.simulation-container{color:#fff;background:#1a1a1a;border-radius:12px;max-width:600px;margin:0 auto;padding:2rem;box-shadow:0 4px 20px #00000080}.simulation-form{flex-direction:column;gap:1.5rem;display:flex}.form-group{flex-direction:column;gap:.5rem;display:flex}label{color:#aaa;text-transform:uppercase;letter-spacing:.05em;font-size:.9rem;font-weight:600}input,select{color:#fff;background:#2a2a2a;border:1px solid #333;border-radius:6px;outline:none;padding:.75rem;font-size:1rem;transition:border-color .2s}input:focus,select:focus{border-color:#666}button{color:#000;cursor:pointer;text-transform:uppercase;letter-spacing:.05em;background:#fff;border:none;border-radius:6px;padding:1rem;font-size:1rem;font-weight:700;transition:transform .1s,opacity .2s}button:hover{opacity:.9}button:active{transform:scale(.98)}button:disabled{opacity:.6;cursor:not-allowed;transform:none}.result-container{background:#2a2a2a;border:1px solid #333;border-radius:8px;margin-top:2rem;padding:1.5rem;animation:.3s ease-out fadeIn}.result-row{color:#ccc;justify-content:space-between;margin-bottom:.5rem;display:flex}.result-row.total{color:#fff;border-top:1px solid #444;margin-top:1rem;padding-top:1rem;font-size:1.4rem;font-weight:700}.error-message{color:#ff6b6b;background:#ff6b6b1a;border:1px solid #ff6b6b33;border-radius:6px;margin-top:1rem;padding:1rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}