/* ============================================================
   lice.cl · nav.css
   ────────────────────────────────────────────────────────────
   Estilos de la barra de navegación superior (sticky)
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid color-mix(in srgb, var(--rule) 50%, transparent);
  transition: border-color .25s var(--ease-out), background-color .25s var(--ease-out), box-shadow .25s var(--ease-out);
}
.nav.is-scrolled {
  border-bottom-color: var(--rule);
  box-shadow: var(--shadow-sm);
}

/* Fallback sin backdrop-filter: fondo sólido opaco */
@supports not (backdrop-filter: blur(1px)) {
  .nav { background: var(--bg); }
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
  min-width: 0;
}

.brand {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--ink);
  min-width: 0;
  flex-shrink: 1;
}
.brand__mark {
  width: 28px; height: 28px;
  color: var(--brand);
  flex-shrink: 0;
}
.brand__mark svg { width: 100%; height: 100%; }
.brand__text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(15px, 4.2vw, 18px);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: baseline;
  min-width: 0;
}
.brand__name { color: var(--ink); }
.brand__tld { color: var(--ink-3); font-weight: 400; font-size: 0.85em; margin-left: 1px; }

.nav__links {
  display: none;
  align-items: center;
  gap: 8px;
}
@media (min-width: 960px) { .nav__links { display: flex; } }
.nav__links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--ink-2);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background-color .2s var(--ease-out), color .2s var(--ease-out);
}
.nav__links a:hover {
  color: var(--ink);
  background: var(--bg-2);
}
.nav__links a .nav__icon {
  width: 15px;
  height: 15px;
  color: var(--ink-3);
  transition: color .15s var(--ease-out);
  flex-shrink: 0;
}
.nav__links a:hover .nav__icon {
  color: var(--brand);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
@media (min-width: 960px) {
  .nav__actions { display: none !important; }
}

.theme-toggle {
  display: none !important;
}

/* ============================================================
   BOTÓN HAMBURGUESA / SANDWICH MÓVIL
   ============================================================ */

.nav__burger {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  border: 1px solid var(--rule);
  background: var(--bg-2);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  transition: border-color .15s var(--ease-out), background-color .15s var(--ease-out);
}
.nav__burger:hover {
  border-color: var(--brand);
  background: var(--bg-3);
}
.nav__burger:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.nav__burger span {
  width: 20px;
  height: 2px;
  background-color: var(--ink);
  display: block;
  border-radius: 2px;
  transition: transform .2s var(--ease-out), opacity .15s var(--ease-out);
  transform-origin: center;
}
.nav__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 960px) {
  .nav__burger { display: none !important; }
}

/* ============================================================
   MENÚ DESPLEGABLE MÓVIL
   ============================================================ */

.nav__mobile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px 24px;
  border-top: 1px solid var(--rule);
  background: var(--bg);
  animation: navMobileIn .25s var(--ease-out);
  box-shadow: var(--shadow-lg);
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
}

.nav__mobile[hidden] {
  display: none !important;
}

@keyframes navMobileIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav__mobile a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--ink-2);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  min-height: 48px;
  transition: background-color .2s var(--ease-out), color .2s var(--ease-out);
}
.nav__mobile a:hover,
.nav__mobile a:focus-visible {
  color: var(--ink);
  background: var(--bg-2);
  outline: none;
}
.nav__mobile a .nav__icon {
  width: 18px;
  height: 18px;
  color: var(--brand);
  flex-shrink: 0;
}

/* Fila de Modo Oscuro con Switch Toggle */
.nav__mobile-theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 8px;
  margin-top: 6px;
  margin-bottom: 4px;
  min-height: 48px;
  cursor: pointer;
  user-select: none;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out);
}
.nav__mobile-theme-row:hover {
  border-color: var(--brand);
  background: var(--bg-3);
}
.nav__mobile-theme-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}
.nav__mobile-theme-info svg {
  width: 18px;
  height: 18px;
  color: var(--brand);
  flex-shrink: 0;
}

.nav__theme-switch {
  position: relative;
  width: 42px;
  height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}
.nav__theme-switch:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 999px;
}
.nav__theme-switch-slider {
  position: absolute;
  inset: 0;
  background: var(--rule-strong);
  border-radius: 999px;
  transition: background-color .2s var(--ease-out);
}
.nav__theme-switch-slider::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.25);
  transition: transform .2s var(--ease-out);
}
[data-theme="dark"] .nav__theme-switch-slider {
  background: var(--brand);
}
[data-theme="dark"] .nav__theme-switch-slider::before {
  transform: translateX(18px);
}

.nav__mobile .btn { margin-top: 8px; }

@media (min-width: 960px) {
  .nav__mobile { display: none !important; }
}

@media (max-width: 380px) {
  .nav__mobile {
    padding: 10px 16px 20px;
  }
  .nav__mobile a {
    font-size: 14.5px;
    min-height: 44px;
    padding: 12px 4px;
  }
}