/* =========================================================================
   Tra due mondi — Landing page
   Mobile-first · HTML+CSS only · EB Garamond · palette letteraria italiana
   ========================================================================= */

/* ---------- Reset minimale ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }

/* ---------- Tokens ---------- */
:root {
  /* Palette estratta dalla cover */
  --bg:           #F5EFE6;   /* avorio / crema base */
  --bg-soft:      #FAF6EE;   /* avorio più chiaro per sezioni alternate */
  --bg-card:      #FFFFFF;   /* bianco per elementi in risalto */
  --text:         #1F1410;   /* marrone-nerissimo */
  --text-soft:    #5C4A3F;   /* marrone medio per testi secondari */
  --rule:         rgba(31, 20, 16, 0.14);

  --accent-brown:    #8B5A3C;   /* marrone caldo */
  --accent-gold:     #B68B5C;   /* oro della linea sulla cover */
  --accent-rose:     #B07166;   /* terracotta */
  --accent-burgundy: #6B2C2C;   /* bordeaux, usato per CTA */

  /* Tipografia */
  --font-serif: "EB Garamond", Georgia, "Times New Roman", "DejaVu Serif", serif;

  /* Layout */
  --container:        720px;
  --container-wide:   1080px;
  --gutter:           clamp(1.25rem, 4vw, 2rem);
  --section-y:        clamp(4rem, 10vw, 7rem);

  /* Dettagli */
  --radius: 3px;
  --shadow-cover: 0 24px 50px -22px rgba(31, 20, 16, 0.45),
                  0 6px 16px -8px rgba(31, 20, 16, 0.25);
  --transition: 0.25s ease;
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background-color: var(--accent-rose);
  color: var(--bg);
}

/* ---------- Helpers ---------- */
main { display: block; }
section { padding: var(--section-y) var(--gutter); }
section:nth-of-type(even) { background-color: var(--bg-soft); }

.section__eyebrow {
  font-size: 0.8125rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent-brown);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  text-align: center;
  padding-top: clamp(3rem, 8vw, 4.5rem);
  padding-bottom: clamp(4rem, 10vw, 6rem);
  background:
    radial-gradient(ellipse at top, rgba(182, 139, 92, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  position: relative;
}

.hero::before {
  /* Linea dorata decorativa in cima, richiamo della cover */
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: clamp(2.5rem, 6vw, 4rem);
  background: linear-gradient(180deg, transparent, var(--accent-gold));
}

.hero__eyebrow {
  font-size: 0.8125rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent-brown);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 11vw, 4.5rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero__tagline {
  font-style: italic;
  font-size: clamp(1.0625rem, 2.5vw, 1.375rem);
  color: var(--text-soft);
  line-height: 1.45;
  max-width: 28ch;
  margin: 0 auto 2.5rem;
}

.hero__author {
  font-size: 0.9375rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-soft);
  font-weight: 400;
  margin-bottom: 2.25rem;
}

.hero__author strong {
  color: var(--text);
  font-weight: 500;
}

.hero__cta {
  display: inline-block;
  padding: 1.0625rem 2.5rem;
  background-color: var(--accent-burgundy);
  color: var(--bg);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid var(--accent-burgundy);
  transition: background-color var(--transition),
              transform var(--transition),
              box-shadow var(--transition);
  box-shadow: 0 4px 14px -6px rgba(107, 44, 44, 0.5);
}

.hero__cta:hover,
.hero__cta:focus-visible {
  background-color: var(--accent-brown);
  border-color: var(--accent-brown);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px -8px rgba(107, 44, 44, 0.6);
  outline: none;
}

.hero__cta:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 3px;
}

.hero__formats {
  font-size: 0.875rem;
  color: var(--text-soft);
  font-style: italic;
  margin-top: 1.25rem;
}

.hero__cover-wrap {
  margin: 0 auto;
  max-width: 320px;
}

.hero__cover {
  width: 100%;
  height: auto;
  border-radius: 2px;
  box-shadow: var(--shadow-cover);
  transform: rotate(-1.5deg);
  transition: transform 0.4s ease;
}

.hero__cover:hover { transform: rotate(0deg) scale(1.01); }

/* =========================================================================
   SINOSSI
   ========================================================================= */
.sinossi {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}

.sinossi__pullquote {
  font-family: var(--font-serif);
  font-size: clamp(1.625rem, 4.5vw, 2.25rem);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-burgundy);
  line-height: 1.35;
  margin-bottom: 3rem;
  max-width: 24ch;
  margin-left: auto;
  margin-right: auto;
}

.sinossi__pullquote--accent {
  color: var(--text);
}

.sinossi__body p {
  text-align: left;
  margin-bottom: 1.5rem;
  text-indent: 1.5em;
}

.sinossi__body p:first-child { text-indent: 0; }

.sinossi__body p:first-child::first-letter {
  font-size: 3.5em;
  float: left;
  line-height: 0.85;
  padding-right: 0.12em;
  padding-top: 0.05em;
  font-weight: 500;
  color: var(--accent-burgundy);
}

.sinossi__closing {
  text-align: center;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--text-soft);
  text-indent: 0 !important;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

/* =========================================================================
   BIO AUTORE
   ========================================================================= */
.bio {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  text-align: center;
  align-items: center;
}

.bio__portrait {
  margin: 0;
  display: flex;
  justify-content: center;
}

.bio__portrait img {
  width: clamp(140px, 35vw, 220px);
  height: auto;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background-color: var(--bg-card);
  padding: 0.5rem;
}

.bio__name {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  color: var(--text);
}

.bio__text {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin: 0 auto 1.5rem;
  max-width: 50ch;
  color: var(--text);
}

.bio__text em {
  font-style: italic;
  color: var(--accent-brown);
}

.bio__contact a {
  color: var(--accent-burgundy);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: border-color var(--transition), color var(--transition);
}

.bio__contact a:hover,
.bio__contact a:focus-visible {
  color: var(--accent-brown);
  border-bottom-color: var(--accent-brown);
  outline: none;
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
  text-align: center;
  padding: 2.25rem var(--gutter);
  border-top: 1px solid var(--rule);
  font-size: 0.875rem;
  color: var(--text-soft);
  background-color: var(--bg);
}

.footer p { margin: 0.25rem 0; }

.footer__links {
  margin-top: 0.5rem !important;
}

.footer a {
  color: var(--text-soft);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--accent-burgundy);
  text-decoration-color: var(--accent-burgundy);
  outline: none;
}

/* =========================================================================
   TABLET (>= 768px)
   ========================================================================= */
@media (min-width: 768px) {
  body { font-size: 1.1875rem; }

  .sinossi__body p { text-indent: 2em; }

  .bio {
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    text-align: left;
    align-items: center;
  }

  .bio__portrait { justify-content: flex-end; }

  .bio__portrait img { width: 100%; max-width: 220px; }

  .bio__text { margin-left: 0; margin-right: 0; }
}

/* =========================================================================
   DESKTOP (>= 1024px)
   ========================================================================= */
@media (min-width: 1024px) {
  .hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto auto auto auto;
    gap: 0 4rem;
    align-items: center;
    text-align: left;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: clamp(5rem, 10vw, 7rem) var(--gutter) clamp(5rem, 10vw, 7rem);
  }

  .hero__text {
    grid-column: 1;
    grid-row: 1 / span 6;
  }

  .hero__cover-wrap {
    grid-column: 2;
    grid-row: 1 / span 6;
    max-width: 420px;
    margin: 0 0 0 auto;
  }

  .hero__tagline { margin-left: 0; margin-right: 0; }

  .bio {
    grid-template-columns: 260px 1fr;
    gap: 4rem;
  }

  .bio__portrait img { max-width: 260px; }
}

/* =========================================================================
   ACCESSIBILITÀ
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero__cover { transform: none; }
  .hero__cover:hover { transform: none; }
}

@media (prefers-color-scheme: dark) {
  /* Manteniamo la palette calda letteraria anche in dark mode.
     Per coerenza tipografica e identitaria del libro. */
  :root {
    --bg:           #1F1812;
    --bg-soft:      #261E17;
    --bg-card:      #2C231B;
    --text:         #F5EFE6;
    --text-soft:    #C8B8A8;
    --rule:         rgba(245, 239, 230, 0.14);
    --accent-brown: #C8A07F;
    --accent-gold:  #D4B187;
    --accent-rose:  #D49A8E;
    --accent-burgundy: #C2827A;
  }
  .hero__cta { color: var(--bg); }
}