/* --- Contenedor General --- */
#level-container {
    padding: 60px 0;
    position: relative;
    z-index: 10;
}

#level-title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 2rem;
    text-transform: uppercase;
    background: var(--primary-gradient, linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Acordeón Estilo Glass --- */
.accordion-glass {
    --bs-accordion-bg: transparent; /* Quita el fondo blanco por defecto de bootstrap */
    --bs-accordion-border-color: rgba(255, 255, 255, 0.1);
}

.accordion-glass .accordion-item {
    background: transparent;
    border: none;
    margin-bottom: 1rem;
}

/* Botón del Acordeón (El encabezado) */
.accordion-glass .accordion-button {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    color: white;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px !important; /* Siempre redondeado */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

/* Estado: Botón abierto o Hover */
.accordion-glass .accordion-button:not(.collapsed),
.accordion-glass .accordion-button:hover {
    background: rgba(79, 70, 229, 0.2); /* Un tinte morado suave */
    border-color: #4f46e5;
    color: white;
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.3);
}

/* Flecha del acordeón (Icono) */
.accordion-glass .accordion-button::after {
    filter: invert(1); /* Vuelve la flecha negra a blanca */
    transform: scale(0.8);
}

.accordion-glass .accordion-button:not(.collapsed)::after {
    filter: invert(1) drop-shadow(0 0 5px #fff); /* Brillo al abrir */
}

/* Cuerpo del Acordeón */
.accordion-glass .accordion-collapse {
    border: none;
}

.accordion-glass .accordion-body {
    background: rgba(15, 23, 42, 0.4);
    border-radius: 15px;
    margin-top: 5px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* --- Lista de Temas --- */
.topic-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Dos columnas en pantallas grandes */
    gap: 10px 20px;
}

.topic-list li {
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    padding: 8px 0;
    transition: transform 0.2s;
}

.topic-list li:hover {
    transform: translateX(5px);
    color: #fff;
}

/* Icono de Check personalizado */
.topic-list li i {
    color: #4f46e5; /* Color primario */
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    padding: 5px;
    font-size: 0.8rem;
    margin-right: 12px;
    box-shadow: 0 0 10px rgba(79, 70, 229, 0.2);
}