/* ==================================================

   CATALYST NAV — Shared navigation component

   ================================================== */

.catalyst-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 56px;
  padding-top: env(safe-area-inset-top, 0);
  border-bottom: 1px solid var(--border);
  background: rgb(245, 243, 240, 0.8);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

.catalyst-nav__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  overflow: hidden;
}

.catalyst-nav .catalyst-nav__logo-img {
  height: 28px;
  width: auto;
  display: block;
  max-height: 28px;
}

/* Flower mark: hidden by default, shown when menu is open */
.catalyst-nav__logo-img--mark {
  display: none !important;
  height: 24px;
  max-height: 24px;
}

body.menu-open .catalyst-nav__logo-img--full {
  display: none !important;
}

body.menu-open .catalyst-nav__logo-img--mark {
  display: block !important;
}

.catalyst-nav__center {
  display: flex;
  gap: 40px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.catalyst-nav__link {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.3s;
}

.catalyst-nav__link:hover {
  color: var(--carbon);
}

.catalyst-nav__cta {
  font-size: 12px;
  font-weight: 400;
  color: var(--carbon);
  text-decoration: none;
  letter-spacing: 0.02em;
  padding: 7px 20px;
  border: 1px solid var(--border-hover);
  border-radius: 24px;
  transition: all 0.3s;
}

.catalyst-nav__cta:hover {
  background: var(--carbon);
  color: var(--bg);
  border-color: var(--carbon);
}

.catalyst-nav__right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.catalyst-nav__hamburger {
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0;
  position: relative;
  z-index: 210;
}

.catalyst-nav__hamburger-line {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--carbon);
  transition:
    transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease;
  transform-origin: center;
}

.catalyst-nav__hamburger.is-open {
  background: rgb(255, 255, 255, 0.05);
  border: 1px solid rgb(255, 255, 255, 0.2);
  border-radius: 50%;
}

.catalyst-nav__hamburger.is-open:hover {
  border-color: rgb(255, 255, 255, 0.4);
}

.catalyst-nav__hamburger.is-open .catalyst-nav__hamburger-line {
  background: rgb(255, 255, 255, 0.6);
}

.catalyst-nav__hamburger.is-open:hover .catalyst-nav__hamburger-line {
  background: #fff;
}

.catalyst-nav__hamburger.is-open .catalyst-nav__hamburger-line:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.catalyst-nav__hamburger.is-open .catalyst-nav__hamburger-line:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

body.curtain-open .catalyst-nav__account-btn,
body.curtain-open .catalyst-nav__center {
  display: none !important;
}

body.menu-open .catalyst-nav__cta-pill {
  display: none !important;
}

.catalyst-nav__account-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--carbon);
  text-decoration: none;
  border-radius: 50%;
  transition: background 0.2s;
}

.catalyst-nav__account-btn:hover {
  background: var(--surface-warm);
}

.catalyst-nav__account-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

.catalyst-nav__link--active {
  color: var(--carbon);
  font-weight: 500;
}

.catalyst-nav__cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--carbon);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  font-family: var(--font);
  text-decoration: none;
  transition: all 0.3s;
}

.catalyst-nav__cta-pill-icon {
  width: 12px;
  height: 12px;
  stroke: currentColor;
  flex-shrink: 0;
}

.catalyst-nav__cta-pill--mobile {
  display: none;
}

.catalyst-nav__cta-pill:hover {
  background: var(--carbon);
  color: var(--bg);
  border-color: var(--carbon);
}

.catalyst-nav__cart-btn {
  position: relative;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
}

.catalyst-nav__cart-btn.is-empty {
  display: none;
}

.catalyst-nav__cart-btn:hover {
  border-color: var(--border-hover);
}

.catalyst-nav__cart-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--carbon);
  fill: none;
  stroke-width: 1.5;
}

.catalyst-nav.catalyst-nav--dark {
  background: rgb(14, 14, 14, 0.96);
  border-bottom-color: rgb(255, 255, 255, 0.06);
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__logo {
  color: #fff;
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__link {
  color: rgb(255, 255, 255, 0.6);
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__link:hover {
  color: #fff;
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__cta-pill {
  color: #fff;
  border-color: rgb(255, 255, 255, 0.2);
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__cta-pill:hover {
  background: #fff;
  color: var(--bg-dark);
  border-color: #fff;
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__account-btn {
  color: #fff;
}

.catalyst-nav.catalyst-nav--dark .catalyst-nav__hamburger-line {
  background: #fff;
}

@media (width <= 1024px) {
  .catalyst-nav {
    padding: 0 24px;
  }

  .catalyst-nav__center {
    gap: 24px;
  }

  .catalyst-nav__hamburger {
    min-width: 44px;
    min-height: 44px;
  }
}

@media (width <= 860px) {
  .catalyst-nav {
    padding: 0 20px;
  }

  .catalyst-nav__cta-pill {
    font-size: 10px;
    padding: 5px 12px;
    white-space: nowrap;
  }
}

@media (width <= 768px) {
  .catalyst-nav {
    padding: 0 20px;
  }

  .catalyst-nav__center {
    display: none;
  }

  .catalyst-nav__right {
    gap: 12px;
    flex: 1;
    margin-left: 16px;
    justify-content: flex-end;
  }

  .catalyst-nav__cta {
    display: none;
  }

  /* Mobile: show GLP-3 pill, hide Science Explained pill */
  .catalyst-nav__cta-pill--desktop {
    display: none;
  }

  .catalyst-nav__cta-pill--mobile {
    display: inline-flex;
    font-size: 11px;
    padding: 6px 14px;
    white-space: nowrap;
    flex: 1;
    text-align: center;
    justify-content: center;
  }
}

@media (width <= 600px) {
  .catalyst-nav {
    padding: 0 16px;
  }

  /* Mobile touch targets — minimum 44px */
  .catalyst-nav__cart-btn {
    width: 40px;
    height: 40px;
  }

  .catalyst-nav__account-btn {
    width: 40px;
    height: 40px;
  }
}

@media (width <= 480px) {
  .catalyst-nav__right {
    gap: 8px;
    margin-left: 12px;
  }

  .catalyst-nav__cta-pill {
    font-size: 10px;
    padding: 5px 12px;
  }
}