body {
  margin: 0;
  font-family: Arial;
}

.sidebar-trigger {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
}

.sidebar-edge {
  position: absolute;
  top: 16px;
  left: 12px;
  font-size: 22px;
  cursor: pointer;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: #f7f7f8;
  color: #111;
  transform: translateX(-105%);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 12px;
  box-shadow: 4px 0 20px rgba(0,0,0,0.08);
}

.sidebar-trigger:hover .sidebar {
  transform: translateX(0);
}

.sidebar-trigger:hover .sidebar-edge {
  opacity: 0;
}

.sidebar.active {
  transform: translateX(0);
}

.sidebar a {
  display: block;
  padding: 10px 16px;
  color: #111;
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 4px;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 300px;
}

.sidebar a:hover {
  background: rgba(0, 0, 0, 0.06);
}

.main {
  transition: transform 0.4s ease, opacity 0.3s ease;
  padding: 20px 20px 20px 40px;
}

.main.shift {
  transform: translateX(10px);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.25); /* lighter overlay */
  opacity: 0;
  visibility: hidden;
  transition: 0.3s ease;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

.icon-btn {
  font-size: 22px;
  background: none;
  border: none;
  cursor: pointer;

  padding: 6px 10px;
  border-radius: 8px;

  transition: background 0.2s ease;
}

.icon-btn:hover {
  background: rgba(0,0,0,0.05);
}