/* desktop.css — 桌面环境:壁纸/顶栏/窗口/菜单/桌面图标 */
.desktop {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 700px at 70% -10%, rgba(79, 142, 247, 0.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(110, 207, 138, 0.10), transparent 55%),
    var(--bg-desktop);
  display: flex;
  flex-direction: column;
}

/* 桌面图标 */
.desktop-icons {
  flex: 1;
  padding: 14px;
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(auto-fill, 84px);
  gap: 8px;
  align-content: start;
}
.desktop-icon {
  width: 76px;
  height: 84px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  user-select: none;
}
.desktop-icon:hover { background: rgba(255, 255, 255, 0.08); }
.desktop-icon .d-ico { font-size: 28px; }
.desktop-icon .d-label {
  font-size: 11px;
  color: var(--text-bright);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
  text-align: center;
  max-width: 74px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 顶栏 */
.topbar {
  height: 38px;
  background: var(--bg-topbar);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 10px;
  flex: 0 0 38px;
}
.tb-btn {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 15px;
  color: var(--text);
}
.tb-btn:hover { background: var(--bg-hover); }
.tb-clock { font-size: 12px; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.topbar-center { flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 6px; }

/* 窗口 */
.windows {
  position: absolute;
  inset: 38px 0 0 0;
  pointer-events: none;
  z-index: 10;
}
.window {
  position: absolute;
  min-width: 320px;
  min-height: 200px;
  background: var(--bg-window);
  border: 1px solid var(--border);
  border-radius: var(--radius-window);
  box-shadow: var(--shadow-window);
  display: flex;
  flex-direction: column;
  pointer-events: auto;
  overflow: hidden;
}
.window.active { border-color: var(--accent); z-index: 20; }
.window-titlebar {
  height: 36px;
  background: var(--bg-window-title);
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 8px;
  flex: 0 0 36px;
  cursor: default;
  user-select: none;
}
.window-titlebar .wt-ico { font-size: 14px; }
.window-titlebar .wt-title { flex: 1; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.window-titlebar .wt-btns { display: flex; gap: 4px; }
.window-titlebar .wt-btn {
  width: 24px; height: 24px;
  border-radius: 5px;
  display: grid; place-items: center;
  font-size: 12px;
  color: var(--text-dim);
}
.window-titlebar .wt-btn:hover { background: var(--bg-hover); color: var(--text); }
.window-titlebar .wt-close:hover { background: var(--danger); color: #fff; }
.window-body { flex: 1; overflow: auto; position: relative; }
.window-body::-webkit-scrollbar { width: 8px; }

/* 窗口大小控制 */
.window-resize-se { position: absolute; right: 0; bottom: 0; width: 14px; height: 14px; cursor: nwse-resize; }

/* 应用菜单 */
.app-menu {
  position: absolute;
  top: 40px;
  left: 10px;
  width: 200px;
  background: var(--bg-window);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-window);
  padding: 6px;
  z-index: 50;
}
.app-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 7px;
  font-size: 13px;
  cursor: pointer;
}
.app-menu-item:hover { background: var(--bg-hover); }
.app-menu-item .app-ico { font-size: 17px; }