body {
    background:#f4f6f8;
    font-family: Arial, sans-serif;
    margin:0;
    padding:40px;
}

.card {
    max-width: 780px;        /* PIÙ LARGA */
    margin:auto;
    background:white;
    padding:35px;            /* PIÙ SPAZIO INTERNO */
    border-radius:14px;
    box-shadow:0 4px 18px rgba(0,0,0,0.10);
}

h2 {
    margin-top:0;
    font-size:30px;          /* PIÙ GRANDE */
    font-weight:700;
    color:#003366;
}

label {
    margin-top:18px;
    display:block;
    font-weight:600;
    font-size:15px;
}

input {
    width:100%;
    padding:12px;
    margin-top:6px;
    border:1px solid #c5c5c5;
    border-radius:8px;
    font-size:16px;
}

/* --- BLOCCO LINEA PALLET --- */
.linea {
    background:#eef1f5;
    padding:20px;
    border-radius:12px;
    border-left:5px solid #0077c8;
    margin-bottom:15px;
}

/* Griglia a 3 colonne */
.grid-3 {
    display:grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap:15px;
}

/* Griglia a 2 colonne */
.grid-2 {
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:15px;
}

/* Bottoni modalità */
.modo-btns {
    display:flex;
    gap:10px;
    margin-top:10px;
}

.modo-btns button {
    flex:1;
    padding:10px;
    border-radius:8px;
    font-size:15px;
    cursor:pointer;
    border:none;
}

.btn-main {
    width:100%;
    padding:16px;
    margin-top:30px;
    background:#0077c8;
    color:white;
    border:none;
    border-radius:10px;
    font-size:20px;
    cursor:pointer;
}

.btn-sec {
    width:100%;
    padding:14px;
    background:#dae6f3;
    border:none;
    color:#003366;
    border-radius:8px;
    margin-top:15px;
    cursor:pointer;
}

.btn-delete {
    background:#ffdddd;
    color:#b20000;
    padding:10px 14px;
    border-radius:8px;
    cursor:pointer;
    border:none;
}

.resultado {
    margin-top:25px;
    background:#eaf2ff;
    padding:18px;
    border-radius:10px;
    font-weight:600;
    color:#003366;
    font-size:20px;
}
.operativa {
    margin-top: 20px;
    background: #fff7e6;
    padding: 15px;
    border-left: 4px solid #ffa500;
    border-radius: 8px;
    font-size: 14px;
    color: #444;
    line-height: 1.4;
}
.operativa strong {
    color: #cc7a00;
}