:root {
  --sf-nav-bg: #ffffff;
  --sf-nav-text: #555555;
  --sf-nav-active: #E64A19;
  --sf-nav-accent: #FFC107;
  --sf-nav-border: rgba(0, 0, 0, 0.08);
}

.sf-bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1200;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  min-height: 88px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0px));
  background: var(--sf-nav-bg);
  border-top: 1px solid var(--sf-nav-border);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.12);
}

.sf-bottom-nav__link {
  position: relative;
  min-height: 70px;
  border-radius: 16px;
  color: var(--sf-nav-text);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font: 700 0.85rem/1.1 'Roboto', 'Nunito Sans', Arial, sans-serif;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.sf-bottom-nav__link i {
  font-size: 1.3rem;
  transition: transform 0.2s ease;
}

.sf-bottom-nav__link.is-active {
  color: var(--sf-nav-active);
  background: rgba(255, 193, 7, 0.18);
}

.sf-bottom-nav__link.is-active i {
  transform: translateY(-1px);
}

.sf-bottom-nav__link:focus-visible {
  outline: 3px solid rgba(255, 193, 7, 0.65);
  outline-offset: 2px;
}

.sf-bottom-nav__badge {
  position: absolute;
  top: 6px;
  right: calc(50% - 24px);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--sf-nav-accent);
  color: #2C2C2C;
  border: 2px solid var(--sf-nav-bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
}

body {
  padding-bottom: calc(104px + env(safe-area-inset-bottom, 0px)) !important;
}

@media (max-width: 768px) {
  .cart-btn {
    display: none !important;
  }

  .sf-bottom-nav {
    gap: 2px;
    min-height: 78px;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
  }

  .sf-bottom-nav__link {
    min-height: 56px;
    border-radius: 14px;
    gap: 4px;
    font: 700 0.72rem/1.1 'Roboto', 'Nunito Sans', Arial, sans-serif;
  }

  .sf-bottom-nav__link i {
    font-size: 1.15rem;
  }
}