/* ─────────────────────────────────────────────────────────────────────
   Site nav — barra de navegación persistente y consistente en todas las
   páginas (index, builder, resultados, mis-viajes, share).
   Self-contained: colores de marca hardcodeados (no depende de los :root
   inline de cada página), así funciona en cualquiera que la incluya.
   El toggle del burger mobile lo maneja assets/js/site-nav.js.
   ───────────────────────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 48px;
  border-bottom: 1px solid rgba(29,29,31,0.08);
  background: rgba(251,248,244,0.92);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-nav .logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-nav .logo img {
  width: 34px;
  height: 34px;
  border-radius: 999px;
}
.site-nav .logo .wm {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 600;
  font-size: 22px;
  color: #1D1D1F;
  letter-spacing: -0.01em;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.site-nav .logo .wm .by {
  font-family: 'Montserrat', sans-serif;
  font-style: normal;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: #6F6B68;
}
.site-nav .links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.site-nav .links a {
  color: rgba(29,29,31,0.62);
  text-decoration: none;
  transition: color 0.15s ease;
}
.site-nav .links a:hover { color: #1D1D1F; }
.site-nav .links a.active {
  color: #2F8C88;
  font-weight: 600;
}
.site-nav .actions {
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-nav .signin {
  font-size: 13px;
  font-weight: 500;
  color: rgba(29,29,31,0.72);
  text-decoration: none;
}
.site-nav .signin:hover { color: #1D1D1F; }
.site-nav .cta {
  font-size: 13px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  background: #59BDB9;
  color: #fff;
  border: 1px solid transparent;
  text-decoration: none;
  letter-spacing: 0.01em;
  box-shadow: 0 6px 16px rgba(89,189,185,0.35);
  transition: transform 160ms ease-out, box-shadow 160ms ease-out, background 160ms;
}
.site-nav .cta:hover {
  background: #2F8C88;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(89,189,185,0.45);
}

/* ---------- Burger (mobile nav) ----------
   Default oculto en desktop. En <960px se muestra y .links se transforma
   en un drawer lateral derecho que entra con `body.iris-nav-open`. */
.site-nav-burger {
  display: none;
  background: transparent;
  border: 0;
  width: 40px;
  height: 40px;
  padding: 9px 8px;
  margin-left: 4px;
  cursor: pointer;
  border-radius: 8px;
  position: relative;
  z-index: 101;
}
.site-nav-burger:hover { background: rgba(29,29,31,0.05); }
.site-nav-burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: #1D1D1F;
  border-radius: 2px;
  margin: 5px 0;
  transition: transform 220ms ease, opacity 180ms ease;
  transform-origin: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .site-nav { padding: 14px 24px; }
  .site-nav-burger { display: block; }

  /* Con el drawer abierto, subimos el z-index del header (su base es 50, que
     crea un stacking context). Sin esto, el overlay (body::before, z:99 en el
     contexto raíz) se pinta por ENCIMA del header y atrapa al drawer (.links
     vive dentro de .site-nav), así los taps caen en el overlay → cierra en vez
     de navegar. Con z:100 el drawer y el burger-X quedan sobre el overlay. */
  body.iris-nav-open .site-nav { z-index: 100; }

  /* .links: de fila horizontal → drawer lateral. Default oculto vía
     transform; visible cuando body.iris-nav-open. */
  .site-nav .links {
    position: fixed;
    top: 0;
    right: 0;
    width: 78%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 4px;
    padding: 88px 28px 32px;
    background: #FBF8F4;
    box-shadow: -4px 0 24px rgba(29,29,31,0.12);
    transform: translateX(100%);
    transition: transform 280ms cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    font-size: 16px;
  }
  .site-nav .links a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(29,29,31,0.06);
    color: #1D1D1F;
  }
  body.iris-nav-open .site-nav .links { transform: translateX(0); }

  /* Overlay backdrop detrás del drawer. */
  body.iris-nav-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(29,29,31,0.42);
    z-index: 99;
    animation: irisNavOverlayIn 240ms ease;
  }
  @keyframes irisNavOverlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  body.iris-nav-open { overflow: hidden; }

  /* Burger → X cuando está abierto. */
  body.iris-nav-open .site-nav-burger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  body.iris-nav-open .site-nav-burger span:nth-child(2) { opacity: 0; }
  body.iris-nav-open .site-nav-burger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}
@media (max-width: 560px) {
  .site-nav { padding: 12px 14px; gap: 8px; }
  .site-nav .signin { display: none; }
  /* CTA "Descargar app" hoy es placeholder. En mobile lo escondemos para que
     el burger quepa sin overflow horizontal. */
  .site-nav .cta { display: none; }
  .site-nav .actions { gap: 8px; }
}