.phone-bottom-nav {
  display: none;
}

@media (max-width: 720px) {
  .phone-bottom-nav {
    position: fixed;
    inset: auto 0 0 0;
    height: calc(60px + env(safe-area-inset-bottom));
    padding: 6px max(12px, env(safe-area-inset-left)) calc(6px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-right));
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 -6px 18px rgba(15, 23, 42, 0.12);
    border-top: 1px solid rgba(15, 23, 42, 0.08);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    z-index: 900;
  }

  .phone-bottom-nav__btn {
    border: none;
    background: transparent;
    border-radius: 12px;
    padding: 8px 6px;
    min-height: 48px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: #0f172a;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
  }

  .phone-bottom-nav__btn:hover {
    background: rgba(79, 139, 255, 0.08);
  }

  .phone-bottom-nav__btn.active {
    background: #eef3ff;
    color: #1d4ed8;
    box-shadow: inset 0 0 0 1px rgba(79, 139, 255, 0.4);
  }

  .phone-bottom-nav__icon {
    font-size: 16px;
    line-height: 1;
  }

  .phone-bottom-nav__label {
    line-height: 1.1;
  }

  body.phone-has-bottom-nav {
    padding-bottom: calc(76px + env(safe-area-inset-bottom));
  }
}