/* Ondine — foglio di stile unico del sito statico.
   Colori del marchio: blu del logo, verde di Ebook Cover, giallo di Storytelling. */
:root {
  --blue: #3a5fb0;
  --blue-dark: #253b66;
  --blue-soft: #eaf0fb;
  --green: #7fbf1f;
  --green-soft: #eef7e1;
  --yellow: #f2c200;
  --yellow-soft: #fff7d6;
  --ink: #1d2433;
  --muted: #5b6475;
  --line: #e2e6ee;
  --bg: #ffffff;
  --bg-alt: #f6f8fc;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(29, 36, 51, .08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; font: 17px/1.65 var(--font); color: var(--ink); background: var(--bg); }
img { max-width: 100%; height: auto; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.2; color: var(--blue-dark); }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); margin: 0 0 .5em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 .6em; }
h3 { font-size: 1.2rem; margin: 0 0 .4em; }

.wrap { width: min(1140px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.section { padding: 64px 0; }
.alt-bg { background: var(--bg-alt); }
.center { text-align: center; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 46em; }
.center .lead { margin-inline: auto; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: #fff; padding: 8px 12px; }

/* Pulsanti */
.button {
  display: inline-block; padding: 13px 26px; border-radius: 999px; background: var(--blue);
  color: #fff; font-weight: 600; text-decoration: none; border: 2px solid var(--blue);
  transition: transform .15s ease, background .15s ease;
}
.button:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-1px); }
.button.alt { background: transparent; color: var(--blue); }
.button.alt:hover { background: var(--blue-soft); }
.button.green { background: var(--green); border-color: var(--green); color: #1f3300; }
.button.yellow { background: var(--yellow); border-color: var(--yellow); color: #3b2f00; }
.button.small { padding: 8px 18px; font-size: .95rem; }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.center .buttons { justify-content: center; }

/* Barra in alto */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; }
.brand img { display: block; width: 170px; height: auto; }
.menu { display: flex; align-items: center; gap: 24px; }
.menu ul { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; }
.menu ul a { color: var(--ink); text-decoration: none; font-weight: 500; }
.menu ul a:hover, .menu ul a[aria-current] { color: var(--blue); }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; font: inherit; }

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .menu { display: none; position: absolute; left: 0; right: 0; top: 72px; background: #fff; border-bottom: 1px solid var(--line);
          flex-direction: column; align-items: stretch; padding: 16px; gap: 16px; }
  .menu.open { display: flex; }
  .menu ul { flex-direction: column; gap: 4px; }
  .menu ul a { display: block; padding: 8px 4px; }
  .menu .button { text-align: center; }
}

/* Apertura della home e delle pagine prodotto */
.hero { padding: 72px 0; background: linear-gradient(160deg, var(--blue-soft), #fff 60%); }
.hero.green { background: linear-gradient(160deg, var(--green-soft), #fff 60%); }
.hero.yellow { background: linear-gradient(160deg, var(--yellow-soft), #fff 60%); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.hero .badge { display: inline-block; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; font-size: .9rem; color: var(--muted); margin-bottom: 18px; }
.hero img { filter: drop-shadow(0 20px 30px rgba(29, 36, 51, .15)); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } .hero { padding: 48px 0; } }

.page-head { padding: 56px 0 8px; background: linear-gradient(160deg, var(--blue-soft), #fff 70%); }
.page-head p { color: var(--muted); font-size: 1.15rem; margin: 0; }

/* Due strumenti */
.tools { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.tool { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px; }
.tool img { width: 150px; }
.tool p { color: var(--muted); margin: 0 0 8px; flex: 1; }
.tool.green { border-top: 6px solid var(--green); }
.tool.yellow { border-top: 6px solid var(--yellow); }
@media (max-width: 760px) { .tools { grid-template-columns: 1fr; } }

/* Caratteristiche */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; list-style: none; padding: 0; margin: 32px 0 0; }
.features li { background: #fff; border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); }
.features .icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; background: var(--blue-soft); color: var(--blue); margin-bottom: 14px; }
.features .icon svg { width: 24px; height: 24px; }
.features p { margin: 0; color: var(--muted); }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } }

/* Testo e immagine affiancati */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split.reverse > :first-child { order: 2; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split.reverse > :first-child { order: 0; } }

.stores { display: flex; flex-wrap: wrap; gap: 28px; justify-content: center; align-items: center; list-style: none; padding: 0; margin: 24px 0 0; }
.stores img { width: 84px; }

/* Galleria dei modelli */
.templates { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 18px; list-style: none; padding: 0; margin: 28px 0 0; }
.templates-storytelling { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.templates a { display: block; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 14px rgba(29, 36, 51, .12); transition: transform .15s ease; }
.templates a:hover { transform: translateY(-3px); }
.templates img { display: block; width: 100%; }

/* Schede di articoli e tutorial */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; list-style: none; padding: 0; margin: 0; }
.card a { display: flex; flex-direction: column; height: 100%; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; transition: box-shadow .15s ease, transform .15s ease; }
.card a:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card img, .card-placeholder { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: var(--blue-soft); display: block; }
.card-body { display: flex; flex-direction: column; gap: 8px; padding: 20px; }
.card-meta { font-size: .85rem; color: var(--muted); }
.card strong { color: var(--blue-dark); font-size: 1.1rem; line-height: 1.3; }
.card-text { color: var(--muted); font-size: .95rem; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }

/* Articolo */
.crumbs { color: var(--muted); font-size: .95rem; }
.prose { font-size: 1.08rem; }
.prose img { border-radius: 6px; }
.prose img[data-align="left"] { float: left; margin: 6px 24px 12px 0; max-width: 45%; }
.prose img[data-align="right"] { float: right; margin: 6px 0 12px 24px; max-width: 45%; }
.prose img[data-align="center"] { display: block; margin: 16px auto; }
.prose::after { content: ""; display: block; clear: both; }
.prose blockquote { margin: 1.4em 0; padding: 4px 20px; border-left: 4px solid var(--blue); color: var(--muted); }
.prose table { border-collapse: collapse; width: 100%; margin: 1em 0; }
.prose td { border: 1px solid var(--line); padding: 8px 10px; vertical-align: top; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin: 1.4em 0; align-items: start; }
.post-nav { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.post-nav .next { margin-left: auto; text-align: right; }

/* Video: si carica solo al clic */
.video { position: relative; aspect-ratio: 16 / 9; margin: 1.4em 0; border-radius: var(--radius); overflow: hidden; background: var(--blue-dark); }
.video button { position: absolute; inset: 0; width: 100%; border: 0; cursor: pointer; color: #fff; font: 600 1.05rem var(--font);
                background: radial-gradient(circle at center, #3a5fb0, #1b2b4d); display: grid; place-items: center; align-content: center; gap: 14px; }
.video button span { display: grid; place-items: center; width: 74px; height: 74px; border-radius: 50%; background: rgba(255, 255, 255, .95); color: var(--blue); font-size: 1.8rem; padding-left: 6px; }
.video small { display: block; font-weight: 400; opacity: .8; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* FAQ */
.faq details { border: 1px solid var(--line); border-radius: 10px; padding: 0 20px; margin-bottom: 12px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 600; padding: 16px 0; color: var(--blue-dark); }
.faq details[open] summary { border-bottom: 1px solid var(--line); margin-bottom: 12px; }

/* Invito finale e contatti */
.cta { background: var(--blue-dark); color: #fff; padding: 56px 0; text-align: center; }
.cta h2 { color: #fff; }
.cta p { color: #d8e1f3; }
.cta .buttons { justify-content: center; }
.cta .button { background: #fff; color: var(--blue-dark); border-color: #fff; }
.cta .button.alt { background: transparent; color: #fff; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.contact .mail { font-size: 1.4rem; font-weight: 600; }
@media (max-width: 760px) { .contact { grid-template-columns: 1fr; } }

/* Piè di pagina */
.footer { background: #0d2035; color: #c8d2e4; padding: 48px 0 0; font-size: .95rem; }
.footer a { color: #fff; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer h2 { color: #fff; font-size: 1rem; margin: 0 0 10px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 6px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.footer-grid img { filter: brightness(0) invert(1); opacity: .9; }
.footer-legal { border-top: 1px solid rgba(255, 255, 255, .12); margin-top: 32px; padding: 18px 0; font-size: .85rem; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-grid > :first-child { grid-column: 1 / -1; } }

/* Pagina non trovata */
.notfound { min-height: 50vh; display: grid; place-items: center; text-align: center; }