body {
  font-family: 'Inter', sans-serif;
  margin: 0;
  background-color: #f9fafb;
  color: #1f2937;
}

header {
  background: #111827;
  color: white;
  padding: 40px 20px;
  text-align: center;
}

nav {
  background: #1f2937;
  padding: 12px;
  text-align: center;
}

nav a {
  color: #d1d5db;
  margin: 0 15px;
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  color: white;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 40px 20px;
}

/* PROFILE LAYOUT */
.profile-section {
  display: flex;
  gap: 30px;
  align-items: center;
  flex-wrap: wrap;
}

.profile-section img {
  width: 150px;
  border-radius: 50%;
}

.profile-text {
  max-width: 600px;
}

/* CARD */
.card {
  background: white;
  padding: 20px;
  margin-top: 20px;
  border-radius: 12px;
  box-shadow: 0 6px 15px rgba(0,0,0,0.06);
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
}

/* BUTTON */
.button {
  display: inline-block;
  padding: 10px 18px;
  background: #2563eb;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 10px;
}

.button:hover {
  background: #1e40af;
}

/* PUBLICATION */
.pub-title {
  font-weight: 600;
}

.pub-links a {
  margin-right: 10px;
  font-size: 14px;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  background: #111827;
  color: #9ca3af;
  margin-top: 40px;
}