/* --- Sidebar and Overlay fix --- */
.sidebar {
  position: fixed;
  top: 48px;
  bottom: 0;
  left: 0;
  width: 85%;
  max-width: 320px;
  overflow-y: auto;
  background: #111;
  transform: translateX(-100%);
  transition: transform .3s ease;
  padding: 10px;
  z-index: 200;          /* ABOVE overlay */
  will-change: transform;
}
.sidebar.open { transform: translateX(0); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 150;           /* BELOW sidebar */
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.sidebar.open ~ .overlay {
  opacity: 1;
  pointer-events: all;
}

.content {
  margin-top: 48px;
  padding: 16px;
  transition: margin-left .3s ease;
}

/* Desktop layout */
@media (min-width: 900px) {
  .sidebar {
    transform: none !important;
    position: static;
    width: 280px;
    height: calc(100vh - 48px);
    z-index: auto;
  }
  .content {
    margin-left: 280px;
  }
  .overlay { display: none !important; }
}

/* Mobile layout */
@media (max-width: 899px) {
  .content {
    margin-left: 0 !important;
  }
}