.header {
            background: #fff;
            border-bottom: 1px solid #e9ecef;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0px;
            display: flex;
            flex-direction: row;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 120px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: #212529;
            flex-shrink: 0;
        }
        
        .search-nav-row {
            display: flex;
            align-items: center;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            flex-grow: 1;
            justify-content: flex-end;
        }
        
        .search-container {
            max-width: 500px;
            width: 500px;
            position: relative;
        }
        
        /* WhatsApp Button Styles */
        .whatsapp-btn {
            background-color: white !important;
            color: #25D366 !important;
            border: 1px solid #e0e0e0 !important;
            transition: all 0.3s ease;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 !important;
        }
        
        .whatsapp-btn:hover {
            background-color: #f5f5f5 !important;
            color: #128C7E !important;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
        }
        
        .whatsapp-btn i {
            margin: 0;
            font-size: 1.43em; /* %30 büyük */
        }
        
        .nav-buttons {
            display: flex;
            gap: 15px;
            align-items: center;
        }
        
        .logo img {
            width: 105.6px; /* %20 büyük: 88px * 1.2 = 105.6px */
            height: 105.6px; /* %20 büyük: 88px * 1.2 = 105.6px */
            object-fit: contain;
        }
        
        .logo-text {
            font-size: 1.8rem; /* %20 büyük: 1.5rem * 1.2 = 1.8rem */
            font-weight: 700;
            color: #ff6b35;
        }
        
        .search-box {
            width: 100%;
            padding: 12px 50px 12px 20px;
            border: 2px solid #e9ecef;
            border-radius: 25px;
            font-size: 1rem;
            outline: none;
            transition: all 0.3s ease;
        }
        
        .search-box:focus {
            border-color: #ff6b35;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
        }
        
        .search-btn {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            background: #ff6b35;
            color: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        
        .search-btn:hover {
            background: #e55a2b;
            transform: translateY(-50%) scale(1.05);
        }
        
        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .nav-btn {
            padding: 10px 20px;
            border: 2px solid #e9ecef;
            background: white;
            color: #495057;
            text-decoration: none;
            border-radius: 25px;
            font-weight: 500;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }
        
        .nav-btn:hover {
            border-color: #ff6b35;
            color: #ff6b35;
        }
        
        .nav-btn.primary {
            background: #ff6b35;
            color: white;
            border-color: #ff6b35;
        }
        
        .nav-btn.primary:hover {
            background: #e55a2b;
            border-color: #e55a2b;
            color: white;
        }
        
        /* User Dropdown Menu */
        .user-menu {
            position: relative;
            display: inline-block;
        }
        
        .user-button {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 15px;
            background: #f8f9fa;
            border: 2px solid #e9ecef;
            border-radius: 25px;
            color: #495057;
            text-decoration: none;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }
        
        .user-button:hover {
            border-color: #ff6b35;
            color: #ff6b35;
            background: #fff;
        }
        
        .user-avatar {
            width: 24px;
            height: 24px;
            background: #ff6b35;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            font-size: 0.8rem;
        }
        
        .dropdown-menu {
            position: absolute;
            top: 100%;
            right: 0;
            background: white;
            border: 1px solid #e9ecef;
            border-radius: 12px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.15);
            min-width: 200px;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            margin-top: 5px;
        }
        
        .dropdown-menu.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .dropdown-header {
            padding: 15px 20px;
            border-bottom: 1px solid #e9ecef;
            background: #f8f9fa;
            border-radius: 12px 12px 0 0;
        }
        
        .dropdown-header .user-name {
            font-weight: 600;
            color: #212529;
            font-size: 0.9rem;
        }
        
        .dropdown-header .user-email {
            font-size: 0.8rem;
            color: #6c757d;
            margin-top: 2px;
        }
        
        .dropdown-item {
            display: block;
            padding: 12px 20px;
            color: #495057;
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            cursor: pointer;
            font-size: 0.9rem;
        }
        
        .dropdown-item:hover {
            background: #f8f9fa;
            color: #ff6b35;
        }
        
        .dropdown-item i {
            width: 16px;
            margin-right: 10px;
        }
        
        .dropdown-divider {
            height: 1px;
            background: #e9ecef;
            margin: 5px 0;
        }