@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;500;600&family=Sora:wght@400;600;700;800&display=swap');

:root {
  --navy:       #0E2340;
  --teal:       #0891B2;
  --teal-light: #06B6D4;
  --teal-pale:  #E0F7FA;
  --accent:     #0EA5E9;
  --bg:         #F4F8FB;
  --surface:    #FFFFFF;
  --text:       #1E293B;
  --text-muted: #64748B;
  --border:     #DDE6EF;
  --shadow-sm:  0 2px 8px rgba(14, 35, 64, 0.08);
  --shadow-md:  0 6px 24px rgba(14, 35, 64, 0.12);
  --shadow-lg:  0 16px 48px rgba(14, 35, 64, 0.16);
  --radius:     12px;
  --radius-sm:  8px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width:  1100px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Lexend', sans-serif;
  font-weight: 400;
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

header {
  background: linear-gradient(135deg, var(--navy) 0%, #1A4A7A 60%, #0D6B8A 100%);
  color: #FFFFFF;
  padding: 3.5rem 2rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(8, 145, 178, 0.10) 0%, transparent 40%);
  pointer-events: none;
}

header::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

header h1 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

header h1 span {
  color: var(--teal-light);
}

header p {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 0.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  padding: 0 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

nav a {
  font-family: 'Sora', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  text-decoration: none;
  padding: 1.1rem 1.4rem;
  position: relative;
  transition: color var(--transition);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1.4rem;
  right: 1.4rem;
  height: 3px;
  background: var(--teal);
  border-radius: 3px 3px 0 0;
  transform: scaleX(0);
  transition: transform var(--transition);
}

nav a:hover {
  color: var(--teal);
}

nav a:hover::after,
nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

nav a[aria-current="page"] {
  color: var(--teal);
}

main {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

h2 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 1rem;
}

h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--teal-light));
  border-radius: 4px;
  margin-top: 0.6rem;
}

h3 {
  font-family: 'Sora', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  margin-top: 2.2rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h3::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
  flex-shrink: 0;
}

p {
  margin-bottom: 1.1rem;
  color: var(--text);
  max-width: 70ch;
}

main > p,
main > h2,
main > h3,
main > ul,
main > form {
  animation: fadeUp 0.5s ease both;
}

main > *:nth-child(1) { animation-delay: 0.05s; }
main > *:nth-child(2) { animation-delay: 0.1s;  }
main > *:nth-child(3) { animation-delay: 0.15s; }
main > *:nth-child(4) { animation-delay: 0.2s;  }
main > *:nth-child(5) { animation-delay: 0.25s; }
main > *:nth-child(6) { animation-delay: 0.3s;  }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

ul {
  list-style: none;
  margin: 0.5rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
  transition: background var(--transition), border-left-color var(--transition);
}

li::before {
  content: '→';
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

li:hover {
  background: var(--teal-pale);
  border-left-color: var(--teal-light);
}

a:not(nav a) {
  color: var(--teal);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-bottom-color var(--transition), color var(--transition);
}

a:not(nav a):hover {
  color: var(--navy);
  border-bottom-color: var(--teal);
}

main > a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--teal), var(--accent));
  color: #FFFFFF !important;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: 50px;
  border: none !important;
  box-shadow: 0 4px 16px rgba(8, 145, 178, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
  margin-top: 0.5rem;
}

main > a::after {
  content: '→';
  font-size: 1.1em;
}

main > a:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 24px rgba(8, 145, 178, 0.45);
}

form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  max-width: 560px;
}

label {
  display: block;
  font-family: 'Sora', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

input[type="text"],
input[type="email"],
textarea {
  display: block;
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Lexend', sans-serif;
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: var(--teal);
  background: var(--surface);
  box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.12);
}

textarea {
  resize: vertical;
  min-height: 130px;
}

button[type="submit"] {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--teal), var(--accent));
  color: #FFFFFF;
  font-family: 'Sora', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(8, 145, 178, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
  margin-top: 0.5rem;
}

button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(8, 145, 178, 0.45);
}

button[type="submit"]:active {
  transform: translateY(0);
}

main > p strong {
  color: var(--teal);
}

footer {
  background: var(--navy);
  color: #ffffff !important;
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  margin-top: auto;
  position: relative;
  z-index: 10;
}

footer p {
  color: inherit;
  max-width: none;
  margin-bottom: 0;
}

/* ======= Responsive ======= */
@media (max-width: 768px) {
  nav {
    flex-wrap: wrap;
    gap: 0;
  }

  nav a {
    flex: 1 1 auto;
    text-align: center;
    padding: 0.9rem 0.75rem;
    font-size: 0.8rem;
  }

  main {
    padding: 2rem 1.25rem 3rem;
  }

  header {
    padding: 2.5rem 1.25rem 2rem;
  }

  form {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  nav a {
    font-size: 0.75rem;
    padding: 0.85rem 0.5rem;
  }
}

.software-versione {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  gap: 20px;
}

.software-versione p {
  flex: 1;
  margin: 0;
}

.software-img {
  width: 200px;
  height: auto;
  border-radius: 8px;
  flex-shrink: 0;
}

/* Mobile: immagine sotto il testo */
@media (max-width: 768px) {
  .software-versione {
    flex-direction: column;
    align-items: center;
  }

  .software-img {
    margin-top: 15px;
  }
}