/* Top Navbar ***************************************/
.navbar {
    background-color: var(--dark-blue);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #261379;
    position: relative;
    z-index: 3100; /* ensure top bar stays above page content */
}

/* Mobile behavior: hide tabs bar on small screens and use offcanvas */
@media (max-width: 991.98px) {
    .tabs-navbar {
        display: none !important;
    }
}

/* Offcanvas Mobile Menu */
.offcanvas-mobile {
    background: var(--dark-blue);
    color: var(--white);
    width: 85vw;
    max-width: 420px;
}

.offcanvas-mobile .offcanvas-header {
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.mobile-menu-list .list-group-item {
    background: transparent;
    color: var(--white);
    border: 0;
    padding: 14px 18px;
    font-weight: 500;
}

.mobile-menu-list .list-group-item:hover {
    background: rgba(255,255,255,0.08);
    color: var(--white);
}

/* Accordion styles inside offcanvas */
.offcanvas-mobile .accordion-button {
    background: transparent;
    color: var(--white);
    box-shadow: none;
    padding: 14px 18px;
}

.offcanvas-mobile .accordion-button::after {
    filter: invert(1) grayscale(1) brightness(2);
}

.offcanvas-mobile .accordion-item,
.offcanvas-mobile .accordion {
    background: transparent;
    border: 0;
}

.offcanvas-mobile .accordion-collapse {
    background: rgba(255,255,255,0.03);
}

.offcanvas-mobile .list-group-flush > .list-group-item {
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.offcanvas-mobile .list-group-flush > .list-group-item:last-child {
    border-bottom: 0;
}

.navbar-brand {
    color: var(--white);
    /* font-weight: 700; */
    font-size: 1rem;
}

.navbar-brand:hover {
    color: var(--white);
}

.contact-btn {
    color: var(--white);
    border: 1px solid var(--white);
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.contact-btn:hover {
    color: var(--white);
    transform: scale(1.1);
    transition: all 0.3s ease;
}

/* Tabs Navbar **************************************/
.tabs-navbar {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--main-blue) 100%);
    border-radius: 15px;
    margin-top: 1rem;
    padding: 8px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
    overflow: visible !important;
    position: relative;
    z-index: 3000; /* keep tabs and their dropdowns above underlying cards */
}

.nav-item {
    position: relative;
    margin: 0 2px;
}

.tabs-navbar .nav-link {
    color: var(--white);
    padding: 12px 18px;
    font-weight: 500;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tabs-navbar .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.tabs-navbar .nav-link:hover::before {
    left: 100%;
}

.tabs-navbar .nav-link.active {
    background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
    color: var(--dark-blue);
    border-radius: 12px;
    /* transform: translateY(-2px); */
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.tabs-navbar .nav-link:hover:not(.active) {
    color: var(--white);
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Dropdown Corregido *****************************/
.dropdown-menu {
    background: linear-gradient(135deg, var(--midnight-blue) 0%, #1a0080 100%);
    border: none;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    padding: 12px;
    backdrop-filter: blur(20px);
    overflow: hidden;
    
    /* POSICIONAMIENTO CORRECTO */
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 4000; /* above any content sections/cards */
    min-width: 280px;
    width: auto;
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Cuando el dropdown está visible */
.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Para dropdowns que se salen del viewport por la derecha */
@media (min-width: 769px) {
    .nav-item:nth-last-child(-n+3) .dropdown-menu {
        left: auto;
        right: 0;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.dropdown-item {
    color: var(--white);
    padding: 12px 16px;
    border-radius: 10px;
    margin: 2px 0;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    border: none;
    background: transparent;
}

.dropdown-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.4s ease;
}

.dropdown-item:hover::before {
    left: 100%;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
    /* transform: translateX(5px); */
    transform: scale(1.04);
    color: var(--white);
}

/* Iconos animados para dropdown toggle */
.dropdown-toggle::after {
    display: none !important;
}

.dropdown-icon {
    transition: transform 0.3s ease;
    margin-left: 5px;
    font-size: 0.8em;
}

.nav-item.show .dropdown-icon {
    transform: rotate(180deg);
}

/* Efectos hover mejorados */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--bg-light);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after:not(.active) {
    width: 80%;
}

.nav-link.active::after {
    width: 100%;
    background: var(--dark-blue);
}

/* Animación de carga */
.tabs-navbar {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .tabs-navbar {
        padding: 4px;
        overflow-x: auto;
        overflow-y: visible;
    }
    
    .tabs-navbar .nav-link {
        padding: 10px 12px;
        font-size: 0.9rem;
        white-space: nowrap;
    }
    
    .dropdown-menu {
        min-width: 250px;
        max-width: calc(100vw - 40px);
        left: 0 !important;
        right: auto !important;
    }
    
    /* Para elementos cerca del final en móvil */
    .nav-item:nth-last-child(-n+2) .dropdown-menu {
        left: auto !important;
        right: 0 !important;
    }
}

/* Fix adicional para Bootstrap 5 */
.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Asegurar que funcione con click también */
.dropdown.show .dropdown-menu {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}


/* David 2025-09-29: Nuevos cambios dropwdown */
.dropdown-menu {
    right: 0 !important;
    left: auto !important;
    margin-top: 0;
}