body {
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  margin: 0;
  color: #222;
}

.page-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 24px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

h1 {
  margin-top: 0;
}

form {
  display: grid;
  gap: 14px;
}

label {
  font-weight: 600;
}

input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccd0d5;
  border-radius: 8px;
  font-size: 1rem;
}

button {
  background: #0069ff;
  color: white;
  padding: 12px 18px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background: #0050d4;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}

th,
td {
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid #e6e8ec;
}

th {
  background: #fafbfc;
}

.alert-error {
  padding: 12px 14px;
  background: #fff1f0;
  border: 1px solid #ffccd5;
  color: #912d32;
  border-radius: 8px;
}

.alert-success {
  padding: 12px 14px;
  background: #f6ffed;
  border: 1px solid #b7eb8f;
  color: #52c41a;
  border-radius: 8px;
}

a {
  color: #0069ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}