/* ============================================================
   1×8 DEMULTIPLEXER Virtual Laboratory — Style Sheet
   Virtual Instrumentation Labs Interactive Learning Platform
   ============================================================ */

/* ── Reset & Base Variables ────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Laboratory Colour Palette */
  --lab-bg:           #f8fafc;
  --panel-bg:         #ffffff;
  --panel-border:     #e2e8f0;
  --header-bg:        #1a2744;
  --header-text:      #ffffff;
  --accent:           #2563eb;
  --accent-light:     #dbeafe;
  --accent-dark:      #1d4ed8;
  --text-primary:     #0f172a;
  --text-secondary:   #475569;
  --text-muted:       #94a3b8;
  --success:          #16a34a;
  --danger:           #dc2626;
  --wire-off:         #cbd5e1;
  --wire-on:          #22c55e;
  --wire-sel:         #3b82f6;
  --led-off:          #94a3b8;
  --led-on:           #22c55e;
  --led-glow:         rgba(34, 197, 94, 0.5);
  --switch-track-off: #cbd5e1;
  --switch-track-on:  #2563eb;
  --switch-knob:      #ffffff;
  --gate-fill:        #f1f5f9;
  --gate-stroke:      #1a2744;
  --shadow-sm:        0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:        0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg:        0 10px 25px rgba(0,0,0,0.12);
  --radius:           8px;
  --radius-lg:        12px;
  --font-sans:        'Segoe UI', 'Inter', -apple-system, sans-serif;
  --font-mono:        'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--lab-bg);
  background-image: none !important;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Laboratory Title Bar ──────────────────────────────────── */
.lab-title-bar {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.22);
}

.lab-title-bar h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.8px;
}

.lab-title-bar .lab-subtitle {
  font-size: 0.82rem;
  color: #94a3b8;
  font-weight: 500;
}

.lab-badge {
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  padding: 5px 14px;
  border-radius: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ── Main Workspace Layout ─────────────────────────────────── */
.lab-main {
  display: grid;
  grid-template-columns: 280px 1fr 340px;
  gap: 20px;
  padding: 20px 24px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
  flex: 1;
}

@media (max-width: 1280px) {
  .lab-main {
    grid-template-columns: 280px 1fr;
  }
  .lab-main > *:nth-child(3) {
    grid-column: span 2;
  }
}

@media (max-width: 900px) {
  .lab-main {
    grid-template-columns: 1fr;
  }
  .lab-main > *:nth-child(3) {
    grid-column: span 1;
  }
}

/* ── Lab Panel Base ────────────────────────────────────────── */
.lab-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.lab-panel__header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 12px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.lab-panel__header-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lab-panel__body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

/* ── Controls Sidebar ──────────────────────────────────────── */
.control-group-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--panel-border);
  margin-top: 4px;
}

.toggle-switch-card {
  background: #f8fafc;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s ease;
}

.toggle-switch-card:hover {
  border-color: #cbd5e1;
  background: #f1f5f9;
}

.toggle-label-group {
  display: flex;
  flex-direction: column;
}

.toggle-label-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.toggle-label-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--switch-track-off);
  transition: .25s ease;
  border-radius: 24px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--switch-knob);
  transition: .25s ease;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

input:checked + .toggle-slider {
  background-color: var(--switch-track-on);
}

input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

.input-state-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  min-width: 32px;
  text-align: center;
}

.input-state-badge.state-0 {
  background: #e2e8f0;
  color: #64748b;
}

.input-state-badge.state-1 {
  background: #dbeafe;
  color: #1d4ed8;
}

/* Mode Tabs */
.mode-tab-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: #f1f5f9;
  padding: 4px;
  border-radius: var(--radius);
}

.mode-tab {
  padding: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-tab.active {
  background: #ffffff;
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Action Buttons */
.btn-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn {
  padding: 9px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  background: #ffffff;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

.btn--primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent-dark);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--danger {
  background: #fff;
  color: var(--danger);
  border-color: #fca5a5;
}

.btn--danger:hover {
  background: #fef2f2;
}

.slider-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Central Circuit Workspace ─────────────────────────────── */
.view-switcher-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f8fafc;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
}

.view-btn-group {
  display: flex;
  gap: 6px;
}

.view-btn {
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--panel-border);
  background: #ffffff;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-btn.active {
  background: var(--header-bg);
  color: #ffffff;
  border-color: var(--header-bg);
}

.circuit-canvas-wrapper {
  background: #ffffff;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  position: relative;
  overflow: auto;
  min-height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: none !important;
}

.circuit-canvas-wrapper svg {
  width: 100%;
  height: 100%;
  min-width: 640px;
  display: block;
}

/* SVG Circuit Styling */
.svg-bg-rect { fill: transparent; }

.svg-wire {
  fill: none;
  stroke: var(--wire-off);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.3s ease, stroke-width 0.3s ease;
}

.svg-wire.active {
  stroke: var(--wire-on);
  stroke-width: 3.5;
  filter: drop-shadow(0 0 3px rgba(34, 197, 94, 0.4));
}

.svg-wire.wire-select {
  stroke: #94a3b8;
  stroke-width: 2.5;
}

.svg-wire.wire-select.active {
  stroke: #3b82f6;
  stroke-width: 3.5;
  filter: drop-shadow(0 0 3px rgba(59, 130, 246, 0.4));
}

.svg-demux-box {
  fill: #f8fafc;
  stroke: var(--header-bg);
  stroke-width: 2.5;
  rx: 8px;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.05));
}

.svg-gate {
  fill: #f1f5f9;
  stroke: var(--header-bg);
  stroke-width: 2;
  transition: fill 0.3s ease, stroke 0.3s ease;
}

.svg-gate.active {
  fill: #dcfce7;
  stroke: #16a34a;
  stroke-width: 2.5;
}

.svg-text-title {
  font-family: var(--font-sans);
  font-weight: 700;
  fill: var(--header-bg);
}

.svg-text-sub {
  font-family: var(--font-sans);
  font-size: 11px;
  fill: var(--text-secondary);
}

.svg-text-pin {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  fill: var(--text-secondary);
}

.svg-led-off {
  fill: var(--led-off);
  stroke: #64748b;
  stroke-width: 1.5;
  transition: fill 0.3s ease, filter 0.3s ease;
}

.svg-led-on {
  fill: var(--led-on);
  stroke: #15803d;
  stroke-width: 2;
  filter: drop-shadow(0 0 6px var(--led-glow));
}

/* Animated Pulse along Active Wires */
@keyframes wirePulse {
  0% { stroke-dashoffset: 40; }
  100% { stroke-dashoffset: 0; }
}

.svg-wire-pulse {
  fill: none;
  stroke: #4ade80;
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-dasharray: 8, 12;
  animation: wirePulse 0.8s linear infinite;
  opacity: 0;
  pointer-events: none;
}

.svg-wire-pulse.active {
  opacity: 1;
}

/* ── Operation Banner ──────────────────────────────────────── */
.op-banner {
  background: #0f172a;
  color: #ffffff;
  padding: 12px 18px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-left: 5px solid var(--accent);
  box-shadow: var(--shadow-sm);
}

.op-state-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #38bdf8;
}

.op-desc-text {
  font-size: 0.78rem;
  color: #94a3b8;
}

/* ── Output & Vector Monitor Sidebar ───────────────────────── */
.output-hero-card {
  background: linear-gradient(135deg, #1a2744 0%, #0f172a 100%);
  color: #ffffff;
  padding: 16px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-md);
}

.output-hero-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.output-hero-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #94a3b8;
  font-weight: 600;
}

.output-hero-val {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: #4ade80;
  text-shadow: 0 0 10px rgba(74, 222, 128, 0.4);
}

.select-hero-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: #60a5fa;
  background: rgba(255,255,255,0.08);
  padding: 2px 10px;
  border-radius: 6px;
}

.vector-card {
  background: #f8fafc;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vector-bits-container {
  display: flex;
  justify-content: space-between;
  gap: 4px;
}

.vector-bit-box {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #ffffff;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 6px 2px;
  transition: all 0.2s ease;
}

.vector-bit-box.selected {
  border-color: #2563eb;
  background: #eff6ff;
}

.vector-bit-box.active-high {
  border-color: #22c55e;
  background: #f0fdf4;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.2);
}

.vector-bit-name {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.vector-bit-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-muted);
}

.vector-bit-box.active-high .vector-bit-val {
  color: #16a34a;
}

/* 8 Output LED Indicators List */
.output-led-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.output-led-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius);
  background: #f8fafc;
  border: 1px solid var(--panel-border);
  transition: all 0.2s ease;
}

.output-led-item.selected {
  border-color: #93c5fd;
  background: #f0f9ff;
}

.output-led-item.active-high {
  border-color: #86efac;
  background: #f0fdf4;
}

.led-indicator-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--led-off);
  transition: all 0.3s ease;
}

.led-indicator-dot.active {
  background: var(--led-on);
  box-shadow: 0 0 10px var(--led-glow);
}

.output-item-label {
  font-weight: 700;
  font-size: 0.85rem;
  width: 32px;
}

.output-item-eq {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  flex: 1;
  text-align: center;
}

.output-item-state {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: #e2e8f0;
  color: #64748b;
}

.output-item-state.state-high {
  background: #dcfce7;
  color: #15803d;
}

/* ── Secondary Layout Sections (Truth Table & Educational) ── */
.lab-section-row {
  max-width: 1600px;
  margin: 0 auto 20px auto;
  padding: 0 24px;
  width: 100%;
}

.lab-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 900px) {
  .lab-grid-2col {
    grid-template-columns: 1fr;
  }
}

/* Truth Table */
.truth-table-wrapper {
  overflow-x: auto;
}

.truth-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
  text-align: center;
}

.truth-table th {
  background: #1a2744;
  color: #ffffff;
  padding: 10px;
  font-weight: 600;
  border: 1px solid #2d3748;
}

.truth-table td {
  padding: 8px 10px;
  border: 1px solid var(--panel-border);
  font-family: var(--font-mono);
}

.truth-table tbody tr:nth-child(even) {
  background: #f8fafc;
}

.truth-table tbody tr.active-row {
  background: #dbeafe !important;
  font-weight: 700;
  color: #1e40af;
  outline: 2px solid #2563eb;
}

/* Educational Cards */
.edu-card {
  background: #ffffff;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.edu-card h3 {
  font-size: 0.95rem;
  color: var(--header-bg);
  border-bottom: 2px solid var(--accent-light);
  padding-bottom: 6px;
}

.edu-card p, .edu-card ul {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.edu-card ul {
  padding-left: 20px;
}

.edu-card li {
  margin-bottom: 4px;
}

/* MUX vs DEMUX Table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  margin-top: 8px;
}

.compare-table th {
  background: #f1f5f9;
  color: var(--text-primary);
  padding: 8px;
  border: 1px solid var(--panel-border);
}

.compare-table td {
  padding: 8px;
  border: 1px solid var(--panel-border);
}

/* Footer */
.lab-footer {
  background: var(--header-bg);
  color: #94a3b8;
  text-align: center;
  padding: 16px;
  font-size: 0.78rem;
  margin-top: auto;
}

/* ============================================================
   DARK & LIGHT THEME OVERRIDES — 1×8 Demultiplexer
   ============================================================ */

/* ── 1. DARK THEME ── */
:root[data-theme="dark"],
[data-theme="dark"],
html[data-theme="dark"],
html.dark {
  --lab-bg: #080d18;
  --panel-bg: #0c1220;
  --panel-border: #1e293b;
  --header-bg: #111a2e;
  --header-text: #f8fafc;
  --accent: #38bdf8;
  --accent-light: rgba(56, 189, 248, 0.15);
  --accent-dark: #0284c7;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --wire-off: #334155;
  --wire-on: #22c55e;
  --wire-sel: #38bdf8;
  --led-off: #334155;
  --led-on: #22c55e;
  --gate-fill: #111a2e;
  --gate-stroke: #38bdf8;
}

[data-theme="dark"] body,
html[data-theme="dark"] body,
html.dark body {
  background-color: #080d18 !important;
  background-image: none !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .lab-title-bar,
html[data-theme="dark"] .lab-title-bar,
html.dark .lab-title-bar {
  background: #0c1220 !important;
  color: #f8fafc !important;
  border-bottom: 1px solid #1e293b !important;
}

[data-theme="dark"] .lab-title-bar h1,
html[data-theme="dark"] .lab-title-bar h1,
html.dark .lab-title-bar h1 {
  color: #f8fafc !important;
}

[data-theme="dark"] .lab-title-bar .lab-subtitle,
html[data-theme="dark"] .lab-title-bar .lab-subtitle,
html.dark .lab-title-bar .lab-subtitle {
  color: #94a3b8 !important;
}

[data-theme="dark"] .lab-badge,
html[data-theme="dark"] .lab-badge,
html.dark .lab-badge {
  background: #0284c7 !important;
  color: #ffffff !important;
}

[data-theme="dark"] .lab-panel,
html[data-theme="dark"] .lab-panel,
html.dark .lab-panel {
  background: #0c1220 !important;
  border-color: #1e293b !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4) !important;
}

[data-theme="dark"] .lab-panel__header,
html[data-theme="dark"] .lab-panel__header,
html.dark .lab-panel__header {
  background: #111a2e !important;
  color: #f8fafc !important;
  border-bottom: 1px solid #1e293b !important;
}

[data-theme="dark"] .control-group-title,
html[data-theme="dark"] .control-group-title,
html.dark .control-group-title {
  color: #94a3b8 !important;
  border-bottom-color: #1e293b !important;
}

[data-theme="dark"] .toggle-switch-card,
html[data-theme="dark"] .toggle-switch-card,
html.dark .toggle-switch-card {
  background: #111a2e !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .toggle-switch-card:hover,
html[data-theme="dark"] .toggle-switch-card:hover,
html.dark .toggle-switch-card:hover {
  border-color: #38bdf8 !important;
  background: #17233d !important;
}

[data-theme="dark"] .toggle-label-name,
html[data-theme="dark"] .toggle-label-name,
html.dark .toggle-label-name {
  color: #f8fafc !important;
}

[data-theme="dark"] .toggle-label-desc,
html[data-theme="dark"] .toggle-label-desc,
html.dark .toggle-label-desc {
  color: #64748b !important;
}

[data-theme="dark"] .input-state-badge.state-0,
html[data-theme="dark"] .input-state-badge.state-0,
html.dark .input-state-badge.state-0 {
  background: #1e293b !important;
  color: #94a3b8 !important;
}

[data-theme="dark"] .input-state-badge.state-1,
html[data-theme="dark"] .input-state-badge.state-1,
html.dark .input-state-badge.state-1 {
  background: rgba(56, 189, 248, 0.2) !important;
  color: #38bdf8 !important;
}

[data-theme="dark"] .mode-tab-group,
html[data-theme="dark"] .mode-tab-group,
html.dark .mode-tab-group {
  background: #080d18 !important;
}

[data-theme="dark"] .mode-tab,
html[data-theme="dark"] .mode-tab,
html.dark .mode-tab {
  color: #94a3b8 !important;
}

[data-theme="dark"] .mode-tab.active,
html[data-theme="dark"] .mode-tab.active,
html.dark .mode-tab.active {
  background: #0284c7 !important;
  color: #ffffff !important;
}

[data-theme="dark"] .btn,
html[data-theme="dark"] .btn,
html.dark .btn {
  background: #111a2e !important;
  color: #f8fafc !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .btn:hover,
html[data-theme="dark"] .btn:hover,
html.dark .btn:hover {
  background: #17233d !important;
  border-color: #38bdf8 !important;
}

[data-theme="dark"] .btn--primary,
html[data-theme="dark"] .btn--primary,
html.dark .btn--primary {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #38bdf8 !important;
}

[data-theme="dark"] .btn--danger,
html[data-theme="dark"] .btn--danger,
html.dark .btn--danger {
  background: #111a2e !important;
  color: #f87171 !important;
  border-color: rgba(239, 68, 68, 0.4) !important;
}

[data-theme="dark"] .btn--danger:hover,
html[data-theme="dark"] .btn--danger:hover,
html.dark .btn--danger:hover {
  background: rgba(239, 68, 68, 0.15) !important;
}

[data-theme="dark"] .slider-header,
html[data-theme="dark"] .slider-header,
html.dark .slider-header {
  color: #94a3b8 !important;
}

/* Dark Schematic & SVG */
[data-theme="dark"] .view-switcher-bar,
html[data-theme="dark"] .view-switcher-bar,
html.dark .view-switcher-bar {
  background: #111a2e !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .view-btn,
html[data-theme="dark"] .view-btn,
html.dark .view-btn {
  background: #080d18 !important;
  color: #94a3b8 !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .view-btn:hover,
html[data-theme="dark"] .view-btn:hover,
html.dark .view-btn:hover {
  background: #17233d !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .view-btn.active,
html[data-theme="dark"] .view-btn.active,
html.dark .view-btn.active {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #38bdf8 !important;
}

[data-theme="dark"] .circuit-canvas-wrapper,
html[data-theme="dark"] .circuit-canvas-wrapper,
html.dark .circuit-canvas-wrapper {
  background: #080d18 !important;
  background-image: none !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .svg-demux-box,
html[data-theme="dark"] .svg-demux-box,
html.dark .svg-demux-box {
  fill: #111a2e !important;
  stroke: #38bdf8 !important;
  stroke-width: 2.5px !important;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5)) !important;
}

[data-theme="dark"] .svg-gate,
html[data-theme="dark"] .svg-gate,
html.dark .svg-gate {
  fill: #111a2e !important;
  stroke: #38bdf8 !important;
  stroke-width: 2px !important;
}

[data-theme="dark"] .svg-gate.active,
html[data-theme="dark"] .svg-gate.active,
html.dark .svg-gate.active {
  fill: rgba(34, 197, 94, 0.2) !important;
  stroke: #22c55e !important;
}

[data-theme="dark"] .svg-text-title,
html[data-theme="dark"] .svg-text-title,
html.dark .svg-text-title {
  fill: #f8fafc !important;
}

[data-theme="dark"] .svg-text-sub,
html[data-theme="dark"] .svg-text-sub,
html.dark .svg-text-sub {
  fill: #94a3b8 !important;
}

[data-theme="dark"] .svg-text-pin,
html[data-theme="dark"] .svg-text-pin,
html.dark .svg-text-pin {
  fill: #38bdf8 !important;
}

[data-theme="dark"] #fn-val-d,
html[data-theme="dark"] #fn-val-d,
html.dark #fn-val-d {
  fill: #4ade80 !important;
}

[data-theme="dark"] #fn-val-s0,
[data-theme="dark"] #fn-val-s1,
[data-theme="dark"] #fn-val-s2,
html[data-theme="dark"] #fn-val-s0,
html[data-theme="dark"] #fn-val-s1,
html[data-theme="dark"] #fn-val-s2,
html.dark #fn-val-s0,
html.dark #fn-val-s1,
html.dark #fn-val-s2 {
  fill: #38bdf8 !important;
}

[data-theme="dark"] .circuit-canvas-wrapper svg text,
html[data-theme="dark"] .circuit-canvas-wrapper svg text,
html.dark .circuit-canvas-wrapper svg text {
  fill: #f8fafc;
}

[data-theme="dark"] .circuit-canvas-wrapper svg .svg-text-sub,
html[data-theme="dark"] .circuit-canvas-wrapper svg .svg-text-sub,
html.dark .circuit-canvas-wrapper svg .svg-text-sub {
  fill: #94a3b8 !important;
}

[data-theme="dark"] .circuit-canvas-wrapper svg .svg-text-pin,
html[data-theme="dark"] .circuit-canvas-wrapper svg .svg-text-pin,
html.dark .circuit-canvas-wrapper svg .svg-text-pin {
  fill: #38bdf8 !important;
}

[data-theme="dark"] .svg-led-off,
html[data-theme="dark"] .svg-led-off,
html.dark .svg-led-off {
  fill: #334155 !important;
  stroke: #475569 !important;
}

[data-theme="dark"] .svg-wire,
html[data-theme="dark"] .svg-wire,
html.dark .svg-wire {
  stroke: #334155 !important;
}

[data-theme="dark"] .svg-wire.active,
html[data-theme="dark"] .svg-wire.active,
html.dark .svg-wire.active {
  stroke: #22c55e !important;
  filter: drop-shadow(0 0 4px rgba(34, 197, 94, 0.6)) !important;
}

[data-theme="dark"] .svg-wire.wire-select,
html[data-theme="dark"] .svg-wire.wire-select,
html.dark .svg-wire.wire-select {
  stroke: #475569 !important;
}

[data-theme="dark"] .svg-wire.wire-select.active,
html[data-theme="dark"] .svg-wire.wire-select.active,
html.dark .svg-wire.wire-select.active {
  stroke: #38bdf8 !important;
  filter: drop-shadow(0 0 4px rgba(56, 189, 248, 0.6)) !important;
}

/* Dark Operation Banner */
[data-theme="dark"] .op-banner,
html[data-theme="dark"] .op-banner,
html.dark .op-banner {
  background: #111a2e !important;
  border: 1px solid #1e293b !important;
  border-left: 5px solid #38bdf8 !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .op-state-text,
html[data-theme="dark"] .op-state-text,
html.dark .op-state-text {
  color: #38bdf8 !important;
}

[data-theme="dark"] .op-desc-text,
html[data-theme="dark"] .op-desc-text,
html.dark .op-desc-text {
  color: #94a3b8 !important;
}

/* Dark Right Column */
[data-theme="dark"] .output-hero-card,
html[data-theme="dark"] .output-hero-card,
html.dark .output-hero-card {
  background: linear-gradient(135deg, #111a2e 0%, #080d18 100%) !important;
  border: 1px solid #1e293b !important;
}

[data-theme="dark"] .output-hero-label,
html[data-theme="dark"] .output-hero-label,
html.dark .output-hero-label {
  color: #94a3b8 !important;
}

[data-theme="dark"] .output-hero-val,
html[data-theme="dark"] .output-hero-val,
html.dark .output-hero-val {
  color: #4ade80 !important;
}

[data-theme="dark"] .select-hero-val,
html[data-theme="dark"] .select-hero-val,
html.dark .select-hero-val {
  color: #38bdf8 !important;
  background: rgba(56, 189, 248, 0.15) !important;
}

[data-theme="dark"] .vector-card,
html[data-theme="dark"] .vector-card,
html.dark .vector-card {
  background: #111a2e !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .vector-bit-box,
html[data-theme="dark"] .vector-bit-box,
html.dark .vector-bit-box {
  background: #080d18 !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .vector-bit-box.selected,
html[data-theme="dark"] .vector-bit-box.selected,
html.dark .vector-bit-box.selected {
  border-color: #38bdf8 !important;
  background: rgba(56, 189, 248, 0.15) !important;
}

[data-theme="dark"] .vector-bit-box.active-high,
html[data-theme="dark"] .vector-bit-box.active-high,
html.dark .vector-bit-box.active-high {
  border-color: #22c55e !important;
  background: rgba(34, 197, 94, 0.15) !important;
}

[data-theme="dark"] .vector-bit-name,
html[data-theme="dark"] .vector-bit-name,
html.dark .vector-bit-name {
  color: #94a3b8 !important;
}

[data-theme="dark"] .vector-bit-val,
html[data-theme="dark"] .vector-bit-val,
html.dark .vector-bit-val {
  color: #64748b !important;
}

[data-theme="dark"] .vector-bit-box.active-high .vector-bit-val,
html[data-theme="dark"] .vector-bit-box.active-high .vector-bit-val,
html.dark .vector-bit-box.active-high .vector-bit-val {
  color: #4ade80 !important;
}

[data-theme="dark"] .output-led-item,
html[data-theme="dark"] .output-led-item,
html.dark .output-led-item {
  background: #111a2e !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .output-led-item.selected,
html[data-theme="dark"] .output-led-item.selected,
html.dark .output-led-item.selected {
  border-color: #38bdf8 !important;
  background: rgba(56, 189, 248, 0.1) !important;
}

[data-theme="dark"] .output-led-item.active-high,
html[data-theme="dark"] .output-led-item.active-high,
html.dark .output-led-item.active-high {
  border-color: #22c55e !important;
  background: rgba(34, 197, 94, 0.1) !important;
}

[data-theme="dark"] .output-item-label,
html[data-theme="dark"] .output-item-label,
html.dark .output-item-label {
  color: #f8fafc !important;
}

[data-theme="dark"] .output-item-eq,
html[data-theme="dark"] .output-item-eq,
html.dark .output-item-eq {
  color: #94a3b8 !important;
}

[data-theme="dark"] .output-item-state,
html[data-theme="dark"] .output-item-state,
html.dark .output-item-state {
  background: #1e293b !important;
  color: #94a3b8 !important;
}

[data-theme="dark"] .output-item-state.state-high,
html[data-theme="dark"] .output-item-state.state-high,
html.dark .output-item-state.state-high {
  background: rgba(34, 197, 94, 0.2) !important;
  color: #4ade80 !important;
}

/* Dark Truth Table & Theory */
[data-theme="dark"] .truth-table th,
html[data-theme="dark"] .truth-table th,
html.dark .truth-table th {
  background: #111a2e !important;
  color: #f8fafc !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .truth-table td,
html[data-theme="dark"] .truth-table td,
html.dark .truth-table td {
  border-color: #1e293b !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .truth-table tbody tr:nth-child(even),
html[data-theme="dark"] .truth-table tbody tr:nth-child(even),
html.dark .truth-table tbody tr:nth-child(even) {
  background: #0c1220 !important;
}

[data-theme="dark"] .truth-table tbody tr.active-row,
html[data-theme="dark"] .truth-table tbody tr.active-row,
html.dark .truth-table tbody tr.active-row {
  background: rgba(56, 189, 248, 0.15) !important;
  color: #38bdf8 !important;
  outline: 2px solid #38bdf8 !important;
}

[data-theme="dark"] .edu-card,
html[data-theme="dark"] .edu-card,
html.dark .edu-card {
  background: #0c1220 !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .edu-card h3,
html[data-theme="dark"] .edu-card h3,
html.dark .edu-card h3 {
  color: #f8fafc !important;
  border-bottom-color: #1e293b !important;
}

[data-theme="dark"] .edu-card p,
[data-theme="dark"] .edu-card ul,
[data-theme="dark"] .edu-card li,
html[data-theme="dark"] .edu-card p,
html[data-theme="dark"] .edu-card ul,
html[data-theme="dark"] .edu-card li,
html.dark .edu-card p,
html.dark .edu-card ul,
html.dark .edu-card li {
  color: #94a3b8 !important;
}

[data-theme="dark"] .compare-table th,
html[data-theme="dark"] .compare-table th,
html.dark .compare-table th {
  background: #111a2e !important;
  color: #f8fafc !important;
  border-color: #1e293b !important;
}

[data-theme="dark"] .compare-table td,
html[data-theme="dark"] .compare-table td,
html.dark .compare-table td {
  border-color: #1e293b !important;
  color: #94a3b8 !important;
}

[data-theme="dark"] .lab-footer,
html[data-theme="dark"] .lab-footer,
html.dark .lab-footer {
  background: #080d18 !important;
  color: #64748b !important;
  border-top: 1px solid #1e293b !important;
}

/* ── 2. LIGHT THEME ── */
:root[data-theme="light"],
[data-theme="light"],
html[data-theme="light"],
html:not(.dark):not([data-theme="dark"]) {
  --lab-bg: #f8fafc;
  --panel-bg: #ffffff;
  --panel-border: #e2e8f0;
  --header-bg: #f8fafc;
  --header-text: #0f172a;
  --accent: #0284c7;
  --accent-light: #e0f2fe;
  --accent-dark: #0369a1;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --wire-off: #cbd5e1;
  --wire-on: #16a34a;
  --wire-sel: #0284c7;
  --led-off: #cbd5e1;
  --led-on: #22c55e;
  --gate-fill: #ffffff;
  --gate-stroke: #0284c7;
}

[data-theme="light"] body,
html[data-theme="light"] body,
html:not(.dark):not([data-theme="dark"]) body {
  background-color: #f8fafc !important;
  background-image: none !important;
  color: #0f172a !important;
}

[data-theme="light"] .lab-title-bar,
html[data-theme="light"] .lab-title-bar,
html:not(.dark):not([data-theme="dark"]) .lab-title-bar {
  background: #ffffff !important;
  color: #0f172a !important;
  border-bottom: 1px solid #e2e8f0 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .lab-title-bar h1,
html[data-theme="light"] .lab-title-bar h1,
html:not(.dark):not([data-theme="dark"]) .lab-title-bar h1 {
  color: #0f172a !important;
}

[data-theme="light"] .lab-title-bar .lab-subtitle,
html[data-theme="light"] .lab-title-bar .lab-subtitle,
html:not(.dark):not([data-theme="dark"]) .lab-title-bar .lab-subtitle {
  color: #64748b !important;
}

[data-theme="light"] .lab-badge,
html[data-theme="light"] .lab-badge,
html:not(.dark):not([data-theme="dark"]) .lab-badge {
  background: #0284c7 !important;
  color: #ffffff !important;
}

[data-theme="light"] .lab-panel,
html[data-theme="light"] .lab-panel,
html:not(.dark):not([data-theme="dark"]) .lab-panel {
  background: #ffffff !important;
  border-color: #e2e8f0 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .lab-panel__header,
html[data-theme="light"] .lab-panel__header,
html:not(.dark):not([data-theme="dark"]) .lab-panel__header {
  background: #f8fafc !important;
  color: #0f172a !important;
  border-bottom: 1px solid #e2e8f0 !important;
}

[data-theme="light"] .control-group-title,
html[data-theme="light"] .control-group-title,
html:not(.dark):not([data-theme="dark"]) .control-group-title {
  color: #475569 !important;
  border-bottom-color: #e2e8f0 !important;
}

[data-theme="light"] .toggle-switch-card,
html[data-theme="light"] .toggle-switch-card,
html:not(.dark):not([data-theme="dark"]) .toggle-switch-card {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .toggle-switch-card:hover,
html[data-theme="light"] .toggle-switch-card:hover,
html:not(.dark):not([data-theme="dark"]) .toggle-switch-card:hover {
  border-color: #cbd5e1 !important;
  background: #f1f5f9 !important;
}

[data-theme="light"] .toggle-label-name,
html[data-theme="light"] .toggle-label-name,
html:not(.dark):not([data-theme="dark"]) .toggle-label-name {
  color: #0f172a !important;
}

[data-theme="light"] .toggle-label-desc,
html[data-theme="light"] .toggle-label-desc,
html:not(.dark):not([data-theme="dark"]) .toggle-label-desc {
  color: #64748b !important;
}

[data-theme="light"] .input-state-badge.state-0,
html[data-theme="light"] .input-state-badge.state-0,
html:not(.dark):not([data-theme="dark"]) .input-state-badge.state-0 {
  background: #e2e8f0 !important;
  color: #475569 !important;
}

[data-theme="light"] .input-state-badge.state-1,
html[data-theme="light"] .input-state-badge.state-1,
html:not(.dark):not([data-theme="dark"]) .input-state-badge.state-1 {
  background: #dbeafe !important;
  color: #1d4ed8 !important;
}

[data-theme="light"] .mode-tab-group,
html[data-theme="light"] .mode-tab-group,
html:not(.dark):not([data-theme="dark"]) .mode-tab-group {
  background: #f1f5f9 !important;
}

[data-theme="light"] .mode-tab,
html[data-theme="light"] .mode-tab,
html:not(.dark):not([data-theme="dark"]) .mode-tab {
  color: #475569 !important;
}

[data-theme="light"] .mode-tab.active,
html[data-theme="light"] .mode-tab.active,
html:not(.dark):not([data-theme="dark"]) .mode-tab.active {
  background: #ffffff !important;
  color: #0284c7 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .btn,
html[data-theme="light"] .btn,
html:not(.dark):not([data-theme="dark"]) .btn {
  background: #ffffff !important;
  color: #0f172a !important;
  border-color: #cbd5e1 !important;
}

[data-theme="light"] .btn:hover,
html[data-theme="light"] .btn:hover,
html:not(.dark):not([data-theme="dark"]) .btn:hover {
  background: #f8fafc !important;
  border-color: #94a3b8 !important;
}

[data-theme="light"] .btn--primary,
html[data-theme="light"] .btn--primary,
html:not(.dark):not([data-theme="dark"]) .btn--primary {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #0284c7 !important;
}

[data-theme="light"] .btn--primary:hover,
html[data-theme="light"] .btn--primary:hover,
html:not(.dark):not([data-theme="dark"]) .btn--primary:hover {
  background: #0369a1 !important;
}

[data-theme="light"] .btn--danger,
html[data-theme="light"] .btn--danger,
html:not(.dark):not([data-theme="dark"]) .btn--danger {
  background: #ffffff !important;
  color: #dc2626 !important;
  border-color: #fca5a5 !important;
}

[data-theme="light"] .btn--danger:hover,
html[data-theme="light"] .btn--danger:hover,
html:not(.dark):not([data-theme="dark"]) .btn--danger:hover {
  background: #fef2f2 !important;
}

[data-theme="light"] .slider-header,
html[data-theme="light"] .slider-header,
html:not(.dark):not([data-theme="dark"]) .slider-header {
  color: #475569 !important;
}

/* Light Schematic & SVG */
[data-theme="light"] .view-switcher-bar,
html[data-theme="light"] .view-switcher-bar,
html:not(.dark):not([data-theme="dark"]) .view-switcher-bar {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .view-btn,
html[data-theme="light"] .view-btn,
html:not(.dark):not([data-theme="dark"]) .view-btn {
  background: #ffffff !important;
  color: #475569 !important;
  border-color: #cbd5e1 !important;
}

[data-theme="light"] .view-btn:hover,
html[data-theme="light"] .view-btn:hover,
html:not(.dark):not([data-theme="dark"]) .view-btn:hover {
  background: #f1f5f9 !important;
  color: #0f172a !important;
}

[data-theme="light"] .view-btn.active,
html[data-theme="light"] .view-btn.active,
html:not(.dark):not([data-theme="dark"]) .view-btn.active {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #0284c7 !important;
}

[data-theme="light"] .circuit-canvas-wrapper,
html[data-theme="light"] .circuit-canvas-wrapper,
html:not(.dark):not([data-theme="dark"]) .circuit-canvas-wrapper {
  background: #f8fafc !important;
  background-image: none !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .svg-demux-box,
html[data-theme="light"] .svg-demux-box,
html:not(.dark):not([data-theme="dark"]) .svg-demux-box {
  fill: #ffffff !important;
  stroke: #0284c7 !important;
  stroke-width: 2.5px !important;
  filter: drop-shadow(0 2px 8px rgba(2, 132, 199, 0.15)) !important;
}

[data-theme="light"] .svg-gate,
html[data-theme="light"] .svg-gate,
html:not(.dark):not([data-theme="dark"]) .svg-gate {
  fill: #ffffff !important;
  stroke: #0284c7 !important;
  stroke-width: 2px !important;
}

[data-theme="light"] .svg-gate.active,
html[data-theme="light"] .svg-gate.active,
html:not(.dark):not([data-theme="dark"]) .svg-gate.active {
  fill: #dcfce7 !important;
  stroke: #16a34a !important;
}

[data-theme="light"] .circuit-canvas-wrapper svg text,
html[data-theme="light"] .circuit-canvas-wrapper svg text,
html:not(.dark):not([data-theme="dark"]) .circuit-canvas-wrapper svg text {
  fill: #0f172a;
}

[data-theme="light"] .svg-text-title,
html[data-theme="light"] .svg-text-title,
html:not(.dark):not([data-theme="dark"]) .svg-text-title {
  fill: #0f172a !important;
  font-weight: 700 !important;
}

[data-theme="light"] .svg-text-sub,
html[data-theme="light"] .svg-text-sub,
html:not(.dark):not([data-theme="dark"]) .svg-text-sub {
  fill: #64748b !important;
}

[data-theme="light"] .svg-text-pin,
html[data-theme="light"] .svg-text-pin,
html:not(.dark):not([data-theme="dark"]) .svg-text-pin {
  fill: #0369a1 !important;
  font-weight: 700 !important;
}

[data-theme="light"] #fn-val-d,
html[data-theme="light"] #fn-val-d,
html:not(.dark):not([data-theme="dark"]) #fn-val-d {
  fill: #16a34a !important;
}

[data-theme="light"] #fn-val-s0,
[data-theme="light"] #fn-val-s1,
[data-theme="light"] #fn-val-s2,
html[data-theme="light"] #fn-val-s0,
html[data-theme="light"] #fn-val-s1,
html[data-theme="light"] #fn-val-s2,
html:not(.dark):not([data-theme="dark"]) #fn-val-s0,
html:not(.dark):not([data-theme="dark"]) #fn-val-s1,
html:not(.dark):not([data-theme="dark"]) #fn-val-s2 {
  fill: #0284c7 !important;
}

[data-theme="light"] .svg-led-off,
html[data-theme="light"] .svg-led-off,
html:not(.dark):not([data-theme="dark"]) .svg-led-off {
  fill: #cbd5e1 !important;
  stroke: #94a3b8 !important;
}

[data-theme="light"] .svg-wire,
html[data-theme="light"] .svg-wire,
html:not(.dark):not([data-theme="dark"]) .svg-wire {
  stroke: #cbd5e1 !important;
}

[data-theme="light"] .svg-wire.active,
html[data-theme="light"] .svg-wire.active,
html:not(.dark):not([data-theme="dark"]) .svg-wire.active {
  stroke: #16a34a !important;
  filter: drop-shadow(0 0 3px rgba(22, 163, 74, 0.4)) !important;
}

[data-theme="light"] .svg-wire.wire-select,
html[data-theme="light"] .svg-wire.wire-select,
html:not(.dark):not([data-theme="dark"]) .svg-wire.wire-select {
  stroke: #94a3b8 !important;
}

[data-theme="light"] .svg-wire.wire-select.active,
html[data-theme="light"] .svg-wire.wire-select.active,
html:not(.dark):not([data-theme="dark"]) .svg-wire.wire-select.active {
  stroke: #0284c7 !important;
  filter: drop-shadow(0 0 3px rgba(2, 132, 199, 0.4)) !important;
}

/* Light Operation Banner */
[data-theme="light"] .op-banner,
html[data-theme="light"] .op-banner,
html:not(.dark):not([data-theme="dark"]) .op-banner {
  background: #f0f9ff !important;
  border: 1px solid #bae6fd !important;
  border-left: 5px solid #0284c7 !important;
  color: #0f172a !important;
}

[data-theme="light"] .op-state-text,
html[data-theme="light"] .op-state-text,
html:not(.dark):not([data-theme="dark"]) .op-state-text {
  color: #0284c7 !important;
}

[data-theme="light"] .op-desc-text,
html[data-theme="light"] .op-desc-text,
html:not(.dark):not([data-theme="dark"]) .op-desc-text {
  color: #475569 !important;
}

/* Light Right Column */
[data-theme="light"] .output-hero-card,
html[data-theme="light"] .output-hero-card,
html:not(.dark):not([data-theme="dark"]) .output-hero-card {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%) !important;
  color: #ffffff !important;
}

[data-theme="light"] .output-hero-label,
html[data-theme="light"] .output-hero-label,
html:not(.dark):not([data-theme="dark"]) .output-hero-label {
  color: #94a3b8 !important;
}

[data-theme="light"] .output-hero-val,
html[data-theme="light"] .output-hero-val,
html:not(.dark):not([data-theme="dark"]) .output-hero-val {
  color: #4ade80 !important;
}

[data-theme="light"] .select-hero-val,
html[data-theme="light"] .select-hero-val,
html:not(.dark):not([data-theme="dark"]) .select-hero-val {
  color: #38bdf8 !important;
  background: rgba(255, 255, 255, 0.1) !important;
}

[data-theme="light"] .vector-card,
html[data-theme="light"] .vector-card,
html:not(.dark):not([data-theme="dark"]) .vector-card {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .vector-bit-box,
html[data-theme="light"] .vector-bit-box,
html:not(.dark):not([data-theme="dark"]) .vector-bit-box {
  background: #ffffff !important;
  border-color: #cbd5e1 !important;
}

[data-theme="light"] .vector-bit-box.selected,
html[data-theme="light"] .vector-bit-box.selected,
html:not(.dark):not([data-theme="dark"]) .vector-bit-box.selected {
  border-color: #0284c7 !important;
  background: #e0f2fe !important;
}

[data-theme="light"] .vector-bit-box.active-high,
html[data-theme="light"] .vector-bit-box.active-high,
html:not(.dark):not([data-theme="dark"]) .vector-bit-box.active-high {
  border-color: #22c55e !important;
  background: #f0fdf4 !important;
}

[data-theme="light"] .vector-bit-name,
html[data-theme="light"] .vector-bit-name,
html:not(.dark):not([data-theme="dark"]) .vector-bit-name {
  color: #475569 !important;
}

[data-theme="light"] .vector-bit-val,
html[data-theme="light"] .vector-bit-val,
html:not(.dark):not([data-theme="dark"]) .vector-bit-val {
  color: #64748b !important;
}

[data-theme="light"] .vector-bit-box.active-high .vector-bit-val,
html[data-theme="light"] .vector-bit-box.active-high .vector-bit-val,
html:not(.dark):not([data-theme="dark"]) .vector-bit-box.active-high .vector-bit-val {
  color: #16a34a !important;
}

[data-theme="light"] .output-led-item,
html[data-theme="light"] .output-led-item,
html:not(.dark):not([data-theme="dark"]) .output-led-item {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .output-led-item.selected,
html[data-theme="light"] .output-led-item.selected,
html:not(.dark):not([data-theme="dark"]) .output-led-item.selected {
  border-color: #7dd3fc !important;
  background: #f0f9ff !important;
}

[data-theme="light"] .output-led-item.active-high,
html[data-theme="light"] .output-led-item.active-high,
html:not(.dark):not([data-theme="dark"]) .output-led-item.active-high {
  border-color: #86efac !important;
  background: #f0fdf4 !important;
}

[data-theme="light"] .output-item-label,
html[data-theme="light"] .output-item-label,
html:not(.dark):not([data-theme="dark"]) .output-item-label {
  color: #0f172a !important;
}

[data-theme="light"] .output-item-eq,
html[data-theme="light"] .output-item-eq,
html:not(.dark):not([data-theme="dark"]) .output-item-eq {
  color: #64748b !important;
}

[data-theme="light"] .output-item-state,
html[data-theme="light"] .output-item-state,
html:not(.dark):not([data-theme="dark"]) .output-item-state {
  background: #e2e8f0 !important;
  color: #475569 !important;
}

[data-theme="light"] .output-item-state.state-high,
html[data-theme="light"] .output-item-state.state-high,
html:not(.dark):not([data-theme="dark"]) .output-item-state.state-high {
  background: #dcfce7 !important;
  color: #15803d !important;
}

/* Light Truth Table & Theory */
[data-theme="light"] .truth-table th,
html[data-theme="light"] .truth-table th,
html:not(.dark):not([data-theme="dark"]) .truth-table th {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  border-color: #cbd5e1 !important;
}

[data-theme="light"] .truth-table td,
html[data-theme="light"] .truth-table td,
html:not(.dark):not([data-theme="dark"]) .truth-table td {
  border-color: #e2e8f0 !important;
  color: #0f172a !important;
}

[data-theme="light"] .truth-table tbody tr:nth-child(even),
html[data-theme="light"] .truth-table tbody tr:nth-child(even),
html:not(.dark):not([data-theme="dark"]) .truth-table tbody tr:nth-child(even) {
  background: #f8fafc !important;
}

[data-theme="light"] .truth-table tbody tr.active-row,
html[data-theme="light"] .truth-table tbody tr.active-row,
html:not(.dark):not([data-theme="dark"]) .truth-table tbody tr.active-row {
  background: #e0f2fe !important;
  color: #0369a1 !important;
  outline: 2px solid #0284c7 !important;
}

[data-theme="light"] .edu-card,
html[data-theme="light"] .edu-card,
html:not(.dark):not([data-theme="dark"]) .edu-card {
  background: #ffffff !important;
  border-color: #e2e8f0 !important;
}

[data-theme="light"] .edu-card h3,
html[data-theme="light"] .edu-card h3,
html:not(.dark):not([data-theme="dark"]) .edu-card h3 {
  color: #0f172a !important;
  border-bottom-color: #e0f2fe !important;
}

[data-theme="light"] .edu-card p,
[data-theme="light"] .edu-card ul,
[data-theme="light"] .edu-card li,
html[data-theme="light"] .edu-card p,
html[data-theme="light"] .edu-card ul,
html[data-theme="light"] .edu-card li,
html:not(.dark):not([data-theme="dark"]) .edu-card p,
html:not(.dark):not([data-theme="dark"]) .edu-card ul,
html:not(.dark):not([data-theme="dark"]) .edu-card li {
  color: #475569 !important;
}

[data-theme="light"] .compare-table th,
html[data-theme="light"] .compare-table th,
html:not(.dark):not([data-theme="dark"]) .compare-table th {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  border-color: #cbd5e1 !important;
}

[data-theme="light"] .compare-table td,
html[data-theme="light"] .compare-table td,
html:not(.dark):not([data-theme="dark"]) .compare-table td {
  border-color: #e2e8f0 !important;
  color: #334155 !important;
}

[data-theme="light"] .lab-footer,
html[data-theme="light"] .lab-footer,
html:not(.dark):not([data-theme="dark"]) .lab-footer {
  background: #f8fafc !important;
  color: #64748b !important;
  border-top: 1px solid #e2e8f0 !important;
}