.subtitle {
    color:#ccc;
    margin-bottom:20px;
}

.input-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
    gap:15px;
    margin-bottom:20px;
}

label {
    display:block;
    margin-bottom:5px;
    color:#f2a900;
}

input {
    width:100%;
    padding:10px;
    border:1px solid #333;
    background:#222;
    color:#eee;
    border-radius:5px;
}

.calc-btn {
    width:100%;
    padding:15px;
    margin:20px 0;
    background:#f2a900;
    color:#000;
    border:none;
    border-radius:5px;
    font-size:18px;
    cursor:pointer;
}

.calc-btn:hover {
    opacity:0.9;
}

.results-box {
    background:#1b1b1b;
    border:1px solid #333;
    padding:20px;
    border-radius:8px;
}

.results-box p {
    margin:10px 0;
}