body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to right, #eef2f7, #e6ecf3);
    color: #2c3e50;
}

header {
    background: linear-gradient(90deg, #003973, #e5e5be);
    color: #fff;
    padding: 50px 20px;
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    letter-spacing: 1px;
}

main {
    padding: 50px 20px;
    max-width: 1200px;
    margin: 40px auto;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

footer {
    background-color: #1a1a1a;
    color: #bbb;
    text-align: center;
    padding: 20px;
    position: fixed;
    bottom: 0;
    width: 100%;
    font-size: 0.95rem;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.2);
}

button {
    background: linear-gradient(90deg, #0066cc, #004999);
    color: #fff;
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background: linear-gradient(90deg, #0050a3, #003477);
    transform: scale(1.06);
}

.galeria {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.imagen {
    background-color: #f9fbfd;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    width: 260px;
    height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.imagen:hover {
    transform: translateY(-12px);
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.18);
}

.imagen img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background-color: #dce3eb;
    border-bottom: 1px solid #ccc;
}

.imagen p {
    padding: 14px;
    font-size: 1.05rem;
    color: #333;
    text-align: center;
    flex-grow: 1;
}

.imagen button {
    background-color: #007acc;
    margin: 0 16px 18px 16px;
    padding: 10px;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.imagen button:hover {
    background-color: #005999;
}

#flip,
#panel {
    background-color: #d7e6ff;
    color: #003366;
    border-radius: 14px;
    padding: 18px 24px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    max-width: 360px;
    margin: 40px auto;
    text-align: center;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

#panel {
    display: none;
    padding: 32px;
    background-color: #f0f6ff;
    border: 1px solid #a5c4f4;
    border-radius: 14px;
    box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.04);
    font-size: 1rem;
    color: #444;
}

.rotar {
    transform: rotate(360deg);
    transition: transform 1s ease;
}

.flip3d {
    transform: rotateY(180deg);
    transition: transform 0.8s ease-in-out;
}

.zoom {
    transform: scale(1.2);
    transition: transform 0.5s ease;
}

#panel9 {
    background-color: #d0e2ff;
    transition: background-color 1s ease;
}