/* Sidebar - auto-hide on left, expand on hover (pure CSS) */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 70px;
  background: #222;
  color: white;
  transition: width 0.3s ease;
  overflow-x: hidden;
  z-index: 1000;
}

.sidebar:hover {
  width: 250px;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 60px 0 0 0;
}

.sidebar a {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  color: white;
  text-decoration: none;
  white-space: nowrap;
}

.sidebar a:hover {
  background: rgba(255, 255, 255, 0.1);
}

.sidebar span {
  opacity: 0;
  margin-left: 15px;
  transition: opacity 0.2s;
}

.sidebar:hover span {
  opacity: 1;
}

.sidebar-toggle {
  padding: 20px;
  font-size: 24px;
  cursor: default;
  color: white;
}

/* Push main content right when sidebar expanded */
.main-content {
  margin-left: 70px;
  transition: margin-left 0.3s ease;
}

.sidebar:hover ~ .main-content {
  margin-left: 250px;
}

/* Mobile: collapse sidebar, full-width content */
@media (max-width: 768px) {
  .sidebar {
    width: 0;
    overflow: hidden;
  }

  .sidebar:hover {
    width: 250px;
  }

  .main-content {
    margin-left: 0;
  }

  .sidebar:hover ~ .main-content {
    margin-left: 0;
  }
}