.theme-dark .tg-temp-bar-tick span {
  color: var(--tg-ink-faint-dark);
}

.tg-temp-bar-value {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--tg-ink);
  text-align: center;
  
}

.theme-dark .tg-temp-bar-value {
  color: var(--tg-ink-dark);
}
.tg-report {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--tg-border);
  border: 1px solid var(--tg-border);
}

.theme-dark .tg-report {
  background: var(--tg-border-dark);
  border-color: var(--tg-border-dark);
}

.tg-report-header {
  background: var(--tg-card);
  padding: 0.6rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-dark .tg-report-header {
  background: var(--tg-card-dark);
}

.tg-report-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tg-accent-teal);
  flex-shrink: 0;
}

.theme-dark .tg-report-dot {
  background: var(--tg-accent-teal-dark);
}

.tg-report-label {
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--tg-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.theme-dark .tg-report-label {
  color: var(--tg-ink-muted-dark);
}

.tg-report-body {
  background: var(--tg-card);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.theme-dark .tg-report-body {
  background: var(--tg-card-dark);
}

.tg-measurement {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.3rem 0;
  border-bottom: 1px dotted var(--tg-border);
}

.theme-dark .tg-measurement {
  border-bottom-color: var(--tg-border-dark);
}

.tg-measurement:last-child {
  border-bottom: none;
}

.tg-measurement-label {
  font-size: 0.55rem;
  color: var(--tg-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.theme-dark .tg-measurement-label {
  color: var(--tg-ink-muted-dark);
}

.tg-measurement-value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--tg-ink);
  font-variant-numeric: tabular-nums;
}

.theme-dark .tg-measurement-value {
  color: var(--tg-ink-dark);
}

.tg-measurement-value .tg-unit {
  font-size: 0.55rem;
  font-weight: 500;
  color: var(--tg-ink-muted);
  margin-left: 0.15rem;
}

.theme-dark .tg-measurement-value .tg-unit {
  color: var(--tg-ink-muted-dark);
}

.tg-incubation-badge {
  background: var(--tg-accent-bond-glow);
  border: 1px solid var(--tg-accent-bond);
  border-radius: 2px;
  padding: 0.5rem 0.65rem;
  text-align: center;
  margin-top: 0.3rem;
}

.theme-dark .tg-incubation-badge {
  background: var(--tg-accent-bond-glow-dark);
  border-color: var(--tg-accent-bond-dark);
}

.tg-incubation-badge-label {
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tg-accent-bond);
  margin-bottom: 0.1rem;
}

.theme-dark .tg-incubation-badge-label {
  color: var(--tg-accent-bond-dark);
}

.tg-incubation-badge-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--tg-ink);
}

.theme-dark .tg-incubation-badge-value {
  color: var(--tg-ink-dark);
}

.tg-alert {
  background: #fef2f2;
  border: 1px solid var(--tg-accent-warn);
  border-radius: 2px;
  padding: 0.6rem;
  text-align: center;
}

.theme-dark .tg-alert {
  background: rgba(220, 38, 38, 0.08);
  border-color: var(--tg-accent-warn-dark);
}

.tg-alert-text {
  font-size: 0.6rem;
  color: var(--tg-accent-warn);
  line-height: 1.4;
  margin: 0;
}

.theme-dark .tg-alert-text {
  color: var(--tg-accent-warn-dark);
}

/* ===== ANNOTATION (method description) ===== */
.tg-annotation {
  background: var(--tg-card);
  border: 1px solid var(--tg-border);
  padding: 0.65rem 0.85rem;
  margin-top: 1px;
}

.theme-dark .tg-annotation {
  background: var(--tg-card-dark);
  border-color: var(--tg-border-dark);
}

.tg-annotation-text {
  font-size: 0.6rem;
  color: var(--tg-ink-muted);
  line-height: 1.5;
  margin: 0;
}

.theme-dark .tg-annotation-text {
  color: var(--tg-ink-muted-dark);
}

/* ===== SVG Tissue Styles ===== */
.tg-tissue-a { fill: var(--tg-tissue-a-current, var(--tg-shape-a)); }
.tg-tissue-b { fill: var(--tg-tissue-b-current, var(--tg-shape-b)); }
.theme-dark .tg-tissue-a { fill: var(--tg-tissue-a-current, var(--tg-shape-a-dark)); }
.theme-dark .tg-tissue-b { fill: var(--tg-tissue-b-current, var(--tg-shape-b-dark)); }

.tg-fiber {
  stroke: var(--tg-fiber-current, var(--tg-fiber));
  fill: none;
}
.theme-dark .tg-fiber {
  stroke: var(--tg-fiber-current, var(--tg-fiber-dark));
}

.tg-bond-line {
  stroke: var(--tg-accent-bond);
  stroke-width: 1.5;
  fill: none;
  opacity: 0;
  transition: opacity 0.4s;
}

.theme-dark .tg-bond-line {
  stroke: var(--tg-accent-bond-dark);
}

.tg-bond-line.active {
  opacity: 0.7;
  animation: tg-bond-pulse 2s ease-in-out infinite;
}

@keyframes tg-bond-pulse {
  0%, 100% {
    stroke-dashoffset: 0;
    opacity: 0.4;
  }
  50% {
    stroke-dashoffset: -8;
    opacity: 0.9;
  }
}

.tg-bond-node {
  fill: var(--tg-accent-bond);
  opacity: 0;
  transition: opacity 0.4s;
}

.theme-dark .tg-bond-node {
  fill: var(--tg-accent-bond-dark);
}

.tg-bond-node.active {
  animation: tg-node-glow 1.5s ease-in-out infinite;
}

@keyframes tg-node-glow {
  0%, 100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
  }
}

.tg-particle {
  fill: var(--tg-accent-bond);
  opacity: 0;
}

.theme-dark .tg-particle {
  fill: var(--tg-accent-bond-dark);
}

.tg-particle.active {
  animation: tg-particle-drift 3s ease-in-out infinite;
}

@keyframes tg-particle-drift {
  0% {
    opacity: 0;
    transform: translateX(0);
  }
  10% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    opacity: 0;
    transform: translateX(60px);
  }
}

.tg-denatured-overlay {
  fill: var(--tg-denatured);
  opacity: 0;
  transition: opacity 0.5s;
}

.tg-denatured-overlay.active {
  opacity: 0.6;
}