:root {
  --green: #2f7a4a;
  --light: #f7f8f4;
  --dark: #2a2a2a;
  --muted: #6b6b6b;
}

body {
  background-color: var(--light);
  font-family: 'Poppins', sans-serif;
  margin: 0;
  color: var(--dark);
}

header {
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 100;
  border-radius: 30rem;
  margin: 1rem 3rem;
  padding: 0.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  width: 5rem;
}

nav a {
  margin: 0 0.8rem;
  text-decoration: none;
  color: var(--green);
  transition: color 0.3s ease;
  font-weight: 500;
}

nav a:hover {
  color: seagreen;
}

.btn-groen {
  background: #2f7a4a;
  color: #ffffff;
  padding: 0.6rem 1rem;
  border-radius: 30rem;
  text-decoration: none;
  font-weight: 600;
}

.btn-groen:hover {
  background: #f7f8f4;
  color: #2f7a4a;
}

main {
  max-width: 90rem;
  margin: 3rem auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

section {
  background: #ffffff;
  border-radius: 1.2rem;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

section h2 {
  color: var(--green);
  font-size: 2.2rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
}

section ul {
  list-style: none;
  padding: 0;
}

section ul li {
  border-bottom: 1px solid #eee;
  padding: 1.5rem 0;
}

section ul li:last-child {
  border-bottom: none;
  padding: 0;
}

li img {
  width: 100%;
  margin-top: 1.5rem;
  border-radius: 1rem;
  object-fit: cover;
}

h3 {
  color: var(--green);
  margin-bottom: 0.5rem;
}

dt {
  font-weight: 600;
  font-size: 1.1rem;
}

dd {
  margin-left: 0;
  color: var(--muted);
  margin-top: 0.3rem;
}

aside {
  background: #ffffff;
  border-radius: 1.2rem;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  height: fit-content;
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

input {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 0.6rem;
  font-family: inherit;
  box-sizing: border-box;
}

input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(47, 122, 74, 0.1);
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: #6b6b6b;
  font-size: 0.9rem;
}

footer a {
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 760px) {
  main {
    grid-template-columns: 1fr;
    margin: 1rem;
    padding: 0 1rem;
  }

  header {
    border-radius: 0rem;
    margin: 0rem;
    padding: 0rem;
  }

  .nav-container {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem;
    text-align: center;
  }

  nav {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
  }

  nav a {
    margin: 0;
  }

  .btn-primary {
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
  }
}