/* ============================================================
   VARTEX 14 — layout.css
   Estructura general: contenedor, cabecera, hero, secciones.
   ============================================================ */

/* ---------- Contenedor ---------- */
.shell {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

/* ---------- Cabecera fija: blanco translúcido con efecto glass ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(10px) saturate(1.5);
  backdrop-filter: blur(10px) saturate(1.5);
  border-bottom: 1px solid rgba(20, 21, 24, 0.08);
  transition:
    background-color 0.7s var(--ease),
    -webkit-backdrop-filter 0.7s var(--ease),
    backdrop-filter 0.7s var(--ease),
    border-color 0.7s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.72);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  backdrop-filter: blur(18px) saturate(1.6);
  border-bottom-color: rgba(20, 21, 24, 0.12);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 3rem);
  max-width: var(--shell);
  margin-inline: auto;
  padding: 0.6rem var(--shell-pad);
  transition: padding 0.7s var(--ease);
}

.site-header.is-scrolled .nav {
  padding-block: 0.7rem;
}

/* Logotipo de la cabecera: oculto en la portada, aparece al pasarla */
.nav__logo {
  flex: 0 0 auto;
  display: block;
  line-height: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.6s var(--ease),
    transform 0.6s var(--ease),
    visibility 0s 0.6s;
}

.nav__logo img {
  display: block;
  height: clamp(34px, 3.6vh, 46px);
  width: auto;
}

.site-header.is-past-hero .nav__logo {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition:
    opacity 0.6s var(--ease),
    transform 0.6s var(--ease),
    visibility 0s;
}

/* Menú de escritorio */
.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(0.45rem, 0.9vw, 1rem);
  margin-left: auto;
}

.nav__menu a {
  position: relative;
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.3;
  color: #2c2e35;
  padding-block: 0.4rem;
  transition: color 0.4s var(--ease);
}

.nav__menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.1rem;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--rose));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.55s var(--ease-slow);
}

.nav__menu a:hover,
.nav__menu a:focus-visible,
.nav__menu a.is-active {
  color: #111214;
}

.nav__menu a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__menu a:hover::after,
.nav__menu a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Redes sociales del escritorio */
.nav__social {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.nav__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.15rem;
  height: 2.15rem;
  border: 1px solid rgba(20, 21, 24, 0.18);
  border-radius: 50%;
  color: #2c2e35;
  transition:
    color 0.4s var(--ease),
    border-color 0.4s var(--ease),
    transform 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}

.nav__social a:hover,
.nav__social a:focus-visible {
  color: #111214;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px -12px rgba(254, 140, 7, 0.6);
}

/* Botón hamburguesa */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 2.75rem;
  height: 2.75rem;
  margin-left: auto;
  padding: 0.65rem;
  background: none;
  border: 1px solid rgba(20, 21, 24, 0.18);
  border-radius: 50%;
  cursor: pointer;
}

.nav__toggle-line {
  display: block;
  height: 1px;
  width: 100%;
  background: #1a1b1f;
  transition: transform 0.5s var(--ease);
}

.nav__toggle.is-open .nav__toggle-line:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav__toggle.is-open .nav__toggle-line:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding-top: var(--header-h);
}

/* Fila superior: reservada para el componente interactivo */
.hero__row--top {
  flex: 1 1 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* El componente que se pegue dentro se centrará automáticamente */
#hero-animation {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Fila inferior: logotipo centrado */
.hero__row--bottom {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(0.5rem, 1.5vh, 1.5rem) var(--shell-pad)
    clamp(0.5rem, 1vh, 0.75rem);
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: clamp(1.2rem, 3vh, 2.2rem);
}

/* Logotipo del evento (imagen) en lugar del título de texto */
.hero__title--logo {
  display: block;
  font-size: 0;
  line-height: 0;
}

.hero__logo {
  display: block;
  width: min(70vw, 460px);
  height: auto;
  margin-inline: auto;
  filter: drop-shadow(0 18px 45px rgba(0, 0, 0, 0.4))
    drop-shadow(0 0 26px rgba(254, 140, 7, 0.14));
}

.hero__edition {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: clamp(1.2rem, 3vh, 2.4rem);
}

.hero__edition-line {
  width: clamp(2.5rem, 7vw, 5.5rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong));
}

.hero__edition-line:last-child {
  transform: scaleX(-1);
}

.hero__edition-text {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.28em;
  color: var(--text-2);
}

.hero__meta {
  font-size: var(--fs-small);
  color: var(--text-3);
  margin-top: 1rem;
  letter-spacing: 0.06em;
}

.hero__cta {
  margin-top: clamp(0.75rem, 1.5vh, 1.25rem);
}

.hero__scroll {
  position: absolute;
  bottom: 0.9rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.hero__scroll span {
  writing-mode: vertical-rl;
}

.hero__scroll::after {
  content: "";
  width: 1px;
  height: 1.5rem;
  background: linear-gradient(var(--text-3), transparent);
  animation: scroll-hint 2.6s var(--ease) infinite;
}

/* ---------- Secciones ---------- */
.section {
  position: relative;
  padding-block: var(--sec-pad);
  overflow: hidden;
}

/* Fondo alterno para cambiar el ritmo de la página.
   Translúcido muy claro para que la nebulosa siga siendo visible. */
.section--programa {
  background: rgba(255, 255, 255, 0.02);
  border-block: 1px solid var(--line);
}

/* Dos columnas: cabecera (título + descripción) a la izquierda,
   lista de temas a la derecha. */
.section--programa .shell {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.section--programa .section-head {
  margin-bottom: 0;
}

.section--programa .section-head--split {
  max-width: none;
}

/* Dos columnas en la Muestra Nacional (desktop): cabecera e imagen
   a la izquierda, acordeón de obras a la derecha. */
.section--nacional .shell {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.section--nacional .section-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section--nacional .section-head--row {
  flex-direction: column;
  align-items: flex-start;
  gap: 1.4rem;
}

.section--nacional .still--wide {
  margin-bottom: 0;
}

/* Dos columnas en la Muestra Local (desktop): cabecera e imagen
   a la izquierda, acordeón de obras a la derecha. */
.section--local .local__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.section--local .local__col {
  min-width: 0;
}

.section--local .section-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section--local .section-head--row {
  flex-direction: column;
  align-items: flex-start;
  gap: 1.4rem;
}

.section--local .still--wide {
  margin-bottom: 0;
}

/* Dos columnas en la Muestra Performance (desktop), invertidas con
   respecto a la Local: acordeón de obras a la izquierda, cabecera e
   imagen a la derecha. */
.section--perf .perf__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.section--perf .perf__col {
  min-width: 0;
}

.section--perf .section-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section--perf .section-head--row {
  flex-direction: column;
  align-items: flex-start;
  gap: 1.4rem;
}

.section--perf .still--wide {
  margin-bottom: 0;
}

/* Dos columnas en la Muestra Internacional (desktop), invertidas con
   respecto a la Performance: cabecera e imagen a la izquierda,
   acordeón de obras a la derecha. */
.section--intl .intl__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.section--intl .intl__col {
  min-width: 0;
}

.section--intl .section-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section--intl .section-head--row {
  flex-direction: column;
  align-items: flex-start;
  gap: 1.4rem;
}

.section--intl .still--wide {
  margin-bottom: 0;
}

/* Patrocinadores: dos columnas con los logos, sin título. Se separa
   de la sección anterior con una línea horizontal superior. */
.section--sponsors {
  border-top: 1px solid var(--line-strong);
  background: #fff;
  padding-block: clamp(3rem, 6vw, 5rem);
}

.section--sponsors .sponsors__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.section--sponsors .sponsors__col {
  min-width: 0;
}

.section--sponsors .sponsors__img {
  display: block;
  width: 100%;
  height: auto;
}

/* Video de YouTube incrustado, 16:9 responsivo. */
.section--video .video-frame {
  aspect-ratio: 16 / 9;
  width: 100%;
  border-radius: clamp(0.5rem, 1vw, 1rem);
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--line),
    0 2rem 4rem rgba(0, 0, 0, 0.45);
}

.section--video .video-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.section--datos {
  background: rgba(255, 255, 255, 0.025);
  border-block: 1px solid var(--line);
}

.section--muestras {
  background: rgba(255, 255, 255, 0.02);
  border-block: 1px solid var(--line);
}

/* ---------- Cabeceras de sección ---------- */
.section-head {
  margin-bottom: clamp(1rem, 4vw, 1rem);
}

.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.section-head--split {
  max-width: 62%;
}

.section-title {
  font-size: var(--fs-title);
  font-weight: 600;
  margin-top: 1.1rem;
  max-width: 28ch;
}

.section-title .line {
  display: block;
}

.section-sub {
  font-size: var(--fs-sub);
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 300;
  color: var(--text-2);
  margin-top: 1.6rem;
  line-height: normal;
}

.section-note {
  max-width: 34ch;
  color: var(--text-3);
  font-size: var(--fs-small);
  line-height: 1.7;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-2);
}

.kicker span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.kicker::after {
  content: "";
  width: clamp(2rem, 6vw, 4.5rem);
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

/* ---------- Rejilla editorial (taller / seminario) ---------- */
.editorial {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.editorial--taller {
  grid-template-columns: 1.18fr 0.82fr;
  margin-bottom: clamp(4rem, 9vw, 8rem);
}

/* Columna editorial: lista de temas e imagen + datos */
.editorial__col {
  min-width: 0;
}

.editorial__col > .topics {
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.editorial__col > .still {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

/* Cabecera dentro de la columna izquierda del taller */
.section--taller .section-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.editorial--seminario {
  grid-template-columns: 0.9fr 1.1fr;
}

.editorial__text p {
  color: var(--text-2);
  margin-bottom: 1.3rem;
}

.editorial__lead {
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.55;
  color: var(--text) !important;
  font-family: var(--font-serif);
  font-weight: 300;
}

.editorial__note {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3) !important;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

/* Biografía */
.editorial__bio {
  margin-top: clamp(2rem, 4vw, 3.5rem);
}

.editorial__bio-name {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 500;
}

.editorial__bio-role {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0.4rem 0 1.2rem;
}

.editorial__bio p {
  color: var(--text-2);
}

/* Lista de hechos */
.fact-list {
  display: grid;
  gap: 0.9rem;
  margin: 2.2rem 0 2.4rem;
}

.fact-list > div {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}

.fact-list dt {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
}

.fact-list dd {
  text-align: right;
  color: var(--text);
  font-size: var(--fs-small);
}

/* ---------- Pie de página ---------- */
.site-footer {
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(10px) saturate(1.5);
  backdrop-filter: blur(10px) saturate(1.5);
  --line: rgba(17, 18, 20, 0.12);
  --line-strong: rgba(17, 18, 20, 0.2);
  --text-2: #3f4148;
  --text-3: #5f626a;
  color: var(--text-3);
  border-top: 1px solid var(--line);
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(2.5rem, 5vw, 3.5rem);
}

.site-footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.8rem;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.site-footer__logo {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
}

.site-footer__logo span {
  font-family: var(--font-sans);
  font-style: italic;
  font-weight: 700;
  color: var(--accent);
}

.site-footer__tagline {
  max-width: 30ch;
  color: var(--text-3);
  font-size: var(--fs-small);
}

.site-footer__social {
  display: flex;
  gap: 0.9rem;
}

.site-footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--text-2);
  transition:
    color 0.4s var(--ease),
    border-color 0.4s var(--ease),
    transform 0.4s var(--ease);
}

.site-footer__social a:hover,
.site-footer__social a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-block: 1px solid var(--line);
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.site-footer__col p,
.site-footer__col a {
  color: var(--text-3);
  font-size: var(--fs-small);
}

.site-footer__col a {
  transition: color 0.35s var(--ease);
}

.site-footer__col a:hover,
.site-footer__col a:focus-visible {
  color: var(--accent);
}

.site-footer__label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-2) !important;
  margin-bottom: 0.6rem;
}

/* Logos de patrocinadores: dos columnas */
.site-footer__sponsors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.site-footer__sponsor {
  min-width: 0;
}

.site-footer__sponsor img {
  display: block;
  width: 100%;
  height: auto;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2.2rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}