/* ==========================================================================
   STICKY SITE HEADER (TOPBAR + NAVBAR)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.topbar {
  background-color: var(--color-primary);
  color: #e2e8f0;
  font-size: 0.96rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 0;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-contact {
  display: flex;
  gap: 26px;
}

.topbar-contact span,
.topbar-contact a,
.topbar-contact-item {
  display: flex;
  align-items: center;
  gap: 9px;
  color: inherit;
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.topbar-contact a:hover {
  color: #ffffff;
}

.topbar-contact i {
  color: var(--color-accent);
  font-size: 1.05rem;
}

.topbar-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #38bdf8;
  font-weight: 600;
  font-size: 0.94rem;
}

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar {
  position: relative;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-card-border);
  transition: var(--transition);
}

.navbar.scrolled {
  background-color: #ffffff;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.site-logo-img {
  height: 66px;
  width: auto;
  display: block;
  object-fit: contain;
  transition: transform var(--transition);
}

.brand-logo:hover .site-logo-img {
  transform: scale(1.02);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  line-height: 1;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

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

.nav-item {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-main);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-item:hover,
.nav-item.active {
  color: var(--color-accent);
}

.nav-item:not(.nav-btn-primary)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width 0.25s ease;
}

.nav-item:not(.nav-btn-primary).active::after {
  width: 100%;
}

.nav-btn-primary {
  background-color: var(--color-primary);
  color: #ffffff !important;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  margin-left: 10px;
}

.nav-btn-primary:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
}

.nav-btn-primary.active::after {
  display: none;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
}