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

        :root {
            --primary-color: #6366f1;
            --secondary-color: #8b5cf6;
            --accent-color: #f59e0b;
            --dark-bg: #0f172a;
            --darker-bg: #020617;
            --card-bg: rgba(255, 255, 255, 0.05);
            --text-primary: #f8fafc;
            --text-secondary: #cbd5e1;
            --text-muted: #64748b;
            --border-color: rgba(255, 255, 255, 0.1);
            --glow: 0 0 20px rgba(99, 102, 241, 0.3);
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--darker-bg);
            overflow-x: hidden;
        }

        /* Animated Background */
        .background-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
        }

        .background-animation::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
            animation: pulse 4s ease-in-out infinite alternate;
        }

        @keyframes pulse {
            0% { opacity: 0.5; }
            100% { opacity: 1; }
        }

        .container {
            display: grid;
            grid-template-areas: 
                "header header"
                "sidebar main"
                "footer footer";
            grid-template-columns: 320px 1fr;
            grid-template-rows: auto 1fr auto;
            min-height: 100vh;
            max-width: 1600px;
            margin: 0 auto;
        }

        /* Header */
        .header {
            grid-area: header;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 1.5rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            position: relative;
        }

        .logo::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }

        .nav-desktop {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }

        .nav-desktop a {
            color: var(--text-secondary);
            text-decoration: none;
            padding: 0.75rem 1.5rem;
            border-radius: 12px;
            transition: all 0.3s ease;
            position: relative;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid transparent;
        }

        .nav-desktop a:hover {
            color: var(--text-primary);
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            transform: translateY(-2px);
            box-shadow: var(--glow);
        }

        .mobile-menu-btn {
            display: none;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.75rem;
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .mobile-menu-btn:hover {
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(30px);
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-menu.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu-content {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 2rem;
            margin: 2rem;
            border-radius: 24px;
            transform: translateY(-50px);
            transition: transform 0.3s ease;
        }

        .mobile-menu.active .mobile-menu-content {
            transform: translateY(0);
        }

        .mobile-menu-close {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 2rem;
        }

        .mobile-menu-close button {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.3);
            color: #ef4444;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .mobile-menu-close button:hover {
            background: rgba(239, 68, 68, 0.2);
            transform: scale(1.1);
        }

        .mobile-nav {
            list-style: none;
        }

        .mobile-nav li {
            margin-bottom: 0.5rem;
        }

        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 1.1rem;
            display: block;
            padding: 1rem 1.5rem;
            border-radius: 12px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .mobile-nav a:hover {
            color: var(--text-primary);
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            transform: translateX(10px);
            box-shadow: var(--glow);
        }

        /* Sidebar */
        .sidebar {
            grid-area: sidebar;
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(20px);
            border-right: 1px solid var(--border-color);
            padding: 2rem 1.5rem;
            overflow-y: auto;
        }

        .sidebar h3 {
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .sidebar h3::before {
            content: '';
            width: 4px;
            height: 20px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }

        .sidebar ul {
            list-style: none;
            margin-bottom: 2rem;
        }

        .sidebar li {
            margin-bottom: 0.5rem;
        }

        .sidebar a {
            color: var(--text-secondary);
            text-decoration: none;
            display: flex;
            align-items: center;
            padding: 1rem;
            border-radius: 12px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            font-weight: 500;
        }

        .sidebar a:hover {
            color: var(--text-primary);
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            transform: translateX(8px);
            box-shadow: var(--glow);
        }

        .sidebar a::before {
            content: '▶';
            margin-right: 0.75rem;
            font-size: 0.8rem;
            opacity: 0;
            transform: translateX(-10px);
            transition: all 0.3s ease;
        }

        .sidebar a:hover::before {
            opacity: 1;
            transform: translateX(0);
        }

        .widget {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 16px;
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }

        .widget:hover {
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow);
            transform: translateY(-2px);
        }

        .widget h4 {
            color: var(--text-primary);
            margin-bottom: 1rem;
            font-size: 1.1rem;
            font-weight: 600;
        }

        .widget p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Main Content */
        .main {
            grid-area: main;
            padding: 2rem;
            overflow-y: auto;
        }

        .hero {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1), rgba(245, 158, 11, 0.1));
            border: 1px solid rgba(99, 102, 241, 0.2);
            padding: 4rem 2rem;
            border-radius: 24px;
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.02) 50%, transparent 70%);
            animation: shimmer 3s ease-in-out infinite;
        }

        @keyframes shimmer {
            0%, 100% { transform: translateX(-100%); }
            50% { transform: translateX(100%); }
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 2rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .btn-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1rem 2rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
        }

        .btn-secondary {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 20px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
        }

        .card:hover {
            transform: translateY(-8px);
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow), 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .card-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .card h3 {
            color: var(--text-primary);
            margin-bottom: 1rem;
            font-size: 1.4rem;
            font-weight: 700;
        }

        .card p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .card-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
        }

        .card-link:hover {
            gap: 0.75rem;
            color: var(--secondary-color);
        }

        /* Stats Section */
        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 16px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow);
            transform: translateY(-5px);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
        }

        .stat-label {
            color: var(--text-secondary);
            font-weight: 600;
            margin-top: 0.5rem;
        }

        /* Footer */
        .footer {
            grid-area: footer;
            background: var(--darker-bg);
            border-top: 1px solid var(--border-color);
            padding: 3rem 2rem 2rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }

        .footer-section h4 {
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
            font-weight: 700;
        }

        .footer-section p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .footer-section a {
            color: #ffffff;
            text-decoration: none;
            transition: all 0.3s ease;
            display: block;
            padding: 0.5rem 0;
        }

        .footer-section a:hover {
            color: var(--primary-color);
            transform: translateX(5px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 2rem;
            text-align: center;
            color: var(--text-muted);
        }

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

        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
            color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: var(--glow);
        }

        /* Converter Section Styling */
        .alert {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 1rem;
            border-radius: 12px;
            margin-bottom: 1.5rem;
            color: var(--text-secondary);
            text-align: center;
        }

        .alert a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
        }

        .alert a:hover {
            color: var(--secondary-color);
        }

        .text-sections {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .input-section, .output-section {
            display: flex;
            flex-direction: column;
        }

        .label {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        textarea {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem;
            color: var(--text-primary);
            font-size: 1rem;
            resize: vertical;
            min-height: 150px;
            transition: all 0.3s ease;
        }

        textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: var(--glow);
        }

        textarea[readonly] {
            background: rgba(255, 255, 255, 0.02);
            cursor: default;
        }

        .button-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .convert-btn, .clear-btn, .copy-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .convert-btn {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
        }

        .convert-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
        }

        .clear-btn, .copy-btn {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }

        .clear-btn:hover, .copy-btn:hover {
            background: rgba(99, 102, 241, 0.1);
            border-color: var(--primary-color);
            box-shadow: var(--glow);
        }

        .dictionary-section {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 20px;
            margin-top: 2rem;
            transition: all 0.3s ease;
        }

        .dictionary-section:hover {
            transform: translateY(-5px);
            border-color: rgba(99, 102, 241, 0.3);
            box-shadow: var(--glow);
        }

        .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .table-responsive {
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            color: var(--text-secondary);
        }

        th, td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background: rgba(255, 255, 255, 0.02);
            font-weight: 600;
            color: var(--text-primary);
        }

        tr:hover {
            background: rgba(99, 102, 241, 0.05);
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 280px 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                grid-template-areas: 
                    "header"
                    "main"
                    "footer";
                grid-template-columns: 1fr;
            }

            .nav-desktop {
                display: none;
            }

            .mobile-menu-btn {
                display: block;
            }

            .mobile-menu {
                display: block;
            }

            .sidebar {
                display: none;
            }

            .main {
                padding: 1rem;
            }

            .hero {
                padding: 3rem 1.5rem;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .content-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .btn-group {
                flex-direction: column;
                align-items: center;
            }

            .stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .text-sections {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            textarea {
                min-height: 120px;
            }
        }

        @media (max-width: 480px) {
            .header {
                padding: 1rem;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .card {
                padding: 1.5rem;
            }

            .stats {
                grid-template-columns: 1fr;
            }

            .social-links {
                flex-wrap: wrap;
            }

            .button-group {
                flex-direction: column;
                align-items: stretch;
            }

            .convert-btn, .clear-btn, .copy-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* Loading Animation */
        .loading-bar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
            transform: translateX(-100%);
            animation: loading 2s ease-in-out;
            z-index: 9999;
        }

        @keyframes loading {
            0% { transform: translateX(-100%); }
            50% { transform: translateX(0%); }
            100% { transform: translateX(100%); }
        }

        /* Scroll Indicator */
        .scroll-indicator {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: rgba(255, 255, 255, 0.1);
            z-index: 9998;
        }

        .scroll-progress {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
            width: 0%;
            transition: width 0.1s ease;
        }