/* =========================================================================
   Report neuropatia del nervo radiale — foglio di stile condiviso
   Tono: editoriale clinico sobrio
   ========================================================================= */

:root {
  /* Palette neutra avorio/grigio caldo */
  --bg: #f7f4ee;
  --bg-elevated: #fffdf9;
  --surface: #ffffff;
  --ink: #1c1d22;
  --ink-soft: #44464f;
  --ink-faint: #71747e;
  --line: #e3ddd2;
  --line-soft: #efe9df;

  /* Accento clinico teal/blu */
  --accent: #0f6e6e;
  --accent-deep: #0a4f52;
  --accent-soft: #e3f0ef;
  --accent-blue: #1f5f8b;

  /* Tier di evidenza */
  --tier-strong: #1f7a5a;
  --tier-strong-bg: #e7f3ec;
  --tier-strong-line: #bfe0cd;
  --tier-weak: #9a6a12;
  --tier-weak-bg: #fbf1dd;
  --tier-weak-line: #ecd9ad;
  --tier-none: #a23b3b;
  --tier-none-bg: #f8e7e5;
  --tier-none-line: #ecc4bf;

  /* Tipografia */
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --measure: 68ch;
  --radius: 10px;
  --radius-sm: 7px;
  --shadow: 0 1px 2px rgba(28, 29, 34, 0.04), 0 8px 24px rgba(28, 29, 34, 0.06);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* la pagina non supera mai la viewport in larghezza; clip (non hidden)
     così gli elementi sticky continuano a funzionare */
  max-width: 100vw;
  overflow-x: clip;
}

/* ---------- Skip link & accessibilità ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--accent-deep);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- Header / topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 244, 238, 0.86);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.7rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand__mark {
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
}
.brand small {
  display: block;
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.topbar__link {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}
.topbar__link:hover {
  color: var(--accent-deep);
}
.topbar__link[aria-current="page"] {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

/* ---------- Selettore lingua ---------- */
.langswitch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
}
.langswitch__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  cursor: pointer;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.4;
}
.langswitch__btn:hover:not([disabled]):not([aria-current="true"]) {
  background: var(--accent-soft);
  color: var(--accent-deep);
}
.langswitch__btn[aria-current="true"] {
  background: var(--accent);
  color: #fff;
  cursor: default;
}
.langswitch__btn[disabled] {
  color: var(--ink-faint);
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- Layout principale ---------- */
.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

/* ---------- Hero ---------- */
.hero {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--line);
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
  max-width: 20ch;
}
.hero__subtitle {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.1rem, 2.4vw, 1.55rem);
  font-weight: 400;
  color: var(--ink-soft);
  margin: 0 0 1.6rem;
  max-width: 40ch;
  line-height: 1.4;
}
.hero__lead {
  max-width: var(--measure);
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.hero__lead strong {
  color: var(--ink);
}
.hero__meta {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  font-size: 0.88rem;
  color: var(--ink-faint);
}
.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ---------- Layout a due colonne con TOC ---------- */
.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 3.5rem;
  margin-top: 2.5rem;
  align-items: start;
}
.toc {
  position: sticky;
  top: 5.2rem;
  font-size: 0.88rem;
  min-width: 0;
}
.toc__title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 700;
  margin: 0 0 0.8rem;
}
/* secondo gruppo dell'indice (Parte 2) */
.toc ol + .toc__title {
  margin-top: 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
}
.toc li {
  margin: 0;
}
.toc a {
  display: block;
  padding: 0.34rem 0 0.34rem 0.9rem;
  border-left: 2px solid var(--line);
  color: var(--ink-soft);
  text-decoration: none;
  line-height: 1.35;
}
.toc a:hover {
  color: var(--accent-deep);
  border-left-color: var(--accent);
  background: linear-gradient(90deg, var(--accent-soft), transparent);
}
.toc a.is-active {
  color: var(--accent-deep);
  font-weight: 600;
  border-left-color: var(--accent);
}

.content {
  max-width: var(--measure);
  min-width: 0;
}

/* ---------- Divisore di parte (Parte 2) ---------- */
.part-divider {
  margin: 3.5rem 0 0.5rem;
  padding: 2.6rem 1.7rem 2.3rem;
  background: linear-gradient(180deg, var(--accent-soft), var(--bg-elevated));
  border: 1px solid var(--tier-strong-line);
  border-radius: var(--radius);
}
.part-divider__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 0.7rem;
}
.part-divider__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 0.8rem;
}
.part-divider__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: 1.06rem;
  color: var(--ink-soft);
}
.part-divider__lead strong {
  color: var(--ink);
}

/* ---------- Sezioni & tipografia ---------- */
.section {
  padding: 2.6rem 0;
  border-top: 1px solid var(--line-soft);
}
.section:first-child {
  border-top: 0;
  padding-top: 1rem;
}
.section__num {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
}
h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0.3rem 0 1rem;
}
h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.32rem;
  line-height: 1.3;
  margin: 2rem 0 0.6rem;
}
h4 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 1.4rem 0 0.4rem;
  color: var(--ink);
}
p {
  margin: 0 0 1.05rem;
}
a {
  color: var(--accent-blue);
}
strong {
  font-weight: 700;
  color: var(--ink);
}
ul,
ol {
  margin: 0 0 1.15rem;
  padding-left: 1.3rem;
}
li {
  margin: 0 0 0.5rem;
}
li::marker {
  color: var(--accent);
}

/* ---------- Callout TL;DR ---------- */
.callouts {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0 0;
}
.callout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow);
}
.callout h4 {
  margin: 0 0 0.35rem;
  color: var(--accent-deep);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.callout p {
  margin: 0;
  font-size: 0.99rem;
  color: var(--ink-soft);
}

/* ---------- Stat highlights ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin: 1.6rem 0 1.4rem;
}
.stat {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
}
.stat__num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--accent-deep);
  letter-spacing: -0.02em;
}
.stat__label {
  margin-top: 0.45rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* ---------- Schema gradi di lesione ---------- */
.grades {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin: 1.4rem 0;
}
.grade {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  background: var(--surface);
}
.grade__tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}
.grade h4 {
  margin: 0.3rem 0 0.4rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
}
.grade p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.grade--good {
  border-top: 3px solid var(--tier-strong);
}
.grade--mid {
  border-top: 3px solid var(--tier-weak);
}
.grade--bad {
  border-top: 3px solid var(--tier-none);
}

/* ---------- Legenda tier ---------- */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  margin: 1.2rem 0 1.4rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.86rem;
}
.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
}
.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex: none;
}
.dot--strong { background: var(--tier-strong); }
.dot--weak { background: var(--tier-weak); }
.dot--none { background: var(--tier-none); }

/* ---------- Tabella comparativa interventi ---------- */
.table-wrap {
  margin: 1.2rem 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.table-scroll {
  overflow-x: auto;
}
table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 640px;
}
table.compare caption {
  text-align: left;
  padding: 0.9rem 1.1rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--line);
}
table.compare th,
table.compare td {
  text-align: left;
  padding: 0.85rem 1rem;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}
table.compare thead th {
  background: var(--accent-deep);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  position: sticky;
  top: 0;
}
table.compare tbody tr:last-child td {
  border-bottom: 0;
}
table.compare .cell-intervention {
  font-weight: 600;
  color: var(--ink);
}
table.compare .cell-intervention small {
  display: block;
  font-weight: 400;
  color: var(--ink-faint);
  font-size: 0.82rem;
  margin-top: 0.2rem;
}
/* righe color-coded per tier */
tr.tier-strong { background: var(--tier-strong-bg); }
tr.tier-weak { background: var(--tier-weak-bg); }
tr.tier-none { background: var(--tier-none-bg); }
tr.tier-strong td { border-bottom-color: var(--tier-strong-line); }
tr.tier-weak td { border-bottom-color: var(--tier-weak-line); }
tr.tier-none td { border-bottom-color: var(--tier-none-line); }

/* badge di forza evidenza */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}
.badge--strong {
  background: #fff;
  color: var(--tier-strong);
  border: 1px solid var(--tier-strong-line);
}
.badge--weak {
  background: #fff;
  color: var(--tier-weak);
  border: 1px solid var(--tier-weak-line);
}
.badge--none {
  background: #fff;
  color: var(--tier-none);
  border: 1px solid var(--tier-none-line);
}
.evidence-level {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* ---------- Timeline raccomandazioni ---------- */
.timeline {
  margin: 1.4rem 0;
  border-left: 2px solid var(--line);
  padding-left: 1.5rem;
}
.timeline__step {
  position: relative;
  padding-bottom: 1.6rem;
}
.timeline__step::before {
  content: "";
  position: absolute;
  left: -1.93rem;
  top: 0.35rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.timeline__phase {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}
.timeline__step h4 {
  margin: 0.2rem 0 0.4rem;
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
}
.timeline__step p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------- Caveat box ---------- */
.note {
  background: var(--accent-soft);
  border: 1px solid var(--tier-strong-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  font-size: 0.95rem;
  color: var(--accent-deep);
  margin: 1.2rem 0;
}

/* ---------- Fonti ---------- */
.sources {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.sources p {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 2.5rem 1.5rem;
  margin-top: 3rem;
}
.site-footer__inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.88rem;
  color: var(--ink-faint);
}
.site-footer a {
  color: var(--accent-deep);
  font-weight: 600;
}

/* =========================================================================
   Versione integrale — layout documento a colonna singola
   ========================================================================= */
.integral .doc {
  max-width: 76ch;
  margin: 0 auto;
  padding: 3rem 0 4rem;
}
.integral .doc h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1.6rem;
}
.integral .doc h2 {
  margin-top: 2.8rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.integral .doc h3 {
  margin-top: 2rem;
}
.integral .doc h4 {
  margin-top: 1.5rem;
}
.integral .doc hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}
.integral .doc em {
  color: var(--ink-soft);
}
.integral .doc .tldr-list strong,
.integral .doc ul strong {
  color: var(--ink);
}
.doc-note {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-blue);
  border-radius: var(--radius);
  padding: 1rem 1.3rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .toc {
    position: static;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    background: var(--bg-elevated);
  }
  .toc a {
    border-left: 0;
    padding-left: 0;
  }
}
@media (max-width: 620px) {
  body { font-size: 1rem; }
  .topbar__inner { padding: 0.6rem 1rem; }
  .shell { padding: 0 1rem 3rem; }
  .topbar__nav { gap: 0.8rem; }
  .topbar__link { font-size: 0.85rem; }
  .hero { padding: 2.5rem 0 2rem; }
}

/* Tabella interventi → card impilate su mobile */
@media (max-width: 620px) {
  .table-wrap {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
  }
  .table-scroll {
    overflow-x: visible;
  }
  table.compare {
    min-width: 0;
    font-size: 0.96rem;
    display: block;
  }
  table.compare caption {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 1rem;
  }
  table.compare thead {
    display: none;
  }
  table.compare tbody {
    display: block;
  }
  table.compare tr {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
  }
  table.compare td {
    display: block;
    width: 100%;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--line-soft);
  }
  table.compare tr td:last-child {
    border-bottom: 0;
  }
  table.compare td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 0.35rem;
  }
  table.compare td.cell-intervention {
    font-size: 1.06rem;
    border-bottom: 2px solid rgba(28, 29, 34, 0.12);
  }
  table.compare td.cell-intervention::before {
    content: none;
  }
  /* preserva il bordo-tier dentro le card */
  tr.tier-strong td { border-bottom-color: var(--tier-strong-line); }
  tr.tier-weak td { border-bottom-color: var(--tier-weak-line); }
  tr.tier-none td { border-bottom-color: var(--tier-none-line); }
  tr.tier-strong td.cell-intervention,
  tr.tier-weak td.cell-intervention,
  tr.tier-none td.cell-intervention {
    border-bottom-width: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}