.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  background: var(--bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
  color: var(--text);
}


.nav-link:hover {
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent);
}

.nav-link--active {
  background: var(--accent);
  color: white;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 14px;
}

.theme-toggle:hover {
  border-color: var(--accent);
}

@media (max-width: 600px) {
  .nav {
    width: 100%;
    gap: 12px;
    padding-inline: 12px;
  }

  .nav-link {
    padding-inline: 12px;
  }
}