/* MechatronIQ — foglio di stile comune per pagine legali, success e altre.
   L'aspetto "manuale d'officina" condivide tipografia, doc header/footer,
   palette e layout base con index.html (che inlinea il suo CSS per ragioni
   di first-paint). */

:root {
  --paper: #ece5d3;
  --paper-2: #e2d9c1;
  --paper-3: #f5efde;
  --ink: #141311;
  --ink-2: #3a372f;
  --ink-3: #6b6658;
  --accent: #d97706;
  --accent-dark: #9a4d05;
  --brand: #3b82f6;
  --brand-dark: #2563eb;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.65;
  overflow-x: hidden;
  background-image:
    linear-gradient(rgba(20,19,17,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,19,17,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
}

::selection { background: var(--ink); color: var(--paper); }

body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.06 0'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  opacity: 0.5;
}

header, main, section, footer { position: relative; z-index: 1; }

.serif { font-family: 'Instrument Serif', 'Times New Roman', serif; font-weight: 400; letter-spacing: -0.01em; }
.caps { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; font-weight: 500; }

a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--accent); text-decoration-thickness: 1.5px; }
a:hover { color: var(--accent-dark); text-decoration-color: var(--ink); }

hr.heavy { border: none; border-top: 2px solid var(--ink); margin: 0; }
hr.thin { border: none; border-top: 1px solid var(--ink); margin: 0; }
hr.hair { border: none; border-top: 1px solid rgba(20,19,17,0.2); margin: 0; }

/* ═════════ DOC HEADER (sticky) ═════════ */

.dochead {
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
  position: sticky; top: 0; z-index: 100;
}
.dochead-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px 32px;
  font-size: 0.78rem;
  max-width: 1320px;
  margin: 0 auto;
}
.dochead-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink);
  font-family: 'Instrument Serif', serif;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.dochead-brand img { width: 28px; height: 28px; }
.dochead-brand em { font-style: italic; color: var(--accent); }
.dochead-meta {
  display: flex; gap: 16px;
  font-size: 0.72rem;
  color: var(--ink-2);
  justify-content: center;
  flex-wrap: wrap;
}
.dochead-meta span { white-space: nowrap; }
.dochead-meta b { color: var(--ink); font-weight: 500; }
.dochead-back {
  text-decoration: none;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.68rem;
  padding: 6px 12px;
  border: 1px solid var(--ink);
  transition: all 0.12s;
}
.dochead-back:hover { background: var(--ink); color: var(--paper); }

/* ═════════ DOC PAGE ═════════ */

.doc {
  max-width: 780px;
  margin: 0 auto;
  padding: 56px 32px 100px;
  position: relative;
  z-index: 1;
}

.doc-head {
  padding-bottom: 28px;
  margin-bottom: 48px;
  border-bottom: 2px solid var(--ink);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
}
.doc-head .tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-2);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.doc-head .tag .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.doc-head h1 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.015em;
}
.doc-head h1 em { font-style: italic; color: var(--accent); }
.doc-head .stamp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-align: right;
  white-space: nowrap;
  line-height: 1.6;
}
.doc-head .stamp b { color: var(--ink); font-weight: 500; }

.doc-updated {
  font-size: 0.82rem;
  color: var(--ink-3);
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px dashed var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
}
.doc-updated b { color: var(--ink); }

.doc h2 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-style: italic;
  font-size: 1.6rem;
  line-height: 1.15;
  margin: 48px 0 18px;
  padding-top: 20px;
  border-top: 1px solid var(--ink);
  color: var(--ink);
  position: relative;
}
.doc h2::before {
  content: attr(data-sig);
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.doc h3 {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 28px 0 12px;
}

.doc p {
  color: var(--ink-2);
  margin-bottom: 14px;
  font-size: 0.92rem;
  max-width: 68ch;
}
.doc p strong, .doc li strong { color: var(--ink); font-weight: 700; }

.doc ul, .doc ol {
  margin: 10px 0 18px 0;
  padding-left: 28px;
  color: var(--ink-2);
  font-size: 0.92rem;
}
.doc ul li, .doc ol li { margin-bottom: 7px; padding-left: 6px; }
.doc ul li::marker { content: "— "; color: var(--accent); }
.doc ol { padding-left: 36px; }
.doc ol li::marker { font-family: 'Instrument Serif', serif; font-style: italic; color: var(--accent); }

.doc code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-3);
  border: 1px solid var(--ink-3);
  padding: 1px 6px;
  font-size: 0.85em;
  color: var(--ink);
}

/* Callouts (info / warn / ok) */

.callout {
  border: 2px solid var(--ink);
  background: var(--paper-3);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.88rem;
  color: var(--ink-2);
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}
.callout::before {
  content: attr(data-label);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  background: var(--ink);
  color: var(--paper);
  white-space: nowrap;
  height: fit-content;
}
.callout.warn { border-color: var(--accent); background: #fdf4e7; }
.callout.warn::before { background: var(--accent); }
.callout.ok { border-color: var(--brand-dark); background: #eef3fc; }
.callout.ok::before { background: var(--brand); color: #fff; }

/* Tables (for cookie policy etc.) */

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  border: 2px solid var(--ink);
  background: var(--paper-3);
}
.doc th {
  background: var(--ink);
  color: var(--paper);
  padding: 10px 12px;
  text-align: left;
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  border-right: 1px solid var(--ink-3);
}
.doc th:last-child { border-right: none; }
.doc td {
  padding: 10px 12px;
  border-top: 1px solid rgba(20,19,17,0.2);
  border-right: 1px solid rgba(20,19,17,0.2);
  color: var(--ink-2);
  vertical-align: top;
}
.doc td:last-child { border-right: none; }

/* Link back / signature */

.doc-sign {
  margin-top: 64px;
  padding-top: 28px;
  border-top: 2px solid var(--ink);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}
.doc-sign a {
  text-decoration: none;
  color: var(--ink);
  padding: 8px 14px;
  border: 1px solid var(--ink);
  transition: all 0.12s;
}
.doc-sign a:hover { background: var(--ink); color: var(--paper); }

/* ═════════ FOOTER ═════════ */

.site-footer {
  border-top: 2px solid var(--ink);
  background: var(--paper-2);
  padding: 48px 32px 22px;
  position: relative;
  z-index: 1;
}
.footer-container { max-width: 1180px; margin: 0 auto; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--ink);
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-family: 'Instrument Serif', serif; font-size: 1.5rem; margin-bottom: 12px; }
.footer-brand img { width: 30px; height: 30px; }
.footer-brand em { font-style: italic; color: var(--accent); }
.footer-desc { font-size: 0.86rem; color: var(--ink-2); max-width: 44ch; margin-bottom: 14px; }
.footer-meta { font-size: 0.7rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.12em; }
.footer-title { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--ink-3); margin-bottom: 14px; }
.footer-links { list-style: none; padding: 0; }
.footer-links li { padding: 4px 0; }
.footer-links a { color: var(--ink); text-decoration: none; font-size: 0.86rem; }
.footer-links a:hover { border-bottom: 1px solid var(--accent); color: var(--accent); }
.footer-bottom {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 20px;
  padding-top: 22px;
  font-size: 0.7rem;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.footer-bottom .center { text-align: center; }
.footer-bottom .right { text-align: right; }
.footer-bottom a { color: var(--ink-2); text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ═════════ SUCCESS PAGE ═════════ */

.success {
  max-width: 780px;
  margin: 0 auto;
  padding: 64px 32px 80px;
  position: relative;
  z-index: 1;
}
.success-stamp-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}
.success-stamp {
  border: 2px solid var(--brand-dark);
  color: var(--brand-dark);
  padding: 8px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  transform: rotate(-3deg);
  background: #eef3fc;
  position: relative;
}
.success-stamp::after {
  content: "";
  position: absolute; inset: -3px;
  border: 1px solid var(--brand);
  opacity: 0.45;
}
.success-ref {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}
.success h1 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(2.6rem, 5.5vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin-bottom: 22px;
}
.success h1 em { font-style: italic; color: var(--accent); }
.success-lead {
  font-size: 1rem;
  color: var(--ink-2);
  margin-bottom: 48px;
  max-width: 52ch;
}
.success-lead b { color: var(--ink); }

.steps {
  border-top: 2px solid var(--ink);
  border-left: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
}
.step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 28px 24px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  align-items: start;
}
.step:nth-child(even) { background: var(--paper-3); }
.step-num {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 3.5rem;
  line-height: 0.85;
  color: var(--accent);
}
.step h3 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.1;
  margin-bottom: 8px;
}
.step h3 em { font-style: italic; }
.step p {
  color: var(--ink-2);
  font-size: 0.9rem;
  margin-bottom: 8px;
  max-width: 56ch;
}
.step ul { padding-left: 24px; font-size: 0.9rem; color: var(--ink-2); margin-top: 6px; }
.step ul li { margin-bottom: 4px; padding-left: 4px; }
.step ul li::marker { color: var(--accent); content: "— "; }
.step code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--paper-3);
  border: 1px solid var(--ink-3);
  padding: 1px 6px;
  font-size: 0.85em;
  color: var(--ink);
}

.success-help {
  margin-top: 40px;
  padding: 20px 24px;
  border: 1px dashed var(--ink-3);
  font-size: 0.86rem;
  color: var(--ink-2);
  text-align: center;
}

.success-back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 12px 20px;
  border: 2px solid var(--ink);
  transition: all 0.12s;
}
.success-back:hover { background: var(--ink); color: var(--paper); }

/* ═════════ RESPONSIVE ═════════ */

@media (max-width: 900px) {
  .dochead-meta { display: none; }
  .dochead-inner { padding: 12px 20px; gap: 14px; grid-template-columns: auto auto; }

  .doc { padding: 40px 20px 64px; }
  .doc-head { grid-template-columns: 1fr; gap: 16px; }
  .doc-head .stamp { text-align: left; }

  .callout { grid-template-columns: 1fr; gap: 10px; }
  .callout::before { width: fit-content; }

  .doc table { font-size: 0.78rem; }
  .doc th, .doc td { padding: 8px 10px; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { grid-template-columns: 1fr; text-align: center; }
  .footer-bottom .right, .footer-bottom .center { text-align: center; }

  .success { padding: 40px 20px 64px; }
  .step { grid-template-columns: 1fr; gap: 10px; padding: 24px 20px; }
  .step-num { font-size: 2.6rem; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .doc-sign { grid-template-columns: 1fr; text-align: center; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}