/* Edizioni: base comune. Tele e carte tinte, caratteri lapidari e aldini, testata, piede, passaggi. */

:root {
  --ocra: #C9973F;
  --rosa: #D9A79B;
  --verderame: #4F7A6D;
  --indaco: #2E3F6E;
  --pietra: #D3B27C;
  --inchiostro: #1C1B22;
  --chiaro: #FCFAF4;
  --carta-tavola: #F6F2E9;
  --f-lap: "Marcellus", "Optima", "Candara", "Segoe UI", sans-serif;
  --f-testo: "Cardo", "Bembo", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --testata-h: 64px;
  --morbido: cubic-bezier(.22, .61, .24, 1);
  --grana: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='g' x='0' y='0' width='100%25' height='100%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' seed='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .1 0 0 0 0 .09 0 0 0 0 .12 .34 0 0 0 -.12'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23g)'/%3E%3C/svg%3E");
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  background: var(--inchiostro);
  scroll-padding-top: var(--testata-h);
}
body {
  margin: 0;
  min-height: 100svh;
  font-family: var(--f-testo);
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--inchiostro);
  background: var(--ocra);
  font-kerning: normal;
  font-variant-numeric: oldstyle-nums proportional-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
body[data-scena="indice"], body[data-scena="privata"] { background: var(--indaco); }
body[data-scena="quaderni"] { background: var(--pietra); }
body[data-scena="studio"] { background: var(--indaco); }
img { display: block; max-width: 100%; }
a { color: inherit; }
p, h1, h2, h3, blockquote, figure, dl, dd, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }
h1, h2, h3 { font-weight: 400; text-wrap: balance; }
p, li, dd, figcaption { text-wrap: pretty; }
blockquote { hanging-punctuation: first; }
::selection { background: var(--inchiostro); color: var(--chiaro); }
:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; border-radius: 1px; }
.vh {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.salta {
  position: fixed; left: 1rem; top: -4rem; z-index: 100; padding: .6rem 1rem; background: var(--inchiostro); color: var(--chiaro);
  font-family: var(--f-lap); font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; text-decoration: none;
}
.salta:focus { top: 1rem; }

/* Etichette lapidarie: mai sotto i 12 px, sempre a tono pieno */
.etichetta, .testatina, .tav {
  font-family: var(--f-lap); font-size: .75rem; letter-spacing: .28em; text-transform: uppercase; line-height: 1.4;
  font-variant-numeric: lining-nums;
}
.marca {
  display: inline-grid; place-items: center; width: 2.1em; height: 2.1em; border-radius: 50%;
  border: 1px solid currentColor; font-family: var(--f-testo); font-style: italic; font-size: 1.15em; line-height: 1;
  padding-bottom: .08em;
}

/* Bottone: un cartellino stampato */
.bottone {
  display: inline-flex; align-items: center; gap: .7em; padding: .95em 1.5em .9em; border: 0; cursor: pointer;
  background: var(--inchiostro); color: var(--chiaro); text-decoration: none;
  font-family: var(--f-lap); font-size: .78rem; letter-spacing: .24em; text-transform: uppercase; line-height: 1.2;
  transition: background-color .3s var(--morbido), transform .3s var(--morbido);
}
.bottone:hover { background: #34313D; }
.bottone:active { transform: translateY(1px); background: #34313D; }
/* il cartellino è chiaro su scuro e sta su carta chiara: l’anello del fuoco è d’inchiostro, staccato */
.bottone:focus-visible { outline: 2px solid var(--inchiostro); outline-offset: 3px; }
a:active { opacity: .72; }
.bottone:active, .copertina-tavola:active { opacity: 1; }

/* ---------- Testata ---------- */
.testata {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--testata-h);
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  padding: 0 max(4.5vw, env(safe-area-inset-right)) 0 max(4.5vw, env(safe-area-inset-left));
  view-transition-name: testata;
  transition: transform .5s var(--morbido);
  color: var(--inchiostro);
}
.testata::before, .testata::after {
  content: ""; position: absolute; top: 0; bottom: 0; z-index: -1; transition: background-color .35s var(--morbido);
}
.testata::before { left: 0; right: 50%; background-color: var(--fsx, transparent); }
.testata::after { left: 50%; right: 0; background-color: var(--fdx, transparent); }
.testata[data-pieno-sx]::before, .testata[data-pieno-dx]::after { background-image: var(--grana); background-size: 240px 240px; }
.testata-piega {
  position: absolute; inset: 0 auto 0 50%; width: 9vw; transform: translateX(-50%); z-index: -1; opacity: 0;
  background: linear-gradient(90deg, transparent, rgba(28, 27, 34, .035) 34%, rgba(28, 27, 34, .11) 50%, rgba(28, 27, 34, .035) 66%, transparent);
  transition: opacity .3s;
  pointer-events: none;
}
.testata.con-piega .testata-piega { opacity: 1; }
.testata.nascosta { transform: translateY(-100%); }
.marchio {
  font-family: var(--f-lap); font-size: .86rem; letter-spacing: .26em; text-transform: uppercase; text-decoration: none;
  white-space: nowrap; transition: color .35s var(--morbido);
}
.testata nav { display: flex; gap: clamp(1.2rem, 2.4vw, 2.6rem); transition: color .35s var(--morbido); }
.testata nav a {
  font-family: var(--f-lap); font-size: .76rem; letter-spacing: .22em; text-transform: uppercase; text-decoration: none;
  padding: .5rem 0; white-space: nowrap; text-underline-offset: .55em; text-decoration-thickness: 1px;
}
.testata nav a:hover, .testata nav a[aria-current="page"] { text-decoration: underline; }
.testata[data-tono-sx="chiaro"] .marchio { color: var(--chiaro); }
.testata[data-tono-dx="chiaro"] nav { color: var(--chiaro); }

@media (max-width: 899px) { body { font-size: 1.125rem; } }
/* testata su due righe solo dove serve: schermo stretto e abbastanza alto (in orizzontale resta su una riga) */
@media (max-width: 899px) and (min-height: 561px), (max-width: 599px) {
  :root { --testata-h: 84px; }
  .testata {
    flex-direction: column; justify-content: center; gap: .35rem; height: var(--testata-h);
    padding-top: env(safe-area-inset-top);
  }
  .marchio { font-size: .8rem; letter-spacing: .24em; }
  .testata nav { gap: 1.05rem; color: inherit; }
  .testata nav a { font-family: var(--f-testo); font-size: .95rem; letter-spacing: 0; text-transform: none; padding: .3rem 0; }
  .testata[data-tono-sx="chiaro"] nav, .testata[data-tono-sx="chiaro"] .marchio { color: var(--chiaro); }
  .testata[data-tono-sx="scuro"] nav { color: var(--inchiostro); }
  .testata::before { right: 0; }
  .testata::after { display: none; }
}
/* telefono in orizzontale: una riga sola, la voce in tondo come sul telefono */
@media (min-width: 600px) and (max-width: 899px) and (max-height: 560px) {
  .testata { gap: 1.2rem; padding: 0 max(4vw, env(safe-area-inset-right)) 0 max(4vw, env(safe-area-inset-left)); }
  .marchio { font-size: .76rem; letter-spacing: .2em; }
  .testata nav { gap: 1rem; }
  .testata nav a { font-family: var(--f-testo); font-size: .95rem; letter-spacing: 0; text-transform: none; }
}

/* ---------- Scene e passaggi ---------- */
main { display: block; min-height: 100svh; transition: opacity .26s var(--morbido); }
main:focus, main:focus-visible { outline: none; }
main.dissolvi { opacity: 0; }
.scena[hidden] { display: none; }

::view-transition-old(root) { animation: .55s var(--morbido) both svanisce; }
::view-transition-new(root) { animation: .55s var(--morbido) both appare; }
::view-transition-group(tavola-viva) { animation-duration: 1s; animation-timing-function: cubic-bezier(.32, .72, .12, 1); z-index: 40; }
/* ogni istantanea della tavola tiene le sue proporzioni: la foto resta allineata e il credito della copertina sfuma sotto */
::view-transition-old(tavola-viva), ::view-transition-new(tavola-viva) { animation-duration: 1s; }
::view-transition-group(testata) { animation-duration: .4s; }
@keyframes svanisce { to { opacity: 0; } }
@keyframes appare { from { opacity: 0; } }

/* ---------- Piede ---------- */
.piede {
  position: relative; z-index: 10; background: var(--inchiostro); color: #E9E3D6;
  padding: clamp(4rem, 9vw, 7.5rem) max(6vw, env(safe-area-inset-right)) max(3rem, env(safe-area-inset-bottom)) max(6vw, env(safe-area-inset-left));
  font-size: 1.05rem; line-height: 1.55;
}
.piede-gabbia { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 2.5rem 4rem; max-width: 1200px; }
.piede-marchio { display: flex; align-items: center; gap: .9rem; font-family: var(--f-lap); font-size: .86rem; letter-spacing: .26em; text-transform: uppercase; }
.piede-marchio .marca { font-size: 1.3rem; letter-spacing: 0; }
.piede h2 { font-family: var(--f-lap); font-size: .75rem; letter-spacing: .28em; text-transform: uppercase; color: #B9B2A4; margin-bottom: .5rem; }
.piede a { text-decoration-thickness: 1px; text-underline-offset: .25em; }
.piede-discreto { grid-column: 1 / -1; font-style: italic; font-size: 1.3rem; max-width: 34ch; color: #F3EEE3; }
.piede-fondo {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-top: 1.5rem;
  font-size: .9rem; color: #B9B2A4;
}
.piede-fondo a { color: #E9E3D6; }
/* dove la pagina ha già sedi e riga della discrezione, il piede tiene solo i recapiti */
body[data-scena="indice"] .piede-discreto,
body[data-scena="privata"] .piede-gabbia > :not(.piede-fondo) { display: none; }
body[data-scena="privata"] .piede { padding-top: 2.5rem; }
@media (max-width: 899px) {
  .piede-gabbia { grid-template-columns: 1fr; gap: 2rem; }
  .piede-discreto { font-size: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}