/* ============================================================
   Nailsmart — base.css
   Sistema de diseño global.
   Basado en el lenguaje visual de ciencia-de-la-una-sitio_1.html
   ============================================================ */

/* ---- 1. Tokens ------------------------------------------- */

:root {
  --ground:       #EEF1F5;
  --surface:      #FFFFFF;
  --surface-deep: #0C1A2E;
  --ink:          #101E30;
  --ink-on-deep:  #EAEFF6;
  --muted:        #5A6A7E;
  --muted-on-deep:#94A6BC;
  --gold:         #8E6D1B;
  --gold-bright:  #D7B65E;
  --line:         #D5DCE5;
  --line-deep:    #21354F;

  --font-serif:  "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans:   "Karla", "Helvetica Neue", Arial, sans-serif;
  --font-mono:   "IBM Plex Mono", ui-monospace, monospace;

  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.4rem;
  --step-3: 1.9rem;
  --step-4: clamp(2.3rem, 6vw, 3.6rem);

  --measure: 64ch;
  --wrap:    68rem;

  --radius: 0;
  --transition: 0.15s ease;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:       #08111E;
    --surface:      #0E1D31;
    --surface-deep: #060E19;
    --ink:          #E7EDF5;
    --ink-on-deep:  #E7EDF5;
    --muted:        #94A6BC;
    --muted-on-deep:#94A6BC;
    --gold:         #D7B65E;
    --gold-bright:  #D7B65E;
    --line:         #1D3049;
    --line-deep:    #1D3049;
  }
}

:root[data-theme="dark"] {
  --ground:       #08111E;
  --surface:      #0E1D31;
  --surface-deep: #060E19;
  --ink:          #E7EDF5;
  --ink-on-deep:  #E7EDF5;
  --muted:        #94A6BC;
  --muted-on-deep:#94A6BC;
  --gold:         #D7B65E;
  --gold-bright:  #D7B65E;
  --line:         #1D3049;
  --line-deep:    #1D3049;
}

/* ---- 2. Reset base --------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
ul, ol { margin: 0; padding: 0; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; text-wrap: balance; }
a { color: inherit; }
button { cursor: pointer; font: inherit; }

/* ---- 3. Tipografía --------------------------------------- */

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 500;
}
h1 { font-size: var(--step-4); font-weight: 300; letter-spacing: -0.02em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0;
}

.rule-gold {
  width: 3.5rem;
  height: 2px;
  background: var(--gold-bright);
  border: 0;
  margin: 0;
}

/* ---- 4. Layout ------------------------------------------- */

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.stack   { display: flex; flex-direction: column; gap: 1rem;   align-items: flex-start; }
.stack-t { display: flex; flex-direction: column; gap: 0.5rem; align-items: flex-start; }
.stack-w { display: flex; flex-direction: column; gap: 2rem; }

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 2rem;
}

section { padding-block: 3.25rem; }
section + section { border-top: 1px solid var(--line); }

/* ---- 5. Skip link ---------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--gold-bright);
  color: #10203A;
  padding: 0.5rem 1rem;
  font-weight: 700;
  z-index: 9999;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---- 6. Encabezado del sitio ----------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-deep);
  border-bottom: 1px solid var(--line-deep);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-block: 0.85rem;
}

/* Wordmark */
.site-logo {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
}
.site-logo__name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--ink-on-deep);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.site-logo__sub {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-on-deep);
  line-height: 1;
}

/* Nav desktop */
.site-nav { margin-left: auto; }
.site-nav__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.site-nav__link {
  display: block;
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted-on-deep);
  text-decoration: none;
  transition: color var(--transition);
  white-space: nowrap;
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--ink-on-deep); }
.site-nav__link--active { color: var(--gold-bright); }
.site-nav__link--ext {
  font-size: 0.82rem;
  border: 1px solid var(--line-deep);
  padding: 0.45rem 0.75rem;
}

/* Botón WhatsApp en header */
.btn--nav-wa {
  display: none; /* visible desde md */
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--gold-bright);
  color: #10203A;
  border: 1px solid var(--gold-bright);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity var(--transition);
  flex-shrink: 0;
}
.btn--nav-wa:hover { opacity: 0.86; }
.btn--nav-wa:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; }

/* Botón hamburguesa */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  padding: 10px;
  margin-left: auto;
  flex-shrink: 0;
}
.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink-on-deep);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Menú móvil */
.nav-mobile {
  background: var(--surface-deep);
  border-top: 1px solid var(--line-deep);
  padding: 1rem 1.5rem 1.5rem;
}
.nav-mobile[hidden] { display: none; }
.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 0; }
.nav-mobile__link {
  display: block;
  padding: 0.85rem 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--muted-on-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--line-deep);
  transition: color var(--transition);
  min-height: 44px;
}
.nav-mobile__link:hover,
.nav-mobile__link:focus-visible { color: var(--ink-on-deep); }
.nav-mobile__link--active { color: var(--gold-bright); }
.nav-mobile__link--wa {
  color: var(--gold-bright);
  font-weight: 700;
  border-bottom: none;
}

/* ---- 7. Botones ------------------------------------------ */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 0.85rem 1.6rem;
  text-decoration: none;
  border: 1px solid var(--gold-bright);
  background: var(--gold-bright);
  color: #10203A;
  transition: opacity var(--transition);
  min-height: 44px;
  line-height: 1.2;
}
.btn:hover { opacity: 0.86; }
.btn:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; }

.btn-ghost {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}
.deep .btn-ghost,
.site-hero .btn-ghost {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* ---- 8. Hero del sitio (homepage) ------------------------ */

.site-hero {
  background: var(--surface-deep);
  color: var(--ink-on-deep);
  border-bottom: 1px solid var(--line-deep);
}
.site-hero__inner {
  padding-block: 4rem 3.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.site-hero .eyebrow { color: var(--gold-bright); }
.site-hero h1 { color: var(--ink-on-deep); }
.site-hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}
.site-hero__lede {
  font-family: var(--font-serif);
  font-size: var(--step-2);
  font-weight: 300;
  line-height: 1.45;
  color: var(--ink-on-deep);
}
.site-hero__note {
  color: var(--muted-on-deep);
  font-size: 0.95rem;
}
.site-hero__media {
  overflow: hidden;
}
.site-hero__media img {
  width: 100%;
  max-height: 22rem;
  object-fit: cover;
  object-position: center 25%;
  display: block;
}

/* Hero de página de curso */
.course-hero {
  background: var(--surface-deep);
  color: var(--ink-on-deep);
  border-bottom: 1px solid var(--line-deep);
}
.course-hero__inner {
  padding-block: 3.5rem 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
.course-hero .eyebrow { color: var(--gold-bright); }
.course-hero h1 { color: var(--ink-on-deep); }
.course-hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}
.course-hero__lede {
  font-family: var(--font-serif);
  font-size: var(--step-2);
  font-weight: 300;
  line-height: 1.45;
  color: var(--ink-on-deep);
}
.course-hero__note {
  color: var(--muted-on-deep);
  font-size: 0.95rem;
}
.course-hero__media {
  overflow: hidden;
}
.course-hero__media img {
  width: 100%;
  max-height: 22rem;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* ---- 9. Ficha técnica ------------------------------------ */

.ficha {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0;
  border-top: 1px solid var(--line-deep);
  width: 100%;
}
.ficha div {
  padding: 1.1rem 1.25rem 1.1rem 0;
  border-bottom: 1px solid var(--line-deep);
}
.ficha dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-on-deep);
  margin: 0 0 0.35rem;
}
.ficha dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.02rem;
  color: var(--ink-on-deep);
}

/* Ficha en fondo claro */
.ficha--light {
  border-top-color: var(--line);
}
.ficha--light div { border-bottom-color: var(--line); }
.ficha--light dt  { color: var(--muted); }
.ficha--light dd  { color: var(--ink); }

/* ---- 10. Contenido de página ----------------------------- */

.page-content { padding-block: 3.25rem; }
.page-content p { max-width: var(--measure); }

/* Bloques de contenido con borde superior */
.content-section { padding-block: 3.25rem; }
.content-section + .content-section { border-top: 1px solid var(--line); }

/* ---- 11. Criterio (para quién es / no es) ---------------- */

.criterio {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.criterio h3 {
  font-size: var(--step-1);
  font-family: var(--font-sans);
  font-weight: 700;
}
.criterio ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.criterio li { color: var(--muted); }
.criterio-si { border-left: 2px solid var(--gold);  padding-left: 1.25rem; }
.criterio-no { border-left: 2px solid var(--line);  padding-left: 1.25rem; }

/* ---- 12. Temario ----------------------------------------- */

.modulos {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.modulos li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.modulos li:first-child { border-top: 1px solid var(--line); }
.mod-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.mod-t { font-weight: 700; display: block; margin-bottom: 0.15rem; }
.mod-d { color: var(--muted); font-size: 0.95rem; }

/* ---- 13. Incluye ----------------------------------------- */

.incluye {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem 2rem;
}
.incluye li {
  display: flex;
  gap: 0.65rem;
  align-items: baseline;
  color: var(--muted);
}
.incluye li::before {
  content: "—";
  color: var(--gold);
  flex: none;
}

/* ---- 14. Bloque bioseguridad ----------------------------- */

.bio {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.bio p { max-width: var(--measure); color: var(--muted); }

.cuenta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
  max-width: 26rem;
}
.cuenta div { display: flex; justify-content: space-between; gap: 1rem; }
.cuenta .total {
  border-top: 1px solid var(--line);
  padding-top: 0.5rem;
  color: var(--ink);
  font-weight: 500;
}
.cuenta span:first-child { color: var(--muted); }

/* ---- 15. Niveles ----------------------------------------- */

.niveles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem;
}
.nivel {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 2px solid var(--line);
}
.nivel-1 { border-top-color: var(--gold); }
.nivel .eyebrow { color: var(--muted); }
.nivel-1 .eyebrow { color: var(--gold); }
.nivel p { font-size: 0.95rem; color: var(--muted); max-width: none; }
.nivel .precio {
  font-family: var(--font-mono);
  color: var(--ink);
  font-size: 0.95rem;
}

/* ---- 16. Sección instructora ----------------------------- */

.firma {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: var(--measure);
}
.firma blockquote {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--step-2);
  font-weight: 300;
  font-style: italic;
  color: var(--ink);
  border-left: 2px solid var(--gold);
  padding-left: 1.25rem;
  line-height: 1.4;
}

/* ---- 17. Sección de cierre (curso) ----------------------- */

.cierre {
  background: var(--surface-deep);
  color: var(--ink-on-deep);
  border-top: 1px solid var(--line-deep);
}
.cierre-inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 3.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
}
.cierre .eyebrow { color: var(--gold-bright); }
.cierre h2 { color: var(--ink-on-deep); }
.cierre p  { color: var(--muted-on-deep); max-width: 46ch; }

/* ---- 18. Tarjetas de curso (índice) ---------------------- */

.cursos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
  gap: 2rem;
}

.curso-card {
  background: var(--surface);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}
.curso-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.curso-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.curso-card__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}
.curso-card__meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.curso-card__dato {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.curso-card__body h2 {
  font-size: var(--step-2);
  margin-top: 0.25rem;
}
.curso-card__desc { color: var(--muted); font-size: 0.95rem; max-width: none; }
.curso-card__cta  { margin-top: auto; padding-top: 1rem; }

/* ---- 19. Perfil de Ale ----------------------------------- */

.ale-perfil {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}
.ale-perfil__foto {
  width: clamp(10rem, 40%, 16rem);
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--line);
  flex-shrink: 0;
}
.ale-perfil__foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.ale-perfil__texto {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}
.ale-perfil__texto p { color: var(--muted); max-width: var(--measure); }
.ale-perfil__ig {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gold);
  text-decoration: none;
}
.ale-perfil__ig:hover { text-decoration: underline; }

/* ---- 20. Galería de fotos -------------------------------- */

.galeria {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: 1rem;
}
.galeria__item {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--line);
}
.galeria__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.galeria__item:hover img { transform: scale(1.03); }

/* ---- 21. Bloque de ubicación ----------------------------- */

.ubicacion {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
}
.ubicacion__dato {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.ubicacion__dato strong {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  font-weight: 700;
}

/* ---- 22. Secciones por color de fondo -------------------- */

.section-deep {
  background: var(--surface-deep);
  color: var(--ink-on-deep);
  border-top: 1px solid var(--line-deep);
  border-bottom: 1px solid var(--line-deep);
  padding-block: 3.25rem;
}
.section-deep .eyebrow { color: var(--gold-bright); }
.section-deep h2 { color: var(--ink-on-deep); }
.section-deep p  { color: var(--muted-on-deep); }

/* Fondo blanco explícito */
.section-white {
  background: var(--surface);
}

/* Sección destacada — fondo ground con acento dorado */
.section-featured {
  background: var(--ground);
  border-top: 2px solid var(--gold);
  border-bottom: 1px solid var(--line);
  padding-block: 3.25rem;
}
.section-featured .eyebrow { color: var(--gold); }
.section-featured h2 { color: var(--ink); }
.section-featured p  { color: var(--muted); }

/* ---- 23. Pie de página ----------------------------------- */

.site-footer {
  background: var(--surface-deep);
  color: var(--ink-on-deep);
  border-top: 1px solid var(--line-deep);
  padding-top: 3rem;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-deep);
}
.site-footer__name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink-on-deep);
  margin: 0;
}
.site-footer__loc {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted-on-deep);
  margin: 0.25rem 0 0;
}
.site-footer__nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
}
.site-footer__nav a {
  font-size: 0.9rem;
  color: var(--muted-on-deep);
  text-decoration: none;
}
.site-footer__nav a:hover { color: var(--ink-on-deep); }

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.site-footer__contact a {
  font-size: 0.9rem;
  color: var(--muted-on-deep);
  text-decoration: none;
}
.site-footer__contact a:hover { color: var(--gold-bright); }

.site-footer__legal {
  padding-block: 1.25rem;
}
.site-footer__legal p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted-on-deep);
  letter-spacing: 0.04em;
}

/* ---- 24. Barra WhatsApp (móvil) -------------------------- */

.wa-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 0.5rem 1rem;
  padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  background: var(--surface-deep);
  border-top: 1px solid var(--line-deep);
}
.wa-bar__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: var(--gold-bright);
  color: #10203A;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  min-height: 44px;
  width: 100%;
}
.wa-bar__btn:hover { opacity: 0.88; }

/* ---- 25. Página 404 -------------------------------------- */

.page-404 {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 4rem;
}
.page-404 .eyebrow { margin-bottom: 0.5rem; }
.page-404 p { color: var(--muted); max-width: 42ch; margin-top: 1rem; }
.page-404 .cta-row { margin-top: 2rem; }

/* ---- 26. Responsivo -------------------------------------- */

@media (min-width: 40rem) {
  .ale-perfil {
    grid-template-columns: auto 1fr;
    align-items: start;
  }
  .site-footer__inner {
    grid-template-columns: 1fr 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 52rem) {
  .nav-toggle  { display: none; }
  .nav-mobile  { display: none !important; }
  .site-nav    { display: block; }
  .btn--nav-wa { display: inline-block; }
  .wa-bar      { display: none; }

  /* Hero split en dos columnas */
  .site-hero__inner {
    grid-template-columns: 55% 1fr;
    gap: 4rem;
    padding-block: 5rem 4rem;
  }
  .site-hero__media img {
    max-height: none;
    min-height: 28rem;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
  }

  /* Hero de curso en dos columnas */
  .course-hero__inner {
    grid-template-columns: 55% 1fr;
    gap: 4rem;
  }
  .course-hero__media img {
    max-height: none;
    min-height: 26rem;
    height: 100%;
    object-fit: cover;
    object-position: center;
  }
}

@media (max-width: 51.99rem) {
  .site-nav { display: none; }
}

/* ---- 27. Accesibilidad ----------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}


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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration:  0.01ms !important;
    scroll-behavior: auto !important;
  }
  .galeria__item:hover img { transform: none; }
}