/* ============================================
   GIZEE Header Component
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
  height: 64px;
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo */
.header-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 24px;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 1px;
}

.header-logo:hover {
  color: var(--color-primary-dark);
}

/* Desktop Nav */
.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--color-primary);
}

/* Language Switcher */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
}

.lang-switch a {
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.lang-switch a:hover {
  color: var(--color-primary);
}

.lang-switch a.active {
  color: var(--color-primary);
  font-weight: 700;
}

.lang-switch .separator {
  color: var(--color-border);
  font-weight: 400;
}

/* Hamburger Button */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu Overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-white);
  z-index: calc(var(--z-header) - 1);
  padding: 16px 20px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

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

.mobile-menu a {
  display: flex;
  align-items: center;
  height: 48px;
  font-size: 16px;
  color: var(--color-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  padding-left: 4px;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  padding-left: 12px;
}

.mobile-menu .lang-switch-mobile {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 12px;
}

.mobile-menu .lang-switch-mobile a {
  border: none;
  height: auto;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-warm);
  font-size: 14px;
}

.mobile-menu .lang-switch-mobile a.active {
  background: var(--color-primary);
  color: #FFFFFF;
  border-left: none;
  padding-left: 16px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .site-header {
    height: 56px;
  }

  .header-inner {
    height: 56px;
  }

  .header-nav {
    display: none;
  }

  .lang-switch {
    display: none;
  }

  .hamburger-btn {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }
}