* {
    box-sizing: border-box;
}

/* FONDO GENERAL */
body {
    margin: 0;
    padding: 0;
    font-family: "Poppins", sans-serif;
    background: linear-gradient(135deg, #ff9a9e, #fecfef);

    display: flex;
    justify-content: center;
    align-items: center;

    min-height: 100vh;
}

/* TARJETA */
.card {
    background: #ffffffcc;
    backdrop-filter: blur(8px);
    padding: 2rem;
    border-radius: 25px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);

    width: 90%;
    max-width: 360px;
}

/* TITULO */
h1 {
    color: #ff4f81;
    font-size: 1.8rem;
    margin-bottom: 0.4rem;
}

/* TEXTO */
.card p {
    margin-top: 0;
    margin-bottom: 1.2rem;
    color: #555;
}

/* INPUTS */
input {
    width: 100%;
    padding: 0.9rem;
    border-radius: 12px;
    border: none;
    margin-bottom: 0.9rem;
    font-size: 1rem;
    background: #ffe8f0;
    outline: none;
}

/* BOTON */
button {
    width: 100%;
    padding: 0.9rem;
    border: none;
    border-radius: 12px;
    background: #ff4f81;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:active {
    transform: scale(0.97);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

/* CORAZON */
.corazon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    animation: latido 1.5s infinite ease-in-out;
}

/* ANIMACION */
@keyframes latido {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* 📱 AJUSTES SOLO PARA TELÉFONO */
@media (max-width: 480px) {
    .card {
        padding: 1.5rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .corazon {
        font-size: 2.5rem;
    }
}