/* Grundlegende Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  color: #1a1a1a;
  line-height: 1.6;
  background-color: #fff;
}

a {
  color: #0077cc;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover,
a:focus {
  color: #005fa3;
  text-decoration: underline;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1em 2em;
}

/* Header */
header {
  background-color: #1a1a1a;
  color: #fff;
  padding: 1em 0;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  position: sticky;
  top: 0;
  z-index: 999;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

header nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2em;
  margin: 0;
  padding: 0.5em 0 0 0;
}

header nav ul li a {
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.3em 0.5em;
}

header nav ul li a:hover,
header nav ul li a:focus {
  color: #4db8ff;
  text-decoration: underline;
  outline: none;
}

/* Footer */
footer {
  background-color: #1a1a1a;
  color: #fff;
  padding: 1.5em 0;
  text-align: center;
  font-size: 0.9rem;
  margin-top: 3em;
  box-shadow: inset 0 1px 3px rgba(255,255,255,0.1);
}

footer nav {
  display: flex;
  justify-content: center;
  gap: 1em;
  flex-wrap: wrap;
}

footer nav a {
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
}

footer nav a:hover,
footer nav a:focus {
  color: #4db8ff;
  text-decoration: underline;
  outline: none;
}

/* Hauptüberschriften */
h1, h2, h3 {
  color: #1a1a1a;
  margin-top: 0;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.75em;
}

h2 {
  font-size: 2rem;
  margin-top: 1.5em;
  margin-bottom: 0.6em;
}

h3 {
  font-size: 1.4rem;
  margin-top: 1.2em;
  margin-bottom: 0.4em;
}

/* Text und Absätze */
p {
  margin-bottom: 1em;
  font-size: 1rem;
}

ul, ol {
  margin-left: 1.5em;
  margin-bottom: 1em;
}

ul li, ol li {
  margin-bottom: 0.5em;
}

/* Links */
a {
  transition: color 0.3s ease;
}

/* Formulare */
form {
  max-width: 600px;
  margin-top: 1em;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: 0.75em 1em;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 1rem;
  resize: vertical;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: #0077cc;
  outline: none;
}

button {
  padding: 0.75em 2em;
  background-color: #1a1a1a;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover,
button:focus {
  background-color: #4db8ff;
  outline: none;
}

/* Tabellen */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 1rem;
}

th, td {
  padding: 0.75em 1em;
  border: 1px solid #ccc;
  text-align: left;
}

th {
  background-color: #f4f4f4;
  font-weight: 700;
}

/* Zielgruppen Grid */
.zielgruppen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(280px,1fr));
  gap: 2em;
}

.zielgruppe {
  border: 1px solid #ddd;
  padding: 1.5em;
  border-radius: 8px;
  background-color: #fafafa;
  box-shadow: 0 0 5px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease;
}

.zielgruppe:hover,
.zielgruppe:focus-within {
  box-shadow: 0 0 15px rgba(0,123,255,0.3);
}

.zielgruppe h3 {
  margin-top: 0;
}

.zielgruppe img {
  margin-top: 1em;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

/* Blog-Liste */
.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2em;
}

article {
  background-color: #f9f9f9;
  padding: 1.5em;
  border-radius: 8px;
  border: 1px solid #ddd;
}

article h2 {
  margin-top: 0;
}

article p {
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
  header nav ul,
  footer nav {
    flex-direction: column;
    gap: 0.8em;
  }

  .container {
    padding: 1em;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}