/* =========================================================
   NUVOLA MAGAZINE — Main Stylesheet
   @version 4.0.0  @date 2026-05-09
   Ordine:
     1.  Variabili & Reset
     2.  Tipografia base
     3.  Breaking Ticker
     4.  Navbar & Search overlay
     5.  Mobile Nav
     6.  Layout & Section dividers
     7.  Hero Slider (Carousel)
     8.  Article Grid & Cards
     9.  Featured List
     10. Category Strip
     11. Articolo singolo (tipografia CNN/NYT)
     12. Footer
     13. Cookie Banner & Back-to-top
     14. Reveal (scroll animation)
     15. Responsive
   ========================================================= */


:root {
    --nm-primary:      #0c1a3a;
    --nm-accent:       #2563eb;
    --nm-accent-hover: #1d4ed8;
    --nm-text:         #111;
    --nm-muted:        #6b7280;
    --nm-border:       #e5e7eb;
    --nm-bg:           #fafafa;
    --nm-white:        #fff;
    --nm-serif:        'Playfair Display', Georgia, 'Times New Roman', serif;
    --nm-sans:         'Inter', -apple-system, sans-serif;
    --nm-art-serif:    'Source Serif 4', Georgia, 'Times New Roman', serif;
    --nm-mono:         'JetBrains Mono', monospace;
    --nm-max-w:        1280px;
    --nm-transition:   0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--nm-sans);
    background: var(--nm-bg);
    color: var(--nm-text);
    line-height: 1.65;
    font-weight: 400;
}

/* --- 2. TIPOGRAFIA BASE --------------------------------- */
h1, h2, h3, h4, h5, h6 { font-family: var(--nm-serif); }

/* --- 3. BREAKING TICKER (GPU OPTIMIZED) ----------------- */
.ticker-bar {
    background: var(--nm-primary);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 0.35rem 0;
    overflow: hidden;
    text-transform: uppercase;
}
.ticker-bar .ticker-label {
    background: #dc2626;
    padding: 0.15rem 0.6rem;
    font-weight: 700;
    border-radius: 2px;
    white-space: nowrap;
    font-size: 0.68rem;
    flex-shrink: 0;
}
.ticker-wrap { overflow: hidden; flex: 1; margin-left: 1rem; }
.ticker-track {
    display: flex;
    animation: tickerScroll 25s linear infinite;
    white-space: nowrap;
    will-change: transform; /* Forza layer compositing */
    transform: translate3d(0, 0, 0); /* Inizializza accelerazione GPU */
}
.ticker-track span {
    padding: 0 2rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    /* Rimossa opacity: 0.85 → i browser mobile ricalcolano il repaint ad ogni frame se c'è opacity animata */
}
.ticker-track span::before { content: '● '; color: var(--nm-accent); font-size: 0.6em; }
.ticker-track a {
    color: inherit;
    text-decoration: none;
}
.ticker-track a:hover { text-decoration: underline; }

@keyframes tickerScroll {
    0%   { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-50%, 0, 0); }
}

/* Mobile: durata ridotta + padding ottimizzato per schermi piccoli */
@media (max-width: 768px) {
    .ticker-track { animation-duration: 18s; }
    .ticker-bar { font-size: 0.68rem; }
    .ticker-track span { padding: 0 1.5rem; }
}

/* --- 4. NAVBAR ------------------------------------------ */
.site-nav {
    background: var(--nm-white);
    border-bottom: 1px solid var(--nm-border);
    padding: 0;
    position: relative;
    z-index: 100;
}
.site-nav .container { max-width: var(--nm-max-w); }
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--nm-primary);
}
.nav-brand img { height: 30px; width: auto; }
.nav-brand-text {
    font-family: var(--nm-serif);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.nav-brand-text small {
    display: block;
    font-family: var(--nm-sans);
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nm-muted);
    margin-top: -2px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0; padding: 0;
}
.nav-links a {
    display: block;
    padding: 0.5rem 0.85rem;
    font-size: 0.78rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--nm-text);
    text-decoration: none;
    transition: var(--nm-transition);
    border-radius: 4px;
}
.nav-links a i { margin-right: 0.3rem; font-size: 0.9rem; }
.nav-links a:hover,
.nav-links a.active {
    color: var(--nm-accent);
    background: rgba(37,99,235,0.06);
}
.nav-search-btn {
    background: none; border: none;
    color: var(--nm-text); font-size: 1.1rem;
    cursor: pointer; padding: 0.5rem;
    transition: var(--nm-transition);
}
.nav-search-btn:hover { color: var(--nm-accent); }
.mobile-toggle {
    display: none;
    background: none; border: none;
    font-size: 1.5rem; color: var(--nm-text);
    cursor: pointer; padding: 0.25rem;
}

/* Search overlay */
.search-overlay {
    position: fixed; inset: 0;
    background: rgba(255,255,255,0.97);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0; visibility: hidden;
    transition: var(--nm-transition);
}
.search-overlay.open { opacity: 1; visibility: visible; }
.search-overlay-inner { width: 100%; max-width: 600px; padding: 0 1.5rem; }
.search-overlay input {
    width: 100%; border: none;
    border-bottom: 2px solid var(--nm-primary);
    font-family: var(--nm-serif);
    font-size: 2rem;
    padding: 0.5rem 0;
    background: transparent; outline: none;
    color: var(--nm-text);
}
.search-overlay input::placeholder { color: #ccc; }
.search-overlay .close-search {
    position: absolute; top: 1.5rem; right: 1.5rem;
    background: none; border: none;
    font-size: 1.8rem; cursor: pointer;
    color: var(--nm-muted);
}

/* --- 5. MOBILE NAV OVERLAY ------------------------------ */
.mobile-nav-overlay {
    position: fixed; inset: 0;
    background: var(--nm-white);
    z-index: 1500;
    padding: 2rem;
    transform: translateX(100%);
    transition: transform 0.35s ease;
}
.mobile-nav-overlay.open { transform: translateX(0); }
.mobile-nav-overlay .close-nav {
    position: absolute; top: 1.5rem; right: 1.5rem;
    background: none; border: none;
    font-size: 1.8rem; cursor: pointer;
    color: var(--nm-text);
}
.mobile-nav-overlay a {
    display: block;
    font-family: var(--nm-serif);
    font-size: 1.5rem; font-weight: 600;
    color: var(--nm-text); text-decoration: none;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--nm-border);
    transition: var(--nm-transition);
}
.mobile-nav-overlay a:hover { color: var(--nm-accent); }
.mobile-nav-overlay a i { margin-right: 0.5rem; font-size: 1.2rem; }
.mobile-nav-overlay a.active { color: var(--nm-accent); }

/* --- 6. LAYOUT & DIVIDERS ------------------------------- */
.editorial-container {
    max-width: var(--nm-max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
}
.section-label {
    font-family: var(--nm-sans);
    font-size: 0.7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.15em;
    color: var(--nm-accent);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--nm-accent);
    margin-bottom: 1.5rem;
    display: inline-block;
}
.section-divider {
    border: none;
    border-top: 1px solid var(--nm-border);
    margin: 3rem 0;
}

/* --- 7. HERO SLIDER ------------------------------------- */
/* Thumbnails carousel */
.carousel-thumb-btn {
    transition: opacity 0.3s ease;
    border: 2px solid transparent !important;
}
.carousel-thumb-btn.active { border-color: var(--nm-accent) !important; }

/* --- 8. ARTICLE GRID & CARDS ---------------------------- */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.article-card-editorial {
    display: block; text-decoration: none;
    color: inherit; transition: var(--nm-transition);
}
.article-card-editorial:hover { color: inherit; }
.ace-img {
    position: relative; height: 240px;
    overflow: hidden; margin-bottom: 1rem;
    background: var(--nm-border);
    border-radius: 4px;
}
.ace-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
}
.article-card-editorial:hover .ace-img img { transform: scale(1.04); }
.ace-tag {
    font-family: var(--nm-sans);
    font-size: 0.65rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--nm-accent);
    margin-bottom: 0.4rem; display: block;
}
.ace-title {
    font-family: var(--nm-serif);
    font-size: 1.25rem; font-weight: 600;
    line-height: 1.25; margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.article-card-editorial:hover .ace-title { color: var(--nm-accent); }
.ace-excerpt {
    font-size: 0.88rem; color: var(--nm-muted);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ace-date {
    font-size: 0.72rem; color: #aaa;
    margin-top: 0.6rem; font-weight: 400;
    display: block;
}

/* --- 9. FEATURED LIST ----------------------------------- */
.featured-list-item {
    display: flex; gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--nm-border);
    text-decoration: none; color: inherit;
    transition: var(--nm-transition);
}
.featured-list-item:hover { color: inherit; }
.featured-list-item:first-child { padding-top: 0; }
.fli-img {
    width: 200px; height: 140px;
    flex-shrink: 0; overflow: hidden;
    background: var(--nm-border);
}
.fli-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease;
}
.featured-list-item:hover .fli-img img { transform: scale(1.04); }
.fli-body { display: flex; flex-direction: column; justify-content: center; }
.fli-tag {
    font-family: var(--nm-sans);
    font-size: 0.65rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--nm-accent); margin-bottom: 0.3rem;
}
.fli-title {
    font-family: var(--nm-serif);
    font-size: 1.2rem; font-weight: 600;
    line-height: 1.3; margin-bottom: 0.35rem;
}
.featured-list-item:hover .fli-title { color: var(--nm-accent); }
.fli-excerpt {
    font-size: 0.85rem; color: var(--nm-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --- 10. CATEGORY STRIP --------------------------------- */
.cat-strip {
    display: flex; gap: 0.5rem;
    overflow-x: auto; padding: 1rem 0;
    scrollbar-width: none;
}
.cat-strip::-webkit-scrollbar { display: none; }
.cat-chip {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1.1rem; border-radius: 50px;
    font-weight: 500; font-size: 0.82rem; white-space: nowrap;
    text-decoration: none; transition: var(--nm-transition);
    border: 1px solid var(--nm-border);
    color: var(--nm-text); background: var(--nm-white);
}
.cat-chip:hover, .cat-chip.active {
    border-color: var(--nm-accent);
    background: rgba(37,99,235,0.06);
    color: var(--nm-accent);
}
.cat-chip i { font-size: 1rem; }

/* --- 11. ARTICOLO SINGOLO — Tipografia CNN/NYT ----------- */
.single-article {
    --art-line:  1.82;
    --art-color: #1a1a1a;
    --art-muted: #6b7280;
    --art-accent:#2563eb;
}

/* Titolo */
.single-article .article-title {
    font-family: var(--nm-sans);
    font-weight: 800;
    font-size: clamp(1.65rem, 5vw, 2.5rem);
    line-height: 1.18;
    letter-spacing: -0.03em;
    color: var(--art-color);
    margin-bottom: 1rem;
}

/* Meta bar */
.single-article .article-meta {
    font-family: var(--nm-sans);
    font-size: .78rem; letter-spacing: .04em;
    text-transform: uppercase; color: var(--art-muted);
    border-bottom: 2px solid var(--nm-border);
    padding-bottom: 1rem; margin-bottom: 1.5rem;
}

/* Immagine hero */
.single-article figure {
    margin: 0 0 2rem; border-radius: 4px; overflow: hidden;
}
.single-article figure img {
    width: 100%; max-height: 500px;
    object-fit: cover; display: block;
}
.single-article figure figcaption {
    font-family: var(--nm-sans); font-size: .75rem;
    color: var(--art-muted); padding: .5rem .25rem 0;
    border-top: 1px solid var(--nm-border);
}

/* Corpo testo */
.article-content {
    font-family: var(--nm-art-serif);
    font-size: clamp(1.05rem, 2.5vw, 1.21rem);
    line-height: var(--art-line);
    color: var(--art-color); font-weight: 400;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
.article-content p { margin-bottom: 1.6em; orphans: 3; widows: 3; }

/* Capolettera */
.article-content > p:first-of-type::first-letter {
    font-family: var(--nm-sans); font-size: 3.8em; font-weight: 800;
    float: left; line-height: .8; margin: .06em .12em 0 0;
    color: var(--art-accent);
}

/* Titoli interni */
.article-content h2 {
    font-family: var(--nm-sans);
    font-size: clamp(1.25rem, 3vw, 1.55rem); font-weight: 700;
    line-height: 1.25; letter-spacing: -.02em; color: var(--art-color);
    margin: 2.2em 0 .7em;
    padding-bottom: .4em; border-bottom: 2px solid var(--nm-border);
}
.article-content h3 {
    font-family: var(--nm-sans);
    font-size: clamp(1.1rem, 2.5vw, 1.3rem); font-weight: 700;
    color: var(--art-color); margin: 1.8em 0 .6em;
}
.article-content h4 {
    font-family: var(--nm-sans); font-size: 1.05rem; font-weight: 600;
    color: #374151; margin: 1.4em 0 .5em;
    text-transform: uppercase; letter-spacing: .06em;
}

/* Link */
.article-content a {
    color: var(--art-accent); text-decoration: underline;
    text-decoration-thickness: 1px; text-underline-offset: 3px;
    transition: color .2s;
}
.article-content a:hover { color: #1d4ed8; }

/* Grassetto */
.article-content strong, .article-content b {
    font-weight: 600; color: #111827;
}

/* Blockquote */
.article-content blockquote {
    margin: 2em 0; padding: 1.2em 1.5em;
    border-left: 4px solid var(--art-accent);
    background: #f0f6ff; border-radius: 0 6px 6px 0;
    font-style: italic; font-size: 1.08em; color: #1e3a6e;
}
.article-content blockquote p { margin-bottom: 0; }

/* Liste */
.article-content ul, .article-content ol {
    padding-left: 1.5em; margin-bottom: 1.5em;
}
.article-content li { margin-bottom: .5em; line-height: 1.65; }

/* Immagini & iframe inline */
.article-content img {
    max-width: 100%; height: auto; border-radius: 4px;
    margin: 1.5em auto; display: block;
}
.article-content iframe {
    max-width: 100%; border-radius: 6px; margin: 1.5em 0;
}
.article-content small {
    font-family: var(--nm-sans); font-size: .8rem; color: var(--art-muted);
}

/* Share section */
.share-section {
    font-family: var(--nm-sans);
    border-top: 2px solid var(--nm-border) !important;
    border-bottom: 2px solid var(--nm-border) !important;
}

/* Nav prev/next */
.article-nav a {
    font-family: var(--nm-sans); font-size: .88rem;
    transition: background .2s, border-color .2s;
}
.article-nav a:hover {
    background: #f0f6ff;
    border-color: var(--art-accent) !important;
}

/* --- 12. FOOTER ----------------------------------------- */
.site-footer {
    background: var(--nm-primary);
    color: rgba(255,255,255,0.7);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}
.footer-brand {
    font-family: var(--nm-serif); font-size: 1.3rem; font-weight: 700;
    color: #fff; text-decoration: none;
    display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem;
}
.footer-brand img { height: 28px; }
.footer-col-title {
    font-family: var(--nm-sans); font-size: 0.68rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: rgba(255,255,255,0.5); margin-bottom: 1rem;
}
.footer-link {
    display: block; color: rgba(255,255,255,0.7);
    text-decoration: none; font-size: 0.88rem;
    padding: 0.25rem 0; transition: var(--nm-transition);
}
.footer-link:hover { color: #fff; }
.footer-bottom-bar {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem; margin-top: 3rem;
    display: flex; justify-content: space-between;
    align-items: center; font-size: 0.78rem;
}

/* --- 13. COOKIE BANNER & BACK-TO-TOP -------------------- */
.cookie-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    z-index: 10000; opacity: 0; visibility: hidden;
    transition: var(--nm-transition);
}
.cookie-overlay.show { opacity: 1; visibility: visible; }
.cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--nm-primary); color: #fff;
    padding: 1.25rem 0; z-index: 10001;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.cookie-banner.show { transform: translateY(0); }

#btn-top {
    position: fixed; bottom: 2rem; right: 2rem;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--nm-primary); color: #fff; border: none;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; cursor: pointer;
    opacity: 0; visibility: hidden; transform: translateY(15px);
    transition: var(--nm-transition); z-index: 900;
}
#btn-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
#btn-top:hover { background: var(--nm-accent); }

/* --- 14. REVEAL (scroll animation) --------------------- */
.reveal {
    opacity: 0; transform: translateY(25px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- 15. RESPONSIVE ------------------------------------- */
@media (max-width: 1024px) {
    .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .article-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .featured-list-item { flex-direction: column; }
    .fli-img { width: 100%; height: 200px; }
    .ace-img { height: 200px; }
    .footer-bottom-bar { flex-direction: column; gap: 0.75rem; text-align: center; }
    /* Articolo singolo */
    .single-article .article-title { font-size: 1.6rem; letter-spacing: -.02em; }
    .article-content { font-size: 1.05rem; line-height: 1.75; }
    .article-content > p:first-of-type::first-letter { font-size: 2.8em; }
    .article-content h2 { font-size: 1.2rem; }
    .article-content h3 { font-size: 1.05rem; }
}
@media (max-width: 480px) {
    .editorial-container { padding: 0 1rem; }
    .cat-chip { padding: 0.4rem 0.85rem; font-size: 0.76rem; }
    .ticker-bar { font-size: 0.65rem; }
}