/* Pagina /app: installazione dell'app. Usa variabili, font e pulsanti di styles.css. */

.app-page {
  min-height: 100dvh;
  background:
    radial-gradient(60% 40% at 50% 0%, rgba(255, 90, 31, 0.1), transparent 70%),
    radial-gradient(50% 35% at 85% 18%, rgba(34, 211, 238, 0.08), transparent 70%),
    var(--c-bg);
}
.app-shell {
  width: min(100% - 2 * var(--gutter), 560px);
  margin-inline: auto;
  padding: calc(env(safe-area-inset-top) + var(--s-4)) 0 calc(env(safe-area-inset-bottom) + var(--s-7));
}

.app-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  min-height: 48px;
}
.app-back {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  min-height: 44px;
  padding: 0 var(--s-3) 0 var(--s-2);
  margin-left: calc(var(--s-2) * -1);
  border-radius: var(--r-pill);
  color: rgba(242, 244, 247, 0.82);
  font-weight: 600;
  font-size: var(--fs-sm);
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}
.app-back svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.app-back:hover { background: rgba(242, 244, 247, 0.06); color: var(--c-text); }
.app-back:active { background: rgba(242, 244, 247, 0.1); }
.app-top__logo { width: 132px; height: auto; }

/* ---- presentazione ---- */
.app-hero { text-align: center; padding-top: var(--s-7); }
.app-tile {
  position: relative;
  width: 112px;
  height: 112px;
  margin: 0 auto var(--s-6);
}
.app-tile img {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 26px;
  border: 1px solid var(--c-line-strong);
  box-shadow: 0 18px 40px -16px rgba(255, 90, 31, 0.55), 0 8px 24px -10px rgba(0, 0, 0, 0.7);
}
.app-tile__glow {
  position: absolute;
  inset: -60%;
  border-radius: 50%;
  background:
    radial-gradient(closest-side, rgba(255, 90, 31, 0.35), transparent 70%),
    radial-gradient(closest-side at 70% 30%, rgba(34, 211, 238, 0.22), transparent 70%);
  pointer-events: none;
}
.app-title {
  font-family: var(--f-display);
  font-size: clamp(1.9rem, 1.4rem + 2.6vw, 2.7rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.app-lead {
  margin: var(--s-4) auto 0;
  max-width: 44ch;
  color: rgba(242, 244, 247, 0.74);
}
.app-perks {
  display: grid;
  gap: var(--s-2);
  justify-content: center;
  margin-top: var(--s-5);
  text-align: left;
  font-size: var(--fs-sm);
  font-weight: 600;
}
.app-perks[hidden] { display: none; }
.app-perks li { display: flex; align-items: center; gap: var(--s-3); }
.app-perks__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px var(--c-cyan-soft);
}

/* ---- pannelli ---- */
main[data-state="loading"] .app-panel { display: none; }
.app-panel {
  margin-top: var(--s-7);
  padding: var(--s-5);
  display: grid;
  gap: var(--s-4);
}
.app-panel[hidden] { display: none; }
.app-panel p { color: rgba(242, 244, 247, 0.78); }
.app-panel__title {
  font-family: var(--f-display);
  font-size: var(--fs-h3);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--c-text);
}
.app-panel--done { text-align: center; justify-items: center; }
.app-btn { --btn-h: 56px; font-size: var(--fs-md); }
.app-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.app-btn:disabled { opacity: 0.6; cursor: progress; }
.app-note { color: var(--c-muted) !important; font-size: var(--fs-sm); }
.app-note:empty { display: none; }

/* passaggi numerati: qui sono davvero una sequenza */
.app-steps { display: grid; gap: var(--s-5); counter-reset: step; }
.app-steps[hidden] { display: none; }
.app-step {
  position: relative;
  padding-left: 48px;
  counter-increment: step;
}
.app-step::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-plasma);
  color: var(--c-bg);
  font-family: var(--f-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  box-shadow: 0 6px 16px -6px rgba(255, 90, 31, 0.6);
}
.app-step h3 { font-size: var(--fs-md); font-weight: 750; line-height: 1.35; color: var(--c-text); padding-top: 3px; }
.app-step p { margin-top: var(--s-1); font-size: var(--fs-sm); }
.app-key {
  display: inline-block;
  padding: 0 8px;
  border-radius: 6px;
  border: 1px solid var(--c-line-strong);
  background: rgba(242, 244, 247, 0.06);
  color: var(--c-text);
  font-weight: 700;
  white-space: nowrap;
}
.app-shot {
  margin-top: var(--s-3);
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-elevated);
}
.app-shot svg { width: 100%; height: auto; }

.app-warn {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-3);
  padding: var(--s-4);
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 90, 31, 0.45);
  background: var(--c-plasma-soft);
}
.app-warn[hidden] { display: none; }
.app-warn > svg { width: 24px; height: 24px; fill: none; stroke: var(--c-plasma); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.app-warn strong { display: block; color: var(--c-text); }
.app-warn p { margin: var(--s-1) 0 var(--s-3); font-size: var(--fs-sm); }
.app-warn .btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.app-check {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--c-cyan-soft);
  border: 1px solid rgba(34, 211, 238, 0.55);
  box-shadow: 0 0 30px -6px rgba(34, 211, 238, 0.5);
}
.app-check svg { width: 30px; height: 30px; fill: none; stroke: var(--c-cyan); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }

.app-qr {
  width: min(100%, 280px);
  padding: var(--s-3);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: 0 20px 50px -24px rgba(34, 211, 238, 0.45);
}
.app-qr img { width: 100%; height: auto; image-rendering: pixelated; }
.app-url { font-family: var(--f-display); font-size: var(--fs-sm); color: var(--c-text); letter-spacing: 0.01em; overflow-wrap: anywhere; }

.app-foot { margin-top: var(--s-7); text-align: center; color: var(--c-muted); font-size: var(--fs-sm); }
.app-foot + .app-foot { margin-top: var(--s-1); }
.app-foot--demo { font-size: var(--fs-xs); }
.app-foot a { color: var(--c-text); font-weight: 700; text-decoration: none; transition: color 0.2s; }
.app-foot a:hover { color: var(--c-cyan); }