/* ================================================ */
/* 1. GLOBALI (Validi per tutte le pagine)          */
/* ================================================ */
html {
    box-sizing: border-box;
    scroll-behavior: smooth; 
    scroll-padding-top: 90px; 
}
*, *:before, *:after {
    box-sizing: inherit; 
}

body {
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    color: #333;
    overflow-x: hidden;
    width: 100%;
}
/* ================================================ */
/* FIX PER ELEMENTI CHE "SFONDANO" (IMMAGINI, ECC.) */
/* ================================================ */
img,
table,
pre,
.formula {
    max-width: 100%;
    height: auto; 
}

/* ================================================ */
/* 2. STILI HOMEPAGE (SOLO .page-home)              */
/* ================================================ */

.page-home {
    background-color: #f4f7f6; 
}

.page-home main {
    display: flex;
    flex-direction: column; 
    align-items: center;    
    justify-content: flex-start; /* Allinea in alto */
    padding: 3em 1em;
    text-align: center;
    min-height: 90vh;
}

/* --- HERO SECTION (Logo e Titoli) --- */
.hero { 
    margin-bottom: 3em; 
    max-width: 800px; 
}

/* Contenitore circolare per il logo */
.logo-wrapper {
    width: 130px; 
    height: 130px;
    margin: 0 auto 1.5em; 
    background: #fff;
    border-radius: 50%; 
    padding: 10px;      
    box-shadow: 0 8px 25px rgba(0, 90, 156, 0.15); 
    display: flex; 
    align-items: center; 
    justify-content: center;
}

.main-logo {
    width: 100%; 
    height: auto;
    border-radius: 50%; 
    object-fit: cover;
}

.page-home h1 {
    font-size: 3rem; 
    font-weight: 800; 
    line-height: 1.1;
    margin-bottom: 0.3em; 
    letter-spacing: -0.5px; 
    color: #222;
}

.text-highlight { 
    color: #005a9c; /* Blu istituzionale */
} 

.page-home h2 {
    font-size: 1.3rem; 
    font-weight: 400; 
    line-height: 1.5;
    color: #555; 
    margin-top: 0; 
    max-width: 600px; 
    margin: 0 auto;
}

/* --- CONTAINER DELLE CARD --- */
.page-home .cards-container {
    display: flex;
    flex-direction: row;  
    justify-content: center;
    align-items: stretch; 
    gap: 30px;          
    width: 100%;
    max-width: 1100px; 
    flex-wrap: wrap; 
}

/* ------------------------------------------------ */
/* STILE CONDIVISO PER LE CARD (Link e Bloccati)    */
/* ------------------------------------------------ */
.page-home .container .card {
    /* Layout interno della card */
    display: flex;
    flex-direction: column; 
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 30px 20px;
    
    /* Aspetto */
    background-color: #ffffff;
    border: 1px solid transparent;
    border-radius: 16px; 
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    
    /* Dimensioni Standard (per la Home) */
    flex: 1 1 280px; 
    min-height: 220px; 
    
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    
    position: relative; 
    overflow: hidden; 
    z-index: 1;
    margin: 0;
}

/* --- ELEMENTI INTERNI ALLA CARD --- */

/* Icona (SVG) */
.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    color: #005a9c; 
    transition: color 0.3s ease, transform 0.3s ease;
}

.card-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor; 
}

/* Titolo Card */
.card-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: #222;
    margin-bottom: 10px;
}

/* Sottotitolo / Status */
.card-status {
    font-size: 0.95rem;
    font-weight: 600;
    color: #888;
}

/* ------------------------------------------------ */
/* CARD ATTIVA (Link <a>)                           */
/* ------------------------------------------------ */
a.card:hover {
    transform: translateY(-8px); 
    box-shadow: 0 15px 30px rgba(0, 90, 156, 0.15);
    border-color: rgba(0, 90, 156, 0.3);
}

a.card:hover .card-icon {
    color: #004a80; 
    transform: scale(1.1); 
}

a.card .view-course { 
    color: #005a9c;
    transition: color 0.3s;
}

a.card:hover .view-course { 
    text-decoration: underline; 
}

/* ------------------------------------------------ */
/* CARD BLOCCATA (.button-locked)                   */
/* ------------------------------------------------ */
.button-locked.card {
    background-color: #fbfbfb;
    border-color: #eee;
    cursor: not-allowed;
    filter: grayscale(100%); 
    opacity: 0.7;
}

.button-locked.card .card-icon,
.button-locked.card .card-title,
.button-locked.card .card-status {
    color: #999; 
}

/* Rimuove vecchi effetti se presenti */
.button-locked.card::before { display: none; }


/* ================================================ */
/* AGGIUNTA: MENU NUMERATO (Per pagina FDP)         */
/* ================================================ */

/* Inizializza il contatore */
.page-home .container.menu-numerato {
    counter-reset: card-counter;
    /* AGGIUNTO: Spazio sopra per staccare dal titolo */
    margin-top: 50px; 
}

/* MODIFICA: Rimpicciolisce le card SOLO in questa pagina */
.page-home .container.menu-numerato .card {
    min-height: 150px; /* Molto più basso (era 220px) */
    padding: 20px;     /* Meno spazio interno */
}

/* Stile del Numero Gigante */
.page-home .container.menu-numerato .card::before {
    counter-increment: card-counter;
    content: counter(card-counter);
    
    position: absolute;
    top: -5px;     
    left: 15px;
    
    /* MODIFICA: Numero leggermente più piccolo per stare nella card ridotta */
    font-size: 4rem; 
    font-weight: 900;
    color: #e0e0e0; /* Grigio visibile */
    z-index: -1;     
    line-height: 1;
    font-family: sans-serif;
    transition: all 0.3s ease-out;
}

/* Gestione sovrapposizione testo */
.page-home .container.menu-numerato .card {
    z-index: 1;
}
.page-home .container.menu-numerato .card-title {
    z-index: 2; 
    position: relative;
    font-size: 1.1rem; /* Testo leggermente più piccolo */
    margin-bottom: 0;  /* Rimuove margine extra */
}

/* Effetto Hover */
.page-home .container.menu-numerato .card:hover::before {
    color: #dbeeff; 
    transform: scale(1.1) translateX(10px);
}

/* Link "Torna Indietro" */
.back-nav {
    position: absolute;
    top: 30px; left: 30px; z-index: 10;
}
.back-nav a {
    color: #555; text-decoration: none; font-weight: bold; font-size: 1.1rem;
    transition: color 0.2s, transform 0.2s; display: inline-block;
}
.back-nav a:hover {
    color: #005a9c; transform: translateX(-5px);
}
/* ================================================ */
/* 3. STILI PAGINE CONTENUTO (SOLO .page-content)   */
/* ================================================ */
.page-content {
    font-size: 1.1rem;      
    line-height: 1.7;     
    color: #2b2b2b; 
    background-color: #f4f5f7; 
    padding-top: 70px; 
}

/* Header */
.page-content .main-header {
    position: fixed; 
    top: 0; left: 0; width: 100%;
    background-color: #003d6b; 
    border-bottom: 1px solid #002f54; 
    z-index: 1000; 
}
.page-content .header-content {
    display: flex;
    justify-content: flex-start; 
    align-items: center;
    max-width: 1400px; 
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
}
.page-content .home-link {
    color: #ffffff;
    margin-right: 15px;
    display: flex; align-items: center;
    transition: color 0.2s;
}
.page-content .home-link:hover { color: #a0cfff; }
.page-content .menu-toggle {
    margin-left: auto; /* Spinge l'hamburger a destra */
}
.page-content .header-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ffffff;
    text-decoration: none;
}

/* Navigazione Mobile (Menu nascosto) */
.page-content .menu-toggle {
    display: none; 
    font-size: 2rem;
    background: none; border: none;
    cursor: pointer;
    color: #ffffff;
}
.page-content .mobile-nav {
    display: none; 
    position: fixed;
    top: 70px; left: 0; width: 100%;
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 999;
    overflow-y: auto;
    max-height: calc(100vh - 70px); 
}
.page-content .mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.page-content .mobile-nav li { text-align: left; margin-bottom: 0; }
.page-content .mobile-nav a {
    display: block; 
    padding: 15px 20px; 
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    color: #333;
    border-bottom: 1px solid #f0f0f0;
}
.page-content .mobile-nav a:hover { background-color: #f9f9f9; }
.page-content .mobile-nav.open { display: block; }
.page-content .mobile-nav .has-submenu > ul {
    display: none; background-color: #f9f9f9; padding-left: 0;
}
.page-content .mobile-nav .has-submenu > ul a {
    font-weight: normal; font-size: 1rem;
    padding-left: 2.5em; border-bottom: 1px solid #e9e9e9; color: #444;
}
.page-content .mobile-nav .has-submenu > ul a:hover { background-color: #eef5ff; }

/* Layout Sidebar */
.page-content .page-container {
    display: flex;
    max-width: 1400px; 
    margin: 2em auto 0;
    padding: 0 1.5em;
}
.page-content .sidebar-nav {
    width: 280px;      
    flex-shrink: 0;    
    margin-right: 2.5em;
}
.page-content .sidebar-nav nav {
    position: sticky;   
    top: 90px;          
    max-height: calc(100vh - 100px); 
    overflow-y: auto; 
    font-size: 0.95em;
    line-height: 1.6;
}
.page-content .sidebar-nav ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
    border-left: 3px solid #e0e0e0; 
}
.page-content .sidebar-nav > nav > ul > li { margin-bottom: 0.75em; }

/* Stile base link sidebar (sovrascritto poi da accordion) */
.page-content .sidebar-nav a {
    text-decoration: none;
    display: block;
    padding: 6px 10px 6px 1.2em; 
    border-left: 3px solid transparent; 
    margin-left: -3px; 
    transition: all 0.2s ease;
    color: #333; 
}
.page-content .sidebar-nav > nav > ul > li > a { font-weight: bold; }
.page-content .sidebar-nav > nav > ul > li > ul {
    display: none; margin-top: 0.5em; padding-left: 0.5em; 
}
.page-content .sidebar-nav > nav > ul > li > ul a {
    font-size: 0.95em; color: #555; font-weight: normal; 
    border-left: 3px solid transparent; margin-left: 0;
}
.page-content .sidebar-nav a:hover {
    color: #005a9c; background-color: #f0f7ff; border-left-color: #005a9c; 
}

/* Contenuto "Card" */
.page-content main {
    max-width: 900px;
    margin: 0;         
    padding: 2em 2.5em; 
    text-align: left;
    flex-grow: 1;      
    min-width: 0;      
    background: #ffffff;
    border-radius: 8px; 
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04); 
}

/* Stili Tipografici e Contenuto */
.page-content .contenuto { width: 100%; }
.page-content h1 { font-size: 2.5rem; line-height: 1.2; margin-bottom: 0; color: #222; }
.page-content h2 { font-size: 2.0rem; line-height: 1.2; color: #333; font-weight: 300; margin-top: 0; margin-bottom: 1.5em; }
.page-content h3 { font-size: 1.75rem; line-height: 1.3; color: #222; margin-top: 2.5em; border-bottom: 2px solid #eee; padding-bottom: 10px; }
.page-content h4 { font-size: 1.4rem; color: #005a9c; margin-top: 2em; } 
.page-content h5 { font-size: 1.2rem; font-weight: bold; color: #333; }
.page-content .formula {
    font-family: "Lucida Console", Monaco, monospace;
    font-size: 1.1em; color: #005a9c; width: 90%;          
    margin: 1.5em auto; padding: 1.2em;
    background-color: #f5faff; border-left: 5px solid #005a9c; 
    border-radius: 8px; overflow-x: auto;
}
.page-content mark { background-color: #fff9a0; padding: 2px 4px; border-radius: 3px; }
.page-content pre {
    width: 100%; margin: 0; padding: 1.2em;
    background-color: #fcfcfc; border: 1px solid #e7e7e7; 
    border-radius: 8px; overflow-x: auto;   
}
.page-content code { font-family: "Lucida Console", Monaco, monospace; font-size: 1rem; line-height: 1.6; color: #333; }

/* Syntax Highlighting */
.page-content pre code .com { color: #008000; font-style: italic; }
.page-content pre code .key { color: #0000ff; font-weight: bold; }
.page-content pre code .typ { color: #2b91af; }
.page-content pre code .str { color: #a31515; }
.page-content pre code .num { color: #d10a80; }
.page-content :not(pre) > code {
    font-family: monospace; background-color: #eee; padding: 3px 5px; border-radius: 4px; font-size: 0.95em;
}

/* Tabelle e Liste */
.table-scroll-container { width: 100%; overflow-x: auto; margin-bottom: 1.5em; border: 1px solid #ddd; }
.page-content table { width: 100%; min-width: 600px; border-collapse: collapse; font-size: 0.95em; }
.page-content th, .page-content td { border: 1px solid #ddd; padding: 10px; text-align: left; }
.page-content th { background-color: #f5f5ff; font-weight: bold; }
.page-content tr:nth-child(even) { background-color: #fafafa; }
.page-content .contenuto ul, .page-content .contenuto ol { text-align: left; margin: 1em 0; padding-left: 2.2em; list-style-position: outside; }
.page-content p + ul, .page-content p + ol { margin-top: 0.5em; }
.page-content li { text-align: left; margin-bottom: 0.5em; }
.page-content .nota-bene {
    font-style: italic; color: #555; margin: 1.5em 0;
    border-left: 4px solid #f0ad4e; padding: 0.5em 1.2em; background-color: #fffaf0; 
}
.page-content hr { margin: 3em 0; border: 0; border-top: 1px solid #ddd; }
.page-content .code-container { position: relative; width: 90%; margin: 1.5em auto; }
.page-content .code-container pre { margin: 0; width: 100%; }

/* Bottone Copia */
.page-content .copy-btn {
    position: absolute; top: 10px; right: 10px; z-index: 10;
    padding: 6px 10px; font-family: sans-serif; font-size: 0.85em; font-weight: bold;
    color: #555; background-color: #e0e0e0; border: 1px solid #ccc; border-radius: 5px;
    cursor: pointer; opacity: 0.7; transition: all 0.2s ease;
}
.page-content .copy-btn:hover { opacity: 1; background-color: #d0d0d0; }

/* ================================================ */
/* 5. STILI MENU ACCORDION + SCROLLSPY (CORRETTO)   */
/* ================================================ */
/* Inserisci questo blocco subito dopo la sezione 5 del tuo CSS */

/* 1. Forza l'apertura del sottomenu quando il padre ha la classe .open */
/* --- EVIDENZIAZIONE MIRATA SOTTOSEZIONI --- */

/* 1. Quando un FIGLIO è attivo (tramite scroll o click) */
.sidebar-nav ul ul li a.active,
.mobile-nav ul ul li a.active {
    color: #005a9c !important;        /* Testo Blu */
    font-weight: bold !important;      /* Grassetto */
    background-color: #d2e7ff !important; /* Sfondo azzurro */
    border-left: 4px solid #005a9c !important; /* Barra blu a sinistra */
    
    /* Reset dei margini per allineare la barra blu al bordo del sottomenu */
    margin-left: -10px; 
    padding-left: 25px !important;
    border-radius: 0 4px 4px 0;
}

/* 2. Mantieni il PADRE visivamente correlato ma non "acceso" come il figlio */
/* Se un figlio è attivo, il padre resta grassetto ma perde lo sfondo blu pieno */
.sidebar-nav li.has-submenu:has(ul li a.active) > a {
    color: #005a9c;
    font-weight: bold;
    border-left-color: #005a9c;
    background-color: transparent; /* Togliamo lo sfondo per darlo solo al figlio */
}

/* 3. Evita che l'evidenziatore (lo spillo) si sovrapponga */
.sidebar-nav ul ul li a.active .highlight-btn {
    color: #005a9c;
}
/* --- A. Stile Base dei Link --- */
.sidebar-nav li > a,
.mobile-nav li > a {
    position: relative;
    display: block;
    text-decoration: none;
    color: #333;
    
    /* PADDING CALIBRATO: 
       40px a sinistra (lascia spazio alla freccia)
       45px a destra (lascia spazio allo spillo/evidenziatore) */
    padding: 8px 45px 8px 40px !important; 
    
    border-left: 4px solid transparent; /* Bordo invisibile di base */
    transition: all 0.2s ease;
}

/* --- B. La Freccia (Posizionata a SINISTRA) --- */
/* Questa regola vale SOLO per i menu che hanno sottomenu */
li.has-submenu > a::before {
    content: ''; 
    display: inline-block;
    width: 8px; 
    height: 8px;
    border-style: solid;
    border-color: #888; /* Colore freccia spenta */
    border-width: 0 2px 2px 0; 
    
    /* POSIZIONAMENTO ASSOLUTO A SINISTRA */
    position: absolute;
    left: 18px;   /* Distanza fissa dal bordo sinistro: NON SI MUOVE MAI */
    top: 50%;     /* Centrata verticalmente */
    
    /* Rotazione base (freccia chiusa > punta a destra) */
    transform: translateY(-50%) rotate(-45deg);
    transition: transform 0.2s ease, border-color 0.2s;
    z-index: 2; /* Assicura che stia sopra lo sfondo */
}

/* Freccia quando il menu è APERTO */
li.has-submenu.open > a::before {
    /* Ruota verso il basso */
    transform: translateY(-70%) rotate(45deg);
    border-color: #333; /* Diventa più scura */
}

/* --- C. Stato ATTIVO (Scrollspy - Sezione Corrente) --- */
/* Questo si attiva quando scorri la pagina */
.sidebar-nav > nav > ul > li > a.active {
    color: #005a9c;             /* Blu Istituzionale */
    font-weight: 900;           /* Grassetto */
    font-size: 13pt;
    background-color: #d2e7ff;  /* Sfondo leggerissimo */
    border-left-color: #005a9c; /* Barra blu verticale a sinistra */
    
    /* Mantiene la freccia al suo posto senza ingrandimenti strani */
    transform: none; 
}

/* Assicuriamoci che i sottomenu NON si attivino graficamente */
.sidebar-nav ul ul a.active {
    font-weight: normal !important;
    background: transparent !important;
    border: none !important;
    color: #333 !important;
}

/* --- D. Bottone Evidenzia (Spillo a Destra) --- */
.highlight-btn {
    cursor: pointer; 
    font-size: 1.1rem; 
    padding: 2px 8px;
    color: #ccc; 
    transition: color 0.2s, transform 0.2s;
    
    /* Posizionato a destra in assoluto */
    position: absolute; 
    right: 5px; 
    top: 50%; 
    transform: translateY(-50%);
    z-index: 5;
}

.highlight-btn:hover { 
    color: #f0ad4e; 
    transform: translateY(-50%) scale(1.2); 
}

/* --- E. Gestione Evidenziazione Manuale (Lo spillo attivato) --- */
/* Link Evidenziato (Figlio) -> SFONDO GIALLO */
.page-content .sidebar-nav li.highlight > a,
.page-content .mobile-nav li.highlight > a {
    background-color: #fff9a0 !important; 
    color: #ba0000 !important;
    border-left-color: #ba0000 !important; 
}

/* Genitore con figli evidenziati -> SOLO BORDO ROSSO */
.page-content .sidebar-nav li.has-highlighted-child:not(.highlight) > a,
.page-content .mobile-nav li.has-highlighted-child:not(.highlight) > a {
    background-color: transparent; 
    color: #ba0000 !important; 
    border-left-color: #ba0000 !important; 
}

/* Colora le frecce di rosso se c'è un highlight */
.page-content .sidebar-nav li.highlight > a::before,
.page-content .sidebar-nav li.has-highlighted-child > a::before {
    border-color: #ba0000;
}

/* ================================================ */
/* 6. BOTTONE TORNA SU (GLOBALE)                    */
/* ================================================ */
#back-to-top {
    display: none; position: fixed; bottom: 30px; right: 30px; z-index: 9999;
    width: 50px; height: 50px; border: none; border-radius: 50%;
    background-color: #005a9c; color: white; font-size: 1.5rem;
    cursor: pointer; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    opacity: 0; transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s;
}
#back-to-top:hover { background-color: #004a80; transform: scale(1.1); }
/* ================================================ */
/* 8. BARRA DI RICERCA (Header)                     */
/* ================================================ */
/* ================================================ */
/* STILE SCRITTA "CERCA PER PAROLA CHIAVE"          */
/* ================================================ */

.search-label {
    color: #ffffff;          /* Scritta bianca */
    font-size: 0.85rem;      /* Leggermente più piccolo */
    font-weight: 500;
    white-space: nowrap;     /* Impedisce andata a capo */
    
    /* CREAZIONE DELLO SPAZIO DIVISO */
    margin-right: 15px;      /* Spazio esterno (tra la linea e l'input) */
    padding-right: 15px;     /* Spazio interno (tra la scritta e la linea) */
    border-right: 1px solid rgba(255, 255, 255, 0.4); /* Linea verticale semitrasparente */
    
    /* Allineamento verticale */
    display: flex;
    align-items: center;
    height: 100%;
}

/* Modifica al contenitore per allineare */
.search-container {
    gap: 0; /* Rimuoviamo il gap generico per gestire tutto con i margini precisi */
}

/* IMPORTANTE: Nascondi la scritta su Tablet e Mobile */
@media (max-width: 1100px) {
    .search-label {
        display: none;
    }
}
/* Contenitore flessibile */
.search-container {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.15); /* Sfondo semitrasparente */
    padding: 5px 10px;
    border-radius: 20px;
    margin-left: auto; /* Spinge a destra, ma prima del menu mobile */
    margin-right: 15px;
    border: 1px solid rgba(255,255,255,0.2);
}

/* Input di testo */
.search-container input {
    background: transparent;
    border: none;
    color: white;
    font-size: 0.95rem;
    width: 150px;
    outline: none;
}
.search-container input::placeholder { color: #ccc; }

/* Contatore (es. 1/5) */
#searchCounter {
    font-size: 0.85rem;
    color: #eee;
    margin: 0 8px;
    min-width: 40px;
    text-align: center;
    font-variant-numeric: tabular-nums; /* Evita che i numeri saltino */
}

/* Bottoni freccia */
.search-nav button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0 4px;
    transition: color 0.2s;
}
.search-nav button:hover { color: #ffd700; transform: scale(1.2); }

/* --- STILE DEL TESTO EVIDENZIATO --- */

/* Evidenziazione base (Giallo) */
mark.highlight {
    background-color: #fff176;
    color: black;
    padding: 0 2px;
    border-radius: 2px;
}

/* Evidenziazione attiva/corrente (Arancione) */
mark.highlight.active {
    background-color: #ff9800;
    color: white;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(255, 152, 0, 0.8);
}

/* Adattamento Mobile */
@media (max-width: 768px) {
    .search-container {
        display: none; /* Opzionale: nascondi su schermi piccolissimi o ridimensiona */
    }
}

/* ================================================ */
/* 7. MEDIA QUERY GLOBALE (Per Mobile)              */
/* ================================================ */
@media (max-width: 768px) {
    /* Home Mobile */
    .hero { margin-bottom: 2em; }
    .logo-wrapper { width: 100px; height: 100px; }
    .page-home h1 { font-size: 2.0rem; }
    .page-home h2 { font-size: 1.3rem; margin-bottom: 4em; }
    
    /* Le card vanno in colonna */
    .page-home .cards-container { 
        flex-direction: column; 
        gap: 20px; align-items: stretch; 
    }
    
    /* Su mobile le card sono più compatte in altezza */
    .page-home .container .card { 
        flex-basis: auto; width: 100%; min-height: 180px; padding: 25px 15px;
    }
    .card-icon { font-size: 3rem; margin-bottom: 10px; }
    
    /* Content Mobile */
    .page-content { padding-top: 60px; font-size: 1.05rem; }
    .page-content .main-header { height: 60px; }
    .page-content .header-content { height: 60px; padding: 0 15px; }
    .page-content .header-title { font-size: 1.1rem; }
    .page-content .page-container { padding: 0; margin: 0; }
    .page-content .sidebar-nav { display: none; } /* Nascondi sidebar */
    .page-content main { max-width: 100%; margin: 0; padding: 1.5em 1.2em; border-radius: 0; box-shadow: none; }
    
    .page-content h1 { font-size: 2.0rem; }
    .page-content h2 { font-size: 1.7rem; }
    
    /* Codice e tabelle 100% */
    .page-content .code-container, .page-content .formula, .page-content table { width: 100%; }
    .page-content .code-container pre { padding: 1em; }
    
    /* Menu Hamburger */
    .page-content .menu-toggle { display: block; }
    .page-content .mobile-nav { 
        display: block; /* Esiste nel DOM */
        position: fixed; top: 60px; left: 0; width: 280px; height: calc(100vh - 60px);
        background-color: #fdfdfd; border-right: 1px solid #ddd; z-index: 1001;
        overflow-y: auto;
        transform: translateX(-100%); /* Nascosto */
        transition: transform 0.3s ease-in-out;
    }
    .page-content .mobile-nav.open { transform: translateX(0); }
    
    /* Bottone Torna Su Mobile */
    #back-to-top { bottom: 15px; right: 15px; width: 45px; height: 45px; font-size: 1.3rem; }
}