/* Configuración base y variables */
:root {
    --color-fondo: #f9f9f9;
    --color-texto: #333;
    --color-corporativo: #1a252c;
    --color-corporativo-claro: #2c3e50;
    --color-acento: #d4af37;
    /* Dorado lujo */
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    margin: 0;
    padding: 20px;
}

/* ACTIVIDAD 1: Galería Grid y Transiciones */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.destination-card {
    margin: 0;
    overflow: hidden;
    position: relative;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.destination-card picture img {
    width: 100%;
    height: auto;
    display: block;
    /* Transición matemática suave de 0.4s solicitada en la guía */
    transition: transform 0.4s ease;
}

.destination-info {
    position: absolute;
    bottom: 0;
    background: rgba(26, 37, 44, 0.9);
    color: white;
    width: 100%;
    padding: 15px;
    box-sizing: border-box;
    /* Opacidad inicial y transición de 0.4s */
    opacity: 0.9;
    transition: opacity 0.4s ease;
}

/* Efecto Hover interactivo */
.destination-card:hover picture img {
    transform: scale(1.05);
}

.destination-card:hover .destination-info {
    opacity: 1;
    /* Altera la opacidad al pasar el cursor */
}

/* ACTIVIDAD 2: Estilos de la Tabla Transaccional */
.pricing-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: white;
}

.pricing-table caption {
    padding: 10px;
    font-style: italic;
}

.pricing-table th,
.pricing-table td {
    padding: 15px;
    text-align: center;
    border: 1px solid #ddd;
}

/* Cabeceras con fondo corporativo oscuro */
.pricing-table thead th {
    background-color: var(--color-corporativo);
    color: white;
}

/* Coloración alterna de filas (Pseudoclase :nth-child) */
.pricing-table tbody tr:nth-child(even) {
    background-color: #f2f2f2;
}

/* ACTIVIDAD 3: Estilos del Formulario */
.booking-form {
    max-width: 600px;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.booking-form label {
    margin-top: 15px;
    font-weight: bold;
}

.booking-form input,
.booking-form select {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.btn-submit {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--color-acento);
    color: white;
    border: none;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.btn-submit:hover {
    background-color: #b5952f;
}