:root {
  --blu: #0f4c81;
  --blu-scuro: #0f3556;
  --ambra: #f59e0b;
  --carta: #f4f7fb;
  --testo: #1d2a3a;
  --grigio: #5b6b7f;
  --linea: #d0dbe8;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --carta: #0b1a2b;
    --testo: #e6edf5;
    --grigio: #9fb0c4;
    --linea: #22374f;
  }
}

:root[data-theme="dark"] {
  --carta: #0b1a2b;
  --testo: #e6edf5;
  --grigio: #9fb0c4;
  --linea: #22374f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--carta);
  color: var(--testo);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blu); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

header.top {
  background: var(--blu-scuro);
  color: #fff;
  padding: 14px 0;
}
header.top .wrap { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
header.top .marchio { font-weight: 800; font-size: 1.25rem; letter-spacing: .04em; color: #fff; text-decoration: none; }
header.top nav a { color: #cfe0f2; margin-left: 16px; text-decoration: none; font-size: .95rem; }
header.top nav a:hover { color: #fff; }

.hero { padding: 64px 0 40px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; color: var(--blu); font-weight: 700; margin: 0 0 8px; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.12; margin: 0 0 16px; color: var(--testo); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.1rem); margin: 0 0 12px; color: var(--testo); }
h3 { font-size: 1.1rem; margin: 0 0 8px; }
.lead { font-size: 1.15rem; color: var(--grigio); max-width: 680px; }

.bottone {
  display: inline-block;
  background: var(--blu);
  color: #fff;
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  margin: 8px 10px 8px 0;
}
.bottone.secondario { background: transparent; color: var(--blu); border: 2px solid var(--blu); }
.bottone.ambra { background: var(--ambra); color: #1d2a3a; }

section { padding: 48px 0; border-top: 1px solid var(--linea); }

.griglia { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: #fff;
  border: 1px solid var(--linea);
  border-radius: 12px;
  padding: 20px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .card { background: #112338; }
}
:root[data-theme="dark"] .card { background: #112338; }

.perchi .card { border-left: 4px solid var(--ambra); }

.galleria { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.slot {
  border: 2px dashed var(--linea);
  border-radius: 12px;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
  color: var(--grigio);
  font-size: .9rem;
}
figure { margin: 0; }
figcaption { font-size: .9rem; color: var(--grigio); margin-top: 6px; }

.demo {
  background: var(--blu);
  color: #fff;
  border-radius: 14px;
  padding: 32px;
  border-top: none;
}
.demo h2, .demo p { color: #fff; }
.demo .bottone { background: var(--ambra); color: #1d2a3a; }

footer { padding: 32px 0; color: var(--grigio); font-size: .9rem; border-top: 1px solid var(--linea); }
footer a { color: var(--grigio); }

@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  header.top nav a { margin-left: 10px; }
}

/* ---------- manuale: layout con indice fisso ---------- */
.topbar { background: var(--blu-scuro); color: #fff; }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
.topbar .marchio { font-weight: 800; font-size: 1.2rem; color: #fff; text-decoration: none; letter-spacing: .04em; }
.topbar nav a { color: #cfe0f2; margin-left: 16px; text-decoration: none; font-size: .95rem; }
.topbar nav a:hover, .topbar nav a[aria-current="page"] { color: #fff; text-decoration: underline; }
.topbar nav a.evidenza { background: var(--ambra); color: #1d2a3a; padding: 6px 12px; border-radius: 6px; font-weight: 700; }

.pagina-manuale { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 36px; max-width: 1180px; margin: 0 auto; padding: 32px 16px 16px; }
.indice { position: sticky; top: 16px; align-self: start; font-size: .95rem; }
.indice h2 { font-size: 1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--grigio); margin: 0 0 10px; }
.indice ol { list-style: none; padding: 0; margin: 0; }
.indice li a { display: block; padding: 7px 10px; border-radius: 6px; text-decoration: none; color: var(--testo); }
.indice li a:hover { background: var(--linea); }
.indice li a[aria-current="page"] { background: var(--blu); color: #fff; font-weight: 700; }
.indice .numero { color: var(--grigio); margin-right: 6px; }
.indice a[aria-current="page"] .numero { color: #cfe0f2; }

.corpo { min-width: 0; }
.corpo h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
.corpo h2 { margin-top: 36px; border-bottom: 1px solid var(--linea); padding-bottom: 6px; }
.corpo h3 { margin-top: 22px; font-size: 1.1rem; }
.briciole { font-size: .85rem; color: var(--grigio); margin-bottom: 8px; }
.briciole a { color: var(--grigio); }

ol.passi, ul.elenco { padding-left: 22px; }
ol.passi li, ul.elenco li { margin-bottom: 8px; }
ol.passi { counter-reset: passo; list-style: none; padding-left: 0; }
ol.passi > li { counter-increment: passo; position: relative; padding-left: 40px; }
ol.passi > li::before { content: counter(passo); position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--blu); color: #fff; font-weight: 700; text-align: center; line-height: 28px; font-size: .9rem; }

.nota { border-left: 4px solid var(--blu); background: #fff; border-radius: 8px; padding: 12px 16px; margin: 18px 0; }
.nota.attenzione { border-left-color: var(--ambra); }
.nota.limiti { border-left-color: #b45309; }
.nota strong { display: block; margin-bottom: 4px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .nota { background: #112338; } }
:root[data-theme="dark"] .nota { background: #112338; }

figure.shot { margin: 22px 0; }
figure.shot img { border-radius: 10px; border: 1px solid var(--linea); box-shadow: 0 2px 10px rgba(0,0,0,.08); }
figure.shot .slot { aspect-ratio: 16 / 9; }

.prossima-precedente { display: flex; justify-content: space-between; gap: 12px; margin: 40px 0 8px; flex-wrap: wrap; }
.prossima-precedente a { flex: 1 1 240px; border: 1px solid var(--linea); border-radius: 10px; padding: 12px 16px; text-decoration: none; color: var(--testo); background: #fff; }
.prossima-precedente a span { display: block; font-size: .8rem; color: var(--grigio); }
.prossima-precedente a.succ { text-align: right; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .prossima-precedente a { background: #112338; } }
:root[data-theme="dark"] .prossima-precedente a { background: #112338; }

.menu-mobile { display: none; }
.pagina-semplice { max-width: 880px; margin: 0 auto; padding: 36px 16px; }

@media (max-width: 860px) {
  .pagina-manuale { grid-template-columns: 1fr; gap: 12px; padding-top: 16px; }
  .indice { position: static; }
  .indice details { background: #fff; border: 1px solid var(--linea); border-radius: 10px; padding: 10px 14px; }
  .indice details summary { font-weight: 700; cursor: pointer; }
  .indice ol { margin-top: 8px; }
  @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .indice details { background: #112338; } }
  :root[data-theme="dark"] .indice details { background: #112338; }
  .topbar nav a { margin-left: 10px; font-size: .88rem; }
}

/* logo: farfalla e nome sulla stessa riga */
.marchio { display: inline-flex; align-items: center; gap: 10px; }
.marchio img { display: inline-block; width: 34px; height: 34px; }

/* testata: il pulsante della demo non va a capo a metà parola; farfalla un po' più grande */
.topbar nav a { white-space: nowrap; }
.topbar nav a.evidenza { display: inline-block; }
.marchio img { width: 40px; height: 40px; }

/* BEEP: schermo del telefono dentro una cornice */
.telefono { width: min(300px, 80%); margin: 22px auto; background: #111; border-radius: 38px; padding: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.telefono img { border-radius: 26px; width: 100%; height: auto; display: block; }
.telefoni { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; align-items: flex-start; }
.telefoni figure { flex: 0 1 260px; margin: 0; }
.telefoni .telefono { width: 100%; margin: 14px 0; }

/* Dimmi: la barra in evidenza nella home */
.dimmi-home { background: #fff; border-top: none; }
.dimmi-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 28px; align-items: center; margin: 20px 0; }
.dimmi-grid figure.shot img { border-radius: 12px; }
@media (max-width: 760px) { .dimmi-grid { grid-template-columns: 1fr; } }