/* === 1. VARIABILI E RESET === */
        
         :root {
            --primary-color: #A4D65E;
            --text-dark: #111111;
            --text-grey: #666666;
            --bg-white: #FFFFFF;
            --bg-light: #F9FAFB;
            --border-color: #E5E7EB;
            --sidebar-width: 260px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            overflow-x: hidden;
        }
        
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            color: var(--text-dark);
            background: var(--bg-white);
            line-height: 1.5;
            overflow-x: hidden;
        }
        /* === 2. LAYOUT GENERALE === */
        
        .site-container {
            display: grid;
            grid-template-columns: var(--sidebar-width) 1fr;
            min-height: 100vh;
            width: 100%;
        }
        /* === 3. SIDEBAR DESKTOP === */
        
        .sidebar {
            background: var(--bg-white);
            border-right: 1px solid var(--border-color);
            padding: 40px 24px;
            height: 100vh;
            position: sticky;
            top: 0;
            display: flex;
            flex-direction: column;
            z-index: 100;
        }
        
        .brand-link {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-dark);
            margin-bottom: 48px;
        }
        
        .brand-logo {
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
        }
        
        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        
        .nav-menu {
            list-style: none;
        }
        
        .nav-item {
            margin-bottom: 8px;
        }
        
        .nav-link {
            text-decoration: none;
            color: var(--text-grey);
            padding: 12px 16px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 500;
            transition: 0.2s;
        }
        
        .nav-link:hover {
            background: var(--bg-light);
            color: var(--text-dark);
        }
        
        .nav-link.active {
            background: var(--bg-light);
            color: var(--text-dark);
            font-weight: 700;
        }
        
        .nav-link svg {
            width: 20px;
            stroke-width: 2;
        }
        /* === 4. HEADER MOBILE === */
        
        .mobile-header {
            display: none;
        }
        /* === 5. MAIN CONTENT & BLOG HEADER === */
        
        .main-content {
            position: relative;
            width: 100%;
            overflow: hidden;
        }
        
        .blog-header-section {
            padding: 80px 60px 40px;
            background: radial-gradient(circle at top right, rgba(164, 214, 94, 0.1), transparent 50%);
        }
        
        .blog-title {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 900;
            letter-spacing: -1.5px;
            margin-bottom: 16px;
        }
        
        .blog-subtitle {
            font-size: 1.2rem;
            color: var(--text-grey);
            max-width: 600px;
            line-height: 1.6;
        }
        /* === 6. CATEGORY FILTERS === */
        
        .category-filters {
            display: flex;
            gap: 12px;
            padding: 0 60px 40px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        
        .category-filters::-webkit-scrollbar {
            display: none;
        }
        
        .filter-tag {
            padding: 10px 20px;
            border-radius: 50px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-grey);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: 0.2s;
            white-space: nowrap;
            text-decoration: none;
        }
        
        .filter-tag:hover {
            border-color: var(--primary-color);
            color: var(--text-dark);
        }
        
        .filter-tag.active {
            background: var(--text-dark);
            color: white;
            border-color: var(--text-dark);
        }
        /* === 7. FEATURED ARTICLE === */
        
        .content-wrapper {
            padding: 0 60px 80px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .featured-article {
            display: flex;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 24px;
            overflow: hidden;
            margin-bottom: 60px;
            transition: 0.3s;
            text-decoration: none;
            color: inherit;
        }
        
        .featured-article:hover {
            border-color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
        }
        
        .featured-img {
            flex: 1.2;
            background-size: cover;
            background-position: center;
            min-height: 350px;
            border-right: 1px solid var(--border-color);
        }
        
        .featured-content {
            flex: 1;
            padding: 50px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-grey);
            margin-bottom: 16px;
            font-weight: 500;
        }
        
        .badge {
            background: #e8f5e9;
            color: #166534;
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 700;
            text-transform: uppercase;
            font-size: 0.75rem;
            letter-spacing: 0.5px;
        }
        
        .featured-content h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        
        .featured-content p {
            color: var(--text-grey);
            font-size: 1.1rem;
            line-height: 1.6;
            margin-bottom: 24px;
        }
        
        .read-more {
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-dark);
        }
        /* === 8. BLOG GRID === */
        
        .blog-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }
        
        .blog-card {
            border: 1px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            text-decoration: none;
            color: var(--text-dark);
            transition: 0.3s;
            display: flex;
            flex-direction: column;
            background: var(--bg-white);
        }
        
        .blog-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary-color);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
        }
        
        .blog-card-img {
            height: 220px;
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-color);
        }
        
        .blog-card-content {
            padding: 30px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .blog-card-content h3 {
            font-size: 1.3rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        
        .blog-card-content p {
            color: var(--text-grey);
            font-size: 0.95rem;
            margin-bottom: 24px;
            flex-grow: 1;
        }
        /* Effetto di comparsa nuovi articoli */
        
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in-card {
            animation: fadeIn 0.6s ease-out forwards;
        }
        /* PAGINATION */
        
        .load-more-container {
            text-align: center;
            margin-top: 60px;
        }
        
        .btn-outline {
            display: inline-block;
            padding: 14px 32px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
            transition: 0.2s;
            cursor: pointer;
        }
        
        .btn-outline:hover {
            border-color: var(--text-dark);
            background: var(--bg-light);
        }
        /* === 9. NEWSLETTER CTA === */
        
        .newsletter-section {
            margin-top: 80px;
            padding: 60px;
            background: linear-gradient(135deg, #111 0%, #222 100%);
            border-radius: 32px;
            text-align: center;
            color: white;
        }
        
        .newsletter-section h2 {
            font-size: 2.2rem;
            font-weight: 900;
            margin-bottom: 16px;
            letter-spacing: -1px;
            color: white;
        }
        
        .newsletter-section p {
            font-size: 1.1rem;
            color: #aaa;
            max-width: 600px;
            margin: 0 auto 30px;
        }
        
        .form-group {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
            gap: 10px;
        }
        
        .form-group input {
            flex: 1;
            padding: 16px 20px;
            border-radius: 12px;
            border: 1px solid #444;
            background: #222;
            color: white;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        
        .form-group input:focus {
            border-color: var(--primary-color);
        }
        
        .btn-primary {
            background: var(--primary-color);
            color: var(--text-dark);
            border: none;
            padding: 16px 32px;
            border-radius: 12px;
            font-weight: 800;
            cursor: pointer;
            transition: 0.2s;
        }
        
        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
        }
        /* === 10. FOOTER === */
        
        .site-footer {
            padding: 80px 60px;
            border-top: 1px solid var(--border-color);
            background: var(--bg-light);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 60px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer-grid h4 {
            margin-bottom: 24px;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .footer-grid ul {
            list-style: none;
            color: var(--text-grey);
        }
        
        .footer-grid li {
            margin-bottom: 12px;
        }
        
        .footer-grid a {
            text-decoration: none;
            color: var(--text-grey);
            transition: 0.2s;
        }
        
        .footer-grid a:hover {
            color: var(--primary-color);
        }
        /* === 11. RESPONSIVE MOBILE === */
        
        .mobile-nav {
            display: none;
        }
        
        @media (max-width: 992px) {
            .site-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: none;
            }
            .site-footer {
                padding-bottom: 120px;
            }
            .mobile-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 16px 20px;
                background: rgba(255, 255, 255, 0.8);
                backdrop-filter: blur(12px);
                position: fixed;
                top: 0;
                width: 100%;
                z-index: 1000;
                border-bottom: 1px solid var(--border-color);
            }
            .blog-header-section {
                padding: 100px 20px 30px;
            }
            .category-filters {
                padding: 0 20px 30px;
            }
            .content-wrapper {
                padding: 0 20px 60px;
            }
            .featured-article {
                flex-direction: column;
            }
            .featured-img {
                min-height: 250px;
                border-right: none;
                border-bottom: 1px solid var(--border-color);
            }
            .featured-content {
                padding: 30px 20px;
            }
            .featured-content h2 {
                font-size: 1.6rem;
            }
            .newsletter-section {
                padding: 40px 20px;
                border-radius: 20px;
            }
            .form-group {
                flex-direction: column;
            }
            .form-group input,
            .btn-primary {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .mobile-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                width: 100%;
                background: white;
                border-top: 1px solid var(--border-color);
                padding: 12px;
                justify-content: space-around;
                z-index: 1000;
            }
            .mobile-nav-item {
                text-decoration: none;
                color: var(--text-grey);
                font-size: 0.7rem;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 4px;
            }
            .mobile-nav-item.active {
                color: var(--text-dark);
                font-weight: 700;
            }
            .mobile-nav-item svg {
                width: 22px;
            }
            .more-menu-overlay {
                position: fixed;
                bottom: 75px;
                left: 10px;
                right: 10px;
                background: white;
                transform: translateY(150%);
                transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                padding: 20px;
                display: flex;
                flex-direction: column;
                gap: 12px;
                box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.1);
                border-radius: 20px;
                z-index: 999;
            }
            .more-menu-overlay.open {
                transform: translateY(0);
            }
            .more-menu-overlay a {
                text-decoration: none;
                color: var(--text-dark);
                padding: 12px;
                background: var(--bg-light);
                border-radius: 12px;
                font-weight: 500;
            }
        }
        /* === MAPPATURA COLORI UNICI E DISTINGUIBILI === */
        /* 1. Recensioni -> TURCHESE / CYAN (Unico, molto diverso dal blu) */
        
        [data-category="Recensioni"],
        [data-filter="Recensioni"].active {
            --cat-bg: #ecfeff;
            --cat-text: #0891b2;
            --cat-border: #22d3ee;
        }
        /* 2. Intelligenza Artificiale -> FUCSIA / MAGENTA (Distinto dal viola e dal rosso) */
        
        [data-category="Intelligenza Artificiale"],
        [data-filter="Intelligenza Artificiale"].active {
            --cat-bg: #fdf2f8;
            --cat-text: #be185d;
            --cat-border: #f472b6;
        }
        /* 3. Apprendimento -> GIALLO (Chiaro e solare) */
        
        [data-category="Apprendimento"],
        [data-filter="Apprendimento"].active {
            --cat-bg: #fefce8;
            --cat-text: #854d0e;
            --cat-border: #eab308;
        }
        /* 4. Visione Artificiale -> VERDE (Smeraldo scuro) */
        
        [data-category="Visione Artificiale"],
        [data-filter="Visione Artificiale"].active {
            --cat-bg: #f0fdf4;
            --cat-text: #166534;
            --cat-border: #4ade80;
        }
        /* 5. Reti Neurali -> ROSSO (Acceso) */
        
        [data-category="Reti Neurali"],
        [data-filter="Reti Neurali"].active {
            --cat-bg: #fef2f2;
            --cat-text: #991b1b;
            --cat-border: #f87171;
        }
        /* 6. Teoria dei calcolatori -> ARANCIONE (Vivido) */
        
        [data-category="Teoria dei calcolatori"],
        [data-filter="Teoria dei calcolatori"].active {
            --cat-bg: #fff7ed;
            --cat-text: #9a3412;
            --cat-border: #fb923c;
        }
        /* === APPLICAZIONE AUTOMATICA === */
        
        .badge {
            background: var(--cat-bg, #f3f4f6);
            color: var(--cat-text, #374151);
            border: 1px solid var(--cat-border, #e5e7eb);
            padding: 5px 12px;
            border-radius: 8px;
            font-weight: 800;
            text-transform: uppercase;
            font-size: 0.75rem;
            letter-spacing: 0.5px;
            display: inline-block;
        }
        
        .filter-tag.active {
            background: var(--cat-bg) !important;
            color: var(--cat-text) !important;
            border-color: var(--cat-border) !important;
            font-weight: 800;
        }
        /* Default per "Tutti" */
        
        .filter-tag.active[data-filter="all"] {
            background: var(--text-dark) !important;
            color: white !important;
            border-color: var(--text-dark) !important;
        }