/* ==========================================================================
   Angelo Pozzi Architetto – foglio di stile
   Colori, margini e carattere si cambiano qui sotto, nel blocco :root
   ========================================================================== */

:root {
  --carta: #ffffff;        /* sfondo delle pagine */
  --inchiostro: #15191d;   /* testi principali, pulsanti */
  --grafite: #5b636b;      /* testi secondari */
  --filo: #dde0e3;         /* linee sottili */
  --campo: #eceeef;        /* colore dietro le foto mentre si caricano */
  --margine: clamp(20px, 4vw, 56px);
  --larghezza: 1360px;
  --font: "Avenir Next", "Helvetica Neue", "Segoe UI", Helvetica, Arial, sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  font-weight: 300;
  font-size: 18px;
  line-height: 1.65;
  color: var(--inchiostro);
  background: var(--carta);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
main { flex: 1 0 auto; }

.solo-lettori {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.salta {
  position: absolute; left: 12px; top: -64px; z-index: 100;
  background: var(--inchiostro); color: var(--carta); padding: 10px 16px; text-decoration: none;
}
.salta:focus { top: 12px; }

:focus-visible { outline: 2px solid var(--inchiostro); outline-offset: 4px; }

/* ----- Testata ---------------------------------------------------------- */

.testata {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--filo);
}

.testata-interno {
  max-width: var(--larghezza);
  margin: 0 auto;
  padding: 0 var(--margine);
  height: 68px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}

.titolo-sito {
  font-size: 17px; font-weight: 500; letter-spacing: .01em;
  text-decoration: none; color: var(--inchiostro);
  white-space: nowrap;
}

.menu { display: flex; gap: clamp(20px, 3vw, 44px); }

.menu a {
  position: relative;
  font-size: 15px; font-weight: 400;
  text-decoration: none; color: var(--grafite);
  padding: 6px 0;
  transition: color .2s;
}
.menu a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--inchiostro);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .25s ease;
}
.menu a:hover, .menu a[aria-current="page"] { color: var(--inchiostro); }
.menu a:hover::after, .menu a[aria-current="page"]::after { transform: scaleX(1); }

.bottone-menu {
  display: none;
  width: 44px; height: 44px; margin-right: -10px;
  background: none; border: 0; cursor: pointer; color: var(--inchiostro);
}
.bottone-menu span, .bottone-menu span::before, .bottone-menu span::after {
  content: ""; display: block; width: 22px; height: 1.5px; background: currentColor;
  margin: 0 auto; position: relative; transition: transform .25s, background-color .25s;
}
.bottone-menu span::before { position: absolute; top: -7px; left: 0; }
.bottone-menu span::after { position: absolute; top: 7px; left: 0; }
.bottone-menu[aria-expanded="true"] span { background: transparent; }
.bottone-menu[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.bottone-menu[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

/* ----- Struttura delle pagine ------------------------------------------ */

.contenitore {
  max-width: var(--larghezza); margin: 0 auto;
  padding: clamp(28px, 4vw, 56px) var(--margine) clamp(56px, 7vw, 104px);
}

/* ----- Home ------------------------------------------------------------- */

.hero { position: relative; height: clamp(320px, 72vh, 760px); overflow: hidden; background: var(--campo); }
.hero .diapo { position: absolute; inset: 0; opacity: 0; transition: opacity 1.6s ease; }
.hero .diapo.attiva { opacity: 1; }
.hero .diapo img { width: 100%; height: 100%; object-fit: cover; }

.frase {
  max-width: var(--larghezza); margin: 0 auto;
  padding: clamp(40px, 7vw, 96px) var(--margine) clamp(64px, 9vw, 128px);
}
.frase .testo-frase { max-width: 880px; }
.frase p { margin: 0 0 1.2em; }
.frase p:first-child {
  font-size: clamp(24px, 3.1vw, 40px); line-height: 1.25; letter-spacing: -.015em;
}
.frase p + p { font-size: 18px; color: var(--grafite); max-width: 54ch; }
.vai {
  display: inline-block; margin-top: 12px;
  font-size: 16px; font-weight: 400; text-decoration: none;
  border-bottom: 1px solid var(--inchiostro); padding-bottom: 3px;
  transition: opacity .2s;
}
.vai:hover { opacity: .6; }

/* ----- Progetti --------------------------------------------------------- */

.griglia-progetti {
  display: grid; gap: clamp(28px, 3.4vw, 48px) clamp(16px, 2vw, 28px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  list-style: none; margin: 0; padding: 0;
}

.scheda {
  display: block; width: 100%; padding: 0; border: 0; background: none;
  color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.scheda .foto { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--campo); }
.scheda .foto img { width: 100%; height: 100%; object-fit: cover; }
.scheda .didascalia {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding-top: 14px;
}
.scheda .dida-testo { display: block; min-width: 0; }
.scheda .didascalia strong { display: block; font-weight: 500; font-size: 16px; line-height: 1.35; }
.scheda .didascalia em { display: block; font-style: normal; font-size: 15px; color: var(--grafite); line-height: 1.4; }
.scheda .didascalia small { flex: none; font-size: 13px; color: var(--grafite); }
.scheda:hover .didascalia strong { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }

/* ----- Suggestioni ------------------------------------------------------ */

.mosaico { column-count: 3; column-gap: clamp(10px, 1.6vw, 20px); }
.mosaico button {
  display: block; width: 100%; margin: 0 0 clamp(10px, 1.6vw, 20px); padding: 0; border: 0;
  background: var(--campo); cursor: zoom-in; break-inside: avoid;
}
.mosaico img { width: 100%; transition: opacity .25s; }
.mosaico button:hover img { opacity: .88; }

/* ----- Studio ----------------------------------------------------------- */

.studio {
  display: grid; grid-template-columns: minmax(220px, 360px) minmax(0, 620px);
  gap: clamp(32px, 7vw, 112px); align-items: start;
}
.studio figure { margin: 0; }
.studio .testo p { margin: 0 0 1.2em; font-size: clamp(19px, 1.7vw, 22px); line-height: 1.6; }

/* ----- Contatti --------------------------------------------------------- */

.contatti {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 380px);
  gap: clamp(32px, 7vw, 112px); align-items: start;
}
.contatti figure { margin: 0; }
.dati-contatto { margin: 0 0 48px; font-style: normal; font-size: 20px; line-height: 1.6; }
.dati-contatto .nome { font-weight: 500; }
.dati-contatto dl { margin: 20px 0 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 20px; font-size: 18px; }
.dati-contatto dt { color: var(--grafite); font-size: 15px; padding-top: 2px; }
.dati-contatto dd { margin: 0; overflow-wrap: anywhere; }
.dati-contatto a { text-decoration: none; border-bottom: 1px solid var(--filo); transition: border-color .2s; }
.dati-contatto a:hover { border-color: var(--inchiostro); }

.modulo { max-width: 520px; }
.modulo label { display: block; font-size: 14px; color: var(--grafite); margin: 0 0 2px; }
.modulo .riga { margin-bottom: 22px; }
.modulo input[type="text"], .modulo input[type="email"], .modulo textarea {
  width: 100%; padding: 10px 0; font: inherit; font-size: 18px; color: var(--inchiostro);
  background: transparent; border: 0; border-bottom: 1px solid #9aa1a8; border-radius: 0;
  transition: border-color .2s;
}
.modulo textarea { min-height: 120px; resize: vertical; }
.modulo input:focus, .modulo textarea:focus { outline: none; border-bottom: 1px solid var(--inchiostro); box-shadow: 0 1px 0 var(--inchiostro); }
.modulo .consenso { display: flex; gap: 12px; align-items: flex-start; }
.modulo .consenso label { font-size: 14px; line-height: 1.5; margin: 0; }
.modulo .consenso input { margin-top: 4px; accent-color: var(--inchiostro); }
.modulo .nascosto { position: absolute; left: -9999px; }
.modulo button[type="submit"] {
  font: inherit; font-size: 16px; font-weight: 400; cursor: pointer;
  padding: 14px 40px; color: var(--carta); background: var(--inchiostro);
  border: 1px solid var(--inchiostro); border-radius: 0;
  transition: background-color .2s, color .2s;
}
.modulo button[type="submit"]:hover { background: var(--carta); color: var(--inchiostro); }

/* ----- Testi legali e pagine di servizio -------------------------------- */

.testo-legale { max-width: 780px; font-size: 16px; line-height: 1.7; }
.testo-legale h1 { font-weight: 400; font-size: clamp(28px, 3.4vw, 40px); line-height: 1.2; letter-spacing: -.015em; margin: 0 0 1em; }
.testo-legale h2 { font-weight: 500; font-size: 18px; margin: 2.2em 0 .5em; }
.testo-legale p, .testo-legale li { margin: 0 0 .9em; }
.testo-legale a { text-underline-offset: 3px; }

/* ----- Piede ------------------------------------------------------------ */

.piede { border-top: 1px solid var(--filo); color: var(--grafite); font-size: 14px; }
.piede-interno {
  max-width: var(--larghezza); margin: 0 auto;
  padding: 26px var(--margine) 30px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 32px;
}
.piede p { margin: 0; }
.piede-link { display: flex; gap: 24px; }
.piede a { text-decoration: none; }
.piede a:hover { color: var(--inchiostro); text-decoration: underline; text-underline-offset: 4px; }

/* ----- Galleria a schermo intero --------------------------------------- */

.lb {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(14, 16, 18, .97);
  display: grid; grid-template-columns: 72px 1fr 72px; grid-template-rows: 1fr auto;
  align-items: center; color: #f2f2f2;
  animation: lb-entra .25s ease;
}
@keyframes lb-entra { from { opacity: 0; } to { opacity: 1; } }

.lb figure { grid-column: 2; grid-row: 1; margin: 0; height: 100%; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 24px 0 0; }
.lb figure img { max-width: 100%; max-height: calc(100vh - 116px); width: auto; height: auto; object-fit: contain; transition: opacity .2s; }
.lb .lb-testo { grid-column: 1 / -1; grid-row: 2; text-align: center; padding: 12px 80px 24px; font-size: 14px; font-weight: 300; min-height: 64px; }
.lb .lb-testo strong { font-weight: 500; }
.lb .lb-testo span { color: #a9adb1; margin-left: .8em; }

.lb button {
  background: none; border: 0; color: #fff; cursor: pointer; opacity: .6;
  font-family: var(--font); font-weight: 200; font-size: 46px; line-height: 1;
  height: 100%; width: 100%; max-height: 240px;
  transition: opacity .2s;
}
.lb button:hover, .lb button:focus-visible { opacity: 1; }
.lb :focus-visible { outline-color: #fff; outline-offset: -6px; }
.lb .lb-prec { grid-column: 1; grid-row: 1; }
.lb .lb-succ { grid-column: 3; grid-row: 1; }
.lb .lb-chiudi { position: absolute; right: 12px; top: 10px; width: 52px; height: 52px; font-size: 40px; z-index: 2; }
.lb[data-singola="1"] .lb-prec, .lb[data-singola="1"] .lb-succ { visibility: hidden; }

/* ----- Home su computer: tutto in una sola schermata, senza scorrere ------- */

@media (min-width: 761px) and (min-height: 560px) {
  body[data-pagina="home"] { height: 100vh; height: 100svh; overflow: hidden; }
  body[data-pagina="home"] main { display: flex; flex-direction: column; min-height: 0; }
  body[data-pagina="home"] .hero { flex: 1 1 0; height: auto; min-height: 0; }
  body[data-pagina="home"] .frase { width: 100%; padding-top: clamp(20px, 3.2vh, 36px); padding-bottom: clamp(18px, 3vh, 32px); }
  body[data-pagina="home"] .frase p { margin-bottom: .6em; }
  body[data-pagina="home"] .frase p:first-child { font-size: clamp(22px, 2.6vw, 34px); }
  body[data-pagina="home"] .frase p + p { font-size: 17px; }
  body[data-pagina="home"] .vai { margin-top: 4px; }
  body[data-pagina="home"] .frase .testo-frase { max-width: none; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); column-gap: clamp(32px, 5vw, 80px); align-items: end; }
  body[data-pagina="home"] .frase p:first-child { grid-column: 1; grid-row: 1 / span 3; margin: 0; }
  body[data-pagina="home"] .frase p + p, body[data-pagina="home"] .vai { grid-column: 2; justify-self: start; }
  body[data-pagina="home"] .frase p + p { margin-bottom: .5em; }
  body[data-pagina="home"] .piede-interno { padding-top: 14px; padding-bottom: 16px; }
}

/* ----- Schermi medi e piccoli ------------------------------------------ */

@media (max-width: 1000px) {
  .griglia-progetti { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mosaico { column-count: 2; }
}

@media (max-width: 760px) {
  body { font-size: 17px; }

  /* senza sfocatura: altrimenti il menu a tutto schermo resterebbe chiuso dentro la testata */
  .testata { background: var(--carta); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .testata-interno { height: 60px; }
  .titolo-sito { font-size: 16px; }
  .bottone-menu { display: block; }

  .menu {
    display: none; flex-direction: column; gap: 0;
    position: fixed; top: 60px; left: 0; right: 0; bottom: 0;
    padding: 24px var(--margine);
    background: var(--carta);
    overflow-y: auto;
  }
  .menu.aperto { display: flex; }
  .menu a { font-size: 30px; font-weight: 300; color: var(--inchiostro); padding: 12px 0; }
  .menu a::after { display: none; }
  .menu a[aria-current="page"] { font-weight: 500; }

  .griglia-progetti { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .mosaico { column-count: 1; }
  .studio, .contatti { grid-template-columns: minmax(0, 1fr); }
  .studio figure, .contatti figure { max-width: 420px; }
  .contatti figure { order: -1; }
  .dati-contatto { font-size: 19px; }

  .lb { grid-template-columns: 44px 1fr 44px; }
  .lb .lb-testo { padding: 10px 16px 20px; }
  .lb button { font-size: 36px; }
}

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

@media print {
  .testata, .piede, .lb { display: none; }
}