/* =====================================================================
   Toque moderno: menú translúcido, franjas animadas, filtros y vidrio.
   Se carga después de sitio.css y ajusta su apariencia.
   ===================================================================== */
:root { --radio: 16px; --radio-chico: 10px; --suave: cubic-bezier(.22,.61,.36,1); }

/* ---------- menú translúcido ---------- */
.encabezado { background: rgba(215,7,29,.86); -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4); border-bottom: 1px solid rgba(255,255,255,.12); }
.encabezado.compacto { background: rgba(190,6,26,.8); }
/* en la portada el menú flota sobre la imagen y se vuelve rojo translúcido al bajar */
.con-portada .encabezado { position: fixed; top: 0; left: 0; right: 0; z-index: 1030; background: linear-gradient(180deg, rgba(40,0,20,.55), rgba(40,0,20,0)); border-bottom-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.con-portada .encabezado.compacto { background: rgba(215,7,29,.82); -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4); border-bottom-color: rgba(255,255,255,.12); }
.encabezado .nav-link { border-radius: 2rem; transition: background .3s; }
.encabezado .nav-link:hover { background: rgba(255,255,255,.14); }
.encabezado .bi-chevron-down { display: inline-block; transition: transform .35s var(--suave); }
.encabezado .dropdown:hover .bi-chevron-down { transform: rotate(180deg); }

/* submenú: aparece suavemente, con vidrio esmerilado */
@media (min-width: 992px) {
  .encabezado .dropdown-menu { display: block !important; opacity: 0; visibility: hidden; transform: translateY(14px) scale(.98); transform-origin: top left;
    transition: opacity .35s var(--suave), transform .35s var(--suave), visibility .35s;
    background: rgba(255,255,255,.82); -webkit-backdrop-filter: blur(18px) saturate(1.6); backdrop-filter: blur(18px) saturate(1.6);
    border: 1px solid rgba(255,255,255,.6); border-radius: var(--radio); padding: .6rem; margin-top: .4rem !important; box-shadow: 0 20px 50px rgba(40,0,20,.25); }
  .encabezado .dropdown:hover > .dropdown-menu, .encabezado .dropdown:focus-within > .dropdown-menu { opacity: 1; visibility: visible; transform: none; }
  /* puente invisible para que el submenú no se cierre al bajar el mouse */
  .encabezado .dropdown::after { content: ""; position: absolute; left: 0; right: 0; top: 100%; height: .7rem; }
}
.encabezado .dropdown-item { border-radius: var(--radio-chico); position: relative; padding-left: 1.3rem; transition: background .25s, color .25s, padding-left .25s; }
.encabezado .dropdown-item::before { content: ""; position: absolute; left: .55rem; top: 50%; width: 4px; height: 0; background: var(--rojo); border-radius: 4px; transform: translateY(-50%); transition: height .25s; }
.encabezado .dropdown-item:hover { background: rgba(215,7,29,.08); padding-left: 1.6rem; }
.encabezado .dropdown-item:hover::before { height: 60%; }
/* menú del celular: panel de vidrio con opciones que aparecen escalonadas */
@media (max-width: 991.98px) {
  .encabezado .navbar-collapse { background: rgba(120,0,15,.55); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); border-radius: var(--radio); margin-top: .6rem; padding: .8rem; }
  .encabezado .navbar-collapse.show .nav-item { animation: entrarArriba .45s var(--suave) both; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(2) { animation-delay: .04s; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(3) { animation-delay: .08s; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(4) { animation-delay: .12s; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(5) { animation-delay: .16s; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(6) { animation-delay: .2s; }
  .encabezado .navbar-collapse.show .nav-item:nth-child(7) { animation-delay: .24s; }
  .encabezado .dropdown-menu { background: rgba(255,255,255,.1); border-radius: var(--radio-chico); }
  .encabezado .navbar-toggler { border: 0; }
  .con-portada .encabezado { background: rgba(215,7,29,.85); }
}
.collapsing { transition: height .45s var(--suave); }

/* ---------- franja de logotipos en movimiento ---------- */
.marquesina { position: relative; overflow: hidden; display: flex; padding: 1.6rem 0; background: rgba(255,255,255,.07);
  border-top: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquesina .pista { display: flex; align-items: center; gap: 3rem; padding: 0 1.5rem; margin: 0; list-style: none; flex-shrink: 0; animation: desplazar 38s linear infinite; }
.marquesina:hover .pista { animation-play-state: paused; }
.marquesina img { height: 92px; width: auto; background: #fff; padding: .55rem .8rem; border-radius: var(--radio-chico); box-shadow: 0 8px 22px rgba(60,0,10,.25);
  filter: grayscale(.85) contrast(1.05); opacity: .9; transition: filter .45s, opacity .45s, transform .45s var(--suave); }
.marquesina li:nth-child(odd) img { animation: flotar 5s ease-in-out infinite; }
.marquesina li:nth-child(even) img { animation: flotar 5s ease-in-out 2.5s infinite; }
.marquesina img:hover { filter: none; opacity: 1; transform: scale(1.1); }
@keyframes desplazar { to { transform: translateX(-100%); } }
@keyframes flotar { 0%, 100% { translate: 0 0; } 50% { translate: 0 -6px; } }

/* ---------- fotografías con filtro duotono animado ---------- */
.foto-filtro { position: relative; overflow: hidden; border-radius: var(--radio); margin: 0; box-shadow: var(--sombra); isolation: isolate; background: #5a1030; }
.foto-filtro img { display: block; width: 100%; height: 100%; object-fit: cover; filter: grayscale(.35) contrast(1.08) saturate(1.1); transform: scale(1.04); transition: transform 1.2s var(--suave), filter .8s; }
.foto-filtro::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; mix-blend-mode: color;
  background: linear-gradient(125deg, #d7071d, #8b2fa0, #062C74, #d7071d); background-size: 300% 300%; opacity: .55; animation: degradado 12s ease infinite; transition: opacity .8s; }
.foto-filtro .brillo { position: absolute; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.35) 50%, transparent 65%); transform: translateX(-120%); }
.foto-filtro:hover img, a:hover .foto-filtro img { transform: scale(1.12); filter: none; }
.foto-filtro:hover::after, a:hover .foto-filtro::after { opacity: .1; }
.foto-filtro:hover .brillo, a:hover .foto-filtro .brillo { animation: destello 1.1s ease; }
.foto-filtro.cuadrada { aspect-ratio: 1; background: #fff; }
.foto-marco .foto-filtro { position: relative; z-index: 1; }
.foto-marco::before { border-radius: var(--radio); }
@keyframes degradado { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
@keyframes destello { to { transform: translateX(120%); } }

.institucion .nombre { display: flex; justify-content: space-between; align-items: center; gap: .5rem; text-decoration: none; margin-top: 1rem; padding-bottom: .5rem; border-bottom: 1px solid rgba(255,255,255,.35); position: relative; }
.institucion .nombre::after { content: ""; position: absolute; left: 0; bottom: -1px; height: 2px; width: 0; background: #fff; transition: width .5s var(--suave); }
.institucion:hover .nombre::after { width: 100%; }
.institucion .nombre .bi { transition: transform .3s; }
.institucion:hover .nombre .bi { transform: translate(4px, -4px); }

/* ---------- carteles: tarjetas redondeadas con inclinación 3D ---------- */
.tarjeta-evento { perspective: 900px; }
.tarjeta-evento:hover { transform: none; }
.tarjeta-evento .imagen-marco { border-radius: var(--radio); transition: transform .6s var(--suave), box-shadow .6s; box-shadow: 0 12px 28px rgba(40,0,15,.25); will-change: transform; }
.tarjeta-evento:hover .imagen-marco { box-shadow: 0 26px 50px rgba(40,0,15,.4); }
.tarjeta-evento .velo, .tarjeta-evento .sin-cartel { border-radius: var(--radio); }
.carril { scroll-snap-type: none; gap: 1.8rem; padding: 1.2rem .4rem 1.4rem; scrollbar-width: none; scroll-behavior: auto; }
.carril::-webkit-scrollbar { display: none; }
.carril-progreso { height: 3px; background: rgba(255,255,255,.2); border-radius: 3px; overflow: hidden; }
.bloque:not(.bloque-rojo):not(.bloque-azul) .carril-progreso { background: rgba(0,0,0,.08); }
.carril-progreso span { display: block; height: 100%; width: 0; background: #fff; border-radius: 3px; }
.bloque:not(.bloque-rojo):not(.bloque-azul) .carril-progreso span { background: var(--rojo); }
.carril-flechas .btn { border-radius: 50%; width: 46px; height: 46px; padding: 0; display: inline-flex; align-items: center; justify-content: center; }
.btn { border-radius: 2rem; }
.buscador-portada .btn { border-radius: 0 2rem 2rem 0; }

/* ---------- Seminario: panel de vidrio ---------- */
.bloque-spec { min-height: 640px; }
.bloque-spec::before { background: linear-gradient(90deg, rgba(10,15,70,.65) 0%, rgba(10,15,70,.2) 60%, rgba(10,15,70,0) 100%); }
.panel-vidrio { max-width: 640px; padding: 2.6rem; border-radius: 22px; color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(140deg, rgba(255,255,255,.2), rgba(255,255,255,.06)); border: 1px solid rgba(255,255,255,.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3); backdrop-filter: blur(16px) saturate(1.3); box-shadow: 0 30px 60px rgba(5,10,50,.35); }
.panel-vidrio::before { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -90px; border-radius: 50%; background: radial-gradient(circle, rgba(215,7,29,.55), transparent 70%); animation: latido 6s ease-in-out infinite; }
.panel-vidrio > * { position: relative; }
.panel-vidrio h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); margin-bottom: 1rem; max-width: none; }
.panel-vidrio .cifras { margin: 1.4rem 0 1.8rem; }
@keyframes latido { 0%, 100% { transform: scale(1); opacity: .8; } 50% { transform: scale(1.25); opacity: 1; } }

/* ---------- botón para volver arriba ---------- */
.volver-arriba { position: fixed; right: 1.4rem; bottom: 1.4rem; z-index: 1040; width: 52px; height: 52px; border-radius: 50%; border: 0; color: #fff; font-size: 1.2rem;
  background: linear-gradient(135deg, var(--rojo), #8b2fa0); box-shadow: 0 12px 30px rgba(120,0,40,.4); opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: opacity .4s, transform .4s var(--suave), visibility .4s; }
.volver-arriba.visible { opacity: 1; visibility: visible; transform: none; }
.volver-arriba:hover { transform: translateY(-4px); }

/* ---------- pie de página moderno ---------- */
.pie { position: relative; overflow: hidden; color: rgba(255,255,255,.8);
  background: radial-gradient(1200px 500px at 85% 0%, rgba(139,47,160,.45), transparent 60%), linear-gradient(160deg, #0a2f7a 0%, #062C74 45%, #04194a 100%); }
.pie::before { content: ""; position: absolute; right: -140px; bottom: -180px; width: 560px; height: 560px; border-radius: 50%; opacity: .14; mix-blend-mode: screen;
  background: url("../uploads/2022/04/actividades.jpg") 85% center / cover; animation: girar 90s linear infinite; }
.pie > * { position: relative; }
.pie-onda { display: block; width: 100%; height: 60px; color: #0a2f7a; }
.pie-llamado { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; padding: 2.2rem 2.4rem; border-radius: 22px;
  background: linear-gradient(120deg, var(--rojo), #a0127a 70%, #6b3fa0); background-size: 200% 200%; animation: degradado 10s ease infinite; box-shadow: 0 24px 50px rgba(0,0,0,.3); }
.pie-llamado .titulo { color: #fff; font-size: clamp(1.3rem, 2.4vw, 1.8rem); margin: 0 0 .3rem; font-weight: 500; }
.pie-llamado p { margin: 0; color: rgba(255,255,255,.9); }
.pie h2 { color: #fff; font-size: .78rem; text-transform: uppercase; letter-spacing: .16em; margin-bottom: 1.2rem; display: flex; align-items: center; gap: .6rem; }
.pie h2::before { content: ""; width: 18px; height: 2px; background: #ff5266; }
.pie-ligas a { display: inline-block; transition: transform .25s, color .25s; }
.pie-ligas a:hover { transform: translateX(6px); color: #ff9aa5; text-decoration: none; }
.pie-redes { display: flex; gap: .6rem; }
.pie-redes a { width: 44px; height: 44px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); transition: background .3s, transform .3s; }
.pie-redes a:hover { background: var(--rojo); transform: translateY(-4px); text-decoration: none; }
.pie-dato { display: flex; gap: .8rem; margin-bottom: .9rem; }
.pie-dato .bi { color: #ff8f9b; font-size: 1.1rem; }
.pie-banner { border-radius: var(--radio); transition: transform .5s var(--suave); }
.pie-banner:hover { transform: rotate(-2deg) scale(1.03); }
.pie-legal { background: rgba(0,0,0,.25); color: rgba(255,255,255,.55); border-top: 1px solid rgba(255,255,255,.08); }
.pie-legal a { color: rgba(255,255,255,.75); }
@keyframes girar { to { transform: rotate(360deg); } }

/* ---------- esquinas suaves en tarjetas y bloques internos ---------- */
.destacado, .panel-filtros, .tarjeta-contacto, .tarjeta-tesis, .meridiano-imagen, .volumen, .integrante .foto, .cartel-evento, .ficha-tesis, .datos-evento { border-radius: var(--radio); }
.ficha-tesis { overflow: hidden; }
@media (min-width: 992px) {
  .autora-foto { border-radius: var(--radio) 0 0 var(--radio); }
  .autora-panel { border-radius: 0 var(--radio) var(--radio) 0; }
  .autora.invertida .autora-foto { border-radius: 0 var(--radio) var(--radio) 0; }
  .autora.invertida .autora-panel { border-radius: var(--radio) 0 0 var(--radio); }
}
@media (max-width: 991.98px) {
  .autora-foto { border-radius: var(--radio) var(--radio) 0 0; }
  .autora-panel { border-radius: 0 0 var(--radio) var(--radio); }
}
.form-contacto .form-control { border-radius: var(--radio-chico); }
.form-contacto.en-rojo .form-control { border-radius: 0; }

@media (prefers-reduced-motion: reduce) {
  .marquesina .pista { animation: none; flex-wrap: wrap; justify-content: center; }
  .marquesina .pista[aria-hidden] { display: none; }
  .foto-filtro::after, .pie::before, .panel-vidrio::before, .pie-llamado { animation: none; }
}
.portada-titulo { max-width: 9.8em; }
.pie a.btn-blanco { color: var(--rojo); }
.pie a.btn-blanco:hover { color: #fff; text-decoration: none; }
.pie a.btn { text-decoration: none; }

/* submenú más blanco y legible (menos transparencia) */
@media (min-width: 992px) {
  .encabezado .dropdown-menu { background: rgba(255,255,255,.97); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-color: #fff; }
  .encabezado .dropdown-item { color: #2b2b2e; }
}
@media (max-width: 991.98px) {
  .encabezado .navbar-collapse { background: rgba(255,255,255,.97); box-shadow: 0 16px 40px rgba(40,0,20,.25); }
  .encabezado .navbar-collapse .nav-link { color: #2b2b2e !important; }
  .encabezado .navbar-collapse .nav-link:hover, .encabezado .navbar-collapse .nav-link.active { color: var(--rojo) !important; background: rgba(215,7,29,.07); }
  .encabezado .navbar-collapse .dropdown-menu { background: #f6f4f8; }
  .encabezado .navbar-collapse .dropdown-item { color: #2b2b2e; }
  .encabezado .navbar-collapse .btn.text-white { color: #2b2b2e !important; }
}

/* fotos del equipo: formato vertical para que se vea el rostro completo */
.integrante .foto { aspect-ratio: 4 / 5; background-position: center 45%; }

/* logotipos institucionales: fijos, sin desplazamiento */
.marquesina { justify-content: center; -webkit-mask-image: none; mask-image: none; }
.marquesina .pista { animation: none; flex-wrap: wrap; justify-content: center; row-gap: 1.5rem; }
.marquesina img, .marquesina li img { animation: none; }

/* ---------- tarjetas del repositorio (eventos y trabajos en una sola cuadrícula) ---------- */
.recurso { position: relative; height: 100%; background: #fff; border-radius: var(--radio); overflow: hidden; display: flex; flex-direction: column;
  box-shadow: 0 6px 20px rgba(20,10,40,.08); border-top: 4px solid var(--rojo); transition: transform .35s var(--suave), box-shadow .35s; }
.recurso:hover { transform: translateY(-5px); box-shadow: var(--sombra); }
.recurso-tesis { border-top-color: var(--azul); }
.recurso-mini { position: relative; height: 150px; overflow: hidden; background: #2d0a1a; }
.recurso-mini::before { content: ""; position: absolute; inset: -20px; background: var(--img) center / cover; filter: blur(14px) brightness(.7); }
.recurso-mini img { position: relative; width: 100%; height: 100%; object-fit: contain; transition: transform .6s var(--suave); }
.recurso:hover .recurso-mini img { transform: scale(1.07); }
.recurso-cuerpo { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; flex-grow: 1; }
.recurso-cats { font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; color: var(--rojo); font-weight: 500; line-height: 1.4; }
.recurso-tesis .recurso-cats { color: var(--azul); }
.recurso-grado { align-self: flex-start; margin-top: .5rem; font-size: .7rem; background: var(--fondo-suave); color: var(--azul); padding: .15rem .6rem; border-radius: 1rem; }
.recurso h3 { font-size: 1rem; line-height: 1.35; margin: .6rem 0; flex-grow: 1; }
.recurso h3 a { color: var(--texto); text-decoration: none; }
.recurso h3 a::after { content: ""; position: absolute; inset: 0; }
.recurso:hover h3 a { color: var(--rojo); }
.recurso-fecha { font-size: .82rem; color: var(--gris); }

/* ---------- Publicaciones ---------- */
.publicacion { position: relative; height: 100%; display: flex; flex-direction: column; background: #fff; border-radius: var(--radio); overflow: hidden;
  box-shadow: 0 6px 20px rgba(20,10,40,.08); transition: transform .35s var(--suave), box-shadow .35s; }
.publicacion:hover { transform: translateY(-6px); box-shadow: var(--sombra); }
.publicacion-portada { position: relative; aspect-ratio: 2 / 3; background: #efeaf3; overflow: hidden; }
.publicacion-portada img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--suave); }
.publicacion:hover .publicacion-portada img { transform: scale(1.05); }
.publicacion-portada.grande { border-radius: var(--radio); box-shadow: 0 18px 40px rgba(40,0,20,.25); }
.portada-diseno { height: 100%; display: flex; flex-direction: column; justify-content: space-between; padding: 1.4rem 1.2rem; color: #fff;
  background: linear-gradient(160deg, rgba(6,44,116,.9), rgba(215,7,29,.85)), url("../uploads/2022/04/actividades.jpg") 70% center / cover; }
.portada-diseno .tipo { font-size: .7rem; text-transform: uppercase; letter-spacing: .14em; opacity: .9; }
.portada-diseno .nombre { font-size: 1.25rem; line-height: 1.2; font-weight: 500; display: -webkit-box; -webkit-line-clamp: 7; -webkit-box-orient: vertical; overflow: hidden; }
.portada-diseno .pie { font-size: .68rem; opacity: .8; border-top: 1px solid rgba(255,255,255,.4); padding-top: .6rem; }
.publicacion .sello { position: absolute; top: .8rem; left: .8rem; background: var(--rojo); color: #fff; font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; padding: .25rem .7rem; border-radius: 2rem; }
.publicacion-cuerpo { padding: 1rem 1.1rem 1.2rem; display: flex; flex-direction: column; flex-grow: 1; }
.publicacion-tipo { font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: var(--rojo); font-weight: 500; }
.publicacion h3 { font-size: 1rem; line-height: 1.35; margin: .45rem 0; flex-grow: 1; }
.publicacion h3 a { color: var(--texto); text-decoration: none; }
.publicacion h3 a::after { content: ""; position: absolute; inset: 0; }
.publicacion:hover h3 a { color: var(--rojo); }
.publicacion-autores { font-size: .86rem; color: var(--azul); }
.publicacion-editorial { font-size: .8rem; color: var(--gris); margin-top: .2rem; }
.vacio-publicaciones { text-align: center; padding: 4rem 1.5rem; background: #fff; border-radius: 22px; border: 1px dashed #e3c3c7; }
.vacio-publicaciones .bi { font-size: 3rem; color: var(--rojo); display: block; margin-bottom: 1rem; }