body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #0078D7, #00B4FF);
  color: white;
  text-align: center;
  min-height: 100vh;
}

body.desktop-mode {
  background-image: url('windows10-wallpaper.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  color: black;
}

.window {
  position: absolute;
  top: 100px;
  left: 100px;
  width: 640px;
  background-color: rgba(255, 255, 255, 0.95);
  border: 2px solid #ccc;
  box-shadow: 0 0 20px rgba(0,0,0,0.4);
  border-radius: 4px;
  z-index: 10;
}

.title-bar {
  background-color: #0078D7;
  color: white;
  padding: 5px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  font-size: 1.1em;
  cursor: move;
}

.close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

.content {
  padding: 20px;
  text-align: center;
  color: #000;
}

canvas {
  border: 2px solid #000;
  background-color: #fff;
  cursor: crosshair;
}

/* タスクバー */
#taskbar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40px;
  background-color: #1c1c1c;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 12px;
  box-shadow: 0 -2px 5px rgba(0,0,0,0.3);
  z-index: 100;
}

.task-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.start-button {
  color: white;
  font-size: 20px;
  cursor: pointer;
}

.search-box {
  height: 24px;
  width: 200px;
  border-radius: 4px;
  border: none;
  padding: 0 8px;
  font-size: 14px;
}

.task-icons {
  display: flex;
  gap: 8px;
}

.task-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  cursor: pointer;
  border-radius: 4px;
  transition: transform 0.2s;
}

.task-icon:hover {
  transform: scale(1.1);
}

.clock {
  color: white;
  font-family: monospace;
  font-size: 14px;
  min-width: 60px;
  text-align: right;
  white-space: nowrap;
}

/* エクスプローラーウィンドウの中身 */
.explorer-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  padding: 10px;
  text-align: left;
}

/* フォルダ風アイコン */
.folder {
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  padding: 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: background-color 0.2s;
}

.folder:hover {
  background-color: #e0e0e0;
}
.start-menu {
  position: fixed;
  bottom: 40px;
  left: 10px;
  width: 200px;
  background-color: #2d2d2d;
  color: white;
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
  z-index: 200;
  font-size: 14px;
}

.start-header {
  background-color: #0078D7;
  padding: 8px;
  font-weight: bold;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
}

.start-items {
  display: flex;
  flex-direction: column;
}

.start-item {
  padding: 8px 12px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.start-item:hover {
  background-color: #444;
}
.notification-area {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-size: 14px;
}

// スタートメニュー表示切り替え
const startButton = document.querySelector(".start-button");
const startMenu = document.getElementById("startMenu");

startButton.addEventListener("click", () => {
  startMenu.style.display = (startMenu.style.display === "none" || startMenu.style.display === "") ? "block" : "none";
});