:root {
  --bg: #0b1020;
  --card: #121a35;
  --soft: #1b2552;
  --txt: #e9ecf8;
  --muted: #b9c0e3;
  --accent: #6ee7b7;
  --accent-2: #60a5fa;
  --danger: #f43f5e;
  --warning: #f59e0b;
}

/* Reset & Base */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #0b1020, #0b1020 40%, #0e1530);
  color: var(--txt);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 14px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0a0f25;
  font-weight: 800;
  letter-spacing: 0.2px;
  box-shadow: 0 10px 30px rgba(64, 187, 235, 0.3);
  transition: transform 0.05s ease, filter 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent-2);
  color: var(--txt);
}

.muted {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(110, 231, 183, 0.15);
  border: 1px solid rgba(110, 231, 183, 0.35);
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--accent);
}

/* Header */
header.sticky {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 16, 32, 0.8);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Layout helpers */
.flex {
  display: flex;
}

.between {
  justify-content: space-between;
}

.center {
  align-items: center;
}

/* Hero section */
.hero {
  padding: 56px 24px 24px;
}

.hero h1 {
  font-size: clamp(28px, 5vw, 54px);
  line-height: 1.05;
  margin: 12px 0 10px;
}

.hero p.lead {
  font-size: clamp(16px, 2.2vw, 22px);
  color: var(--muted);
  max-width: 780px;
}

.hero .cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 18px;
}

/* Media */
.media {
  position: relative;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, #0c132b, #0c132b);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  aspect-ratio: 16 / 9;
  margin-top: 50px;
  margin-bottom: 50px;
  min-height: 280px;
}

.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mute-btn {
  position: absolute;
  bottom: 14px;
  right: 14px;
  padding: 10px;
  border: none;
  border-radius: 50%;
  background: rgba(10, 15, 35, 0.6);
  color: var(--txt);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mute-btn:hover {
  background: rgba(20, 30, 60, 0.85);
  transform: scale(1.08);
}

.mute-btn svg {
  width: 22px;
  height: 22px;
  stroke: var(--txt);
  transition: opacity 0.2s ease;
}



/* Trust logos */
.trust {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 18px;
  margin: 26px 0 4px;
  align-items: center;
  justify-items: center;
}

.trust div {
  border-radius: 14px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
  padding: 6px;
}

.trust img {
  max-height: 82px;
  width: auto;
  filter: brightness(0.95) contrast(1.1);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.trust img:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.trust-link {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.trust-link:hover {
  opacity: 0.8;
}


/* Cards / sections */
.grid-2 {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  padding: 22px;
}

/* Typography */
h2 {
  font-size: clamp(22px, 3vw, 34px);
  margin: 6px 0 12px;
}

h3 {
  font-size: clamp(18px, 2.5vw, 24px);
  margin: 0 0 8px;
}

/* Lists */
ul.benefits {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px 18px;
  padding-left: 18px;
}

ul.benefits li {
  list-style: "✔ ";
  padding-left: 6px;
}

/* Curriculum */
.curriculum {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.curriculum .tile {
  background: var(--soft);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 16px;
}

/* Testimonials */
.testi {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.testi .t {
  background: var(--soft);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  padding: 16px;
}

.t .who {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
}

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: #334;
  display: inline-block;
}

/* Offer section */
.offer {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 20px;
}

.price {
  font-size: 46px;
  font-weight: 900;
}

/* Countdown */
.countdown {
  display: flex;
  gap: 10px;
}

.count {
  background: #0c152f;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px 14px;
  text-align: center;
  min-width: 66px;
}

.count b {
  font-size: 22px;
  display: block;
}

/* Form */
form {
  display: grid;
  gap: 10px;
}

input,
select,
textarea {
  background: #0a132b;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--txt);
  padding: 12px 14px;
  border-radius: 12px;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: var(--accent-2);
}

/* FAQ */
.faq details {
  background: var(--soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 12px 14px;
}

.faq details + details {
  margin-top: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

/* Footer */
.footer {
  padding: 40px 0;
  color: var(--muted);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 980px) {
  .grid-2,
  .offer {
    grid-template-columns: 1fr;
  }

  .curriculum {
    grid-template-columns: repeat(2, 1fr);
  }

  .testi {
    grid-template-columns: 1fr 1fr;
  }

  .trust {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
    overflow-x: hidden;
  }

  .card {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .curriculum {
    grid-template-columns: 1fr;
  }

  .testi {
    grid-template-columns: 1fr;
  }

  .hero .cta {
    flex-direction: column;
  }

  .media iframe,
  .media video {
    height: 280px;
  }
}

/* --- FIX principale: bullet list che causava overflow --- */
@media (max-width: 760px) {
  ul.benefits {
    grid-template-columns: 1fr;       /* da 2 colonne -> 1 colonna */
    gap: 10px 14px;
  }
}

/* Trust logos: più stretto su telefoni molto piccoli */
@media (max-width: 480px) {
  .trust {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Header: non farlo “strabordare” ma senza rimpicciolirlo */
@media (max-width: 480px) {
  header .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  header .container .flex.center:last-child {
    display: grid;                     /* bottoni su griglia */
    grid-template-columns: 1fr 1fr;    /* restano affiancati ma si adattano */
    gap: 10px;
  }
  header .container .flex.center:last-child a {
    width: 100%;
    text-align: center;
  }
}

/* Guard-rails generali (senza comprimere l’header) */
img, iframe, video { max-width: 100%; height: auto; }
.flex > * { min-width: 0; }            /* evita overflow in contenitori flex */
.container { width: 100%; }

/* SLIDER DOCENTI */
.slider {
  position: relative;
  overflow: hidden;
}

.slide {
  opacity: 0;
  transform: translateX(100%);
  transition: opacity 0.5s ease, transform 0.5s ease;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
  position: relative;
}

.slider-controls {
  margin-top: 18px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.slider-controls button {
  background: rgba(255, 255, 255, 0.05);
  color: var(--txt);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 22px;
  line-height: 22px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

.slider-controls button:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.05);
}

.whatsapp-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
}

.whatsapp-btn {
  background: linear-gradient(90deg, #25D366, #128C7E);
  color: #fff;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.25);
}

.whatsapp-btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.whatsapp-cta h3 {
  margin: 0;
  font-size: 20px;
  color: var(--txt);
}