body { margin: 0; background: #1a1a2e; background-size: cover; background-position: center; font-family: 'Segoe UI', sans-serif; overflow: hidden; color: white; }
#desktop { display: flex; flex-direction: column; flex-wrap: wrap; height: calc(100vh - 45px); padding: 20px; gap: 15px; align-content: flex-start; }

.icon { text-align: center; cursor: pointer; width: 90px; padding: 10px; border-radius: 10px; transition: 0.2s; border: 1px solid transparent; }
.icon:hover { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); backdrop-filter: blur(5px); }
.icon-sym { font-size: 42px; display: block; margin-bottom: 5px; filter: drop-shadow(0 4px 4px rgba(0,0,0,0.5)); }

.window { position: absolute; top: 40px; left: 80px; width: 600px; background: #f0f0f0; display: none; flex-direction: column; border: 1px solid #000; color: black; box-shadow: 0 15px 50px rgba(0,0,0,0.6); border-radius: 8px; z-index: 100; }
.win-head { background: linear-gradient(#0078d7, #005a9e); color: white; padding: 10px 15px; display: flex; justify-content: space-between; cursor: move; border-radius: 7px 7px 0 0; font-weight: bold; }
.win-body { padding: 15px; min-height: 350px; background: #fff; border-radius: 0 0 7px 7px; overflow-y: auto; }
.close-btn { cursor: pointer; background: #e74c3c; width: 18px; height: 18px; border-radius: 50%; text-align: center; line-height: 15px; font-size: 12px; }

#taskbar { position: fixed; bottom: 0; width: 100%; height: 45px; background: rgba(0,0,0,0.85); display: flex; align-items: center; justify-content: space-between; padding: 0 20px; box-sizing: border-box; backdrop-filter: blur(10px); z-index: 9999; border-top: 1px solid #333; }
.btn { border: none; padding: 8px 14px; cursor: pointer; color: white; background: #333; border-radius: 5px; font-size: 13px; }
.btn:hover { background: #555; }
.btn-danger { background: #c0392b; }
canvas { background: #000; display: block; margin: 0 auto; border: 2px solid #333; }