/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.95), rgba(26, 35, 50, 0.95));
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
  }
  
  header.scrolled {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.98), rgba(26, 35, 50, 0.98));
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.3);
  }
  
  .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
  }
  
  .logo {
    font-size: 1.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, #2196f3, #64b5f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    position: relative;
  }
  
  .logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #2196f3, #64b5f6);
    transition: width 0.3s ease;
  }
  
  .logo:hover::after {
    width: 100%;
  }
  
  /* Navigation - DÜZELTME: nav yerine .nav-menu kullan */
  .nav-menu ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 32px;
    margin: 0;
    padding: 0;
  }
  
  .nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 8px 0;
    transition: all 0.3s ease;
  }
  
  .nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #2196f3, #64b5f6);
    transition: all 0.3s ease;
    transform: translateX(-50%);
  }
  
  .nav-menu a:hover {
    color: #64b5f6;
  }
  
  .nav-menu a:hover::before {
    width: 100%;
  }
  
  /* Language Switcher */
  .language-switcher {
    display: flex;
    align-items: center;
  }
  
  .lang-dropdown {
    background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    color: #ffffff;
    padding: 5px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
  }
  
  .lang-dropdown option {
    background: #1a1a1a;
    color: #ffffff;
    font-size: 0.9rem;
    padding: 6px;
  }
  
  .lang-dropdown:hover, .lang-dropdown:focus {
    background: rgba(33, 150, 243, 0.25);
    border-color: #2196f3;
    box-shadow: 0 0 10px rgba(33, 150, 243, 0.4);
  }
  
  /* Hamburger Menu - DÜZELTME: .bar class'ı ekle */
  .hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: 8px;
    z-index: 1001;
  }
  
  .hamburger span,
  .hamburger .bar {
    width: 25px;
    height: 3px;
    background: linear-gradient(135deg, #2196f3, #64b5f6);
    border-radius: 2px;
    transition: all 0.3s ease;
  }
  
  .hamburger.active span:nth-child(1),
  .hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }
  
  .hamburger.active span:nth-child(2),
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3),
  .hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
  }
  
  /* Mobile Navigation - DÜZELTME: nav yerine .nav-menu kullan */
  @media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
  
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, rgba(15, 20, 25, 0.98), rgba(26, 35, 50, 0.98));
        backdrop-filter: blur(20px);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
    }
  
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
  
    .nav-menu ul {
        flex-direction: column;
        padding: 20px;
        gap: 20px;
    }
  
    .nav-menu li,
    .nav-item {
        width: 100%;
        text-align: center;
    }
  
    .nav-menu a,
    .nav-link {
        display: block;
        padding: 12px 16px;
        border-radius: 8px;
        background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
        border: 1px solid rgba(255,255,255,0.1);
        color: rgba(255, 255, 255, 0.9);
        text-decoration: none;
        font-size: 1.1rem;
    }
  
    .nav-menu a:hover,
    .nav-link:hover {
        background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
        border-color: rgba(100, 181, 246, 0.3);
        color: #64b5f6;
        transform: translateX(5px);
    }
  
    .language-switcher {
        margin-top: 10px;
        justify-content: center;
    }
  
    /* Body scroll lock when menu is open */
    body.menu-open {
        overflow: hidden;
    }
  }