body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #e4e8f0);
    color: #333;
}

header, footer {
    background-color: #3a4a5c;
    color: #f8f9fa;
    text-align: center;
    padding: 1.5rem 1rem;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

main {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.galeria {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.imagen {
    background: #ffffff;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    cursor: pointer;
    overflow: hidden;
}

.imagen:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.imagen img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.4s ease;
}

.imagen:hover img {
    transform: scale(1.03);
}

.imagen p {
    margin: 12px 0 10px;
    font-weight: 600;
    font-size: 1rem;
    color: #3a4a5c;
}

.imagen button {
    padding: 8px 18px;
    border: none;
    background-color: #3498db;
    color: white;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 3px 6px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.imagen button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(41, 128, 185, 0.4);
}