:root{
  --borRad1: 20px;
  --colPri: #eb6b08;
  --colSec: rgba(234,183,112,0.23);
  --colBg: #f5f5f5;
}

.calculator-container {
    max-width: 700px;
    margin: 30px auto;
    padding: 30px;
    background-color: #fff;
    border-radius: 40px;
    background-color: var(--colSec);
}

.calculator-container h1, .calculator-container h2, .calculator-container h3 {
    color: var(--colPri);
    margin-bottom: 15px;
}
.calculator-container h1 { text-align: center; margin-bottom: 25px;}
.calculator-container h2 { margin-top: 0; border-bottom: 2px solid #e0e0e0; padding-bottom: 10px;}
.calculator-container h3 { margin-top: 20px; color: var(--colPri);  }


.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
    color: #444;
}

.form-group input[type="number"],
.form-group select {
    width: 100%; /* Usa tutta la larghezza */
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: var(--borRad1);
    font-size: 1em;
    box-sizing: border-box; /* Include padding e border nella width */
}
/* Specificità per input/select area */
.form-group input#area {
    width: calc(65% - 8px);
    margin-right: 8px;
    display: inline-block;
    vertical-align: middle;
}
.form-group select#area-unit {
     width: calc(35% - 8px);
     display: inline-block;
     vertical-align: middle;
}

.form-group small {
    display: block;
    font-size: 0.85em;
    color: #666;
    margin-top: 6px;
}

button#calculate-btn {
    display: block;
    width: 100%;
    padding: 14px 20px;
    background-color: var(--colPri); /* Verde */
    color: white;
    border: none;
    border-radius: var(--borRad1);
    font-size: 1.2em; /* Pulsante più evidente */
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 25px; /* Spazio sopra il pulsante */
}

button#calculate-btn:hover {
    background-color: var(--colPri); /* Verde più scuro */
}

.results-container {
    margin-top: 35px;
    padding: 25px;
    background-color: var(--colBg);
    border-radius: var(--borRad1);
}

.results-container p,
.results-container li {
    margin-bottom: 10px;
    font-size: 1.05em;
}

.results-container strong {
    color: var(--colPri);
}

.results-container hr {
    border: 0;
    height: 1px;
    background-color: var(--colSec);
    margin: 20px 0;
}

.result-section {
    margin-top: 5px;
    padding-top: 5px;
}
.result-section:first-of-type { /* Rimuove il bordo sopra il primo blocco risultati */
     /* Questo non funzionerà come previsto perché i primi P non sono dentro result-section */
     /* Si può aggiungere una classe specifica al primo blocco se serve */
}

.result-section h3 {
     margin-bottom: 10px;
}
.result-section small {
    font-size: 0.8em;
    color: #555;
    display: block;
    line-height: 1.4;
}

#tips-list {
    padding-left: 20px; /* Indenta lista puntata */
    list-style: disc; /* Usa pallini */
}
#tips-list li {
     margin-bottom: 8px;
}

.warning-text {
    color: #856404; /* Giallo/marrone scuro per warning */
    background-color: #fff3cd; /* Giallo chiaro */
    border: 1px solid #ffeeba;
    padding: 10px;
    border-radius: var(--borRad1);
    font-size: 0.95em !important;
    margin-top: 10px;
}
.warning-text strong {
    color: #665103;
}

.error-message {
    margin-top: 20px;
    padding: 12px;
    background-color: #ffdddd;
    color: #d8000c;
    border-radius: var(--borRad1);
    text-align: left; /* Allinea a sinistra per leggere meglio gli errori multipli */
}

.disclaimer {
    font-size: 0.9em;
    text-align: center;
    color: #c0392b;
    margin-top: 30px;
    padding: 12px;
    background-color: #f8d7da;
    border-radius: var(--borRad1);
}
.disclaimer strong {
    color: #721c24;
}

/* Responsive adjustments */
@media (max-width: 650px) {
    .form-group input#area,
    .form-group select#area-unit {
        width: 100%;
        display: block;
        margin-right: 0;
        margin-bottom: 10px;
    }
     .form-group select#area-unit {
        margin-bottom: 0;
    }
    .calculator-container {
        padding: 20px;
    }
    h1 { font-size: 1.5em;}
}