/* ── Orientation module layout ── */
html, body {
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ── Sub-nav bar (below main nav) ── */
.sub-nav-bar {
  height: 34px;
  background: var(--bg-primary);
  border-bottom: 1px solid rgba(108,99,255,0.1);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  flex-shrink: 0;
}

.sub-nav-item {
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}
.sub-nav-item:hover {
  color: var(--text-secondary);
  background: rgba(108,99,255,0.08);
}
.sub-nav-item.active {
  color: var(--text-primary);
  background: rgba(108,99,255,0.2);
}
.sub-nav-icon {
  width: 16px; height: 16px;
  flex-shrink: 0;
}

/* ── App container ── */
.app {
  display: flex;
  flex: 1;
  width: 100%;
  overflow: hidden;
}

/* ── Left: Display panel ── */
.display-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 32px;
  position: relative;
}
.display-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(108,99,255,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(233,69,96,0.06) 0%, transparent 60%);
  pointer-events: none;
}

h1 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  position: relative;
  z-index: 1;
}

.canvas-wrap {
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid rgba(108,99,255,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
}

#threeContainer {
  position: relative;
  width: 720px;
  height: 560px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
#threeContainer canvas { display: block; border-radius: var(--radius-sm); }

.canvas-label {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  position: relative;
  z-index: 1;
}

/* ── Right: Control panel ── */
.control-panel {
  width: 340px;
  background: var(--bg-slide);
  border-left: 1px solid rgba(108,99,255,0.12);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-1);
  text-align: center;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(108,99,255,0.2);
}

.section {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  border: 1px solid rgba(108,99,255,0.1);
}
.section h3 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-3);
  margin-bottom: 8px;
}

/* ── Accordion ── */
.accordion-header {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 0;
  transition: color 0.15s;
}
.accordion.active > .accordion-header { margin-bottom: 10px; }
.accordion:not(.active) > .accordion-header { margin-bottom: 0; }

.accordion-chevron {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: transform 0.15s;
}

.accordion-body {
  overflow: hidden;
}

/* ── Info icon (tooltip) ── */
.info-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: help;
  position: relative;
  line-height: 1;
}
.info-icon::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.68rem;
  font-weight: 400;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid rgba(108,99,255,0.2);
  white-space: pre-line;
  width: max-content;
  max-width: 240px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 20;
}
.info-icon:hover::after { opacity: 1; }

/* ── Gimbal lock warning ── */
.gimbal-warn {
  font-size: 0.8rem;
  color: #f5a623;
  cursor: help;
  position: relative;
  margin-left: 4px;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.gimbal-warn.visible {
  opacity: 1;
  pointer-events: auto;
}
.gimbal-warn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-primary);
  color: #f5a623;
  font-size: 0.68rem;
  font-weight: 400;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid rgba(245,166,35,0.3);
  white-space: pre-line;
  width: max-content;
  max-width: 240px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 20;
}
.gimbal-warn:hover::after { opacity: 1; }

/* ── Axis hint in Bunge labels ── */
.axis-hint {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ── Slider group ── */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 8px;
}
.slider-group:last-child { margin-bottom: 0; }
.slider-group label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
}
.slider-group label .param-name { font-weight: 500; }
.slider-group label .val {
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem;
  color: var(--accent-4);
  margin-left: auto;
}
.slider-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(108,99,255,0.15);
  outline: none;
}
.slider-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent-1);
  cursor: pointer;
  transition: transform 0.1s;
}
.slider-group input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
.slider-group input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent-1);
  cursor: pointer;
  border: none;
}

/* ── Rodrigues display ── */
.rod-display, .rod-axis-display {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
  font-size: 0.78rem;
}
.rod-label {
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}
.rod-value {
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem;
  color: var(--accent-4);
}
.rod-hint {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 6px;
  font-style: italic;
}

/* ── Quaternion number inputs ── */
.quat-row {
  display: flex;
  gap: 6px;
}
.quat-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.quat-field label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
}
.quat-field input[type="number"] {
  width: 100%;
  background: rgba(108,99,255,0.1);
  border: 1px solid rgba(108,99,255,0.2);
  border-radius: 5px;
  color: var(--text-primary);
  font-family: 'Fira Code', monospace;
  font-size: 0.68rem;
  padding: 4px 3px;
  text-align: center;
  outline: none;
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}
.quat-field input[type="number"]::-webkit-inner-spin-button,
.quat-field input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.quat-field input[type="number"]:focus {
  border-color: var(--accent-1);
}

/* ── Toggle (inversion) ── */
.toggle-group {
  display: flex; align-items: center;
  gap: 8px; margin-bottom: 8px;
}
.toggle-group label { font-size: 0.78rem; color: var(--text-secondary); cursor: pointer; }
.toggle-group input[type="checkbox"] { accent-color: var(--accent-1); width: 16px; height: 16px; cursor: pointer; }

/* ── Rotation matrix display ── */
.rot-matrix {
  font-family: 'Fira Code', monospace;
  font-size: 0.62rem;
  color: var(--text-secondary);
  background: rgba(108,99,255,0.08);
  border-radius: 6px;
  padding: 8px 10px;
  line-height: 1.6;
  white-space: pre;
}

.theme-btn {
  width: 100%;
  padding: 10px 0;
  margin-top: 8px;
  background: linear-gradient(135deg, rgba(108,99,255,0.25), rgba(233,69,96,0.18));
  border: 1px solid rgba(108,99,255,0.35);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.1s;
  letter-spacing: 0.02em;
}
.theme-btn:hover {
  background: linear-gradient(135deg, rgba(108,99,255,0.4), rgba(233,69,96,0.3));
  border-color: rgba(108,99,255,0.5);
  transform: translateY(-1px);
}

.control-panel::-webkit-scrollbar { width: 6px; }
.control-panel::-webkit-scrollbar-track { background: transparent; }
.control-panel::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.3); border-radius: 3px; }

/* light-bg handled by common.css */