/* Estilos globales */
body {
    font-family: 'PT Sans', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: black;
}

/* Encabezado */
header {
    background-color: #002147;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
}

.logo {
    height: 40px;
}

/* Navegación */
nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    padding: 0;
    margin: 0;
    align-items: center;
}

nav ul li {
    position: relative;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    display: block;
}

nav a:hover {
    background-color: #004080;
    border-radius: 5px;
}

/* Submenú */
.subitems {
    display: none;
    position: absolute;
    background-color: white;
    color: black;
    min-width: 160px;
    box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.2);
    top: 100%;
    left: 0;
    z-index: 1;
}

.submenu:hover .subitems {
    display: block;
}

.subitems li a {
    color: black;
}

/* Main */
main {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px 10px;
}

/* Contenedor del cronograma */
.cronograma-container {
    background: #ffffff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 1000px;
}

/* Título */
h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

/* Tabla */
.cronograma {
    width: 100%;
    border-collapse: collapse;
}

/* Encabezados */
.cronograma thead th {
    background-color: #004aad;
    color: white;
    padding: 15px;
    font-size: 16px;
}

/* Celdas */
.cronograma td, .cronograma th {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: center;
}

/* Filas alternadas */
.cronograma tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

/* Fila de descanso */
.descanso td {
    background-color: #ffcc00;
    font-weight: bold;
    color: #333;
    font-size: 18px;
}

/* Celdas vacías */
.cronograma td:empty {
    background-color: #e6eef5;
}

/* Responsive */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }

    .cronograma-container {
        padding: 15px;
    }

    h1 {
        font-size: 24px;
    }

    .cronograma thead th, .cronograma td {
        padding: 8px;
        font-size: 12px;
    }
}