/* ============================================================
   LIQUID GLASS — versión clara, tema médico: blanco/celeste con
   un toque de verde. Fondo ambient claro y vibrante, paneles de
   vidrio translúcido, tipografía serif elegante.
   ============================================================ */

:root {
  --color-bg: #eef6fb;
  --color-surface: rgba(255, 255, 255, 0.58);
  --color-surface-solid: #ffffff;
  --color-text: #16293b;
  --color-text-muted: #52708a;
  --color-accent: #2f8fd8;
  --color-accent-dark: #1f6fb0;
  --color-accent-green: #2f9e7c;
  --color-accent-soft: rgba(47, 143, 216, 0.14);
  --color-border: rgba(22, 41, 59, 0.14);
  --glass-blur: blur(20px) saturate(160%);

  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-accent: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 20px;
  --max-width: 1200px;
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   RESET & BASE
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 { font-family: var(--font-display); margin: 0; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.ambient {
  position: fixed;
  inset: -10%;
  z-index: -1;
  background:
    radial-gradient(circle at 15% 12%, rgba(90, 170, 230, 0.45), transparent 44%),
    radial-gradient(circle at 88% 18%, rgba(110, 210, 180, 0.36), transparent 48%),
    radial-gradient(circle at 25% 88%, rgba(150, 200, 240, 0.30), transparent 50%),
    radial-gradient(circle at 85% 90%, rgba(120, 220, 190, 0.28), transparent 46%),
    var(--color-bg);
  animation: ambient-drift 34s ease-in-out infinite alternate;
}

@keyframes ambient-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-2.5%, 2%, 0) scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  .ambient { animation: none; }
}

.glass-panel {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 30px 70px rgba(22, 41, 59, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  padding: 3rem 1.5rem;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.9), transparent);
}

@media (prefers-reduced-transparency: reduce) {
  .glass-panel, .nav.is-scrolled, .grad-card, .video-wrapper, .search__input, .back-to-top {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: var(--color-surface-solid) !important;
  }
}

@media (min-width: 700px) {
  .glass-panel { padding: 3.5rem 3rem; }
}

.glass-panel--narrow { max-width: 720px; margin: 0 auto; }

.section__eyebrow {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--color-accent-dark);
  margin: 0 0 0.75rem;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 auto 2.5rem;
  max-width: 40ch;
}

section { padding: 4rem 1.25rem; max-width: var(--max-width); margin: 0 auto; scroll-margin-top: 5.5rem; }

/* ============================================================
   NAV
   ============================================================ */

.nav {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: calc(100% - 2rem);
  max-width: calc(var(--max-width) - 2rem);
  padding: 0.7rem 1.1rem 0.7rem 1.3rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 12px 34px rgba(22, 41, 59, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition), top var(--transition), opacity 420ms ease, transform 420ms ease;
}

.nav.is-scrolled {
  top: 0.65rem;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 40px rgba(22, 41, 59, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

/* Se esconde mientras la foto destacada ocupa toda la pantalla. */
.nav--hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(-140%);
  pointer-events: none;
}

@media (max-width: 560px) {
  .nav {
    flex-wrap: wrap;
    justify-content: center;
    row-gap: 0.35rem;
    border-radius: 22px;
    padding: 0.65rem 1rem;
  }
  .nav__brand { font-size: 0.95rem; }
  .nav__links { width: 100%; justify-content: center; gap: 0.9rem; font-size: 0.78rem; }
}

.nav__brand {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav__links { display: flex; gap: 1.5rem; font-size: 0.9rem; }

.nav__links a {
  color: inherit;
  opacity: 0.85;
  transition: opacity var(--transition), color var(--transition);
}

.nav__links a:hover,
.nav__links a:focus-visible { opacity: 1; color: var(--color-accent-dark); }

/* ============================================================
   HERO — se mantiene oscuro: es una foto real con overlay,
   necesita contraste sin importar el tema del resto del sitio.
   ============================================================ */

.hero {
  position: relative;
  height: 100svh;
  min-height: 480px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #0f1b28;
}

.hero__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #16324a, #0f1b28);
  opacity: 0;
  transition: opacity var(--transition);
}

.hero__placeholder.is-visible { opacity: 1; }

.hero__placeholder-icon { display: none; }

.hero__placeholder-icon.is-visible { display: block; }

.hero__placeholder-icon svg {
  width: 18vw;
  min-width: 90px;
  max-width: 160px;
  color: #8ed2c9;
}

.hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    to top,
    rgba(6, 16, 26, 0.85) 0%,
    rgba(6, 16, 26, 0.45) 42%,
    rgba(6, 16, 26, 0.08) 75%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: 0 1.5rem 4.5rem;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  color: #fff;
  opacity: var(--hero-fade, 1);
  transform: translateY(calc((1 - var(--hero-fade, 1)) * -36px));
}

/* Entrada escalonada del hero (cada línea aparece un poco después de
   la anterior, de abajo hacia arriba) vía .hero-reveal — bidireccional
   (setupBidirectionalReveal en main.js, el delay lo pone el JS por
   tarjeta/línea, no hace falta nth-child acá). Además, al bajar, todo
   el bloque también se desvanece junto (--hero-fade) — dos animaciones
   separadas que no se pisan entre sí. */

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  color: #8ed2c9;
  margin: 0 0 0.75rem;
}

.hero__title {
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 700;
  font-style: italic;
  margin: 0 0 0.5rem;
  text-wrap: balance;
}

.hero__date {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 1.75rem;
}

.hero__cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  font-size: 0.9rem;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.hero__cta:hover,
.hero__cta:focus-visible {
  border-color: #8ed2c9;
  background: rgba(142, 210, 201, 0.2);
  transform: translateY(-2px);
}

/* ============================================================
   EVENTOS (Imposición de mandil / Fiesta de graduación) — cada
   evento es su propio panel completo. La tira de fotos ya no
   comparte columna con el video: vive como fondo ambiental
   detrás del vidrio (borrosa, atenuada), y el video pasa a
   ocupar todo el ancho de la tarjeta. Un degradado con brillo
   separa una tarjeta de la otra.
   ============================================================ */

.eventos {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.evento-block {
  position: relative;
  isolation: isolate;
  transition: transform 380ms cubic-bezier(0.16, 0.84, 0.44, 1), box-shadow 380ms ease;
}

.evento-block.glass-panel:hover {
  transform: translateY(0) scale(1.012);
  box-shadow:
    0 30px 70px rgba(22, 41, 59, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 30px 50px -20px rgba(47, 143, 216, 0.4),
    0 24px 44px -18px rgba(79, 174, 140, 0.32);
}

.evento-block__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.evento-block__bg .event-gallery {
  height: 100%;
  filter: blur(3px) saturate(112%);
  opacity: 0.75;
  transform: scale(1.06);
}

.evento-block__bg .event-gallery__track {
  animation-duration: 170s;
}

/* La segunda tarjeta corre su tira en sentido contrario, para que
   una y otra no se sientan como el mismo fondo repetido. */
.evento-block--alt .evento-block__bg .event-gallery__track {
  animation-direction: reverse;
}

.evento-block__bg-tint {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(238, 246, 251, 0.62) 0%,
    rgba(238, 246, 251, 0.28) 30%,
    rgba(238, 246, 251, 0.28) 70%,
    rgba(238, 246, 251, 0.62) 100%
  );
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}

.evento-block__content {
  position: relative;
  z-index: 1;
}

.eventos__divider {
  height: 4px;
  width: min(60%, 520px);
  margin: -0.5rem auto;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(47, 143, 216, 0.55), rgba(79, 174, 140, 0.55));
  box-shadow: 0 0 40px 10px rgba(47, 143, 216, 0.18), 0 0 40px 10px rgba(79, 174, 140, 0.18);
  filter: blur(6px);
  pointer-events: none;
}

.evento-block__fecha {
  text-align: center;
  font-family: var(--font-accent);
  font-style: italic;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

.video-wrapper--full {
  width: 100%;
  max-width: 560px;
  max-height: 38vh;
  margin: 0 auto;
}

.evento-block__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin: 1.75rem auto 0;
  width: fit-content;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  border: 1px solid rgba(47, 143, 216, 0.35);
  color: var(--color-accent-dark);
  font-size: 0.85rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
}

.evento-block__cta:hover,
.evento-block__cta:focus-visible {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  transform: translateY(-1px);
}

.video-wrapper {
  position: relative;
  min-width: 0;
  aspect-ratio: 16 / 9;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-wrapper__placeholder {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ============================================================
   FOTO DESTACADA — entre "Fiesta de graduación" y "Los
   graduados": una foto que crece a pantalla completa a medida
   que bajás (controlado por JS vía --showcase-progress), y al
   llegar a su tamaño final habilita flechas para cambiar de
   foto. Ver setupShowcase() en main.js.
   ============================================================ */

.showcase {
  position: relative;
  height: 310vh;
  max-width: none;
  margin: 0;
  padding: 0;
}

.showcase__sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.showcase__frame {
  position: relative;
  width: 100%;
  height: 100svh;
  border-radius: 32px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 30px 80px rgba(22, 41, 59, 0.22);
  transform: scale(var(--showcase-progress, 0.68));
  opacity: clamp(0.6, calc(0.4 + var(--showcase-progress, 0.68)), 1);
  transition: border-radius 420ms ease, box-shadow 420ms ease;
  will-change: transform;
}

.showcase__frame.is-full {
  border-radius: 0;
  box-shadow: none;
}

.showcase__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 260ms ease;
}

.showcase__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) scale(0.8);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(22, 41, 59, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 320ms ease, transform 320ms ease, background 200ms ease;
}

.showcase__arrow--prev { left: 18px; }
.showcase__arrow--next { right: 18px; }

.showcase__frame.is-full .showcase__arrow {
  opacity: 0.55;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

.showcase__frame.is-full .showcase__arrow:hover,
.showcase__frame.is-full .showcase__arrow:focus-visible {
  opacity: 1;
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-50%) scale(1.1);
}

@media (prefers-reduced-motion: reduce) {
  .showcase { height: auto; }
  .showcase__sticky { position: relative; height: auto; padding: 0; }
  .showcase__frame { width: 100%; height: 80vh; border-radius: 0; transform: none; opacity: 1; }
}

/* ============================================================
   COLLAGE DE GRADUADOS — tercer slide de la foto destacada:
   cuadrícula de todas las fotos (filas moviéndose solas, alternando
   dirección), y al hacer click en una se abre el "spotlight" con el
   nombre de esa persona y sus dos fotos. Ver setupShowcaseCollage()
   en main.js.
   ============================================================ */

.showcase__collage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: linear-gradient(160deg, #0f1b28, #16324a);
}

.showcase__collage-rows {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: clamp(4px, 0.8vw, 10px);
  padding: clamp(4px, 0.8vw, 10px);
}

.showcase__collage-row {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: clamp(4px, 0.8vw, 10px);
  width: max-content;
  will-change: transform;
  animation-name: collage-scroll;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.showcase__collage-row--reverse {
  animation-direction: reverse;
}

@keyframes collage-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.showcase__collage-tile {
  position: relative;
  flex: 0 0 auto;
  height: 100%;
  aspect-ratio: 1;
  border-radius: 14px;
  overflow: hidden;
  border: 0;
  padding: 0;
  cursor: pointer;
  outline-offset: -2px;
  transition: filter 420ms ease, opacity 420ms ease, transform 200ms ease;
}

.showcase__collage-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 320ms ease;
}

.showcase__collage-tile img.is-loaded {
  opacity: 1;
}

.showcase__collage-tile-initials {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
}

.showcase__collage-tile:hover,
.showcase__collage-tile:focus-visible {
  filter: none;
  opacity: 1;
  transform: scale(1.15);
  z-index: 3;
}

@media (prefers-reduced-motion: reduce) {
  .showcase__collage-row { animation: none; }
}

/* ============================================================
   GALERÍA DE EVENTO (fiesta / mandil) — tira de fotos que se
   desplaza sola (marquee), se pausa al pasar el mouse, y cada
   foto abre completa en el lightbox.
   ============================================================ */

.event-gallery {
  margin-top: 1rem;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: 14px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* Edge viejo */
}

.event-gallery::-webkit-scrollbar { display: none; } /* Chrome/Safari */

.event-gallery__track {
  display: flex;
  height: 100%;
  gap: 0.75rem;
  width: max-content;
  animation: event-gallery-scroll 100s linear infinite;
}

.event-gallery:hover .event-gallery__track,
.event-gallery:focus-within .event-gallery__track {
  animation-play-state: paused;
}

@keyframes event-gallery-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .event-gallery__track { animation: none; }
  .event-gallery { overflow-x: auto; }
}

.event-gallery__item {
  position: relative;
  flex: 0 0 auto;
  height: 100%;
  aspect-ratio: 4 / 3;
  width: auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.event-gallery__placeholder {
  width: 30%;
  opacity: 0.65;
}

.event-gallery__placeholder svg { width: 100%; height: 100%; display: block; }

.event-gallery__item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 320ms ease;
}

.event-gallery__item:hover img,
.event-gallery__item:focus-visible img {
  transform: scale(1.1);
}

/* ============================================================
   BUSCADOR
   ============================================================ */

.search {
  position: relative;
  max-width: 420px;
  margin: 0 auto 1rem;
}

.search__icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--color-text-muted);
  stroke-width: 2;
  pointer-events: none;
}

.search__input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search__input::placeholder { color: var(--color-text-muted); }

.search__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.search__empty {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 auto 2rem;
}

/* ============================================================
   GRUPOS POR HOSPITAL
   ============================================================ */

.hospital-group { margin-bottom: 3rem; }

.hospital-group__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 auto 1.5rem;
  padding: 0.4rem 0.9rem 0.4rem 0.7rem;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  border: 1px solid rgba(47, 143, 216, 0.3);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hospital-group__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent-green);
}

.hospital-group__count {
  background: rgba(255, 255, 255, 0.6);
  color: var(--color-accent-dark);
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
  font-size: 0.72rem;
}

.hospital-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================================
   GRADUADOS GRID
   ============================================================ */

.graduados__grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

@media (min-width: 560px) {
  .graduados__grid { grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
}

@media (min-width: 800px) {
  .graduados__grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1100px) {
  .graduados__grid { grid-template-columns: repeat(5, 1fr); gap: 1.25rem; }
}

.grad-card {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition), background var(--transition);
}

.grad-card:hover,
.grad-card:focus-within {
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 16px 32px rgba(22, 41, 59, 0.14);
  transform: translateY(-3px);
  border-color: rgba(47, 143, 216, 0.4);
}

.grad-card__link { display: block; }

.grad-card__photo-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.grad-card__avatar {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.grad-card__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.grad-card__link:hover .grad-card__photo,
.grad-card__link:focus-visible .grad-card__photo {
  transform: scale(1.06);
}

.grad-card__footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.7rem 0.85rem;
}

.grad-card__name {
  margin: 0;
  font-size: 0.85rem;
  text-align: center;
  color: var(--color-text);
  font-weight: 500;
}

.grad-card__profile-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  border: 1px solid rgba(47, 143, 216, 0.35);
  color: var(--color-accent-dark);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
}

.grad-card__profile-btn:hover,
.grad-card__profile-btn:focus-visible {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  transform: translateY(-1px);
}

/* ============================================================
   DEDICATORIA — titular grande sobre un resplandor radial suave,
   igual que el CTA final de referencia.
   ============================================================ */

.dedicatoria {
  position: relative;
  text-align: center;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.dedicatoria__glow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(900px, 140vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(circle, rgba(47, 143, 216, 0.16) 0%, rgba(79, 174, 140, 0.1) 38%, transparent 68%);
  filter: blur(4px);
  animation: dedicatoria-pulse 8s ease-in-out infinite;
}

@keyframes dedicatoria-pulse {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  .dedicatoria__glow { animation: none; }
}

.dedicatoria__title {
  font-size: clamp(2.1rem, 6vw, 3.6rem) !important;
  text-align: center;
  margin: 0 auto 1.5rem;
}

.dedicatoria__text {
  max-width: 56ch;
  margin: 0 auto;
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-accent);
  font-style: italic;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  padding: 2.5rem 1.25rem 3rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-border);
}

.back-to-top {
  position: fixed;
  left: 1.25rem;
  bottom: 1.25rem;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  box-shadow: 0 10px 22px rgba(22, 41, 59, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.85);
  transition: opacity var(--transition), transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.back-to-top__icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  padding: 5px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  transform: rotate(var(--icon-rotate, 0deg));
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

/* Si ya pasaste "Los graduados" de largo, la flecha apunta hacia
   arriba en vez de hacia abajo (mismo botón, mismo destino). */
.back-to-top.is-above {
  --icon-rotate: 180deg;
}

.back-to-top span {
  display: inline-block;
  max-width: 0;
  margin-left: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-width 420ms cubic-bezier(0.16, 0.84, 0.44, 1), opacity 240ms ease, margin-left 420ms cubic-bezier(0.16, 0.84, 0.44, 1);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 18px 36px rgba(22, 41, 59, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.back-to-top:hover span,
.back-to-top:focus-visible span,
.back-to-top.is-intro span {
  max-width: 220px;
  margin-left: 0.6rem;
  opacity: 1;
}

.back-to-top:hover .back-to-top__icon,
.back-to-top:focus-visible .back-to-top__icon {
  background: var(--color-accent);
  color: #fff;
  transform: rotate(var(--icon-rotate, 0deg)) translateY(2px);
}

/* ============================================================
   REVEAL AL HACER SCROLL — aparecen desde abajo con opacidad
   suave cuando entran en pantalla (una sola vez).
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(0.16, 0.84, 0.44, 1),
              transform 700ms cubic-bezier(0.16, 0.84, 0.44, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tarjetas de graduados: mismo efecto visual que .reveal, pero en su
   propia clase porque este SÍ es bidireccional (aparece de a una al
   bajar, se oculta al subir, y vuelve a aparecer si volvés a bajar) —
   a diferencia de .reveal, que solo aparece una vez. El delay lo pone
   setupGradReveal() en JS, por tarjeta, para que no aparezcan todas
   juntas en la misma fila. */
.grad-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms cubic-bezier(0.16, 0.84, 0.44, 1),
              transform 500ms cubic-bezier(0.16, 0.84, 0.44, 1);
}

.grad-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Texto del hero: mismo mecanismo bidireccional que .grad-reveal
   (setupBidirectionalReveal), pero con el movimiento más grande de la
   entrada original del hero. */
.hero-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(0.16, 0.84, 0.44, 1),
              transform 700ms cubic-bezier(0.16, 0.84, 0.44, 1);
}

.hero-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   MORPH DIALOG — modal que "crece" desde la foto clickeada hasta una
   tarjeta grande (foto arriba, nombre abajo), inspirado en el
   MorphingDialog de motion-primitives/React Bits pero portado a JS/CSS
   plano vía FLIP (ver openMorphDialog en main.js). Usado por el collage
   de graduados y por las tarjetas de "Los graduados".
   ============================================================ */
.morph-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8, 18, 28, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 260ms ease;
  z-index: 400;
}

.morph-backdrop.is-open {
  opacity: 1;
}

.morph-dialog {
  position: fixed;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 14px;
  background: var(--color-surface-solid);
  box-shadow: 0 0 0 rgba(15, 30, 45, 0);
  z-index: 401;
}

.morph-dialog.is-open {
  border-radius: 22px;
  box-shadow: 0 30px 70px rgba(15, 30, 45, 0.4);
}

.morph-dialog__img {
  display: block;
  width: 100%;
  object-fit: cover;
  flex: 0 0 auto;
  background: var(--color-accent-soft);
}

.morph-dialog__footer {
  padding: 1.1rem 1.4rem 1.3rem;
  text-align: center;
  opacity: 0;
  transition: opacity 200ms ease;
}

.morph-dialog__footer.is-visible {
  opacity: 1;
}

.morph-dialog__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  color: var(--color-text);
}

.morph-dialog__subtitle {
  margin: 0.3rem 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.morph-dialog__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: rgba(10, 20, 30, 0.45);
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 200ms ease, background 160ms ease;
}

.morph-dialog__close.is-visible {
  opacity: 1;
}

.morph-dialog__close:hover,
.morph-dialog__close:focus-visible {
  background: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; }
  .reveal, .grad-reveal, .hero-reveal { opacity: 1; transform: none; }
}