/* H2 Pure Life — Shared site navigation
 * Sticky 76px bar, 52px logo, 5 top-level items (two with dropdowns), mobile drawer.
 */

.nav {
  position: sticky;
  top: 0;
  margin: 0;
  z-index: 100;
  background: var(--white);
  border: 0;
  box-shadow: none;
  transition: box-shadow var(--tx) var(--ease);
}
/* Belt-and-braces: extend the nav's white background 2px above its top edge so any
   subpixel gap from sticky-positioning rounding cannot expose the html background. */
.nav::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -2px;
  height: 2px;
  background: var(--white);
  pointer-events: none;
}
.nav.is-scrolled {
  box-shadow: 0 1px 0 var(--line), 0 4px 12px rgba(10, 31, 31, 0.04);
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: clamp(24px, 2vw, 32px);
  height: var(--nav-h);
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
/* Logo wrapper doubles as a self-contained dark badge: the typographic
   lockup sits inside #0A1F1F dark teal with rounded corners, padded so
   the logo breathes inside it. Not a structural cell — there's white
   nav space above and below, the badge is a graphic element wrapping
   the lockup. */
.nav__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity var(--tx) var(--ease);
  background: #0A1F1F;
  border-radius: 8px;
  padding: 6px 12px;
}
.nav__logo:hover { opacity: 0.82; }
.nav__logo svg {
  height: 56px;
  width: auto;
  display: block;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 22px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  padding: 8px 4px;
  text-decoration: none;
  position: relative;
  transition: color var(--tx) var(--ease);
}
.nav__link:hover { color: var(--teal-deep); }
.nav__link[aria-current="page"] { color: var(--teal-deep); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 2px;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
}

/* Push nav-links (and any subsequent right-side siblings) to the right edge */
.nav__links { margin-left: auto; }

/* Phone link — sibling-after .nav__links, calmer counterpart to nav items */
.nav__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 4px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  flex-shrink: 0;
  transition: color var(--tx) var(--ease);
}
.nav__phone:hover,
.nav__phone:focus-visible { color: var(--teal-deep); }
.nav__phone-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Dropdown items */
.nav__item--has-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}
.nav__link--parent {
  background: transparent;
  border: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  padding: 8px 4px;
  position: relative;
  transition: color var(--tx) var(--ease);
}
.nav__link--parent:hover { color: var(--teal-deep); }
.nav__chevron {
  width: 10px;
  height: 7px;
  transition: transform var(--tx) var(--ease);
}
.nav__item--has-dropdown.is-open .nav__chevron { transform: rotate(180deg); }
.nav__item.is-active-group .nav__link--parent { color: var(--teal-deep); }
.nav__item.is-active-group .nav__link--parent::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 2px;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
}
.nav__dropdown {
  position: absolute;
  top: calc(100% - 4px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 184px;
  padding: 10px 0;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(10, 31, 31, 0.10), 0 0 0 1px var(--line);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 0s linear 180ms;
  z-index: 110;
}
.nav__item--has-dropdown.is-open .nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 0s linear 0s;
}
.nav__dropdown-link {
  display: block;
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--tx) var(--ease), background-color var(--tx) var(--ease);
}
.nav__dropdown-link:hover,
.nav__dropdown-link:focus { color: var(--teal); outline: none; }

.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.nav__toggle:hover { background: rgba(0,0,0,0.04); }
.nav__burger,
.nav__burger::before,
.nav__burger::after {
  display: block;
  position: absolute;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--tx) var(--ease), top var(--tx) var(--ease), opacity var(--tx) var(--ease);
}
.nav__burger {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.nav__burger::before,
.nav__burger::after {
  content: "";
  left: 0;
}
.nav__burger::before { top: -7px; }
.nav__burger::after { top: 7px; }
.nav__toggle[aria-expanded="true"] .nav__burger { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__burger::before { top: 0; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__burger::after { top: 0; transform: rotate(-45deg); }

/* Tablet — start tightening */
@media (max-width: 1080px) {
  .nav__link,
  .nav__link--parent { font-size: 0.86rem; }
  .nav__phone { font-size: 0.86rem; }
  .nav__inner { gap: 12px; }
  .nav__logo svg { height: 52px; }
}

/* Mobile drawer */
@media (max-width: 900px) {
  .nav__inner { height: var(--nav-h-mobile); }
  .nav__logo svg { height: 44px; }
  .nav__logo { padding: 5px 10px; border-radius: 6px; }
  .nav__toggle { display: inline-flex; align-items: center; justify-content: center; order: 3; }
  .nav__phone {
    order: 2;
    margin-left: auto;
    padding: 14px;
  }
  .nav__phone-number {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
  }
  .nav__links {
    position: fixed;
    inset: var(--nav-h-mobile) 0 0 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 24px var(--gutter) 40px;
    gap: 0;
    overflow-y: auto;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--tx) var(--ease), transform var(--tx) var(--ease);
    border-top: 1px solid var(--line);
  }
  .nav__links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav__link {
    padding: 16px 4px;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }
  .nav__link[aria-current="page"]::after { display: none; }

  /* Mobile dropdown — accordion */
  .nav__item--has-dropdown {
    display: block;
    border-bottom: 1px solid var(--line);
  }
  .nav__link--parent {
    width: 100%;
    justify-content: space-between;
    padding: 16px 4px;
    font-size: 1.05rem;
    text-align: left;
  }
  .nav__item.is-active-group .nav__link--parent::after { display: none; }
  .nav__dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    background: transparent;
    border-radius: 0;
    padding: 0;
    min-width: 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: 0;
    overflow: hidden;
    transition: max-height 220ms var(--ease);
  }
  .nav__item--has-dropdown.is-open .nav__dropdown {
    max-height: 320px;
    transform: none;
  }
  .nav__dropdown-link {
    padding: 14px 4px 14px 20px;
    font-size: 1rem;
    border-top: 1px solid var(--line);
  }
  body.nav-open { overflow: hidden; }
}