/* ==========================================================================
   STARK ACADEMY — Estilos globales
   Paleta y tipografía inspiradas en la web de la Universidad Nacional del Santa
   (rojo carmesí #D82F4B, gris #333, PT Sans Narrow en títulos y menús).
   ========================================================================== */

:root {
  --rojo: #d82f4b;
  --rojo-oscuro: #b5203a;
  --rojo-profundo: #8e1a2e;
  --rojo-claro: #e8566d;
  --rojo-suave: #fbe9ec;
  --rojo-tenue: #fdf4f6;

  --texto: #333333;
  --texto-2: #575757;
  --texto-3: #7a7a7a;
  --borde: #e5e5e5;
  --borde-2: #cccccc;
  --fondo: #ffffff;
  --fondo-2: #f5f5f5;
  --fondo-3: #ececec;
  --carbon: #363636;
  --carbon-2: #2a2a2a;

  --azul: #1f6fb2;
  --verde: #23855b;
  --ambar: #b97f00;

  --f-titulo: "PT Sans Narrow", "Arial Narrow", "Roboto Condensed", sans-serif;
  --f-texto: "PT Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: Consolas, "Cascadia Mono", "Courier New", monospace;

  --ancho: 1200px;
  --radio: 4px;
  --sombra-1: 0 1px 2px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .05);
  --sombra-2: 0 12px 32px rgba(0, 0, 0, .12);

  --patron-hex: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='34.64' height='60' viewBox='0 0 34.64 60'%3E%3Cpath d='M17.32 0L34.64 10V30L17.32 40L0 30V10Z M17.32 40V60' fill='none' stroke='%23d82f4b' stroke-opacity='0.09'/%3E%3C/svg%3E");
  --patron-hex-blanco: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='34.64' height='60' viewBox='0 0 34.64 60'%3E%3Cpath d='M17.32 0L34.64 10V30L17.32 40L0 30V10Z M17.32 40V60' fill='none' stroke='%23ffffff' stroke-opacity='0.10'/%3E%3C/svg%3E");
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  font: 16px/1.6 var(--f-texto);
  color: var(--texto);
  background: var(--fondo);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--rojo); text-decoration: none; transition: color .15s; }
a:hover { color: var(--rojo-oscuro); }
h1, h2, h3, h4 { font-family: var(--f-titulo); line-height: 1.15; margin: 0 0 .5em; color: var(--texto); font-weight: 700; }
p { margin: 0 0 1em; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid rgba(216, 47, 75, .45); outline-offset: 2px; }
::selection { background: var(--rojo); color: #fff; }

.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .contenedor { padding: 0 24px; } }

[hidden] { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.icono { width: 1.15em; height: 1.15em; display: inline-block; vertical-align: -.2em; flex: none; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 16px/1 var(--f-titulo); letter-spacing: .6px; text-transform: uppercase;
  padding: 13px 22px; border-radius: var(--radio); border: 2px solid transparent;
  cursor: pointer; transition: background .18s, color .18s, border-color .18s, transform .18s;
  white-space: nowrap; text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn--rojo { background: var(--rojo); color: #fff; }
.btn--rojo:hover { background: var(--rojo-oscuro); color: #fff; }
.btn--borde { border-color: var(--rojo); color: var(--rojo); background: transparent; }
.btn--borde:hover { background: var(--rojo); color: #fff; }
.btn--blanco { background: #fff; color: var(--rojo); }
.btn--blanco:hover { background: var(--rojo-suave); color: var(--rojo-oscuro); }
.btn--fantasma { border-color: rgba(255, 255, 255, .75); color: #fff; background: transparent; }
.btn--fantasma:hover { background: #fff; color: var(--rojo); }
.btn--sm { padding: 9px 14px; font-size: 14.5px; }

/* ---------- Barra superior (roja, estilo UNS) ---------- */
.topbar { background: var(--rojo); color: #fff; font: 400 15px/1 var(--f-titulo); letter-spacing: .3px; }
.topbar__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 36px; }
.topbar__msg { margin: 0; opacity: .95; }
.topbar__msg strong { font-weight: 700; }
.topbar__links { display: flex; align-items: stretch; }
.topbar__links a {
  display: inline-flex; align-items: center; gap: 6px; color: #fff; text-transform: uppercase;
  padding: 10px 14px; border-left: 1px solid rgba(255, 255, 255, .22);
}
.topbar__links a:hover { background: rgba(0, 0, 0, .12); color: #fff; }
.topbar__links a.topbar__sub { background: rgba(0, 0, 0, .16); font-weight: 700; }
.topbar__links a.topbar__sub:hover { background: #fff; color: var(--rojo); }
@media (max-width: 720px) {
  .topbar__msg { display: none; }
  .topbar__links { width: 100%; justify-content: space-between; }
  .topbar__links a { padding: 10px 8px; font-size: 14px; border-left: 0; }
}

/* ---------- Cabecera ---------- */
.cabecera { position: sticky; top: 0; z-index: 60; background: #fff; border-bottom: 1px solid var(--borde); transition: box-shadow .2s; }
.cabecera.con-sombra { box-shadow: 0 4px 18px rgba(0, 0, 0, .08); }
.cabecera__in { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 82px; }

.marca { display: inline-flex; align-items: center; gap: 10px; color: var(--texto); flex: none; }
.marca:hover { color: var(--texto); }
.marca img { width: 58px; height: 58px; }
.marca__texto { display: flex; flex-direction: column; line-height: 1; }
.marca__nombre { font: 700 37px/.92 var(--f-titulo); color: var(--rojo); letter-spacing: 1.5px; }
.marca__sub { font: 700 11.5px/1 var(--f-texto); letter-spacing: 6.4px; color: var(--texto-2); margin-top: 5px; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 2px; }
.nav__item { position: relative; }
.nav__link {
  position: relative; display: inline-flex; align-items: center; gap: 4px;
  font: 400 19px/1 var(--f-titulo); text-transform: uppercase; letter-spacing: .3px;
  color: var(--texto); padding: 14px 11px; border: 0; background: none; cursor: pointer;
}
.nav__link::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 5px; height: 2px;
  background: var(--rojo); transform: scaleX(0); transform-origin: left; transition: transform .2s;
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--rojo); }
.nav__link:hover::after, .nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__link .icono { width: 14px; height: 14px; transition: transform .2s; }
.nav__item:hover > .nav__link .icono, .nav__item.abierto > .nav__link .icono { transform: rotate(180deg); }
.nav__cta { margin-left: 10px; }

.drop {
  position: absolute; top: 100%; left: 0; min-width: 320px; z-index: 5;
  background: #fff; border-top: 3px solid var(--rojo); box-shadow: var(--sombra-2);
  padding: 8px 0 10px; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .18s, transform .18s, visibility .18s;
}
.nav__item:hover > .drop, .nav__item:focus-within > .drop, .nav__item.abierto > .drop { opacity: 1; visibility: visible; transform: none; }
.drop__grupo { padding: 10px 18px 4px; font: 700 12px/1 var(--f-texto); letter-spacing: 1.2px; color: var(--texto-3); text-transform: uppercase; }
.drop a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 18px; color: var(--texto); font-size: 15px; line-height: 1.3; }
.drop a:hover { background: var(--rojo-tenue); color: var(--rojo); }
.drop__todos { border-top: 1px solid var(--borde); margin-top: 6px; padding-top: 10px !important; font: 700 15px var(--f-titulo) !important; text-transform: uppercase; color: var(--rojo) !important; }
.drop a[aria-current="page"] { color: var(--rojo); font-weight: 700; }
/* Menú de simuladores en tres columnas (una por curso) */
.drop--mega { min-width: 0; width: 660px; left: 50%; margin-left: -330px; }
.drop__cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.drop__col + .drop__col { border-left: 1px solid var(--borde); }

.chip {
  display: inline-flex; align-items: center; gap: 4px; font: 700 11px/1 var(--f-texto);
  letter-spacing: .6px; text-transform: uppercase; padding: 4px 7px; border-radius: 2px; white-space: nowrap;
}
.chip--pronto { background: var(--fondo-3); color: var(--texto-3); }
.chip--nuevo { background: var(--rojo); color: #fff; }

.hamburguesa {
  display: none; align-items: center; justify-content: center; width: 46px; height: 46px;
  border: 1px solid var(--borde); border-radius: var(--radio); background: #fff; color: var(--texto); cursor: pointer;
}
.hamburguesa .icono { width: 24px; height: 24px; }

@media (max-width: 1060px) {
  .hamburguesa { display: inline-flex; }
  .cabecera__in { min-height: 70px; }
  .marca img { width: 48px; height: 48px; }
  .marca__nombre { font-size: 31px; }
  .marca__sub { font-size: 10px; letter-spacing: 5.2px; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-top: 3px solid var(--rojo); box-shadow: 0 16px 30px rgba(0, 0, 0, .14);
    padding: 8px 16px 18px; max-height: calc(100vh - 110px); overflow: auto;
    opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .2s, transform .2s, visibility .2s;
  }
  .nav.abierto { opacity: 1; visibility: visible; transform: none; }
  .nav__link { width: 100%; justify-content: space-between; padding: 14px 4px; border-bottom: 1px solid var(--borde); font-size: 20px; }
  .nav__link::after { display: none; }
  .drop { position: static; min-width: 0; box-shadow: none; border-top: 0; padding: 4px 0 8px 8px; opacity: 1; visibility: visible; transform: none; display: none; }
  .nav__item:hover > .drop, .nav__item:focus-within > .drop { display: none; }
  .nav__item.abierto > .drop { display: block; }
  .drop--mega { width: auto; left: auto; margin-left: 0; }
  .drop__cols { grid-template-columns: minmax(0, 1fr); }
  .drop__col + .drop__col { border-left: 0; }
  .nav__cta { margin: 14px 0 0; }
}

/* ---------- Hero (inicio) ---------- */
.hero { position: relative; background: #f4f4f4 var(--patron-hex); background-size: 51.96px 90px; border-bottom: 1px solid var(--borde); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 18% 40%, rgba(255, 255, 255, .95) 0%, rgba(255, 255, 255, .55) 45%, rgba(255, 255, 255, 0) 75%);
  pointer-events: none;
}
.hero__in { position: relative; display: grid; grid-template-columns: 1.02fr 1fr; gap: 44px; align-items: center; padding-top: 56px; padding-bottom: 64px; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 10px; font: 700 14px/1 var(--f-titulo);
  text-transform: uppercase; letter-spacing: 1px; color: var(--rojo); background: #fff;
  border: 1px solid #f3cdd4; padding: 5px 12px 5px 5px; border-radius: 2px;
}
.hero__badge b { background: var(--rojo); color: #fff; padding: 5px 8px; border-radius: 1px; }
.hero__titulo { font: 700 clamp(56px, 7.6vw, 98px)/.88 var(--f-titulo); letter-spacing: 1px; margin: 20px 0 14px; text-transform: uppercase; }
.hero__titulo span { display: block; color: var(--rojo); }
.hero__lema { font: 400 clamp(23px, 2.6vw, 30px)/1.15 var(--f-titulo); color: var(--texto); margin: 0 0 14px; }
.hero__texto { color: var(--texto-2); max-width: 540px; font-size: 17px; }
.hero__acciones { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 34px; }
.hero__cifras { display: flex; flex-wrap: wrap; row-gap: 14px; }
.cifra { padding: 0 22px; border-left: 1px solid var(--borde-2); }
.cifra:first-child { padding-left: 0; border-left: 0; }
.cifra__num { font: 700 46px/1 var(--f-titulo); color: var(--rojo); }
.cifra__txt { font: 400 15px/1.2 var(--f-titulo); text-transform: uppercase; color: var(--texto-2); letter-spacing: .6px; }

.hero__paneles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; align-items: start; }
.panel-area {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 360px; padding: 16px 16px 18px; color: #fff; border-radius: var(--radio); overflow: hidden;
  background: linear-gradient(165deg, var(--rojo-claro) 0%, var(--rojo) 42%, var(--rojo-profundo) 100%);
  box-shadow: var(--sombra-2); transition: transform .25s, box-shadow .25s; isolation: isolate;
}
.panel-area::before { content: ""; position: absolute; inset: 0; background: var(--patron-hex-blanco); background-size: 51.96px 90px; z-index: -1; }
.panel-area:nth-child(2) { margin-top: 40px; }
.panel-area:nth-child(3) { margin-top: 14px; }
.panel-area:hover { transform: translateY(-6px); color: #fff; box-shadow: 0 18px 40px rgba(142, 26, 46, .35); }
.panel-area__ilus { position: absolute; top: 26px; left: 50%; width: 84%; transform: translateX(-50%); color: #fff; }
.panel-area__ilus svg { width: 100%; height: auto; }
.panel-area__nombre { font: 700 21px/1.02 var(--f-titulo); text-transform: uppercase; letter-spacing: .4px; }
.panel-area__accion { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; font: 400 15px/1 var(--f-titulo); text-transform: uppercase; letter-spacing: .5px; opacity: .92; }
.punto {
  position: absolute; width: 22px; height: 22px; border-radius: 50%; background: #fff;
  box-shadow: 0 0 0 7px rgba(255, 255, 255, .28); animation: latido 2.4s ease-in-out infinite;
}
.punto::after { content: ""; position: absolute; inset: 6px; border-radius: 50%; background: var(--rojo); }
@keyframes latido { 0%, 100% { box-shadow: 0 0 0 6px rgba(255, 255, 255, .28); } 50% { box-shadow: 0 0 0 13px rgba(255, 255, 255, .08); } }

@media (max-width: 980px) {
  .hero__in { grid-template-columns: 1fr; gap: 34px; padding-top: 40px; padding-bottom: 46px; }
  .panel-area { min-height: 280px; }
}
@media (max-width: 560px) {
  .hero__paneles { gap: 8px; }
  .panel-area { min-height: 200px; padding: 10px 10px 12px; }
  .panel-area:nth-child(n) { margin-top: 0; }
  .panel-area__ilus { top: 14px; width: 90%; }
  .panel-area__nombre { font-size: 15px; }
  .panel-area__accion { display: none; }
  .punto { width: 16px; height: 16px; }
  .punto::after { inset: 4px; }
  .cifra { padding: 0 14px; }
  .cifra__num { font-size: 36px; }
  .cifra__txt { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) { .punto { animation: none; } html { scroll-behavior: auto; } }

/* ---------- Secciones ---------- */
.seccion { padding: 64px 0; }
.seccion--gris { background: var(--fondo-2); }
.seccion__cab {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  border-bottom: 1px solid var(--borde); padding-bottom: 10px; margin-bottom: 30px;
}
.seccion__titulo { position: relative; font: 400 clamp(28px, 3.4vw, 36px)/1 var(--f-titulo); text-transform: uppercase; margin: 0; letter-spacing: .3px; }
.seccion__titulo::after { content: ""; position: absolute; left: 0; bottom: -11px; width: 70px; height: 3px; background: var(--rojo); }
.seccion__mas { display: inline-flex; align-items: center; gap: 6px; font: 400 17px/1 var(--f-titulo); text-transform: uppercase; color: var(--texto); white-space: nowrap; letter-spacing: .3px; }
.seccion__mas:hover { color: var(--rojo); }
.seccion__intro { color: var(--texto-2); max-width: 780px; margin: -6px 0 30px; font-size: 17px; }

/* ---------- Tarjetas de simulador ---------- */
.grid-sims { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sim-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--borde);
  border-radius: var(--radio); overflow: hidden; color: var(--texto);
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
a.sim-card:hover { box-shadow: var(--sombra-2); transform: translateY(-4px); border-color: transparent; color: var(--texto); }
.sim-card__img {
  position: relative; aspect-ratio: 16 / 9.4; display: grid; place-items: center; color: #fff; overflow: hidden; isolation: isolate;
  background: linear-gradient(150deg, var(--rojo-claro) 0%, var(--rojo) 45%, var(--rojo-profundo) 100%);
}
.sim-card__img::before { content: ""; position: absolute; inset: 0; background: var(--patron-hex-blanco); background-size: 51.96px 90px; z-index: -1; }
.sim-card__img svg { width: 50%; height: auto; transition: transform .35s; }
a.sim-card:hover .sim-card__img svg { transform: scale(1.06); }
.sim-card__area {
  position: absolute; left: 0; bottom: 0; background: #fff; color: var(--rojo);
  font: 700 13.5px/1 var(--f-titulo); text-transform: uppercase; letter-spacing: 1px; padding: 8px 12px;
}
.sim-card__cuerpo { display: flex; flex-direction: column; flex: 1; padding: 18px 20px 20px; }
.sim-card__titulo { font: 700 24px/1.08 var(--f-titulo); margin: 0 0 8px; }
.sim-card__desc { color: var(--texto-2); font-size: 15.5px; margin-bottom: 12px; }
.sim-card__lista { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 5px; font-size: 14.5px; color: var(--texto-2); }
.sim-card__lista li { display: flex; gap: 9px; align-items: baseline; }
.sim-card__lista li::before { content: ""; flex: none; width: 6px; height: 6px; background: var(--rojo); transform: translateY(-2px) rotate(45deg); }
.sim-card__pie {
  margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding-top: 14px; border-top: 1px solid var(--borde);
  font: 700 16px/1 var(--f-titulo); text-transform: uppercase; color: var(--rojo); letter-spacing: .5px;
}
.sim-card__pie .icono { transition: transform .2s; }
a.sim-card:hover .sim-card__pie .icono { transform: translateX(4px); }
.sim-card--pronto .sim-card__img { background: linear-gradient(150deg, #9a9a9a, #6f6f6f); }
.sim-card--pronto .sim-card__img svg { opacity: .8; }
.sim-card--pronto .sim-card__pie { color: var(--texto-3); }

.proximos { margin-top: 34px; padding: 22px 24px; background: var(--fondo-2); border-left: 4px solid var(--rojo); border-radius: var(--radio); }
.proximos h3 { font: 400 22px/1 var(--f-titulo); text-transform: uppercase; margin-bottom: 14px; }
.proximos__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 24px; }
.proximos__area { font: 700 13px/1 var(--f-texto); letter-spacing: 1px; text-transform: uppercase; color: var(--rojo); margin-bottom: 8px; }
.proximos ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; color: var(--texto-2); font-size: 15px; }
.proximos li { display: flex; gap: 8px; align-items: baseline; }
.proximos li::before { content: "›"; color: var(--rojo); font-weight: 700; }

@media (max-width: 980px) { .grid-sims { grid-template-columns: repeat(2, 1fr); } .proximos__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-sims, .proximos__grid { grid-template-columns: 1fr; } }

/* ---------- Banda de cifras (roja) ---------- */
.banda { position: relative; background: var(--rojo); color: #fff; isolation: isolate; }
.banda::before { content: ""; position: absolute; inset: 0; background: var(--patron-hex-blanco); background-size: 51.96px 90px; z-index: -1; }
.banda__in { display: grid; grid-template-columns: repeat(5, 1fr); text-align: center; padding-top: 30px; padding-bottom: 30px; }
.banda__dato { padding: 6px 10px; border-left: 1px solid rgba(255, 255, 255, .25); }
.banda__dato:first-child { border-left: 0; }
.banda__num { font: 700 42px/1 var(--f-titulo); }
.banda__txt { font: 400 17px/1.2 var(--f-titulo); text-transform: uppercase; letter-spacing: .6px; opacity: .95; margin-top: 4px; }
@media (max-width: 820px) {
  .banda__in { grid-template-columns: repeat(2, 1fr); row-gap: 18px; }
  .banda__dato { border-left: 0; }
  .banda__dato:last-child { grid-column: 1 / -1; }
}

/* ---------- Videos ---------- */
.videos { display: grid; grid-template-columns: 1.55fr 1fr; gap: 30px; align-items: start; }
.reproductor { position: relative; aspect-ratio: 16 / 9; background: #151515; border-radius: var(--radio); overflow: hidden; }
.reproductor iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.lite {
  position: absolute; inset: 0; width: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  border: 0; cursor: pointer; color: #fff; text-align: center; padding: 20px;
  background: radial-gradient(circle at 50% 40%, rgba(216, 47, 75, .55), rgba(20, 20, 20, .96) 70%), #151515;
}
.lite::before { content: ""; position: absolute; inset: 0; background: var(--patron-hex-blanco); background-size: 51.96px 90px; opacity: .6; }
.lite > * { position: relative; }
.lite__play {
  width: 84px; height: 84px; border-radius: 50%; display: grid; place-items: center; background: var(--rojo);
  box-shadow: 0 0 0 10px rgba(216, 47, 75, .25); transition: transform .2s, box-shadow .2s;
}
.lite__play .icono { width: 34px; height: 34px; margin-left: 5px; }
.lite:hover .lite__play { transform: scale(1.07); box-shadow: 0 0 0 16px rgba(216, 47, 75, .18); }
.lite__titulo { font: 700 26px/1.1 var(--f-titulo); text-transform: uppercase; letter-spacing: .5px; }
.lite__sub { font-size: 15px; opacity: .85; }
.lite--miniatura { background-size: cover; background-position: center; }
.lite--miniatura::before { background: linear-gradient(0deg, rgba(0, 0, 0, .65), rgba(0, 0, 0, .1)); opacity: 1; }

.pestanas { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.pestana {
  font: 700 15px/1 var(--f-titulo); text-transform: uppercase; letter-spacing: .5px; padding: 10px 14px;
  border: 1px solid var(--borde-2); background: #fff; color: var(--texto-2); border-radius: 2px; cursor: pointer; transition: .15s;
}
.pestana:hover { border-color: var(--rojo); color: var(--rojo); }
.pestana[aria-selected="true"] { background: var(--rojo); border-color: var(--rojo); color: #fff; }

.lista-videos { display: grid; gap: 14px; }
.video-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; align-items: start; color: var(--texto); background: none; border: 0; padding: 0; text-align: left; cursor: pointer; width: 100%; }
.video-item:hover { color: var(--rojo); }
.video-item__mini { position: relative; border-radius: 3px; overflow: hidden; background: #ddd; aspect-ratio: 16 / 9; }
.video-item__mini img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.video-item:hover .video-item__mini img { transform: scale(1.06); }
.video-item__mini .icono {
  position: absolute; left: 50%; top: 50%; width: 34px; height: 34px; padding: 8px 7px 8px 10px; transform: translate(-50%, -50%);
  background: rgba(216, 47, 75, .92); color: #fff; border-radius: 50%; box-sizing: border-box;
}
.video-item__titulo { font: 700 17px/1.18 var(--f-titulo); margin: 0 0 4px; }
.video-item__meta { font-size: 13px; color: var(--texto-3); text-transform: uppercase; letter-spacing: .5px; }

.grid-videos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-videos .video-item { grid-template-columns: 1fr; gap: 10px; }

@media (max-width: 980px) { .videos { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .grid-videos { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .video-item { grid-template-columns: 128px 1fr; } .grid-videos { grid-template-columns: 1fr; } .grid-videos .video-item { grid-template-columns: 128px 1fr; } }

/* ---------- Cursos (círculos, estilo "Campus UNS") ---------- */
.cursos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 20px; }
.curso { display: flex; flex-direction: column; align-items: center; text-align: center; color: var(--texto); }
.curso:hover { color: var(--rojo); }
.curso__circulo {
  width: 136px; height: 136px; margin-bottom: 14px; border-radius: 50%; display: grid; place-items: center; color: #fff;
  background: radial-gradient(circle at 32% 28%, var(--rojo-claro), var(--rojo) 52%, var(--rojo-profundo));
  box-shadow: 0 0 0 6px #fff, 0 0 0 7px var(--borde-2); transition: transform .25s, box-shadow .25s;
}
.curso:hover .curso__circulo { transform: scale(1.05); box-shadow: 0 0 0 6px #fff, 0 0 0 8px var(--rojo); }
.curso__circulo .icono { width: 56px; height: 56px; }
.curso__nombre { font: 700 18px/1.12 var(--f-titulo); text-transform: uppercase; letter-spacing: .3px; }
.curso__meta { font-size: 13px; color: var(--texto-3); margin-top: 4px; }
@media (max-width: 860px) { .cursos { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px) { .curso__circulo { width: 112px; height: 112px; } .curso__circulo .icono { width: 46px; height: 46px; } .curso__nombre { font-size: 16px; } }

/* ---------- Sobre el canal ---------- */
.sobre { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: center; }
.sobre__foto {
  position: relative; width: 280px; aspect-ratio: 1; border-radius: 50%; overflow: hidden; background: #fff;
  border: 7px solid #fff; box-shadow: 0 0 0 2px var(--rojo), var(--sombra-2); margin: 0 auto;
}
.sobre__foto img { width: 100%; height: 100%; object-fit: cover; }
.sobre__nombre { font: 700 34px/1.05 var(--f-titulo); text-transform: uppercase; margin: 0 0 4px; }
.sobre__rol { font: 400 19px/1.2 var(--f-titulo); color: var(--rojo); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 18px; }
.cita { font: italic 400 20px/1.5 var(--f-texto); color: var(--texto); border-left: 4px solid var(--rojo); padding: 2px 0 2px 18px; margin: 0 0 18px; }
.sobre__acciones { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
@media (max-width: 820px) { .sobre { grid-template-columns: 1fr; gap: 28px; text-align: left; } .sobre__foto { width: 220px; } }

/* ---------- Banda de página interior ---------- */
.banda-pagina { position: relative; color: #fff; overflow: hidden; isolation: isolate; background: linear-gradient(100deg, var(--rojo-profundo) 0%, var(--rojo) 55%, var(--rojo-claro) 100%); }
.banda-pagina::before { content: ""; position: absolute; inset: 0; background: var(--patron-hex-blanco); background-size: 51.96px 90px; z-index: -1; }
.banda-pagina__in { position: relative; padding-top: 30px; padding-bottom: 34px; }
.migas { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font: 400 15px/1.2 var(--f-titulo); text-transform: uppercase; letter-spacing: .5px; }
.migas a { color: #fff; opacity: .85; }
.migas a:hover { opacity: 1; color: #fff; text-decoration: underline; }
.migas span[aria-hidden] { opacity: .6; }
.banda-pagina h1 { color: #fff; font: 700 clamp(32px, 5vw, 50px)/1 var(--f-titulo); text-transform: uppercase; margin: 12px 0 8px; letter-spacing: .5px; }
.banda-pagina p { max-width: 760px; margin: 0; opacity: .95; font-size: 17px; }
.banda-pagina__ilus { position: absolute; right: 2%; top: 50%; width: 210px; transform: translateY(-50%); color: #fff; opacity: .22; pointer-events: none; }
.banda-pagina__etiqueta { display: inline-block; margin-top: 14px; background: #fff; color: var(--rojo); font: 700 13.5px/1 var(--f-titulo); text-transform: uppercase; letter-spacing: 1px; padding: 7px 10px; border-radius: 2px; }
@media (max-width: 820px) { .banda-pagina__ilus { display: none; } }

/* ---------- Filtros (catálogo) ---------- */
.filtros { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }

/* ---------- Pie de página (estilo UNS) ---------- */
.pie { position: relative; background: var(--carbon); color: #cfcfcf; font-size: 15px; overflow: hidden; isolation: isolate; }
.pie__marca-agua { position: absolute; right: -60px; bottom: -70px; width: 420px; opacity: .06; z-index: -1; pointer-events: none; filter: grayscale(1); }
.pie__in { display: grid; grid-template-columns: 1.35fr 1fr 1fr 1fr; gap: 36px; padding-top: 52px; padding-bottom: 36px; }
.pie__titulo { font: 400 32px/1.02 var(--f-titulo); color: #fff; text-transform: uppercase; margin: 0 0 12px; letter-spacing: .3px; }
.pie__texto { color: #bdbdbd; font-size: 14.5px; line-height: 1.6; margin-bottom: 0; }
.pie h4 { font: 400 18px/1 var(--f-titulo); text-transform: uppercase; color: #fff; letter-spacing: .6px; margin: 4px 0 12px; }
.pie ul { list-style: none; margin: 0; padding: 0; }
.pie li a { display: block; padding: 8px 0; color: #cfcfcf; border-bottom: 1px dotted rgba(255, 255, 255, .22); font: 400 15.5px/1.2 var(--f-titulo); text-transform: uppercase; letter-spacing: .3px; }
.pie li a:hover { color: #fff; padding-left: 4px; }
.redes { display: flex; gap: 8px; margin-top: 20px; }
.redes a { width: 40px; height: 40px; display: grid; place-items: center; background: var(--rojo); color: #fff; border-radius: 3px; transition: .2s; }
.redes a:hover { background: #fff; color: var(--rojo); }
.redes .icono { width: 21px; height: 21px; }
.pie__base { border-top: 1px solid rgba(255, 255, 255, .1); }
.pie__base .contenedor { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 16px; padding-bottom: 16px; font-size: 13.5px; color: #a8a8a8; }
@media (max-width: 960px) { .pie__in { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .pie__in { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- Barra social flotante y botón subir (estilo UNS) ---------- */
.flotante { position: fixed; right: 0; top: 44%; z-index: 40; display: flex; flex-direction: column; gap: 3px; }
.flotante a {
  width: 44px; height: 44px; display: grid; place-items: center; background: #fff; color: var(--rojo);
  box-shadow: var(--sombra-1); border-radius: 4px 0 0 4px; transition: width .2s, background .2s, color .2s;
}
.flotante a:hover { width: 54px; background: var(--rojo); color: #fff; }
.flotante a.flotante__yt { background: var(--rojo); color: #fff; }
.flotante a.flotante__yt:hover { background: var(--rojo-oscuro); }
.flotante .icono { width: 22px; height: 22px; }
.subir {
  position: fixed; right: 16px; bottom: 18px; z-index: 40; width: 48px; height: 48px; border: 0; cursor: pointer;
  display: grid; place-items: center; color: #fff; background: var(--rojo); border-radius: 50%;
  box-shadow: 0 6px 16px rgba(216, 47, 75, .35); opacity: 0; visibility: hidden; transform: translateY(10px); transition: .25s;
}
.subir.visible { opacity: 1; visibility: visible; transform: none; }
.subir:hover { background: var(--rojo-oscuro); }
.subir .icono { width: 22px; height: 22px; }
@media (max-width: 720px) { .flotante { display: none; } }

/* ---------- Modal de video ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: none; place-items: center; background: rgba(10, 10, 10, .86); padding: 16px; }
.modal.abierto { display: grid; }
.modal__caja { width: min(980px, 100%); }
.modal__barra { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; color: #fff; }
.modal__titulo { font: 700 19px/1.2 var(--f-titulo); margin: 0; color: #fff; }
.modal__cerrar { flex: none; width: 42px; height: 42px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .14); color: #fff; cursor: pointer; display: grid; place-items: center; }
.modal__cerrar:hover { background: var(--rojo); }
.modal__video { position: relative; aspect-ratio: 16 / 9; background: #000; border-radius: var(--radio); overflow: hidden; }
.modal__video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.modal__pie { margin-top: 10px; text-align: right; }
.modal__pie a { color: #fff; font: 400 15px var(--f-titulo); text-transform: uppercase; letter-spacing: .5px; opacity: .85; }
.modal__pie a:hover { opacity: 1; color: #fff; }

/* ---------- Utilidades ---------- */
.texto-rojo { color: var(--rojo); }
.centro { text-align: center; }
.mt-0 { margin-top: 0; }