/* ==========================================================================
   NAVIGATION: FIXED BOTTOM NAVBAR & TABS
   Agenda Semanal
   ========================================================================== */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--nav-height) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background-color: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: var(--z-nav);
  user-select: none;
  -webkit-user-select: none;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: var(--nav-height);
  padding: 6px 0;
  gap: 3px;
  color: var(--text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
}

.nav-item .nav-icon {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.nav-item .nav-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.01em;
  transition: font-weight var(--transition-fast);
}

.nav-item:active {
  transform: scale(0.92);
}

.nav-item.active {
  color: var(--color-accent);
}

.nav-item.active .nav-icon {
  transform: translateY(-1px);
}

.nav-item.active .nav-label {
  font-weight: var(--font-weight-semibold);
}

/* Subtle Active Dot or Glow */
.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: calc(var(--safe-bottom) + 3px);
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
}