:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e8e9ec;
  --text-dim: #9aa0ad;
  --accent: #5b8cff;
  --accent-2: #3b6fe0;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent); }

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

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(15, 17, 21, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}
.brand .lock { font-size: 1.2rem; }
.brand .logo-mark { width: 28px; height: 28px; border-radius: 7px; display: block; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.lang-switch {
  display: flex;
  gap: 0.4rem;
  font-size: 0.85rem;
}
.lang-switch a {
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-dim);
  border: 1px solid transparent;
}
.lang-switch a[aria-current="true"] {
  color: var(--text);
  border-color: var(--border);
  background: var(--panel-2);
}

.lang-select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  max-width: 9rem;
}
.header-actions { flex-wrap: wrap; justify-content: flex-end; gap: 0.6rem; }
.site-header .container { flex-wrap: wrap; gap: 0.5rem; }

.footer-langs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 0.8rem;
  margin: 0.8rem 0;
  font-size: 0.8rem;
}
.footer-langs a { color: var(--text-dim); text-decoration: none; }
.footer-langs a:hover { text-decoration: underline; }
.footer-langs a[aria-current="true"] { color: var(--text); font-weight: 600; }

/* MANUALE / PAGINE LEGALI */
.manual main { max-width: 760px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.manual h2 { margin: 2.2rem 0 0.7rem; }
.manual h3 { margin: 1.4rem 0 0.4rem; }
.manual ol, .manual ul { padding-inline-start: 1.3rem; }
.manual li { margin: 0.35rem 0; }
.manual .toc {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.manual .warn {
  border-inline-start: 4px solid #f5a524;
  background: rgba(245, 165, 36, 0.08);
  padding: 0.7rem 1rem;
  border-radius: 6px;
  margin: 1rem 0;
}
[dir="rtl"] body { text-align: start; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { background: var(--panel-2); }
.btn-sm { padding: 0.45rem 0.9rem; font-size: 0.85rem; }

/* HERO */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}
.badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 0 0 1rem;
  line-height: 1.15;
}
.hero p.lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 2.2rem;
}
.hero-actions {
  display: flex;
  gap: 0.9rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* FEATURES */
.features {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}
.features h2, .how h2, .disclaimer h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  text-align: center;
  margin: 0 0 2.5rem;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.feature-card .icon { font-size: 1.6rem; margin-bottom: 0.6rem; }
.feature-card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.feature-card p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }

/* HOW IT WORKS */
.how {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 2.2rem;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}
.step h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.step p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }

/* DISCLAIMER */
.disclaimer {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}
.disclaimer-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  max-width: 760px;
  margin: 0 auto;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.disclaimer-box strong { color: var(--text); }

/* CTA */
.cta {
  padding: 4rem 0 5rem;
  text-align: center;
  border-top: 1px solid var(--border);
}
.cta h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin: 0 0 1rem; }
.cta p { color: var(--text-dim); margin: 0 0 1.75rem; }

/* FOOTER */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}
.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.footer-links a { color: var(--text-dim); text-decoration: none; }
.footer-links a:hover { color: var(--text); text-decoration: underline; }
.powered-by { margin: 0; }
.powered-by a { color: var(--text-dim); }

/* LEGAL PAGES */
.legal {
  padding: 3rem 0 4rem;
  max-width: 760px;
  margin: 0 auto;
}
.legal h1 { font-size: 1.8rem; }
.legal h2 { font-size: 1.2rem; margin-top: 2rem; }
.legal p, .legal li { color: var(--text-dim); font-size: 0.95rem; }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  background: #11141a;
  border-top: 1px solid var(--border);
  padding: 1.1rem 0;
}
.cookie-banner-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}
.cookie-banner-text {
  margin: 0;
  flex: 1 1 320px;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.cookie-banner-text a { color: var(--text); }
.cookie-banner-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.cookie-banner-actions button {
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
}
.cookie-banner-actions button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 3.5rem 0 2.5rem; }
  .site-footer .container { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 375px) {
  .container { padding: 0 1rem; }
}

/* DEMO */
.demo-layout { display: grid; grid-template-columns: 1fr minmax(300px, 360px); gap: 2rem; align-items: start; max-width: 960px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.demo-intro h1 { margin-top: 0; }
.demo-notice { background: var(--panel-2); border: 1px solid var(--border); border-inline-start: 4px solid #f5a524; border-radius: 8px; padding: 0.7rem 1rem; margin: 1rem 0; font-size: 0.92rem; }
.demo-try li { margin: 0.5rem 0; }
.phone { background: #0b0d11; border: 2px solid var(--border); border-radius: 28px; height: 600px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 10px 40px rgba(0,0,0,.45); position: relative; }
.phone input, .phone select { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 0.55rem 0.7rem; font-size: 0.95rem; }
.ph-login { display: flex; flex-direction: column; gap: 0.7rem; justify-content: center; height: 100%; padding: 1.5rem; text-align: center; }
.ph-logo { font-size: 2.6rem; }
.ph-err { color: #ff7b7b; min-height: 1.2em; font-size: 0.85rem; margin: 0; }
.ph-bar { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); }
.ph-icon { background: none; border: 1px solid var(--border); color: var(--text-dim); border-radius: 8px; padding: 0.25rem 0.55rem; cursor: pointer; font-size: 0.8rem; }
.ph-search { margin: 0.7rem 1rem; }
.ph-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.ph-chat { width: 100%; display: flex; gap: 0.7rem; align-items: center; padding: 0.7rem 1rem; background: none; border: 0; border-bottom: 1px solid var(--border); color: var(--text); text-align: start; cursor: pointer; }
.ph-chat:hover { background: var(--panel-2); }
.ph-av { width: 38px; height: 38px; border-radius: 50%; background: var(--accent); display: grid; place-items: center; font-weight: 700; flex: none; }
.ph-ct { display: flex; flex-direction: column; min-width: 0; }
.ph-ct small { color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ph-tag { font-size: 0.7rem; color: #f5a524; font-style: normal; }
.ph-empty { padding: 1.5rem; text-align: center; color: var(--text-dim); }
.ph-toast { min-height: 1.4em; text-align: center; font-size: 0.8rem; color: #6fe3a1; padding-bottom: 0.5rem; }
.ph-sub { display: flex; justify-content: space-between; gap: 0.5rem; font-size: 0.72rem; color: var(--text-dim); padding: 0.4rem 1rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.ph-msgs { flex: 1; overflow-y: auto; padding: 0.8rem; display: flex; flex-direction: column; gap: 0.5rem; }
.ph-msg { max-width: 82%; padding: 0.5rem 0.75rem; border-radius: 14px; word-break: break-word; font-size: 0.92rem; }
.ph-msg.me { align-self: flex-end; background: var(--accent); color: #fff; }
.ph-msg.them { align-self: flex-start; background: var(--panel-2); }
.ph-msg.cipher span { font-family: ui-monospace, Menlo, monospace; font-size: 0.7rem; opacity: .85; }
.ph-exp { display: block; font-size: 0.68rem; opacity: .8; margin-top: 0.2rem; }
.ph-form { display: flex; gap: 0.4rem; padding: 0.6rem; border-top: 1px solid var(--border); }
.ph-form input[type=text] { flex: 1; min-width: 0; }
.ph-form select { max-width: 6.5rem; font-size: 0.8rem; }
@media (max-width: 800px) { .demo-layout { grid-template-columns: 1fr; } .phone { height: 560px; } }

/* Sezione sicurezza (punto di forza) */
.features.security { background: linear-gradient(180deg, rgba(79,140,255,.08), rgba(79,140,255,0)); border-top: 1px solid rgba(127,127,127,.2); }
.sec-lead { text-align: center; max-width: 46rem; margin: 0 auto 1.5rem; opacity: .85; }

/* ---- Demo: cassaforte ---- */
.ph-nav { display: flex; border-top: 1px solid var(--border); margin-top: auto; }
.ph-nav button { flex: 1; padding: .6rem .4rem; background: transparent; border: 0; color: var(--text-dim); cursor: pointer; font: inherit; font-size: .85rem; }
.ph-nav button.on { color: var(--accent); font-weight: 700; }
.ph-tabs { display: flex; flex-wrap: wrap; gap: .3rem; padding: .5rem; }
.ph-tabs button { padding: .3rem .6rem; border-radius: 999px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); cursor: pointer; font-size: .75rem; }
.ph-tabs button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.ph-vbody { padding: .6rem; display: flex; flex-direction: column; gap: .5rem; overflow: auto; flex: 1; font-size: .85rem; }
.ph-vlist { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.ph-vlist li { display: flex; flex-direction: column; gap: .15rem; padding: .45rem .55rem; border: 1px solid var(--border); border-radius: 10px; background: var(--panel-2); }
.ph-cipher { word-break: break-all; color: var(--text-dim); }
.ph-pw { display: flex; align-items: center; justify-content: space-between; gap: .4rem; word-break: break-all; }
.ph-meter { height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.ph-meter i { display: block; height: 100%; background: linear-gradient(90deg, #e05c5c, #e0a85c, #5ad19a); transition: width .3s; }
.ph-link { word-break: break-all; padding: .5rem; border: 1px dashed var(--border); border-radius: 8px; font-family: monospace; font-size: .75rem; }
.ph-code { font-size: 1.4rem; font-weight: 700; letter-spacing: .25rem; }
.ph-note { color: var(--text-dim); font-size: .75rem; }
.ph-chk { width: 100%; text-align: start; background: transparent; border: 0; color: var(--text); cursor: pointer; font: inherit; }
.logo-mark { flex: none; }