/* Institutional Header Styles */
:root {
    --institutional-blue: #003876;
    --institutional-blue-dark: #002857;
    --institutional-blue-light: #0056b3;
    --header-height: 72px;
}

/* Header Container */
.institutional-header {
    background: var(--institutional-blue);
    position: relative;
    /* Ensure header and its submenus appear above banners/hero sections */
    z-index: 99999;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: visible;
}

/* Main container */
.header-container {
    max-width: 1600px;
    margin: 0 auto;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

/* Logo sections */
.logo-left, .logo-right {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    height: 100%;
}

.logo-left img {
    height: 40px;
    width: auto;
}

.logo-right img {
    height: 26px;
    width: auto;
}

/* Navigation section */
.nav-section {
    flex: 1;
    display: flex;
    justify-content: center;
    margin: 0 20px;
}

.nav-section, .header-container {
    /* allow visible overflow for dropdowns */
    overflow: visible;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.2px;
    white-space: nowrap;
}

.nav-link:hover {
    background: var(--institutional-blue-light);
    border-radius: 4px;
}

/* Submenu styles */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100000;
}

.nav-item:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu-item {
    display: block;
    padding: 10px 16px;
    color: var(--institutional-blue);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.submenu-item:hover {
    background: #f5f7fa;
    color: var(--institutional-blue-dark);
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

/* Responsive design */
@media (max-width: 1200px) {
    .nav-link {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .header-container {
        padding: 0 15px;
    }
}

@media (max-width: 991px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-section {
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--institutional-blue);
        padding: 10px;
        display: none;
        margin: 0;
    }

    .nav-section.active {
        display: block;
    }

    .main-nav {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-item {
        margin: 0;
    }

    .nav-link {
        padding: 12px 16px;
        display: block;
        border-radius: 4px;
    }

    .submenu {
        position: static;
        background: var(--institutional-blue-dark);
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
    }

    .nav-item.active .submenu {
        display: block;
    }

    .submenu-item {
        color: white;
        padding: 10px 24px;
    }

    .submenu-item:hover {
        background: var(--institutional-blue-light);
        color: white;
    }

    .logo-left img {
        height: 36px;
    }

    .logo-right img {
        height: 24px;
    }
}

/* Animations and transitions */
.nav-link, .submenu {
    transition: all 0.3s ease;
}

/* Active states */
.nav-item.active .nav-link {
    background: var(--institutional-blue-light);
    border-radius: 4px;
}

/* Clean overlay rules (moderate z-index without !important)
   These give the header a reasonable stacking level above most page content
   while avoiding global !important overrides that mask deeper stacking-context issues. */
.institutional-header {
    z-index: 1050;
    position: relative;
    overflow: visible;
}
.institutional-header .submenu {
    z-index: 1060;
}
.institutional-header .nav-section,
.institutional-header .header-container {
    overflow: visible;
}

/* Estilo para el enlace del menú activo */
.nav-item.current > .nav-link {
    color: #ffc107; /* Un color amarillo/dorado para destacar */
    font-weight: 700;
}