/* Estilos generales */
body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f7fc;
    margin: 0;
    padding: 0;
}

/* Encabezado */
h3 {
    color: #0056b3;
}

/* Cards */
.card {
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease-in-out;
}

.card:hover {
    transform: scale(1.05);
}

.card-body {
    background-color: #fff;
    padding: 20px;
}

.card-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
}

.card-text {
    font-size: 1rem;
    color: #555;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

/* Estilos del formulario */
form {
    margin-top: 10px;
}

/* Diseño del filtro por grado */
select {
    width: 200px;
    padding: 8px;
    margin-right: 10px;
}

input[type="submit"] {
    padding: 8px 16px;
    background-color: #28a745;
    border: none;
    color: white;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #218838;
}

/* Estilo del dashboard */
.dashboard-card {
    border: 1px solid #ddd;
    padding: 20px;
    margin-top: 20px;
    border-radius: 8px;
    background-color: #ffffff;
}

.dashboard-card h4 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.dashboard-card .metric {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

/* Mejorar la vista de las gráficas */
canvas {
    max-width: 100%;
    height: auto;
}