body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: #333;
}

/* Center container */
.container {
  max-width: 700px;
  margin: 60px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

/* Headings */
h1, h2, h3 {
  text-align: center;
  color: #2a5298;
}

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

/* Inputs */
input, select {
  width: 100%;
  padding: 12px;
  margin-top: 5px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 14px;
}

/* Buttons */
button {
  width: 100%;
  padding: 12px;
  background: #2a5298;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #1e3c72;
}

/* Table */
table {
  width: 100%;
  margin-top: 20px;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 10px;
}

th {
  background: #2a5298;
  color: white;
}

td, th {
  padding: 10px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}

/* GPA Box */
.gpa-box {
  margin-top: 20px;
  padding: 15px;
  background: #e8f5e9;
  color: #2e7d32;
  text-align: center;
  font-weight: bold;
  border-radius: 8px;
}

/* Messages */
#msg {
  text-align: center;
  margin-top: 10px;
  color: red;
}