/* iron.cat · navegación de producto compartida
   Cuatro destinos viven dentro de una cápsula glass. Registro es una acción
   separada: no compite por espacio ni se disfraza de quinta sección. */

.ic-app-nav {
  --ic-app-nav-surface: rgba(var(--ic-surface-raised-rgb) / 0.82);
  --ic-app-nav-border: rgba(var(--ic-white-rgb) / 0.76);
  --ic-app-nav-ink: rgba(var(--ic-petrol-rgb) / 0.7);
  box-sizing: border-box;
  font-family: var(--ic-font-body);
}

.ic-app-nav *,
.ic-app-nav *::before,
.ic-app-nav *::after { box-sizing: border-box; }

/* El dock solo coloca las dos piezas. El cristal pertenece a cada superficie,
   de modo que el hueco entre la navegación y el + queda realmente abierto. */
.ic-app-nav--dock {
  position: fixed;
  z-index: 80;
  bottom: max(16px, env(safe-area-inset-bottom));
  left: 50%;
  width: min(620px, calc(100vw - 32px));
  min-height: 78px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 78px;
  align-items: center;
  gap: 12px;
  pointer-events: none;
  transform: translateX(-50%);
}

.ic-app-nav__rail {
  position: relative;
  min-width: 0;
  min-height: 78px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  gap: 2px;
  padding: 8px 10px;
  overflow: hidden;
  pointer-events: auto;
  border: 1px solid var(--ic-app-nav-border);
  border-radius: var(--ic-radius-pill);
  background: var(--ic-app-nav-surface);
  box-shadow:
    0 18px 48px rgba(var(--ic-petrol-rgb) / 0.14),
    inset 0 1px 0 rgba(var(--ic-white-rgb) / 0.86);
  -webkit-backdrop-filter: blur(24px) saturate(1.22);
  backdrop-filter: blur(24px) saturate(1.22);
  isolation: isolate;
}

.ic-app-nav__rail::before {
  position: absolute;
  z-index: -1;
  inset: 3px;
  border: 1px solid rgba(var(--ic-cream-rgb) / 0.34);
  border-radius: var(--ic-radius-pill);
  content: "";
  pointer-events: none;
}

.ic-app-nav__item {
  position: relative;
  min-width: 0;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  padding: 7px 4px 5px;
  color: var(--ic-app-nav-ink);
  background: transparent;
  border: 0;
  border-radius: var(--ic-radius-lg);
  font: inherit;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    color var(--ic-duration-base) var(--ic-ease-standard),
    background var(--ic-duration-base) var(--ic-ease-standard),
    border-color var(--ic-duration-base) var(--ic-ease-standard),
    box-shadow var(--ic-duration-base) var(--ic-ease-standard),
    transform var(--ic-duration-fast) var(--ic-ease-standard);
}

.ic-app-nav__icon {
  position: relative;
  width: 35px;
  height: 30px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 10px;
  transition:
    color var(--ic-duration-base) var(--ic-ease-standard),
    background var(--ic-duration-base) var(--ic-ease-standard),
    box-shadow var(--ic-duration-base) var(--ic-ease-standard),
    transform var(--ic-duration-slow) var(--ic-ease-soft);
}

.ic-app-nav__icon svg {
  display: block;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.ic-app-nav__label {
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  font-size: 11px;
  font-weight: 650;
  line-height: 1.15;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* El estado actual no crea una segunda cápsula dentro del cristal. La tinta
   gana contraste y un punto coral mínimo confirma la ubicación. */
.ic-app-nav__item.is-active:not(.ic-app-nav__item--action) {
  color: var(--ic-color-petrol-950);
  background: transparent;
  box-shadow: none;
}

.ic-app-nav__item.is-active:not(.ic-app-nav__item--action)::before {
  position: absolute;
  bottom: 3px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ic-color-coral);
  transform: translateX(-50%);
  content: "";
}

.ic-app-nav__item.is-active:not(.ic-app-nav__item--action) .ic-app-nav__icon {
  color: var(--ic-color-petrol-950);
  background: transparent;
  box-shadow: none;
  transform: translateY(-1px);
}

.ic-app-nav__item.is-active:not(.ic-app-nav__item--action) .ic-app-nav__icon svg {
  stroke-width: 2.15;
}

.ic-app-nav__item.is-active:not(.ic-app-nav__item--action) .ic-app-nav__label {
  font-weight: 700;
  letter-spacing: -0.01em;
}

.ic-app-nav__badge {
  position: absolute;
  top: 5px;
  left: calc(50% + 9px);
  min-width: 18px;
  height: 18px;
  display: grid;
  padding-inline: 4px;
  place-items: center;
  color: var(--ic-color-white);
  background: var(--ic-color-coral);
  border: 2px solid rgba(var(--ic-surface-raised-rgb) / 0.96);
  border-radius: var(--ic-radius-pill);
  font: 700 9px/1 var(--ic-font-mono);
  font-style: normal;
}

/* Acción separada inspirada en el patrón bottom-bar + FAB. La superficie es
   glass en reposo y coral únicamente cuando Registro es la vista actual. */
.ic-app-nav__item--action {
  width: 78px;
  min-height: 78px;
  gap: 0;
  padding: 0;
  pointer-events: auto;
  color: var(--ic-color-petrol-950);
  background: rgba(var(--ic-surface-raised-rgb) / 0.88);
  border: 1px solid var(--ic-app-nav-border);
  border-radius: 50%;
  box-shadow:
    0 18px 42px rgba(var(--ic-petrol-rgb) / 0.16),
    inset 0 1px 0 rgba(var(--ic-white-rgb) / 0.92);
  -webkit-backdrop-filter: blur(24px) saturate(1.22);
  backdrop-filter: blur(24px) saturate(1.22);
  isolation: isolate;
}

.ic-app-nav__item--action::before {
  position: absolute;
  z-index: -1;
  inset: 4px;
  border: 1px solid rgba(var(--ic-cream-rgb) / 0.46);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.ic-app-nav__item--action::after {
  position: absolute;
  z-index: -2;
  inset: -3px;
  border: 2px solid rgba(var(--ic-coral-rgb) / 0.44);
  border-radius: 50%;
  opacity: 0;
  content: "";
  pointer-events: none;
}

.ic-app-nav__item--action .ic-app-nav__icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.ic-app-nav__item--action .ic-app-nav__icon svg {
  width: 27px;
  height: 27px;
  stroke-width: 1.8;
  transform-origin: center;
}

.ic-app-nav__item--action .ic-app-nav__label { display: none; }

.ic-app-nav__item--action.is-active {
  color: var(--ic-color-white);
  background: var(--ic-color-coral);
  border-color: rgba(var(--ic-cream-rgb) / 0.92);
  box-shadow:
    0 0 0 2px rgba(var(--ic-mustard-rgb) / 0.72),
    0 18px 42px rgba(var(--ic-coral-rgb) / 0.28),
    inset 0 1px 0 rgba(var(--ic-white-rgb) / 0.38);
}

.ic-app-nav__item--action:active {
  transform: scale(0.95);
}

.ic-app-nav__item--action.is-activating {
  animation: ic-app-nav-action-pop 520ms var(--ic-ease-soft) both;
}

.ic-app-nav__item--action.is-activating .ic-app-nav__icon svg {
  animation: ic-app-nav-action-plus 520ms var(--ic-ease-soft) both;
}

.ic-app-nav__item--action.is-activating::after {
  animation: ic-app-nav-action-halo 520ms var(--ic-ease-soft) both;
}

.ic-app-nav__item:focus-visible {
  outline: 2px solid var(--ic-color-petrol-950);
  outline-offset: 3px;
}

.ic-app-nav__item--action:focus-visible {
  outline-color: var(--ic-color-petrol-950);
  box-shadow:
    0 0 0 4px rgba(var(--ic-mustard-rgb) / 0.78),
    0 18px 42px rgba(var(--ic-petrol-rgb) / 0.16);
}

@keyframes ic-app-nav-action-pop {
  0% { transform: scale(0.94); }
  46% { transform: scale(1.075); }
  74% { transform: scale(0.99); }
  100% { transform: none; }
}

/* 180° termina visualmente igual que 0° porque el + es simétrico: no hay salto
   cuando JS retira la clase al terminar. */
@keyframes ic-app-nav-action-plus {
  0% { transform: rotate(0deg) scale(1); }
  44% { transform: rotate(108deg) scale(0.82); }
  72% { transform: rotate(164deg) scale(1.08); }
  100% { transform: rotate(180deg) scale(1); }
}

@keyframes ic-app-nav-action-halo {
  0% { opacity: 0.36; transform: scale(0.86); }
  100% { opacity: 0; transform: scale(1.34); }
}

@media (hover: hover) and (pointer: fine) {
  .ic-app-nav__item:not(.ic-app-nav__item--action):not(.is-active):hover {
    color: var(--ic-color-petrol-950);
    background: rgba(var(--ic-sage-rgb) / 0.28);
  }

  .ic-app-nav__item--action:not(.is-active):hover {
    color: var(--ic-color-petrol-950);
    background: var(--ic-color-sage);
    box-shadow:
      0 18px 38px rgba(var(--ic-petrol-rgb) / 0.14),
      inset 0 1px 0 rgba(var(--ic-white-rgb) / 0.82);
    transform: translateY(-2px);
  }
}

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .ic-app-nav__rail,
  .ic-app-nav__item--action { background: rgba(var(--ic-surface-raised-rgb) / 0.97); }

  .ic-app-nav__item--action.is-active { background: var(--ic-color-coral); }
}

@media (max-width: 640px) {
  .ic-app-nav--dock {
    bottom: max(10px, env(safe-area-inset-bottom));
    width: min(560px, calc(100vw - 20px));
    min-height: 68px;
    grid-template-columns: minmax(0, 1fr) 64px;
    gap: 8px;
  }

  .ic-app-nav__rail {
    min-height: 68px;
    gap: 0;
    padding: 6px 4px;
  }

  .ic-app-nav__item { min-height: 54px; gap: 3px; padding-inline: 2px; }
  .ic-app-nav__icon { width: 31px; height: 28px; }
  .ic-app-nav__icon svg { width: 19px; height: 19px; }
  .ic-app-nav__label { font-size: 10px; }
  .ic-app-nav__item--action { width: 64px; min-height: 64px; }
  .ic-app-nav__item--action .ic-app-nav__icon { width: 38px; height: 38px; }
  .ic-app-nav__item--action .ic-app-nav__icon svg { width: 25px; height: 25px; }
  .ic-app-nav__badge { top: 3px; left: calc(50% + 7px); }
}

@media (max-width: 360px) {
  .ic-app-nav--dock {
    width: calc(100vw - 12px);
    grid-template-columns: minmax(0, 1fr) 60px;
    gap: 6px;
  }

  .ic-app-nav__label { font-size: 9px; }
  .ic-app-nav__item--action { width: 60px; min-height: 60px; }
}

@media (prefers-reduced-motion: reduce) {
  .ic-app-nav__item,
  .ic-app-nav__icon,
  .ic-app-nav__icon svg { transition-duration: 0.01ms !important; }

  .ic-app-nav__item--action:active { transform: none; }
  .ic-app-nav__item--action.is-activating,
  .ic-app-nav__item--action.is-activating .ic-app-nav__icon svg,
  .ic-app-nav__item--action.is-activating::after { animation: none !important; }
}

@media (prefers-contrast: more) {
  .ic-app-nav__rail,
  .ic-app-nav__item--action {
    border-color: var(--ic-color-petrol-950);
    background: var(--ic-color-paper);
  }

  .ic-app-nav__item--action.is-active {
    color: var(--ic-color-white);
    background: var(--ic-color-coral);
  }

  .ic-app-nav__item.is-active:not(.ic-app-nav__item--action) {
    box-shadow: inset 0 0 0 2px var(--ic-color-petrol-950);
  }
}