/* =========================
   SENTORA – Premium CSS
   Style: Minimal, chiaro, vivace, Executive
   ========================= */

:root {
  --brand-blue: #0B4CCB;     /* logo blue */
  --brand-red: #FF2D2D;      /* logo red */
  --ink-900: #0F172A;
  --ink-700: #334155;
  --ink-500: #64748B;
  --bg-100: #F8FAFC;
  --bg-200: #F1F5F9;
  --white: #FFFFFF;
  --radius: 14px;
  --shadow-soft: 0 10px 30px rgba(2, 8, 23, 0.08);
  --shadow-card: 0 8px 24px rgba(2, 8, 23, 0.06);
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink-900);
  background: var(--bg-100);
  line-height: 1.6;
}

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

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

/* =========================
   Layout Helpers
   ========================= */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 64px 0;
}

/* =========================
   Header
   ========================= */

.header {
  background: #0446c5;
  border-bottom: none;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 24px;
  color: #FFFFFF;
}

.nav a {
  margin-left: 24px;
  font-weight: 600;
  color: #FFFFFF;   /* bianco pieno */
}

.nav a:hover {
  color: #E6EEFF;   /* leggermente meno bianco al hover */
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 24px;
  color: var(--brand-blue);
}

.nav a {
  margin-left: 24px;
  font-weight: 600;
  color: #FFFFFF;   /* bianco pieno */
}

.nav a:hover {
  color: #E6EEFF;   /* leggermente meno bianco al hover */
}

/* =========================
   Buttons
   ========================= */

.btn-primary {
  background: var(--brand-blue);
  color: var(--white);
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 40px rgba(11, 76, 203, 0.25);
}

.btn-secondary {
  border: 1px solid #CBD5E1;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--ink-700);
}

.btn-secondary:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

/* =========================
   Hero
   ========================= */

.hero {
  background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero p {
  font-size: 18px;
  color: var(--ink-700);
  max-width: 560px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 32px;
}

.hero-visual img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

/* =========================
   Trust
   ========================= */

.trust {
  background: var(--white);
  border-top: 1px solid #E2E8F0;
  border-bottom: 1px solid #E2E8F0;
  padding: 48px 0;
}

.trust p {
  text-align: center;
  color: var(--ink-500);
  font-weight: 500;
  margin-bottom: 12px;
}

.logos {
  display: flex;
  gap: 32px;
  justify-content: center;
  align-items: center;
  opacity: 0.6;
}

/* =========================
   How it works
   ========================= */

.how-it-works h2,
.features h2,
.who h2,
.pricing h2,
.cta h2 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 12px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--brand-blue);
}

.step h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

/* =========================
   Features
   ========================= */

.features {
  background: var(--bg-200);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card h3 {
  margin-top: 0;
  color: var(--brand-blue);
}

/* =========================
   Who it's for
   ========================= */

.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.who-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  font-weight: 600;
  box-shadow: var(--shadow-card);
}

/* =========================
   Pricing
   ========================= */

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 card affiancate */
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--white);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  text-align: center;
}

.pricing-card.featured {
  border: 2px solid var(--brand-blue);
  transform: scale(1.03);
}

.price {
  font-size: 33px;
  font-weight: 800;
  margin: 16px 0;
  color: var(--brand-blue);
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: 24px 0 32px;
}

.pricing-card li {
  margin-bottom: 8px;
  color: var(--ink-700);
}

/* =========================
   CTA
   ========================= */

.cta {
  background: linear-gradient(135deg, var(--brand-blue), #1E3A8A);
  color: var(--white);
}

.cta-box {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 64px 48px;
  text-align: center;
  backdrop-filter: blur(6px);
}

.cta p {
  color: #E5E7EB;
}

.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}

.cta-form input {
  padding: 12px 14px;
  border-radius: 8px;
  border: none;
  min-width: 220px;
}

.cta-form button {
  border: none;
  cursor: pointer;
}

/* =========================
   Footer
   ========================= */

.footer {
  background: #0446c5;
  color: #E6EEFF;
  padding: 64px 0;
}

.footer a {
  color: #E6EEFF;
  opacity: 0.85;
}

.footer a:hover {
  opacity: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}

.footer a {
  color: #CBD5E1;
  opacity: 0.8;
}

.footer a:hover {
  opacity: 1;
}

.footer .logo img {
  height: 50px;        /* increase size – tweak if you want it bigger */
  width: auto;
}

/* =========================
   Responsive – Tablet
   ========================= */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* =========================
   Responsive – Mobile
   ========================= */
@media (max-width: 700px) {
  section {
    padding: 64px 0;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

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

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

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

  .pricing-cards {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none; /* hamburger menu futuro */
  }

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

.header .btn-primary {
  background: #FFFFFF;
  color: #0446c5;
  box-shadow: none;
}

.header .btn-primary:hover {
  background: #E6EEFF;
  color: #0446c5;
}