/* --- AI OBSERVER THEME SYSTEM --- */
    :root {
      /* Palette */
      --bg-deep: #0a0a0a;
      /* Nero profondo */
      --bg-card: #111111;
      /* Grigio scuro per le card */
      --bg-hover: #161616;
      --text-main: #e0e0e0;
      --text-muted: #a0a0a0;

      /* Accenti Neon */
      --neon-cyan: #00F3FF;
      /* Colore primario */
      --neon-green: #39FF14;
      /* Hardware/Status OK */
      --neon-purple: #BD00FF;
      /* Analisi/Editorial */

      /* Bordi e Glow */
      --border-dim: #333333;
      --border-active: rgba(0, 243, 255, 0.3);

      /* Spaziatura */
      --container-width: 1200px;
    }

    /* Reset & Base */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-deep);
      color: var(--text-main);
      font-family: 'Inter', system-ui, sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    h1,
    h2,
    h3,
    .mono-font {
      font-family: 'JetBrains Mono', 'Fira Code', monospace;
      letter-spacing: -0.5px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.12s;
    }

    /* Layout Wrapper */
    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* --- HEADER --- */
    header {
      border-bottom: 1px solid var(--border-dim);
      padding: 1.2rem 0;
      margin-bottom: 2.5rem;
      background: rgba(10, 10, 10, 0.9);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .nav-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1.2rem;
      flex-wrap: wrap;
    }

    .logo-block {
      display: flex;
      flex-direction: column;
      gap: 0.2rem;
    }

    .logo-main {
      font-size: 1.1rem;
      text-transform: uppercase;
      color: #ffffff;
    }

    .logo-main span {
      color: var(--neon-cyan);
    }

    .logo-sub {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .nav-links {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
      align-items: center;
      justify-content: flex-end;
    }

    .nav-links a {
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
      padding: 0.4rem 0.7rem;
      border-radius: 999px;
      border: 1px solid transparent;
      transition: color 0.12s, border-color 0.12s, background-color 0.12s;
    }

    .nav-links a:hover {
      color: var(--text-main);
      border-color: var(--border-dim);
      background-color: var(--bg-hover);
    }

    .nav-pill-disabled {
      opacity: 0.7;
      cursor: default;
      border-color: var(--border-dim);
    }

    .nav-cta {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }

    .nav-cta:hover {
      background: var(--neon-cyan);
      color: #000;
    }

    /* --- DROPDOWN MENU --- */
    .nav-dropdown {
      position: relative;
      display: inline-block;
    }

    .nav-dropdown-toggle {
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--neon-cyan);
      padding: 0.4rem 0.7rem;
      border-radius: 999px;
      border: 1px solid var(--neon-cyan);
      background: rgba(0, 243, 255, 0.05);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      transition: all 0.2s ease;
    }

    .nav-dropdown-toggle:hover {
      background: rgba(0, 243, 255, 0.15);
      box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
    }

    .nav-dropdown-toggle::after {
      content: '▼';
      font-size: 0.6rem;
      transition: transform 0.2s ease;
    }

    .nav-dropdown:hover .nav-dropdown-toggle::after {
      transform: rotate(180deg);
    }

    .nav-dropdown-menu {
      position: absolute;
      top: calc(100% + 0.5rem);
      right: 0;
      background: var(--bg-card);
      border: 1px solid var(--neon-cyan);
      border-radius: 8px;
      padding: 0.5rem;
      min-width: 240px;
      box-shadow: 0 8px 24px rgba(0, 243, 255, 0.2), 0 0 40px rgba(0, 243, 255, 0.1);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s ease;
      z-index: 1000;
    }

    .nav-dropdown:hover .nav-dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .nav-dropdown-menu a {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.7rem 1rem;
      color: var(--text-primary);
      text-decoration: none;
      border-radius: 4px;
      font-size: 0.85rem;
      transition: all 0.2s ease;
      border: 1px solid transparent;
    }

    .nav-dropdown-menu a:hover {
      background: rgba(0, 243, 255, 0.1);
      border-color: var(--neon-cyan);
      transform: translateX(4px);
    }

    .nav-dropdown-menu a::before {
      font-size: 1.2rem;
    }

    /* --- SEARCH FORM IN HEADER --- */

    .search-form {
      display: flex;
      flex-wrap: nowrap;
      align-items: center;
      gap: 0.4rem;
    }

    .search-input {
      background: #101010;
      border-radius: 999px;
      border: 1px solid var(--border-dim);
      padding: 0.35rem 0.8rem;
      color: var(--text-main);
      font-size: 0.8rem;
      min-width: 180px;
    }

    .search-input::placeholder {
      color: var(--text-muted);
    }

    .search-input:focus {
      outline: none;
      border-color: var(--neon-cyan);
      box-shadow: 0 0 0 1px rgba(0, 243, 255, 0.4);
    }

    .search-btn {
      border-radius: 999px;
      border: 1px solid var(--neon-cyan);
      background: transparent;
      color: var(--neon-cyan);
      font-size: 0.75rem;
      font-family: 'JetBrains Mono', monospace;
      padding: 0.3rem 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      cursor: pointer;
    }

    .search-btn:hover {
      background: var(--neon-cyan);
      color: #000;
    }

    /* --- HERO --- */

    .hero {
      display: grid;
      grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
      gap: 2rem;
      margin-bottom: 2.5rem;
      align-items: stretch;
    }

    .hero-main h1 {
      font-size: 2rem;
      line-height: 1.2;
      margin-bottom: 0.8rem;
    }

    .hero-main h1 span {
      color: var(--neon-cyan);
    }

    .hero-main p {
      font-size: 0.98rem;
      color: var(--text-muted);
      max-width: 520px;
      margin-bottom: 1.1rem;
    }

    .hero-chips {
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    .hero-chip {
      font-size: 0.8rem;
      font-family: 'JetBrains Mono', monospace;
      border-radius: 999px;
      border: 1px solid var(--border-dim);
      padding: 0.35rem 0.75rem;
      color: var(--text-main);
      background: radial-gradient(circle at left, rgba(0, 243, 255, 0.12), transparent);
    }

    .hero-chip-secondary {
      background: radial-gradient(circle at left, rgba(189, 0, 255, 0.16), transparent);
      color: var(--text-muted);
    }

    .hero-side-panel {
      background: var(--bg-card);
      border-radius: 10px;
      border: 1px solid var(--border-dim);
      padding: 1.1rem 1.3rem;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    }

    .hero-side-title {
      font-size: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
      margin-bottom: 0.6rem;
    }

    .hero-list {
      list-style: none;
      font-size: 0.86rem;
      color: var(--text-main);
    }

    .hero-list li+li {
      margin-top: 0.35rem;
    }

    /* --- SECTION HEADER --- */

    .section-header {
      margin-bottom: 1.4rem;
    }

    .section-header h2,
    .section-header h1 {
      font-size: 1.25rem;
      margin-bottom: 0.3rem;
    }

    .section-header p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* --- GRID SYSTEM / NEWS GRID --- */

    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 2rem;
      padding-bottom: 4rem;
    }

    /* --- TECH CARD --- */

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: 8px;
      padding: 1.5rem;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card:hover {
      border-color: var(--neon-cyan);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 243, 255, 0.1);
    }

    .card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--neon-cyan);
      opacity: 0;
      transition: 0.2s;
    }

    .card:hover::before {
      opacity: 1;
    }

    /* Image rendering */
    .card img,
    article img,
    .article-detail img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      object-position: center;
    }

    .card-tag {
      font-size: 0.75rem;
      text-transform: uppercase;
      color: var(--neon-cyan);
      border: 1px solid rgba(0, 243, 255, 0.2);
      padding: 4px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 0.6rem;
      font-family: 'JetBrains Mono', monospace;
    }

    .card-tag-secondary {
      color: var(--neon-purple);
      border-color: rgba(189, 0, 255, 0.4);
      margin-left: 0.4rem;
    }

    .card-tag-ai {
      color: var(--neon-green);
      border-color: rgba(57, 255, 20, 0.4);
      margin-left: 0.4rem;
    }

    /* Credibility Badges */
    .credibility-badge {
      margin-left: 0.4rem;
      font-size: 0.7rem;
      opacity: 0.9;
      font-weight: 600;
    }

    .credibility-highest {
      /* Official AI Labs - gold/green */
      background: rgba(16, 185, 129, 0.15) !important;
      border-color: #10b981 !important;
      color: #10b981 !important;
    }

    .credibility-high {
      /* Trusted sources - blue */
      background: rgba(59, 130, 246, 0.15) !important;
      border-color: #3b82f6 !important;
      color: #3b82f6 !important;
    }

    .credibility-medium {
      /* News sources - purple */
      background: rgba(139, 92, 246, 0.15) !important;
      border-color: #8b5cf6 !important;
      color: #8b5cf6 !important;
    }

    .credibility-low {
      /* Blogs/aggregators - orange */
      background: rgba(245, 158, 11, 0.15) !important;
      border-color: #f59e0b !important;
      color: #f59e0b !important;
    }

    .credibility-lowest {
      /* Unverified - red */
      background: rgba(239, 68, 68, 0.15) !important;
      border-color: #ef4444 !important;
      color: #ef4444 !important;
    }

    .card h3 {
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
      font-weight: 700;
      color: #fff;
    }

    .card h3 a:hover {
      color: var(--neon-cyan);
    }

    .card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .card-meta {
      font-size: 0.8rem;
      color: #555;
      font-family: 'JetBrains Mono', monospace;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid #222;
      padding-top: 1rem;
      gap: 0.75rem;
    }

    .card-meta a {
      color: var(--neon-cyan);
      font-size: 0.78rem;
    }

    .card-meta a:hover {
      color: #ffffff;
    }

    /* --- BUTTONS GENERICI --- */

    .btn-tech {
      background: transparent;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 0.5rem 1rem;
      font-family: 'JetBrains Mono', monospace;
      text-transform: uppercase;
      font-size: 0.8rem;
      cursor: pointer;
      display: inline-block;
    }

    .btn-tech:hover {
      background: var(--neon-cyan);
      color: #000;
    }

    /* --- ARTICLE DETAIL --- */

    .article-detail {
      background: var(--bg-card);
      border-radius: 10px;
      border: 1px solid var(--border-dim);
      padding: 1.6rem 1.8rem;
      box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
      margin-bottom: 3rem;
    }

    .article-header {
      margin-bottom: 1.2rem;
    }

    .article-title {
      font-size: 1.6rem;
      margin: 0.5rem 0 0.4rem;
    }

    .badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      align-items: center;
    }

    .meta-article {
      font-size: 0.8rem;
      font-family: 'JetBrains Mono', monospace;
      color: var(--text-muted);
      display: flex;
      flex-wrap: wrap;
      gap: 0.8rem;
      margin-top: 0.4rem;
    }

    .article-body {
      margin-top: 1rem;
      font-size: 0.98rem;
      color: var(--text-main);
    }

    .article-body p {
      margin: 0.4rem 0;
    }

    /* --- EDITOR COMMENT --- */

    .editor-comment {
      margin-top: 1.8rem;
      padding: 1rem 1.2rem;
      border-left: 3px solid var(--neon-purple);
      background: #141414;
      border-radius: 6px;
      font-size: 0.9rem;
    }

    .editor-comment h2 {
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--neon-purple);
      margin-bottom: 0.4rem;
    }

    .editor-comment-empty {
      border-left-color: var(--border-dim);
      color: var(--text-muted);
    }

    .editor-sign {
      margin-top: 0.6rem;
      font-style: italic;
      color: var(--text-muted);
    }

    /* --- ADMIN FORM --- */

    .admin-form {
      display: flex;
      flex-direction: column;
      gap: 0.9rem;
      margin-bottom: 3rem;
    }

    .admin-form label {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      font-size: 0.9rem;
    }

    .admin-form input,
    .admin-form textarea {
      background: #101010;
      border-radius: 6px;
      border: 1px solid var(--border-dim);
      padding: 0.5rem 0.7rem;
      color: var(--text-main);
      font: inherit;
    }

    .admin-form input:focus,
    .admin-form textarea:focus {
      outline: none;
      border-color: var(--neon-cyan);
      box-shadow: 0 0 0 1px rgba(0, 243, 255, 0.4);
    }

    .admin-form button {
      margin-top: 0.4rem;
      border-radius: 999px;
      border: 1px solid var(--neon-cyan);
      background: transparent;
      color: var(--neon-cyan);
      font-size: 0.8rem;
      font-family: 'JetBrains Mono', monospace;
      padding: 0.5rem 1.4rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      cursor: pointer;
    }

    .admin-form button:hover {
      background: var(--neon-cyan);
      color: #000;
    }

    /* --- FOOTER --- */

    footer {
      border-top: 1px solid var(--border-dim);
      padding: 1.2rem 0;
      margin-top: 2rem;
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* --- RESPONSIVE --- */

    /* Tablet Portrait (below 900px) */
    @media (max-width: 900px) {
      .nav-flex {
        flex-direction: column;
        align-items: flex-start;
      }

      .nav-links {
        justify-content: flex-start;
        flex-wrap: wrap;
      }

      .search-form {
        width: 100%;
        justify-content: flex-start;
      }

      .hero {
        grid-template-columns: minmax(0, 1fr);
        gap: 1rem;
        margin-bottom: 1.5rem;
      }

      .article-detail {
        padding: 1.3rem 1.2rem;
      }
    }

    /* Hamburger Menu */
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 0.5rem 0.75rem;
      border-radius: 4px;
      cursor: pointer;
      font-size: 1.2rem;
      z-index: 1001;
      min-width: 44px;
      min-height: 44px;
    }

    .mobile-menu-toggle:active {
      background: rgba(0, 243, 255, 0.1);
    }

    /* Mobile Large (below 768px) */
    @media (max-width: 768px) {
      /* Scale down typography */
      h1 {
        font-size: 1.8rem;
      }

      h2 {
        font-size: 1.4rem;
      }

      /* Navigation adjustments */
      header {
        padding: 0.5rem 0;
      }

      .nav-flex {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
      }

      /* Hide logo tagline and SVG on mobile */
      .logo-block > div > div:last-child,
      .logo-block svg {
        display: none !important;
      }

      .logo-block {
        flex: 1;
      }

      .logo-main {
        font-size: 1.1rem;
      }

      /* Show hamburger menu */
      .mobile-menu-toggle {
        display: block;
      }

      /* Create mobile menu container */
      .mobile-menu-container {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(10px);
        z-index: 1000;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 4rem 1.5rem 2rem;
      }

      .mobile-menu-container.mobile-open {
        display: block;
      }

      /* Navigation in mobile menu */
      .mobile-menu-container .nav-links {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        position: static;
        width: 100%;
        height: auto;
        background: transparent;
        padding: 0;
        margin-bottom: 2rem;
      }

      .mobile-menu-container .nav-links a,
      .mobile-menu-container .nav-links button {
        font-size: 1rem;
        padding: 0.75rem 1rem;
        text-align: left;
        border: 1px solid var(--border-dim);
        border-radius: 6px;
        background: var(--bg-card);
        min-height: 48px;
        display: flex;
        align-items: center;
        width: 100%;
      }

      /* Mobile dropdown styles */
      .mobile-menu-container .nav-dropdown {
        width: 100%;
      }

      .mobile-menu-container .nav-dropdown-toggle {
        width: 100%;
        font-size: 1rem;
        padding: 0.75rem 1rem;
        text-align: left;
        border: 1px solid var(--neon-cyan);
        border-radius: 6px;
        background: var(--bg-card);
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      .mobile-menu-container .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        margin-top: 0.5rem;
        border: none;
        background: transparent;
        padding: 0;
        box-shadow: none;
      }

      .mobile-menu-container .nav-dropdown.mobile-open .nav-dropdown-menu {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
      }

      .mobile-menu-container .nav-dropdown-menu a {
        font-size: 0.95rem;
        padding: 0.65rem 1rem;
        padding-left: 2rem;
        background: rgba(0, 243, 255, 0.05);
        border: 1px solid var(--border-dim);
      }

      /* Search form in mobile menu */
      .mobile-menu-container .search-form {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        position: static;
        width: 100%;
        height: auto;
        background: transparent;
        padding: 0;
      }

      .mobile-menu-container .search-input,
      .mobile-menu-container .search-btn {
        width: 100%;
        font-size: 16px;
        padding: 0.75rem 1rem;
        min-height: 48px;
      }

      /* Hide nav and search in their original positions on mobile */
      .nav-flex > .nav-links,
      .nav-flex > .search-form {
        display: none;
      }

      /* Container padding */
      .container {
        padding: 0 1rem;
      }

      /* Forms - prevent iOS zoom */
      input, textarea, select, button {
        font-size: 16px;
      }
    }

    /* Mobile Small (below 480px) */
    @media (max-width: 480px) {
      /* Further reduce typography */
      h1 {
        font-size: 1.5rem;
      }

      h2 {
        font-size: 1.25rem;
      }

      /* Compact navigation */
      .nav-links {
        gap: 0.4rem;
      }

      .nav-links a {
        font-size: 0.7rem;
        padding: 0.3rem 0.5rem;
      }

      /* Search form stacking */
      .search-form {
        flex-direction: column;
      }

      .search-input,
      .search-btn {
        width: 100%;
      }

      /* Container */
      .container {
        padding: 0 0.75rem;
      }

      /* Touch targets */
      button, .btn {
        min-height: 44px;
      }

      /* Logo scaling */
      .logo-block svg {
        width: 150px;
        height: 40px;
      }
    }

    /* Touch device optimizations */
    @media (hover: none) and (pointer: coarse) {
      a, button {
        min-height: 44px;
        padding: 0.5rem 0.75rem;
      }

      a:active, button:active {
        opacity: 0.7;
      }
    }