/* ForensicTracks — foglio di stile unico, senza dipendenze esterne */

:root {
  --ink: #15181e;
  --ink-2: #232832;
  --paper: #f7f6f3;
  --card: #ffffff;
  --text: #1c2027;
  --muted: #5d6471;
  --line: #e0ded8;
  --red: #c21f2c;
  --red-soft: #f6e3e4;
  --radius: 14px;
  --wrap: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101318;
    --card: #181c23;
    --text: #e8e9ec;
    --muted: #a0a7b3;
    --line: #2a2f39;
    --red: #e0414d;
    --red-soft: #2b1619;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--red); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* ---------- intestazione ---------- */

.top {
  background: var(--ink);
  color: #fff;
  border-bottom: 3px solid var(--red);
}
.top .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 64px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .2px;
  font-size: 19px;
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #fff;
}
.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
  flex-wrap: wrap;
}
.nav a {
  color: #cfd3da;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 15px;
}
.nav a:hover { color: #fff; background: var(--ink-2); }
.nav a[aria-current="page"] { color: #fff; background: var(--ink-2); }
.nav .lang {
  border: 1px solid #3a404c;
  font-weight: 600;
  letter-spacing: .5px;
}

/* ---------- apertura ---------- */

.hero {
  background:
    radial-gradient(circle at 85% 30%, rgba(194, 31, 44, .28), transparent 42%),
    radial-gradient(circle at 10% 90%, rgba(255, 255, 255, .06), transparent 40%),
    var(--ink);
  color: #fff;
  padding: 72px 0 80px;
}
.hero .eyebrow {
  color: #ff8a93;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: -.5px;
}
.hero p.lead {
  font-size: clamp(17px, 2.2vw, 20px);
  color: #c9ced6;
  max-width: 640px;
  margin: 0;
}
.hero .actions { margin-top: 30px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  font-size: 16px;
}
.btn.primary { background: var(--red); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { color: #fff; border: 1px solid #4a515e; }
.btn.ghost:hover { background: var(--ink-2); }

/* ---------- sezioni ---------- */

section { padding: 64px 0; }
section + section { border-top: 1px solid var(--line); }

h2 {
  font-size: clamp(26px, 3.6vw, 34px);
  line-height: 1.2;
  margin: 0 0 12px;
  letter-spacing: -.3px;
}
h3 { font-size: 20px; margin: 0 0 8px; line-height: 1.3; }
.sub { color: var(--muted); max-width: 680px; margin: 0 0 32px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card p { margin: 0; color: var(--muted); }
.card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--red);
  background: var(--red-soft);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.feature {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.feature img { width: 160px; border-radius: 34px; }
.feature p { color: var(--muted); margin: 0 0 16px; }
.feature .btn.primary { margin-right: 8px; }
.feature .link { font-weight: 600; }

/* ---------- pagina AR BPA ---------- */

.steps { display: grid; gap: 44px; }
.step {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 30px;
  align-items: center;
}
.step:nth-child(even) { grid-template-columns: 1fr 1.25fr; }
.step:nth-child(even) .shot { order: 2; }
.step .shot img {
  max-height: 560px;
  width: auto;
  margin: 0 auto;
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .12);
}
.step .n {
  display: inline-block;
  font-weight: 700;
  color: var(--red);
  font-size: 14px;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.step p { margin: 0 0 10px; color: var(--muted); }

.formula {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  border-radius: 10px;
  padding: 12px 16px;
  margin: 8px 0 12px;
  color: var(--text);
}

.note {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  color: var(--muted);
  font-size: 15px;
}
.note h3 { color: var(--text); }

/* ---------- testo lungo (chi siamo, privacy) ---------- */

.prose { max-width: 720px; }
.prose h2 { margin-top: 40px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--text); }
.prose ul { padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose .meta { color: var(--muted); font-size: 15px; }
.figure { margin: 32px 0; }
.figure img { border-radius: var(--radius); }

.quote {
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.4;
  max-width: 760px;
  margin: 0;
  font-style: italic;
}
.quote cite {
  display: block;
  margin-top: 12px;
  font-size: 15px;
  font-style: normal;
  color: var(--muted);
}

/* ---------- piè di pagina ---------- */

.foot {
  background: var(--ink);
  color: #aab0bb;
  padding: 32px 0;
  font-size: 15px;
}
.foot .wrap {
  display: flex;
  gap: 16px 28px;
  flex-wrap: wrap;
  align-items: center;
}
.foot a { color: #e3e6ea; }
.foot .spacer { margin-left: auto; }

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

@media (max-width: 760px) {
  .hero { padding: 48px 0 56px; }
  section { padding: 44px 0; }
  .feature { grid-template-columns: 1fr; text-align: left; }
  .feature img { width: 112px; border-radius: 26px; }
  .step, .step:nth-child(even) { grid-template-columns: 1fr; gap: 16px; }
  .step:nth-child(even) .shot { order: 0; }
  .nav { margin-left: 0; width: 100%; padding-bottom: 10px; }
  .nav a { padding: 6px 10px; }
  .foot .spacer { margin-left: 0; }
}