:root {
            --primary-color: #6c5ce7;
            --secondary-color: #a29bfe;
            --accent-color: #fd79a8;
            --dark-color: #2d3436;
            --light-color: #f7f7f7;
            --background-color: #f5f7fa;
            --text-color: #2d3436;
            --card-bg: #ffffff;
            --footer-bg: #ffffff;
            --input-bg: #ffffff;
            --ad-border-color: #6c5ce7;
        }
        
        /* Karanlık mod için ek stiller */
        .dark-mode {
            --background-color: #1a1a1a !important;
            --text-color: #ffffff !important;
            --card-bg: #2d3436 !important;
            --footer-bg: #2d3436 !important;
            --input-bg: #3c4042 !important;
            --ad-border-color: #a29bfe !important;
        }

        /* Body için dark mode sınıfını doğrudan uygula */
        body.dark-mode {
            background-color: var(--background-color) !important;
            color: var(--text-color) !important;
        }

        /* Navbar dark mode düzeltmesi */
        .dark-mode .navbar-dark {
            background-color: #343a40 !important;
        }

        .dark-mode .card {
            background-color: var(--card-bg) !important;
            color: var(--text-color) !important;
        }

        .dark-mode .form-control {
            background-color: var(--input-bg) !important;
            color: var(--text-color) !important;
            border-color: #495057 !important;
        }

        .dark-mode .footer {
            background-color: var(--footer-bg) !important;
            color: var(--text-color) !important;
        }

        /* Modal dark mode düzeltmesi */
        .dark-mode .modal-content {
            background-color: var(--card-bg) !important;
            color: var(--text-color) !important;
        }

        .dark-mode .modal-header {
            border-bottom-color: #495057 !important;
        }

        .dark-mode .modal-footer {
            border-top-color: #495057 !important;
        }

        /* Accordion dark mode düzeltmesi */
        .dark-mode .accordion-button {
            background-color: var(--card-bg) !important;
            color: var(--text-color) !important;
        }

        .dark-mode .accordion-body {
            background-color: var(--card-bg) !important;
            color: var(--text-color) !important;
        }

        /* Alert dark mode düzeltmesi */
        .dark-mode .alert-info {
            background-color: #032830 !important;
            color: #a6e3ff !important;
            border-color: #055160 !important;
        }
        
        body {
            background: var(--background-color);
            color: var(--text-color);
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            transition: all 0.3s ease;
            position: relative;
        }
        
        /* Ana içerik genişliği */
        .main-container {
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* Navigasyon düzeni - her zaman tek sırada */
        .navbar-nav {
            flex-direction: row !important;
            align-items: center;
        }
        
        .nav-item {
            margin-left: 10px;
            white-space: nowrap;
        }
        
        /* Mobil menü butonunu gizle */
        .navbar-toggler {
            display: none !important;
        }
        
        @media (max-width: 1200px) {
            .navbar-nav {
                flex-wrap: nowrap;
                justify-content: flex-end;
            }
            
            .nav-item {
                margin: 0 5px;
            }
            
            .nav-link {
                padding: 0.5rem 0.5rem;
                font-size: 0.9rem;
            }
            
            .btn-contact {
                padding: 0.4rem 0.6rem;
                font-size: 0.9rem;
            }
            .ad-responsive-container {
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
                margin: 20px 0;
            }
            
            .ad-responsive-container .ad-container {
                width: calc(33% - 15px);
                max-width: 300px;
                margin: 0;
            }
            }
        
        @media (max-width: 576px) {
            .navbar-brand {
                font-size: 1rem;
            }
            
            .nav-item {
                font-size: 0.8rem;
                margin: 0 3px;
            }
            
            .nav-item .btn {
                padding: 4px 8px;
                font-size: 0.8rem;
            }

            .ad-column .ad-container {
                width: 100%;
                max-width: 300px;
            }
            
            .ad-responsive-container {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 15px;
            }

            .ad-responsive-container .ad-container {
                width: calc(70% - 15px);
                max-width: 300px;
                margin: 0;
            }
        }
        
        /* Koyu mod metin renkleri */
        .dark-mode .card-body h4,
        .dark-mode .history-section h5,
        .dark-mode .download-item span,
        .dark-mode #videoUrl::placeholder {
            color: #fff !important;
        }
        
        .dark-mode .text-muted {
            color: #a0a0a0 !important;
        }
        
        .ad-column {
            position: fixed;
            display: flex;
            flex-direction: column;
            gap: 20px;
            z-index: 1000;
        }
        
        .ad-left {
            left: 20px;
            top: 80px; /* Navbar'dan sonra başlat */
        }
        
        .ad-right {
            right: 20px;
            top: 80px; /* Navbar'dan sonra başlat */
        }
        
        .ad-container {
            width: 180px;
            padding: 10px;
            border: 2px dashed var(--ad-border-color);
            border-radius: 10px;
            background-color: var(--card-bg);
            text-align: center;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            margin-bottom: 10px;
        }
        
        .ad-image {
            max-width: 100%;
            height: auto;
            border-radius: 5px;
            margin-bottom: 8px;
        }
        
        .ad-text {
            font-size: 14px;
            color: var(--text-color);
            margin: 8px 0;
            font-weight: 500;
            word-break: break-word;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
        }
        
        
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
        }
        
        .main-card {
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            border: none;
            overflow: hidden;
            background-color: var(--card-bg);
            transition: all 0.3s ease;
        }
        
        .card-header {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            text-align: center;
            padding: 20px;
            border-bottom: none;
        }
        
        .card-body {
            padding: 25px;
        }
        
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 12px;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(108, 92, 231, 0.4);
        }
        
        .btn-contact {
            background: linear-gradient(to right, var(--accent-color), #e84393);
            border: none;
            color: white;
            padding: 8px 15px;
        }
        
        .form-control {
            padding: 12px 15px;
            border: 2px solid #eef2f7;
            border-radius: 8px;
            transition: all 0.3s;
            background-color: var(--input-bg);
            color: var(--text-color);
        }
        
        .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(162, 155, 254, 0.25);
        }
        
        .progress {
            height: 10px;
            border-radius: 5px;
            margin: 15px 0;
        }
        
        #progressBar {
            width: 0%;
        }
         
        .h4 {
             color: var(--text-color);
         }
         
        .download-item {
            background-color: var(--card-bg);
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 15px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }
        
        .download-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .platform-icon {
            font-size: 24px;
            margin-right: 10px;
        }
        
        .youtube-icon { color: #FF0000; }
        .instagram-icon { color: #E1306C; }
        .tiktok-icon { color: #000000; }
        .general-icon { color: var(--primary-color); }
        
        .feature-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .history-section {
            max-height: 300px;
            overflow-y: auto;
        }
        
        .footer {
            background-color: var(--footer-bg);
            padding: 20px;
            text-align: center;
            margin-top: 30px;
            border-top: 1px solid #eee;
            transition: all 0.3s ease;
        }
        
        .modal-content {
            background-color: var(--card-bg);
            color: var(--text-color);
        }
        
        .privacy-badge {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1000;
        }
        
        .language-selector {
            cursor: pointer;
            position: relative;
        }
        
        .language-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background-color: var(--card-bg);
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            padding: 10px;
            min-width: 150px;
            z-index: 1000;
            display: none;
        }
        
        .language-dropdown.show {
            display: block;
        }
        
        .language-option {
            padding: 8px 12px;
            cursor: pointer;
            border-radius: 5px;
            transition: background-color 0.2s;
            color: var(--text-color);
        }
        
        .language-option:hover {
            background-color: rgba(108, 92, 231, 0.1);
        }
        
        /* Yapıştır butonu stilleri */
        .paste-btn {
            border-top-right-radius: 0;
            border-bottom-right-radius: 0;
            border-right: 1px solid #ddd;
        }
        
        .url-input {
            border-top-left-radius: 0;
            border-bottom-left-radius: 0;
        }
        
        /* Başarı mesajı stilleri */
        .success-message {
            text-align: center;
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        
        /* Akordiyon Stilleri */
        .accordion-item {
            background-color: var(--card-bg);
            border: 1px solid rgba(0,0,0,0.05);
            color: var(--text-color);
        }

        .accordion-button {
            background-color: var(--card-bg);
            color: var(--text-color);
            font-weight: 600;
        }

        .accordion-button:not(.collapsed) {
            background: linear-gradient(to right, rgba(108, 92, 231, 0.1), rgba(162, 155, 254, 0.1));
            color: var(--primary-color);
        }
        
        .dark-mode .accordion-button:not(.collapsed) {
             color: var(--secondary-color);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 0.25rem rgba(162, 155, 254, 0.25);
            border-color: transparent;
        }

        .accordion-body {
            color: var(--text-color);
        }