/* style.css */
body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #333;
  background-color: #f9f9f9;
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  padding: 20px 0;
  border-bottom: 1px solid #ccc;
}
.logo {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 10px;
}
.logo img {
  height: 80px;
  margin-right: 20px;
}

.main-content {
  flex: 1;
}

.subtitle {
  margin-top: 10px;
  font-size: 1.2em;
  color: #666;
}

nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  background-color: #f0f0f0;
  padding: 10px 0;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: background-color 0.3s;
}
nav a {
  margin: 0 20px;
  padding: 8px 12px;
  font-size: 1.1em;
  text-decoration: none;
  color: #007bff;
  border-radius: 4px;
  transition: background-color 0.3s, color 0.3s, transform 0.2s;
}
nav a:hover {
  color: #fff;
  background-color: #007bff;
  transform: scale(1.05);
}
nav a:active {
  transform: scale(0.98);
}

.main-content {
  padding: 20px;
  text-align: center;
}

.flowchart {
  max-width: 80%;
  height: auto;
  margin-bottom: 20px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1); /* add subtle shadow */
  border-radius: 8px;
}

.citation {
  text-align: left;
  margin-top: 20px;
  padding: 15px;
  border-top: 1px solid #ccc;
  background-color: #fff;
  border-radius: 8px;
}

footer {
  width: 100%;
  padding: 10px 0;
  background-color: #fff;
  border-top: 1px solid #ccc;
  text-align: center;
  font-size: 0.75em;
}

@media (max-width: 768px) {
  .container {
    padding: 0 10px;
    max-width: 100%;
  }

  header {
    padding: 15px 0;
  }

  .logo img {
    height: 60px;
    margin-right: 10px;
  }

  .subtitle {
    font-size: 1em;
    margin: 5px 0 15px 0;
    padding: 0 10px;
  }

  nav {
    padding: 8px 5px;
    flex-wrap: wrap;
  }
  nav a {
    margin: 5px 8px;
    font-size: 1em;
    padding: 6px 10px;
  }

  .main-content {
    padding: 15px 10px;
  }

  .flowchart {
    max-width: 100%;
    height: auto;
  }

  .flowchart {
    max-width: 100%;
  }

  .citation {
    font-size: 0.9em;
    padding: 10px;
  }

  footer {
    font-size: 0.7em;
    padding: 15px 10px;
  }
}