/* ============================================================================
   DieteticAI — landing vetrina
   Stesso design system dell'app (public/css/app.css): dark-first, superfici a
   livelli + hairline, micro-label in caps, accenti azzurro/rosa.
   Riferimenti reali: design system del prodotto (app.css) +
   Beautiful UI — task rows / streaming / recommendation card (beautifului.dev)
   per la sezione "come funziona" e il blocco prezzo.
   Nessuna dipendenza esterna, nessun build step.
   ========================================================================== */

.lp-shell { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- Topbar ---------- */
.lp-top {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.lp-top .lp-shell {
  display: flex; align-items: center; gap: 18px;
  min-height: 64px;
}
.lp-brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 680; letter-spacing: -0.01em; color: var(--fg);
  text-decoration: none; font-size: 17px;
}
.lp-brand img { display: block; }
.lp-nav { display: flex; gap: 4px; margin-left: auto; }
.lp-nav a {
  color: var(--fg-2); text-decoration: none; font-size: var(--fs-sm, 14px);
  padding: 9px 12px; border-radius: var(--r-sm, 11px); min-height: 40px;
  display: inline-flex; align-items: center;
}
.lp-nav a:hover { color: var(--fg); background: var(--surface-3); }
.lp-cta {
  display: inline-flex; align-items: center; min-height: 42px; padding: 0 16px;
  border-radius: var(--r-sm, 11px); text-decoration: none; font-weight: 640;
  font-size: var(--fs-sm, 14px);
}
.lp-cta--primary { background: var(--accent); color: var(--accent-ink); }
.lp-cta--primary:hover { filter: brightness(1.07); }
.lp-cta--ghost { border: 1px solid var(--line-strong); color: var(--fg); }
.lp-nav-toggle {
  display: none; margin-left: auto; min-height: 42px; min-width: 42px;
  background: transparent; color: var(--fg); border: 1px solid var(--line-strong);
  border-radius: var(--r-sm, 11px); font-size: 18px; cursor: pointer;
}

/* ---------- Hero ---------- */
.lp-hero { padding: 56px 0 40px; }
.lp-hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 48px; align-items: center;
}
.lp-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-strong); font-weight: 640;
  border: 1px solid var(--accent-line); border-radius: 999px;
  padding: 6px 12px; background: var(--accent-soft);
}
.lp-h1 {
  font-size: clamp(32px, 5.2vw, 54px); line-height: 1.05;
  letter-spacing: -0.028em; margin: 20px 0 0; font-weight: 700;
}
.lp-h1 em { font-style: normal; color: var(--accent-strong); }
.lp-sub {
  margin: 18px 0 0; color: var(--fg-2); font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.62; max-width: 54ch;
}
.lp-cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.lp-cta-row .lp-cta { min-height: 50px; padding: 0 22px; font-size: 15px; }
.lp-hero-note {
  margin-top: 18px; font-size: var(--fs-xs, 13px); color: var(--fg-3);
  display: flex; gap: 8px; align-items: flex-start; max-width: 52ch;
}

/* ---------- Orb ---------- */
.lp-orb-stage {
  position: relative; display: grid; place-items: center;
  min-height: 380px;
  /* min-width:0 + max-width:100%: un grid item non deve poter imporre al
     contenitore la larghezza intrinseca del canvas (520px) — era la causa
     dello scroll orizzontale su mobile (bug 2026-09-13). */
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
}
.lp-orb-stage .orb-area {
  border: 1px solid var(--line); border-radius: var(--r-xl, 30px);
  background: var(--surface-2); padding: 8px; width: 100%; max-width: 100%;
  box-sizing: border-box;
  display: grid; place-items: center; overflow: hidden;
}
.lp-orb-stage .orb-canvas { width: 100%; height: auto; max-width: 100%; display: block; }
.lp-orb-state {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-2); background: var(--surface-solid);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px;
}
.lp-orb-legend {
  position: absolute; top: 18px; right: 18px; display: grid; gap: 6px;
  font-size: 11px; color: var(--fg-3); text-align: right;
}

/* ---------- Sezioni ---------- */
.lp-section { padding: 56px 0; border-top: 1px solid var(--line); }
.lp-section-head { max-width: 62ch; margin-bottom: 32px; }
.lp-kicker {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--fg-3); font-weight: 640;
}
.lp-h2 {
  font-size: clamp(23px, 3vw, 32px); line-height: 1.2; margin: 10px 0 0;
  letter-spacing: -0.02em; font-weight: 680;
}
.lp-lead { color: var(--fg-2); margin: 12px 0 0; line-height: 1.65; }

.lp-grid { display: grid; gap: 16px; }
.lp-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lp-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lp-card {
  border: 1px solid var(--line); border-radius: var(--r-lg, 22px);
  background: var(--surface-1); padding: 22px;
}
.lp-card h3 { margin: 14px 0 8px; font-size: 17px; letter-spacing: -0.01em; }
.lp-card p { margin: 0; color: var(--fg-2); line-height: 1.6; font-size: var(--fs-sm, 14px); }
.lp-card .lp-ico {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-strong); font-size: 18px;
}

/* ---------- Task rows (riferimento Beautiful UI) ---------- */
.lp-steps { display: grid; gap: 10px; counter-reset: step; }
.lp-step {
  display: grid; grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 14px; align-items: center;
  border: 1px solid var(--line); border-radius: var(--r-md, 15px);
  background: var(--surface-2); padding: 14px 16px;
}
.lp-step-n {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); font-weight: 700; font-size: 13px;
}
.lp-step-b strong { display: block; font-size: 14.5px; margin-bottom: 3px; }
.lp-step-b span { color: var(--fg-2); font-size: var(--fs-sm, 14px); line-height: 1.55; }
.lp-step-tag {
  font-size: 11px; color: var(--fg-3); border: 1px solid var(--line);
  border-radius: 999px; padding: 4px 10px; white-space: nowrap;
}

/* ---------- Disclaimer ---------- */
.lp-disclaimer {
  border: 1px solid var(--accent-line);
  border-left-width: 3px;
  border-radius: var(--r-md, 15px);
  background: var(--accent-soft);
  padding: 18px 20px; margin: 0;
  color: var(--fg); line-height: 1.62; font-size: var(--fs-sm, 14px);
}
/* Solo il TITOLO del riquadro va a capo: prima la regola colpiva ogni <strong>,
   spezzando le frasi a metà riga (bug 2026-09-13, segnalato da Francesco). */
.lp-disclaimer-title { display: block; margin-bottom: 6px; font-size: 14.5px; }

/* ---------- Prezzo ---------- */
.lp-price-card {
  border: 1px solid var(--line-strong); border-radius: var(--r-xl, 30px);
  background: var(--surface-1); padding: 28px; display: grid; gap: 16px;
  max-width: 520px;
}
.lp-price-value { font-size: 42px; font-weight: 720; letter-spacing: -0.03em; line-height: 1; }
.lp-price-value small { font-size: 15px; font-weight: 500; color: var(--fg-2); margin-left: 6px; }
.lp-price-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.lp-price-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--fg-2); font-size: var(--fs-sm, 14px); line-height: 1.5; }
.lp-price-list li::before { content: '\2713'; color: var(--ok); font-weight: 700; }
.lp-price-list li.no::before { content: '\2014'; color: var(--fg-3); }

/* ---------- FAQ ---------- */
.lp-faq { display: grid; gap: 10px; }
.lp-faq details {
  border: 1px solid var(--line); border-radius: var(--r-md, 15px);
  background: var(--surface-2); padding: 4px 18px;
}
.lp-faq summary {
  cursor: pointer; list-style: none; min-height: 52px; display: flex; align-items: center;
  font-weight: 620; font-size: 15px;
}
.lp-faq summary::-webkit-details-marker { display: none; }
.lp-faq summary::after { content: '+'; margin-left: auto; color: var(--fg-3); font-size: 18px; }
.lp-faq details[open] summary::after { content: '\2212'; }
.lp-faq details p { margin: 0 0 16px; color: var(--fg-2); line-height: 1.65; font-size: var(--fs-sm, 14px); }

/* ---------- Form ---------- */
.lp-form { display: grid; gap: 14px; max-width: 520px; }
.lp-field { display: grid; gap: 6px; }
.lp-field label { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); font-weight: 620; }
.lp-field input, .lp-field textarea {
  min-height: 48px; padding: 12px 14px; border-radius: var(--r-sm, 11px);
  border: 1px solid var(--line-strong); background: var(--surface-2);
  color: var(--fg); font: inherit; font-size: 15px; width: 100%;
}
.lp-field textarea { min-height: 110px; resize: vertical; }
.lp-field input:focus-visible, .lp-field textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
.lp-msg { min-height: 22px; font-size: var(--fs-sm, 14px); }
.lp-msg.err { color: var(--danger); }
.lp-msg.ok { color: var(--ok); }

/* ---------- Footer ---------- */
.lp-foot {
  border-top: 1px solid var(--line); margin-top: 40px; padding: 36px 0 56px;
}
.lp-foot-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(0, 1fr)); gap: 28px; }
.lp-foot h4 { margin: 0 0 12px; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-3); }
.lp-foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.lp-foot a { color: var(--fg-2); text-decoration: none; font-size: var(--fs-sm, 14px); min-height: 40px; display: inline-flex; align-items: center; }
.lp-foot a:hover { color: var(--fg); text-decoration: underline; }
.lp-foot-note { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--fg-3); font-size: var(--fs-xs, 13px); line-height: 1.6; }

/* ---------- Reveal ---------- */
.lp-reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.lp-reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .lp-reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .lp-hero-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .lp-orb-stage { min-height: 300px; order: -1; }
  .lp-grid--3, .lp-grid--2 { grid-template-columns: minmax(0, 1fr); }
  .lp-foot-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
}
@media (max-width: 760px) {
  .lp-nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .lp-nav {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; gap: 2px; padding: 10px 20px 16px;
    background: var(--surface-solid); border-bottom: 1px solid var(--line);
  }
  .lp-nav.is-open { display: flex; }
  .lp-nav a { min-height: 48px; }
  .lp-top .lp-cta--primary { display: none; }
  .lp-step { grid-template-columns: 30px minmax(0, 1fr); }
  .lp-step-tag { grid-column: 2; justify-self: start; }
}

/* ---------- Selettore importo (sostegno al progetto) ---------- */
.lp-amount {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.lp-amount-chip {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; min-height: 54px; min-width: 84px; padding: 6px 14px;
  border-radius: var(--r-md, 15px); border: 1px solid var(--line-strong);
  background: var(--surface-2); color: var(--fg); cursor: pointer;
  font: 640 15px/1.1 inherit; transition: border-color .15s ease, background .15s ease;
}
.lp-amount-chip span {
  font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--fg-3); font-weight: 620;
}
.lp-amount-chip:hover { background: var(--surface-3); }
.lp-amount-chip.is-active {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent-strong);
}
.lp-amount-chip.is-active span { color: var(--accent-strong); }
.lp-amount-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lp-hint { font-size: 12px; color: var(--fg-3); }
@media (max-width: 420px) {
  .lp-amount-chip { min-width: 0; flex: 1 1 30%; }
}