/* Header: Water-expert style */
header {
  background: linear-gradient(to right, #0d47a1, #1976d2); /* deep to sky blue */
  color: #ffffff;
  padding: 30px 20px;
  border-bottom: 4px solid #42a5f5;
}

/* Header layout */
.header-container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

.profile-pic {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Header text */
.header-text {
  flex: 1;
}

.header-text h1 {
  margin: 0;
  font-size: 2.4rem;
  color: #ffffff;
}

.header-text p {
  margin: 5px 0 15px;
  font-size: 1.1rem;
  color: #cde9ff;
}

/* Navigation bar */
nav a {
  color: #ffffff;
  text-decoration: none;
  margin-right: 18px;
  font-weight: bold;
  font-size: 1rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s ease;
}

nav a:hover {
  border-bottom: 2px solid #bbdefb;
}

/* Main content area */
main {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 20px 40px;
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

main h2 {
  color: #0d47a1;
  border-bottom: 2px solid #64b5f6;
  padding-bottom: 6px;
  margin-top: 30px;
}

main p {
  margin-bottom: 20px;
  font-size: 1.05rem;
}

/* Footer styling */
footer {
  background-color: #e0e0e0;
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
  color: #333;
}

footer a {
  color: #1565c0;
  text-decoration: none;
}

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