/* GrandinAlert — landing page.
   La palette è la stessa di src/types/index.ts (TEMA + COLORI_RISCHIO): se cambia
   là, va cambiata qui, così app e sito restano lo stesso prodotto. */

:root {
  --sfondo: #0F1117;
  --card: #1A1D27;
  --card-chiara: #242736;
  --testo: #FFFFFF;
  --testo-2: #9CA3AF;
  --bordo: #2D3140;
  --accento: #3B82F6;
  --verde: #4ADE80;
  --giallo: #FACC15;
  --arancione: #FB923C;
  --rosso: #EF4444;
  --viola: #A855F7;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --max: 1160px;
  --font: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto,
          'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--sfondo);
  color: var(--testo);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* Alone luminoso di sfondo: le due sorgenti richiamano l'accento blu dell'app
   e l'arancione dei banner di allerta. */
.sfondo-aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60rem 40rem at 78% -8%, rgba(59, 130, 246, 0.20), transparent 65%),
    radial-gradient(45rem 35rem at 8% 12%, rgba(168, 85, 247, 0.13), transparent 62%),
    radial-gradient(40rem 30rem at 50% 108%, rgba(251, 146, 60, 0.10), transparent 60%);
}

/* ── NAV ─────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-fissa {
  background: rgba(15, 17, 23, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--bordo);
}
.nav__brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.logo { width: 34px; height: 34px; flex-shrink: 0; }
.nav__nome { font-size: 18px; font-weight: 800; letter-spacing: -0.02em; }
.nav__nome-accento { color: var(--arancione); }

.nav__link { display: flex; gap: 28px; }
.nav__link a {
  font-size: 14px;
  color: var(--testo-2);
  position: relative;
  padding: 4px 0;
  transition: color 0.18s ease;
}
.nav__link a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1.5px;
  background: var(--accento);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}
.nav__link a:hover { color: var(--testo); }
.nav__link a:hover::after { transform: scaleX(1); }

/* ── BOTTONI ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease,
              border-color 0.2s ease;
}
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--lg { padding: 16px 32px; font-size: 16px; }

.btn--primario {
  background: linear-gradient(135deg, #5AADFF, var(--accento));
  color: #fff;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.30);
}
.btn--primario:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.42);
}
.btn--fantasma {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--bordo);
  color: var(--testo);
}
.btn--fantasma:hover { border-color: var(--accento); background: rgba(59, 130, 246, 0.10); }
.btn:active { transform: translateY(0); }

.ico { width: 18px; height: 18px; }
.ico-sm { width: 18px; height: 18px; color: var(--testo); }
.ico-xs { width: 12px; height: 12px; color: var(--accento); }

/* ── HERO ────────────────────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 24px 96px;
}

.pillola {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border-radius: 999px;
  background: rgba(74, 222, 128, 0.10);
  border: 1px solid rgba(74, 222, 128, 0.28);
  font-size: 13px;
  color: #A7F3C6;
  margin-bottom: 26px;
}
.pillola__punto {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--verde);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: pulsa 2.1s infinite;
}
@keyframes pulsa {
  70%  { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

.hero__titolo {
  font-size: clamp(2.4rem, 5.4vw, 4rem);
  font-weight: 800;
  margin-bottom: 20px;
}
.grad {
  background: linear-gradient(120deg, #7EC0FF 0%, var(--accento) 45%, var(--viola) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sottotitolo {
  font-size: 17px;
  color: var(--testo-2);
  max-width: 34em;
  margin-bottom: 32px;
}
.hero__azioni { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero__prove { display: flex; gap: 36px; flex-wrap: wrap; }
.hero__prove li { display: flex; flex-direction: column; }
.hero__prove strong {
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(120deg, #fff, #9CC5FF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__prove span { font-size: 13px; color: var(--testo-2); }

/* ── MOCKUP TELEFONO ─────────────────────────────────────────────────────── */
.hero__mockup { position: relative; display: flex; justify-content: center; }
.telefono__bagliore {
  position: absolute;
  inset: 8% 12%;
  z-index: -1;
  background: radial-gradient(closest-side, rgba(59, 130, 246, 0.38), transparent 72%);
  filter: blur(46px);
}
.telefono {
  width: 320px;
  max-width: 100%;
  border-radius: 40px;
  padding: 12px;
  background: linear-gradient(160deg, #2A2E3C, #14161E);
  border: 1px solid var(--bordo);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  animation: fluttua 7s ease-in-out infinite;
}
@keyframes fluttua {
  50% { transform: translateY(-12px); }
}
@media (prefers-reduced-motion: reduce) {
  .telefono { animation: none; }
  html { scroll-behavior: auto; }
}

.telefono__schermo {
  background: var(--sfondo);
  border-radius: 30px;
  padding: 22px 14px 12px;
  position: relative;
  overflow: hidden;
}
.telefono__schermo::before {
  content: '';
  position: absolute;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  width: 78px; height: 5px;
  border-radius: 3px;
  background: #2A2E3C;
}

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  margin: 8px 4px 16px;
}
.app-titolo { font-size: 19px; font-weight: 800; }
.app-posizione {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--testo-2); margin-top: 2px;
}

.app-card {
  background: var(--card);
  border-radius: var(--r-md);
  padding: 12px;
  margin-bottom: 10px;
}
.app-card--radar {
  background: rgba(239, 68, 68, 0.10);
  border: 1px solid rgba(239, 68, 68, 0.36);
}
.app-card--rischio { border: 1px solid rgba(239, 68, 68, 0.28); }
.app-card--promo {
  background: rgba(250, 204, 21, 0.09);
  border: 1px solid rgba(250, 204, 21, 0.28);
  margin-bottom: 0;
}
.app-riga { display: flex; align-items: center; gap: 10px; }
.app-emoji { font-size: 19px; }
.app-banner-titolo { font-size: 11.5px; font-weight: 700; }
.app-banner-sub { font-size: 10px; color: var(--testo-2); line-height: 1.35; }

.app-meteo { display: flex; justify-content: space-between; align-items: flex-start; }
.app-temp { font-size: 36px; font-weight: 200; line-height: 1; }
.app-desc { font-size: 11px; color: var(--testo-2); margin-top: 5px; }
.app-dettagli { display: flex; gap: 10px; font-size: 10px; color: var(--testo-2); margin-top: 7px; }
.app-rischio { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.app-rischio-label {
  font-size: 8.5px; color: var(--testo-2);
  text-transform: uppercase; letter-spacing: 1px;
}
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.6px;
}
.badge--alto { background: rgba(239, 68, 68, 0.18); color: var(--rosso); border: 1px solid rgba(239, 68, 68, 0.4); }
.app-prob { font-size: 20px; font-weight: 800; color: var(--rosso); }

.app-card-titolo { font-size: 11px; font-weight: 700; margin-bottom: 10px; }
.app-grafico {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 4px;
  height: 62px;
}
.app-grafico span {
  flex: 1;
  height: var(--h);
  background: var(--c);
  border-radius: 3px;
  min-height: 4px;
  transform-origin: bottom;
}
/* Animazione opt-in: senza la classe le barre sono già alla loro altezza. */
.app-grafico.anima span { animation: cresci 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards; }
@keyframes cresci { from { transform: scaleY(0); } }

.telefono__tabbar {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px 6px;
  font-size: 9px;
  color: var(--testo-2);
}
.telefono__tabbar .attiva { color: var(--accento); font-weight: 700; }

/* ── SEZIONI ─────────────────────────────────────────────────────────────── */
.sezione { max-width: var(--max); margin: 0 auto; padding: 88px 24px; }
/* Contenuti che stanno meglio su una colonna corta, senza però spostare il
   bordo sinistro rispetto alle altre sezioni. */
.sezione--stretta > .passi { max-width: 880px; }
.sezione--stretta > .cta { max-width: 880px; margin-inline: auto; }

.sezione__intestazione { max-width: 640px; margin-bottom: 48px; }
.occhiello {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accento);
  margin-bottom: 14px;
}
.sezione__intestazione h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 14px;
}
.sezione__intestazione p { color: var(--testo-2); font-size: 16.5px; }

/* ── GRIGLIA FUNZIONI ────────────────────────────────────────────────────── */
.griglia-funzioni {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(288px, 1fr));
  gap: 18px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--bordo);
  border-radius: var(--r-lg);
  padding: 26px;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tinta, var(--accento)), transparent);
  opacity: 0;
  transition: opacity 0.22s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--card-chiara);
  background: var(--card-chiara);
}
.card:hover::before { opacity: 0.7; }
.card__icona {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 14px;
  font-size: 22px;
  margin-bottom: 18px;
  background: color-mix(in srgb, var(--tinta) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--tinta) 32%, transparent);
}
.card h3 { font-size: 17.5px; font-weight: 700; margin-bottom: 9px; }
.card p { color: var(--testo-2); font-size: 14.5px; }
.card em { color: var(--testo); font-style: normal; font-weight: 600; }

/* ── PASSI ───────────────────────────────────────────────────────────────── */
.passi { display: flex; flex-direction: column; gap: 14px; }
.passo {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--bordo);
  border-radius: var(--r-lg);
  padding: 24px 26px;
  transition: border-color 0.22s ease;
}
.passo:hover { border-color: rgba(59, 130, 246, 0.45); }
.passo__numero {
  flex-shrink: 0;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 12px;
  font-weight: 800;
  background: linear-gradient(135deg, #5AADFF, var(--accento));
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.32);
}
.passo h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.passo p { color: var(--testo-2); font-size: 14.5px; }

/* ── SCALA RISCHIO ───────────────────────────────────────────────────────── */
.scala {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}
.scala__voce {
  background: var(--card);
  border: 1px solid var(--bordo);
  border-top: 3px solid var(--tinta);
  border-radius: var(--r-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.scala__punto {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--tinta);
  box-shadow: 0 0 12px var(--tinta);
  margin-bottom: 6px;
}
.scala__voce strong { font-size: 15px; color: var(--tinta); }
.scala__voce span:last-child { font-size: 13px; color: var(--testo-2); line-height: 1.45; }

/* ── PANNELLO SHOP ───────────────────────────────────────────────────────── */
.pannello {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  background: linear-gradient(140deg, var(--card), #171A24);
  border: 1px solid var(--bordo);
  border-radius: 28px;
  padding: 48px;
}
.pannello h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; margin-bottom: 14px; }
.pannello p { color: var(--testo-2); margin-bottom: 22px; }
.lista-spunta { display: flex; flex-direction: column; gap: 10px; }
.lista-spunta li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  color: var(--testo-2);
}
.lista-spunta li::before {
  content: '✓';
  position: absolute;
  left: 0; top: 0;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
  color: var(--verde);
  background: rgba(74, 222, 128, 0.14);
}

.pannello__visual { display: flex; justify-content: center; }
.prodotto {
  width: 100%;
  max-width: 260px;
  background: var(--sfondo);
  border: 1px solid var(--bordo);
  border-radius: var(--r-lg);
  padding: 18px;
  text-align: center;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}
.prodotto__img {
  height: 120px;
  display: grid; place-items: center;
  font-size: 52px;
  background: var(--card-chiara);
  border-radius: var(--r-md);
  margin-bottom: 14px;
}
.prodotto__nome { font-size: 14.5px; font-weight: 700; margin-bottom: 6px; }
.prodotto__stelle { font-size: 12px; color: var(--giallo); margin-bottom: 12px; }
.prodotto__stelle span { color: var(--testo-2); }
.prodotto__prezzi { display: flex; align-items: baseline; justify-content: center; gap: 9px; }
.prodotto__vecchio { font-size: 13px; color: var(--testo-2); text-decoration: line-through; }
.prodotto__nuovo { font-size: 21px; font-weight: 800; color: var(--verde); }
.prodotto__promo {
  margin-top: 12px;
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  color: var(--giallo);
  background: rgba(250, 204, 21, 0.12);
  border: 1px solid rgba(250, 204, 21, 0.3);
}

/* ── CTA ─────────────────────────────────────────────────────────────────── */
.cta {
  text-align: center;
  background:
    radial-gradient(38rem 22rem at 50% 0%, rgba(59, 130, 246, 0.20), transparent 70%),
    var(--card);
  border: 1px solid var(--bordo);
  border-radius: 28px;
  padding: 60px 40px;
}
.cta h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta > p { color: var(--testo-2); max-width: 46ch; margin: 0 auto 30px; }
.cta__punti {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.cta__punti li {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--testo);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--bordo);
}

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--bordo);
  background: rgba(26, 29, 39, 0.4);
  margin-top: 40px;
}
.footer__riga {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 36px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px 24px 36px;
}
.footer__brand p { color: var(--testo-2); font-size: 14px; margin-top: 10px; max-width: 26em; }
.footer__col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--testo-2);
  margin-bottom: 14px;
}
.footer__col a {
  display: block;
  font-size: 14px;
  color: var(--testo);
  opacity: 0.78;
  padding: 4px 0;
  transition: opacity 0.18s ease, color 0.18s ease;
}
.footer__col a:hover { opacity: 1; color: var(--accento); }
.footer__base {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 24px 32px;
  border-top: 1px solid var(--bordo);
  font-size: 12.5px;
  color: var(--testo-2);
}

/* ── ANIMAZIONE DI RIVELAZIONE ───────────────────────────────────────────── */
.rivela {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.rivela.visibile { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rivela { opacity: 1; transform: none; transition: none; }
}

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 56px; }
  .hero__testo { text-align: center; }
  .hero__sottotitolo { margin-inline: auto; }
  .hero__azioni, .hero__prove { justify-content: center; }
  .pannello { grid-template-columns: 1fr; padding: 34px; gap: 34px; }
  .footer__riga { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav__link { display: none; }
  .sezione { padding: 60px 20px; }
  .hero { padding-inline: 20px; }
  .hero__prove { gap: 24px; }
  .cta { padding: 40px 24px; }
  .btn { width: 100%; }
  .btn--sm { width: auto; }
  .hero__azioni { flex-direction: column; }
}

@media (max-width: 520px) {
  .footer__riga { grid-template-columns: 1fr; gap: 26px; }
  .footer__base { flex-direction: column; }
}

/* Accessibilità: focus sempre visibile sul dark */
a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accento);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Senza JS l'IntersectionObserver non parte mai: mostra tutto subito. */
html:not(.js) .rivela { opacity: 1; transform: none; }