/* FR-Solution Audio & Lighting Rental — atmosfera da evento serale: palco scuro, fasci di luce, arancio del marchio */
@font-face { font-family: "Barlow SC"; src: url("fonts/BarlowSemiCondensed-SemiBold.ttf") format("truetype"); font-weight: 600 800; font-display: swap; }
@font-face { font-family: "Barlow SC"; src: url("fonts/BarlowSemiCondensed-Medium.ttf") format("truetype"); font-weight: 400 500; font-display: swap; }

:root {
  --notte: #07060b;
  --notte-2: #110e19;
  --notte-3: #1a1625;
  --testo: #f4f1f8;
  --tenue: #a9a3b8;
  --arancio: #ff7a1a;
  --fucsia: #ff2e88;
  --viola: #7b5cff;
  --ciano: #2ee6ff;
  --bordo: rgba(255, 255, 255, .1);
  --raggio: 18px;
  --titoli: "Barlow SC", "Arial Narrow", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--notte); color: var(--testo); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--titoli); font-weight: 700; letter-spacing: .01em; line-height: 1.02; margin: 0; }
.occhiello { margin: 0 0 10px; font-family: var(--titoli); font-weight: 600; text-transform: uppercase; letter-spacing: .22em; font-size: 13px; color: var(--arancio); }
.sotto { color: var(--tenue); font-size: 18px; max-width: 620px; }

/* ---------------------------------------------------------------- pulsanti */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 52px; padding: 0 26px; border-radius: 999px; font: 700 16px var(--titoli);
  letter-spacing: .06em; text-transform: uppercase; text-decoration: none; cursor: pointer; border: 0; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-pieno { color: #1a0b02; background: linear-gradient(100deg, #ffb347, var(--arancio) 45%, var(--fucsia)); box-shadow: 0 10px 34px rgba(255, 90, 40, .45); }
.btn-pieno:hover { box-shadow: 0 14px 44px rgba(255, 60, 90, .6); }
.btn-vuoto { color: var(--testo); background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .25); backdrop-filter: blur(8px); }
.btn-vuoto:hover { background: rgba(255, 255, 255, .14); }
.largo { width: 100%; }
.btn-mini { background: rgba(255, 255, 255, .06); color: var(--testo); border: 1px solid var(--bordo); border-radius: 999px; padding: 8px 16px; font: 600 14px var(--titoli);
  letter-spacing: .05em; cursor: pointer; text-decoration: none; }
.btn-mini.caldo { color: var(--arancio); border-color: rgba(255, 122, 26, .45); }

/* ---------------------------------------------------------------- hero */
.hero { position: relative; min-height: 100svh; display: grid; grid-template-rows: auto 1fr auto; overflow: hidden; isolation: isolate; }
.hero-foto { position: absolute; inset: 0; z-index: -3; background: url("img/palco.webp") center 35% / cover no-repeat; filter: saturate(1.25) contrast(1.05); transform: scale(1.04); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2;
  background: linear-gradient(180deg, rgba(7, 6, 11, .55) 0%, rgba(7, 6, 11, .35) 35%, rgba(7, 6, 11, .85) 78%, var(--notte) 100%),
              radial-gradient(60% 50% at 20% 100%, rgba(255, 46, 136, .35), transparent 70%), radial-gradient(50% 45% at 85% 90%, rgba(123, 92, 255, .4), transparent 70%); }
.fasci { position: absolute; inset: -10% -10% 30%; z-index: -1; pointer-events: none; mix-blend-mode: screen; }
.fasci span { position: absolute; top: -10%; width: 34vmax; height: 120%; transform-origin: 50% 0; filter: blur(6px); opacity: .55;
  background: conic-gradient(from 180deg at 50% 0, transparent 172deg, var(--c) 180deg, transparent 188deg); animation: fascio var(--d) ease-in-out infinite alternate; }
.fasci span:nth-child(1) { left: 2%; --c: rgba(255, 122, 26, .9); --d: 7s; --a: -18deg; --b: 14deg; }
.fasci span:nth-child(2) { left: 26%; --c: rgba(255, 46, 136, .8); --d: 9s; --a: 16deg; --b: -12deg; }
.fasci span:nth-child(3) { left: 50%; --c: rgba(123, 92, 255, .85); --d: 8s; --a: -10deg; --b: 18deg; }
.fasci span:nth-child(4) { left: 72%; --c: rgba(46, 230, 255, .6); --d: 10s; --a: 20deg; --b: -16deg; }
@keyframes fascio { from { transform: rotate(var(--a)); } to { transform: rotate(var(--b)); } }
.barra { display: flex; justify-content: space-between; align-items: center; padding: max(18px, env(safe-area-inset-top)) clamp(16px, 5vw, 56px) 0; }
.logo { height: clamp(46px, 6vw, 70px); width: auto; filter: drop-shadow(0 4px 18px rgba(0, 0, 0, .55)); }
.logo-piede { height: 56px; }
.barra .btn { height: 44px; padding: 0 20px; font-size: 14px; }
.hero-testo { align-self: center; padding: 40px clamp(16px, 7vw, 96px); max-width: 1000px; }
.hero h1 { font-size: clamp(48px, 9vw, 112px); text-transform: uppercase; text-shadow: 0 6px 40px rgba(0, 0, 0, .55); }
.hero h1 em { font-style: normal; background: linear-gradient(95deg, #ffd27a, var(--arancio) 35%, var(--fucsia) 70%, var(--viola));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sotto { font-size: clamp(17px, 2vw, 21px); color: #ddd6ea; margin: 20px 0 30px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.eventi { border-block: 1px solid var(--bordo); background: rgba(7, 6, 11, .55); backdrop-filter: blur(6px); overflow: hidden; }
.nastro { display: flex; width: max-content; animation: nastro 38s linear infinite; }
.nastro span { font: 700 clamp(18px, 2.4vw, 26px) var(--titoli); text-transform: uppercase; letter-spacing: .12em; padding: 16px 28px; white-space: nowrap; color: #e9e4f2; }
.nastro span::after { content: "✦"; margin-left: 56px; color: var(--arancio); }
@keyframes nastro { to { transform: translateX(-50%); } }

/* ---------------------------------------------------------------- sezioni */
.sezione { padding: clamp(64px, 10vw, 120px) clamp(16px, 5vw, 56px); max-width: 1320px; margin: 0 auto; }
.intesta { text-align: center; margin-bottom: 42px; display: grid; justify-items: center; }
.intesta h2 { font-size: clamp(38px, 6vw, 68px); text-transform: uppercase; }
.intesta .sotto { margin: 14px 0 0; }

/* ---------------------------------------------------------------- sfoglia (libro) */
.sfoglia { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; }
.libro { --r: .8; position: relative; display: grid; grid-template-columns: 1fr 1fr; width: min(100%, calc((100svh - 220px) * var(--r) * 2), 1180px); margin: 0 auto;
  perspective: 2600px; outline: none; transition: transform .6s cubic-bezier(.3, .7, .2, 1); filter: drop-shadow(0 30px 60px rgba(0, 0, 0, .6)); }
.libro::after { content: ""; position: absolute; left: 50%; top: 2%; bottom: 2%; width: 40px; transform: translateX(-50%); pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, .28) 45%, rgba(0, 0, 0, .38) 50%, rgba(0, 0, 0, .28) 55%, transparent); }
.libro.copertina { transform: translateX(-25%); }
.libro.copertina::after, .libro.solo::after { display: none; }
.pag { aspect-ratio: var(--r); background: #ece8e1; overflow: hidden; cursor: zoom-in; }
.pag img { width: 100%; height: 100%; object-fit: cover; }
.pag.sx { border-radius: 10px 2px 2px 10px; }
.pag.dx { border-radius: 2px 10px 10px 2px; }
.pag.vuota { visibility: hidden; }
.foglio { position: absolute; top: 0; width: 50%; height: 100%; transform-style: preserve-3d; z-index: 3; pointer-events: none; }
.foglio.avanti { left: 50%; transform-origin: left center; animation: giraAvanti .75s cubic-bezier(.45, .05, .3, 1) forwards; }
.foglio.indietro { left: 0; transform-origin: right center; animation: giraIndietro .75s cubic-bezier(.45, .05, .3, 1) forwards; }
.foglio > div { position: absolute; inset: 0; backface-visibility: hidden; overflow: hidden; background: #ece8e1; }
.foglio > div img { width: 100%; height: 100%; object-fit: cover; }
.foglio .retro { transform: rotateY(180deg); }
.foglio > div::after { content: ""; position: absolute; inset: 0; animation: ombra .75s ease-in-out; opacity: 0; background: linear-gradient(90deg, rgba(0, 0, 0, .35), transparent 60%); }
@keyframes giraAvanti { to { transform: rotateY(-180deg); } }
@keyframes giraIndietro { to { transform: rotateY(180deg); } }
@keyframes ombra { 50% { opacity: 1; } }
.libro.singola { grid-template-columns: 1fr; width: min(100%, calc((100svh - 200px) * var(--r)), 560px); }
.libro.singola .pag.sx { display: none; }
.libro.singola .pag.dx { border-radius: 10px; }
.libro.singola::after { display: none; }
.libro.singola .foglio { left: 0; width: 100%; }
.freccia { width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--bordo); background: rgba(255, 255, 255, .06); color: var(--testo); font-size: 34px; line-height: 1;
  cursor: pointer; transition: background .2s, transform .2s; }
.freccia:hover:not(:disabled) { background: var(--arancio); color: #1a0b02; transform: scale(1.06); }
.freccia:disabled { opacity: .25; cursor: default; }
.comandi { display: flex; justify-content: center; align-items: center; gap: 12px; margin: 26px 0 18px; flex-wrap: wrap; }
#contatore { font: 600 15px var(--titoli); letter-spacing: .08em; color: var(--tenue); min-width: 150px; text-align: center; }
.miniature { display: flex; gap: 10px; overflow-x: auto; padding: 6px 4px 14px; scrollbar-width: thin; scroll-snap-type: x proximity; }
.miniature button { flex: none; width: 74px; padding: 0; border: 2px solid transparent; border-radius: 6px; background: none; cursor: pointer; opacity: .55; transition: opacity .2s, border-color .2s;
  scroll-snap-align: center; }
.miniature button.on { opacity: 1; border-color: var(--arancio); }
.miniature button:hover { opacity: .9; }
.miniature img { border-radius: 4px; aspect-ratio: .8; object-fit: cover; }
.sfoglia:fullscreen { background: var(--notte); padding: 24px; }
.sfoglia:fullscreen .libro { width: min(96vw, calc((100vh - 60px) * var(--r) * 2)); }
.sfoglia:fullscreen .libro.singola { width: min(96vw, calc((100vh - 60px) * var(--r))); }
.lente { position: fixed; inset: 0; z-index: 50; background: rgba(5, 4, 8, .94); display: grid; place-items: center; padding: 20px; overflow: auto; }
.lente[hidden] { display: none; }
.lente img { max-width: min(1300px, 96vw); width: 100%; height: auto; border-radius: 8px; cursor: zoom-out; }
.lente button { position: fixed; top: 16px; right: 16px; width: 48px; height: 48px; border-radius: 50%; border: 0; background: var(--arancio); font-size: 28px; cursor: pointer; }

/* ---------------------------------------------------------------- servizi */
.servizi .carte { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.carta { position: relative; padding: 30px 26px; border-radius: var(--raggio); background: linear-gradient(160deg, var(--notte-3), var(--notte-2)); border: 1px solid var(--bordo); overflow: hidden; }
.carta::before { content: ""; position: absolute; inset: -40% -40% auto auto; width: 220px; height: 220px; border-radius: 50%; filter: blur(50px); opacity: .5; background: var(--g); }
.c1 { --g: var(--arancio); } .c2 { --g: var(--viola); } .c3 { --g: var(--fucsia); } .c4 { --g: var(--ciano); }
.carta .ico { font-size: 34px; }
.carta h3 { font-size: 30px; text-transform: uppercase; margin: 14px 0 8px; }
.carta p { color: var(--tenue); margin: 0; position: relative; }

/* ---------------------------------------------------------------- modulo */
.modulo-box { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 64px); align-items: center; padding: clamp(26px, 5vw, 56px);
  border-radius: 28px; border: 1px solid var(--bordo); position: relative; overflow: hidden;
  background: radial-gradient(70% 90% at 0% 0%, rgba(255, 122, 26, .22), transparent 60%), radial-gradient(60% 80% at 100% 100%, rgba(123, 92, 255, .25), transparent 60%), var(--notte-2); }
.modulo-testo h2 { font-size: clamp(36px, 5vw, 58px); text-transform: uppercase; margin-bottom: 14px; }
.modulo-testo p { color: #cfc8dc; }
.punti { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; }
.punti li::before { content: "✦"; color: var(--arancio); margin-right: 10px; }
.modulo { display: grid; gap: 14px; padding: 26px; border-radius: 20px; background: rgba(7, 6, 11, .6); border: 1px solid var(--bordo); backdrop-filter: blur(10px); }
.modulo label { display: grid; gap: 6px; font: 600 14px var(--titoli); letter-spacing: .05em; color: #d8d2e4; }
.modulo input, .modulo select { height: 50px; border-radius: 12px; border: 1px solid rgba(255, 255, 255, .16); background: rgba(255, 255, 255, .05); color: var(--testo);
  padding: 0 14px; font: 16px system-ui, sans-serif; color-scheme: dark; }
.modulo input:focus, .modulo select:focus { outline: 2px solid var(--arancio); outline-offset: 1px; }
.modulo .due { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modulo .spunta { grid-template-columns: auto 1fr; align-items: start; gap: 12px; font: 14px/1.45 system-ui, sans-serif; letter-spacing: 0; color: var(--tenue); }
.modulo .spunta input { width: 22px; height: 22px; margin-top: 1px; accent-color: var(--arancio); }
.trappola { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.esito { margin: 0; min-height: 22px; font-size: 15px; }
.esito.ok { color: #7ef0b0; }
.esito.ko { color: #ff8a9a; }

/* ---------------------------------------------------------------- piede e privacy */
.piede { border-top: 1px solid var(--bordo); padding: 40px clamp(16px, 5vw, 56px) max(40px, env(safe-area-inset-bottom)); display: grid; justify-items: center; gap: 14px; text-align: center; }
.contatti { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.contatti a { text-decoration: none; font: 600 17px var(--titoli); letter-spacing: .04em; }
.contatti a:hover { color: var(--arancio); }
.legale { color: #7d768c; font-size: 13px; margin: 0; }
.dialogo { max-width: 560px; border: 1px solid var(--bordo); border-radius: 20px; background: var(--notte-2); color: var(--testo); padding: 28px; }
.dialogo::backdrop { background: rgba(0, 0, 0, .7); backdrop-filter: blur(4px); }
.dialogo h3 { font-size: 28px; text-transform: uppercase; margin-bottom: 10px; }
.dialogo p { color: #cfc8dc; font-size: 15px; }

@media (max-width: 860px) {
  .modulo-box { grid-template-columns: 1fr; }
  .sfoglia { grid-template-columns: 1fr; }
  .freccia { position: absolute; z-index: 4; top: 50%; transform: translateY(-50%); width: 46px; height: 46px; font-size: 28px; background: rgba(7, 6, 11, .7); }
  .freccia:hover:not(:disabled) { transform: translateY(-50%); }
  .freccia.sx { left: 4px; } .freccia.dx { right: 4px; }
}
@media (max-width: 480px) { .modulo .due { grid-template-columns: 1fr; } .cta .btn { flex: 1 1 100%; } }
@media (prefers-reduced-motion: reduce) {
  .fasci span, .nastro { animation: none; }
  .foglio.avanti, .foglio.indietro { animation-duration: .01s; }
  html { scroll-behavior: auto; }
}