body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background: #f8fafc;
  color: #333;
}

.topbar {
  background: #003366;
  color: white;
  padding: 5px 0;
  text-align: center;
  font-size: 0.9em;
}

header {
  background: #003366;
  color: white;
  padding: 15px 0;
}

header .nav-area {
  width: 85%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

navstyle {
   font-size: 12px;
}

header h1 {
  margin: 0;
  font-size: 1.8em;
}

nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

.container {
  width: 85%;
  margin: auto;
  padding: 20px 0;
}

h2 {
  color: #003366;
  border-bottom: 3px solid #ffcc00;
  padding-bottom: 5px;
}

.paper-card {
  background: white;
  padding: 15px;
  border-radius: 5px;
  margin-bottom: 15px;
  border-left: 5px solid #0056d2;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.paper-card h3 {
  margin-top: 0;
  color: #0056d2;
}

.paper-card .authors {
  font-style: italic;
  color: #555;
}

.download-btn {
  display: inline-block;
  padding: 8px 12px;
  background: #ffcc00;
  color: black;
  border-radius: 3px;
  text-decoration: none;
  font-weight: bold;
  margin-top: 10px;
}

.download-btn:hover {
  background: #e6b800;
}

form.submit-form {
  background: white;
  padding: 20px;
  border-radius: 5px;
  border-left: 5px solid #0056d2;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

label {
  display: block;
  margin-top: 10px;
  font-weight: bold;
}

input, textarea, button {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  box-sizing: border-box;
}

button {
  background: #0056d2;
  color: white;
  border: none;
  cursor: pointer;
  margin-top: 15px;
}

button:hover {
  background: #003f99;
}

.message {
  background: #d1f7d6;
  color: #256029;
  padding: 10px;
  border-radius: 5px;
}