/* ==========================================================================
   Site header — top info bar + main nav + nav dropdowns + mobile menu
   ========================================================================== */

.site-header {
  position: relative;
  z-index: 50;
  font-family: var(--font-sans);
}

/* --- Top info bar --- */
.topbar {
  background: var(--navy-900);
  color: var(--text-light-blue);
  height: var(--header-topbar-h);
}

.topbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  gap: 16px;
}

.topbar__address {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-light-blue);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.topbar__address:hover {
  color: var(--white);
}

.topbar__dot {
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  background: var(--blue-accent);
  border-radius: 50%;
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 26px;
  flex-shrink: 0;
}

.topbar__hours {
  white-space: nowrap;
}

.topbar__phone {
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.11em;
  white-space: nowrap;
}
.topbar__phone:hover {
  color: var(--blue-accent);
}

/* --- Main nav --- */
.mainnav {
  position: relative;
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  height: var(--header-nav-h);
}

.mainnav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.mainnav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.mainnav__logo img {
  height: 52px;
  width: auto;
}

.mainnav__nav ul {
  height: 100%;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mainnav__nav li {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 15px;
}

/* Single row: the caret sits inline beside the label and the active state is
   a bottom border that every item reserves, so all labels share one baseline
   whether or not they have a dropdown. (Previously the caret and the active
   underline both used ::after, so they could never coexist.) */
.mainnav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  font-size: 12px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-navy);
  text-decoration: none;
  white-space: nowrap;
}
.mainnav__link:hover {
  color: var(--text-navy);
}

.mainnav__link.has-caret::after {
  content: "";
  flex-shrink: 0;
  width: 0;
  height: 0;
  border-left: 3.5px solid transparent;
  border-right: 3.5px solid transparent;
  border-top: 4px solid var(--border-light-4);
}

.mainnav__link.is-active {
  border-bottom-color: var(--blue-accent);
}

.mainnav__cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.mainnav__cta .btn {
  padding: 13px 20px;
}
.mainnav__cta .btn--fill-accent {
  padding: 14px 24px;
}

/* --- Nav dropdowns (About, Dental Services, Patient Info) --- */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: var(--white);
  border-bottom: 3px solid var(--blue-accent);
  box-shadow: 0 24px 40px -18px rgba(10, 29, 44, 0.28);
  padding: 10px 0;
  z-index: 60;
  text-align: left;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.is-open .dropdown {
  display: block;
}

.dropdown a {
  display: block;
  padding: 12px 22px;
  font-size: 13px;
  line-height: 1.35;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-body);
  text-decoration: none;
  white-space: nowrap;
}
.dropdown a:hover {
  background: var(--cream);
  color: var(--blue-accent);
}

/* --- Mobile menu toggle (hidden on desktop) --- */
.mainnav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  padding: 0;
  flex-shrink: 0;
  cursor: pointer;
}
.mainnav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.mainnav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mainnav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.mainnav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile menu panel (hidden on desktop) --- */
.mobile-menu {
  display: none;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
  .topbar__hours {
    display: none;
  }

  .mainnav__nav,
  .mainnav__cta {
    display: none;
  }

  .mainnav__toggle {
    display: flex;
  }

  .mainnav__logo img {
    height: 42px;
  }

  .mainnav {
    height: 72px;
  }

  .mobile-menu {
    display: block;
    position: fixed;
    inset: 0;
    top: calc(var(--header-topbar-h) + 72px);
    background: var(--white);
    z-index: 70;
    overflow-y: auto;
    padding: 8px var(--gutter) 32px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }

  .mobile-menu.is-open {
    transform: translateX(0);
  }

  .mobile-menu nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .mobile-menu nav > ul > li {
    border-bottom: 1px solid var(--border-light);
  }

  .mobile-menu nav > ul > li > a,
  .mobile-menu__row-link {
    display: block;
    padding: 18px 0;
    font-size: 15px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-navy);
    text-decoration: none;
  }

  .mobile-menu__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .mobile-menu__row-link {
    flex: 1;
    padding-right: 0;
  }

  .mobile-menu__chevron-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: none;
    border: 0;
    cursor: pointer;
  }

  .mobile-menu__chevron {
    width: 8px;
    height: 8px;
    border-right: 1.5px solid var(--text-navy);
    border-bottom: 1.5px solid var(--text-navy);
    transform: rotate(45deg);
    transition: transform 0.2s ease;
  }

  .mobile-menu__chevron-btn[aria-expanded="true"] .mobile-menu__chevron {
    transform: rotate(-135deg);
  }

  .mobile-menu__submenu[hidden] {
    display: none;
  }

  .mobile-menu__submenu:not([hidden]) {
    padding: 0 0 14px 14px !important;
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .mobile-menu__submenu li {
    border-bottom: 0 !important;
  }

  .mobile-menu__submenu a {
    display: block;
    padding: 10px 0 !important;
    font-size: 13.5px !important;
    text-transform: none !important;
    letter-spacing: 0 !important;
    color: var(--text-body) !important;
  }

  .mobile-menu__cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
  }

  .mobile-menu__cta .btn {
    width: 100%;
  }

  .mobile-menu__phone {
    text-align: center;
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--blue-accent);
    text-decoration: none;
    padding-top: 4px;
  }
}

@media (max-width: 560px) {
  .topbar__inner {
    font-size: 9.5px;
    gap: 10px;
  }

  .topbar__right {
    gap: 14px;
  }
}