/* ============================================
   Header & Navigation
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: var(--z-header);
  transition: all var(--transition-base);
  background-color: transparent;
}

.header--scrolled {
  background-color: var(--color-bg-white);
  height: var(--header-height-scrolled);
  box-shadow: 0 1px 0 var(--color-border-light);
}

[data-theme="dark"] .header--scrolled {
  background-color: var(--color-bg-secondary);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* === Logo === */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: var(--z-max);
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: var(--fw-bold);
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.header--scrolled .header__logo-text,
.header__logo-text {
  color: var(--color-text-primary);
}

.header__logo-sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.55rem;
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--ls-caps);
  color: var(--color-champagne-gold);
  text-align: center;
}

/* === Navigation === */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

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

.nav__link {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-champagne-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

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

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

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

.nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background-color: var(--color-surface-card);
  border-radius: 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(10px);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border-light);
}

.nav__item--dropdown:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.nav__dropdown-link:hover,
.nav__dropdown-link--active {
  background-color: var(--color-surface-hover);
  color: var(--color-champagne-gold);
  padding-left: calc(var(--space-lg) + 4px);
}

.nav__dropdown-link--active {
  font-weight: var(--fw-semibold);
}

/* === Header Actions (Theme + Lang + CTA) === */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Theme Toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-circle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  background: transparent;
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--color-champagne-gold);
  background-color: rgba(212, 175, 55, 0.08);
}

.theme-toggle .fa-moon { display: none; }
.theme-toggle .fa-sun  { display: inline; }

[data-theme="dark"] .theme-toggle .fa-moon { display: inline; }
[data-theme="dark"] .theme-toggle .fa-sun  { display: none; }

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--color-border-light);
  border-radius: 0;
  overflow: hidden;
  font-size: var(--fs-tiny);
}

.lang-toggle__btn {
  padding: 4px 10px;
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  cursor: pointer;
  background: transparent;
  border: none;
  font-size: var(--fs-tiny);
}

.lang-toggle__btn--active {
  background-color: var(--color-champagne-gold);
  color: var(--color-text-light);
}

/* Header CTA */
.header__cta {
  padding: 0.5rem 1.4rem;
  font-size: var(--fs-small);
}

/* === Mobile Menu Toggle === */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: var(--z-max);
  padding: var(--space-xs);
  background: transparent;
  border: none;
}

.menu-toggle__bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.menu-toggle--open .menu-toggle__bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle--open .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

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

/* === Mobile Navigation Drawer === */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: linear-gradient(180deg, var(--color-bg-white) 0%, var(--color-bg-warm) 100%);
  z-index: calc(var(--z-header) - 1);
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  transition: right var(--transition-base);
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  overflow-y: auto;
}

[data-theme="dark"] .mobile-nav {
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.mobile-nav--open {
  right: 0;
}

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay);
  z-index: calc(var(--z-header) - 2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-nav__overlay--visible {
  opacity: 1;
  visibility: visible;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-md) var(--space-sm);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  color: var(--color-champagne-gold);
  background-color: rgba(212, 175, 55, 0.05);
  padding-left: var(--space-md);
}

.mobile-nav__sub {
  padding-left: var(--space-lg);
}

.mobile-nav__sub-link {
  display: block;
  padding: var(--space-sm) var(--space-sm);
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.mobile-nav__sub-link:hover,
.mobile-nav__sub-link--active {
  color: var(--color-champagne-gold);
}

.mobile-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.mobile-nav__cta {
  display: block;
  text-align: center;
  margin-top: var(--space-lg);
}