.wy-menu-vertical ul {
  display: block !important;
}
.wy-menu-vertical li.toctree-l1 > ul {
  display: block !important;
  max-height: none !important;
}
/* Hide any expand/collapse controls if present */
.toctree-expand, .wy-side-nav .toctree-expand {
  display: none !important;
}

/* Improve contrast: make sidebar links light and second-level slightly dimmer and indented */
.wy-menu-vertical a.reference.internal {
  color: rgba(255,255,255,0.95) !important;
}
.wy-menu-vertical li.toctree-l2 > a.reference.internal {
  color: rgba(255,255,255,0.82) !important;
  padding-left: 14px !important;
  display: block !important;
}
.wy-menu-vertical li.toctree-l3 > a.reference.internal {
  color: rgba(255,255,255,0.72) !important;
  padding-left: 28px !important;
}
.wy-menu-vertical a.reference.internal:hover {
  color: #ffffff !important;
}

/* Emphasize top-level entries (Spindle, Examples) */
.wy-menu-vertical li.toctree-l1 > a.reference.internal {
  font-weight: 700 !important;
  font-size: 1.05em !important;
  padding-left: 6px !important;
}

/* Slightly increase caption prominence */
.caption-text {
  color: rgba(255,255,255,0.98) !important;
  font-weight: 700;
}

/* Keep active/current links readable on dark sidebar */
.wy-menu-vertical li.current > a.reference.internal,
.wy-menu-vertical a.reference.internal:active,
.wy-menu-vertical a.reference.internal:focus {
  /* subtle translucent highlight, keep text color consistent */
  background-color: rgba(255,255,255,0.035) !important;
  color: inherit !important;
  box-shadow: none !important;
}

/* Gentle accent for top-level current items */
.wy-menu-vertical li.current.toctree-l1 > a.reference.internal {
  background-color: rgba(255,255,255,0.045) !important;
  font-weight: 700 !important;
  border-left: 3px solid rgba(255,255,255,0.10) !important;
  padding-left: 6px !important;
}