.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid #e9ecef;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.main-navbar {
  min-height: 82px;
  padding-top: 16px;
  padding-bottom: 16px;
  transition: min-height 0.25s ease, padding 0.25s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
  border-bottom-color: transparent;
}

.logo {
  height: 40px;
  width: auto;
  object-fit: contain;
  transition: height 0.25s ease;
}

.site-header.scrolled .main-navbar {
  min-height: 60px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.site-header.scrolled .logo {
  height: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: #111;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: #ff5500 !important;
}