/* ============================================
   HEADER.CSS - NDIStress Header
   White bg, 80px height, logo left, nav center,
   phone + appointment button right
   ============================================ */

/* ----------------------------------------
   Header Container
   ---------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-white);
  transition: all var(--ease);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 30px;
}

/* ----------------------------------------
   Logo
   ---------------------------------------- */
.header__logo {
  flex-shrink: 0;
}

.header__logo img {
  width: 100%;
  max-width: 130px;
  height: auto;
  transition: opacity var(--ease);
}

.header__logo:hover img {
  opacity: 0.7;
}

/* ----------------------------------------
   Navigation - Desktop
   Uses Bricolage Grotesque per design
   ---------------------------------------- */
.header__nav {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  font-family: var(--font-nav);
  font-size: var(--nav-size);
  font-weight: var(--nav-weight);
  line-height: var(--nav-lh);
  color: var(--color-dark);
  padding: 5px 0;
  position: relative;
  transition: color var(--ease-fast);
}

/* Underline hover effect */
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-cream);
  transition: width var(--ease);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* ----------------------------------------
   Dropdown Menu
   ---------------------------------------- */
.nav__item {
  position: relative;
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.11);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--ease);
  z-index: 100;
}

.nav__item:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: 14px 20px;
  font-family: var(--font-nav);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-dark);
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.15);
  transition: all var(--ease-fast);
}

.nav__dropdown-link:last-child {
  border-bottom: none;
}

.nav__dropdown-link:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* ----------------------------------------
   Header Actions (phone + appointment btn)
   ---------------------------------------- */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Member login/avatar icon */
.header__member-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: all var(--ease);
  overflow: hidden;
  flex-shrink: 0;
}

.header__member-icon:hover {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(91, 45, 142, 0.3);
}

.header__member-icon svg {
  width: 20px;
  height: 20px;
}

.header__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-primary);
}

/* Phone link with cream circle icon + text */
.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: var(--nav-size);
  font-weight: 600;
  color: var(--color-dark);
  transition: color var(--ease-fast);
}

.header__phone:hover {
  color: var(--color-primary);
}

/* Search/Phone icon button (legacy) */
.header__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-cream);
  transition: all var(--ease);
  cursor: pointer;
  border: none;
}

.header__icon-btn svg {
  width: 18px;
  height: 18px;
  fill: var(--color-primary);
  transition: fill var(--ease);
}

.header__icon-btn:hover {
  background-color: var(--color-primary);
}

.header__icon-btn:hover svg {
  fill: var(--color-white);
}

/* ----------------------------------------
   Mobile Menu Toggle
   ---------------------------------------- */
.header__menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-light);
  border: none;
  cursor: pointer;
  transition: background-color var(--ease);
}

.header__menu-toggle:hover {
  background-color: var(--color-primary);
}

.header__menu-toggle:hover .hamburger__line {
  background-color: var(--color-white);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 20px;
}

.hamburger__line {
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: all var(--ease);
}

/* Hamburger open state - X shape */
.header__menu-toggle.is-open .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-toggle.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle.is-open .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ----------------------------------------
   Sticky Header - show/hide on scroll
   ---------------------------------------- */
.site-header {
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              background-color 0.3s ease,
              box-shadow 0.3s ease;
}

.site-header--sticky {
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

/* Hidden state - slides up out of view */
.site-header--hidden {
  transform: translateY(-100%);
  box-shadow: none;
}

/* ----------------------------------------
   Mobile Nav Overlay
   ---------------------------------------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-h));
  background-color: var(--color-white);
  z-index: 999;
  padding: 30px;
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-nav);
  font-size: 16px;
  font-weight: var(--nav-weight);
  color: var(--color-dark);
  padding: 16px 0;
  border-bottom: 0.5px solid var(--color-border);
  transition: color var(--ease-fast);
}

.mobile-nav__link:hover {
  color: var(--color-primary);
}