body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
    margin: 0;
    font-size: 2.5em;
}

.search-container {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.search-container input[type="text"],
.search-container button,
.search-container select {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
}

.search-container input[type="text"] {
    flex-grow: 1;
    max-width: 400px;
}

.search-container button {
    background-color: #007bff;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-container button:hover {
    background-color: #0056b3;
}

.search-container select {
    background-color: white;
    border: 1px solid #ddd;
}

main {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 20px auto;
}

.news-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease;
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid #eee;
}

.news-card-content {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-card h2 {
    font-size: 1.3em;
    margin-top: 0;
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-card p {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 10px;
}

.news-card .source-date {
    font-size: 0.8em;
    color: #999;
    margin-top: auto; /* Empuja la fuente y fecha al final */
    padding-top: 10px;
    border-top: 1px solid #eee;
}

.news-card a {
    display: inline-block;
    background-color: #28a745;
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.9em;
    margin-top: 10px;
    align-self: flex-start; /* Alinea el botón al inicio */
    transition: background-color 0.3s ease;
}

.news-card a:hover {
    background-color: #218838;
}

.loading-message, .error-message {
    grid-column: 1 / -1; /* Ocupa todo el ancho */
    text-align: center;
    font-size: 1.2em;
    color: #555;
    margin-top: 50px;
}

.no-results-message {
    grid-column: 1 / -1; /* Ocupa todo el ancho */
    text-align: center;
    font-size: 1.2em;
    color: #555;
    margin-top: 50px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    main {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        padding: 15px;
    }

    h1 {
        font-size: 2em;
    }

    .search-container {
        flex-direction: column;
        align-items: center;
    }

    .search-container input[type="text"],
    .search-container button,
    .search-container select {
        width: 90%;
        max-width: none;
    }
}