.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1040;
    background: #ffffffc2;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .site-header.header-hidden {
    transform: translateY(-100%);
  }

  .header-nav {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
  }

  .header-logo img {
    width: 120px;
  }

  .header-center {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
  }

  .header-center a {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #0C003D;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s;
  }

  .header-center a:hover {
    background: #f3f4f6;
  }

  .header-center .lgs-badge {
    background: #5c1a58;
    color: #fff;
    border-radius: 9999px;
    padding: 0.5rem 1rem;
  }

  .header-center .lgs-badge:hover {
    opacity: 0.9;
    background: #fff;
    color: #5c1a58;
  }

  .header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
  }

  .header-right a {
    text-decoration: none;
  }

  .header-right .login-link {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: #0C003D;
  }

  .header-right .buy-btn {
    background: #5c1a58;
    color: #fff;
    border-radius: 9999px;
    padding: 0.5rem 1rem;
    font-weight: 500;
  }

  .site-header .navbar-toggler {
    border: none;
    padding: 0.5rem;
  }

  .site-header .navbar-toggler:focus {
    box-shadow: none;
  }

  .site-header .navbar-collapse {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #f8f7fa;
    border-radius: 0 0 1.5rem 1.5rem;
    padding: 0;
    z-index: 1050;
  }

  .site-header .navbar-collapse.collapsing,
  .site-header .navbar-collapse.show {
    padding: 1rem 1.5rem 1.5rem;
  }

  .site-header .navbar-collapse .nav-link {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #0C003D;
    text-decoration: none;
  }

  .site-header .navbar-collapse .lgs-badge {
    background: #C2574A;
    color: #fff;
    border-radius: 9999px;
    display: inline-block;
    width: fit-content;
    padding: 0.5rem 1rem;
  }

  .site-header .navbar-collapse .mobile-divider {
    height: 1px;
    background: rgba(12, 0, 61, 0.08);
    margin: 0.5rem 0;
  }

  .site-header .navbar-collapse .mobile-buy-btn {
    display: block;
    text-align: center;
    background: #5c1a58;
    color: #fff;
    text-decoration: none;
    border-radius: 9999px;
    padding: 0.75rem 1rem;
    font-weight: 600;
    margin-top: 0.25rem;
  }

  /* Desktop ≥1024px — tam yatay nav. Tam yatay nav'ın rahat sığması için ~960px+
     gerekiyor; bu yüzden hamburger menü 768px yerine 1024px'te devreye girer
     (768–1024 arası linkler sıkışıp alt satıra kayıyordu, logo dikeyde kayıyordu). */
  @media (min-width: 1024px) {

    .site-header .navbar-collapse,
    .site-header .navbar-toggler {
      display: none !important;
    }

    /* index.css/site.css'te header'ın bayat kopyaları var (index.css'teki
       @media max-width:1400 logoya order:2 verip 1024–1400 arası ortaya itiyordu).
       Daha yüksek specificity (.site-header .x) ile masaüstünde doğru DOM sırasını
       (logo → menü → sağ grup) ve yerleşimi kesin olarak geri al. */
    .site-header .header-logo {
      order: 0;
      flex: 0 0 auto;
      margin-left: 0;
    }

    .site-header .header-center {
      order: 0;
      display: flex;
    }

    .site-header .header-right {
      order: 0;
    }
  }

  /* Tablet + mobil <1024px — hamburger menü düzeni */
  @media (max-width: 1023px) {
    .site-header .header-center {
      display: none;
    }

    .site-header .header-nav {
      padding: 1rem 1.25rem;
    }

    /* Sıra: logo (sol) → Satın Al → hamburger (sağ). Logo flex:1 ile sola yaslanır,
       diğerlerini sağa iter. */
    .site-header .header-logo {
      order: 1;
      flex: 1;
      display: flex;
    }

    .site-header .header-logo img {
      width: 110px;
    }

    .site-header .header-right {
      order: 2;
      gap: 0;
    }

    .site-header .header-right .login-link {
      display: none;
    }

    .site-header .header-right .buy-btn {
      font-size: 0.875rem;
      padding: 0.5rem 1rem;
    }

    .site-header .navbar-toggler {
      display: inline-flex !important;
      order: 3;
      margin-left: 0.5rem;
    }
  }