/* ==== Header / Navigation ==== */
.site-header {
  background: #fff;
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.1;
}
.brand .logo-img {
  height: 44px;
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
}
.brand-text .brand-name { font-size: 1.05rem; letter-spacing: 0.5px; }
.brand-text .brand-sub  { font-size: 0.72rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.3px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
}
.nav-links a {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary-light); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .btn { color: #fff; }
.nav-cta .btn:hover { color: #fff; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--primary);
  cursor: pointer;
}

@media (max-width: 900px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-light);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    display: none;
    box-shadow: 0 6px 12px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .nav-cta .btn { padding: 10px 18px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
  .brand-text .brand-name { font-size: 0.9rem; }
  .brand-text .brand-sub { font-size: 0.65rem; }
  .brand .logo-img { height: 38px; }
}