/* Documentazione di ONTO: stessa palette di onto.html. */
:root {
  --bg: #0d1117;
  --bg-alt: #11161d;
  --panel: #161d27;
  --panel-edge: #232c3a;
  --text: #d6dde6;
  --text-dim: #8b97a5;
  --v: #2ecc71;
  --f: #e5534b;
  --n: #e8a13a;
  --accent: #58a6ff;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --barra: 57px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--barra) + 16px); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); }

/* ==== Barra ==== */
header {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg-alt); border-bottom: 1px solid var(--panel-edge);
}
.barra {
  max-width: 1240px; margin: 0 auto; padding: 0 24px; height: var(--barra);
  display: flex; align-items: center; gap: 24px;
}
.indietro { color: var(--text-dim); font-size: .85rem; font-family: var(--mono); }
.indietro:hover { color: var(--text); text-decoration: none; }
.logo { font-family: var(--mono); font-weight: 700; font-size: 1.25rem; letter-spacing: 2px; color: var(--text); }
.logo:hover { text-decoration: none; }
.logo .v { color: var(--v); } .logo .f { color: var(--f); } .logo .n { color: var(--n); }
.logo .doc { color: var(--text-dim); font-weight: 400; font-size: .85rem; letter-spacing: 1px; margin-left: 4px; }
.btn {
  margin-left: auto; padding: 8px 18px; border-radius: 6px;
  background: var(--accent); color: #0d1117; font-weight: 600; font-size: .92rem;
}
.btn:hover { text-decoration: none; filter: brightness(1.1); }
.apri-menu {
  display: none; width: 40px; height: 40px; border-radius: 8px; cursor: pointer;
  background: transparent; border: 1px solid var(--panel-edge); color: var(--text); font-size: 20px; line-height: 1;
}

/* ==== Impianto ==== */
.impianto {
  max-width: 1240px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 48px;
}
.menu {
  position: sticky; top: var(--barra); align-self: start;
  max-height: calc(100vh - var(--barra)); overflow-y: auto;
  padding: 28px 8px 28px 0; font-size: .92rem;
}
.menu ul { list-style: none; }
.menu a { display: block; padding: 4px 10px; border-radius: 6px; color: var(--text-dim); }
.menu a:hover { color: var(--text); text-decoration: none; background: var(--panel); }
.menu a.attiva { color: var(--text); background: var(--panel); border-left: 2px solid var(--accent); }
.menu .home { font-family: var(--mono); font-size: .82rem; }
.menu .gruppo {
  margin: 22px 0 6px 10px; font-size: .72rem; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-dim); opacity: .8;
}
.menu .sezioni { margin: 4px 0 8px 12px; border-left: 1px solid var(--panel-edge); font-size: .84rem; }
.menu .sezioni a { padding: 2px 10px; }

main { min-width: 0; padding: 40px 0 72px; }
article { max-width: 820px; }

/* ==== Testo ==== */
h1 { font-size: 2rem; line-height: 1.25; margin-bottom: 20px; }
h2 { font-size: 1.45rem; margin: 48px 0 14px; padding-top: 18px; border-top: 1px solid var(--panel-edge); }
h3 { font-size: 1.15rem; margin: 32px 0 10px; }
h4 { font-size: 1rem; margin: 24px 0 8px; color: var(--text-dim); }
p, ul, ol, blockquote, .codice, .tabella { margin-bottom: 16px; }
article ul, article ol { padding-left: 24px; }
li { margin: 4px 0; }
li > ul, li > ol { margin: 4px 0 4px; }
hr { border: 0; height: 0; margin: 0; }
strong { color: #eef2f6; }
blockquote {
  border-left: 3px solid var(--n); background: var(--bg-alt);
  padding: 12px 18px; border-radius: 0 8px 8px 0; color: var(--text-dim);
}
blockquote p:last-child { margin-bottom: 0; }
:not(pre) > code {
  background: var(--panel); border: 1px solid var(--panel-edge); border-radius: 4px;
  padding: 1px 5px; font-size: .86em; overflow-wrap: anywhere;
}
.formula {
  font-family: var(--mono); text-align: center; font-size: 1.05rem;
  background: var(--bg-alt); border: 1px solid var(--panel-edge); border-radius: 8px; padding: 14px;
}
.attacco { color: var(--text-dim); font-size: 1.08rem; max-width: 680px; }

/* ==== Codice ==== */
.codice { position: relative; }
.codice pre {
  background: var(--bg-alt); border: 1px solid var(--panel-edge); border-radius: 8px;
  padding: 16px 18px; overflow-x: auto; font-size: .86rem; line-height: 1.55;
}
.codice .lingua {
  position: absolute; top: 6px; right: 10px; font-family: var(--mono); font-size: .68rem;
  color: var(--text-dim); opacity: .7; text-transform: uppercase; letter-spacing: 1px;
}
.codice .cm { color: var(--text-dim); font-style: italic; }
.codice .kw { color: var(--accent); }
.codice .str { color: var(--v); }

/* ==== Tabelle ==== */
.tabella { overflow-x: auto; }
table { border-collapse: collapse; font-size: .9rem; }
th, td { border: 1px solid var(--panel-edge); padding: 6px 12px; text-align: left; vertical-align: top; }
th { background: var(--panel); font-weight: 600; }
tbody tr:nth-child(even) td { background: rgba(255, 255, 255, .02); }

/* ==== Indice ==== */
.schede { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-bottom: 8px; }
.scheda {
  display: block; background: var(--panel); border: 1px solid var(--panel-edge);
  border-radius: 10px; padding: 18px 20px; color: var(--text);
}
.scheda:hover { border-color: var(--accent); text-decoration: none; }
.scheda strong { display: block; margin-bottom: 6px; }
.scheda span { color: var(--text-dim); font-size: .9rem; }

/* ==== Piede ==== */
.fonte { margin-top: 48px; font-size: .82rem; color: var(--text-dim); font-family: var(--mono); overflow-wrap: anywhere; }
.vicini { display: flex; gap: 14px; margin-top: 16px; max-width: 820px; }
.vicini a {
  flex: 1; border: 1px solid var(--panel-edge); border-radius: 8px; padding: 12px 16px; color: var(--text);
}
.vicini a:hover { border-color: var(--accent); text-decoration: none; }
.vicini .succ { text-align: right; }
footer {
  border-top: 1px solid var(--panel-edge); padding: 28px 24px; text-align: center;
  display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; font-size: .85rem;
}
footer a { color: var(--text-dim); }
footer p { width: 100%; font-size: .72rem; color: var(--text-dim); opacity: .6; letter-spacing: 1px; }

@media (max-width: 900px) {
  .impianto { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 0 16px; }
  .barra { padding: 0 16px; gap: 14px; }
  .apri-menu { display: block; }
  .btn { display: none; }
  .apri-menu { margin-left: auto; }
  .menu {
    display: none; position: fixed; inset: var(--barra) 0 0 0; max-height: none; z-index: 9;
    background: var(--bg); padding: 16px;
  }
  .menu.aperto { display: block; }
  main { padding-top: 24px; }
  h1 { font-size: 1.6rem; }
}