/* ============================================================
   Salvatore Viola — Demo
   Design system "Indaco notturno"
   Editoriale, minimale. Vanilla CSS, zero dipendenze runtime.
   ============================================================ */

/* ---------- Reset essenziale ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, picture, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }

/* ---------- Variabili ---------- */
:root {
  /* Palette indaco notturno */
  --paper:      #F4F5F8;   /* fondo pagina, freddo */
  --surface:    #FFFFFF;
  --surface-2:  #EDEFF4;
  --ink:        #171A24;   /* testo principale, notte */
  --ink-soft:   #33384A;
  --muted:      #595E70;   /* testo secondario */
  --muted-2:    #8A90A2;   /* testo tenue */
  --line:       #E2E5EC;   /* hairline */
  --line-strong:#CDD2DE;

  --indigo:      #3B45A3;  /* accento */
  --indigo-600:  #2E367F;  /* hover / testo accento scuro */
  --indigo-050:  #ECEEF9;  /* fondo tenue accento */
  --indigo-100:  #DDE0F4;

  --night:      #14162B;   /* fondo immersivo profondo */
  --night-2:    #1B1E3A;
  --night-line: #2C3054;
  --on-night:        #EEF0FA;
  --on-night-muted:  #A7ADCE;
  --on-night-accent: #9AA2E8; /* periwinkle */

  /* Tipografia */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --container: 1200px;
  --container-narrow: 760px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 12px;
  --radius-sm: 8px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.5s;
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.0625rem);
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  font-weight: 400;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 460;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--ink);
  font-optical-sizing: auto;
}

p { max-width: 68ch; }

::selection { background: var(--indigo); color: #fff; }

/* ---------- Utility ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.narrow { max-width: var(--container-narrow); }
.section { padding-block: clamp(3.5rem, 3rem + 5vw, 7rem); }
.section--tight { padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.center { text-align: center; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 200;
  background: var(--ink); color: #fff; padding: 0.6rem 1rem; border-radius: var(--radius-sm);
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--indigo-600);
}
.eyebrow--night { color: var(--on-night-accent); }

.section-head { max-width: 62ch; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3rem); }
.section-head .eyebrow { display: block; margin-bottom: 0.9rem; }
.section-title { font-size: clamp(1.9rem, 1.4rem + 2.2vw, 2.9rem); }
.section-head p { color: var(--muted); margin-top: 1rem; font-size: 1.05rem; }

.lead { font-size: clamp(1.1rem, 1rem + 0.6vw, 1.35rem); line-height: 1.6; color: var(--ink-soft); }

/* focus visibile globale */
:focus-visible { outline: 2.5px solid var(--indigo); outline-offset: 3px; border-radius: 3px; }
.on-night :focus-visible { outline-color: var(--on-night-accent); }

/* ---------- Bottoni ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem; white-space: nowrap;
  font-family: var(--font-sans); font-size: 0.95rem; font-weight: 500; letter-spacing: 0.01em;
  padding: 0.85rem 1.5rem; border-radius: 100px; border: 1.5px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  will-change: transform;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn--primary { background: var(--indigo); color: #fff; box-shadow: 0 6px 20px -8px rgba(59,69,163,0.55); }
.btn--primary:hover { background: var(--indigo-600); box-shadow: 0 10px 26px -8px rgba(59,69,163,0.65); }

.btn--ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); background: var(--ink); color: #fff; }

.btn--dark { background: var(--ink); color: #fff; box-shadow: 0 6px 20px -10px rgba(23,26,36,0.5); }
.btn--dark:hover { background: #000; box-shadow: 0 10px 26px -10px rgba(23,26,36,0.6); }

.btn--on-night { background: var(--on-night); color: var(--night); }
.btn--on-night:hover { background: #fff; }
.btn--ghost-night { border-color: var(--night-line); color: var(--on-night); }
.btn--ghost-night:hover { border-color: var(--on-night); background: rgba(255,255,255,0.06); }

.btn--block { width: 100%; justify-content: center; }
.btn--sm { padding: 0.6rem 1.1rem; font-size: 0.875rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 500; color: var(--indigo-600);
  border-bottom: 1.5px solid transparent; transition: border-color 0.25s, gap 0.25s;
  width: fit-content;
}
.link-arrow .arrow { transition: transform 0.3s var(--ease); }
.link-arrow:hover { border-color: var(--indigo-600); }
.link-arrow:hover .arrow { transform: translateX(4px); }
.on-night .link-arrow, .link-arrow--night { color: var(--on-night-accent); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244,245,248,0.82);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 1px 0 rgba(23,26,36,0.02); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; transition: height 0.3s var(--ease); }
.is-scrolled .nav { height: 64px; }

.brand { display: inline-flex; align-items: baseline; gap: 0.15rem; font-family: var(--font-display); font-size: 1.3rem; font-weight: 500; letter-spacing: -0.01em; color: var(--ink); }
.brand .brand-dot { color: var(--indigo); }
.brand small { font-family: var(--font-sans); font-size: 0.62rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); margin-left: 0.5rem; align-self: center; }

.nav-links { display: flex; align-items: center; gap: 2.2rem; flex-shrink: 0; }
.nav-links a { flex-shrink: 0; }
.nav-links a:not(.nav-cta) { font-size: 0.95rem; font-weight: 450; color: var(--ink-soft); position: relative; padding: 0.3rem 0; transition: color 0.2s; }
.nav-links a:not(.nav-cta)::after { content:""; position: absolute; left: 0; bottom: -2px; width: 0; height: 1.5px; background: var(--indigo); transition: width 0.28s var(--ease); }
.nav-links a:not(.nav-cta):hover { color: var(--ink); }
.nav-links a:not(.nav-cta):hover::after, .nav-links a:not(.nav-cta)[aria-current="page"]::after { width: 100%; }
.nav-links a:not(.nav-cta)[aria-current="page"] { color: var(--ink); }
.nav-cta { margin-left: 0.5rem; }

.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 10px; background: transparent; align-items: center; justify-content: center; color: var(--ink); }
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }

/* Menu mobile overlay */
.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--night);
  color: var(--on-night);
  padding: 6rem var(--gutter) 2rem;
  display: flex; flex-direction: column;
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 0.5s var(--ease), visibility 0.5s;
}
.mobile-menu.is-open { transform: translateY(0); visibility: visible; }
.mobile-menu a { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 3rem); font-weight: 460; padding: 0.5rem 0; border-bottom: 1px solid var(--night-line); color: var(--on-night); opacity: 0; transform: translateY(14px); }
.mobile-menu.is-open a { animation: mm-in 0.5s var(--ease) forwards; }
.mobile-menu.is-open a:nth-child(1){animation-delay:.08s}
.mobile-menu.is-open a:nth-child(2){animation-delay:.14s}
.mobile-menu.is-open a:nth-child(3){animation-delay:.20s}
.mobile-menu.is-open a:nth-child(4){animation-delay:.26s}
.mobile-menu.is-open a:nth-child(5){animation-delay:.32s}
.mobile-menu .mm-foot { margin-top: auto; display: flex; gap: 1.2rem; padding-top: 2rem; opacity: 0; animation: mm-in 0.5s var(--ease) 0.4s forwards; }
.mobile-menu .mm-foot a { font-family: var(--font-sans); font-size: 0.9rem; border: 0; padding: 0; color: var(--on-night-muted); }
@keyframes mm-in { to { opacity: 1; transform: translateY(0); } }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--night);
  color: var(--on-night);
}
.hero::before { /* alone cosmico sottile */
  content:""; position: absolute; top: -20%; right: -10%; width: 55vw; height: 55vw; max-width: 720px; max-height: 720px;
  background: radial-gradient(circle at center, rgba(90,102,220,0.28), rgba(20,22,43,0) 62%);
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-block: clamp(3.5rem, 3rem + 6vw, 7.5rem); }
.hero-copy .eyebrow { display:block; margin-bottom: 1.4rem; }
.hero h1 { color: var(--on-night); font-size: clamp(2.7rem, 1.9rem + 4.4vw, 5rem); font-weight: 440; letter-spacing: -0.025em; }
.hero h1 em { font-style: italic; color: var(--on-night-accent); }
.hero-lead { color: var(--on-night-muted); font-size: clamp(1.08rem, 1rem + 0.5vw, 1.3rem); line-height: 1.6; margin-top: 1.6rem; max-width: 46ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.4rem; }
.hero-figure { position: relative; justify-self: center; }
.hero-figure img { width: min(340px, 74vw); border-radius: 6px; box-shadow: 0 40px 80px -30px rgba(0,0,0,0.7), 0 8px 24px -12px rgba(0,0,0,0.6); transform: rotate(-2deg); }
.hero-figure .hero-badge {
  position: absolute; bottom: -14px; left: -14px; background: var(--on-night); color: var(--night);
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.5rem 0.9rem; border-radius: 100px;
}

/* ---------- Sezione: ultima pubblicazione (featured) ---------- */
.featured { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.featured-cover { justify-self: center; }
.featured-cover img { width: min(360px, 80vw); border-radius: 6px; box-shadow: 0 30px 60px -28px rgba(23,26,36,0.5); }
.featured-body .eyebrow { display:block; margin-bottom: 1rem; }
.featured-body h2 { font-size: clamp(2rem, 1.5rem + 2.5vw, 3.2rem); }
.featured-excerpt { font-family: var(--font-display); font-style: italic; font-size: 1.3rem; line-height: 1.5; color: var(--ink-soft); margin: 1.4rem 0; }
.featured-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; color: var(--muted); font-size: 0.9rem; margin-bottom: 1.8rem; }
.featured-meta span strong { color: var(--ink-soft); font-weight: 600; }
.featured-actions { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; align-items: center; }
.featured-buy { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.5rem; }

/* ---------- Griglia libri / card ---------- */
.books-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: clamp(1.5rem, 1rem + 2vw, 2.6rem); }
.books-grid--buy { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.book-card { display: flex; flex-direction: column; }
.book-cover {
  position: relative; border-radius: 6px; overflow: hidden; background: var(--surface-2);
  box-shadow: 0 18px 34px -22px rgba(23,26,36,0.55);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
  aspect-ratio: 3/4;
}
.book-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.book-card:hover .book-cover { transform: translateY(-6px); box-shadow: 0 30px 50px -24px rgba(23,26,36,0.6); }
.book-card:hover .book-cover img { transform: scale(1.04); }
.book-cover .cover-cta {
  position: absolute; inset: auto 0 0 0; padding: 2.5rem 1rem 1rem; color: #fff;
  background: linear-gradient(to top, rgba(20,22,43,0.85), rgba(20,22,43,0));
  font-size: 0.85rem; font-weight: 500; opacity: 0; transform: translateY(8px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease); display: flex; align-items: center; gap: 0.4rem;
}
.book-card:hover .cover-cta { opacity: 1; transform: translateY(0); }
.card-flag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--indigo); color: #fff; font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; padding: 0.35rem 0.7rem; border-radius: 100px;
  box-shadow: 0 6px 16px -6px rgba(23,26,36,0.5);
}
/* Card con pulsanti: altezza piena e pulsanti ancorati in fondo → allineati sulla riga */
.book-card--buy { height: 100%; }
.book-card--buy .book-info { flex: 1 1 auto; display: flex; flex-direction: column; }
.book-card--buy .book-buy { display: flex; flex-direction: column; gap: 0.5rem; margin-top: auto; padding-top: 0.9rem; }
.book-info { padding-top: 1rem; }
.book-info .book-series { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--indigo-600); }
.book-info h3 { font-size: 1.2rem; margin-top: 0.3rem; }
.book-info .book-genre { color: var(--muted); font-size: 0.88rem; margin-top: 0.35rem; }

/* ---------- Trilogia (percorso) ---------- */
.trilogy { background: var(--surface); border-radius: var(--radius); border: 1px solid var(--line); padding: clamp(1.5rem, 1rem + 2vw, 3rem); }
.trilogy-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; }
.trilogy-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.2rem, 1rem + 1.5vw, 2.2rem); }
.trilogy-step { display: flex; gap: 1rem; align-items: flex-start; }
.trilogy-step .step-num { font-family: var(--font-display); font-size: 1.4rem; color: var(--indigo); line-height: 1; padding-top: 0.1rem; }
.trilogy-step img { width: 74px; border-radius: 4px; box-shadow: 0 10px 20px -12px rgba(23,26,36,0.5); flex-shrink: 0; }
.trilogy-step h4 { font-size: 1.02rem; }
.trilogy-step p { font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; }

/* ---------- Saga trilogia (Volume 1 → 2 → 3) ---------- */
.saga { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: clamp(1.75rem, 1rem + 3vw, 3.5rem); }
.saga-head { text-align: center; max-width: 60ch; margin: 0 auto clamp(2rem, 1.5rem + 2vw, 3rem); }
.saga-head .eyebrow { display: block; margin-bottom: 0.9rem; }
.saga-head h2 { font-size: clamp(1.8rem, 1.4rem + 2vw, 2.7rem); }
.saga-head p { color: var(--muted); margin: 1rem auto 0; font-size: 1.05rem; }
.saga-track { list-style: none; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: start; gap: clamp(0.4rem, 1.2vw, 1.4rem); padding: 0; margin: 0; }
.saga-vol > a { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.8rem; padding: 1.2rem 1rem; border-radius: 12px; transition: background 0.3s var(--ease), transform 0.3s var(--ease); }
.saga-vol > a:hover { background: var(--indigo-050); transform: translateY(-5px); }
.saga-vol img { width: min(170px, 42vw); border-radius: 5px; box-shadow: 0 20px 38px -20px rgba(23,26,36,0.55); transition: box-shadow 0.3s var(--ease); }
.saga-vol > a:hover img { box-shadow: 0 28px 48px -22px rgba(23,26,36,0.6); }
.saga-badge { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--indigo-600); background: var(--indigo-050); padding: 0.35rem 0.85rem; border-radius: 100px; }
.saga-vol h3 { font-size: 1.1rem; }
.saga-vol p { font-size: 0.85rem; color: var(--muted); max-width: 26ch; }
.saga-arrow { display: flex; align-items: center; justify-content: center; align-self: center; color: var(--indigo); }
.saga-arrow svg { width: 30px; height: 30px; }
@media (max-width: 760px) {
  .saga-track { grid-template-columns: 1fr; gap: 0.2rem; }
  .saga-arrow { padding: 0.4rem 0; }
  .saga-arrow svg { transform: rotate(90deg); }
}

/* ---------- Citazioni (night) ---------- */
.on-night { background: var(--night); color: var(--on-night); position: relative; overflow: hidden; }
.on-night h2, .on-night h3 { color: var(--on-night); }
.quotes .quote-mark { font-family: var(--font-display); font-size: 5rem; line-height: 0.7; color: var(--on-night-accent); opacity: 0.5; }
.quotes-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: clamp(2rem, 1.5rem + 2vw, 3.5rem); margin-top: 1.5rem; }
.quote blockquote { font-family: var(--font-display); font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.6rem); line-height: 1.45; font-style: italic; color: var(--on-night); }
.quote cite { display: block; margin-top: 1rem; font-family: var(--font-sans); font-style: normal; font-size: 0.85rem; color: var(--on-night-muted); letter-spacing: 0.02em; }
.quote cite b { color: var(--on-night); font-weight: 600; }

/* ---------- Recensioni ---------- */
.reviews-note {
  display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.78rem; font-weight: 500;
  color: var(--indigo-600); background: var(--indigo-050); padding: 0.4rem 0.8rem; border-radius: 100px; margin-bottom: 1.5rem;
}
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.review-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease); }
.review-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -26px rgba(23,26,36,0.4); }
.review-stars { color: var(--indigo); letter-spacing: 0.15em; font-size: 0.9rem; }
.review-card p { font-size: 1.02rem; line-height: 1.6; color: var(--ink-soft); margin: 0.9rem 0 1.2rem; }
.review-card .review-author { display: flex; align-items: center; gap: 0.75rem; }
.review-card .review-avatar { width: 46px; height: 46px; border-radius: 50%; overflow: hidden; flex-shrink: 0; background: var(--indigo-050); }
.review-card .review-avatar svg, .review-card .review-avatar img { width: 100%; height: 100%; display: block; object-fit: cover; }
.review-card .review-author b { font-size: 0.92rem; font-weight: 600; }
.review-card .review-author span { font-size: 0.8rem; color: var(--muted); display: block; }

/* ---------- Autore preview ---------- */
.author-pre { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.author-portrait { position: relative; justify-self: center; }
.author-portrait img { width: min(240px, 60vw); aspect-ratio: 1; object-fit: cover; border-radius: 50%; box-shadow: 0 30px 60px -30px rgba(23,26,36,0.5); background: var(--surface-2); }
.author-portrait::after { content:""; position: absolute; inset: -10px; border: 1px solid var(--line-strong); border-radius: 50%; }
.author-pre-body .eyebrow { display:block; margin-bottom: 1rem; }
.author-pre-body h2 { font-size: clamp(1.9rem, 1.4rem + 2.2vw, 2.9rem); }
.author-pre-body p { color: var(--ink-soft); margin: 1.2rem 0; font-size: 1.08rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--night); color: var(--on-night-muted); padding-block: clamp(3rem, 2.5rem + 3vw, 5rem) 2rem; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; padding-bottom: 3rem; border-bottom: 1px solid var(--night-line); }
.footer-brand .brand { color: var(--on-night); }
.footer-brand .brand small { color: var(--on-night-muted); }
.footer-brand p { margin-top: 1rem; font-size: 0.95rem; max-width: 40ch; line-height: 1.6; }
.footer-col h4 { font-family: var(--font-sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--on-night-muted); margin-bottom: 1.1rem; }
.footer-col a { display: block; padding: 0.35rem 0; color: var(--on-night); font-size: 0.95rem; opacity: 0.85; transition: opacity 0.2s, padding-left 0.2s; }
.footer-col a:hover { opacity: 1; padding-left: 4px; }
.footer-social { display: flex; gap: 0.75rem; margin-top: 0.3rem; }
.footer-social a { width: 42px; height: 42px; border: 1px solid var(--night-line); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--on-night); transition: background 0.25s, border-color 0.25s, transform 0.25s; }
.footer-social a:hover { background: var(--indigo); border-color: var(--indigo); transform: translateY(-3px); }
.footer-social svg { width: 20px; height: 20px; }
.footer-legal { padding-top: 1.8rem; font-size: 0.8rem; line-height: 1.6; color: var(--on-night-muted); max-width: 78ch; opacity: 0.85; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-top: 1rem; font-size: 0.85rem; }
.footer-bottom a:hover { color: var(--on-night); }

/* ---------- Page hero (pagine interne) ---------- */
.page-hero { padding-top: clamp(3rem, 2.5rem + 4vw, 6rem); padding-bottom: clamp(1.5rem,1rem+2vw,3rem); }
.breadcrumb { display: flex; gap: 0.5rem; font-size: 0.82rem; color: var(--muted); margin-bottom: 1.5rem; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--indigo-600); }
.breadcrumb span { color: var(--line-strong); }
.page-hero h1 { font-size: clamp(2.4rem, 1.8rem + 3vw, 4rem); }
.page-hero .lead { margin-top: 1.2rem; }

/* ---------- Pagina Libro ---------- */
.book-detail { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.book-detail-cover { position: sticky; top: 100px; justify-self: center; }
.book-detail-cover img { width: min(380px, 82vw); border-radius: 6px; box-shadow: 0 40px 70px -30px rgba(23,26,36,0.55); }
.book-detail-cover .cover-note { text-align: center; font-size: 0.8rem; color: var(--muted); margin-top: 1rem; }
.book-detail-body .book-series { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--indigo-600); display:block; margin-bottom: 0.8rem; }
.book-detail-body h1 { font-size: clamp(2.2rem, 1.6rem + 3vw, 3.6rem); }
.book-detail-body .subtitle { color: var(--muted); font-size: 1.1rem; margin-top: 0.5rem; font-family: var(--font-display); font-style: italic; }
.book-incipit { font-family: var(--font-display); font-style: italic; font-size: clamp(1.2rem, 1.1rem + 0.6vw, 1.5rem); line-height: 1.5; color: var(--ink-soft); border-left: 2px solid var(--indigo); padding-left: 1.4rem; margin: 2rem 0; }
.book-synopsis { margin: 1.5rem 0; }
.book-synopsis p + p { margin-top: 1rem; }

.book-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 2rem 0; }
.book-specs div { background: var(--surface); padding: 1rem 1.2rem; }
.book-specs dt { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.book-specs dd { font-size: 0.98rem; margin-top: 0.2rem; color: var(--ink); }

.buy-block { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; margin: 2rem 0; }
.buy-block h3 { font-family: var(--font-sans); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.buy-primary { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-bottom: 1rem; }
.store-list { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.store-chip { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.85rem; font-weight: 500; color: var(--ink-soft); border: 1px solid var(--line-strong); border-radius: 100px; padding: 0.45rem 0.9rem; transition: border-color 0.2s, color 0.2s, background 0.2s; }
.store-chip:hover { border-color: var(--indigo); color: var(--indigo-600); background: var(--indigo-050); }
.store-chip .fmt { font-size: 0.72rem; color: var(--muted); }

.share-row { display: flex; align-items: center; gap: 0.75rem; margin: 1.5rem 0; flex-wrap: wrap; }
.share-row span { font-size: 0.85rem; color: var(--muted); }
.share-btn { width: 40px; height: 40px; border: 1px solid var(--line-strong); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-soft); transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s; }
.share-btn:hover { background: var(--indigo); color: #fff; border-color: var(--indigo); transform: translateY(-2px); }
.share-btn svg { width: 18px; height: 18px; }

/* ---------- Pagina Autore ---------- */
.author-hero { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(2rem,5vw,4rem); align-items: center; }
.author-hero .author-portrait img { width: min(300px, 68vw); }
.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.3rem; font-size: 1.08rem; line-height: 1.8; color: var(--ink-soft); }
.prose p:first-of-type::first-letter { font-family: var(--font-display); font-size: 3.6rem; float: left; line-height: 0.8; padding: 0.3rem 0.6rem 0 0; color: var(--indigo); font-weight: 500; }
.pubblicazioni-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pub-row { background: var(--surface); display: flex; align-items: center; gap: 1.2rem; padding: 1rem 1.3rem; transition: background 0.2s; }
.pub-row:hover { background: var(--indigo-050); }
.pub-row img { width: 44px; border-radius: 3px; box-shadow: 0 6px 12px -8px rgba(0,0,0,0.5); }
.pub-row .pub-title { font-family: var(--font-display); font-size: 1.1rem; }
.pub-row .pub-year { margin-left: auto; color: var(--muted); font-size: 0.9rem; }

/* ---------- Pagina Contatti ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.form-field { margin-bottom: 1.3rem; }
.form-field label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink-soft); margin-bottom: 0.5rem; }
.form-field input, .form-field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  padding: 0.85rem 1rem; transition: border-color 0.2s, box-shadow 0.2s;
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-050); }
.form-field textarea { resize: vertical; min-height: 150px; }
.form-antispam { display: flex; align-items: center; gap: 0.75rem; }
.form-antispam label { margin: 0; }
.form-antispam input { width: 90px; }
.contact-aside { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem; }
.contact-aside h3 { font-size: 1.3rem; }
.contact-aside p { font-size: 0.98rem; color: var(--muted); margin: 0.8rem 0 1.5rem; }
.contact-social { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-social a { display: flex; align-items: center; gap: 0.8rem; padding: 0.8rem 1rem; border: 1px solid var(--line); border-radius: var(--radius-sm); font-weight: 500; transition: border-color 0.2s, background 0.2s; }
.contact-social a:hover { border-color: var(--indigo); background: var(--indigo-050); }
.contact-social svg { width: 22px; height: 22px; color: var(--indigo); }
.form-note { font-size: 0.82rem; color: var(--muted); margin-top: 0.5rem; }

/* ---------- Style guide ---------- */
.sg-section { padding-block: 2.5rem; border-top: 1px solid var(--line); }
.sg-swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; }
.sg-swatch { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.sg-swatch .chip { height: 90px; }
.sg-swatch .meta { padding: 0.7rem 0.9rem; font-size: 0.8rem; }
.sg-swatch .meta b { display: block; font-size: 0.85rem; }
.sg-swatch .meta code { color: var(--muted); font-size: 0.78rem; }
.sg-type-row { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.sg-type-row small { color: var(--muted); font-size: 0.78rem; font-family: var(--font-sans); }
.sg-components { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* ---------- Animazioni reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-figure { grid-row: 1; margin-bottom: 1rem; }
  .featured, .author-pre, .author-hero, .book-detail, .contact-grid { grid-template-columns: 1fr; }
  .book-detail-cover { position: static; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .trilogy-steps { grid-template-columns: 1fr; }
  .book-specs { grid-template-columns: 1fr; }
  .buy-primary { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .hero h1 { letter-spacing: -0.02em; }
}
@media (max-width: 420px) {
  .books-grid { grid-template-columns: 1fr 1fr; gap: 1.1rem; }
  .book-info h3 { font-size: 1rem; }
}

/* Menu mobile aperto: blocca lo scroll del body */
body.menu-open { overflow: hidden; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   Banner cookie — conforme Linee guida Garante 10/06/2021
   (X di chiusura con pari evidenza, Accetta/Rifiuta identici,
   preferenze granulari preimpostate sul diniego). Grafica
   "Indaco notturno" del sito.
   ============================================================ */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  background: var(--surface); border-top: 3px solid var(--indigo);
  box-shadow: 0 -12px 40px -12px rgba(20,22,43,0.35);
  padding-top: clamp(2.4rem, 1.9rem + 1.8vw, 3.1rem);
  padding-bottom: clamp(1.5rem, 1.2rem + 1vw, 1.9rem);
  padding-left: 0;
  padding-right: 0;
  font-family: var(--font-sans);
  /* Se il contenuto (pannello preferenze) supera lo schermo, il banner
     non esce dai bordi ma scorre al suo interno (fix mobile). */
  max-height: 100vh;
  max-height: 100dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  display: none;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner .ck-inner { max-width: var(--container-narrow); margin: 0 auto; padding-inline: var(--gutter); position: relative; }
.cookie-banner h2 { font-family: var(--font-display); font-size: 1.15rem; color: var(--ink); margin-bottom: 0.4rem; padding-right: 3rem; }
.cookie-banner p { font-size: 0.9rem; color: var(--muted); line-height: 1.6; }
.cookie-banner a { color: var(--indigo-600); text-decoration: underline; text-underline-offset: 2px; }
/* X di chiusura: pari evidenza grafica → chiuderla = solo cookie tecnici */
.ck-close {
  position: absolute; top: 0; right: var(--gutter);
  width: 2.2rem; height: 2.2rem; border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--ink); border: 1px solid var(--line-strong);
  font-size: 1rem; font-weight: 700; line-height: 1; cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.ck-close:hover { background: var(--line); border-color: var(--muted-2); }
.ck-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.1rem; }
/* Pari evidenza: "Accetta tutti" e "Rifiuta" identici per rilievo e dimensione */
.ck-btn {
  font: inherit; font-weight: 600; font-size: 0.9rem;
  padding: 0.7rem 1.4rem; border-radius: var(--radius-sm); cursor: pointer;
  border: 1px solid var(--indigo); min-width: 11rem; flex: 1 1 auto;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}
.ck-btn:active { transform: translateY(1px); }
.ck-solid { background: var(--indigo); color: #fff; }
.ck-solid:hover { background: var(--indigo-600); }
.ck-outline { background: var(--surface); color: var(--indigo-600); }
.ck-outline:hover { background: var(--indigo-050); }
.ck-prefs-panel { display: none; margin-top: 1.1rem; border-top: 1px solid var(--line); padding-top: 0.6rem; }
.ck-prefs-panel.is-visible { display: block; }
.ck-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 0.65rem 0; border-bottom: 1px dashed var(--line); }
.ck-row strong { font-size: 0.9rem; color: var(--ink); }
.ck-row small { display: block; color: var(--muted); font-size: 0.8rem; line-height: 1.5; margin-top: 0.15rem; }
.ck-row input[type="checkbox"] { width: 1.2rem; height: 1.2rem; accent-color: var(--indigo); flex-shrink: 0; }
.ck-note { margin-top: 0.8rem; font-size: 0.78rem; color: var(--muted-2); }
@media (max-width: 600px) {
  .ck-btn { flex: 1 1 100%; min-width: 0; }
}

/* ---------- Pagina legale (privacy / cookie policy) ---------- */
.legal { padding-top: clamp(1rem, 0.5rem + 1vw, 2rem); padding-bottom: clamp(3rem, 2.5rem + 3vw, 5rem); }
.legal .container { max-width: var(--container-narrow); }
.legal .updated { color: var(--muted); font-size: 0.88rem; margin-bottom: 2.2rem; }
.legal h2 { font-family: var(--font-display); font-size: 1.35rem; margin: 2.2rem 0 0.6rem; }
.legal h3 { font-size: 1.02rem; margin: 1.4rem 0 0.4rem; }
.legal p, .legal li { color: var(--ink-soft); line-height: 1.75; }
.legal ul { padding-left: 1.3rem; margin: 0.5rem 0 1.1rem; }
.legal li { margin-bottom: 0.35rem; }
.legal a { color: var(--indigo-600); text-decoration: underline; text-underline-offset: 2px; }
.legal-table { border-collapse: collapse; width: 100%; margin: 1rem 0 1.4rem; font-size: 0.9rem; }
.legal-table th, .legal-table td { border: 1px solid var(--line); padding: 0.55rem 0.7rem; text-align: left; }
.legal-table th { background: var(--surface-2); font-weight: 600; }
.legal-callout { background: var(--indigo-050); border: 1px solid var(--indigo-100); border-radius: var(--radius-sm); padding: 0.9rem 1.1rem; font-size: 0.9rem; margin: 1.4rem 0; }

/* Spunta privacy nel form contatti */
.form-consent { display: flex; align-items: flex-start; gap: 0.6rem; margin: 0.2rem 0 0.4rem; font-size: 0.9rem; color: var(--muted); }
.form-consent input[type="checkbox"] { width: 1.15rem; height: 1.15rem; margin-top: 0.15rem; accent-color: var(--indigo); flex-shrink: 0; }
.form-consent a { color: var(--indigo-600); text-decoration: underline; text-underline-offset: 2px; }

/* Conferma invio + avvisi del modulo contatti */
.form-success { background: var(--indigo-050); border: 1px solid var(--indigo-100); border-radius: var(--radius); padding: clamp(1.8rem, 1.4rem + 2vw, 3rem); text-align: center; }
.form-success-icon { display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px; border-radius: 50%; background: var(--indigo); color: #fff; margin-bottom: 1.1rem; }
.form-success-icon svg { width: 30px; height: 30px; }
.form-success h2 { font-family: var(--font-display); font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); margin-bottom: 0.5rem; }
.form-success p { color: var(--muted); margin-bottom: 1.6rem; }
.form-alert { padding: 0.85rem 1.1rem; border-radius: var(--radius-sm); margin-bottom: 1.3rem; font-size: 0.92rem; line-height: 1.5; }
.form-alert--err { background: #fdecea; border: 1px solid #f3c3bd; color: #8a1c13; }