* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #2c3e50;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 15px 0;
}

nav ul li {
    margin: 0 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #f1c40f; 
}


main {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    margin-bottom: 40px;
}

.contenido-animal {
    display: flex;
    align-items: center; 
    gap: 20px; 
    margin-top: 15px;
}

.contenido-animal img {
    max-width: 300px; 
    height: auto;
    border-radius: 8px; 
}

h1, h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
}

.grid-tarjetas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.tarjeta {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease; 
}

.tarjeta:hover {
    transform: scale(1.05); 
    box-shadow: 0 8px 15px rgba(0,0,0,0.2);
}

.tarjeta a {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    background-color: #27ae60;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

article {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
}

.btn-subir {
    display: block;
    width: 200px;
    margin: 30px auto;
    text-align: center;
    padding: 10px;
    background-color: #34495e;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

form {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.grupo-form {
    margin-bottom: 15px;
}

.grupo-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.grupo-form input[type="text"],
.grupo-form input[type="email"],
.grupo-form input[type="tel"],
.grupo-form select,
.grupo-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

footer {
    background-color: #2c3e50;
    color: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 20px;
    margin-top: auto;
}

footer a {
    color: #f1c40f;
    text-decoration: none;
}