/* Istmo Adventure: menú desplegable y sección Tours.
   Los colores y curvas base vienen de :root en index.html. */

:root {
  --borde: clamp(20px, 4.2vw, 62px);
}

/* ---------- Barra de navegación cuando ya pasaste la portada ---------- */
.nav { transition: padding .6s var(--curva), background .6s var(--curva), box-shadow .6s var(--curva); border-radius: 999px; }
.nav-flota .nav, [data-barra="fija"] .nav {
  padding-block: 8px;
  background: rgba(8, 15, 24, .66);
  box-shadow: inset 0 0 0 1px var(--linea);
  -webkit-backdrop-filter: blur(22px) saturate(1.4);
  backdrop-filter: blur(22px) saturate(1.4);
}
/* Sobre fondo claro la barra necesita más cuerpo para que su texto crema se lea */
[data-tema="claro"] .nav-flota .nav, [data-tema="claro"] [data-barra="fija"] .nav { background: rgba(16, 27, 40, .9); }
.nav-flota .menu,
[data-barra="fija"] .menu,
.mega-abierto .menu { background: transparent; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
.mega-abierto .nav { background: transparent; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
.menu a[aria-expanded="true"], .menu a[aria-current="page"] { background: var(--vidrio-fuerte); }

/* ---------- Menú desplegable ---------- */
.telon {
  position: fixed;
  inset: 0;
  z-index: 24;
  background: rgba(5, 10, 17, .46);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .5s var(--curva), visibility 0s .5s;
}
.mega-abierto .telon { opacity: 1; visibility: visible; transition: opacity .5s var(--curva); }

.mega {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 25;
  padding: 104px clamp(24px, 6vw, 96px) 46px;
  background: rgba(14, 12, 17, .92);
  -webkit-backdrop-filter: blur(34px) saturate(1.5);
  backdrop-filter: blur(34px) saturate(1.5);
  color: var(--papel);
  clip-path: inset(0 0 100% 0 round 0 0 30px 30px);
  pointer-events: none;
  transition: clip-path .6s var(--curva);
}
.mega-abierto .mega { clip-path: inset(0 0 0 0 round 0 0 30px 30px); pointer-events: auto; }
.mega-dentro { display: grid; max-width: 1180px; margin-inline: auto; }
.mega-panel {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 64px);
  align-content: start;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s var(--curva), visibility 0s .2s;
}
.mega-panel.activo { opacity: 1; visibility: visible; transition: opacity .2s var(--curva); }
.mega-col h3 { margin: 0 0 14px; font-size: .75rem; font-weight: 500; letter-spacing: .04em; color: var(--papel-suave); }
.mega-col a {
  display: block;
  padding: 5px 0;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.15rem, 1.7vw, 1.5rem);
  letter-spacing: -.02em;
  line-height: 1.2;
  transition: color .4s var(--curva), transform .5s var(--curva);
}
.mega-col a:hover { color: var(--ambar); transform: translateX(6px); }
.mega-col.chica a { font-family: var(--texto); font-weight: 500; font-size: .95rem; letter-spacing: 0; padding: 6px 0; }
.mega-panel.activo .mega-item { animation: megaEntra .55s var(--curva) both; animation-delay: calc(var(--n) * 26ms + 90ms); }
@keyframes megaEntra { from { opacity: 0; transform: translateY(-12px); } }

/* ---------- Aparición al hacer scroll ---------- */
.js [data-ver] { transition: opacity 1s var(--curva), transform 1s var(--curva); transition-delay: calc(var(--d, 0) * 70ms); }
.js [data-ver]:not(.visto) { opacity: 0; transform: translateY(30px); }

.tours { scroll-margin-top: var(--marco); }

/* ---------- Tours: la tarjeta crece hasta ser el fondo ---------- */
.t1 {
  position: relative;
  height: calc(100svh - 2 * var(--marco));
  min-height: 660px;
  border-radius: 28px;
  overflow: hidden;
  isolation: isolate;
  container-type: inline-size;
  background: var(--tinta);
  color: var(--papel);
}
.t1-fondo, .t1-mov img { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: var(--foco, 50%) 50%; }
.t1-ventana { position: absolute; inset: 0; pointer-events: none; }
.t1-mov { position: absolute; inset: 0; transform-origin: 0 0; }
.t1-velo {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5, 10, 17, .55) 0%, rgba(5, 10, 17, 0) 22%),
    linear-gradient(90deg, rgba(5, 10, 17, .84) 0%, rgba(5, 10, 17, .56) 36%, rgba(5, 10, 17, .08) 68%),
    linear-gradient(0deg, rgba(5, 10, 17, .66) 0%, rgba(5, 10, 17, 0) 44%);
}
.t1-cab { position: absolute; inset: 96px var(--borde) auto; display: flex; align-items: center; justify-content: space-between; }
.t1-rotulo { display: inline-flex; align-items: center; gap: 10px; margin: 0; font-size: .75rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }
.t1-rotulo::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ambar); }
.t1-total { margin: 0; font-size: .9rem; font-variant-numeric: tabular-nums; color: var(--papel-suave); }
.t1-total b { color: var(--papel); font-weight: 600; }

.t1-info { position: absolute; left: var(--borde); bottom: clamp(26px, 5vh, 54px); width: min(45cqw, 560px); }
.t1-zona { display: inline-block; margin: 0; padding: 6px 12px; border-radius: 999px; background: var(--vidrio-oscuro); box-shadow: inset 0 0 0 1px var(--linea); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }
.t1-info h2 {
  margin: 16px 0 14px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.6rem, 6cqw, 5.4rem);
  line-height: .94;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.t1-texto { margin: 0; max-width: 46ch; color: var(--papel-suave); font-size: clamp(.97rem, 1.15vw, 1.08rem); line-height: 1.52; }
.t1-listas { display: grid; gap: 12px; margin-top: 18px; }
.t1-aviso { margin: 12px 0 0; font-size: .82rem; color: var(--ambar); }
.t1-aviso:empty { display: none; }
.t1-acciones { margin-top: 24px; }
.t-linea { transition: opacity .28s var(--curva), transform .28s var(--curva); }
.sale .t-linea { opacity: 0; transform: translateY(-14px); }
.entra-ya .t-linea { animation: sube .8s var(--curva) both; animation-delay: calc(var(--i) * 70ms); }

.t1-lado { position: absolute; left: 53cqw; right: 0; bottom: clamp(26px, 5vh, 54px); display: flex; flex-direction: column; gap: 22px; }
.t1-carril { display: flex; gap: 16px; padding-top: 14px; overflow: hidden; }
.t1-carta {
  position: relative;
  flex: none;
  width: clamp(140px, 12.6cqw, 198px);
  aspect-ratio: 2 / 3;
  padding: 0;
  border: 0;
  border-radius: 20px;
  overflow: hidden;
  background: var(--tinta);
  color: var(--papel);
  text-align: left;
  cursor: pointer;
  transition: transform .6s var(--curva);
}
.t1-carta.actual { display: none; }
.t1-carta img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--curva); }
.t1-carta::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(5, 10, 17, .82) 0%, rgba(5, 10, 17, 0) 58%); }
.t1-carta:hover { transform: translateY(-10px); }
.t1-carta:hover img { transform: scale(1.07); }
.t1-carta-txt { position: absolute; inset: auto 14px 14px; z-index: 1; }
.t1-carta-txt small { display: block; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--papel-suave); }
.t1-carta-txt strong { display: block; margin-top: 4px; font-family: var(--display); font-weight: 600; font-size: 1.02rem; line-height: 1.12; letter-spacing: -.01em; }

.t1-control { display: flex; align-items: center; gap: 12px; padding-right: var(--borde); }
.redondo {
  display: grid;
  place-items: center;
  flex: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--vidrio);
  box-shadow: inset 0 0 0 1px var(--linea);
  color: inherit;
  cursor: pointer;
  transition: background .5s var(--curva), color .5s var(--curva), transform .5s var(--curva);
}
.redondo svg { width: 16px; height: 16px; }
.redondo:hover { background: var(--papel); color: var(--tinta); }
.redondo:active { transform: scale(.94); }
.t1-barra { position: relative; flex: 1; height: 2px; margin-inline: 10px; background: var(--linea); overflow: hidden; }
.t1-barra i { position: absolute; inset: 0; background: var(--papel); transform-origin: left; transform: scaleX(var(--avance, .09)); transition: transform .9s var(--curva); }
.t1-num { font-family: var(--display); font-weight: 800; font-size: 2.6rem; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }

/* ---------- Teléfono ---------- */
@media (max-width: 860px) {
  .mega, .telon { display: none; }

  .t1 { display: flex; flex-direction: column; gap: 22px; height: auto; min-height: calc(100svh - 2 * var(--marco)); padding: 84px 18px 78px; border-radius: 22px; }
  .t1-velo { background: linear-gradient(180deg, rgba(5, 10, 17, .6) 0%, rgba(5, 10, 17, .5) 30%, rgba(5, 10, 17, .88) 62%, rgba(5, 10, 17, .94) 100%); }
  .t1-cab, .t1-info, .t1-lado { position: relative; inset: auto; left: auto; right: auto; bottom: auto; width: auto; }
  .t1-info { margin-top: auto; }
  .t1-info h2 { font-size: clamp(2.3rem, 11cqw, 3.4rem); }
  .t1-lado { margin-inline: -18px; }
  .t1-carril { padding-inline: 18px; overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none; }
  .t1-carril::-webkit-scrollbar { display: none; }
  .t1-carta { width: 128px; scroll-snap-align: start; }
  .t1-carta:hover { transform: none; }
  .t1-control { padding-inline: 18px; }
  .t1-num { font-size: 2rem; }

}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-ver]:not(.visto) { opacity: 1; transform: none; }
}