/**
 * Alves Finança Familiar — Bottom Navigation (Módulo 17-A do PRD)
 * Desenvolvido por Juliano Alves
 */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 0.5px solid var(--nav-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 6px 12px calc(6px + var(--safe-bottom));
  z-index: 100;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--nav-item-inactive);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  transition: color var(--transition-fast), transform var(--transition-fast);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.bottom-nav-item:active {
  transform: scale(0.94);
}

.bottom-nav-icon {
  font-size: 20px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bottom-nav-item.active {
  color: var(--nav-item-active);
  font-weight: 600;
}

/* Botão Central "Adicionar" (Destacado — PRD §17-A) */
.bottom-nav-add-btn {
  background-color: var(--accent);
  color: var(--accent-contrast);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  margin-top: -12px;
}

.bottom-nav-add-btn:active {
  transform: scale(0.92);
}

.bottom-nav-add-btn i,
.bottom-nav-add-btn svg {
  font-size: 24px;
  stroke-width: 2.5;
}