body{font-family:Poppins,sans-serif;margin:0;background:linear-gradient(135deg,#74ebd5,#acb6e5);color:#222;text-align:center}.header{background:#fff3;padding:20px;border-bottom:2px solid rgba(255,255,255,.3)}.dashboard{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;padding:20px}.card{background:#fff;border-radius:15px;padding:20px;box-shadow:0 4px 15px #0000001a;transition:transform .2s ease}.card:hover{transform:translateY(-5px)}.teach-box{margin-bottom:10px}input,select,button{padding:8px;margin:5px;border-radius:8px;border:1px solid #ccc}button{background:#4caf50;color:#fff;cursor:pointer}button:hover{background:#45a049}.result{font-size:1.2em;font-weight:700;margin-top:10px}.footer{background:#fff3;padding:10px;margin-top:20px}