body {
  margin: 0;
  background: #1e1e1e;
  font-family: 'Courier New', monospace;
  color: #0ff;
}

#desktop {
  display: flex;
  flex-wrap: wrap;
  padding: 1rem;
  height: calc(100vh - 40px);
}

.icon {
  width: 80px;
  margin: 1rem;
  text-align: center;
  cursor: pointer;
}

.icon img {
  width: 50px;
  filter: invert(100%);
}

.icon span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.8rem;
}

#taskbar {
  position: fixed;
  bottom: 0;
  left: 0;
  height: 40px;
  width: 100%;
  background: #111;
  color: #0ff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  box-shadow: 0 -2px 5px #000;
}

.start-button {
  background: #222;
  padding: 5px 15px;
  border: 1px solid #0ff;
  cursor: pointer;
}

#start-menu {
  position: absolute;
  bottom: 40px;
  left: 0;
  background: #111;
  border: 1px solid #0ff;
  display: none;
  z-index: 1000;
}

#start-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#start-menu li {
  padding: 10px;
  border-bottom: 1px solid #0ff2;
  cursor: pointer;
}

#start-menu li:hover {
  background: #0ff2;
}

.clock {
  font-size: 0.9rem;
}

.window {
  position: absolute;
  top: 100px;
  left: 100px;
  background: #000;
  border: 2px solid #0ff;
  width: 300px;
  display: none;
  z-index: 100;
}

.title-bar {
  background: #0ff;
  color: #000;
  padding: 5px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
}

.title-bar button {
  background: #000;
  color: #0ff;
  border: none;
  cursor: pointer;
}

.window-content {
  padding: 1rem;
}