/* =================================================================
   Federica Colla — architetto
   Foglio di stile unico. Nessuna dipendenza esterna.
   ================================================================= */

/* ---------- 0. Font ----------
   Source Serif 4, servito dal sito stesso: nessuna chiamata a Google,
   nessun ritardo, nessun problema di privacy. Il sito precedente usava
   Constantia, che però esiste solo su Windows: su Mac e telefono
   ripiegava su un carattere senza grazie. Licenza SIL OFL (assets/fonts).
   font-display: swap → il testo si legge subito, poi cambia carattere. */

@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("asset.php?f=f400") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
                 U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
                 U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("asset.php?f=f600") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
                 U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
                 U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Serif 4";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("asset.php?f=fi400") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
                 U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
                 U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, p, figure, dl, dd, ul, address { margin: 0; padding: 0; }
ul { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
address { font-style: normal; }

/* ---------- 2. Token ---------- */
:root {
  /* I serif hanno l'occhio più piccolo dei senza grazie a parità di
     corpo: i valori sono leggermente più alti di prima per compensare.
     Constantia resta come ripiego su Windows se il font non arriva. */
  --font: "Source Serif 4", Constantia, "Iowan Old Style", Georgia,
          "Times New Roman", serif;

  --fs-nav:    0.78125rem;
  --fs-body:   1rem;
  --fs-meta:   0.875rem;
  --fs-title:  clamp(1.0625rem, 0.96rem + 0.5vw, 1.375rem);
  --fs-h1:     clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  --fs-lede:   clamp(1.0625rem, 0.98rem + 0.5vw, 1.3125rem);

  --tracking-nav: 0.13em;
  --tracking-ui:  0.03em;

  /* Colori: quasi-bianco e quasi-nero. Mai #fff/#000 puri. */
  --ink:        #16161a;
  --ink-soft:   #6d6d75;
  --ink-faint:  #a9a9b0;
  --paper:      #fbfbfa;
  --rule:       #e4e4e0;
  --placeholder:#efefec;

  /* Ritmo */
  --gut:    clamp(1.25rem, 4vw, 3rem);
  --gap:    clamp(1.25rem, 2.6vw, 2.5rem);
  --header-h: 5.25rem;
  --max:    88rem;
  --max-narrow: 44rem;

  /* Movimento */
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur:       0.6s;
}

@media (min-width: 700px) { :root { --header-h: 6.5rem; } }

/* ---------- 3. Base ---------- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.65;
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-transform: lowercase;      /* cifra stilistica dello studio */
  overflow-x: hidden;
}

/* Le lettere maiuntscole restano dove servono davvero */
.contact address, .prose, .project__text { text-transform: none; }

::selection { background: var(--ink); color: var(--paper); }

:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

.skip {
  position: absolute; top: 0; left: 0; z-index: 200;
  padding: 0.75rem 1rem; background: var(--ink); color: var(--paper);
  transform: translateY(-110%);
  transition: transform 0.2s var(--ease-soft);
}
.skip:focus { transform: translateY(0); }

/* ---------- 4. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gut);
}
.wrap--narrow { max-width: var(--max-narrow); }

main { min-height: 60vh; }

/* ---------- 5. Header ---------- */
/* Tre colonne: le due laterali si spartiscono lo spazio in parti uguali,
   quindi il marchio al centro è centrato rispetto alla pagina, non
   rispetto a ciò che gli sta accanto. Se fosse un semplice flex, il menu
   a destra lo spingerebbe fuori asse. */
.site-header {
  position: sticky; top: 0; z-index: 100;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  height: var(--header-h);
  padding-inline: var(--gut);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease-soft),
              transform 0.45s var(--ease),
              background 0.4s var(--ease-soft);
}
.site-header.is-stuck { border-bottom-color: var(--rule); }
.site-header.is-hidden { transform: translateY(-100%); }

/* Il marchio è quello di Federica: FEDERICA COLLA, filo, architetto.
   È il PNG originale (trasparente, 500×178), servito a circa un terzo
   della sua misura, quindi resta nitido anche su schermi retina. */
.brand {
  grid-column: 2;
  justify-self: center;
  display: inline-flex; align-items: center;
}
.brand__mark {
  width: auto;
  height: clamp(2.1rem, 4.4vw, 2.9rem);
  transition: opacity 0.35s var(--ease-soft);
}
.brand:hover .brand__mark { opacity: 0.65; }

/* Ripiego se il file logo.png mancasse: stessa composizione, in testo. */
.brand__fallback { display: grid; justify-items: center; gap: 0.28rem; }
.brand__name {
  font-size: var(--fs-nav);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand__rule { width: 2.1rem; height: 1px; background: currentColor; }
.brand__role { font-size: 0.6875rem; letter-spacing: 0.1em; }

.nav { grid-column: 3; justify-self: end; }
.nav__list { display: flex; align-items: center; gap: clamp(1.25rem, 3vw, 2.5rem); }
.nav a {
  position: relative;
  display: inline-block;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  padding-block: 0.35rem;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease-soft);
}
.nav a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.45s var(--ease);
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after {
  transform: scaleX(1); transform-origin: left;
}
.nav__lang { padding-left: 0.25rem; border-left: 1px solid var(--rule); padding-left: clamp(1rem, 2vw, 1.75rem); }

/* Il menu esteso compare solo quando le colonne laterali sono abbastanza
   larghe da contenerlo (~340 px): sotto i 960 px il logo verrebbe spinto
   fuori asse, quindi si passa all'hamburger. */
@media (max-width: 959px) { .nav { display: none; } }

/* Burger */
.burger {
  display: none;
  grid-column: 3;
  justify-self: end;
  width: 2.25rem; height: 2.25rem;
  flex-direction: column; justify-content: center; align-items: flex-end;
  gap: 6px; margin-right: -0.5rem;
}
.burger span {
  display: block; width: 22px; height: 1px; background: var(--ink);
  transition: transform 0.4s var(--ease), opacity 0.25s var(--ease-soft), width 0.4s var(--ease);
}
.burger span:last-child { width: 14px; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child  { transform: translateY(-3.5px) rotate(-45deg); width: 22px; }
@media (max-width: 959px) { .burger { display: flex; } }

/* Pannello menu mobile */
.menu {
  position: fixed; inset: 0; z-index: 99;
  background: var(--paper);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.4s var(--ease-soft), visibility 0.4s;
}
.menu[hidden] { display: grid; }          /* gestito via classi, non via [hidden] */
.menu.is-open { opacity: 1; visibility: visible; }
.menu__inner { text-align: center; }
.menu__inner ul { display: grid; gap: 0.5rem; }
.menu__inner a {
  display: inline-block;
  font-size: clamp(1.75rem, 8vw, 2.75rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  opacity: 0; transform: translateY(1rem);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.menu.is-open .menu__inner a { opacity: 1; transform: none; }
.menu.is-open li:nth-child(1) a { transition-delay: 0.08s; }
.menu.is-open li:nth-child(2) a { transition-delay: 0.14s; }
.menu.is-open li:nth-child(3) a { transition-delay: 0.20s; }
.menu__lang {
  margin-top: 2.5rem;
  font-size: var(--fs-nav) !important;
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--ink-soft);
  transition-delay: 0.26s !important;
}
body.menu-open { overflow: hidden; }

/* ---------- 6. Titoli di pagina ---------- */
.page-title {
  font-size: var(--fs-h1);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(1.5rem, 3vw, 2.25rem);
}
.page-subtitle {
  font-size: var(--fs-meta);
  letter-spacing: var(--tracking-ui);
  color: var(--ink-soft);
  margin-top: -1.5rem;
  padding-bottom: 2rem;
}

/* ---------- 7. Home ---------- */
/* Nessun bordo sotto il menu finché non si scorre: in alto si legge come
   respiro bianco sopra la foto, non come una barra. */
.page-home .site-header { border-bottom-color: transparent; }

/* La foto parte SOTTO il menu, non dietro.
   Ho provato la versione a tutto schermo con il menu sopra la foto: su
   queste immagini non regge. Molte hanno bianco puro proprio dietro le
   voci, e nemmeno velo + sfocatura + colore adattivo superano 3,2:1 di
   contrasto (lo standard minimo è 4,5:1). Per arrivarci servirebbe una
   fascia scura ben visibile, che su un sito di architettura è peggio del
   problema. Così invece il menu è sempre nitido, la foto resta a tutta
   larghezza e lo spazio bianco in alto fa da respiro. */
.hero {
  position: relative;
  height: calc(100svh - var(--header-h));
  min-height: 26rem;
}
.hero__stage { position: absolute; inset: 0; overflow: hidden; background: var(--placeholder); }

/* Velo inferiore: i trattini dello slideshow e il pulsante "progetti"
   stanno sopra la foto, e lì il velo basta perché il bordo basso delle
   immagini è quasi sempre più scuro. */
.hero::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: clamp(5rem, 14vh, 9rem);
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to top,
    rgba(10, 10, 14, 0.38) 0%,
    rgba(10, 10, 14, 0.14) 55%,
    rgba(10, 10, 14, 0) 100%);
}

.hero__slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1.6s var(--ease-soft);
  will-change: opacity;
}
.hero__slide.is-active { opacity: 1; }
.hero__slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 9s linear;
}
.hero__slide.is-active img { transform: scale(1); }

.hero__empty {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: clamp(1.5rem, 6vw, 3rem);
  color: var(--ink-faint);
}

/* Trattini e pulsante hanno un supporto proprio: la sola sfumatura non
   basta sulle foto con il fondo chiaro. */
.hero__dots {
  position: absolute; left: var(--gut); bottom: clamp(1.5rem, 4vw, 2.5rem);
  display: flex; align-items: center; gap: 0.5rem; z-index: 2;
  padding: 0.7rem 0.85rem;
  background: rgba(20, 20, 24, 0.42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.hero__dots button {
  width: 1.6rem; height: 2px;
  background: rgba(255, 255, 255, 0.5);
  transition: background 0.4s var(--ease-soft);
}
.hero__dots button[aria-selected="true"] { background: #fff; }

.hero__enter {
  position: absolute; right: var(--gut); bottom: clamp(1.5rem, 4vw, 2.5rem);
  z-index: 2;
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1.1rem;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: #fff;
  background: rgba(20, 20, 24, 0.46);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.35s var(--ease-soft);
}
.hero__enter svg { transition: transform 0.45s var(--ease); }
.hero__enter:hover { background: rgba(20, 20, 24, 0.68); }
.hero__enter:hover svg { transform: translateX(4px); }

/* Sulla home il menu sta sulla carta come in tutto il resto del sito:
   stesso nero, stessa leggibilità, nessun caso limite. */
.page-home .site-header { z-index: 3; }

/* ---------- 8. Elenco progetti ----------
   Uno sotto l'altro, immagine a sinistra e testo a destra, separati da un
   filo orizzontale: la struttura del sito precedente, che Federica
   preferisce. Le copertine non vengono ritagliate — mantengono le loro
   proporzioni, così le fotografie non subiscono tagli decisi dal layout. */

.projects { padding-bottom: clamp(3rem, 8vw, 6rem); }

.projects__item + .projects__item { border-top: 1px solid var(--rule); }

.entry {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
  padding-block: clamp(2rem, 4.5vw, 3.25rem);
}

.entry__media {
  position: relative;
  overflow: hidden;
  background: var(--placeholder);
}
.entry__media img {
  width: 100%; height: auto;
  transform: scale(1.001);
  transition: transform 1.2s var(--ease);
  will-change: transform;
}
.entry:hover .entry__media img,
.entry:focus-visible .entry__media img { transform: scale(1.03); }

/* velo appena percettibile che si scioglie al passaggio del mouse */
.entry__media::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--paper);
  opacity: 0.07;
  transition: opacity 0.7s var(--ease-soft);
  pointer-events: none;
}
.entry:hover .entry__media::after { opacity: 0; }

.entry__text { padding-top: 0.15rem; }

.entry__title {
  font-size: var(--fs-title);
  font-weight: 400;
  line-height: 1.34;
  letter-spacing: -0.008em;
  max-width: 30ch;
}
.entry__meta {
  margin-top: 0.5rem;
  font-size: var(--fs-meta);
  color: var(--ink-soft);
  letter-spacing: var(--tracking-ui);
}

/* freccia discreta: compare solo al passaggio del mouse */
.entry__go {
  display: inline-flex;
  margin-top: clamp(0.9rem, 2vw, 1.4rem);
  color: var(--ink-faint);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.45s var(--ease-soft), transform 0.5s var(--ease),
              color 0.45s var(--ease-soft);
}
.entry:hover .entry__go,
.entry:focus-visible .entry__go {
  opacity: 1; transform: none; color: var(--ink);
}

/* Sotto gli 800 px il testo passa sotto l'immagine */
@media (max-width: 799px) {
  .entry {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-block: clamp(1.75rem, 6vw, 2.5rem);
  }
  .entry__go { opacity: 1; transform: none; }
}

/* Puntatore senza hover (touch): la freccia resta sempre visibile */
@media (hover: none) {
  .entry__go { opacity: 1; transform: none; }
}

.empty { padding-block: 4rem; color: var(--ink-soft); }

/* ---------- 9. Singolo progetto ---------- */
.backlink {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease-soft);
}
.backlink svg { transition: transform 0.4s var(--ease); }
.backlink:hover { color: var(--ink); }
.backlink:hover svg { transform: translateX(-4px); }

.project__head { padding-bottom: clamp(2.5rem, 6vw, 4.5rem); }

.project__title {
  max-width: 24ch;
  margin-top: clamp(1.75rem, 4vw, 3rem);
  font-size: var(--fs-h1);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.018em;
}
.project__meta {
  margin-top: 0.75rem;
  font-size: var(--fs-meta);
  letter-spacing: var(--tracking-ui);
  color: var(--ink-soft);
}
.project__text {
  max-width: var(--max-narrow);
  margin-top: 2rem;
}
.project__text p + p { margin-top: 1em; }

.project__credits {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem;
  align-items: baseline;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: var(--fs-meta);
}
.project__credits dt {
  color: var(--ink-faint);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  font-size: var(--fs-nav);
  min-width: 4rem;
}
.project__credits dd { display: flex; flex-direction: column; color: var(--ink-soft); }

.project__gallery {
  display: grid;
  gap: clamp(0.75rem, 2.5vw, 2rem);
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.shot {
  aspect-ratio: var(--ar, 3 / 2);
  overflow: hidden;
  background: var(--placeholder);
}
.shot img {
  width: 100%; height: 100%;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform 1.2s var(--ease);
}
.shot img:hover { transform: scale(1.02); }

/* Le immagini verticali stanno affiancate a due a due su schermi larghi */
@media (min-width: 900px) {
  .project__gallery { grid-template-columns: repeat(2, 1fr); }
  .shot { grid-column: span 2; }
  .shot.is-portrait { grid-column: span 1; }
}

.project__pager {
  display: flex; justify-content: space-between; gap: 2rem;
  margin-top: clamp(4rem, 10vw, 8rem);
  padding-block: clamp(2rem, 5vw, 3rem);
  border-top: 1px solid var(--rule);
}
.pager { max-width: 22rem; }
.pager--next { text-align: right; margin-left: auto; }
.pager__label {
  display: block;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--ink-faint);
}
.pager__title {
  display: block;
  margin-top: 0.4rem;
  font-size: var(--fs-title);
  line-height: 1.3;
  transition: opacity 0.3s var(--ease-soft);
}
.pager:hover .pager__title { opacity: 0.55; }

/* ---------- 10. Profilo / contatti ---------- */
.portrait {
  aspect-ratio: var(--ar, 4 / 5);
  overflow: hidden;
  background: var(--placeholder);
  margin-bottom: clamp(2rem, 5vw, 3rem);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }

.prose { font-size: var(--fs-lede); line-height: 1.55; letter-spacing: -0.005em; }
.prose p + p { margin-top: 1.4em; }

.cta { padding-block: clamp(3rem, 8vw, 6rem); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.35s var(--ease-soft);
}
.link-arrow svg { transition: transform 0.45s var(--ease); }
.link-arrow:hover { border-bottom-color: var(--ink); }
.link-arrow:hover svg { transform: translateX(5px); }

.contact { display: grid; gap: clamp(2rem, 5vw, 3.25rem); padding-bottom: clamp(4rem, 10vw, 8rem); }
.contact__block { display: grid; gap: 0.6rem; }
.contact__label {
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--ink-faint);
}
.contact address, .contact__list { font-size: var(--fs-lede); line-height: 1.5; }
.contact__list { display: grid; gap: 0.35rem; }

.underlined {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.45s var(--ease);
  padding-bottom: 2px;
}
.underlined:hover { background-size: 100% 1px; }

.notfound { min-height: 50vh; }

/* ---------- 11. Footer ---------- */
.site-footer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
  padding: clamp(2rem, 5vw, 3rem) var(--gut);
  border-top: 1px solid var(--rule);
  font-size: var(--fs-meta);
  color: var(--ink-soft);
  letter-spacing: var(--tracking-ui);
}
.site-footer a { transition: color 0.3s var(--ease-soft); }
.site-footer a:hover { color: var(--ink); }
.site-footer__col { display: flex; gap: 1.25rem; }

@media (min-width: 700px) {
  .site-footer { grid-template-columns: repeat(3, 1fr); align-items: center; }
  .site-footer__col--end { justify-content: flex-end; }
  .site-footer__col:nth-child(2) { justify-content: center; }
}

.page-home .site-footer { display: none; }

/* ---------- 12. Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--paper) 97%, var(--ink));
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s var(--ease-soft), visibility 0.35s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox[hidden] { display: grid; }
.lightbox__stage {
  width: 100%; height: 100%;
  display: grid; place-items: center;
  padding: clamp(2.5rem, 6vw, 4.5rem);
}
.lightbox__stage img {
  max-width: 100%; max-height: 100%;
  width: auto; height: auto;
  object-fit: contain;
  opacity: 0; transform: scale(0.985);
  transition: opacity 0.4s var(--ease-soft), transform 0.5s var(--ease);
}
.lightbox.is-open .lightbox__stage img { opacity: 1; transform: none; }

.lightbox__close {
  position: absolute; top: 0.75rem; right: 1.25rem;
  font-size: 2rem; line-height: 1; color: var(--ink-soft);
  padding: 0.5rem; transition: color 0.3s var(--ease-soft);
}
.lightbox__close:hover { color: var(--ink); }

.lightbox__nav {
  position: absolute; top: 0; bottom: 0; width: 22%;
  opacity: 0; transition: opacity 0.3s var(--ease-soft);
}
.lightbox__nav--prev { left: 0;  cursor: w-resize; }
.lightbox__nav--next { right: 0; cursor: e-resize; }
.lightbox__nav::before {
  content: ""; position: absolute; top: 50%; width: 12px; height: 12px;
  border-top: 1px solid var(--ink); border-left: 1px solid var(--ink);
}
.lightbox__nav--prev::before { left: 1.75rem;  transform: translateY(-50%) rotate(-45deg); }
.lightbox__nav--next::before { right: 1.75rem; transform: translateY(-50%) rotate(135deg); }
.lightbox:hover .lightbox__nav { opacity: 0.7; }
.lightbox__nav:hover { opacity: 1 !important; }

.lightbox__counter {
  position: absolute; bottom: 1.25rem; left: 0; right: 0;
  text-align: center;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  color: var(--ink-faint);
}

@media (max-width: 699px) { .lightbox__nav { width: 30%; opacity: 0.5; } }

/* ---------- 13. Animazioni di ingresso ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease-soft), transform 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 60ms);
}
.reveal.is-in { opacity: 1; transform: none; }

/* Prima dell'esecuzione del JS non nascondiamo nulla (no-JS friendly) */
html:not(.js) .reveal { opacity: 1; transform: none; }

/* Rivelazione dell'immagine tramite maschera che si ritira */
.reveal .entry__media img,
.reveal.shot img,
.reveal.portrait img {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 1s var(--ease), transform 1.2s var(--ease);
  transition-delay: calc(var(--i, 0) * 60ms + 60ms);
}
.reveal.is-in .entry__media img,
.reveal.is-in.shot img,
.reveal.is-in.portrait img { clip-path: inset(0 0 0 0); }
html:not(.js) .reveal img { clip-path: none; }

/* ---------- 14. Transizioni di pagina ---------- */
@view-transition { navigation: auto; }

::view-transition-old(root) { animation: fade-out 0.28s var(--ease-soft) both; }
::view-transition-new(root) { animation: fade-in  0.42s var(--ease-soft) 0.06s both; }

@keyframes fade-out { to   { opacity: 0; } }
@keyframes fade-in  { from { opacity: 0; } }

/* ---------- 15. Preferenze utente ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .reveal img { clip-path: none !important; }
  .hero__slide img { transform: none !important; }
}

/* ---------- 16. Stampa ---------- */
@media print {
  .site-header, .menu, .lightbox, .hero__dots, .hero__enter,
  .project__pager, .site-footer { display: none !important; }
  body { background: #fff; color: #000; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .reveal img { clip-path: none !important; }
}