:root {
  --ink: #0f1513;
  --ink-soft: #17221e;
  --ink-surface: #1e2c27;
  --ink-elevated: #263832;
  --ink-border: #2e433c;
  --paper: #ede9df;
  --paper-soft: #d8d3c5;
  --muted: #85918b;
  --green: #236957;
  --green-soft: #70a68e;
  --green-glow: #38bdf8;
  --green-bright: #34d399;
  --rust: #bb4c2e;
  --rust-soft: #e8856c;
  --gold: #d49a36;
  --gold-soft: #fcd34d;
  --blue: #2a6f97;
  --blue-soft: #60a5fa;
  --purple: #7b2cbf;
  --purple-soft: #c084fc;
  --zx-z: #22c55e;
  --zx-x: #ef4444;
  --zx-h: #3b82f6;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --nav-height: 52px;
  --dock-height: 56px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

/* App Shell Layout */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
}

/* Top Navigation Bar */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.85rem;
  background: var(--ink-soft);
  border-bottom: 1px solid var(--ink-border);
  min-height: var(--nav-height);
  z-index: 30;
  gap: 0.5rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-badge {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--green);
  color: var(--paper);
  font-family: var(--mono);
  font-weight: 800;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.brand-titles h1 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
  white-space: nowrap;
}

.brand-titles .subtitle {
  font-size: 0.68rem;
  font-family: var(--mono);
  color: var(--green-soft);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.view-mode-toggle {
  display: flex;
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  border-radius: 6px;
  padding: 2px;
}

.view-mode-toggle button {
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  min-height: 28px;
  transition: all 0.15s ease;
}

.view-mode-toggle button.active {
  background: var(--green);
  color: var(--paper);
  font-weight: 600;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  border-radius: 20px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--green-soft);
  white-space: nowrap;
}

.status-pill .pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-bright);
  box-shadow: 0 0 8px var(--green-bright);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

/* Quick Discoveries Carousel */
.discoveries-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: var(--ink-surface);
  border-bottom: 1px solid var(--ink-border);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  z-index: 25;
}

.discoveries-bar::-webkit-scrollbar {
  display: none;
}

.discovery-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--gold-soft);
  white-space: nowrap;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 4px;
}

.discovery-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink-soft);
  border: 1px solid var(--ink-border);
  border-radius: 16px;
  padding: 4px 12px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--paper-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  min-height: 32px;
  user-select: none;
}

.discovery-chip:hover, .discovery-chip:active {
  background: var(--green);
  border-color: var(--green-bright);
  color: var(--paper);
  transform: translateY(-1px);
}

.discovery-chip .icon {
  font-size: 0.85rem;
}

/* Banners */
.banner-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0.85rem;
  font-size: 0.72rem;
  font-family: var(--mono);
  background: rgba(35, 105, 87, 0.2);
  border-bottom: 1px solid rgba(35, 105, 87, 0.4);
  color: var(--paper-soft);
}

.banner-strip.error {
  background: rgba(187, 76, 46, 0.25);
  border-bottom-color: rgba(187, 76, 46, 0.5);
  color: var(--rust-soft);
}

/* Split Studio Workspace */
.studio-split-container {
  display: flex;
  flex: 1;
  width: 100%;
  height: calc(100vh - var(--nav-height) - 42px);
  height: calc(100dvh - var(--nav-height) - 42px);
  overflow: hidden;
}

/* Panes */
.pane {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.physics-pane {
  flex: 1.1;
  border-right: 1px solid var(--ink-border);
  min-width: 380px;
  background: var(--ink);
}

.quantum-pane {
  flex: 1;
  min-width: 380px;
  background: var(--ink-soft);
}

/* Viewport Area */
.viewport-wrap {
  position: relative;
  flex: 1.2;
  min-height: 240px;
  background: #0b110f;
  overflow: hidden;
  user-select: none;
  touch-action: none;
}

.viewport-canvas {
  width: 100%;
  height: 100%;
  display: block;
  outline: none;
  touch-action: none;
}

.viewport-overlay-top {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.overlay-tag {
  background: rgba(15, 21, 19, 0.85);
  border: 1px solid var(--ink-border);
  padding: 3px 8px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  color: var(--paper);
}

.viewport-overlay-hint {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 21, 19, 0.85);
  border: 1px solid var(--ink-border);
  border-radius: 20px;
  padding: 4px 12px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--paper-soft);
  pointer-events: none;
  white-space: nowrap;
  transition: opacity 0.3s;
}

/* Scrollable Trays */
.scroll-tray {
  flex: 0.95;
  overflow-y: auto;
  padding: 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.scroll-tray::-webkit-scrollbar,
.code-editor::-webkit-scrollbar,
.tab-panel::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

.scroll-tray::-webkit-scrollbar-thumb,
.code-editor::-webkit-scrollbar-thumb,
.tab-panel::-webkit-scrollbar-thumb {
  background: var(--ink-border);
  border-radius: 3px;
}

/* Cards */
.card {
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  border-radius: 6px;
  padding: 0.65rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.45rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.card-header .card-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--green-soft);
  text-transform: uppercase;
}

.verdict-badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--ink-border);
  color: var(--paper);
}

.verdict-badge[data-state="pass"] {
  background: rgba(35, 105, 87, 0.4);
  color: var(--green-bright);
  border: 1px solid var(--green);
}

.verdict-badge[data-state="fail"] {
  background: rgba(187, 76, 46, 0.4);
  color: var(--rust-soft);
  border: 1px solid var(--rust);
}

.verdict-badge[data-state="dilated"] {
  background: rgba(212, 154, 54, 0.4);
  color: var(--gold-soft);
  border: 1px solid var(--gold);
}

/* Definition Data Grids */
.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.3rem 0.65rem;
  font-family: var(--mono);
  font-size: 0.73rem;
}

.data-grid.dense {
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem 0.5rem;
  font-size: 0.7rem;
}

.data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.data-row dt {
  color: var(--muted);
}

.data-row dd {
  color: var(--paper);
  font-weight: 500;
  text-align: right;
}

.data-row.highlight dt {
  color: var(--gold-soft);
}
.data-row.highlight dd {
  color: var(--gold-soft);
  font-weight: 700;
}

.meter-bar {
  width: 100%;
  height: 5px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin: 0.35rem 0;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0%;
  background: var(--green-bright);
  transition: width 0.1s ease;
}

.meter-fill[data-state="fail"] {
  background: var(--rust);
}

/* Tabs */
.tabs-nav {
  display: flex;
  background: var(--ink-soft);
  border-bottom: 1px solid var(--ink-border);
  padding: 0 0.4rem;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.6rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--paper-soft);
}

.tab-btn.active {
  color: var(--paper);
  border-bottom-color: var(--green-bright);
  background: rgba(35, 105, 87, 0.15);
}

.tab-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 0.65rem;
  flex-direction: column;
  gap: 0.65rem;
}

.tab-panel.active {
  display: flex;
}

/* Mobile Bottom Navigation Dock (Hidden on Desktop) */
.mobile-bottom-dock {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--dock-height);
  background: var(--ink-soft);
  border-top: 1px solid var(--ink-border);
  z-index: 50;
  grid-template-columns: repeat(5, 1fr);
  box-shadow: 0 -4px 12px rgba(0,0,0,0.4);
}

.dock-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  cursor: pointer;
  padding: 4px;
  gap: 3px;
  min-height: 44px;
  transition: color 0.15s;
}

.dock-item .dock-icon {
  font-size: 1.1rem;
}

.dock-item.active {
  color: var(--green-bright);
  font-weight: 700;
}

/* Controls Grid */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.5rem;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.control-item label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.control-item label span.val {
  color: var(--paper);
  font-weight: 600;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--ink-border);
  border-radius: 3px;
  outline: none;
  touch-action: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--green-soft);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  transition: transform 0.1s, background 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover,
input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.15);
  background: var(--green-bright);
}

.check-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--paper-soft);
  cursor: pointer;
  min-height: 28px;
}

.check-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--green);
}

.btn {
  background: var(--green);
  color: var(--paper);
  border: 1px solid var(--green-soft);
  border-radius: 5px;
  padding: 6px 14px;
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 38px;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  user-select: none;
}

.btn:hover, .btn:active {
  background: #2b7d68;
  border-color: var(--green-bright);
}

.btn.secondary {
  background: var(--ink-surface);
  border-color: var(--ink-border);
  color: var(--paper);
}

.btn.secondary:hover, .btn.secondary:active {
  background: var(--ink-elevated);
}

.btn.rust {
  background: var(--rust);
  border-color: var(--rust-soft);
}

.btn.rust:hover, .btn.rust:active {
  background: #cf5534;
}

/* QVM Studio & Gate Palette */
.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--ink-border);
}

.preset-select {
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 6px 10px;
  border-radius: 4px;
  outline: none;
  min-height: 36px;
}

.gate-palette {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin: 0.4rem 0;
}

.gate-btn {
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 36px;
  height: 32px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.1s ease;
}

.gate-btn:hover, .gate-btn:active {
  background: var(--blue);
  border-color: var(--blue-soft);
}

.gate-btn.cnot {
  background: var(--purple);
  border-color: var(--purple-soft);
}

.gate-btn.tgate {
  background: #a855f7;
  border-color: #d8b4fe;
}

.code-editor-wrap {
  position: relative;
  border: 1px solid var(--ink-border);
  border-radius: 4px;
  background: #090e0c;
  overflow: hidden;
}

.code-editor {
  width: 100%;
  height: 150px;
  background: transparent;
  border: none;
  color: #a7f3d0;
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.6rem;
  resize: vertical;
  outline: none;
  line-height: 1.45;
  tab-size: 2;
}

.tier-route-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.tier-route-badge.classical {
  background: rgba(34, 197, 94, 0.2);
  color: #4ade80;
  border: 1px solid #22c55e;
}

.tier-route-badge.tableau {
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
  border: 1px solid #3b82f6;
}

.tier-route-badge.magic {
  background: rgba(168, 85, 247, 0.2);
  color: #d8b4fe;
  border: 1px solid #a855f7;
}

.tier-route-badge.statevector {
  background: rgba(234, 179, 8, 0.2);
  color: #fde047;
  border: 1px solid #eab308;
}

/* ZX Graph Canvas Area */
.zx-canvas-container {
  position: relative;
  width: 100%;
  height: 230px;
  background: #090e0d;
  border: 1px solid var(--ink-border);
  border-radius: 4px;
  overflow: hidden;
  touch-action: none;
}

.zx-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.zx-controls-bar {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

/* Histogram */
.histogram-chart {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.hist-bar-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.hist-label {
  min-width: 50px;
  color: var(--paper-soft);
}

.hist-bar-track {
  flex: 1;
  height: 20px;
  background: var(--ink-soft);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
  display: flex;
}

.hist-bar-value {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--green-bright));
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 2px;
}

.hist-bar-shots {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.hist-prob-text {
  min-width: 80px;
  text-align: right;
  color: var(--green-bright);
  font-weight: 600;
}

/* Commuting Square Graphical Card */
.commuting-square-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 6px;
  margin-top: 0.35rem;
}

.square-node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 92%;
}

.square-node {
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--ink-border);
  color: var(--paper);
  border: 1px solid var(--muted);
  text-align: center;
}

.square-node.micro {
  background: rgba(42, 111, 151, 0.3);
  border-color: var(--blue-soft);
  color: var(--blue-soft);
}

.square-node.coarse {
  background: rgba(35, 105, 87, 0.3);
  border-color: var(--green-soft);
  color: var(--green-bright);
}

.square-arrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: bold;
}

.square-vertical-arrows {
  display: flex;
  justify-content: space-between;
  width: 84%;
  padding: 0.2rem 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--green-soft);
}

.commuting-status-text {
  font-family: var(--mono);
  font-size: 0.72rem;
  margin-top: 0.3rem;
  color: var(--paper-soft);
  text-align: center;
}

/* Amplitudes Grid */
.amp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.4rem;
}

.amp-box {
  background: var(--ink-soft);
  border: 1px solid var(--ink-border);
  border-radius: 4px;
  padding: 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.amp-box .ket {
  font-weight: 700;
  color: var(--green-bright);
}

.amp-box .val {
  color: var(--paper);
  margin-top: 2px;
}

.amp-box .phase {
  font-size: 0.65rem;
  color: var(--muted);
}

/* Species Palette */
.palette-strip {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.swatch-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--ink-soft);
  border: 1px solid var(--ink-border);
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  transition: all 0.1s ease;
}

.swatch-btn:hover, .swatch-btn:active {
  background: var(--ink-surface);
  border-color: var(--green-soft);
}

.swatch-btn.active {
  background: var(--green);
  border-color: var(--green-bright);
}

.swatch-circle {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  margin-bottom: 2px;
}

.swatch-sym {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--paper);
}

/* Theory Drawer Modal */
.theory-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.theory-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.theory-drawer {
  background: var(--ink-soft);
  border-top: 1px solid var(--green);
  border-radius: 16px 16px 0 0;
  width: 100%;
  max-width: 760px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
  overflow: hidden;
}

.theory-modal-backdrop.open .theory-drawer {
  transform: translateY(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--ink-border);
}

.drawer-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
}

.drawer-body {
  padding: 1.25rem;
  overflow-y: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--paper-soft);
}

.drawer-body h3 {
  color: var(--green-bright);
  font-size: 0.95rem;
  margin: 1rem 0 0.4rem;
}

.drawer-body p {
  margin-bottom: 0.75rem;
}

.drawer-body code {
  background: var(--ink-surface);
  padding: 2px 5px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gold-soft);
}

/* ========================================================================= */
/* Mobile-First Responsive Breakpoints (< 768px)                             */
/* ========================================================================= */

@media (max-width: 768px) {
  body {
    padding-bottom: var(--dock-height);
  }

  .mobile-bottom-dock {
    display: grid;
  }

  .studio-split-container {
    height: calc(100vh - var(--nav-height) - 42px - var(--dock-height));
    height: calc(100dvh - var(--nav-height) - 42px - var(--dock-height));
  }

  /* On mobile, show only the selected section via mobile dock navigation */
  .physics-pane, .quantum-pane {
    min-width: 100%;
    flex: 1 0 100%;
    border-right: none;
  }

  body[data-mobile-view="physics"] .quantum-pane { display: none !important; }
  body[data-mobile-view="physics"] .physics-pane { display: flex !important; }

  body:not([data-mobile-view="physics"]) .physics-pane { display: none !important; }
  body:not([data-mobile-view="physics"]) .quantum-pane { display: flex !important; }

  .viewport-wrap {
    min-height: 280px;
    flex: 1.1;
  }

  .data-grid.dense {
    grid-template-columns: repeat(2, 1fr);
  }

  .brand-titles .subtitle {
    display: none;
  }

  .top-nav {
    padding: 0.35rem 0.5rem;
  }

  .btn {
    min-height: 44px;
  }
}

/* One-Tap Pill Group Selectors */
.pill-selector-group {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 0.35rem;
}

.quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--ink-soft);
  border: 1px solid var(--ink-border);
  border-radius: 14px;
  padding: 3px 9px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--paper-soft);
  cursor: pointer;
  min-height: 28px;
  transition: all 0.12s ease;
  user-select: none;
}

.quick-pill:hover:not(:disabled) {
  background: var(--ink-elevated);
  border-color: var(--green-soft);
  color: var(--paper);
}

.quick-pill.active {
  background: var(--green);
  border-color: var(--green-bright);
  color: var(--paper);
  font-weight: 700;
}

.quick-pill:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: transparent;
  background: rgba(0,0,0,0.2);
}

.fps-guard-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.67rem;
  background: rgba(35, 105, 87, 0.25);
  color: var(--green-bright);
  border: 1px solid rgba(35, 105, 87, 0.5);
}

.fps-guard-badge.clamped {
  background: rgba(212, 154, 54, 0.25);
  color: var(--gold-soft);
  border-color: rgba(212, 154, 54, 0.5);
}