* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

#slideshow {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#slideshow img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

#slideshow .placeholder {
  color: #666;
  font-family: sans-serif;
  font-size: 24px;
}

#controls {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.8);
  padding: 10px 15px;
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s;
}

#controls.visible {
  opacity: 1;
}

#controls.fade {
  opacity: 0.3;
}

#controls button {
  background: #444;
  color: #fff;
  border: none;
  padding: 10px 16px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 4px;
}

#controls button:hover {
  background: #666;
}

#controls button:active {
  background: #777;
}

#counter {
  color: #aaa;
  font-family: sans-serif;
  font-size: 14px;
  min-width: 50px;
  text-align: center;
}