* { margin: 0; padding: 0; box-sizing: border-box; }
        

html {
    background: linear-gradient(135deg, #EC4899 0%, #DB2777 100%);
    background-attachment: fixed;
}

body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #EC4899 0%, #DB2777 100%);
            min-height: 100vh; display: flex; flex-direction: column; color: white;
        }
        .header {
            background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
             border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }
        .nav { display: flex; justify-content: space-between; align-items: center;
            padding: 0.5rem 2rem;
            gap: 1rem;
            flex-wrap: wrap; }
        .logo { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: white;
            flex-shrink: 0; }

        .logo:hover {
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
            transform: scale(1.05);
        }

        .logo svg {
            transition: all 0.3s ease;
        }

        .logo:hover svg {
            filter: drop-shadow(0 0 15px rgba(102, 126, 234, 0.6)) drop-shadow(0 0 25px rgba(118, 75, 162, 0.4));
            transform: translateY(-2px);
        }
        .nav-menu {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }

        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            opacity: 0.9;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
            padding: 0.5rem 0.8rem;
            border-radius: 20px;
            white-space: nowrap;
            font-size: 0.95rem;
        }

        .nav-link:hover {
            opacity: 1;
            transform: translateY(-2px);
            background: rgba(255, 255, 255, 0.1);
            text-shadow: 0 1px 5px rgba(0, 0, 0, 0.5);
        }
        /* Mobile Menu Toggle */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
            transition: all 0.3s ease;
        }

        .mobile-menu-toggle:hover {
            opacity: 0.8;
        }

        .container {
            flex: 1; display: flex; flex-direction: column; justify-content: center;
            align-items: center; padding: 2rem;
        }
        .splitter-container {
            background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(10px);
            border-radius: 30px; padding: 3rem; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.2); max-width: 1000px; width: 100%;
        }
        .tool-title { font-size: 2.5rem; margin-bottom: 0.5rem; font-weight: 700; text-align: center; }
        .tool-subtitle { font-size: 1.1rem; opacity: 0.9; margin-bottom: 3rem; text-align: center; }
        .upload-section {
            background: rgba(0, 0, 0, 0.1); border-radius: 20px; padding: 2rem; margin-bottom: 2rem;
        }
        .upload-area {
            border: 3px dashed rgba(255, 255, 255, 0.3); border-radius: 15px;
            padding: 3rem; text-align: center; transition: all 0.3s ease;
            cursor: pointer; position: relative;
        }
        .upload-area:hover, .upload-area.dragover {
            border-color: #FF9800; background: rgba(255, 152, 0, 0.1);
        }
        .upload-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.7; }
        .upload-text { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .upload-hint { font-size: 0.9rem; opacity: 0.7; }
        .file-input { display: none;     color: white;
        }
        .browse-btn {
            background: linear-gradient(135deg, #FF9800, #f57c00); color: white; border: none;
            padding: 0.8rem 1.5rem; border-radius: 25px; font-size: 0.9rem; font-weight: 600;
            cursor: pointer; transition: all 0.3s ease; margin-top: 1rem;
        }
        .browse-btn:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2); }
        .pdf-info {
            background: rgba(255, 193, 7, 0.2); border: 2px solid #FFC107;
            border-radius: 15px; padding: 1.5rem; margin-bottom: 2rem; display: none;
        }
        .pdf-info-title { font-size: 1rem; margin-bottom: 1rem; font-weight: 600; }
        .pdf-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 1rem; }
        .pdf-stat { text-align: center; }
        .pdf-stat-value { font-size: 1.2rem; font-weight: 600; color: #FFC107; font-family: 'Courier New', monospace; }
        .pdf-stat-label { font-size: 0.8rem; opacity: 0.8; margin-top: 0.3rem;     color: white;
        }
        .split-options {
            background: rgba(0, 0, 0, 0.1); border-radius: 20px; padding: 2rem; margin-bottom: 2rem;
            display: none;
        }
        .options-title { font-size: 1.2rem; margin-bottom: 1.5rem; text-align: center; opacity: 0.9; }
        .split-methods {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;
        }
        .method-btn {
            background: rgba(255, 255, 255, 0.2); color: white; border: none;
            padding: 1rem; border-radius: 15px; font-size: 0.9rem; cursor: pointer;
            transition: all 0.3s ease; text-align: center;
        }
        .method-btn:hover { background: rgba(255, 255, 255, 0.3); transform: translateY(-2px); }
        .method-btn.active { background: #FF9800; }
        .method-title { font-weight: 600; margin-bottom: 0.3rem; }
        .method-desc { font-size: 0.8rem; opacity: 0.7; }
        .split-settings {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;
        }
        .setting-group { display: flex; flex-direction: column; }
        .setting-label { font-size: 0.9rem; margin-bottom: 0.5rem; opacity: 0.8;     color: white;
        }
        .setting-input {
            background: rgba(0, 0, 0, 0.2); border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 10px; color: white; font-size: 0.9rem; padding: 0.8rem;
            color: white;
        }
        .setting-input:focus { outline: none; border-color: rgba(255, 255, 255, 0.6); }
        .setting-input::placeholder { color: rgba(255, 255, 255, 0.5); }
        .split-btn {
            background: linear-gradient(135deg, #2196F3, #1976D2); color: white; border: none;
            padding: 1rem 2rem; border-radius: 50px; font-size: 1rem; font-weight: 600;
            cursor: pointer; transition: all 0.3s ease; display: block; margin: 0 auto;
        }
        .split-btn:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2); }
        .progress-section {
            background: rgba(0, 0, 0, 0.1); border-radius: 20px; padding: 2rem; margin-bottom: 2rem;
            display: none;
        }
        .progress-title { font-size: 1.2rem; margin-bottom: 1rem; text-align: center; opacity: 0.9; }
        .progress-bar {
            width: 100%; height: 12px; background: rgba(255, 255, 255, 0.2);
            border-radius: 6px; overflow: hidden; margin-bottom: 1rem;
        }
        .progress-fill {
            height: 100%; background: linear-gradient(90deg, #FF9800, #FFB74D);
            transition: width 0.3s ease; border-radius: 6px; width: 0%;
        }
        .progress-text { text-align: center; font-size: 0.9rem; opacity: 0.8; }
        .results-section {
            background: rgba(0, 0, 0, 0.1); border-radius: 20px; padding: 2rem; margin-bottom: 2rem;
            display: none;
        }
        .results-title { font-size: 1.2rem; margin-bottom: 1.5rem; text-align: center; opacity: 0.9; }
        .results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
        .result-item {
            background: rgba(255, 255, 255, 0.1); border-radius: 15px; padding: 1rem; text-align: center;
        }
        .result-icon { font-size: 2rem; color: #FF9800; margin-bottom: 0.5rem; }
        .result-name { font-weight: 600; margin-bottom: 0.3rem; }
        .result-info { font-size: 0.8rem; opacity: 0.7; margin-bottom: 1rem; }
        .download-single {
            background: rgba(76, 175, 80, 0.8); color: white; border: none;
            padding: 0.5rem 1rem; border-radius: 15px; font-size: 0.8rem; cursor: pointer;
            transition: all 0.3s ease; width: 100%;
        }
        .download-single:hover { background: rgba(76, 175, 80, 1); }
        .download-all-section {
            text-align: center; margin-top: 2rem;
        }
        .download-all-btn {
            background: linear-gradient(135deg, #00FF88, #45a049); color: white; border: none;
            padding: 1rem 2rem; border-radius: 50px; font-size: 1rem; font-weight: 600;
            cursor: pointer; transition: all 0.3s ease; display: inline-flex; align-items: center; gap: 0.5rem;
        }
        .download-all-btn:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2); }
        @media (max-width: 768px) {
                        .header {
                
            }

            .nav {
                gap: 0.8rem;
            }

            .logo {
                font-size: 1.2rem;
            }

            .logo svg {
                width: 180px !important;
                height: 41px !important;
            }
            .mobile-menu-toggle {
                display: block;
            }
            
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(0, 0, 0, 0.95);
                backdrop-filter: blur(15px);
                flex-direction: column;
                padding: 1rem;
                gap: 0;
                flex-wrap: nowrap;
                z-index: 1000;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
                margin-top: 1rem;
                border-radius: 10px;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-link {
                padding: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                text-align: center;
                font-size: 1rem;
                white-space: normal;
                border-radius: 0;
            }
            
            .nav-link:last-child {
                border-bottom: none;
            }


            .back-btn {
                padding: 0.4rem 0.8rem;
                font-size: 0.9rem;
            }

.splitter-container { padding: 2rem 1rem; margin: 1rem; }
            .tool-title { font-size: 2rem; }
            .split-methods { grid-template-columns: 1fr; }
            .split-settings { grid-template-columns: 1fr; }
            .results-grid { grid-template-columns: 1fr; }
        }

        /* Footer CSS */
        .footer {
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 3rem 0 1rem;
            margin-top: 2rem;
        }

        .footer .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: block;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h3,
        .footer-section h4 {
            margin-bottom: 1rem;
            color: #fff;
        }

        .footer-section p {
            opacity: 0.8;
            line-height: 1.6;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 0.5rem;
        }

        .footer-section ul li a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section ul li a:hover {
            color: white;
        }

        .social-links { display: flex; gap: 1rem; justify-content: center; }

        .social-links a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.2rem;
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            color: white;
            transform: translateY(-2px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            opacity: 0.8;
        }

        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
    
        /* Scroll to Top Button */
        .scroll-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
            transition: all 0.3s ease;
            z-index: 9999;
        }

        .scroll-to-top:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
        }

        .scroll-to-top.show {
            display: flex;
        }

    
        /* Tool Navigation Buttons */
        .tool-nav-btn {
            position: fixed;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 1rem;
            border-radius: 15px;
            text-decoration: none;
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
            z-index: 999;
            max-width: 120px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .tool-nav-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-50%) scale(1.05);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        .tool-nav-btn.prev {
            left: 20px;
        }

        .tool-nav-btn.next {
            right: 20px;
        }

        .tool-nav-btn i {
            font-size: 1.5rem;
        }

        .tool-nav-label {
            font-size: 0.75rem;
            opacity: 0.9;
            font-weight: 500;
        }

        .tool-nav-name {
            font-size: 0.7rem;
            opacity: 0.7;
            line-height: 1.2;
        }

        @media (max-width: 768px) {
            .tool-nav-btn {
                padding: 0.6rem;
                max-width: 80px;
                font-size: 0.85rem;
                top: auto;
                bottom: 80px;
                transform: none;
            }

            .tool-nav-btn:hover {
                transform: scale(1.05);
            }

            .tool-nav-btn.prev {
                left: 10px;
            }

            .tool-nav-btn.next {
                right: 10px;
            }

            .tool-nav-btn i {
                font-size: 1.2rem;
            }

            .tool-nav-label {
                font-size: 0.65rem;
            }

            .tool-nav-name {
                font-size: 0.6rem;
                display: none;
            }
        }

        /* Article Section CSS */
        .article-section {
            max-width: 1000px;
            margin: 3rem auto;
            padding: 0 2rem;
        }

        .article-container {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 3rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .article-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .article-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #fff;
        }

        .article-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            color: rgba(255, 255, 255, 0.9);
        }

        .article-content {
            color: white;
            line-height: 1.8;
        }

        .article-content h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.95);
        }

        .highlight-box {
            background: rgba(255, 255, 255, 0.15);
            border-left: 4px solid #fff;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 10px;
        }

        .highlight-box h4 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #fff;
        }

        .faq-section {
            margin-top: 3rem;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        .faq-question {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .faq-answer {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.95);
            line-height: 1.6;
        }

        @media (max-width: 480px) {
            .logo svg {
                width: 160px !important;
                height: 37px !important;
            }
        }

        /* Enhanced Footer Hover Animations */
        .footer-section ul li a {
            transition: all 0.3s ease;
            display: inline-block;
            position: relative;
        }

        .footer-section ul li a:hover {
            color: white;
            transform: translateX(5px);
            text-shadow: 0 0 10px rgba(102, 126, 234, 0.6);
        }

        .footer-section ul li a::before {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transition: width 0.3s ease;
        }

        .footer-section ul li a:hover::before {
            width: 100%;
        }

        .social-links a {
            font-size: 1.5rem;
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            color: white;
            transform: translateY(-3px) scale(1.15);
            filter: drop-shadow(0 5px 10px rgba(102, 126, 234, 0.6));
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
            padding-bottom: 2px;
        }

        .footer-bottom a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transition: width 0.3s ease;
        }

        .footer-bottom a:hover {
            color: white;
            text-shadow: 0 0 10px rgba(102, 126, 234, 0.8);
            transform: translateY(-2px);
        }

        .footer-bottom a:hover::after {
            width: 100%;
        }