#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-700);
  transition: background .3s ease, box-shadow .3s ease;
}

#site-header.scrolled {
  background: #fff;
  box-shadow: 0 2px 18px rgba(0,52,120,.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* ── Logo ── */
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
}

.logo-badge {
  background: #fff;
  border-radius: var(--r-sm);
  padding: 7px 16px;
  flex-shrink: 0;
  transition: background .3s;
}

#site-header.scrolled .logo-badge {
  background: var(--c-700);
}

.logo-text {
  font-family: var(--font-c);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: .18em;
  color: var(--c-700);
  display: block;
  height: 28px;
  width: auto;
  object-fit: contain;
  transition: filter .3s;
}

#site-header.scrolled .logo-text {
  filter: brightness(0) invert(1);
}

.logo-sub {
  display: none;
  flex-direction: column;
}

.logo-sub-top {
  color: rgba(255,255,255,.75);
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: color .3s;
}

.logo-sub-btm {
  color: var(--c-300);
  font-size: .65rem;
  transition: color .3s;
}

#site-header.scrolled .logo-sub-top {
  color: var(--c-800);
}

#site-header.scrolled .logo-sub-btm {
  color: var(--c-500);
}

/* ── Desktop Nav ── */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-btn {
  color: rgba(255,255,255,.82);
  font-size: .79rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 7px 11px;
  border-radius: var(--r-sm);
  position: relative;
  transition: color .2s, background .2s;
}

.nav-btn:hover {
  color: #fff;
  background: rgba(255,255,255,.1);
}

.nav-btn.active {
  color: #fff;
}

.nav-btn.active::after {
  content: '';
  position: absolute;
  bottom: 1px;
  left: 11px;
  right: 11px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
}

#site-header.scrolled .nav-btn {
  color: var(--c-700);
}

#site-header.scrolled .nav-btn:hover {
  background: var(--c-50);
  color: var(--c-900);
}

#site-header.scrolled .nav-btn.active {
  color: var(--c-800);
}

#site-header.scrolled .nav-btn.active::after {
  background: var(--c-700);
}

.nav-btn-client {
  margin-left: 6px;
  background: rgba(255,255,255,.14);
  border: 1.5px solid rgba(255,255,255,.38);
  color: #fff !important;
  padding: 7px 14px;
  border-radius: var(--r-md);
}

.nav-btn-client::after {
  display: none !important;
}

.nav-btn-client:hover {
  background: rgba(255,255,255,.24) !important;
  border-color: rgba(255,255,255,.6) !important;
}

#site-header.scrolled .nav-btn-client {
  background: var(--c-700) !important;
  border-color: var(--c-700) !important;
  color: #fff !important;
}

#site-header.scrolled .nav-btn-client::after {
  display: none !important;
}

/* ── Controls ── */
.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-bar {
  display: flex;
  background: rgba(0,0,0,.22);
  border-radius: var(--r-sm);
  padding: 3px;
  transition: background .3s;
}

#site-header.scrolled .lang-bar {
  background: var(--c-50);
}

.lang-btn {
  font-size: .7rem;
  font-weight: 600;
  color: var(--c-400);
  padding: 3px 7px;
  border-radius: 4px;
  transition: color .15s, background .15s;
}

.lang-btn:hover {
  color: #fff;
}

.lang-btn.active {
  background: rgba(255,255,255,.16);
  color: #fff;
}

#site-header.scrolled .lang-btn {
  color: var(--c-400);
}

#site-header.scrolled .lang-btn:hover {
  color: var(--c-800);
}

#site-header.scrolled .lang-btn.active {
  background: var(--c-100);
  color: var(--c-800);
}

.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  color: #fff;
  padding: 6px;
  border-radius: var(--r-sm);
  transition: background .2s, color .2s;
}

.hamburger:hover {
  background: rgba(255,255,255,.1);
}

#site-header.scrolled .hamburger {
  color: var(--c-700);
}

#site-header.scrolled .hamburger:hover {
  background: var(--c-50);
}

/* ── Mobile Menu ── */
.mobile-menu {
  overflow: hidden;
  max-height: 0;
  transition: max-height .3s ease;
  border-top: 1px solid rgba(255,255,255,.1);
}

.mobile-menu.open {
  max-height: 360px;
}

#site-header.scrolled .mobile-menu {
  border-top-color: var(--c-100);
}

.mobile-menu-inner {
  padding: 10px 0 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mob-nav-btn {
  display: block;
  text-align: left;
  color: rgba(255,255,255,.9);
  font-size: .84rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 9px 6px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: color .15s;
}

.mob-nav-btn:last-child {
  border-bottom: none;
}

.mob-nav-btn:hover {
  color: #fff;
}

#site-header.scrolled .mob-nav-btn {
  color: var(--c-700);
  border-bottom-color: var(--c-100);
}

#site-header.scrolled .mob-nav-btn:hover {
  color: var(--c-900);
}

/* ── Responsive ── */
@media (min-width: 540px) {
  .logo-sub {
    display: flex;
  }
}

@media (max-width: 840px) {
  .nav-desktop {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}