/* vtrade.it — foglio di stile unico per tutto il sito.
   Palette campionata dal logo (web/logo.png) e allineata a web/style.css. */

:root {
  --bg: #0e1013;
  --panel: #15181d;
  --panel-2: #1b1f26;
  --border: #262b34;
  --border-hi: #333a46;

  --text: #e6e9ef;
  --text-strong: #ffffff;
  --subtext: #99a1ae;
  --muted: #7b8493;

  --blue: #4560e6;      /* fondo dei bottoni: bianco sopra fa 5,2:1 */
  --blue-hi: #6a86f7;   /* link su fondo scuro: 5,8:1 */
  --blue-dk: #3a53d8;   /* passaggio del mouse: scurisce, non schiarisce */
  --teal: #1fa896;
  --green: #3cb87a;
  --orange: #f0703c;

  --radius: 14px;
  --maxw: 1080px;
  --gutter: 20px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ── Lingua: senza JS si vede l'inglese ─────────────────────────────── */
/* Si accende su data-l, NON su lang: lo script scrive lang anche su <html>,
   e un selettore [lang="it"] farebbe sparire la pagina intera. */
[data-l="it"] { display: none; }
html.it [data-l="it"] { display: revert; }
html.it [data-l="en"] { display: none; }

a { color: var(--blue-hi); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { color: var(--text-strong); line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(30px, 5.2vw, 46px); letter-spacing: -.02em; }
h2 { font-size: clamp(23px, 3.4vw, 30px); letter-spacing: -.01em; }
h3 { font-size: 17px; }
p { margin: 0 0 1em; }

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

/* ── Barra in alto ──────────────────────────────────────────────────── */
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(14, 16, 19, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.top .wrap {
  display: flex; align-items: center; gap: 18px;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand img { height: 30px; width: auto; display: block; }
.brand span { font-weight: 600; color: var(--text-strong); font-size: 17px; }

.nav { display: flex; gap: 20px; align-items: center; }
.nav a { color: var(--subtext); font-size: 14.5px; }
.nav a:hover { color: var(--text-strong); text-decoration: none; }

.lang {
  display: inline-flex; border: 1px solid var(--border-hi);
  border-radius: 999px; overflow: hidden; flex: none;
}
.lang button {
  background: none; border: 0; color: var(--subtext);
  font: inherit; font-size: 12.5px; font-weight: 600;
  padding: 5px 11px; cursor: pointer; letter-spacing: .04em;
}
.lang button[aria-pressed="true"] { background: var(--blue); color: #fff; }

/* ── Bottoni ────────────────────────────────────────────────────────── */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dk); text-decoration: none; }
.btn-ghost { border-color: var(--border-hi); color: var(--text); }
.btn-ghost:hover { border-color: var(--subtext); text-decoration: none; }

/* ── Hero ───────────────────────────────────────────────────────────── */
.hero { padding: 80px 0 60px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% 30% 40% -10%;
  background: radial-gradient(closest-side, rgba(80,112,240,.16), transparent);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.eyebrow {
  display: inline-block; font-size: 12.5px; font-weight: 600;
  letter-spacing: .09em; text-transform: uppercase;
  color: var(--teal); border: 1px solid rgba(31,168,150,.4);
  border-radius: 999px; padding: 4px 12px; margin-bottom: 20px;
}
.hero p.lede {
  font-size: clamp(17px, 2.2vw, 19.5px); color: var(--subtext);
  max-width: 62ch; margin-bottom: 28px;
}
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .note { margin-top: 22px; font-size: 14px; color: var(--muted); }

/* ── Schermate ──────────────────────────────────────────────────────── */
/* width/height stanno anche sul tag: senza, la pagina salta quando
   l'immagine arriva, e il salto si vede proprio sulla prima schermata. */
.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--border-hi); border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 18px 46px rgba(0, 0, 0, .45);
}
.shot figcaption {
  margin-top: 12px; color: var(--muted); font-size: 13.5px;
  line-height: 1.55;
}
.shot figcaption strong { color: var(--subtext); }
.hero-shot { margin-top: 48px; }
/* Una colonna sola, sempre. Affiancate stavano a 455px: la schermata di
   un'app larga 1440 ridotta a un terzo non si legge piu', e una schermata
   che non si legge non mostra niente. */
.shots { display: grid; gap: 40px; }

/* ── Sezioni ────────────────────────────────────────────────────────── */
section { padding: 62px 0; border-top: 1px solid var(--border); }
section > .wrap > p.intro {
  color: var(--subtext); max-width: 64ch; margin-bottom: 34px;
}

.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  min-width: 0;
}
.card h3 { margin-bottom: .45em; display: flex; align-items: center; gap: 9px; }
.card h3 .dot {
  width: 9px; height: 9px; border-radius: 3px; flex: none;
  background: var(--blue);
}
.card p { color: var(--subtext); font-size: 14.5px; margin: 0; }
.card .dot.t { background: var(--teal); }
.card .dot.g { background: var(--green); }
.card .dot.o { background: var(--orange); }

/* ── Piattaforme ────────────────────────────────────────────────────── */
.plat { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.plat .card { display: flex; flex-direction: column; gap: 8px; }
.tag {
  align-self: flex-start; font-size: 11.5px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 6px;
  background: rgba(60,184,122,.14); color: var(--green);
  border: 1px solid rgba(60,184,122,.3);
}
.tag.b { background: rgba(80,112,240,.14); color: var(--blue-hi); border-color: rgba(80,112,240,.32); }

/* ── Riquadro evidenziato ───────────────────────────────────────────── */
.box {
  background: var(--panel-2); border: 1px solid var(--border-hi);
  border-radius: var(--radius); padding: 26px;
}
.box h3 { margin-top: 0; }
ul.clean { list-style: none; margin: 0; padding: 0; }
ul.clean li {
  position: relative; padding-left: 26px; margin-bottom: 10px;
  color: var(--subtext); font-size: 15px;
}
ul.clean li::before {
  content: ""; position: absolute; left: 6px; top: 9px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--teal);
}
ul.clean.no li::before { background: var(--orange); }

/* ── Utilita' ───────────────────────────────────────────────────────── */
/* Classi al posto degli attributi style=, cosi' il CSP puo' restare
   stretto: style-src 'self' blocca anche lo stile scritto sul tag. */
.mt { margin-top: 26px; }
.sub { color: var(--subtext); font-size: 15px; }
.sub.flush { margin-bottom: 0; }
.sub.spaced { margin-top: 22px; }
.intro.tight { margin-bottom: 18px; }
.brand.stack { margin: 0 0 10px; }
.foot-blurb { color: var(--muted); font-size: 14px; margin: 0; max-width: 34ch; }

/* ── Avviso sul rischio ─────────────────────────────────────────────── */
.risk {
  border-top: 1px solid var(--border);
  background: #121316;
  padding: 26px 0;
  font-size: 13.5px; color: var(--muted);
}
.risk strong { color: var(--subtext); }

/* ── Piede ──────────────────────────────────────────────────────────── */
footer { border-top: 1px solid var(--border); padding: 34px 0 48px; }
footer .cols {
  display: flex; flex-wrap: wrap; gap: 28px 48px;
  justify-content: space-between; align-items: flex-start;
}
footer a { color: var(--subtext); font-size: 14.5px; }
footer a:hover { color: var(--text-strong); }
footer .links { display: flex; flex-direction: column; gap: 8px; }
footer .copy { color: var(--muted); font-size: 13.5px; margin-top: 26px; }

/* ── Pagine legali ──────────────────────────────────────────────────── */
.doc { padding: 52px 0 20px; }
.doc .wrap { max-width: 760px; }
.doc h2 { font-size: 21px; margin-top: 2em; }
.doc h2:first-of-type { margin-top: 1em; }
.doc p, .doc li { color: var(--text); font-size: 15.5px; }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: .5em; }
.doc .updated { color: var(--muted); font-size: 14px; margin-bottom: 2em; }
.doc .prevale {
  margin-top: 46px; padding: 16px 18px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--muted); font-size: 13.5px;
}
.doc table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 14.5px; }
.doc th, .doc td {
  text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.doc th { color: var(--text-strong); font-weight: 600; }
.doc td { color: var(--subtext); }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9em; background: var(--panel-2); padding: 1px 5px;
  border-radius: 5px; border: 1px solid var(--border);
}

/* ── Telefono ───────────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .nav { display: none; }
  .hero { padding: 54px 0 40px; }
  section { padding: 46px 0; }
  .brand span { display: none; }
}
