/* Rosso e tipografia coordinati con homepage e slide. Font locali, SIL OFL. */
@font-face {
  font-family: Inter;
  src: url("fonts/inter-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Noto Serif";
  src: url("fonts/noto-serif-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
:root {
  --libro-rosso: #9a0000;
  --libro-rosso-scuro: #75000f;
  --libro-inchiostro: #252321;
  --libro-secondario: #6a655f;
  --libro-linea: #ebe6e0;
  --libro-carta: #faf8f5;
  --libro-tinta: #f4f0eb;
  --libro-rosa: #f8eded;
  --libro-verde: #2f6b3b;
  --libro-verde-scuro: #234f2c;
  --libro-verde-chiaro: #eaf2eb;
  --libro-raggio: 10px;
  --libro-sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --libro-serif: "Noto Serif", Georgia, serif;
  --bs-body-font-family: var(--libro-sans);
  --bs-body-color: var(--libro-inchiostro);
  --bs-link-color: var(--libro-rosso);
  --bs-link-hover-color: var(--libro-rosso-scuro);
}
body {
  font-family: var(--libro-sans);
  color: var(--libro-inchiostro);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--libro-rosso); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--libro-rosso-scuro); }
::selection { background: var(--libro-rosa); color: var(--libro-rosso-scuro); }
:focus-visible { outline: 2px solid var(--libro-rosso); outline-offset: 3px; border-radius: 4px; }

/* Colonna di lettura e gerarchia dei titoli: spazio bianco al posto delle linee. */
main.content { padding-top: 2.5rem; padding-bottom: 2.5rem; }
main.content p, main.content li { font-size: 1.04rem; }
main.content p { margin-bottom: 1.15rem; }
main.content li { margin-bottom: .3rem; }
main.content h1, main.content h2 {
  font-family: var(--libro-serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.01em;
  text-wrap: pretty;
}
main.content h1 { font-size: clamp(1.9rem, 3.2vw, 2.55rem); }
main.content h1.title { margin-bottom: 1.6rem; }
main.content h2 {
  font-size: 1.55rem;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0;
  border-bottom: 0;
}
main.content h3 {
  font-family: var(--libro-sans);
  font-size: 1.12rem;
  font-weight: 650;
  margin-top: 2rem;
}
main.content .header-section-number { color: var(--libro-rosso); margin-right: .15em; }
#title-block-header { margin-bottom: 2.4rem; }
#title-block-header::before {
  content: "";
  display: block;
  width: 2.5rem;
  height: 3px;
  margin-bottom: 1.1rem;
  border-radius: 3px;
  background: var(--libro-rosso);
}
#title-block-header .title { margin-top: 0; }
#title-block-header .subtitle { color: var(--libro-secondario); font-size: 1.12rem; margin-top: .65rem; }
.quarto-title-meta-heading { color: var(--libro-secondario); font-size: .68rem; letter-spacing: .08em; }
#title-block-header .quarto-title-meta-contents p { font-size: .86rem; }
main.content blockquote { color: var(--libro-secondario); border-left: 2px solid var(--libro-rosso); padding-left: 1.2rem; font-style: italic; }

/* Indice: titolo tipografico invece di un blocco pieno, voci arrotondate. */
#quarto-sidebar {
  background: var(--libro-carta);
  border-right: 0;
  box-shadow: inset -1px 0 var(--libro-linea);
  padding: 1.6rem 1.1rem;
}
#quarto-sidebar .sidebar-header { margin-top: 0 !important; padding-top: 0 !important; }
#quarto-sidebar .sidebar-title {
  padding: 0 .45rem !important;
  margin-bottom: 1.1rem !important;
  font-family: var(--libro-serif);
  font-size: 1.32rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.01em;
}
#quarto-sidebar .sidebar-title::after {
  content: "";
  display: block;
  width: 2rem;
  height: 3px;
  margin-top: .8rem;
  border-radius: 3px;
  background: var(--libro-rosso);
}
#quarto-sidebar .sidebar-title a { color: var(--libro-inchiostro); text-decoration: none; }
#quarto-sidebar .sidebar-title a:hover { color: var(--libro-rosso); }
#quarto-sidebar .sidebar-tools-main { margin-top: .4rem; }
#quarto-sidebar .quarto-navigation-tool { opacity: .7; }
#quarto-sidebar .quarto-navigation-tool:hover { opacity: 1; color: var(--libro-rosso); }
#quarto-sidebar .sidebar-search { padding: 0 .2rem; margin-bottom: .6rem; }
#quarto-sidebar .aa-Autocomplete .aa-Form { background: #fff; border-color: var(--libro-linea); border-radius: 999px; }
#quarto-sidebar .aa-Autocomplete .aa-Form:focus-within { border-color: var(--libro-rosso); box-shadow: 0 0 0 3px var(--libro-rosa); }
#quarto-sidebar .sidebar-item-container { margin-top: 0; }
#quarto-sidebar .sidebar-item-text { font-size: .8rem; line-height: 1.4; padding: .38rem .55rem; color: #4a4540; }
#quarto-sidebar .sidebar-item-section > .sidebar-item-container { margin-top: 1.1rem; }
#quarto-sidebar .sidebar-item-section > .sidebar-item-container > .sidebar-item-text {
  font-size: .7rem;
  font-weight: 650;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--libro-secondario);
}
#quarto-sidebar .sidebar-section { border-left: 0; padding-left: 0; }
#quarto-sidebar .sidebar-link { border-radius: 8px; transition: background-color .15s, color .15s; }
#quarto-sidebar .sidebar-link:hover { color: var(--libro-rosso); background: var(--libro-tinta); }
#quarto-sidebar .sidebar-link.active { background: var(--libro-rosa); color: var(--libro-rosso); font-weight: 600; }
#quarto-sidebar .chapter-number { color: #a39d96; margin-right: .1em; }
#quarto-sidebar .sidebar-link.active .chapter-number { color: var(--libro-rosso); }
#quarto-header nav.quarto-secondary-nav { background: var(--libro-carta); color: var(--libro-inchiostro); border-bottom: 1px solid var(--libro-linea); box-shadow: none; }
#quarto-header .quarto-secondary-nav a, #quarto-header .quarto-secondary-nav .btn,
#quarto-header .quarto-secondary-nav .breadcrumb-item { color: var(--libro-inchiostro); }
#quarto-header .quarto-secondary-nav .breadcrumb-item + .breadcrumb-item::before { color: #b5aea7; }
#quarto-header .quarto-secondary-nav .quarto-btn-toggle { color: var(--libro-rosso); }

/* Apertura editoriale: titolo grande su bianco, nessun riquadro. */
.book-home #title-block-header { padding: .5rem 0 0; margin-bottom: 1.2rem; }
.book-home #title-block-header::before { width: 3rem; }
.book-home #title-block-header .title { font-size: clamp(2.2rem, 4.4vw, 3.1rem); }
.book-home #title-block-header .quarto-title-meta { margin-top: 1.2rem; }
.book-home #introduzione > h1 { font-size: 1.55rem; margin-top: 2.6rem; }
.book-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.2rem 0 .7rem; }
.book-actions p { display: contents; }
.book-actions .btn {
  border: 1px solid var(--libro-rosso);
  border-radius: 999px;
  padding: .6rem 1.25rem;
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color .15s, color .15s, box-shadow .15s;
}
.book-actions .btn-primary { background: var(--libro-rosso); color: #fff; }
.book-actions .btn-primary:hover { background: var(--libro-rosso-scuro); border-color: var(--libro-rosso-scuro); box-shadow: 0 4px 14px rgba(154, 0, 0, .18); }
.book-actions .btn-outline-primary { color: var(--libro-rosso); background: #fff; }
.book-actions .btn-outline-primary:hover { background: var(--libro-rosa); color: var(--libro-rosso-scuro); }
.book-status p { color: var(--libro-secondario); font-size: .76rem !important; }

/* Riquadri: fondo tenue e angoli morbidi, senza cornice. */
div.callout {
  border: 0 !important;
  border-left: 0 !important;
  background: var(--libro-tinta);
  border-radius: var(--libro-raggio);
  box-shadow: inset 3px 0 var(--libro-rosso);
  padding: 1rem 1.3rem;
  margin: 2rem 0;
}
div.callout.callout-style-default > .callout-header { background: transparent !important; color: var(--libro-rosso); font-weight: 650; font-size: .82rem; letter-spacing: .05em; text-transform: uppercase; padding: 0 0 .5rem; }
div.callout.callout-style-default .callout-body { font-size: .97rem; padding: 0; }
div.callout .callout-body p, div.callout .callout-body li { font-size: inherit; }
div.callout .callout-body > :last-child { margin-bottom: .2rem; }
details:not(.callout) { border: 1px solid var(--libro-linea); border-radius: var(--libro-raggio); padding: .8rem 1.1rem; margin: 1.4rem 0; }
details:not(.callout)[open] { background: var(--libro-carta); }
details > summary { cursor: pointer; font-weight: 600; }
details > summary::marker { color: var(--libro-rosso); }

/* Figure su bianco, didascalie secondarie e tabelle con sole righe orizzontali. */
main.content figure { margin: 2.2rem 0; }
main.content figcaption, .panel-caption, .table-caption { color: var(--libro-secondario); font-size: .84rem; line-height: 1.55; text-align: left; margin-top: .6rem; }
main.content table { font-size: .9rem; font-variant-numeric: tabular-nums; border-color: var(--libro-linea); }
main.content table > thead { border-bottom: 1.5px solid var(--libro-inchiostro); }
main.content table > thead > tr > th { background: transparent; font-weight: 650; }
main.content table > tbody > tr:last-child > * { border-bottom-color: var(--libro-inchiostro); }
main.content table > :not(caption) > * > * { padding: .6rem .65rem; }
.footnotes { color: var(--libro-secondario); font-size: .85rem; }
.nav-page { border-top: 0; padding-top: 1rem; }
.nav-page .nav-page-text { font-size: .82rem; line-height: 1.4; }
.nav-page a { color: var(--libro-rosso); border-radius: var(--libro-raggio); padding: .6rem .8rem; transition: background-color .15s; }
.nav-page a:hover { background: var(--libro-tinta); text-decoration: none; }
.nav-footer { border-top: 1px solid var(--libro-linea); background: transparent; }
.nav-footer, .nav-footer a { color: var(--libro-secondario); font-size: .75rem; }

/* Classi già presenti nei contenuti. */
.abstract { color: var(--libro-secondario); font-style: italic; margin: 1.3rem 1.5rem; }
.comment { color: var(--libro-rosso); font-style: italic; }

/* Parti «Strumenti»: capitoli tecnici, segnalati in verde. Si leggono da soli o
   si saltano; i capitoli concettuali vi rimandano con riquadri verdi. */
#quarto-sidebar .parte-strumenti { color: var(--libro-verde); }
#quarto-sidebar .parte-strumenti::before {
  content: "";
  display: inline-block;
  width: .55rem;
  height: .55rem;
  margin-right: .4rem;
  border-radius: 2px;
  background: var(--libro-verde);
  vertical-align: .05rem;
}
#quarto-sidebar .sidebar-link[href*="dati-misure-punteggi"] { box-shadow: inset 2px 0 var(--libro-verde); border-radius: 0 8px 8px 0; }
#quarto-sidebar .sidebar-link[href*="dati-misure-punteggi"]:hover { color: var(--libro-verde); background: var(--libro-verde-chiaro); }
#quarto-sidebar .sidebar-link.active[href*="dati-misure-punteggi"] { background: var(--libro-verde-chiaro); color: var(--libro-verde); }
#quarto-sidebar .sidebar-link.active[href*="dati-misure-punteggi"] .chapter-number { color: var(--libro-verde); }
.capitolo-strumenti main.content { border-left: 4px solid var(--libro-verde); padding-left: 1.6rem; }
.capitolo-strumenti #title-block-header::before { background: var(--libro-verde); }
.capitolo-strumenti #title-block-header .title::before {
  content: "Strumenti";
  display: block;
  margin-bottom: .5rem;
  font-family: var(--libro-sans);
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--libro-verde);
}
.capitolo-strumenti main.content .header-section-number { color: var(--libro-verde); }
.capitolo-strumenti main.content a { color: var(--libro-verde); }
.capitolo-strumenti main.content a:hover { color: var(--libro-verde-scuro); }
.capitolo-strumenti div.callout { box-shadow: inset 3px 0 var(--libro-verde); background: var(--libro-verde-chiaro); }
.capitolo-strumenti div.callout.callout-style-default > .callout-header { color: var(--libro-verde); }
.inserto-strumenti {
  background: var(--libro-verde-chiaro);
  border-radius: var(--libro-raggio);
  box-shadow: inset 3px 0 var(--libro-verde);
  padding: 1rem 1.3rem;
  margin: 0 0 2.2rem;
  font-size: .95rem;
}
.inserto-strumenti > :last-child { margin-bottom: 0; }
.inserto-strumenti strong:first-child { color: var(--libro-verde); }
.rimando-strumenti {
  border-left: 2px solid var(--libro-verde);
  padding: .3rem 0 .3rem 1rem;
  margin: 1.4rem 0;
  font-size: .92rem;
  font-style: italic;
  color: #3d4a40;
}
.rimando-strumenti > :last-child { margin-bottom: 0; }
.rimando-strumenti strong:first-child { color: var(--libro-verde); font-style: normal; letter-spacing: .04em; }
.rimando-strumenti a { color: var(--libro-verde); }

@media (max-width: 991.98px) {
  main.content { padding-top: 1.5rem; }
  .quarto-secondary-nav .quarto-page-breadcrumbs { font-size: .8rem; }
}
@media (max-width: 575.98px) {
  main.content h1 { font-size: 1.8rem; }
  main.content h2 { font-size: 1.35rem; margin-top: 2.4rem; }
  main.content p, main.content li { font-size: 1rem; }
  div.callout { padding: .85rem 1rem; }
  .abstract { margin-inline: .5rem; }
}
@media print {
  .book-actions, .book-status, .nav-footer { display: none; }
}