:root {
    --primary: #0AB7D6;
    /* Turquesa */
    --secondary: #3DDAD7;
    /* Aqua */
    --accent: #3DCCC7;
    /* Verde-agua */
    --dark: #2F4858;
    /* Azul oscuro */
    --light: #E6F4F1;
    /* Gris claro / fondo suave */
}

body {
    font-family: "Poppins", sans-serif;
    margin: 0;
    padding: 0;
    background: var(--light) url("imagenes/fondo.jpg") no-repeat center/cover;
    color: var(--dark);
}

table {
    width: 100%;
    background: var(--primary);
    border-radius: 0 0 15px 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

td {
    padding: 15px;
    align-items: center;
    text-align: center;
}

a {
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    color: white;
    transition: 0.3s;
    text-align: center;
}

a:hover {
    color: var(--dark);
}

h1 {
    font-size: 3.5rem;
    margin: 40px 0 20px;
    color: var(--primary);
}

h2 {
    font-size: 5rem;
    margin: 20px 0 10px;
    color: var(--dark);
}

p {
    font-size: 1.2rem;
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    border-radius: 15px;
    line-height: 1.8;
}

img {
    margin-top: 20px;
    max-width: 500px;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

input {
    margin: 10px;
    background-color: rgb(207, 243, 240);
    border: 1px solid rgb(174, 203, 243);
    border-radius: 5px;
}


input[type="submit"]{
    background-color: bisque;
}

input:hover{
    background-color: rgb(80, 181, 199);
}

#registro{
    background-color: transparent;
    padding: 10px;
    width: 50%;
    border-collapse: collapse; 
    margin: 20px auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

@media (max-width: 1024px) {
    #registro {
        width: 70%;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    select {
        max-width: 250px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }

    #registro {
        width: 90%;
        padding: 15px;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    select {
        width: 100%;
    }

    p {
        font-size: 1rem;
        margin: 15px;
        padding: 15px;
    }

    img {
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }

    nav a {
        font-size: 0.9rem;
    }

    #registro td {
        display: block;
        width: 100%;
        text-align: left;
        padding: 10px 0;
    }

    #registro input[type="submit"] {
        width: 100%;
    }
}