/* Reset and base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f0f4f8;
  color: #333;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #1e40af;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgb(30 64 175 / 0.4);
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: white;
}

/* Hamburger */
.hamburger {
  display: none;
  font-size: 2rem;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links li a {
  color: white;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  transition: background-color 0.3s ease;
}

.nav-links li a:hover,
.nav-links li a.active {
  background-color: #60a5fa;
  color: #1e40af;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: white;
  padding: 5rem 2rem;
  border-radius: 12px;
  text-align: center;
  margin: 2rem 1rem;
  box-shadow: 0 8px 20px rgb(59 130 246 / 0.5);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 900;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  background-color: #fbbf24;
  color: #1e40af;
  font-weight: 700;
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 5px 15px rgb(251 191 36 / 0.6);
}

.btn-primary:hover {
  background-color: #f59e0b;
}

/* Accordion */
.accordion {
  width: 100%;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.accordion-item + .accordion-item {
  border-top: 1px solid #e2e8f0;
}

.accordion-header {
  width: 100%;
  padding: 1.3rem 1.8rem;
  text-align: left;
  background-color: #3b82f6;
  color: white;
  font-weight: 700;
  font-size: 1.2rem;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header:hover {
  background-color: #2563eb;
}

.accordion-header::after {
  content: '+';
  font-size: 1.6rem;
  transition: transform 0.3s ease;
}

.accordion-header.active::after {
  content: '-';
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.8rem;
  background-color: #f9fafb;
  transition: max-height 0.35s ease;
}

.accordion-content ul {
  list-style-type: disc;
  margin: 1rem 0 1.5rem 1.5rem;
  color: #1e293b;
}

.accordion-content ul li {
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  background-color: #1e40af;
  color: white;
  font-weight: 600;
  margin-top: auto;
}

/* Responsive styles */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    margin-top: 1rem;
  }

  .nav-links.open {
    display: flex;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .btn-primary {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .accordion-header {
    font-size: 1rem;
    padding: 1rem;
  }

  .accordion-content ul li {
    font-size: 0.95rem;
  }
}