/* Grundlayout und Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
header {
  text-align: center;
  padding: 1.5rem 1rem;
}
.app-logo {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 15%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
header h1 {
  margin-top: 1rem;
  font-size: 2.2rem;
}

/* Hauptinhalt */
main {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  flex: 1;
  padding: 1rem;
}

/* Hero Section */
.hero {
  text-align: center;
  margin: 2rem auto;
  max-width: 600px;
}
.hero h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}
.button-container {
  display: flex;
  gap: 1rem;
  justify-content: center;
}
.store-link {
  display: inline-block;
  padding: 0.8rem 1.2rem;
  background-color: #333;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 0.3s;
}
.store-link:hover {
  background-color: #555;
}

/* Features Section */
.features {
  margin: 2rem auto;
  max-width: 700px;
  text-align: center;
}
.features h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}
.features p {
  font-size: 1rem;
  margin: 1rem 0;
  line-height: 1.6;
}
.features h4 {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}
.features ul {
  list-style: none;
  padding-left: 0;
  margin: 1.5rem auto;
  text-align: left;
  max-width: 500px;
}
.features li {
  margin: 0.5rem 0;
  padding-left: 1.8rem;
  background: url('data:image/svg+xml;utf8,<svg fill="%23333" height="18" viewBox="0 0 16 16" width="18" xmlns="http://www.w3.org/2000/svg"><path d="M13.485 1.929A1.25 1.25 0 1012.071.515L5.167 7.419 3.929 6.18A1.25 1.25 0 102.515 7.594l2.5 2.5a1.25 1.25 0 001.767 0l6.703-6.703z"></path></svg>')
    no-repeat left center;
  background-size: 18px 18px;
  text-indent: 25px;
}

/* Info Section */
.info {
  margin: 2rem auto;
  max-width: 600px;
  text-align: center;
  line-height: 1.6;
}
.info p {
  margin: 1rem auto;
  font-size: 1.1rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem 0;
  background-color: #333;
  color: #fff;
}
footer p {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
footer a {
  color: #fff;
  text-decoration: none;
  margin: 0 0.5rem;
  font-size: 0.9rem;
}
footer a:hover {
  text-decoration: underline;
}

/* Responsive: ab 768px, ab 600px usw. */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 1.6rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .features ul {
    max-width: 90%;
  }
  .info p {
    width: 90%;
  }
}

@media (max-width: 600px) {
  header h1 {
    font-size: 1.8rem;
  }
  .hero h2 {
    font-size: 1.4rem;
  }
  .store-link {
    padding: 0.6rem 1rem;
  }
  .features li {
    text-indent: 20px;
  }
  footer p, footer a {
    font-size: 0.8rem;
  }
}