/* --- Barra Lateral General --- */
#col1 {
    background-color: #ffffff;
    padding: 20px 15px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 25px;
    border: 1px solid #e0e0e0; /* Puedes considerar reducir este borde a 0px si quieres una apariencia más limpia */
}

/* --- Título de Categorías --- */
#buscador_categorias h4 {
    color: #333333;
    font-size: 19px;
    font-weight: 500; /* CAMBIO: Reducido de 600 a 500 para una fuente más ligera */
    margin-bottom: 15px;
    text-align: left;
    position: relative;
    padding-bottom: 0;
}

#buscador_categorias h4::after {
    content: none;
}

/* --- Acordeón de Categorías --- */
#accordion {
    border: none;
}

#accordion .panel {
    border: none;
    border-radius: 0;
    margin-bottom: 0;
    transition: all 0.3s ease;
    overflow: hidden;
}

#accordion .panel:last-child {
    margin-bottom: 0;
}

#accordion .panel-heading {
    background-color: #f9f9f9;
    padding: 10px 15px;
    border-bottom: 1px solid #eeeeee; /* Borde más claro y menos grueso, o incluso 'none' */
    cursor: pointer;
    position: relative;
    text-align: left !important;
}

#accordion .panel-title {
    margin: 0;
}

#accordion .panel-title a {
    color: #555555;
    text-decoration: none;
    display: block;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    padding-right: 25px;
}

#accordion .panel-title a:hover {
    color: #007bff;
}

/* Flecha para categorías desplegables */
#accordion .panel-heading a[data-toggle="collapse"]::after {
    font-family: 'Glyphicons Halflings';
    content: "\e080";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
    transition: transform 0.3s ease;
    color: #888;
}

#accordion .panel-heading a[data-toggle="collapse"].collapsed::after {
    transform: translateY(-50%) rotate(-90deg);
}

#accordion .panel-heading a[data-toggle="collapse"]:not(.collapsed)::after {
    transform: translateY(-50%) rotate(0deg);
}

/* --- Subcategorías --- */
#accordion .panel-collapse .panel-body {
    padding: 8px 20px;
    background-color: #fdfdfd;
    border-top: none;
    border-bottom: none;
}

#accordion .panel-body a {
    color: #666666;
    text-decoration: none;
    display: block;
    padding: 6px 0;
    font-size: 14px;
    font-weight: 400;
    transition: color 0.3s ease, padding-left 0.3s ease;
    text-align: left !important;
    border-bottom: 1px dashed #f0f0f0;
    margin-bottom: 0px;
    padding-bottom: 7px;
}

#accordion .panel-body a:last-child {
    border-bottom: none;
}

#accordion .panel-body a:hover {
    color: #007bff;
    padding-left: 5px;
}

/* --- Media Queries (Responsiveness) --- */
@media (max-width: 767px) {
    #col1 {
        padding: 15px 10px;
        border-radius: 0;
        box-shadow: none;
        border: none;
        border-bottom: 1px solid #eeeeee;
        margin-bottom: 15px;
    }

    #buscador_categorias h4 {
        font-size: 17px;
        font-weight: 400; /* CAMBIO: Reducido de 500 a 400 para móviles */
        margin-bottom: 12px;
    }

    #accordion .panel-heading {
        padding: 8px 12px;
    }

    #accordion .panel-title a {
        font-size: 14px;
        font-weight: 500;
    }

    #accordion .panel-body {
        padding: 6px 15px;
    }

    #accordion .panel-body a {
        font-size: 13px;
        font-weight: 400;
        padding: 5px 0;
        border-bottom: 1px dashed #f5f5f5;
    }
}