/* Base comune ai 3 stili: reset, struttura, menu mobile, lightbox. I colori/font sono nei file di stile. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--sfondo); color: var(--testo); font-family: var(--font-testo); line-height: 1.6; text-rendering: optimizeLegibility; }
img, video { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, figure, blockquote, ul { margin: 0; }
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; letter-spacing: inherit; text-transform: inherit; line-height: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

.skip { position: absolute; left: -9999px; top: 0; z-index: 100; padding: .6rem 1rem; background: var(--accento); color: #fff; }
.skip:focus { left: 1rem; top: 1rem; }
:focus-visible { outline: 2px solid var(--accento); outline-offset: 3px; }

/* Contenitore */
.sez, .testata, .piede { --gutter: clamp(16px, 4vw, 48px); padding-inline: var(--gutter); }
.sez { max-width: var(--larghezza, 1240px); margin-inline: auto; padding-block: clamp(56px, 9vw, 120px); }

/* Testata + menu */
.testata { position: relative; z-index: 20; display: flex; align-items: center; gap: 1.5rem; }
.marchio { text-decoration: none; }
.nav ul { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1.25rem; }
.nav a, .nav button { text-decoration: none; white-space: nowrap; }
.nav__sub { position: relative; }
.nav__sub > button::after { content: ""; display: inline-block; width: .4em; height: .4em; margin-left: .45em; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: translateY(-.2em) rotate(45deg); }
.nav__sub > ul { display: none; position: absolute; top: calc(100% + .5rem); left: -1rem; min-width: 11rem; flex-direction: column; gap: 0; padding: .5rem 0; background: var(--sfondo-menu, var(--sfondo)); box-shadow: 0 12px 40px rgb(0 0 0 / .18); }
.nav__sub > ul a { display: block; padding: .5rem 1rem; }
.nav__sub > button[aria-expanded="true"] + ul { display: flex; }
@media (hover: hover) { .nav__sub:hover > ul { display: flex; } }

.menu-toggle { display: none; width: 44px; height: 44px; margin-left: auto; position: relative; }
.menu-toggle span { position: absolute; left: 10px; right: 10px; height: 2px; background: currentColor; transition: transform .25s, opacity .2s; }
.menu-toggle span:nth-child(1) { top: 15px; } .menu-toggle span:nth-child(2) { top: 21px; } .menu-toggle span:nth-child(3) { top: 27px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1100px) {
  .menu-toggle { display: block; flex: none; }
  .testata__marchio { min-width: 0; white-space: normal !important; }
  /* menu aperto: la testata copre le voci che scorrono sotto il logo (padding-top della nav = altezza testata, da sito.js) */
  body.menu-aperto .testata::before { content: ""; position: absolute; inset: 0; z-index: 0; background: inherit; }
  .testata__marchio, .menu-toggle { position: relative; z-index: 1; }
  .nav { position: fixed; inset: 0; z-index: -1; display: flex; align-items: flex-start; padding: 96px 32px 32px; background: var(--sfondo-menu, var(--sfondo)); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; overflow-y: auto; }
  .nav.is-aperto { opacity: 1; visibility: visible; }
  .nav > ul { flex-direction: column; align-items: flex-start; margin-block: auto; gap: .4rem; font-size: 1.5rem; }
  .nav__sub > ul { position: static; display: flex; align-items: flex-start; box-shadow: none; background: none; padding: 0 0 0 1rem; font-size: 1.1rem; }
  .nav__sub > ul a { padding: .2rem 0; }
  body.menu-aperto { overflow: hidden; }
}

/* Gallerie */
.galleria { display: grid; gap: var(--gap, 10px); margin-top: clamp(24px, 4vw, 40px); }
.galleria--4 { grid-template-columns: repeat(4, 1fr); }
.galleria--mosaico { grid-template-columns: repeat(3, 1fr); }
.galleria--striscia { grid-auto-flow: column; grid-auto-columns: minmax(200px, 1fr); overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.galleria--striscia > * { scroll-snap-align: start; }
.foto { display: block; overflow: hidden; background: var(--sfondo-foto, #ddd); }
.galleria .foto img { width: 100%; height: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .6s cubic-bezier(.2,.7,.2,1), filter .3s; }
.galleria .foto:hover img { transform: scale(1.04); }
.foto--grande img { width: 100%; height: auto; }
@media (max-width: 760px) {
  .galleria--4, .galleria--mosaico { grid-template-columns: repeat(2, 1fr); }
  .galleria--striscia { grid-auto-columns: 70%; }
}

/* Colonne testo + media */
.sez__colonne { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 72px); align-items: center; }
.sez__colonne--inverse .sez__media { order: -1; }
@media (max-width: 860px) { .sez__colonne { grid-template-columns: 1fr; } .sez__colonne--inverse .sez__media { order: 0; } }

.azioni { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.bottone { display: inline-flex; align-items: center; gap: .6em; text-decoration: none; }

/* Everest */
.everest__corpo { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(24px, 5vw, 64px); align-items: start; margin-top: clamp(24px, 4vw, 48px); }
.trailer video { width: 100%; aspect-ratio: 16 / 9; background: #000; object-fit: cover; }
.evidenza { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
.evidenza__card { display: flex; flex-direction: column; height: 100%; text-decoration: none; }
.evidenza__etichetta { display: block; }
.evidenza__riga { display: block; }
@media (max-width: 860px) { .everest__corpo { grid-template-columns: 1fr; } .evidenza { grid-template-columns: repeat(2, 1fr); } }

/* Everest info */
.sez--everest-info { display: grid; gap: 28px; }
.info__media { display: grid; grid-template-columns: .6fr 1fr 1fr; gap: 12px; align-items: stretch; }
.info__media img { width: 100%; height: 100%; object-fit: cover; }
.info__logo { display: flex; align-items: center; justify-content: center; background: #fff; }
.info__logo img { object-fit: contain; max-height: 220px; }
@media (max-width: 760px) { .info__media { grid-template-columns: 1fr 1fr; } .info__logo { grid-column: span 2; } }

/* Duo */
.sez--duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 3vw, 32px); }
.scheda { display: grid; grid-template-rows: auto 1fr; }
.scheda__foto img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
@media (max-width: 760px) { .sez--duo { grid-template-columns: 1fr; } }

/* Altre conferenze */
.conferenze { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 2.5vw, 32px); margin-top: clamp(24px, 4vw, 48px); }
.conferenza { display: flex; flex-direction: column; gap: 14px; }
.conferenza__locandina img { width: 100%; aspect-ratio: 7 / 10; object-fit: cover; }
.conferenza__titolo span { display: block; }
.conferenza__testo a { text-decoration: none; }
.conferenza__testo p + p { margin-top: .4em; }
@media (max-width: 1000px) { .conferenze { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .conferenze { grid-template-columns: 1fr; } }

/* Le più belle */
.piubelle { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.piubelle__card { position: relative; display: block; overflow: hidden; text-decoration: none; }
.piubelle__card img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; transition: transform .6s cubic-bezier(.2,.7,.2,1); }
.piubelle__card:hover img { transform: scale(1.05); }
.piubelle__card b { position: absolute; inset: auto 0 0 0; padding: 48px 16px 16px; color: #fff; background: linear-gradient(transparent, rgb(0 0 0 / .78)); }
.archivio { margin-top: clamp(32px, 5vw, 56px); text-align: center; }
@media (max-width: 760px) { .piubelle { grid-template-columns: repeat(2, 1fr); } }

/* Piede */
.piede { display: flex; justify-content: space-between; gap: 16px; padding-block: 32px; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 4vmin; background: rgb(8 10 12 / .94); cursor: zoom-out; }
.lightbox[hidden] { display: none; }
.lightbox img { max-height: 92vh; width: auto; box-shadow: 0 20px 80px rgb(0 0 0 / .6); cursor: default; }
.lightbox__chiudi { position: absolute; top: 12px; right: 16px; width: 48px; height: 48px; font-size: 36px; line-height: 1; color: #fff; }

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