/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f4f9fc;
  color: #133c55;
  line-height: 1.6;
}

/* Header and Logo */
header {
  background-color: #133c55;
  color: white;
  padding: 15px 10px;
  text-align: center;
}

.logo-title {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo-title img {
  height: 60px;
  max-width: 100%;
}

.logo-title h1 {
  font-size: 1.6rem;
  margin-top: 10px;
}

/* Nav Menu (no hamburger, always visible) */
nav {
  background-color: #386fa4;
  padding: 10px 0;
}

#nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
}

#nav-links li {
  margin: 5px 10px;
}

#nav-links a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  padding: 6px 10px;
  border-radius: 4px;
}

#nav-links a:hover {
  background-color: #2d5e90;
}



/* Course Section */
.pdf-course {
  max-width: 900px;
  margin: 50px auto 20px;
  padding: 20px;
  background-color: white;
  text-align: center;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.pdf-intro-img {
  width: 200px;
  height: auto;
  border-radius: 10px;
  margin: 0 auto 20px;
  display: block;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.pdf-course h2 {
  font-size: 2rem;
  color: #133c55;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.1rem;
  color: #444;
  margin-bottom: 20px;
}

.btn-link {
  display: inline-block;
  background-color: #386fa4;
  color: white;
  padding: 10px 16px;
  margin: 5px 10px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
}

.btn-link:hover {
  background-color: #2d5e90;
}

/* PDF Pages */
.pdfs-pages {
  max-width: 1000px;
  margin: 0 auto 60px;
  padding: 20px;
  text-align: center;
}

.pdfs-pages img {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.08);
  display: block;
}

/* WhatsApp Button */
.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  z-index: 1000;
  text-decoration: none;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

/* Footer */
footer {
  background-color: #133c55;
  color: white;
  padding: 20px 10px;
  text-align: center;
}

footer a {
  color: white;
  margin: 0 10px;
  font-size: 1.5rem;
  text-decoration: none;
}

footer a:hover {
  color: #91e5f6;
}

/* Responsive Fixes */
@media screen and (max-width: 768px) {
  .logo-title h1 {
    font-size: 1.3rem;
  }

  .slider-container {
    width: 95%;
  }

  #nav-links a {
    font-size: 0.9rem;
    padding: 4px 6px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .whatsapp-btn {
    width: 50px;
    height: 50px;
    font-size: 1.6rem;
    bottom: 15px;
    right: 15px;
  }
}