body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f7f7f7;
  color: #333;
}

header {
  background-color: #005f73;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header img {
  height: 50px;
  vertical-align: middle;
}

header h1 {
  display: inline-block;
  margin-left: 10px;
}

.button-group {
  display: flex;
  gap: 10px;
}

.impressum-btn,
.help-btn {
  background-color: #0a9396;
  color: white;
  border: none;
  padding: 8px 14px;
  cursor: pointer;
  border-radius: 5px;
}

.download-btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #94d2bd;
  color: #000;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s;
}

.download-btn:hover {
  background-color: #76c7aa;
}

.content {
  padding: 30px;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 100;
  display: none;
}

.impressum-popup,
.help-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 2em;
  z-index: 101;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
  display: none;
  border-radius: 8px;
}

.impressum-popup h3,
.help-popup h3 {
  margin-top: 0;
}

.impressum-popup button,
.help-popup button {
  margin-top: 20px;
  background-color: #005f73;
  color: white;
  border: none;
  padding: 8px 14px;
  cursor: pointer;
  border-radius: 5px;
}