/* Navbar pública y menú lateral (antes en línea en detalles/navbar y en la portada). Escritorio: igual que siempre; móvil (< 992 px): barra compacta y panel lateral táctil. */
/* --- MENÚS DESPLEGABLES PRINCIPALES (NAVBAR) --- */
.dropdown-investigacion, .dropdown-divulgacion, .dropdown-multimedia {
    position: relative;
}
.dropdown-investigacion > a, .dropdown-divulgacion > a, .dropdown-multimedia > a {
    text-decoration: none !important;
    border-bottom: none !important;
}

.dropdown-menu-custom {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: all 0.2s ease-in-out;
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    list-style: none;
    padding: 8px 0;
    min-width: 210px;
    box-shadow: 0px 12px 30px rgba(0, 0, 0, 0.25);
    border-radius: 10px;
    z-index: 999;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.dropdown-menu-custom::before {
    content: '';
    position: absolute;
    top: -15px;
    left: 0;
    width: 100%;
    height: 15px;
}

.dropdown-investigacion:hover .dropdown-menu-custom,
.dropdown-divulgacion:hover .dropdown-menu-custom,
.dropdown-multimedia:hover .dropdown-menu-custom {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu-custom li a {
    display: block;
    padding: 9px 16px;
    color: #2c3e50 !important;
    text-decoration: none !important;
    border-bottom: none !important;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s ease-in-out;
}
.dropdown-menu-custom li a:hover {
    background-color: #e8f5e9;
    color: #2e7d32 !important;
    padding-left: 20px;
}

/* --- SIDEBAR LATERAL FLOTANTE --- */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 998;
}
.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.app-sidebar {
    position: fixed;
    top: 80px;
    right: -340px;
    width: 270px;
    max-height: calc(100vh - 100px);
    background: #ffffff;
    box-shadow: -10px 10px 40px rgba(0, 0, 0, 0.3);
    transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: 18px;
    border-radius: 16px;
    overflow-y: auto;
}
.app-sidebar.active {
    right: 20px;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 10px;
    margin-bottom: 12px;
}
.sidebar-header h3 {
    font-size: 16px;
    color: #1a202c;
    font-weight: 600;
    margin: 0;
}
.sidebar-close {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #718096;
    transition: color 0.2s;
}
.sidebar-close:hover {
    color: #2e7d32;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.sidebar-item-group {
    display: flex;
    flex-direction: column;
}

.sidebar-menu > li > a, .sidebar-dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    padding: 9px 12px;
    color: #2d3748;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s ease;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

.sidebar-menu > li > a:hover, .sidebar-dropdown-toggle:hover {
    background-color: #f7fafc;
    color: #2e7d32;
}

.sidebar-dropdown-toggle .arrow {
    margin-left: auto;
    transition: transform 0.2s ease;
    font-size: 11px;
    color: #a0aec0;
}

.sidebar-submenu {
    list-style: none;
    padding-left: 28px;
    margin: 2px 0 4px 0;
    display: none;
    flex-direction: column;
    gap: 3px;
    border-left: 2px solid #e2e8f0;
    margin-left: 18px;
}

.sidebar-item-group.open .sidebar-submenu {
    display: flex;
}
.sidebar-item-group.open .arrow {
    transform: rotate(180deg);
    color: #2e7d32;
}

.sidebar-submenu li a {
    font-size: 13px;
    color: #4a5568;
    text-decoration: none;
    padding: 6px 10px;
    border-radius: 6px;
    display: block;
    transition: all 0.15s ease;
}
.sidebar-submenu li a:hover {
    background: #f0fdf4;
    color: #2e7d32;
    font-weight: 600;
    padding-left: 14px;
}

.menu-container {
    position: relative;
    display: inline-block;
}
.menu-btn {
    cursor: pointer;
    padding: 5px;
}

/* ======================================================================================
   Botones del menú (antes eran <span> y <div>: ahora son <button> con aria-*; aspecto idéntico)
   ====================================================================================== */
.menu-btn,
.nav-buscar-btn,
.sidebar-dropdown-toggle {
    background: none;
    border: 0;
    -webkit-tap-highlight-color: transparent;
}
.menu-btn,
.nav-buscar-btn { font: inherit; }
/* el tamaño y el peso del texto del acordeón ya los define su regla original: solo se hereda la familia */
.sidebar-dropdown-toggle { font-family: inherit; line-height: inherit; }
.menu-btn { line-height: inherit; }
.sidebar-dropdown-toggle { text-align: left; }
.menu-btn:focus-visible,
.nav-buscar-btn:focus-visible,
.sidebar-close:focus-visible,
.sidebar-dropdown-toggle:focus-visible,
.sidebar-menu a:focus-visible,
.sidebar-redes a:focus-visible,
.sidebar-buscar input:focus-visible {
    outline: 2px solid #2e7d32;
    outline-offset: 2px;
}
.social-icons .nav-buscar-btn { color: #e0e0e0; cursor: pointer; transition: color 0.3s, transform 0.3s; }
.social-icons .nav-buscar-btn:hover { color: #4da6ff; transform: scale(1.2); }

/* Solo móvil: buscador del menú, redes del panel y botón de búsqueda (en escritorio no existen) */
.nav-buscar-btn,
.sidebar-buscar,
.sidebar-sin-resultados,
.sidebar-redes { display: none; }
.sidebar-sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ======================================================================================
   MÓVIL Y TABLETA (< 992 px): barra compacta + panel lateral táctil
   ====================================================================================== */
@media (max-width: 991.98px) {
    /* Barra superior: logo a la izquierda; búsqueda y hamburguesa a la derecha. Altura estable, sin scroll horizontal. */
    header { padding: 8px 14px; height: 46px; gap: 8px; }
    .logo-nav img { height: 40px; width: 40px; object-fit: contain; }
    header nav,
    header .social-icons > a { display: none; }
    .social-icons { gap: 2px; font-size: 20px; }
    .nav-buscar-btn,
    .menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 44px;
        min-height: 44px;
        padding: 0;
        border-radius: 10px;
        color: #e0e0e0;
        cursor: pointer;
    }
    .nav-buscar-btn:hover, .menu-btn:hover { transform: none; }
    .nav-buscar-btn:active, .menu-btn:active { background: rgba(255, 255, 255, 0.14); }

    /* El scroll del fondo se bloquea mientras el menú está abierto */
    html.menu-abierto, body.menu-abierto { overflow: hidden; }

    .sidebar-overlay { background: rgba(0, 0, 0, 0.55); }

    /* Panel: a toda la altura, desde la derecha */
    .app-sidebar {
        box-sizing: border-box;
        top: 0;
        right: 0;
        width: min(88vw, 360px);
        height: 100vh;
        height: 100dvh;
        max-height: none;
        border-radius: 18px 0 0 18px;
        padding: 14px 14px calc(18px + env(safe-area-inset-bottom, 0px));
        transform: translateX(105%);
        visibility: hidden;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0s linear 0.3s;
    }
    .app-sidebar.active {
        right: 0;
        transform: none;
        visibility: visible;
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0s;
    }

    .sidebar-header { margin-bottom: 10px; }
    .sidebar-header h3 { font-size: 18px; }
    .sidebar-close {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 44px;
        min-height: 44px;
        border-radius: 10px;
        font-size: 20px;
    }
    .sidebar-close:active { background: #edf2f7; }

    /* Buscador del menú: ancho completo, texto de 16 px (iOS no hace zoom) y placeholder completo */
    .sidebar-buscar { display: block; position: relative; margin: 0 0 8px; }
    .sidebar-buscar i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: #718096; font-size: 14px; pointer-events: none; }
    .sidebar-buscar input {
        width: 100%;
        box-sizing: border-box;
        min-height: 46px;
        padding: 0 14px 0 40px;
        border: 1px solid #cbd5e0;
        border-radius: 10px;
        background: #f7fafc;
        color: #1a202c;
        font-size: 16px;
        font-family: inherit;
    }
    .sidebar-buscar input::placeholder { color: #718096; opacity: 1; }
    .sidebar-sin-resultados { display: block; margin: 4px 4px 10px; font-size: 14px; color: #4a5568; }
    .sidebar-sin-resultados[hidden] { display: none; }

    /* Zonas táctiles de al menos 44 px */
    .sidebar-menu { gap: 2px; }
    .sidebar-menu > li > a,
    .sidebar-dropdown-toggle { min-height: 48px; padding: 10px 12px; font-size: 16px; gap: 14px; }
    .sidebar-menu > li > a:active,
    .sidebar-dropdown-toggle:active { background-color: #e8f5e9; color: #1b5e20; }
    .sidebar-dropdown-toggle .arrow { font-size: 13px; }
    .sidebar-submenu { margin-left: 22px; padding-left: 18px; gap: 2px; }
    .sidebar-submenu li a { box-sizing: border-box; min-height: 44px; display: flex; align-items: center; padding: 10px 12px; font-size: 15px; }
    .sidebar-submenu li a:active { background: #e8f5e9; color: #1b5e20; }
    .sidebar-submenu li a:hover { padding-left: 12px; }

    /* Redes sociales al final del panel */
    .sidebar-redes {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 14px;
        padding-top: 14px;
        border-top: 1px solid #e2e8f0;
    }
    .sidebar-redes a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        border: 1px solid #e2e8f0;
        border-radius: 12px;
        color: #2d3748;
        font-size: 20px;
        text-decoration: none;
    }
    .sidebar-redes a:active { background: #e8f5e9; color: #1b5e20; border-color: #2e7d32; }
}

@media (prefers-reduced-motion: reduce) {
    .app-sidebar,
    .sidebar-overlay,
    .sidebar-dropdown-toggle .arrow,
    .nav-buscar-btn,
    .menu-btn { transition: none !important; }
}