body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

#app {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #2c3e50;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
    margin-top: 0;
}

h3 {
    color: #34495e;
    margin-top: 25px;
}

h4 {
    color: #7f8c8d;
    margin-bottom: 15px;
}

label {
    display: block;
    margin: 10px 0 5px;
    font-weight: 600;
    color: #555;
}

input[type="text"],
input[type="email"],
input[type="date"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    margin-bottom: 15px;
    box-sizing: border-box;
}

input:focus,
select:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.5);
}

select[multiple] {
    height: auto;
    min-height: 100px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin: 5px 0;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.student-item {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #3498db;
}

.form-section {
    margin-top: 30px;
}

.result {
    margin-top: 30px;
    padding: 15px;
    background: #e8f4fc;
    border-radius: 4px;
    border-left: 4px solid #3498db;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}