body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #eef4ff, #ffffff);
    color: #333;
}

header {
    background: linear-gradient(90deg, var(--azul), var(--morado));
    color: white;
    text-align: center;
}
.navbar-brand {
    color: black !important;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
header h1 {
    font-size: 2.6em;
    margin: 0;
}

section {
    max-width: 1100px;
    margin: auto;
    padding: 40px;
}

.card {
    background: white;
    border-radius: 22px;
    padding: 30px;
    margin-bottom: 35px;
    box-shadow: 0 12px 28px rgba(0,0,0,0.12);
}

.card h2 {
    color: var(--azul);
}

.lsc {
    margin-top: 20px;
    background: #e8f0fe;
    border: 2px dashed var(--azul);
    border-radius: 16px;
    padding: 18px;
    text-align: center;
    font-weight: bold;
    color: black;
}

.pasos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.paso {
    background: #f7f9ff;
    border-radius: 18px;
    padding: 20px;
    text-align: center;
}

.paso span {
    font-size: 3em;
}

/* ACTIVIDAD */
.pregunta {
    margin-top: 30px;
}

.respuestas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 15px;
}

.respuesta {
    background: #f7f9ff;
    border: 3px solid var(--azul);
    border-radius: 20px;
    padding: 22px;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.respuesta:hover {
    background: #eaf2ff;
}

.respuesta.correcta {
    background: var(--verde);
    color: white;
    border-color: var(--verde);
}

.respuesta.incorrecta {
    background: var(--rojo);
    color: white;
    border-color: var(--rojo);
}

/* RETO FINAL */
.reto {
    background: linear-gradient(135deg, var(--azul), var(--verde));
    color: white;
    border-radius: 28px;
    padding: 45px;
    text-align: center;
}

.mision {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.objetivo {
    background: rgba(255,255,255,0.2);
    border-radius: 18px;
    padding: 22px;
}
/* SUBTÍTULOS DE VIDEO CENTRADOS */
video::cue {
    text-align: center;
    font-size: 1.1em;
    color: white;
    background: rgba(0, 0, 0, 0.6);
}
h1 {
    font-size: 3em;
     text-align: center;
}

h2 {
    font-size: 2.2em;
     text-align: center;
}

h3 {
    font-size: 1.6em;
     text-align: center;
}

h4 {
    font-size: 1.3em;
     text-align: center;
}

h5 {
    font-size: 1.15em;
     text-align: center;
}


/* ✅ RESPONSIVE */

@media (max-width: 1024px) {

    .section1,
    .section2,
    .section3 {
        padding-bottom: 40px;
    }

    .cont-carrusel1 {
        margin-top: 40px;
    }
}

@media (max-width: 768px) {

    .titulo-cuadro,
    .title-Cuadro2,
    .title-Cuadro3 {
        width: 90%;
    }

    .icono-info {
        width: 60px;
        height: 60px;
    }
}

.reto {
    background: linear-gradient(135deg, #4c97ff, #855cd6);
    color: white;
    padding: 60px 30px;
    border-radius: 25px;
    text-align: center;
    margin-top: 50px;
}

.reto h2 {
    font-weight: 700;
    margin-bottom: 15px;
}

.reto p {
    font-size: 18px;
    opacity: 0.95;
}

.mision {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.objetivo {
    background: rgba(255, 255, 255, 0.15);
    padding: 20px;
    border-radius: 18px;
    backdrop-filter: blur(8px);
    transition: 0.3s ease;
}

.objetivo:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
}



.respuesta {
    cursor: pointer;
    transition: 0.3s ease;
    min-height: 150px;
}

.respuesta:hover {
    transform: translateY(-5px);
}

.correcta {
    background-color: #d4edda !important;
    border: 2px solid #28a745;
}

.incorrecta {
    background-color: #f8d7da !important;
    border: 2px solid #dc3545;
}

.icono-resultado {
    font-size: 28px;
    margin-top: 10px;
}


.card-antes {
    background: white;
    border-radius: 20px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
    transition: 0.3s ease;
}

.card-antes:hover {
    transform: translateY(-5px);
}

.icono-grande {
    font-size: 50px;
    margin-bottom: 10px;
}

.paso {
    font-size: 14px;
    font-weight: bold;
    color: #6c63ff;
    margin-bottom: 10px;
}