.text-gradient-animated {
    background: linear-gradient(270deg, var(--bs-primary), var(--bs-info), var(--bs-danger), var(--bs-primary));
    background-size: 600% 600%;
    -webkit-text-fill-color: transparent;
    animation: gradientMove 10s ease infinite;
    display: inline-block;
    transition: animation-duration 0.4s ease, transform 0.4s ease;
}

    /* Al pasar el mouse */
    .text-gradient-animated:hover {
        animation-duration: 3s; /* acelera la animación */
        transform: scale(1.05); /* un pequeño zoom */
    }

@keyframes gradientMove {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.custom-card {
    background: rgba(20, 20, 40, 0.6); /* similar a bg-card/50 */
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

    .custom-card:hover {
        border-color: #0d6efd; /* primary */
        transform: scale(1.05);
    }

.icon-box {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
}


.space-btn {
    background: linear-gradient(90deg, #4da6ff, #7f00ff, #ff4da6);
    background-size: 300% 300%;
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 50px;
    padding: 0.8rem 2.5rem;
    letter-spacing: 1px;
    box-shadow: 0 0 12px rgba(127, 0, 255, 0.6), 0 0 24px rgba(77, 166, 255, 0.4);
    transition: all 0.4s ease;
    animation: gradientShift 6s ease infinite;
}

    /* Hover con efecto explosión de luz */
    .space-btn:hover {
        transform: scale(1.08);
        box-shadow: 0 0 20px rgba(255, 77, 166, 0.9), 0 0 40px rgba(127, 0, 255, 0.8);
    }

/* Gradiente animado */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}




/* === Estilos espaciales para las tarjetas === */
.space-card {
    background: rgba(15, 15, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    box-shadow: 0 0 20px rgba(0, 200, 255, 0.1);
}

    .space-card:hover {
        transform: translateY(-10px) scale(1.02);
        box-shadow: 0 0 40px rgba(0, 200, 255, 0.3);
    }

/* Fondo degradado especial para cada misión */
.kepler-card .card-planet {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.2), rgba(0, 255, 200, 0.3));
    font-size: 3rem;
}

.k2-card .card-planet {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.25), rgba(255, 111, 0, 0.3));
    font-size: 3rem;
}

.tess-card .card-planet {
    background: linear-gradient(135deg, rgba(138, 43, 226, 0.25), rgba(0, 200, 255, 0.3));
    font-size: 3rem;
}

.header-title {
    color: var(--text-light);
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #ffffff, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}