/* Pratikum — sito vetrina. Un foglio solo, nessuna risorsa esterna, caratteri del sistema.
   I colori riprendono quelli del prodotto (frontend/src/stile.css di Pratikum). Le coppie
   testo/sfondo sono verificate WCAG AA nei due temi: chi cambia un colore rifà il conto. */

:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1c1c1a;
  --muted: #55554f;
  --line: #dcd9d1;
  --accent: #2c5f4f;
  --accent-hover: #234c3f;
  --on-accent: #ffffff;
  --accent-soft: #e6efea;
  --focus: #2c5f4f;
  --maxw: 68rem;
  --pad: clamp(1rem, 4vw, 2.5rem);
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111412;
    --surface: #181c1a;
    --text: #e6e8e5;
    --muted: #a7ada8;
    --line: #2d3430;
    --accent: #86cbb0;
    --accent-hover: #a3d9c4;
    --on-accent: #0d1a15;
    --accent-soft: #1b2a24;
    --focus: #86cbb0;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans",
    "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.0625rem);
  line-height: 1.6;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.6em; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 1.35rem + 2vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 1.2rem + 0.8vw, 1.75rem); }
h3 { font-size: 1.125rem; }
p, ul, ol { margin: 0 0 1em; }
ul, ol { padding-left: 1.25em; }
li + li { margin-top: 0.35em; }

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }
a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

code { font-size: 0.92em; }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--surface); color: var(--text); padding: 0.6rem 1rem; z-index: 50;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- avviso di anteprima ---------- */
.preview { background: var(--accent-soft); color: var(--text); border-bottom: 1px solid var(--line); font-size: 0.9375rem; }
.preview p { margin-block: 0; padding-block: 0.55rem; line-height: 1.45; }
.preview a { color: var(--accent); overflow-wrap: anywhere; }

/* ---------- intestazione ---------- */
.site-head { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-head .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.5rem 1rem; padding-block: 0.75rem;
}
.logo {
  display: inline-flex; align-items: center; gap: 0.55rem;
  color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.125rem;
}
.logo svg { display: block; flex: none; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; }
.site-nav li + li { margin-top: 0; }
.site-nav a { color: var(--text); text-decoration: none; padding: 0.3rem 0; display: inline-block; }
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] { color: var(--accent); text-decoration: underline; text-decoration-thickness: 2px; }
.head-actions { display: flex; align-items: center; gap: 0.75rem; margin-left: auto; }
.head-actions .login { color: var(--text); text-decoration: none; font-weight: 600; }
.head-actions .login:hover { color: var(--accent); }

@media (max-width: 47.99rem) {
  .site-nav { order: 3; flex-basis: 100%; border-top: 1px solid var(--line); padding-top: 0.4rem; }
  .site-head .wrap { column-gap: 0.5rem; }
  .head-actions { gap: 0.6rem; }
  .head-actions .button.small { padding: 0.3rem 0.75rem; }
}

/* A 320 px logo, «Accedi» e «Scrivici» stanno su una riga, e la navigazione su una sola sotto. */
@media (max-width: 22.5rem) {
  .site-head .wrap { column-gap: 0.4rem; }
  .logo { font-size: 1rem; gap: 0.4rem; }
  .head-actions { gap: 0.5rem; }
  .head-actions .button.small { padding: 0.25rem 0.65rem; }
  .site-nav ul { gap: 0.25rem 0.8rem; font-size: 0.9375rem; }
}

/* ---------- pulsanti ---------- */
.button {
  display: inline-block; text-decoration: none; font-weight: 600;
  border-radius: 999px; padding: 0.6rem 1.2rem; line-height: 1.3;
  border: 2px solid var(--accent);
}
.button.primary { background: var(--accent); color: var(--on-accent); }
.button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.button.secondary { background: transparent; color: var(--accent); }
.button.secondary:hover { background: var(--accent-soft); color: var(--accent); }
.button.small { padding: 0.35rem 0.9rem; font-size: 0.9375rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.5rem 0 0.75rem; }

/* ---------- sezioni ---------- */
main { display: block; }
.hero { padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2rem, 5vw, 3.5rem); }
.hero h1 { max-width: 24ch; }
.lead { font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem); max-width: 40rem; }
.note { color: var(--muted); font-size: 0.9375rem; }
.kicker {
  color: var(--accent); font-weight: 700; font-size: 0.8125rem;
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.75rem;
}

.section { padding-block: clamp(2rem, 5vw, 3.5rem); border-top: 1px solid var(--line); }
.section.alt { background: var(--surface); }
.section > .wrap > p, .section > .wrap > ul { max-width: 46rem; }

.chips { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 1.25rem; }
.chips li { margin: 0; background: var(--accent-soft); border-radius: 999px; padding: 0.3rem 0.85rem; font-size: 0.9375rem; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); margin-top: 1.25rem; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1rem;
}
.section.alt .card { background: var(--bg); }
.card h3 { margin-bottom: 0.4em; }
.card p { margin-bottom: 0.6em; }
.card .more { font-weight: 600; }

.points { list-style: none; padding: 0; display: grid; gap: 1rem; max-width: 46rem; }
.points li { margin: 0; padding-left: 1rem; border-left: 3px solid var(--accent); }

.steps { counter-reset: passo; list-style: none; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); }
.steps li { margin: 0; counter-increment: passo; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; }
.steps li::before { content: counter(passo); display: block; font-weight: 700; color: var(--accent); font-size: 1.25rem; margin-bottom: 0.25rem; }

/* ---------- pagine di testo ---------- */
.page-head { padding-block: clamp(2rem, 6vw, 3.5rem) 1rem; }
.prose { max-width: 46rem; padding-bottom: clamp(2rem, 5vw, 3.5rem); }
.prose h2 { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.prose h3 { margin-top: 1.5rem; }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.25rem; margin-bottom: 2rem; }
.toc p { margin-bottom: 0.4em; font-weight: 600; }
.toc ul { margin: 0; }
.updated { color: var(--muted); font-size: 0.9375rem; }

dl.contacts { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.25rem; margin: 0 0 1.5rem; }
dl.contacts dt { font-weight: 600; }
dl.contacts dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 30rem) {
  dl.contacts { grid-template-columns: 1fr; }
  dl.contacts dd { margin-bottom: 0.5rem; }
}

.callout { background: var(--accent-soft); border-radius: var(--radius); padding: 1.25rem; max-width: 46rem; }
.callout p:last-child { margin-bottom: 0; }

/* ---------- piede ---------- */
.site-foot { border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 0.9375rem; padding-block: 2rem; }
.site-foot p { margin-bottom: 0.5em; }
.site-foot a { color: var(--muted); }
.site-foot a:hover { color: var(--accent); }
.foot-nav ul { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; }
.foot-nav li + li { margin-top: 0; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}