/* Informazione — foglio unico, squadrato, carta e vermiglio */

/* ------------------------------------------------------------- caratteri */

@font-face {
  font-family: "Source Serif 4";
  src: url("/assets/fonts/source-serif-4-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("/assets/fonts/source-serif-4-400i.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("/assets/fonts/source-serif-4-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Serif";
  src: url("/assets/fonts/instrument-serif-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}


:root {
  --carta: #f3efe4;
  --foglio: #fbf8f0;
  --ink: #191712;
  --ink2: #56503f;
  --tenue: #d7cfba;
  --acc: #b2331a;
  --acc-soft: #c8554310;
  --testata: 64px;
  --lettura: 40rem;
  --indice: 190px;
  --gap: 56px;
  --pad: 28px;
}

html[data-tema="notte"] {
  --carta: #12100c;
  --foglio: #1b1812;
  --ink: #f4efe2;
  --ink2: #b6ac95;
  --tenue: #373126;
  --acc: #ff6a41;
  --acc-soft: #ff6a4114;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 100%;
  scroll-padding-top: calc(var(--testata) + 18px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--carta);
  color: var(--ink);
  font-family: "Source Serif 4", "DejaVu Serif", Georgia, serif;
  font-size: 1.1875rem;
  line-height: 1.62;
  font-optical-sizing: auto;
  overflow-wrap: break-word;
}

::selection { background: var(--acc); color: var(--foglio); }

a { color: var(--acc); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; }

/* ---------------------------------------------------------------- testata */

.salta {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--carta);
  padding: 10px 16px;
  font-family: "IBM Plex Mono", monospace;
  font-size: .75rem;
  z-index: 10;
}
.salta:focus { left: 12px; top: 12px; }

.testata {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--carta);
  border-bottom: 1px solid var(--tenue);
}

.testata-in {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--pad);
  min-height: var(--testata);
  display: flex;
  align-items: center;
  gap: 22px;
}

.marchio {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-decoration: none;
  color: var(--ink);
  min-width: 0;
}
.marchio:hover .marchio-nome { color: var(--acc); }
.marchio-nome {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: -.01em;
  transition: color .15s;
}
.marchio-claim {
  font-family: "IBM Plex Mono", monospace;
  font-size: .58rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink2);
  margin-top: 4px;
  white-space: nowrap;
}

.nav {
  margin-left: auto;
  display: flex;
  gap: 20px;
  align-items: center;
}
.nav a {
  font-family: "IBM Plex Mono", monospace;
  font-size: .72rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink2);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a.attivo { color: var(--ink); border-bottom-color: var(--acc); }

.comandi { display: flex; gap: 6px; align-items: center; }
.tasto {
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  line-height: 1;
  color: var(--ink2);
  background: transparent;
  border: 1px solid var(--tenue);
  border-radius: 0;
  padding: 7px 8px;
  cursor: pointer;
  min-height: 30px;
}
.tasto:hover { color: var(--ink); border-color: var(--ink2); }
.tasto[aria-pressed="true"] { color: var(--foglio); background: var(--ink); border-color: var(--ink); }
.tasto-notte[aria-pressed="true"] { color: var(--ink); background: transparent; border-color: var(--ink2); }

/* ----------------------------------------------------------------- foglio */

.foglio {
  max-width: 1140px;
  margin: 0 auto;
  padding: 52px var(--pad) 96px;
}

.foglio.stretto { max-width: calc(42rem + 2 * var(--pad)); }

.foglio.capitolo {
  max-width: calc(var(--indice) + var(--gap) + var(--lettura) + 2 * var(--pad));
  display: grid;
  grid-template-columns: var(--indice) minmax(0, var(--lettura));
  gap: var(--gap);
  justify-content: center;
  align-items: start;
}

.prosa { min-width: 0; }

/* ------------------------------------------------------------- tipografia */

h1, h2 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  letter-spacing: -.012em;
}

.foglio h1 {
  font-size: clamp(2.4rem, 5.6vw, 3.7rem);
  line-height: 1.02;
  margin: 0 0 18px;
}

h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.05rem);
  line-height: 1.12;
  margin: 3.2rem 0 1rem;
  border-top: 1px solid var(--tenue);
  padding-top: 1.1rem;
}

h3 {
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 600;
  font-size: 1.06rem;
  line-height: 1.35;
  margin: 2.1rem 0 .5rem;
}

p { margin: 0 0 1.15em; }

.titolo-grande {
  font-size: clamp(2.7rem, 7.4vw, 4.7rem) !important;
  line-height: .97 !important;
  letter-spacing: -.02em !important;
  margin-bottom: 26px !important;
}

.occhiello {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--ink2);
  margin-bottom: 2.2rem;
  max-width: 34rem;
}

.etichetta {
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink2);
  margin: 0 0 12px;
  line-height: 1.5;
}

.nota {
  max-width: var(--lettura);
  font-size: .95rem;
  line-height: 1.55;
  color: var(--ink2);
  border-top: 1px solid var(--tenue);
  padding-top: 14px;
  margin-top: 26px;
}

.firma {
  font-family: "IBM Plex Mono", monospace;
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink2);
  margin-top: 40px;
}

strong { font-weight: 600; }
em { font-style: italic; }

code {
  font-family: "IBM Plex Mono", monospace;
  font-size: .86em;
  background: var(--foglio);
  border: 1px solid var(--tenue);
  padding: 1px 4px;
}

.cit {
  font-family: "IBM Plex Mono", monospace;
  font-size: .72em;
  color: var(--acc);
  text-decoration: none;
  border-bottom: 1px dotted var(--acc);
  white-space: nowrap;
}

/* ------------------------------------------------------------- apertura */

.apertura-pagina { padding-bottom: 44px; border-bottom: 1px solid var(--tenue); margin-bottom: 12px; }

/* -------------------------------------------------------------- sommario */

.sommario { margin-bottom: 56px; }
.sommario > .etichetta { margin: 26px 0 10px; }

.voce {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: baseline;
  padding: 22px 16px;
  border-top: 1px solid var(--tenue);
  text-decoration: none;
  color: var(--ink);
  transition: background .12s;
}
.sommario .voce:last-of-type { border-bottom: 1px solid var(--tenue); }
.voce:hover { background: var(--foglio); box-shadow: inset 3px 0 0 var(--acc); }
.voce-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: .82rem;
  color: var(--acc);
}
.voce-corpo { min-width: 0; }
.voce-titolo {
  display: block;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.6rem;
  line-height: 1.12;
}
.voce-somm {
  display: block;
  max-width: var(--lettura);
  font-size: .96rem;
  color: var(--ink2);
  line-height: 1.45;
  margin-top: 6px;
}
.voce-min {
  font-family: "IBM Plex Mono", monospace;
  font-size: .72rem;
  color: var(--ink2);
  white-space: nowrap;
}

.chiusa h2 { border-top: 1px solid var(--tenue); }
.chiusa p { max-width: var(--lettura); }

/* ---------------------------------------------------------------- indice */

.indice {
  position: sticky;
  top: calc(var(--testata) + 26px);
  align-self: start;
}
.indice .etichetta { margin-bottom: 14px; }
.indice a {
  display: block;
  font-size: .92rem;
  line-height: 1.35;
  color: var(--ink2);
  text-decoration: none;
  padding: 5px 0 5px 14px;
  border-left: 1px solid var(--tenue);
  margin-left: 1px;
}
.indice a:hover { color: var(--ink); border-left-color: var(--ink2); }
.indice a.corrente { color: var(--ink); border-left: 2px solid var(--acc); margin-left: 0; }

/* ----------------------------------------------------------------- testo */

.testo > p:first-child::first-letter {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 3.5em;
  line-height: .78;
  float: left;
  padding: .04em .1em 0 0;
  color: var(--acc);
}

blockquote {
  margin: 34px 0;
  padding: 2px 0 2px 22px;
  border-left: 2px solid var(--acc);
}
blockquote p {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.5rem;
  line-height: 1.28;
  margin: 0 0 .45em;
}
blockquote p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1.3em; padding-left: 1.3rem; }
li { margin-bottom: .5em; }
li::marker { color: var(--acc); }

hr { border: 0; border-top: 1px solid var(--tenue); margin: 2.4rem 0; }

.formula {
  font-family: "Source Serif 4", "DejaVu Serif", Georgia, serif;
  font-size: 1.32rem;
  line-height: 1.5;
  margin: 1.6rem 0 1.8rem;
  padding: 14px 0 14px 18px;
  border-left: 1px solid var(--tenue);
  color: var(--ink);
}
.formula sub, .formula sup { font-size: .62em; }
sup, sub { line-height: 0; }

.scheda {
  background: var(--foglio);
  border: 1px solid var(--tenue);
  border-left: 3px solid var(--acc);
  padding: 20px 22px 6px;
  margin: 30px 0;
  font-size: .96rem;
  line-height: 1.55;
}
.scheda .etichetta { color: var(--acc); margin-bottom: 6px; }
.scheda h3 { margin-top: 0; }

.figura {
  margin: 38px 0;
  padding: 16px;
  border: 1px solid var(--tenue);
  background: var(--foglio);
}
.figura img, .figura svg { display: block; width: 100%; height: auto; }
.figura svg text {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: .05em;
  fill: var(--ink2);
}
.figura svg text.big {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 46px;
  letter-spacing: 0;
  fill: var(--ink);
}
.figura svg text.anno { font-size: 15px; fill: var(--acc); }
.figura svg text.pic { font-size: 11px; }
.figura svg .linea { stroke: var(--tenue); stroke-width: 1; fill: none; }
.figura svg .accento { stroke: var(--acc); stroke-width: 1.5; fill: none; }
.figura svg .pieno { fill: var(--acc); stroke: none; }
.figura figcaption {
  font-family: "IBM Plex Mono", monospace;
  font-size: .72rem;
  line-height: 1.5;
  color: var(--ink2);
  margin-top: 12px;
}

/* ---------------------------------------------------------------- frecce */

.frecce {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 16px;
  border-top: 1px solid var(--tenue);
  margin-top: 56px;
  padding-top: 22px;
}
.freccia {
  flex: 1 1 40%;
  min-width: 0;
  display: block;
  border: 1px solid var(--tenue);
  background: var(--foglio);
  padding: 14px 16px;
  text-decoration: none;
  color: var(--ink);
}
.freccia:hover { border-color: var(--acc); }
.freccia .etichetta { margin-bottom: 4px; color: var(--acc); }
.freccia span:last-child {
  display: block;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.2rem;
  line-height: 1.15;
}
.freccia.succ { text-align: right; }

/* ---------------------------------------------------------------- fonti */

.fonti { padding-left: 1.5rem; }
.fonti li { margin-bottom: 18px; font-size: .93rem; line-height: 1.5; }
.fonti li::marker {
  font-family: "IBM Plex Mono", monospace;
  font-size: .8rem;
  color: var(--acc);
}
.fonti li:target { background: var(--acc-soft); box-shadow: 0 0 0 6px var(--acc-soft); }
.fonti a { font-family: "IBM Plex Mono", monospace; font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; text-decoration: none; }

.bottone {
  display: inline-block;
  border: 1px solid var(--ink);
  padding: 11px 18px;
  font-family: "IBM Plex Mono", monospace;
  font-size: .76rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.bottone:hover { background: var(--ink); color: var(--carta); }

/* ---------------------------------------------------------------- piede */

.piede { border-top: 1px solid var(--tenue); padding: 26px var(--pad) 34px; }
.piede-in {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
}
.piede p {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  line-height: 1.7;
  color: var(--ink2);
}
.piede a { color: var(--ink2); text-decoration: none; border-bottom: 1px solid var(--tenue); }
.piede a:hover { color: var(--acc); border-bottom-color: var(--acc); }

/* ------------------------------------------------------------ adattamenti */

@media (max-width: 980px) {
  .marchio-claim { display: none; }
  .foglio.capitolo {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    max-width: calc(var(--lettura) + 2 * var(--pad));
  }
  .indice {
    position: static;
    border-bottom: 1px solid var(--tenue);
    padding-bottom: 14px;
    margin-bottom: 26px;
  }
  .indice .etichetta { margin-bottom: 8px; }
  .indice a {
    display: inline-block;
    border-left: 0;
    padding: 2px 0;
    margin: 0 14px 2px 0;
    font-size: .84rem;
  }
  .indice a.corrente { border-left: 0; text-decoration: underline; text-decoration-color: var(--acc); }
}

@media (max-width: 760px) {
  :root { --testata: 104px; }
  .testata-in { flex-wrap: wrap; padding-top: 8px; padding-bottom: 0; row-gap: 0; }
  .nav { order: 3; flex-basis: 100%; margin-left: 0; border-top: 1px solid var(--tenue); padding: 6px 0; gap: 18px; }
  .comandi { margin-left: auto; }
  .foglio { padding-top: 34px; padding-bottom: 64px; }
  .voce { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; padding: 18px 10px; }
  .voce-min { display: none; }
  .voce-titolo { font-size: 1.38rem; }
  blockquote p { font-size: 1.3rem; }
  .frecce { gap: 12px; }
  .freccia { flex: 1 1 100%; }
  .freccia.succ { text-align: left; }
}

@media (max-width: 420px) {
  :root { --pad: 18px; --testata: 100px; }
  body { font-size: 1.0625rem; }
  .tasto { padding: 7px 6px; font-size: .64rem; }
  .marchio-nome { font-size: 1.35rem; }
  .nav { gap: 14px; }
  .nav a { font-size: .66rem; letter-spacing: .06em; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media print {
  .testata, .piede, .indice, .frecce, .comandi { display: none; }
  body { background: #fff; color: #000; }
}