/* --- GOOGLE FONTS --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Lora:ital,wght@0,400;0,700;1,400&display=swap');

/* --- VARIABILI DI STILE --- */
:root {
    --primary-color: #8a4baf;
    --primary-color-dark: #520a83;
    --secondary-color: #fde2f3;
    --background-color: #f9f7fb;
    --text-color: #333;
    --text-color-light: #666;
    --card-bg-color: #ffffff;
    --shadow-color: rgba(138, 75, 175, 0.1);
    --border-color: #e8e1ee;
    --success-bg: #f6fbf7;
    --success-border: #c8e6c9;
    --font-headings: 'Montserrat', sans-serif;
    --font-body: 'Lora', serif;
}

/* --- STILI GENERALI --- */
body { font-family: var(--font-body); margin: 0; background-color: var(--background-color); color: var(--text-color); line-height: 1.7; }
h1, h2, h3, h4, label, button, select { font-family: var(--font-headings); }
main { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }
/* NUOVO BLOCCO */
/* NUOVO BLOCCO */
header {
    background-color: #8a4baf; /* Colore di sfondo viola */
    color: white;
    padding: 1rem 0 1.5rem 0; /* Spazio sopra e sotto la fascia bianca */
    border-bottom-left-radius: 30px;
    border-bottom-right-radius: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.logo-background-container {
    background-color: white;
    width: 100%;
    padding: 1.5rem 0;
    text-align: center;
}

.header-logo-titolo {
    max-width: 450px;
    width: 80%;
    height: auto;
    display: block; /* Necessario per centrare con margin auto */
    margin: 0 auto; /* Centra l'immagine nel suo contenitore */
}

.header-content {
    text-align: center;
    padding: 0 1rem; /* Aggiunge spazio laterale al sottotitolo */
}

.sottotitolo {
    margin: 0;
    font-family: var(--font-body);
    font-style: italic;
    opacity: 0.9;
    font-size: 1.1rem;
}
section { background-color: var(--card-bg-color); padding: 2.5rem; border-radius: 12px; box-shadow: 0 8px 25px var(--shadow-color); border: 1px solid var(--border-color); }
.hidden { display: none !important; }

/* --- NAVIGAZIONE A SCHEDE --- */
.schede-nav { display: flex; justify-content: center; margin-bottom: 2rem; background-color: transparent; border-bottom: none; }
.tab-button { padding: 0.8rem 1.5rem; cursor: pointer; background-color: #fff; border: 1px solid var(--border-color); border-bottom: none; font-size: 1rem; font-weight: 600; color: var(--primary-color); transition: all 0.2s ease-in-out; margin: 0 -1px 0 0; }
.tab-button:first-child { border-top-left-radius: 8px; }
.tab-button:last-child { border-top-right-radius: 8px; }
.tab-button:hover { background-color: var(--secondary-color); }
.tab-button.active { background-color: var(--card-bg-color); position: relative; top: 1px; color: var(--primary-color-dark); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* --- CARD CATALOGO --- */
.grid-container { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2rem; }
.card { border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 4px 8px var(--shadow-color); overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; cursor: pointer; }
.card:hover { transform: translateY(-8px); box-shadow: 0 12px 28px var(--shadow-color); }
.card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.card-content { padding: 1rem 1.5rem; }
.card h3 { margin-bottom: 0.5rem; font-size: 1.2rem; }
.card .materiali { font-family: var(--font-body); font-style: italic; color: var(--text-color-light); }


/* --- STILI MODULI E FILTRI --- */
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--primary-color); }
.form-group input, .form-group select, .filtro-item, .suggerimenti-filtro select { 
    width: 100%; 
    padding: 0.8rem; 
    font-size: 1.05rem; 
    font-family: var(--font-body); 
    border: 1px solid var(--border-color); 
    border-radius: 8px; 
    box-sizing: border-box; 
    -webkit-appearance: none; 
    -moz-appearance: none; 
    appearance: none; 
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23cccccc%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E'); 
    background-repeat: no-repeat; 
    background-position: right .9em top 50%; 
    background-size: .65em auto;
    background-color: #fff;
    transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .filtro-item:focus, .suggerimenti-filtro select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 5px var(--secondary-color);
}
.form-hr { border: none; border-top: 1px solid var(--border-color); margin: 2rem 0; }
.calcolo-btn { display: block; width: 100%; padding: 0.8rem 1.5rem; margin-top: 1.5rem; font-size: 1.1rem; font-weight: bold; color: white; background: linear-gradient(45deg, var(--primary-color), #c86dd7); border: none; border-radius: 8px; cursor: pointer; transition: transform 0.2s; }
.calcolo-btn:hover { transform: scale(1.02); }

/* --- Scelta Filato e Tensione --- */
.choice-container { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 600px) { .choice-container { grid-template-columns: 1fr 1fr; } }
.choice-block { padding: 1rem; border: 2px solid var(--border-color); border-radius: 8px; transition: all 0.2s ease-in-out; }
.choice-block.active { border-color: var(--primary-color); background-color: #fdfafd; box-shadow: 0 0 10px var(--secondary-color); }
.choice-block label { display: flex; align-items: center; cursor: pointer; font-weight: 700; }
.choice-block input[type="radio"] { -webkit-appearance: none; -moz-appearance: none; appearance: none; width: 1.2em; height: 1.2em; border: 2px solid #ccc; border-radius: 50%; margin-right: 0.75rem; transition: all 0.15s; position: relative; background-color: #fff; }
.choice-block input[type="radio"]:checked { background-color: var(--primary-color); border-color: var(--primary-color); }
.choice-content { margin-top: 1rem; }
input[type="range"] { -webkit-appearance: none; width: 100%; background: transparent; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; height: 20px; width: 20px; border-radius: 50%; background: var(--primary-color); cursor: pointer; margin-top: -8px; }
input[type="range"]::-moz-range-thumb { height: 20px; width: 20px; border-radius: 50%; background: var(--primary-color); cursor: pointer; }
input[type="range"]::-webkit-slider-runnable-track { width: 100%; height: 4px; cursor: pointer; background: var(--secondary-color); border-radius: 5px; }
input[type="range"]::-moz-range-track { width: 100%; height: 4px; cursor: pointer; background: var(--secondary-color); border-radius: 5px; }
.tensione-labels { display: flex; justify-content: space-between; font-size: 0.9rem; padding: 0 5px; }

/* --- Risultati e Suggerimenti --- */
.risultato-box { margin-top: 2rem; padding: 0; background-color: var(--card-bg-color); border: 1px solid var(--border-color); border-radius: 12px; font-size: 1.1rem; overflow: hidden; box-shadow: 0 8px 25px var(--shadow-color); }
.risultato-box h4 { background-color: var(--success-bg); color: var(--primary-color-dark); margin: 0; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-color); }
.risultato-sezione { padding: 1.5rem; text-align: center; }
.risultato-valore { font-size: 1.8rem; font-weight: 700; color: var(--primary-color); }
.risultato-info { font-size: 0.9rem; color: var(--text-color-light); }
.risultato-finale { margin-top: 1rem; font-weight: 600; }
.suggerimenti-container { padding: 1.5rem; text-align: left; background-color: var(--background-color); }
.suggerimenti-container h4 { margin-top: 0; text-align: center; }
.suggerimenti-filtro { display: flex; gap: 1rem; align-items: center; justify-content: center; margin-bottom: 1rem; }
/* NUOVO BLOCCO */
/* NUOVO BLOCCO */
/* Applica lo stile a entrambe le liste di suggerimenti */
.suggerimenti-lista ul, .risultato-box ul {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 0 1.5rem; /* Spazio tra le colonne */
}

/* Su schermi grandi, usiamo due colonne per entrambe */
@media (min-width: 768px) {
    .suggerimenti-lista ul, .risultato-box ul {
        grid-template-columns: 1fr 1fr;
    }
}
.suggerimenti-lista li, .risultato-box ul li {
    display: flex;
    justify-content: space-between; /* Spinge gli elementi ai lati opposti */
    align-items: center;
    padding: 0.75rem 0.5rem; /* Aggiunto un po' di padding laterale */
    border-bottom: 1px solid var(--border-color);
}
.suggerimenti-lista li:last-child { border-bottom: none; }
.suggerimenti-lista .efficienza, .risultato-box .efficienza {
    font-weight: bold;
    color: #555;
    font-size: 0.9rem;
    white-space: nowrap;
    padding-left: 1.5rem; /* Aumentato lo spazio */
}
.suggerimenti-lista a, .risultato-box ul a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    font-family: var(--font-headings);
}
.suggerimenti-lista a:hover, .risultato-box ul a:hover {
    text-decoration: underline;
    color: var(--primary-color-dark);
}

/* --- Filtri Catalogo --- */
.filtri-container { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.filtro-item { flex: 1; min-width: 200px; }

/* --- Finestra Modale Tutorial --- */
.modale-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); display: flex; justify-content: center; align-items: center; z-index: 1000; }
.modale-content { background-color: var(--card-bg-color); padding: 2rem; border-radius: 12px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2); width: 90%; max-width: 800px; max-height: 90vh; overflow-y: auto; position: relative; }
.modale-close-btn { position: absolute; top: 10px; right: 15px; font-size: 2rem; color: #aaa; background: none; border: none; cursor: pointer; }

/* Layout del popup: video sopra, dettagli sotto */
.modale-video { margin-bottom: 1.5rem; }
.modale-video iframe { width: 100%; aspect-ratio: 16 / 9; border-radius: 8px; }
.modale-dettagli h3 { margin-top: 0; }

/* Navigazione a schede interna al popup */
.modale-schede-nav { display: flex; border-bottom: 1px solid var(--border-color); margin-bottom: 1.5rem; }
.modale-tab-button { padding: 0.75rem 1rem; cursor: pointer; background-color: transparent; border: none; border-bottom: 3px solid transparent; font-size: 1rem; font-weight: 600; color: var(--text-color-light); }
.modale-tab-button.active { color: var(--primary-color); border-bottom-color: var(--primary-color); }
.modale-tool-content { display: none; }
.modale-tool-content.active { display: block; }
.tool-wrapper { padding: 1rem 0; }
.tool-btn { display: block; width: 100%; padding: 0.8rem 1.5rem; font-size: 1rem; font-weight: bold; color: white; background: linear-gradient(45deg, var(--primary-color), #c86dd7); border: none; border-radius: 8px; cursor: pointer; transition: transform 0.2s; }
.tool-btn:hover { transform: scale(1.02); }
.info-tool { font-style: italic; color: var(--text-color-light); text-align: center; }
.tool-content-area { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }

/* --- NUOVO: Loading Spinner --- */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}
.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--secondary-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
/* NUOVO BLOCCO DA AGGIUNGERE */
.modale-azioni-tool {
    display: flex;
    flex-direction: column;
    gap: 0.75rem; /* Aggiunge spazio tra i pulsanti */
    margin-top: 1rem;
}
/* NUOVO BLOCCO DA AGGIUNGERE */
/* --- Stili per il Wizard del Calcolo Prezzo --- */
.prezzo-step {
    display: none; /* Nasconde tutti i passaggi di default */
}

.prezzo-step.active {
    display: block; /* Mostra solo il passaggio attivo */
    animation: fadeIn 0.5s ease-in-out;
}

.radio-button-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-button-group-vertical label {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.radio-button-group-vertical label:hover {
    border-color: var(--primary-color);
    background-color: var(--background-color);
}

.radio-button-group-vertical input[type="radio"]:checked + .radio-content {
    font-weight: bold;
}

.radio-button-group-vertical input[type="radio"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 1.2em;
    height: 1.2em;
    border: 2px solid #ccc;
    border-radius: 50%;
    margin-right: 1rem;
    transition: all 0.15s;
    position: relative;
    background-color: #fff;
    flex-shrink: 0;
}
.radio-button-group-vertical input[type="radio"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.radio-content {
    display: flex;
    flex-direction: column;
}

.radio-content strong {
    font-family: var(--font-headings);
    color: var(--text-color);
}

.radio-description {
    font-size: 0.9rem;
    color: var(--text-color-light);
    margin: 0;
    padding: 0;
    font-style: italic;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
/* NUOVO BLOCCO DA INCOLLARE */
.header-logo {
    height: 50px; /* Imposta un'altezza fissa per il logo */
    width: auto; /* La larghezza si adatterà in proporzione */
    margin-bottom: 0.5rem;
}

.header-content h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 1px; /* Aumenta leggermente lo spazio tra le lettere */
    text-transform: uppercase; /* Rende il titolo più "importante" */
}
/* --- Stili Guida nell'Header --- */
.header-content {
    text-align: center;
    flex-grow: 1; /* Occupa lo spazio centrale */
}
.header-content h1 {
    margin: 0;
}
.sottotitolo {
    margin: 0.5rem 0 0 0;
    font-family: var(--font-body);
    font-style: italic;
    opacity: 0.9;
    font-size: 1.1rem;
}
.guida-container {
    display: flex;
    gap: 1rem; /* Spazio tra i pulsanti guida */
}
.guida-btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: 20px;
    color: white;
    text-decoration: none;
    font-family: var(--font-headings);
    font-weight: 600;
    transition: all 0.2s ease-in-out;
    background-color: transparent;
    font-size: 0.9rem;
    cursor: pointer;
}
.guida-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: white;
}
/* --- CORREZIONE COLORE SFONDO --- */
body {
    background-color: #f4f4f9; /* Imposta lo sfondo generale su grigio chiaro */
}

.tab-content {
    background-color: #ffffff; /* Assicura che l'area di lavoro principale sia bianca */
}