/* ═══════════════════════════════════════════════════════════════
   nav.css — Navegacion principal, compartida en todas las paginas
═══════════════════════════════════════════════════════════════ */

.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.35s ease, backdrop-filter 0.35s ease,
              box-shadow 0.35s ease;
}

.nav.nav--scrolled {
  background: rgba(7 5 20 / 0.80);
  backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(255 255 255 / 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

/* ── Logo ── */
.nav__logo {
  display: flex;
  align-items: center;
  margin-inline-end: auto;
}
.nav__logo-img {
  height: clamp(1.6rem, 3.5vw, 2.4rem);
  width: auto;
  object-fit: contain;
  display: block;
}

/* ── Links ── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  position: relative;
  overflow: hidden;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--trans-base), background var(--trans-base),
              transform 0.2s var(--ease-spring);
}
.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
  background: rgba(255 255 255 / 0.06);
}

/* Spring scale — whileHover / whileTap */
.nav__link:hover  { transform: scale(1.01); }
.nav__link:active { transform: scale(0.97); }

/*
  ::before — border shine
  Tecnica: padding:1px + mask-composite:exclude revela solo
  el anillo de 1px del borde, igual que la capa <span> del componente.
*/
.nav__link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    -75deg,
    transparent 30%,
    rgba(255 255 255 / 0.55) 50%,
    transparent 70%
  );
  background-size: 200% 100%;
  background-position: 200% 0;
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  animation: navShine 2s linear infinite;
}

/*
  ::after — text shine overlay
  Barre un halo de luz sobre el label, offset leve respecto al borde.
*/
.nav__link::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    -75deg,
    transparent 30%,
    rgba(255 255 255 / 0.30) 50%,
    transparent 70%
  );
  background-size: 200% 100%;
  background-position: 200% 0;
  pointer-events: none;
  opacity: 0;
  animation: navShine 2s linear infinite 0.08s;
}

/*
  Stagger por link para que no brillen todos a la vez.
  Ciclo de 2s: delay de 0.5s entre cada item.
*/
.nav__links li:nth-child(1) .nav__link::before { animation-delay: 0.00s; }
.nav__links li:nth-child(1) .nav__link::after  { animation-delay: 0.08s; }
.nav__links li:nth-child(2) .nav__link::before { animation-delay: 0.40s; }
.nav__links li:nth-child(2) .nav__link::after  { animation-delay: 0.48s; }
.nav__links li:nth-child(3) .nav__link::before { animation-delay: 0.80s; }
.nav__links li:nth-child(3) .nav__link::after  { animation-delay: 0.88s; }
.nav__links li:nth-child(4) .nav__link::before { animation-delay: 1.20s; }
.nav__links li:nth-child(4) .nav__link::after  { animation-delay: 1.28s; }
.nav__links li:nth-child(5) .nav__link::before { animation-delay: 1.60s; }
.nav__links li:nth-child(5) .nav__link::after  { animation-delay: 1.68s; }

/* ── Shine keyframe ── */
/*
  2s total = 1s sweep (0%-50%) + 1s pausa (50%-100%).
  Al 50% se hace jump invisible de vuelta a 200% para el proximo ciclo.
*/
@keyframes navShine {
  0%        { background-position: 200%  0; opacity: 0; }
  10%       { opacity: 1; }
  45%       { opacity: 0; }
  49%       { background-position: -50% 0; opacity: 0; }
  50%, 100% { background-position: 200%  0; opacity: 0; }
}

/* ── Burger ── */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  padding: 0.35rem;
}
.nav__burger-line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
.nav__burger.is-open .nav__burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open .nav__burger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__burger.is-open .nav__burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Overlay ── */
.nav__overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0 0 0 / 0.55);
  backdrop-filter: blur(4px);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.nav__overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Mobile drawer ── */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    inset-block: 0;
    inset-inline-end: 0;
    width: min(80vw, 300px);
    background: rgba(10 8 30 / 0.95);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(255 255 255 / 0.06);
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: calc(var(--nav-h) + 1rem) 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease-out);
    z-index: 100;
  }
  .nav__links.is-open    { transform: translateX(0); }
  .nav__link             { width: 100%; font-size: 1.05rem; padding: 0.6rem 1rem; }
  .nav__cta              { display: none; }
  .nav__burger           { display: flex; }
  .nav__overlay          { display: block; pointer-events: none; }
}