.site-header {
  border-bottom: 1px solid #ddd;
  background: #fff;
}

.header-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.logo {
  text-decoration: none;
  font-weight: bold;
  color: #111;
}

.header-nav,
.header-auth {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-nav a,
.header-auth a {
  text-decoration: none;
  color: #1d4ed8;
}

.header-auth button {
  border: 1px solid #ccc;
  background: #f7f7f7;
  padding: 4px 8px;
  cursor: pointer;
}

.hidden {
  display: none;
}