/* ==========================================================================
   EULER ANGLES & GIMBAL LOCK INTERACTIVE LAB - STYLESHEET
   Wide, Tab-less Vertical Layout with High-Luminance Color Palette
   ========================================================================== */

:root {
  --ea-panel-bg: #ffffff;
  --ea-panel-alt: #f8fafc;
  --ea-panel-soft: #f1f5f9;
  --ea-border: #e2e8f0;
  --ea-border-strong: #cbd5e1;
  --ea-text: #0f172a;
  --ea-text-muted: #475569;
  --ea-accent: #0ea5e9;
  --ea-accent-soft: #e0f2fe;
  --ea-accent-text: #0369a1;
  --ea-red: #ff4d4f;
  --ea-red-soft: #ffe4e6;
  --ea-red-text: #be123c;
  --ea-green: #22c55e;
  --ea-green-soft: #dcfce7;
  --ea-green-text: #15803d;
  --ea-blue: #3b82f6;
  --ea-blue-soft: #dbeafe;
  --ea-blue-text: #1d4ed8;
  --ea-amber: #f59e0b;
  --ea-amber-soft: #fef3c7;
  --ea-amber-text: #b45309;
  --ea-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
}

html[data-theme="dark"] {
  --ea-panel-bg: #1e293b;
  --ea-panel-alt: #0f172a;
  --ea-panel-soft: #334155;
  --ea-border: #334155;
  --ea-border-strong: #475569;
  --ea-text: #f8fafc;
  --ea-text-muted: #cbd5e1;
  --ea-accent: #38bdf8;
  --ea-accent-soft: rgba(56, 189, 248, 0.18);
  --ea-accent-text: #7dd3fc;
  --ea-red: #ff6b6b;
  --ea-red-soft: rgba(255, 107, 107, 0.22);
  --ea-red-text: #fecdd3;
  --ea-green: #4ade80;
  --ea-green-soft: rgba(74, 222, 128, 0.22);
  --ea-green-text: #bbf7d0;
  --ea-blue: #60a5fa;
  --ea-blue-soft: rgba(96, 165, 250, 0.22);
  --ea-blue-text: #bfdbfe;
  --ea-amber: #fbbf24;
  --ea-amber-soft: rgba(251, 191, 36, 0.2);
  --ea-amber-text: #fde68a;
  --ea-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.euler-app {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ea-text);
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  width: 100%;
}

/* Section Card Base */
.ea-section-card {
  background: var(--ea-panel-bg);
  border: 1px solid var(--ea-border);
  border-radius: 12px;
  padding: 1.15rem 1.35rem;
  box-shadow: var(--ea-shadow);
}

.ea-section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--ea-border);
}

.ea-section-title {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  font-size: 1.12rem !important;
  font-weight: 700 !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ea-text);
}

.ea-section-title i {
  color: var(--ea-accent);
}

/* 1. Sequence Selection Panel (Left: Top/Bottom Sequences | Right: Blue Equivalence Box) */
.ea-sec1-split {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 0.95rem;
  align-items: stretch;
}

@media (max-width: 960px) {
  .ea-sec1-split {
    grid-template-columns: 1fr;
  }
}

.ea-sec1-left {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.ea-seq-box {
  background: var(--ea-panel-alt);
  border: 1px solid var(--ea-border);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
}

.ea-seq-box-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 0.45rem;
}

.ea-seq-box-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ea-text);
}

.ea-seq-box-sub {
  font-size: 0.72rem;
  color: var(--ea-text-muted);
}

.ea-seq-btn-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.38rem;
}

@media (max-width: 560px) {
  .ea-seq-btn-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ea-seq-btn {
  padding: 0.38rem 0.3rem;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  border-radius: 7px;
  border: 1px solid var(--ea-border-strong);
  background: var(--ea-panel-bg);
  color: var(--ea-text);
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}

.ea-seq-btn:hover {
  border-color: var(--ea-accent);
  color: var(--ea-accent-text);
  background: var(--ea-accent-soft);
}

.ea-seq-btn.active {
  background: var(--ea-accent);
  color: #ffffff;
  border-color: var(--ea-accent);
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.35);
}

/* Intrinsic <-> Extrinsic Dual Equivalence Box on the Right */
.ea-equiv-banner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  background: var(--ea-accent-soft);
  border: 1px solid var(--ea-accent);
  border-radius: 10px;
  padding: 0.8rem 1rem;
}

.ea-equiv-col {
  display: flex;
  flex-direction: column;
  gap: 0.16rem;
}

.ea-equiv-tag {
  font-size: 0.71rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ea-accent-text);
}

.ea-equiv-Main {
  font-size: 0.9rem;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--ea-text);
}

.ea-equiv-desc {
  font-size: 0.76rem;
  color: var(--ea-text-muted);
  line-height: 1.38;
}

.ea-equiv-symbol {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ea-accent-text);
  text-align: center;
  line-height: 1;
}

/* 2. Full-Width 3D Viewer Card */
.ea-viewer-card {
  background: var(--ea-panel-bg);
  border: 1px solid var(--ea-border);
  border-radius: 12px;
  box-shadow: var(--ea-shadow);
  overflow: hidden;
}

.ea-viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1rem;
  background: var(--ea-panel-alt);
  border-bottom: 1px solid var(--ea-border);
}

.ea-toolbar-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.ea-group-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ea-text-muted);
  margin-right: 0.2rem;
}

.ea-pill-btn {
  padding: 0.3rem 0.68rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--ea-border-strong);
  background: var(--ea-panel-bg);
  color: var(--ea-text);
  cursor: pointer;
  transition: all 0.15s ease;
}

.ea-pill-btn:hover {
  border-color: var(--ea-accent);
  color: var(--ea-accent-text);
}

.ea-pill-btn.active {
  background: var(--ea-accent);
  border-color: var(--ea-accent);
  color: #ffffff;
}

.ea-canvas-wrap {
  position: relative;
  width: 100%;
  height: 650px;
  min-height: 380px;
  max-height: 1020px;
  background: var(--ea-panel-alt);
  user-select: none;
}

@media (max-width: 768px) {
  .ea-canvas-wrap {
    height: 460px;
  }
}

#euler-canvas-container {
  width: 100%;
  height: 100%;
}

/* Bright HUD Overlays inside 3D Viewport */
.ea-hud-top-left {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
}

.ea-hud-pill {
  background: var(--ea-panel-bg);
  color: var(--ea-text);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  border: 1px solid var(--ea-border-strong);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* Top-Right Controls beside 3D ViewCube (Font A-/A+ and Home) */
.ea-vc-top-bar {
  position: absolute;
  top: 0.75rem;
  right: 202px;
  z-index: 12;
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
}

.ea-vc-ctrl-btn {
  height: 30px;
  min-width: 32px;
  padding: 0 0.45rem;
  border-radius: 7px;
  border: 1px solid var(--ea-border-strong);
  background: var(--ea-panel-bg);
  color: var(--ea-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 800;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all 0.15s ease;
  opacity: 0.92;
}

.ea-vc-ctrl-btn:hover {
  opacity: 1;
  color: var(--ea-accent-text);
  border-color: var(--ea-accent);
  background: var(--ea-accent-soft);
}

/* Onshape / SolidWorks Style Right-Side Floating Display Dock */
.ea-cad-right-dock {
  position: absolute;
  top: 202px;
  right: 0.75rem;
  z-index: 12;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.38rem;
  border-radius: 10px;
  border: 1px solid var(--ea-border-strong);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.1);
}

html[data-theme="dark"] .ea-cad-right-dock {
  background: rgba(30, 41, 59, 0.9);
}

.ea-cad-dock-sep {
  height: 1px;
  background: var(--ea-border-strong);
  margin: 0.18rem 0.25rem;
  opacity: 0.7;
}

.ea-cad-dock-btn {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.34rem 0.58rem;
  border-radius: 7px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ea-text-muted);
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
  text-align: left;
  white-space: nowrap;
}

.ea-cad-dock-btn i {
  width: 15px;
  text-align: center;
  font-size: 0.8rem;
}

.ea-cad-dock-btn:hover {
  background: var(--ea-panel-soft);
  color: var(--ea-text);
}

.ea-cad-dock-btn.active {
  background: var(--ea-accent-soft);
  color: var(--ea-accent-text);
  border-color: var(--ea-accent);
  font-weight: 700;
}

.ea-cad-dock-btn.active i {
  color: var(--ea-accent);
}

.ea-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.36rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid transparent;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.ea-status-badge--ok {
  background: var(--ea-green-soft);
  color: var(--ea-green-text);
  border-color: var(--ea-green);
}

.ea-status-badge--warn {
  background: var(--ea-amber-soft);
  color: var(--ea-amber-text);
  border-color: var(--ea-amber);
}

.ea-status-badge--lock {
  background: var(--ea-red-soft);
  color: var(--ea-red-text);
  border-color: var(--ea-red);
  animation: ea-pulse 1.2s infinite ease-in-out;
}

@keyframes ea-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.ea-hud-bottom-left {
  position: absolute;
  bottom: 1.05rem;
  left: 0.85rem;
  z-index: 10;
  pointer-events: none;
  font-size: 0.75rem;
  color: var(--ea-text-muted);
  background: var(--ea-panel-bg);
  padding: 0.24rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--ea-border);
  opacity: 0.92;
}

/* Slick, Subtle Bottom Viewport Resize Handle */
.ea-viewport-resizer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 13px;
  z-index: 14;
  cursor: ns-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom, transparent, rgba(148, 163, 184, 0.14));
  transition: background 0.15s ease;
}

.ea-viewport-resizer:hover,
.ea-viewport-resizer.dragging {
  background: rgba(14, 165, 233, 0.16);
}

.ea-resizer-grip {
  width: 46px;
  height: 4px;
  border-radius: 999px;
  background: var(--ea-border-strong);
  transition: all 0.15s ease;
}

.ea-viewport-resizer:hover .ea-resizer-grip,
.ea-viewport-resizer.dragging .ea-resizer-grip {
  width: 68px;
  background: var(--ea-accent);
}

.ea-resizer-toggle {
  position: absolute;
  right: 0.75rem;
  bottom: 3px;
  width: 24px;
  height: 20px;
  border-radius: 5px;
  border: 1px solid var(--ea-border);
  background: var(--ea-panel-bg);
  color: var(--ea-text-muted);
  font-size: 0.68rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
  transition: all 0.15s ease;
}

.ea-resizer-toggle:hover {
  opacity: 1;
  border-color: var(--ea-accent);
  color: var(--ea-accent-text);
}

/* 4-Column Compact Rotary Knobs + Simulation Strip directly under the 3D Viewer */
.ea-angles-strip {
  padding: 0.75rem 0.9rem;
  background: var(--ea-panel-bg);
  border-top: 1px solid var(--ea-border);
}

.ea-angles-4col {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) 1.15fr;
  gap: 0.65rem;
  align-items: stretch;
}

@media (max-width: 1120px) {
  .ea-angles-4col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .ea-angles-4col {
    grid-template-columns: 1fr;
  }
}

.ea-angle-card {
  padding: 0.65rem 0.7rem;
  border-radius: 10px;
  background: var(--ea-panel-alt);
  border: 1px solid var(--ea-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 0.3rem;
}

.ea-angle-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.35rem;
}

.ea-knob-wrap {
  flex-shrink: 0;
  width: 162px;
  height: 162px;
  margin: 0 auto;
}

.ea-knob-svg {
  width: 100%;
  height: 100%;
  cursor: grab;
  user-select: none;
  touch-action: none;
}

.ea-knob-svg:active {
  cursor: grabbing;
}

.ea-knob-bezel {
  fill: var(--ea-panel-bg);
  stroke: var(--ea-border);
  stroke-width: 1.5;
}

.ea-knob-track {
  fill: none;
  stroke: var(--ea-border-strong);
  stroke-width: 6.5;
  opacity: 0.5;
}

.ea-knob-arc {
  fill: none;
  stroke: var(--ea-accent);
  stroke-width: 7;
  stroke-linecap: round;
}

.ea-knob-cap {
  fill: var(--ea-panel-alt);
  stroke: var(--ea-border-strong);
  stroke-width: 2;
  filter: drop-shadow(0 3px 6px rgba(15, 23, 42, 0.14));
}

.ea-knob-pointer {
  stroke: var(--ea-accent);
  stroke-width: 3.4;
  stroke-linecap: round;
}

.ea-knob-dot {
  fill: var(--ea-accent);
}

.ea-knob-readout-svg {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14.5px;
  font-weight: 800;
  fill: var(--ea-text);
  text-anchor: middle;
  pointer-events: none;
}

/* Integrated Clickable Perimeter Snap Nodes on the Rotary Knob */
.ea-knob-snap-node {
  cursor: pointer;
}

.ea-knob-snap-pill {
  fill: transparent;
  rx: 5px;
  ry: 5px;
  transition: fill 0.14s ease, stroke 0.14s ease;
}

.ea-knob-snap-text {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  fill: var(--ea-text-muted);
  text-anchor: middle;
  dominant-baseline: central;
  transition: fill 0.14s ease, font-weight 0.14s ease;
  user-select: none;
}

.ea-knob-snap-node:hover .ea-knob-snap-pill {
  fill: var(--ea-accent-soft);
  stroke: var(--ea-accent);
  stroke-width: 1;
}

.ea-knob-snap-node:hover .ea-knob-snap-text {
  fill: var(--ea-accent-text);
  font-weight: 800;
}

.ea-knob-snap-node.active .ea-knob-snap-pill {
  fill: var(--ea-accent);
}

.ea-knob-snap-node.active .ea-knob-snap-text {
  fill: #ffffff;
  font-weight: 800;
}

.ea-angle-label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 700;
}

/* Bright, legible axis badges */
.ea-axis-tag {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 5px;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.ea-axis-tag--x {
  background: var(--ea-red-soft);
  color: var(--ea-red-text);
  border: 1px solid var(--ea-red);
}

.ea-axis-tag--y {
  background: var(--ea-green-soft);
  color: var(--ea-green-text);
  border: 1px solid var(--ea-green);
}

.ea-axis-tag--z {
  background: var(--ea-blue-soft);
  color: var(--ea-blue-text);
  border: 1px solid var(--ea-blue);
}

.ea-angle-inputs-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding-top: 0.1rem;
}

.ea-angle-input-box {
  display: inline-flex;
  align-items: center;
  background: var(--ea-panel-bg);
  border: 1px solid var(--ea-border-strong);
  border-radius: 7px;
  padding: 0.14rem 0.45rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ea-angle-input-box:focus-within {
  border-color: var(--ea-accent);
  box-shadow: 0 0 0 2px var(--ea-accent-soft);
}

.ea-num-input {
  width: 82px;
  padding: 0.14rem 0.2rem;
  font-size: 0.86rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 700;
  text-align: right;
  border: none;
  outline: none;
  background: transparent;
  color: var(--ea-text);
  -moz-appearance: textfield;
  appearance: textfield;
}

.ea-num-input::-webkit-outer-spin-button,
.ea-num-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.ea-num-unit {
  font-size: 0.84rem;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--ea-text-muted);
  margin-left: 0.15rem;
  user-select: none;
}

.ea-rad-readout {
  font-size: 0.74rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--ea-text-muted);
  min-width: 58px;
  text-align: left;
}

/* 4th Panel: Step-by-Step Rotation Simulation Card */
.ea-sim-card {
  align-items: stretch;
  justify-content: flex-start;
  gap: 0.45rem;
}

.ea-sim-preset-btns {
  display: inline-flex;
  gap: 0.28rem;
}

.ea-pill-btn--xs {
  padding: 0.22rem 0.46rem;
  font-size: 0.72rem;
}

.ea-sim-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
  gap: 0.42rem;
}

.ea-sim-mode-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.28rem;
}

.ea-step-btns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.28rem;
}

.ea-play-btn {
  padding: 0.36rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 6px;
  border: 1px solid var(--ea-accent);
  background: var(--ea-accent);
  color: #ffffff;
  cursor: pointer;
}

.ea-scrubber-slider-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.ea-scrubber-slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--ea-accent);
}

.ea-scrubber-caption {
  font-size: 0.72rem;
  color: var(--ea-text);
  font-weight: 600;
  line-height: 1.32;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: var(--ea-panel-bg);
  border: 1px solid var(--ea-border);
  border-radius: 6px;
  padding: 0.28rem 0.45rem;
}

/* Section 3: High-Quality KaTeX LaTeX Matrices Layout */
.ea-latex-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.15rem;
}

.ea-latex-panel--2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  align-items: stretch;
}

@media (max-width: 1024px) {
  .ea-latex-panel--2col {
    grid-template-columns: 1fr;
  }
}

.ea-latex-eq-block {
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: var(--ea-panel-alt);
  border: 1px solid var(--ea-border);
  overflow-x: auto;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ea-latex-eq-block .katex-display {
  margin: 0.2rem 0;
}

.ea-latex-eq-block .katex {
  font-size: 1.02rem;
  color: var(--ea-text);
}

/* Section 4 & 5: Two-Column Info Grids */
.ea-two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  align-items: stretch;
}

@media (max-width: 860px) {
  .ea-two-col-grid {
    grid-template-columns: 1fr;
  }
}

.ea-subbox {
  padding: 0.9rem 1rem;
  border-radius: 9px;
  background: var(--ea-panel-alt);
  border: 1px solid var(--ea-border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ea-subbox.active-branch {
  border: 2px solid var(--ea-accent);
  background: var(--ea-accent-soft);
}

.ea-dof-bar-bg {
  width: 100%;
  height: 11px;
  background: var(--ea-panel-bg);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--ea-border-strong);
}

.ea-dof-bar-fill {
  height: 100%;
  transition: width 0.15s ease, background-color 0.15s ease;
}

.ea-code-line {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.83rem;
  line-height: 1.65;
}

.ea-latex-aligned-box {
  overflow-x: auto;
  padding: 0.25rem 0.1rem;
}

.ea-latex-aligned-box .katex-display {
  margin: 0.15rem 0;
  text-align: left;
}

.ea-latex-aligned-box .katex-display > .katex {
  text-align: left;
}

.ea-latex-aligned-box .katex {
  font-size: 0.96rem;
  color: var(--ea-text);
}