body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
}

header {
  background: #007A4D; 
  color: white;
  text-align: center;
}

.header-top {
  padding: 20px 10px 10px;
}

.tagline {
  margin-top: 5px;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* COLLABORATION BAR */
.collaboration-bar {
  background: #005f3a;
  padding: 10px;
}

.collab-label {
  font-size: 0.85rem;
  opacity: 0.8;
}

.institutions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 5px;
}

.institution {
  background: #FFB612; /* Gold */
  color: #000;
  padding: 5px 10px;
  border-radius: 20px;
  font-weight: bold;
  font-size: 0.9rem;
}

.divider {
  opacity: 0.6;
}

/* SEARCH + DOI */
.search-box, .doi-box {
  display: flex;
  gap: 10px;
  padding: 20px;
  justify-content: center;
}

input {
  padding: 10px;
  width: 300px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  background: #FFB612;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 4px;
  font-weight: bold;
}

button:hover {
  background: #eaa500;
}

/* STATUS */
#status {
  padding: 10px 20px;
  margin: 10px 20px;
  border-radius: 4px;
  background: #f9f9f9;
  border: 1px solid #ccc;
  display: none;
}

/* SECTIONS */
.section-title {
  margin: 20px;
  color: #333;
}

/* RESULTS */
#results, #related {
  padding: 0 20px 20px;
}

.card {
  background: white;
  padding: 15px;
  margin-bottom: 15px;
  border-left: 5px solid #007A4D;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  cursor: pointer;
}

.card:hover {
  background: #f8f8f8;
}

.card h3, .card h4 {
  margin: 0 0 8px 0;
  color: #007A4D;
}

.card h3:hover, .card h4:hover {
  text-decoration: underline;
}

.card small {
  color: gray;
  font-size: 0.9em;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 15px;
  background: #002c1f;
  color: white;
  font-size: 0.85rem;
}

/* RESPONSIVE */
@media (max-width: 600px) {
  .search-box, .doi-box {
    flex-direction: column;
    align-items: center;
  }

  input {
    width: 100%;
  }

  .institutions {
    flex-wrap: wrap;
  }
}