/* ============================================
   OM STEPRISER - Header & Navigation
   ============================================ */

/* ---- Site Header ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  transition: background var(--transition-slow), height var(--transition-slow), box-shadow var(--transition-slow);
}

/* Transparent state (over hero) */
.site-header--transparent {
  background: transparent;
}

/* Scrolled state */
.site-header--scrolled {
  background: rgba(26, 18, 9, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: var(--header-height-scrolled);
  box-shadow: 0 4px 32px rgba(0,0,0,0.25);
}

/* Non-hero pages */
.site-header--solid {
  background: var(--color-dark);
  height: var(--header-height-scrolled);
  box-shadow: 0 4px 32px rgba(0,0,0,0.25);
}

/* ---- Header Inner ---- */
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-8);
  max-width: var(--container-max);
  margin: 0 auto;
  gap: var(--space-8);
}

/* ---- Logo ---- */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.logo__image {
  height: 52px;
  width: auto;
  transition: height var(--transition-slow);
}

.site-header--scrolled .logo__image,
.site-header--solid .logo__image {
  height: 44px;
}

.logo__text {
  display: flex;
  flex-direction: column;
}

.logo__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-white);
  letter-spacing: 0.05em;
  line-height: 1.1;
}

.logo__name span {
  color: var(--color-accent);
}

.logo__tagline {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: var(--fw-medium);
}

/* ---- Navigation ---- */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background var(--transition-base);
  white-space: nowrap;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.nav__link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
}

.nav__item:hover .nav__link svg {
  transform: rotate(180deg);
}

/* ---- Dropdown Menu ---- */
.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: var(--color-dark);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  padding: var(--space-2) 0;
  z-index: var(--z-dropdown);
}

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

.nav__dropdown-item a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.75);
  transition: all var(--transition-fast);
}

.nav__dropdown-item a:hover {
  color: var(--color-white);
  background: rgba(196,137,42,0.12);
  padding-left: var(--space-6);
}

.nav__dropdown-item a::before {
  content: '›';
  color: var(--color-accent);
  font-size: var(--text-lg);
  line-height: 1;
}

.nav__dropdown-divider {
  height: 1px;
  background: var(--color-border-dark);
  margin: var(--space-2) 0;
}

.nav__dropdown-label {
  padding: var(--space-2) var(--space-5) var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---- Header CTA ---- */
.header__cta {
  flex-shrink: 0;
}

/* ---- Mobile Menu Toggle ---- */
.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-base);
  background: none;
  border: none;
  padding: 0;
}

.header__toggle:hover {
  background: rgba(255,255,255,0.08);
}

.header__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.header__toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.header__toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Menu ---- */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-dark);
  z-index: calc(var(--z-sticky) - 1);
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-height) + var(--space-4)) var(--space-6) var(--space-8);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateX(100%);
  transition: all var(--transition-slow);
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.mobile-nav__list {
  flex: 1;
}

.mobile-nav__item {
  border-bottom: 1px solid var(--color-border-dark);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-weight: var(--fw-medium);
  color: var(--color-white);
}

.mobile-nav__link svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

.mobile-nav__sub {
  padding-bottom: var(--space-4);
}

.mobile-nav__sub-link {
  display: block;
  padding: var(--space-2) 0 var(--space-2) var(--space-5);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.65);
  border-left: 2px solid var(--color-accent);
  margin: var(--space-2) 0;
}

.mobile-nav__sub-link:hover {
  color: var(--color-white);
}

.mobile-nav__sub-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  padding: var(--space-2) 0 var(--space-1) var(--space-5);
}

.mobile-menu__footer {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu__contact {
  color: rgba(255,255,255,0.5);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-menu__contact a {
  color: rgba(255,255,255,0.75);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .header__nav {
    display: none;
  }

  .header__cta {
    display: none;
  }

  .header__toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .header__inner {
    padding: 0 var(--space-4);
  }
}