.trall-kalkylator {
    max-width: 620px;
    margin: 2rem auto;
    padding: 1.5rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

.trall-kalkylator h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #1a3c34;
}

.form-row {
    margin-bottom: 1.2rem;
}

.form-row label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.form-row input,
.form-row select {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
}

#berakna {
    width: 100%;
    padding: 1rem;
    background: #2e7d32;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    margin: 1.5rem 0;
}

#berakna:hover {
    background: #1b5e20;
}

.resultat-box {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    line-height: 1.6;
}

.footer {
    text-align: center;
    margin-top: 2rem;
    color: #64748b;
    font-size: 0.95rem;
}