/**
 * NAO STUDIO — DIAL CINÉTICO INFERIOR (CERO CAJA)
 * Navegación flotante continua con estaciones permanentes,
 * 3 rodillos verticales independientes y revelación horizontal in situ sin tirones.
 */

/* Contenedor Raíz Fijo en la Base */
.nao-navbar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: clamp(80px, 11vh, 105px);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  transition: 
    transform var(--time-slow) var(--ease-boutique),
    opacity var(--time-slow) var(--ease-boutique);
}

/* Estados del Contenedor (Sin parpadeos) */
.nao-navbar.is-hidden {
  opacity: 0;
  transform: translateY(100%);
  pointer-events: none;
}

.nao-navbar.is-visible {
  opacity: 1;
  transform: none !important;
  pointer-events: auto;
}

/* Rampa Gaussiana de Desenfoque Progresivo */
.nao-navbar-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background: linear-gradient(to top, rgba(6, 11, 20, 0.85) 0%, rgba(11, 18, 30, 0.42) 55%, transparent 100%);
}

.nao-blur-slice {
  position: absolute;
  inset: 0;
  pointer-events: none;
  will-change: backdrop-filter;
}

.nao-blur-0 {
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 85%, transparent 100%);
}

.nao-blur-1 {
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 70%, transparent 88%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 70%, transparent 88%);
}

.nao-blur-2 {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 55%, transparent 75%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 55%, transparent 75%);
}

.nao-blur-3 {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 40%, transparent 60%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 40%, transparent 60%);
}

.nao-blur-4 {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 25%, transparent 45%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 25%, transparent 45%);
}

.nao-blur-5 {
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 10%, transparent 30%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 10%, transparent 30%);
}

/* Visor y Carril Deslizante del Dial */
.nao-dial-viewport {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: none;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: visible;
  cursor: grab;
}

.nao-dial-viewport.is-dragging {
  cursor: grabbing;
}

.nao-dial-track {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(1.8rem, 3.5vw, 3.8rem);
  transform: translateX(0px);
  will-change: transform;
  white-space: nowrap;
}

/* Estaciones Permanentes del Dial */
.nao-dial-station {
  position: relative;
  display: inline-flex;
  align-items: center;
}

/* Estado Dormido: Sincronía pura sin tirones ni gaps residuales */
.nao-dial-station.is-dormant,
.nao-dial-sep.is-dormant {
  display: none !important;
}

/* Ramas de Navegación Horizontal In Situ (Sub-secciones) */
.nao-dial-station-branches {
  position: relative;
  display: none;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.8rem);
  padding-left: clamp(1.5rem, 3vw, 2.8rem);
}

.nao-dial-station-branches.is-expanded {
  display: inline-flex;
  animation: naoBranchesFadeIn var(--time-norm) var(--ease-boutique) forwards;
}

@keyframes naoBranchesFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Ítems del Dial */
.nao-dial-item {
  position: relative;
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 0.5rem 0.8rem;
  font-family: var(--font-n3-family);
  font-weight: var(--font-n3-weight-bold);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  color: var(--text-muted);
  letter-spacing: var(--font-n3-tracking-btn);
  text-transform: uppercase;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  opacity: 0.45;
  transition: 
    color var(--time-norm) var(--ease-boutique),
    transform var(--time-norm) var(--ease-boutique),
    opacity var(--time-norm) var(--ease-boutique);
  will-change: transform, opacity;
}

.nao-dial-item:hover {
  color: var(--text-secondary);
  opacity: 0.75;
}

/* Ítem Activo (Lente Focal) */
.nao-dial-item.is-active {
  color: var(--text-primary);
  font-weight: 700;
  transform: scale(1.18);
  opacity: 1;
}

/* Indicador Lumínico Focal */
.nao-dial-indicator {
  position: absolute;
  bottom: 0px;
  width: 4px;
  height: 4px;
  background-color: var(--accent-primary);
  border-radius: 50%;
  box-shadow: 0 0 10px 1px var(--accent-secondary);
  opacity: 0;
  transform: scale(0);
  transition: 
    opacity var(--time-norm) var(--ease-boutique),
    transform var(--time-norm) var(--ease-spring);
}

.nao-dial-item.is-active .nao-dial-indicator {
  opacity: 1;
  transform: scale(1);
}

/* Separadores entre estaciones y sub-secciones */
.nao-dial-sep {
  font-family: var(--font-n3-family);
  font-size: 0.65rem;
  color: var(--text-disabled);
  opacity: 0.35;
  pointer-events: none;
  user-select: none;
}

/* Rodillos Verticales Cinéticos */
.nao-dial-reel {
  position: relative;
  height: 84px;
  width: max-content;
  min-width: clamp(220px, 26vw, 380px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 75%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 75%, transparent 100%);
}

.nao-dial-reel-track {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 28px;
  transform: translateY(0px);
  transition: transform 380ms var(--ease-boutique);
  will-change: transform;
}

.nao-dial-reel-item {
  height: 28px;
  line-height: 28px;
  width: 100%;
  text-align: center;
  padding: 0 0.8rem;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-n3-family);
  font-weight: var(--font-n3-weight-bold);
  font-size: clamp(0.78rem, 1vw, 0.92rem);
  letter-spacing: var(--font-n3-tracking-btn);
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.35;
  transform: scale(0.85);
  transition: 
    opacity 320ms var(--ease-boutique),
    transform 320ms var(--ease-boutique),
    color 320ms var(--ease-boutique);
  white-space: nowrap;
  user-select: none;
}

/* El texto del rodillo solo se ilumina si la estación padre o el slot están activos */
.nao-dial-station-head.is-active .nao-dial-reel-item.is-active,
.nao-dial-reel-item.is-active {
  color: var(--text-primary) !important;
  font-weight: 700;
  opacity: 1 !important;
  transform: scale(1.05);
}

@media (max-width: 768px) {
  .nao-navbar {
    height: 75px;
  }

  .nao-dial-track {
    gap: 1.2rem;
  }

  .nao-dial-item {
    font-size: 0.8rem;
    padding: 0.3rem 0.5rem;
  }

  .nao-dial-reel {
    min-width: clamp(180px, 46vw, 260px);
  }

  .nao-dial-station-branches {
    gap: 1rem;
    padding-left: 0.8rem;
  }
}