body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  color: #222;
}

nav {
  background: #222;
  padding: 12px 20px;
  display: flex;
  gap: 20px;
  align-items: center;
}
nav a {
  color: #fff;
  text-decoration: none;
  font-size: 15px;
}
nav a:hover {
  text-decoration: underline;
}
nav .logo {
  font-weight: bold;
  font-size: 18px;
  margin-right: auto;
}
main {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 16px;
}
h1 {
  margin-bottom: 16px;
  font-size: 24px;
}
p {
  margin-bottom: 10px;
  line-height: 1.5;
}
button {
  background: #222;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #444;
}
.search-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.search-bar input {
  flex: 1;
  min-width: 120px;
}
.card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 14px;
}
.card h3 {
  margin-bottom: 6px;
  font-size: 17px;
}
.card p {
  font-size: 14px;
  color: #555;
  margin: 2px 0;
}
#message {
  margin: 10px 0;
  font-size: 14px;
  color: green;
}
#error {
  color: red;
  margin: 10px 0;
  font-size: 14px;
}
table {
  width: 100%;
  border-collapse: collapse;
}

table td {
  border: 1px solid #ddd;
  padding: 12px;
  line-height: 1.6;
}