/* ==========================================================================
   Diff-FIT — scheda tecnica di modelli e pesi
   Documento a scorrimento, stessa palette del deck ma impaginato da manuale.
   Nessuna dipendenza esterna.
   ========================================================================== */

:root {
  --paper:        #faf9f6;
  --paper-sunk:   #f2f0ea;
  --paper-card:   #ffffff;
  --ink:          #17171a;
  --ink-soft:     #56544e;
  --ink-faint:    #8b877e;
  --rule:         #dedad1;
  --rule-strong:  #c6c1b5;

  --accent:       #0e6f63;
  --accent-deep:  #0a534a;
  --accent-wash:  #e6f1ef;
  --dna:          #a4552c;
  --dna-wash:     #f7ece5;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
          "Liberation Sans", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           Georgia, "Liberation Serif", serif;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "DejaVu Sans Mono",
          Menlo, Consolas, monospace;

  --nav-w: 16.5rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    radial-gradient(circle at 12% 6%, rgba(14, 111, 99, 0.03), transparent 42%),
    radial-gradient(circle at 88% 94%, rgba(164, 85, 44, 0.028), transparent 46%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ------------------------------------------------------------ impianto -- */

.wrap {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  gap: 3.5rem;
  max-width: 78rem;
  margin: 0 auto;
  padding: 0 2.5rem 6rem;
}

/* --------------------------------------------------------------- nav ---- */

.nav {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: 2.6rem 0 3rem;
  font-size: 0.8rem;
}
.nav .brand {
  font-family: var(--serif);
  font-size: 1.32rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}
.nav .brand-sub {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.9rem;
}
.nav a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.3rem 0 0.3rem 0.85rem;
  border-left: 2px solid var(--rule);
  transition: color 0.15s, border-color 0.15s;
}
.nav a:hover { color: var(--accent); border-left-color: var(--rule-strong); }
.nav a.is-active {
  color: var(--accent-deep);
  border-left-color: var(--accent);
  font-weight: 600;
}
.nav a .num {
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--ink-faint);
  margin-right: 0.55em;
}
.nav a.is-active .num { color: var(--accent); }
.nav .group {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 1.5rem 0 0.5rem;
}
.nav .back {
  margin-top: 2.2rem;
  border-left: none;
  padding-left: 0;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

/* -------------------------------------------------------------- testo --- */

.doc { padding: 2.6rem 0 0; min-width: 0; }

.doc-head { padding-bottom: 2.4rem; border-bottom: 1px solid var(--rule); margin-bottom: 3rem; }
.doc-head h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 2.9rem;
  line-height: 1.05;
  letter-spacing: -0.028em;
  margin: 0 0 0.6rem;
}
.doc-head .stand {
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 40rem;
  margin: 0 0 1.4rem;
}
.doc-head .meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
}
.doc-head .meta b { color: var(--accent); font-weight: 500; }

section.blk { scroll-margin-top: 2rem; margin-bottom: 4rem; }

h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.85rem;
  line-height: 1.12;
  letter-spacing: -0.022em;
  margin: 0 0 1.1rem;
  padding-top: 0.4rem;
}
h2 .num {
  font-family: var(--mono);
  font-size: 0.52em;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.55rem;
}
h3 {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.008em;
  margin: 2.1rem 0 0.7rem;
}
h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 1.7rem 0 0.6rem;
}

p { margin: 0 0 1rem; max-width: 46rem; }
strong { font-weight: 650; }
em { font-style: italic; }
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--paper-sunk);
  padding: 0.1em 0.35em;
  border-radius: 2px;
  color: var(--accent-deep);
}
a { color: var(--accent); text-decoration: none;
    border-bottom: 1px solid rgba(14, 111, 99, 0.26); }
a:hover { border-bottom-color: var(--accent); }

ul { max-width: 46rem; padding-left: 1.1rem; margin: 0 0 1rem; }
li { margin-bottom: 0.4rem; }
li::marker { color: var(--ink-faint); }

/* ------------------------------------------------------------ tabelle --- */

.tbl-wrap { overflow-x: auto; margin: 1.1rem 0 1.4rem; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  min-width: 34rem;
}
th {
  font-family: var(--mono);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: left;
  padding: 0 0.85em 0.65em;
  border-bottom: 1px solid var(--rule-strong);
  white-space: nowrap;
}
td {
  padding: 0.65em 0.85em;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-soft);
  vertical-align: top;
}
tr:last-child td { border-bottom: none; }
td:first-child { color: var(--ink); font-weight: 550; }
td .mono, th .mono { font-family: var(--mono); font-size: 0.92em; }
.num-col { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------- riquadri ------- */

.note {
  border-left: 2px solid var(--accent);
  background: var(--paper-card);
  padding: 0.95rem 1.15rem;
  margin: 1.3rem 0;
  max-width: 46rem;
  border-radius: 0 2px 2px 0;
}
.note.warn { border-left-color: var(--dna); background: var(--dna-wash); }
.note.flat { border-left-color: var(--rule-strong); background: var(--paper-sunk); }
.note p:last-child { margin-bottom: 0; }
.note .lab {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.4rem;
}
.note.warn .lab { color: var(--dna); }
.note.flat .lab { color: var(--ink-faint); }

pre {
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.65;
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.95rem 1.1rem;
  overflow-x: auto;
  margin: 1.1rem 0 1.4rem;
  max-width: 46rem;
  color: var(--ink-soft);
}
pre code { background: none; padding: 0; color: inherit; font-size: 1em; }
pre .k { color: var(--accent-deep); }
pre .s { color: var(--dna); }
pre .c { color: var(--ink-faint); font-style: italic; }

/* Scheda di un componente: intestazione + specifiche */
.spec {
  border: 1px solid var(--rule);
  background: var(--paper-card);
  border-radius: 3px;
  padding: 1.15rem 1.3rem 1.25rem;
  margin: 1.2rem 0;
}
.spec > h3 { margin-top: 0; }
.spec .role {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.spec dl {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 0.45rem 1.2rem;
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
}
.spec dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  padding-top: 0.1rem;
}
.spec dd { margin: 0; color: var(--ink-soft); }
.spec dd b { color: var(--ink); font-weight: 600; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }

/* Pastiglie */
.pill {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  padding: 0.16em 0.55em;
  border-radius: 2px;
  white-space: nowrap;
  display: inline-block;
}
.pill.ok   { background: var(--accent-wash); color: var(--accent-deep); }
.pill.no   { background: #f3eeea; color: #97614a; }
.pill.warn { background: var(--dna-wash); color: var(--dna); }

/* Mappa delle classi del parser */
.classes { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.9rem 0 1.3rem; }
.cls {
  font-family: var(--mono);
  font-size: 0.68rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.22em 0.5em;
  color: var(--ink-soft);
  background: var(--paper-card);
}
.cls b { color: var(--accent); font-weight: 500; }
.cls.off { color: var(--ink-faint); background: transparent; }

footer {
  margin-top: 4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
  font-size: 0.78rem;
  color: var(--ink-faint);
  max-width: 46rem;
}

/* ------------------------------------------------------------ schermi --- */

@media (max-width: 60rem) {
  .wrap { grid-template-columns: 1fr; gap: 0; padding: 0 1.4rem 4rem; }
  .nav { position: static; height: auto; padding: 1.8rem 0 1rem; }
  .nav a { display: inline-block; border-left: none; border-bottom: 2px solid var(--rule);
           padding: 0.2rem 0.7rem 0.2rem 0; margin-right: 0.6rem; }
  .spec dl { grid-template-columns: 1fr; gap: 0.15rem 0; }
  .spec dt { margin-top: 0.5rem; }
  .grid2 { grid-template-columns: 1fr; }
  .doc-head h1 { font-size: 2.1rem; }
}

@media print {
  .nav { display: none; }
  .wrap { grid-template-columns: 1fr; max-width: none; }
  body { background: #fff; }
  section.blk { break-inside: avoid; }
}