.page-background {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: -1;
}

.page-background__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(5rem);
  opacity: 0.2;
}

.page-background__glow--one {
  width: 30rem;
  height: 30rem;
  top: -8rem;
  right: -6rem;
  background: rgba(70, 73, 214, 0.32);
}

.page-background__glow--two {
  width: 26rem;
  height: 26rem;
  bottom: 10%;
  left: -5rem;
  background: rgba(87, 255, 6, 0.16);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-sm);
}

.site-logo {
  display: inline-flex;
  align-items: center;
}

.site-logo__image {
  display: block;
  width: auto;
  height: 2.75rem;
}

.site-logo__image--light {
  display: none;
}

body[data-theme="light"] .site-logo__image--dark {
  display: none;
}

body[data-theme="light"] .site-logo__image--light {
  display: block;
}

.site-nav {
  display: none;
  align-items: center;
  gap: 0.9rem;
}

.site-nav a {
  color: var(--text-soft);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a:not(.button) {
  color: inherit;
}

@media (max-width: 47.9375rem) {
  .site-logo__image {
    height: 2.35rem;
  }
}

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

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header__actions .icon-button img {
  width: 1.15rem;
  height: 1.15rem;
  object-fit: contain;
  display: block;
  filter: invert(1);
}

body[data-theme="light"] .site-header__actions .icon-button img {
  filter: none;
}

.mobile-about-link {
  color: var(--text-soft);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mobile-about-link:hover,
.mobile-about-link:focus-visible {
  color: var(--text);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.theme-toggle__track {
  position: relative;
  width: 2.6rem;
  height: 1.35rem;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--text) 18%, transparent);
}

.theme-toggle__thumb {
  position: absolute;
  top: 0.16rem;
  left: 0.15rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--on);
  transition: transform var(--base) var(--ease-standard), background-color var(--base) var(--ease-standard);
  /* Oscuro = OFF (derecha en track horizontal) */
  transform: translateX(1.25rem);
}

body[data-theme="light"] .theme-toggle__thumb {
  /* Claro = ON (izquierda) */
  transform: translateX(0);
  background: var(--ac);
}

.utility-rail {
  position: fixed;
  top: 50%;
  right: 1.25rem;
  z-index: 25;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-card);
  transform: translateY(-50%);
}

.utility-rail__music {
  min-width: 3rem;
  min-height: 3rem;
}

.music-icon--off {
  display: none;
}

.utility-rail__music.is-playing .music-icon--on {
  display: none;
}

.utility-rail__music.is-playing .music-icon--off {
  display: inline;
}

.utility-rail .theme-toggle {
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.6rem 0.55rem;
  background: transparent;
}

.utility-rail .theme-toggle__track {
  width: 1.35rem;
  height: 3rem;
}

.utility-rail .theme-toggle__thumb {
  top: 0.18rem;
  left: 0.16rem;
  /* Oscuro = OFF junto a etiqueta OFF (abajo) */
  transform: translateY(1.45rem);
}

body[data-theme="light"] .utility-rail .theme-toggle__thumb {
  /* Claro = ON junto a etiqueta ON (arriba) */
  transform: translateY(0);
}

.section-dots {
  display: grid;
  gap: 0.85rem;
  justify-items: center;
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
}

.section-dots button {
  position: relative;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  transition:
    transform var(--base) var(--ease-standard),
    background-color var(--base) var(--ease-standard),
    border-color var(--base) var(--ease-standard);
}

.section-dots button::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 50%;
  right: calc(100% + 0.75rem);
  transform: translateY(-50%);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--surface-strong);
  color: var(--text);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--base) var(--ease-standard);
}

.section-dots button:hover::after,
.section-dots button:focus-visible::after {
  opacity: 1;
}

.section-dots button.is-active {
  background: var(--on);
  border-color: transparent;
  transform: scale(1.35);
}

.site-footer {
  padding: var(--space-2xl) 0 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg) 84%, #000 16%));
}

.site-footer__grid {
  display: grid;
  gap: var(--space-xl);
}

.footer-block {
  display: grid;
  gap: var(--space-sm);
}

.footer-form {
  display: grid;
  gap: 1rem;
}

.footer-form label {
  display: grid;
  gap: 0.5rem;
}

.footer-form input,
.footer-form select {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  transition:
    border-color var(--base) var(--ease-standard),
    box-shadow var(--base) var(--ease-standard),
    background-color var(--base) var(--ease-standard);
}

.footer-form input:focus-visible,
.footer-form select:focus-visible {
  border-color: color-mix(in srgb, var(--on) 70%, var(--line));
  box-shadow: 0 0 0 0.25rem rgba(87, 255, 6, 0.12);
}

.footer-form select:invalid {
  color: var(--text-soft);
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 0.5rem;
}

.footer-social__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--bg-elevated);
  font-family: var(--font-display);
}

.footer-social__icon img {
  width: 1.35rem;
  height: 1.35rem;
  object-fit: contain;
  display: block;
}

body[data-theme="light"] .footer-social__icon {
  background: var(--ac);
  border-color: color-mix(in srgb, var(--ac) 70%, var(--line));
}

body[data-theme="light"] .footer-social__icon img {
  filter: brightness(0) invert(1);
}

.footer-legal {
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
}

.footer-legal__inner {
  display: grid;
  gap: 0.5rem;
  padding: 1rem 0 1.25rem;
  color: var(--text-soft);
  text-align: center;
}

.footer__partners {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2rem);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.footer__partner-logo {
  height: clamp(1.5rem, 3vw, 2.5rem);
  width: auto;
  opacity: 0.8;
  transition: opacity var(--base) var(--ease-standard);
}

.footer__partner-link:hover .footer__partner-logo {
  opacity: 1;
}

.legal {
  padding: var(--space-2xl) 0;
}

.legal__content {
  width: min(calc(100% - 2rem), 72ch);
  margin-inline: auto;
  display: grid;
  gap: 1rem;
  text-align: left;
}

.legal__content h1 {
  margin-bottom: 0.5rem;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.legal__content h2 {
  margin-top: 1.25rem;
  font-size: clamp(1.4rem, 4vw, 2rem);
  line-height: 1.05;
}

.legal__content h3 {
  margin-top: 0.9rem;
  font-size: clamp(1.02rem, 2.4vw, 1.2rem);
  letter-spacing: 0.01em;
}

.legal__content p,
.legal__content li {
  color: var(--text-soft);
  line-height: 1.65;
}

.legal__content ul {
  margin: 0.25rem 0 0.5rem;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.4rem;
}

.legal__content h2 + p {
  margin-bottom: 0.4rem;
}

@media (min-width: 48rem) {
  .site-footer__grid {
    gap: var(--space-2xl);
  }
}

@media (min-width: 64.0625rem) {
  .site-nav {
    display: inline-flex;
    margin-left: auto;
  }

  .lang-switcher {
    margin-left: 0.75rem;
  }

  .site-header__actions {
    display: none;
  }

  .utility-rail {
    display: flex;
  }

  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 32rem);
    align-items: start;
  }

  .footer-legal__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    text-align: left;
  }

  .footer-legal__inner p:nth-child(2),
  .footer-legal__inner .footer__partners {
    text-align: center;
  }

  .footer-legal__inner p:last-child {
    text-align: right;
  }
}

/* ─── Bilingual system ───────────────────────────────────────────────────────
   Both languages are in the DOM. CSS shows only the active one.
   Default: English. Class lang-es on <html> activates Spanish.
   ──────────────────────────────────────────────────────────────────────────── */

/* Hide inactive language — class on <html> (JS) + lang attribute fallback */
html.lang-en [data-lang="es"],
html.lang-es [data-lang="en"],
html[lang="en"] [data-lang="es"],
html[lang="es"] [data-lang="en"],
html:not(.lang-es):not([lang="es"]) [data-lang="es"] {
  display: none !important;
}

/* Language switcher — visible on desktop and mobile */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  margin-left: auto;
}

.lang-switcher__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.75rem;
  color: var(--text);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.06em;
  transition: background-color var(--base) var(--ease-standard);
}

.lang-switcher__btn:hover {
  background-color: color-mix(in srgb, var(--text) 8%, transparent);
}

.lang-switcher__icon {
  width: 1.1rem;
  height: 1.1rem;
  display: block;
}

.lang-switcher__icon--dark { display: none; }
html[data-theme="dark"] .lang-switcher__icon--light { display: none; }
html[data-theme="dark"] .lang-switcher__icon--dark  { display: block; }

.lang-switcher__label {
  line-height: 1;
}