/* ==========================================================================
   ESTUDIANTINA.ONLINE — HUB PRINCIPAL
   Dirección editorial: negro cálido, texto crema, naranja de marca como único
   acento. Serif de display + sans de texto, líneas finas, sin brillos.
   ========================================================================== */

:root {
  --hub-bg: #0c0b0a;
  --hub-bg-2: #141311;
  --hub-ink: #f2ede4;
  --hub-ink-2: #bdb6aa;
  --hub-ink-3: #8a8379;
  --hub-line: rgba(242, 237, 228, 0.12);
  --hub-line-strong: rgba(242, 237, 228, 0.28);
  --hub-accent: #ff8a1f;

  --hub-serif: 'Instrument Serif', 'Times New Roman', serif;
  --hub-sans: 'Instrument Sans', system-ui, -apple-system, sans-serif;

  --hub-header-h: 68px;
  --hub-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-padding-top: calc(var(--hub-header-h) + 16px); }

body.hub-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--hub-bg);
  color: var(--hub-ink);
  font-family: var(--hub-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

main { flex: 1; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ol, ul { list-style: none; }
[hidden] { display: none !important; }

::selection { background: var(--hub-accent); color: var(--hub-bg); }

:focus-visible {
  outline: 1.5px solid var(--hub-accent);
  outline-offset: 4px;
}

.hub-wrap {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.hub-skip {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--hub-ink);
  color: var(--hub-bg);
  font-weight: 600;
}
.hub-skip:focus { top: 0.75rem; }

/* ---------- Tipografía base ---------- */
.hub-kicker {
  font-family: var(--hub-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--hub-ink-3);
}

.hub-display {
  font-family: var(--hub-serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
}
.hub-display em,
.hub-title em { font-style: italic; color: var(--hub-accent); }

.hub-textlink {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
  border-bottom: 1px solid var(--hub-line-strong);
  padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.hub-textlink span { transition: transform 0.25s var(--hub-ease); }
.hub-textlink:hover { border-color: var(--hub-ink); }
.hub-textlink:hover span { transform: translateX(4px); }
.hub-textlink--sm { font-size: 0.88rem; color: var(--hub-ink-2); }
.hub-textlink--sm:hover { color: var(--hub-ink); }

.hub-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 1.6rem;
  border-radius: 999px;
  background: var(--hub-ink);
  color: var(--hub-bg);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color 0.2s ease, transform 0.2s var(--hub-ease);
}
.hub-btn:hover { background: var(--hub-accent); }
.hub-btn:active { transform: scale(0.98); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.hub-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 11, 10, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hub-line);
}

.hub-header-inner {
  height: var(--hub-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.hub-wordmark {
  font-family: var(--hub-sans);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}
.hub-wordmark span { color: var(--hub-accent); }

.hub-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.92rem;
}
.hub-nav a {
  position: relative;
  color: var(--hub-ink-2);
  transition: color 0.2s ease;
}
.hub-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--hub-ease);
}
.hub-nav a:hover { color: var(--hub-ink); }
.hub-nav a:hover::after { transform: scaleX(1); }
.hub-nav-ext { color: var(--hub-ink) !important; }

.hub-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--hub-line-strong);
  border-radius: 999px;
  color: var(--hub-ink);
  font: 500 0.88rem var(--hub-sans);
  padding: 0.45rem 1rem;
  cursor: pointer;
}
.hub-menu-close { display: none; }
.hub-header.is-open .hub-menu-open { display: none; }
.hub-header.is-open .hub-menu-close { display: inline; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hub-hero {
  padding-top: clamp(2.5rem, 7vw, 5.5rem);
}

.hub-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hub-ink-3);
}
.hub-meta li + li::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin: 0 1rem 0.18em;
  border-radius: 50%;
  background: var(--hub-accent);
  vertical-align: middle;
}

.hub-title {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  font-family: var(--hub-serif);
  font-weight: 400;
  font-size: clamp(3.6rem, 12.5vw, 11.5rem);
  line-height: 0.88;
  letter-spacing: -0.035em;
}
.hub-title em { padding-right: 0.04em; }

.hub-hero-foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem 4rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

.hub-lede {
  max-width: 36rem;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--hub-ink-2);
  text-wrap: pretty;
}

.hub-ctas {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
}

/* Tira "Próxima fecha" */
.hub-next {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 1rem 2rem;
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  padding: 1.35rem 0;
  border-top: 1px solid var(--hub-line);
}
.hub-next-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--hub-accent);
}
.hub-next-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--hub-accent);
  animation: hub-blink 1.8s ease-in-out infinite;
}
@keyframes hub-blink { 50% { opacity: 0.25; } }

.hub-next-title {
  font-family: var(--hub-serif);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1.1;
}
.hub-next-detail {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1.25rem;
  color: var(--hub-ink-2);
  font-size: 0.92rem;
}
.hub-next-detail span:empty { display: none; }
.hub-next-arrow {
  font-size: 1.3rem;
  transition: transform 0.3s var(--hub-ease);
}
.hub-next:hover .hub-next-arrow { transform: translateX(6px); color: var(--hub-accent); }

/* ==========================================================================
   MARQUESINA DE COLEGIOS
   ========================================================================== */
.hub-marquee {
  overflow: hidden;
  border-block: 1px solid var(--hub-line);
  padding: 1.1rem 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.hub-marquee-track {
  display: flex;
  width: max-content;
  animation: hub-marquee 90s linear infinite;
}
.hub-marquee:hover .hub-marquee-track { animation-play-state: paused; }
.hub-marquee-list {
  display: flex;
  flex-shrink: 0;
}
.hub-marquee-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding-inline: 1.4rem;
  font-family: var(--hub-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  white-space: nowrap;
  color: var(--hub-ink-2);
}
.hub-marquee-list i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c, var(--hub-accent));
  box-shadow: 0 0 0 1px rgba(242, 237, 228, 0.18);
}
@keyframes hub-marquee { to { transform: translateX(-50%); } }

/* ==========================================================================
   SECCIONES
   ========================================================================== */
.hub-section { padding-top: clamp(4rem, 9vw, 7rem); }

.hub-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hub-line);
}

/* ---------- Índice ---------- */
.hub-index-row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1.1fr) minmax(0, 1fr) 2rem;
  align-items: center;
  gap: 1rem 2rem;
  padding: clamp(1.4rem, 3vw, 2.1rem) 0;
  border-bottom: 1px solid var(--hub-line);
  transition: color 0.3s ease;
}
.hub-index-num {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--hub-ink-3);
  font-variant-numeric: tabular-nums;
}
.hub-index-name {
  font-family: var(--hub-serif);
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  transition: transform 0.45s var(--hub-ease), color 0.3s ease;
}
.hub-new {
  display: inline-block;
  margin-left: 0.4rem;
  vertical-align: super;
  font-family: var(--hub-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hub-accent);
}
.hub-index-desc {
  color: var(--hub-ink-3);
  font-size: 0.95rem;
  max-width: 30rem;
  transition: color 0.3s ease;
}
.hub-index-go {
  justify-self: end;
  font-size: 1.5rem;
  color: var(--hub-ink-3);
  transition: transform 0.45s var(--hub-ease), color 0.3s ease;
}
.hub-index-row:hover .hub-index-name { transform: translateX(0.6rem); font-style: italic; }
.hub-index-row:hover .hub-index-desc { color: var(--hub-ink-2); }
.hub-index-row:hover .hub-index-go { color: var(--hub-accent); transform: translateX(4px); }

/* ---------- Última nota + cronograma ---------- */
.hub-split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.hub-split:has(> [hidden]) { grid-template-columns: 1fr; }

.hub-news-card { display: block; padding-top: 1.5rem; }
.hub-news-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--hub-bg-2);
}
.hub-news-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--hub-ease);
}
.hub-news-card:hover .hub-news-media img { transform: scale(1.03); }
.hub-news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  margin-top: 1.25rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hub-ink-3);
}
.hub-news-meta strong { color: var(--hub-accent); font-weight: 600; }
.hub-news-title {
  margin-top: 0.6rem;
  font-family: var(--hub-serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 2.8vw, 2.3rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.hub-news-card:hover .hub-news-title { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.hub-news-desc {
  margin-top: 0.75rem;
  color: var(--hub-ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hub-agenda li {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 0.25rem 1.25rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--hub-line);
}
.hub-agenda-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--hub-ink-2);
}
.hub-agenda-name {
  font-family: var(--hub-serif);
  font-size: 1.45rem;
  line-height: 1.15;
}
.hub-agenda-info {
  grid-column: 2;
  font-size: 0.85rem;
  color: var(--hub-ink-3);
}
.hub-agenda li.is-done .hub-agenda-name { color: var(--hub-ink-3); }
.hub-agenda li.is-next .hub-agenda-date { color: var(--hub-accent); }

/* ---------- Salón de la Fama ---------- */
.hub-fame-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hub-line-strong);
}
.hub-tabs { display: flex; gap: 1.5rem; }
.hub-tab {
  background: none;
  border: 0;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  color: var(--hub-ink-3);
  font: 500 0.95rem var(--hub-sans);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.hub-tab:hover { color: var(--hub-ink); }
.hub-tab.is-active { color: var(--hub-ink); border-bottom-color: var(--hub-accent); }

.hub-rank { margin-bottom: 1.75rem; }
.hub-rank-row {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem 2rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--hub-line);
}
.hub-rank-pos {
  font-family: var(--hub-serif);
  font-size: clamp(2.8rem, 5vw, 3.8rem);
  line-height: 0.8;
  color: var(--hub-ink-3);
}
.hub-rank-row:first-child .hub-rank-pos { color: var(--hub-accent); font-style: italic; }
.hub-rank-name {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.hub-rank-name i {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c, var(--hub-accent));
  box-shadow: 0 0 0 1px rgba(242, 237, 228, 0.18);
}
.hub-rank-sub {
  display: block;
  margin-top: 0.15rem;
  color: var(--hub-ink-3);
  font-size: 0.88rem;
}
.hub-rank-val {
  text-align: right;
  font-family: var(--hub-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.hub-rank-val small {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--hub-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--hub-ink-3);
}
.hub-rank-empty { padding: 1.5rem 0; color: var(--hub-ink-3); }

/* ---------- Sponsors ---------- */
.hub-sponsors .hub-kicker {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hub-line);
}
.hub-sponsors-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  padding-top: 1.5rem;
}
.hub-sponsor {
  display: block;
  aspect-ratio: 800 / 200;
  overflow: hidden;
  background: #000;
  outline: 1px solid transparent;
  outline-offset: 4px;
  transition: outline-color 0.3s ease;
}
.hub-sponsor:hover { outline-color: var(--hub-line-strong); }
.hub-sponsor img { width: 100%; height: 100%; object-fit: cover; }
.hub-sponsor--light { background: #fff; }
.hub-sponsor--light img { object-fit: contain; padding: 0.5rem 1.5rem; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.hub-footer {
  margin-top: clamp(5rem, 10vw, 8rem);
  border-top: 1px solid var(--hub-line);
  padding-top: 2.5rem;
  overflow: hidden;
}
.hub-footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem 4rem;
}
.hub-footer-note {
  max-width: 26rem;
  color: var(--hub-ink-3);
  font-size: 0.9rem;
}
.hub-footer-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 0.6rem 3rem;
  font-size: 0.92rem;
}
.hub-footer-links a { color: var(--hub-ink-2); transition: color 0.2s ease; }
.hub-footer-links a:hover { color: var(--hub-ink); }
.hub-footer-mark {
  margin-top: clamp(3rem, 6vw, 5rem);
  font-family: var(--hub-serif);
  font-style: italic;
  font-size: clamp(4.5rem, 19vw, 17rem);
  line-height: 0.8;
  letter-spacing: -0.04em;
  color: var(--hub-bg-2);
  -webkit-text-stroke: 1px var(--hub-line-strong);
  white-space: nowrap;
  user-select: none;
}
.hub-footer-legal {
  padding: 1.25rem 0 1.75rem;
  font-size: 0.8rem;
  color: var(--hub-ink-3);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .hub-index-row { grid-template-columns: 3rem minmax(0, 1fr) 2rem; }
  .hub-index-desc { grid-column: 2; grid-row: 2; }
  .hub-index-go { grid-column: 3; grid-row: 1; }

  .hub-next { grid-template-columns: minmax(0, 1fr) auto; }
  .hub-next-label { grid-column: 1 / -1; }
  .hub-next-detail { grid-column: 1; }
  .hub-next-arrow { grid-column: 2; grid-row: 2 / span 2; }
}

@media (max-width: 860px) {
  /* Sin backdrop-filter: si no, el header se vuelve el contenedor del menú fijo */
  .hub-header { background: var(--hub-bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .hub-menu-btn { display: inline-flex; }

  .hub-nav {
    position: fixed;
    inset: var(--hub-header-h) 0 0 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem clamp(1rem, 4vw, 2.5rem) 2rem;
    background: var(--hub-bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s;
  }
  .hub-header.is-open .hub-nav { opacity: 1; visibility: visible; }
  .hub-nav a {
    padding: 1rem 0;
    border-bottom: 1px solid var(--hub-line);
    font-family: var(--hub-serif);
    font-size: 2.3rem;
    line-height: 1.1;
    color: var(--hub-ink);
  }
  .hub-nav a::after { display: none; }
  .hub-nav-ext { font-style: italic; }

  .hub-hero-foot { grid-template-columns: 1fr; }
  .hub-split { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hub-meta li:last-child { display: none; }
  .hub-ctas .hub-btn { flex: 1 1 100%; }
  .hub-ctas .hub-textlink { margin-inline: auto; }

  .hub-index-row { grid-template-columns: 2.25rem minmax(0, 1fr) 1.5rem; gap: 0.6rem 0.75rem; }
  .hub-agenda li { grid-template-columns: 1fr; }
  .hub-agenda-info { grid-column: 1; }

  .hub-rank-row { grid-template-columns: 2.75rem minmax(0, 1fr) auto; gap: 0.75rem 1rem; }
  .hub-sponsors-row { grid-template-columns: 1fr; }
  .hub-footer-links { grid-template-columns: 1fr 1fr; gap: 0.6rem 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}