/* ═══════════════════════════════════════════
   NAVBAR — Siempre visible, fija arriba
   ═══════════════════════════════════════════ */

:root {
  --header-offset: calc(var(--header-h) + env(safe-area-inset-top, 0px));
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay);
  width: 100%;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(6, 6, 8, 0.97);
  border-bottom: 1px solid var(--borde-strong);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.45),
    0 1px 0 rgba(255, 255, 255, 0.04) inset;
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  transition: box-shadow var(--dur-base);
}

[data-theme="light"] .site-header {
  background: rgba(255, 255, 255, 0.98);
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.1),
    0 1px 0 rgba(0, 0, 0, 0.04) inset;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--rojo-oscuro) 15%,
    var(--rojo-vivo) 35%,
    var(--oro) 50%,
    var(--rojo-vivo) 65%,
    var(--rojo-oscuro) 85%,
    transparent 100%
  );
  opacity: 0.9;
  pointer-events: none;
}

.site-header.scrolled {
  box-shadow:
    0 6px 32px rgba(0, 0, 0, 0.55),
    0 0 28px rgba(204, 0, 0, 0.1);
}

[data-theme="light"] .site-header.scrolled {
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.12);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: min(100%, calc(var(--container) + 48px));
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 max(var(--space-4), env(safe-area-inset-left, 0px)) 0 max(var(--space-4), env(safe-area-inset-right, 0px));
}

.site-header .brand {
  flex-shrink: 0;
  font-size: var(--text-lg);
  gap: var(--space-2);
  color: var(--texto);
}

.site-header .brand-mark {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--rojo-vivo), var(--rojo-oscuro));
  font-family: var(--font-display);
  font-size: var(--text-base);
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-rojo);
  transition: transform var(--dur-base) var(--ease-spring), box-shadow var(--dur-base);
}

.site-header .brand:hover .brand-mark {
  transform: scale(1.05);
  box-shadow: 0 0 24px rgba(204, 0, 0, 0.55);
}

.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--borde);
}

[data-theme="light"] .site-nav {
  background: rgba(0, 0, 0, 0.04);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--texto);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  opacity: 0.88;
  transition:
    color var(--dur-fast),
    background var(--dur-fast),
    box-shadow var(--dur-fast),
    opacity var(--dur-fast);
}

.nav-link:hover {
  opacity: 1;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .nav-link {
  color: var(--texto);
}

[data-theme="light"] .nav-link:hover {
  color: var(--texto);
  background: rgba(0, 0, 0, 0.05);
}

.nav-link.is-active {
  opacity: 1;
  color: #ffffff;
  background: linear-gradient(135deg, var(--rojo-vivo), var(--rojo-oscuro));
  box-shadow: var(--shadow-rojo);
}

.nav-link--highlight {
  color: var(--oro-claro);
  opacity: 1;
}

.nav-link--highlight:hover {
  color: var(--oro);
  background: rgba(212, 175, 55, 0.14);
}

.nav-link--buy {
  font-weight: 600;
}

.nav-cta-group {
  display: none;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.button--nav {
  min-height: 38px;
  padding: 8px 18px;
  font-size: var(--text-sm);
  font-weight: 600;
}

.button--nav-primary {
  background: linear-gradient(135deg, var(--rojo-vivo), var(--rojo-oscuro));
  color: #fff;
  border: none;
  box-shadow: 0 4px 16px rgba(204, 0, 0, 0.4);
}

.button--nav-primary:hover {
  box-shadow: 0 6px 24px rgba(204, 0, 0, 0.55);
  transform: translateY(-1px);
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px 6px 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--borde-strong);
  background: var(--bg-card);
  color: var(--texto);
  font-size: var(--text-sm);
  font-weight: 500;
  max-width: 160px;
}

.user-chip--mobile {
  justify-content: center;
  width: 100%;
  max-width: none;
}

.user-chip__avatar {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--oro), var(--oro-claro));
  color: #000;
  font-family: var(--font-display);
  font-size: var(--text-sm);
}

.user-chip__name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.header-logout-form {
  display: none;
}

.theme-toggle,
.nav-toggle {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--borde-strong);
  display: grid;
  place-items: center;
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.06);
  color: var(--texto-sec);
}

.theme-toggle:hover {
  border-color: var(--oro);
  color: var(--oro);
  background: rgba(212, 175, 55, 0.12);
}

.nav-toggle {
  background: linear-gradient(135deg, var(--rojo-suave), rgba(204, 0, 0, 0.08));
  color: var(--rojo-vivo);
}

.nav-toggle:hover,
.nav-toggle.is-open {
  background: var(--rojo);
  color: #fff;
  border-color: var(--rojo);
  box-shadow: var(--shadow-rojo);
}

.nav-toggle .icon-close {
  display: none;
}

.nav-toggle.is-open .icon-menu {
  display: none;
}

.nav-toggle.is-open .icon-close {
  display: block;
}

/* Backdrop móvil */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-overlay) - 2);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base), visibility var(--dur-base);
}

.mobile-nav-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-backdrop[hidden] {
  display: block;
}

.mobile-nav-backdrop[hidden]:not(.is-open) {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Menú móvil — debajo del header, header siempre visible */
.mobile-nav {
  position: fixed;
  top: var(--header-offset);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: calc(var(--z-overlay) - 1);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
  padding:
    var(--space-4)
    max(var(--space-4), env(safe-area-inset-right, 0px))
    calc(var(--space-8) + env(safe-area-inset-bottom, 0px))
    max(var(--space-4), env(safe-area-inset-left, 0px));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  background: rgba(8, 8, 10, 0.98);
  border-top: 1px solid var(--borde);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--dur-base),
    visibility var(--dur-base),
    transform var(--dur-base);
}

[data-theme="light"] .mobile-nav {
  background: rgba(255, 255, 255, 0.99);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%, rgba(204, 0, 0, 0.12), transparent),
    radial-gradient(ellipse 50% 30% at 90% 90%, rgba(212, 175, 55, 0.08), transparent);
  pointer-events: none;
}

.mobile-nav > * {
  position: relative;
  z-index: 1;
}

.mobile-nav .nav-link {
  width: 100%;
  justify-content: center;
  min-height: 48px;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  opacity: 1;
  color: var(--texto);
  border: 1px solid var(--borde);
  background: rgba(255, 255, 255, 0.03);
}

.mobile-nav .nav-link.is-active {
  border-color: transparent;
}

.mobile-nav__cta {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--borde);
}

.mobile-nav__cta .button {
  width: 100%;
  min-height: 48px;
}

/* Offset del contenido — navbar fija (auth usa su propio padding) */
body:not(.auth-page) {
  padding-top: var(--header-offset);
}

@media (min-width: 1024px) {
  .site-nav,
  .nav-cta-group {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav,
  .mobile-nav-backdrop {
    display: none;
  }

  .header-logout-form {
    display: inline-flex;
  }
}

@media (max-width: 1023px) {
  .site-nav,
  .nav-cta-group {
    display: none;
  }
}

@media (max-width: 480px) {
  .brand-text {
    display: none;
  }

  .site-header__inner {
    padding-inline: var(--space-3);
  }
}