/* Grundstyles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9fbff;
  color: #1a2a6c;
  line-height: 1.6;
}

/* Header */
header {
  background-color: #1a2a6c;
  color: #fff;
  text-align: center;
  padding: 2rem 1rem 1rem;
  position: relative;
}

.header-main h1 {
  font-size: 2.5rem;
  margin-bottom: 0.3rem;
}

.header-main p {
  font-weight: 300;
  font-size: 1.1rem;
  opacity: 0.85;
  margin-bottom: 1rem;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  padding: 0.8rem 0;
}

nav a {
  color: #1a2a6c;
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
  padding: 0.5rem 1.3rem;
  border-radius: 25px;
  background-color: #7da7ff;
  box-shadow: 0 2px 5px rgba(125,167,255,0.4);
  transition: background-color 0.3s, color 0.3s;
}

nav a:hover,
nav a:focus {
  background-color: #5a7be0;
  color: #fff;
}

/* Hamburger Menü Checkbox verstecken */
.nav-toggle {
  display: none;
}

/* Hamburger Icon */
.nav-toggle-label {
  display: none;
  position: absolute;
  top: 1.8rem;
  right: 1rem;
  height: 25px;
  width: 30px;
  cursor: pointer;
  z-index: 1000;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  background-color: #fff;
  height: 3px;
  width: 100%;
  border-radius: 3px;
  position: relative;
  transition: all 0.3s ease;
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: '';
  position: absolute;
}

.nav-toggle-label span::before {
  top: -8px;
}

.nav-toggle-label span::after {
  top: 8px;
}



/* Main Content */
main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

section {
  margin-bottom: 3rem;
}

section h2 {
  color: #1a2a6c;
  font-size: 2rem;
  margin-bottom: 1rem;
}

section a {
  color: #1a2a6c;
  text-decoration: underline;
}

.btn {
  display: inline-block;
  background-color: #7da7ff;
  color: #1a2a6c;
  font-weight: 700;
  padding: 0.7rem 1.5rem;
  border-radius: 25px;
  text-decoration: none;
  box-shadow: 0 2px 5px rgba(125,167,255,0.4);
  transition: background-color 0.3s ease;
}

.btn:hover,
.btn:focus {
  background-color: #5a7be0;
  color: #fff;
}

/* Footer */
footer {
  background-color: #1a2a6c;
  color: #fff;
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
  nav {
    position: fixed;
    top: 60px;
    right: 0;
    background-color: #d9e4ff;
    flex-direction: column;
    width: 220px;
    height: calc(100vh - 60px);
    padding-top: 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    box-shadow: -2px 0 8px rgba(0,0,0,0.15);
  }

  nav a {
    margin: 0.5rem 1.5rem;
  }

  .nav-toggle:checked ~ nav {
    transform: translateX(0);
  }

  .nav-toggle-label {
    display: block;
  }
}