/* 
 * WHAT: Sistema di reset globale, palette colori e token tipografici industriali.
 * WHY: Garantisce uniformità di resa visiva cross-browser ed elimina i comportamenti di rendering inconsistenti.
 * HOW: Variabili CSS (:root) per una gestione centralizzata e standardizzazione dei font sans-serif.
 * ART: Contrasti netti e palette calibrata (Navy/Azzurro Tech) per esprimere solidità software e ingegneristica.
*/
:root {
    --blu-navy: #0A1931;
    --azzurro: #3E92CC;
    --grigio-sfondo: #F4F7F6;
    --testo-scuro: #2D3748;
    --testo-chiaro: #ffffff;
    --blu-logo: #144b65;
    --border-color: #e2e8f0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--testo-scuro);
    line-height: 1.6;
    background-color: #ffffff;
    font-size: 15px;
    overflow-x: hidden; /* Previene tassativamente lo scroll laterale su mobile */
}

/* 
 * WHAT: Struttura adattiva per l'Header principale e l'area di navigazione.
 * WHY: Risolve i difetti di sovrapposizione su mobile eliminando l'altezza fissa rigida a 120px.
 * HOW: Layout basato su Flexbox e Grid con cambi di flusso condizionati dalle Media Queries.
 * ART: Uso dell'header come elemento fluttuante pulito, minimale e ad alto contrasto.
*/
header {
    background-color: #ffffff;
    padding: 20px 5%;
    min-height: 100px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo-img {
    max-height: 75px;
    width: auto;
    display: block;
}

.header-title {
    text-align: left;
    margin-right: auto;
    margin-left: 20px;
}

.header-title h1 {
    color: var(--blu-logo);
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0;
    line-height: 1;
    letter-spacing: 0.5px;
}

.header-title h2 {
    color: var(--blu-logo);
    font-size: 0.95rem;
    font-weight: 400;
    margin: 5px 0 0 0;
    letter-spacing: 0.5px;
}

nav {
    display: flex;
    align-items: center;
    gap: 25px;
}

nav a {
    color: var(--blu-navy);
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--azzurro);
}

/* 
 * WHAT: Componenti d'azione (Pulsanti) e Sezione Hero introduttiva.
 * WHY: Garantisce aree di interazione ampie per i dispositivi touch e un corretto contrasto dei testi.
 * HOW: Padding calibrati, sfondi in pendenza lineare (linear-gradient) e background-size: cover.
 * ART: Overlay scuro e profondo per far emergere i messaggi chiave con la massima forza visiva.
*/
.btn {
    display: inline-block;
    background-color: var(--azzurro);
    color: var(--testo-chiaro);
    padding: 14px 32px;
    text-decoration: none;
    font-weight: 700;
    border-radius: 6px; 
    margin-top: 15px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 15px;
    text-align: center;
}

.btn:hover {
    background-color: var(--blu-navy);
    transform: translateY(-2px);
}

.hero {
    background: linear-gradient(rgba(10, 25, 49, 0.82), rgba(10, 25, 49, 0.82)), url('PIC_CONS.PNG') center/cover no-repeat;
    color: var(--testo-chiaro);
    padding: 100px 6%;
    text-align: center;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero h2 {
    color: var(--testo-chiaro);
    font-size: 2.2rem;
    margin-bottom: 20px;
    line-height: 1.25;
    font-weight: 700;
    max-width: 900px;
}

.hero p {
    font-size: 1.15rem;
    max-width: 850px;
    margin: 0 auto;
    line-height: 1.65;
}

/* 
 * WHAT: Layout a Griglia e Contenitori delle sezioni informative.
 * WHY: Permette la visualizzazione modulare e responsive dei servizi, della storia e dei partner.
 * HOW: CSS Grid avanzato accoppiato a funzioni di dimensionamento automatico (minmax).
 * ART: Geometrie nette e pulite che evocano la precisione dell'automazione industriale.
*/
section {
    padding: 70px 6%;
}

.bg-light {
    background-color: var(--grigio-sfondo);
}

section h2.section-title {
    color: var(--blu-navy);
    font-size: 2.2rem;
    margin-bottom: 40px;
    text-align: center;
    font-weight: 700;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.4fr 1fr; 
    gap: 50px;
    align-items: center;
    max-width: 1150px;
    margin: 0 auto;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 35px;
    max-width: 1150px;
    margin: 0 auto;
}

.card {
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03); 
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.card img {
    width: 100%;
    height: 230px; 
    object-fit: cover;
    display: block;
}

.card-content {
    padding: 28px;
}

.card-content h3 {
    color: var(--blu-navy);
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 600;
}

.card-content ul {
    margin-top: 15px;
    margin-left: 20px; 
}

.card-content ul li {
    margin-bottom: 8px;
    color: var(--testo-scuro);
}

#storia p {
    font-size: 1.05rem;
    line-height: 1.65;  
    color: var(--testo-scuro);
    text-align: justify;
}

.profile-img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    border-radius: 8px; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

/* --- INTERFACCIA FORM DI CONTATTO --- */
.form-container {
    max-width: 650px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 22px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--blu-navy);
    font-size: 0.95rem;
}

.form-group input, .form-group textarea {
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-family: inherit;
    font-size: 16px;
    color: var(--testo-scuro);
    transition: border-color 0.2s ease;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--azzurro);
    outline: none;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 25px;
}

.form-checkbox input {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-checkbox label {
    font-size: 14px;
    line-height: 1.4;
    color: var(--testo-scuro);
}

.form-checkbox a {
    color: var(--azzurro);
    text-decoration: underline;
}

/* --- FOOTER STRUTTURATO --- */
footer {
    background-color: var(--blu-navy);
    color: var(--testo-chiaro);
    padding: 60px 5%;
    text-align: center;
    border-top: 3px solid var(--azzurro);
}

footer img {
    max-width: 130px;
    margin-bottom: 25px;
}

footer p {
    margin-bottom: 12px;
    font-size: 1.05rem;
    line-height: 1.5;
    opacity: 0.9;
}

footer p strong {
    color: var(--testo-chiaro);
}

/* ==========================================================================
   MEDIA QUERIES - OTTIMIZZAZIONE RADICALE MOBILE-FIRST (SMARTPHONE & TABLET)
   ========================================================================== */

@media (max-width: 1024px) {
    header {
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }

    .header-title {
        text-align: center;
        margin: 15px 0;
    }

    nav {
        justify-content: center;
        width: 100%;
    }
}

@media (max-width: 900px) {
    .grid-2 {
        grid-template-columns: 1fr !important; /* Incolonna elementi storia */
        gap: 35px;
    }
    
    #storia .grid-2 {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 768px) {
    /* --- AZZERAMENTO STRUTTURE RIGIDE --- */
    header {
        display: flex !important;
        flex-direction: column !important;
        padding: 20px 24px !important;
    }

    .logo-img {
        max-height: 55px !important;
        margin-bottom: 8px !important;
    }

    .header-title h1 {
        font-size: 1.9rem !important;
        text-align: center !important;
    }

    .header-title h2 {
        font-size: 0.85rem !important;
        text-align: center !important;
    }

    /* Riorganizzazione della navigazione in micro-schede touch friendly */
    nav {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        width: 100% !important;
        margin-top: 20px !important;
    }

    nav a {
        display: block !important;
        background-color: var(--grigio-sfondo) !important;
        color: var(--blu-navy) !important;
        text-align: center !important;
        padding: 12px 6px !important;
        margin-left: 0 !important;
        border-radius: 6px !important;
        font-size: 12px !important;
        font-weight: 700 !important;
    }

    nav a:last-child {
        grid-column: span 2 !important; /* Espande l'ultimo link (Contatti) su tutta la riga */
    }

    /* --- RESPONSIVE DELLE SEZIONI --- */
    .hero {
        padding: 50px 6% !important;
    }

    .hero h2 {
        font-size: 1.6rem !important;
    }

    .hero p {
        font-size: 1.05rem !important;
        text-align: left !important;
    }

    section {
        padding: 40px 6% !important;
    }

    section h2.section-title {
        font-size: 1.7rem !important;
        margin-bottom: 25px !important;
    }

    .grid-3 {
        grid-template-columns: 1fr !important; /* Incolonna le card servizi e partner */
        gap: 30px !important;
    }

    .card img {
        height: 190px !important;
    }

    .card-content {
        padding: 22px !important;
    }

    #storia p {
        font-size: 1rem !important;
        text-align: left !important;
    }

    .form-container {
        padding: 25px 20px !important;
    }

    footer {
        padding: 45px 6% !important;
    }

    footer p {
        font-size: 1rem !important;
    }
}