/* =====================================================================
   Bottom Navigation Bar
   Fixed floating nav for mobile — Habits / Cats / Config
   ===================================================================== */

.bottom-nav {
  align-items: stretch;
  background-color: rgb(255 255 255 / 0.73);
  backdrop-filter: blur(10px);
  border-block-start: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  bottom: 0;
  box-shadow: 0 -4px 16px 0 rgb(0 0 0 / 0.08);
  display: flex;
  inset-inline: 0;
  padding-block-end: env(safe-area-inset-bottom, 0px);
  position: fixed;
  z-index: 50;
  margin: 10px 15px;
}

/* Sliding indicator pill — positioned behind the active tab */
.bottom-nav__indicator {
  background-color: color-mix(in srgb, var(--color-primary) 14%, transparent);
  block-size: 100%;
  border-radius: var(--radius-lg);
  inset-block-start: 0;
  inset-inline-start: 0;
  pointer-events: none;
  position: absolute;
  transition: transform 350ms cubic-bezier(0.4, 0, 0.15, 1),
              width    350ms cubic-bezier(0.4, 0, 0.15, 1),
              opacity  200ms ease;
  will-change: transform, width;
}

.bottom-nav__item {
  align-items: center;
  color: var(--color-text-subtle);
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--size-1);
  justify-content: center;
  min-block-size: 3.5rem; /* 56px — exceeds 44px min touch target */
  padding-block: var(--size-2);
  position: relative;
  text-decoration: none;
  transition: color var(--time-200) ease;
  z-index: 1; /* above the indicator */

  &:hover,
  &:focus-visible {
    color: var(--color-text);
  }

  &:focus-visible {
    outline: 2px solid var(--color-selected-dark);
    outline-offset: -2px;
    border-radius: var(--radius-sm);
  }

  &[aria-current="page"] {
    color: var(--color-primary);
  }

  &[aria-current="page"] .bottom-nav__icon {
    animation: nav-icon-pop 350ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
  }

  &[aria-current="page"] .bottom-nav__label {
    font-weight: var(--font-semibold);
  }
}

.bottom-nav__icon {
  block-size: 1.5rem;    /* 24px */
  display: block;
  inline-size: 1.5rem;   /* 24px */
  transition: transform var(--time-200) ease;

  svg {
    block-size: 100%;
    inline-size: 100%;
  }
}

.bottom-nav__label {
  font-size: var(--text-caption);
  font-weight: var(--font-medium);
  line-height: 1;
  transition: font-weight var(--time-200) ease;
}

@keyframes nav-icon-pop {
  0%   { transform: scale(0.85); }
  60%  { transform: scale(1.15); }
  100% { transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .bottom-nav__indicator { transition: none; }
  .bottom-nav__item[aria-current="page"] .bottom-nav__icon {
    animation: none;
  }
}

/* Push main content above the nav so nothing is obscured */
.has-bottom-nav #main {
  padding-block-end: calc(3.5rem + env(safe-area-inset-bottom, 0px));
}