body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-container, .dashboard-container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
}

.dashboard-container {
    max-width: 800px;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
}

input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 1rem;
}

.btn:hover {
    background-color: #45a049;
}

.error {
    color: #f44336;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: #ffebee;
    border-radius: 4px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.logout-btn {
    padding: 0.5rem 1rem;
    background-color: #f44336;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}

.logout-btn:hover {
    background-color: #d32f2f;
}

.student-info table {
    width: 100%;
    border-collapse: collapse;
}

.student-info th, .student-info td {
    padding: 0.75rem;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

.student-info th {
    background-color: #f9f9f9;
    width: 30%;
}