:root{
    --bianco:#FFFFFF;
    --inchiostro:#1A1815;
    --vinaccia:#7A1F2B;
    --vinaccia-scuro:#5A1620;
    --grigio:#8C8680;
    --grigio-chiaro:#E7E4DF;
    --crema:#FBFAF8;

    --display: 'Fraunces', serif;
    --corpo: 'Source Serif 4', serif;
    --utility: 'Inter', sans-serif;
  }

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

  html{scroll-behavior:smooth;}

  #chi-sono, #libri, #citazioni, #contatti{
    scroll-margin-top:90px;
  }

  @media (max-width:640px){
    #chi-sono, #libri, #citazioni, #contatti{
      scroll-margin-top:76px;
    }
  }

  body{
    background:var(--bianco);
    color:var(--inchiostro);
    font-family:var(--corpo);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }

  a{color:inherit;text-decoration:none;}

  img{max-width:100%;display:block;}

  .container{
    max-width:1100px;
    margin:0 auto;
    padding:0 32px;
  }

  /* --- (rimosso: segnalibro verticale) --- */

  /* --- Header / Nav --- */
  header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:10;
    background:rgba(255,255,255,0.88);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--grigio-chiaro);
  }

  nav{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:20px 32px;
    max-width:1100px;
    margin:0 auto;
  }

  .logo{
    font-family:var(--display);
    font-size:1.15rem;
    letter-spacing:0.02em;
    font-weight:500;
  }

  .nav-links{
    display:flex;
    gap:36px;
    list-style:none;
    font-family:var(--utility);
    font-size:0.82rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
  }

  .nav-links a{
    position:relative;
    color:var(--inchiostro);
    opacity:0.75;
    transition:opacity 0.25s ease;
  }
  .nav-links a:hover{opacity:1;}

  .hamburger{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:32px;
    height:32px;
    background:none;
    border:none;
    cursor:pointer;
    padding:0;
    z-index:20;
  }

  .hamburger span{
    display:block;
    width:100%;
    height:2px;
    background:var(--inchiostro);
    transition:transform 0.25s ease, opacity 0.25s ease;
  }

  .hamburger.aperto span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }
  .hamburger.aperto span:nth-child(2){
    opacity:0;
  }
  .hamburger.aperto span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  @media (max-width:640px){
    .hamburger{display:flex;}

    .nav-links{
      position:fixed;
      top:0;
      right:0;
      height:100vh;
      width:min(280px,75vw);
      background:var(--crema);
      flex-direction:column;
      align-items:flex-start;
      justify-content:center;
      gap:32px;
      padding:0 40px;
      box-shadow:-12px 0 32px -18px rgba(26,24,21,0.35);
      transform:translateX(100%);
      transition:transform 0.3s ease;
      font-size:0.85rem;
    }

    .nav-links.aperto{
      transform:translateX(0);
    }
  }

  /* --- Hero --- */
  .hero{
    min-height:100vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    padding-top:80px;
    position:relative;
  }

  .hero .eyebrow{
    font-family:var(--utility);
    font-size:0.78rem;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--vinaccia);
    margin-bottom:24px;
  }

  .hero h1{
    font-family:var(--display);
    font-weight:300;
    font-size:clamp(3rem,8vw,6.2rem);
    line-height:0.98;
    letter-spacing:-0.01em;
    max-width:900px;
  }

  .hero h1 em{
    font-style:italic;
    font-weight:400;
    color:var(--vinaccia);
  }

  .hero p.sottotitolo{
    font-family:var(--corpo);
    font-size:1.2rem;
    color:var(--grigio);
    max-width:520px;
    margin-top:32px;
  }

  .hero .scroll-hint{
    margin-top:80px;
    font-family:var(--utility);
    font-size:0.75rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--grigio);
    display:flex;
    align-items:center;
    gap:10px;
  }

  .scroll-hint .linea{
    width:40px;height:1px;
    background:var(--grigio);
  }

  /* --- Sezione intro/bio --- */
  .bio{
    padding-top:140px;
    padding-bottom:140px;
    border-top:1px solid var(--grigio-chiaro);
  }

  .bio .griglia{
    display:grid;
    grid-template-columns:0.9fr 1.4fr;
    gap:64px;
    align-items:start;
  }

  @media (max-width:760px){
    .bio .griglia{grid-template-columns:1fr;gap:36px;}
  }

  .bio .etichetta{
    font-family:var(--utility);
    font-size:0.78rem;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--grigio);
  }

  .bio-foto{
    margin-top:28px;
    aspect-ratio:1/1;
    width:100%;
    max-width:340px;
    border-radius:2px;
    overflow:hidden;
    box-shadow:0 24px 48px -18px rgba(26,24,21,0.35);
  }

  .bio-foto img{
    width:100%;
    height:100%;
    object-fit:cover;
    filter:grayscale(15%);
  }

  .bio blockquote{
    font-family:var(--display);
    font-style:italic;
    font-weight:400;
    font-size:1.7rem;
    line-height:1.4;
    color:var(--inchiostro);
    margin-bottom:28px;
  }

  .bio .testo p{
    font-size:1.08rem;
    color:#403C38;
    margin-bottom:20px;
    max-width:60ch;
  }

  /* --- Sezione Libri --- */
  .libri{
    padding:140px 0;
    background:var(--crema);
    border-top:1px solid var(--grigio-chiaro);
    border-bottom:1px solid var(--grigio-chiaro);
  }

  .libri > .container > .intestazione{
    margin-bottom:90px;
    max-width:600px;
  }

  .intestazione .etichetta{
    font-family:var(--utility);
    font-size:0.78rem;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--vinaccia);
    margin-bottom:18px;
  }

  .intestazione h2{
    font-family:var(--display);
    font-weight:300;
    font-size:clamp(2.2rem,4vw,3rem);
  }

  .libro{
    display:grid;
    grid-template-columns:280px 1fr;
    gap:64px;
    align-items:center;
    padding:64px 0;
  }

  .libro:not(:last-child){
    border-bottom:1px solid var(--grigio-chiaro);
  }

  .libro:nth-child(even).griglia-libri-item{
    direction:rtl;
  }

  /* alterna il lato della copertina */
  .libro.inverso{
    grid-template-columns:1fr 280px;
  }
  .libro.inverso .copertina{order:2;}
  .libro.inverso .dettagli{order:1;}

  @media (max-width:760px){
    .libro, .libro.inverso{
      grid-template-columns:1fr;
      gap:36px;
    }
    .libro.inverso .copertina{order:0;}
    .libro.inverso .dettagli{order:1;}
  }

  .copertina{
    aspect-ratio:2/3;
    width:100%;
    max-width:280px;
    border-radius:2px;
    position:relative;
    box-shadow:0 24px 48px -18px rgba(26,24,21,0.35);
    overflow:hidden;
  }

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

.link-vinaccia {
    color: var(--vinaccia);
    text-decoration: underline;
    font-size: 20px; /* aumenta la dimensione */
}

  .copertina::before{
    content:'';
    position:absolute;
    left:0;top:0;bottom:0;
    width:14px;
    background:rgba(0,0,0,0.18);
    z-index:2;
  }

  .dettagli .numero{
    font-family:var(--utility);
    font-size:0.78rem;
    color:var(--grigio);
    letter-spacing:0.1em;
    margin-bottom:14px;
  }

  .dettagli h3{
    font-family:var(--display);
    font-weight:400;
    font-size:2rem;
    margin-bottom:8px;
  }

  .dettagli .genere{
    font-family:var(--utility);
    font-size:0.78rem;
    text-transform:uppercase;
    letter-spacing:0.08em;
    color:var(--vinaccia);
    margin-bottom:20px;
  }

  .dettagli p.trama{
    color:#403C38;
    font-size:1rem;
    max-width:55ch;
    margin-bottom:28px;
  }

  .acquista{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
  }

  .btn{
    font-family:var(--utility);
    font-size:0.82rem;
    letter-spacing:0.04em;
    padding:13px 26px;
    border-radius:2px;
    border:1px solid var(--inchiostro);
    transition:all 0.25s ease;
    display:inline-flex;
    align-items:center;
    gap:8px;
  }

  .btn.pieno{
    background:var(--inchiostro);
    color:var(--bianco);
  }
  .btn.pieno:hover{
    background:var(--vinaccia);
    border-color:var(--vinaccia);
  }

  .btn.vuoto:hover{
    background:var(--inchiostro);
    color:var(--bianco);
  }

  .btn .formato{
    opacity:0.6;
    font-size:0.72rem;
  }

  /* --- Contatti / Footer --- */
  .contatti{
    padding-top:140px;
    padding-bottom:80px;
    text-align:center;
  }

  .contatti .etichetta{
    font-family:var(--utility);
    font-size:0.78rem;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--grigio);
    margin-bottom:20px;
  }

  .contatti h2{
    font-family:var(--display);
    font-weight:300;
    font-style:italic;
    font-size:clamp(2rem,5vw,3.2rem);
    max-width:700px;
    margin:0 auto 40px;
  }

  .contatti .email{
    font-family:var(--corpo);
    font-size:1.3rem;
    border-bottom:1px solid var(--inchiostro);
    padding-bottom:4px;
  }

  .social{
    margin-top:50px;
    display:flex;
    gap:28px;
    justify-content:center;
    font-family:var(--utility);
    font-size:0.8rem;
    text-transform:uppercase;
    letter-spacing:0.06em;
    color:var(--grigio);
  }
  .social a:hover{color:var(--vinaccia);}

  footer{
    padding:32px;
    text-align:center;
    font-family:var(--utility);
    font-size:0.72rem;
    color:var(--grigio);
    border-top:1px solid var(--grigio-chiaro);
  }

  /* reveal on scroll */
  .reveal{
    opacity:0;
    transform:translateY(24px);
    transition:opacity 0.8s ease, transform 0.8s ease;
  }
  .reveal.visibile{
    opacity:1;
    transform:translateY(0);
  }

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
  }

  a:focus-visible, .btn:focus-visible{
    outline:2px solid var(--vinaccia);
    outline-offset:3px;
  }