body {
  min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column;
  background: var(--notte); color: var(--avorio);
  font: 400 1rem/1.65 var(--f-testo);
  overflow-x: hidden;
}
a { color: inherit; }

.a-sfondo {
  position: fixed; inset: -4%; z-index: -3;
  background:
    radial-gradient(ellipse 55% 65% at 30% 45%, rgba(9, 13, 12, .25), rgba(9, 13, 12, .94) 72%),
    linear-gradient(90deg, rgba(9, 13, 12, .55), rgba(9, 13, 12, .92) 60%),
    url(img/bronzo-sfondo.jpg) center 55% / cover no-repeat;
  animation: a-respiro 30s ease-in-out infinite alternate;
}
@keyframes a-respiro { from { transform: scale(1); } to { transform: scale(1.06) translateX(1%); } }

.a-ingranaggi {
  position: fixed; z-index: -2; pointer-events: none;
  width: min(980px, 115vw); aspect-ratio: 1;
  right: max(-300px, -22vw); bottom: max(-420px, -38vw);
  opacity: .5;
}
.a-ingranaggi svg { width: 100%; height: 100%; overflow: visible; }
.a-ingranaggi path, .a-ingranaggi circle, .a-ingranaggi line { fill: none; stroke: var(--oro); stroke-width: 1; vector-effect: non-scaling-stroke; stroke-opacity: .55; }
.a-ingranaggi path { fill: rgba(226, 178, 90, .035); }
.a-ingranaggi line { stroke-width: 3; stroke-opacity: .3; vector-effect: none; stroke-linecap: round; }
.a-ingranaggi .sottile { stroke-opacity: .25; }
.a-ingranaggi .r-a, .a-ingranaggi .r-b { transform-origin: 0 0; animation: a-gira 200s linear infinite; }
.a-ingranaggi .r-b { animation-duration: 73.333s; animation-direction: reverse; }
@keyframes a-gira { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------ barra */
.a-barra {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.4rem clamp(1.25rem, 3vw, 2.5rem);
}
.a-marchio {
  display: flex; align-items: center; gap: .7rem; text-decoration: none;
  font: 500 .78rem var(--f-epigrafe); letter-spacing: .2em; text-transform: uppercase;
}
.a-marchio svg { width: 1.7rem; height: 1.7rem; fill: none; stroke: var(--oro); stroke-width: 1.2; transition: transform 1.2s var(--curva); }
.a-marchio:hover svg { transform: rotate(90deg); }
.a-torna { font: 500 .86rem var(--f-ui); color: rgba(246, 241, 231, .7); text-decoration: none; transition: color .25s; }
.a-torna:hover { color: var(--oro-chiaro); }

/* ------------------------------------------------------------ impianto */
.a-impianto {
  flex: 1;
  width: min(1180px, 100% - 3rem); margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(2.5rem, 6vw, 6rem); align-items: center;
  padding: clamp(1rem, 4vh, 3rem) 0 clamp(3rem, 7vh, 5rem);
}

.a-racconto { display: grid; grid-template-columns: auto 1fr; gap: clamp(1.6rem, 3vw, 2.6rem); align-items: start; }
.a-copertina {
  width: clamp(8rem, 13vw, 11.5rem); height: auto; border-radius: 3px;
  box-shadow: 0 2px 0 rgba(255, 255, 255, .06) inset, 0 30px 60px -20px rgba(0, 0, 0, .85), 0 12px 24px -12px rgba(0, 0, 0, .6);
  transform: rotate(-2.5deg); margin-top: .4rem;
  animation: a-entra 1.2s var(--curva) both;
}
.a-occhiello { color: var(--oro); margin: 0 0 1.1rem; display: flex; align-items: center; gap: .9rem; }
.a-occhiello::before { content: ""; width: 2.2rem; height: 1px; background: currentColor; opacity: .7; }
.a-racconto h1 {
  font: 500 clamp(2.3rem, 3.5vw, 3.4rem)/1.04 var(--f-display); letter-spacing: -.012em;
  margin: 0 0 1.4rem;
}
.a-racconto h1 em { font-style: italic; color: var(--oro); }
.a-lancio { color: rgba(246, 241, 231, .74); margin: 0 0 1.6rem; max-width: 34rem; }
.a-vantaggi { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.a-vantaggi li {
  display: flex; align-items: center; gap: .8rem;
  font: 400 .92rem var(--f-ui); color: rgba(246, 241, 231, .78);
}
.a-vantaggi li::before {
  content: ""; flex: none; width: .5rem; height: .5rem; border-radius: 50%;
  border: 1px solid var(--oro); box-shadow: 0 0 0 3px rgba(226, 178, 90, .12);
}

/* ------------------------------------------------------------ scheda */
.a-scheda {
  position: relative;
  padding: clamp(1.8rem, 3.4vw, 2.8rem);
  border-radius: 22px;
  background: linear-gradient(160deg, rgba(28, 37, 34, .82), rgba(12, 17, 16, .9));
  border: 1px solid rgba(226, 178, 90, .2);
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .9), 0 0 0 1px rgba(255, 255, 255, .02) inset;
  -webkit-backdrop-filter: blur(16px) saturate(1.3); backdrop-filter: blur(16px) saturate(1.3);
  animation: a-entra 1.2s .12s var(--curva) both;
}
.a-scheda::before {
  content: ""; position: absolute; inset: 0 2.5rem auto; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240, 207, 142, .7), transparent);
}
@keyframes a-entra { from { opacity: 0; transform: translateY(24px); } }
.a-copertina { animation-name: a-entra-copertina; }
@keyframes a-entra-copertina { from { opacity: 0; transform: translateY(24px) rotate(-2.5deg); } }

.a-scheda h2 { font: 500 clamp(1.8rem, 2.6vw, 2.2rem)/1.1 var(--f-display); margin: 0 0 .5rem; }
.a-istruzione { margin: 0 0 1.8rem; color: rgba(246, 241, 231, .62); font: 400 .92rem/1.5 var(--f-ui); }

.a-campo { margin-bottom: 1.25rem; }
.a-campo label { display: block; margin-bottom: .45rem; font: 500 .8rem var(--f-ui); letter-spacing: .04em; color: rgba(246, 241, 231, .8); }
.a-campo input {
  width: 100%; height: 3.25rem; padding: 0 1.05rem;
  border-radius: 12px; border: 1px solid rgba(246, 241, 231, .16);
  background: rgba(9, 13, 12, .55); color: var(--avorio);
  font: 400 1.02rem var(--f-ui); letter-spacing: .02em;
  transition: border-color .25s, box-shadow .25s, background-color .25s;
}
#isbn { font-variant-numeric: tabular-nums; letter-spacing: .08em; }
.a-campo input::placeholder { color: rgba(246, 241, 231, .3); }
.a-campo input:hover { border-color: rgba(246, 241, 231, .28); }
.a-campo input:focus { outline: none; border-color: var(--oro); box-shadow: 0 0 0 4px rgba(226, 178, 90, .16); background: rgba(9, 13, 12, .75); }
.a-campo input[aria-invalid="true"] { border-color: #e07a5f; box-shadow: 0 0 0 4px rgba(224, 122, 95, .15); }
.a-aiuto { display: flex; align-items: center; gap: .6rem; margin: .55rem 0 0; font: 400 .78rem/1.4 var(--f-ui); color: rgba(246, 241, 231, .5); }
.a-aiuto svg { flex: none; width: 1.9rem; height: 1.15rem; fill: none; stroke: rgba(226, 178, 90, .7); stroke-width: 1.3; }

.a-trappola { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.a-spunta {
  position: relative; display: grid; grid-template-columns: auto 1fr; gap: .8rem; align-items: start;
  margin: 0 0 .95rem; cursor: pointer;
  font: 400 .84rem/1.5 var(--f-ui); color: rgba(246, 241, 231, .72);
}
.a-spunta input { position: absolute; opacity: 0; width: 1.25rem; height: 1.25rem; margin: 0; }
.a-casella {
  width: 1.25rem; height: 1.25rem; margin-top: .08rem; border-radius: 6px;
  border: 1px solid rgba(246, 241, 231, .3); background: rgba(9, 13, 12, .55);
  display: grid; place-items: center; transition: background-color .2s, border-color .2s, box-shadow .2s;
}
.a-casella::after {
  content: ""; width: .62rem; height: .34rem; margin-top: -.12rem;
  border-left: 2px solid var(--notte); border-bottom: 2px solid var(--notte);
  transform: rotate(-45deg) scale(0); transition: transform .25s var(--curva);
}
.a-spunta:hover .a-casella { border-color: var(--oro); }
.a-spunta input:checked + .a-casella { background: var(--oro); border-color: var(--oro); }
.a-spunta input:checked + .a-casella::after { transform: rotate(-45deg) scale(1); }
.a-spunta input:focus-visible + .a-casella { box-shadow: 0 0 0 4px rgba(226, 178, 90, .25); }
.a-spunta input[aria-invalid="true"] + .a-casella { border-color: #e07a5f; box-shadow: 0 0 0 4px rgba(224, 122, 95, .15); }
.a-spunta a { color: var(--oro-chiaro); text-underline-offset: .2em; }
.a-spunta small { display: inline-block; margin-left: .25rem; font: 500 .66rem var(--f-ui); letter-spacing: .08em; text-transform: uppercase; color: rgba(226, 178, 90, .75); }

.a-errore {
  margin: .4rem 0 1rem; padding: .75rem 1rem; border-radius: 10px;
  background: rgba(224, 122, 95, .1); border: 1px solid rgba(224, 122, 95, .35);
  font: 500 .86rem/1.45 var(--f-ui); color: #f3b4a2;
}

.a-invia { width: 100%; min-height: 3.4rem; margin-top: .8rem; font-size: 1rem; }
.a-invia:disabled { cursor: progress; opacity: .8; transform: none; }
.in-corso .a-invia span::after { content: "…"; }
.riuscito .a-invia { background: var(--verderame-chiaro); }

.a-nota { margin: 1.2rem 0 0; font: 400 .74rem/1.5 var(--f-ui); color: rgba(246, 241, 231, .42); text-align: center; }

.a-piede {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1.4rem clamp(1.25rem, 3vw, 2.5rem);
  border-top: 1px solid var(--linea-scura);
  font: 400 .78rem var(--f-ui); color: rgba(246, 241, 231, .45);
}
.a-piede p { margin: 0; }
.a-piede a { text-decoration: none; }
.a-piede a:hover { color: var(--oro-chiaro); }

@media (max-width: 960px) {
  .a-impianto { grid-template-columns: 1fr; max-width: 36rem; }
  .a-racconto { grid-template-columns: 1fr; }
  .a-copertina { display: none; }
}
@media (max-width: 560px) {
  .a-impianto { width: calc(100% - 2rem); }
  .a-vantaggi { display: none; }
  .a-scheda { padding: 1.5rem 1.25rem; border-radius: 18px; }
  .a-marchio span { display: none; }
}

/* ------------------------------------------------------------ informativa */
.legale { width: min(780px, 100% - 3rem); margin: 0 auto; padding: 1rem 0 5rem; }
.legale h1 { font: 500 clamp(2.4rem, 4.4vw, 3.6rem)/1.05 var(--f-display); margin: 0 0 .6rem; }
.legale .legale-data { font: 400 .85rem var(--f-ui); color: rgba(246, 241, 231, .5); margin: 0 0 2.6rem; }
.legale h2 { font: 500 1.55rem/1.2 var(--f-display); color: var(--oro); margin: 2.6rem 0 .8rem; }
.legale p, .legale li { color: rgba(246, 241, 231, .8); }
.legale ul { padding-left: 1.2rem; }
.legale li { margin-bottom: .4rem; }
.legale a { color: var(--oro-chiaro); text-underline-offset: .2em; }
.legale .da-completare { background: rgba(226, 178, 90, .16); color: var(--oro-chiaro); padding: 0 .3em; border-radius: 4px; font-style: normal; }