/* Menú lateral en vista árbol (includes/menu-arbol.php) */
.menu-arbol {
    padding: 20px 16px 16px;
    background: #f5f8fc;
    border: 1px solid #e3e9f1;
    border-radius: 14px;
}
.menu-arbol .menu-arbol__titulo {
    margin: 0 !important;
    padding: 0 4px 12px;
    border-bottom: 1px solid #dbe3ee;
    color: #0057b4 !important;
    font-size: 0.8rem !important;
    font-weight: 700;
    letter-spacing: 0.12em;
    line-height: 1.2 !important;
    text-transform: uppercase;
}
.menu-arbol__grupo { border-bottom: 1px solid #dbe3ee; }
.menu-arbol__grupo summary {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 44px;
    margin-top: 8px;
    padding: 8px 8px 8px 26px;
    background: #e6f0fb;
    border-radius: 6px;
    color: #14213d;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.3;
    list-style: none;
    cursor: pointer;
}
.menu-arbol__grupo:not([open]) summary {
    margin-bottom: 8px;
    background: none;
}
.menu-arbol__grupo summary::-webkit-details-marker { display: none; }
/* Triángulo: apunta a la derecha cerrado y hacia abajo abierto */
.menu-arbol__grupo summary::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 10px;
    margin-top: -4px;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 6px solid #0057b4;
    transition: transform 0.15s ease;
}
.menu-arbol__grupo[open] summary::before { transform: rotate(90deg); }
.menu-arbol__grupo summary:focus-visible,
.menu-arbol a:focus-visible {
    outline: 2px solid #0057b4;
    outline-offset: -2px;
}
.menu-arbol__grupo ul {
    margin: 4px 0 12px 8px !important;
    padding: 0 !important;
    border-left: 3px solid #0057b4;
    list-style: none;
}
.menu-arbol__grupo li { margin: 0; padding: 0; }

/* Los textos se leen como enlaces: azul, negrita y flecha, con subrayado al pasar el ratón */
.menu-arbol__grupo li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 40px;
    padding: 8px 10px 8px 14px;
    border-radius: 0 6px 6px 0;
    color: #0057b4 !important;
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.3;
    text-decoration: none !important;
    transition: background 0.15s ease;
}
.menu-arbol__grupo li a::after {
    content: "";
    flex-shrink: 0;
    width: 7px;
    height: 7px;
    margin-right: 2px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.15s ease;
}
.menu-arbol__grupo li a:hover {
    background: #eaf2fc;
    color: #003d80 !important;
}
.menu-arbol__grupo li a:hover span {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.menu-arbol__grupo li a:hover::after { transform: translateX(3px) rotate(45deg); }
.menu-arbol__grupo li a.is-activo {
    background: #0057b4;
    color: #fff !important;
}
.menu-arbol .menu-arbol__todos {
    display: block;
    padding: 14px 4px 2px;
    color: #0057b4 !important;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: underline !important;
    text-underline-offset: 3px;
}
.menu-arbol .menu-arbol__todos:hover { color: #003d80 !important; }

@media (prefers-reduced-motion: reduce) {
    .menu-arbol__grupo li a,
    .menu-arbol__grupo li a::after,
    .menu-arbol__grupo summary::before { transition: none; }
}