body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
label,
button,
input,
textarea,
pre,
footer {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
    "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.5;
}

body {
  margin: 1.2rem auto;
  background-color: #fafafa;
  max-width: 80%;
  text-align: center;
  font-size: 16px;
}

h2,
h3,
p,
label,
footer {
  text-align: center;
}

h2 {
  font-size: 3rem;
  font-weight: 700;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
  color: #3498db;
  position: relative;
  padding-bottom: 0.5rem;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background-color: #3498db;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 0.25rem;
  color: #34495e;
}

.logo {
  height: 250px;
  width: auto;
  display: block;
  margin: 0 auto;
}

textarea {
  width: 100%;
  height: 200px;
  min-height: 200px;
  max-height: 400px;
  resize: vertical;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  background-color: #fff;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  margin-top: 0.25rem;
  transition: border-color 0.2s;
  text-align: left;
}

textarea:focus {
  outline: none;
  border-color: #3498db;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

button {
  margin-top: 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem 1.5rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 25px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
  font-family: inherit;
}

button:hover:not(:disabled) {
  background-color: #2980b9;
}

button:active:not(:disabled) {
  background-color: #1c6ea4;
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: #95a5a6;
}

pre {
  background: #f8f9fa;
  padding: 1rem;
  white-space: pre-wrap;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  max-height: 500px;
  overflow-y: auto;
  margin-top: 0.5rem;
  text-align: left;
  margin-left: auto;
  margin-right: auto;
}

label[for="affilInput"] {
  display: block;
  margin-bottom: 10px;
  font-weight: 500;
  color: #2c3e50;
  font-size: 1.1rem;
}

p {
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

/* Hide results section initially */
#results-section {
  display: none;
}

#results-section.visible {
  display: block;
}

/* PubMedBridge link styling */
.clickable-link {
  text-decoration: none;
  color: black;
  font-weight: bold;
}

.clickable-link:hover {
  color: #1a73e8;
  text-decoration: underline;
  cursor: pointer;
}

/* Footer styling */
footer {
  margin-top: 2rem;
  padding-top: 0.5rem;
  border-top: 1px solid #ddd;
  font-size: 0.9rem;
  color: #666;
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive design for small screens */
@media (max-width: 768px) {
  body {
    max-width: 95%;
    margin: 1rem auto;
    font-size: 14px;
  }

  .logo {
    height: 150px;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  textarea {
    font-size: 13px;
    height: 150px;
    min-height: 150px;
  }

  button {
    padding: 0.65rem 1.25rem;
    font-size: 0.95rem;
  }

  pre {
    font-size: 13px;
    padding: 0.75rem;
  }

  footer {
    max-width: 95%;
    font-size: 0.85rem;
  }
}