:root {
            --primary-color: #00d1b2;
            --secondary-color: #667eea;
            --accent-color: #764ba2;
            --dark-bg: #0a0a0a;
            --card-bg: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: #a8a8a8;
            --gradient-primary: linear-gradient(135deg, #00d1b2 0%, #667eea 50%, #764ba2 100%);
            --gradient-card: linear-gradient(145deg, #1a1a1a 0%, #2a2a2a 100%);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--dark-bg);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            min-height: 100vh;
        }

        /* Custom Navbar Styling - Matching Index */
        .custom-navbar {
            background: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(20px);
            padding: 1rem 0;
            border-bottom: 1px solid rgba(0, 209, 178, 0.2);
            position: fixed;
            width: 100%;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .custom-navbar.scrolled {
            background: rgba(10, 10, 10, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .navbar-brand {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary) !important;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .navbar-brand:hover {
            transform: scale(1.05);
        }

        .navbar-brand span {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .navbar-nav .nav-link {
            color: var(--text-primary) !important;
            margin: 0 1rem;
            font-weight: 500;
            position: relative;
            transition: all 0.3s ease;
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--gradient-primary);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 100%;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary-color) !important;
            transform: translateY(-2px);
        }

        /* Loader styles */
        .loader-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: var(--dark-bg);
            z-index: 9999;
            transition: opacity 0.5s ease;
        }

        .loader {
            width: 60px;
            height: 60px;
            border: 3px solid rgba(0, 209, 178, 0.3);
            border-top: 3px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hidden {
            opacity: 0;
            visibility: hidden;
        }

        /* Main Container */
        .main-container {
            padding-top: 120px;
            padding-bottom: 50px;
        }

        /* Enhanced Card Design */
        .tts-card {
            background: var(--gradient-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .tts-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .tts-card:hover::before {
            transform: scaleX(1);
        }

        .tts-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
        }

        /* Speech Icon */
        .speech-icon {
            width: 120px;
            height: 120px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 2rem;
            box-shadow: 0 10px 30px rgba(0, 209, 178, 0.3);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% {
                box-shadow: 0 10px 30px rgba(0, 209, 178, 0.3);
            }
            50% {
                box-shadow: 0 10px 40px rgba(0, 209, 178, 0.5);
            }
            100% {
                box-shadow: 0 10px 30px rgba(0, 209, 178, 0.3);
            }
        }

        .speech-icon i {
            font-size: 3rem;
            color: white;
        }

        /* File Upload Area */
        .file-upload-area {
            border: 2px dashed var(--primary-color);
            border-radius: 15px;
            padding: 2rem;
            text-align: center;
            background: rgba(0, 209, 178, 0.05);
            transition: all 0.3s ease;
            cursor: pointer;
            margin-bottom: 1.5rem;
        }

        .file-upload-area:hover {
            background: rgba(0, 209, 178, 0.1);
            border-color: var(--secondary-color);
        }

        .file-upload-area.dragover {
            background: rgba(0, 209, 178, 0.15);
            border-color: var(--secondary-color);
            transform: scale(1.02);
        }

        .file-content {
            white-space: pre-wrap;
            background: rgba(30, 30, 30, 0.8);
            padding: 1.5rem;
            border: 1px solid var(--primary-color);
            border-radius: 10px;
            color: var(--text-primary);
            max-height: 200px;
            overflow-y: auto;
            margin-bottom: 1rem;
            font-family: 'Courier New', monospace;
        }

        /* Enhanced Form Controls - Fixed for light text */
        .form-control-enhanced {
            background: rgba(30, 30, 30, 0.8);
            color: var(--text-primary) !important;
            border: 2px solid #333;
            border-radius: 10px;
            padding: 1rem;
            transition: all 0.3s ease;
            font-size: 1.1rem;
        }

        .form-control-enhanced:focus {
            box-shadow: 0 0 20px rgba(0, 209, 178, 0.3);
            border-color: var(--primary-color);
            background: rgba(30, 30, 30, 0.95);
            color: var(--text-primary) !important;
        }

        .form-control-enhanced::placeholder {
            color: var(--text-secondary) !important;
        }

        /* Select dropdown styling */
        .form-control-enhanced option {
            background: rgba(30, 30, 30, 0.95);
            color: var(--text-primary);
        }

        .form-control-enhanced optgroup {
            background: rgba(20, 20, 20, 0.95);
            color: var(--primary-color);
            font-weight: bold;
        }

        /* Form labels */
        .form-label {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        /* Control Panel - Mobile Optimized */
        .control-panel {
            background: rgba(20, 20, 20, 0.8);
            border-radius: 15px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #333;
            /* Prevent accidental interactions on mobile */
            touch-action: manipulation;
        }

        .control-row {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
            gap: 1rem;
            /* Add more spacing on mobile */
            padding: 0.5rem 0;
        }

        .control-label {
            min-width: 80px;
            font-weight: 600;
            color: var(--primary-color);
            font-size: 1rem;
        }

        .control-value {
            background: var(--primary-color);
            color: #121212;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-weight: bold;
            min-width: 60px;
            text-align: center;
            font-size: 0.9rem;
        }

        /* Enhanced Range Sliders - Mobile Optimized */
        .range-slider {
            flex: 1;
            height: 12px; /* Increased height for better touch targets */
            border-radius: 6px;
            background: #333;
            outline: none;
            -webkit-appearance: none;
            transition: all 0.2s ease;
            /* Prevent page scroll when dragging on mobile */
            touch-action: pan-x;
        }

        .range-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 24px; /* Larger thumb for better touch interaction */
            height: 24px;
            border-radius: 50%;
            background: var(--gradient-primary);
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(0, 209, 178, 0.3);
            transition: all 0.3s ease;
            /* Ensure thumb is above track */
            position: relative;
            z-index: 2;
        }

        .range-slider::-webkit-slider-thumb:hover {
            transform: scale(1.2);
            box-shadow: 0 4px 15px rgba(0, 209, 178, 0.5);
        }

        .range-slider::-webkit-slider-thumb:active {
            transform: scale(1.3);
            box-shadow: 0 6px 20px rgba(0, 209, 178, 0.7);
        }

        .range-slider::-moz-range-thumb {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--gradient-primary);
            cursor: pointer;
            border: none;
            box-shadow: 0 2px 10px rgba(0, 209, 178, 0.3);
        }

        /* Mobile-specific slider improvements */
        @media (max-width: 768px) {
            .control-panel {
                padding: 1rem;
                margin: 1rem 0;
            }
            
            .control-row {
                flex-direction: column;
                align-items: stretch;
                gap: 0.8rem;
                padding: 1rem 0;
                border-bottom: 1px solid #333;
            }
            
            .control-row:last-child {
                border-bottom: none;
            }
            
            .control-label {
                min-width: auto;
                text-align: center;
                font-size: 1.1rem;
            }
            
            .range-slider {
                height: 16px; /* Even larger on mobile */
                margin: 0.5rem 0;
            }
            
            .range-slider::-webkit-slider-thumb {
                width: 28px;
                height: 28px;
            }
            
            .control-value {
                align-self: center;
                font-size: 1rem;
                padding: 0.5rem 1.2rem;
            }
        }

        /* Button Styles */
        .btn-enhanced {
            background: var(--gradient-primary);
            color: white;
            border: none;
            border-radius: 25px;
            padding: 0.8rem 2rem;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 209, 178, 0.3);
            position: relative;
            overflow: hidden;
            /* Better touch targets */
            min-height: 48px;
            touch-action: manipulation;
        }

        .btn-enhanced:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 209, 178, 0.4);
            color: white;
        }

        .btn-enhanced:active {
            transform: translateY(0);
        }

        .btn-enhanced::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }

        .btn-enhanced:hover::before {
            left: 100%;
        }

        /* Control Buttons */
        .control-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin: 1.5rem 0;
        }

        .control-btn {
            background: rgba(30, 30, 30, 0.8);
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
            border-radius: 50px;
            padding: 0.8rem 1.5rem;
            font-weight: bold;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            /* Better touch targets */
            min-height: 48px;
            touch-action: manipulation;
        }

        .control-btn:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 209, 178, 0.3);
        }

        .control-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }

        .control-btn.active {
            background: var(--primary-color);
            color: white;
        }

        /* Mobile button improvements */
        @media (max-width: 768px) {
            .control-buttons {
                gap: 0.8rem;
            }
            
            .control-btn {
                padding: 1rem 1.2rem;
                font-size: 0.9rem;
                min-height: 52px;
            }
            
            .btn-enhanced {
                padding: 1rem 2.5rem;
                font-size: 1.2rem;
                min-height: 52px;
            }
        }

        /* Progress Bar */
        .progress-container {
            margin: 1rem 0;
            background: rgba(30, 30, 30, 0.8);
            border-radius: 10px;
            padding: 1rem;
        }

        .progress-bar-custom {
            width: 100%;
            height: 8px;
            background: #333;
            border-radius: 5px;
            overflow: hidden;
            margin-bottom: 0.5rem;
        }

        .progress-fill {
            height: 100%;
            background: var(--gradient-primary);
            width: 0%;
            transition: width 0.3s ease;
            border-radius: 5px;
        }

        .progress-text {
            text-align: center;
            color: var(--primary-color);
            font-weight: bold;
        }

        /* Audio Visualizer */
        .audio-visualizer {
            display: flex;
            justify-content: center;
            align-items: end;
            height: 60px;
            gap: 3px;
            margin: 1rem 0;
            padding: 1rem;
            background: rgba(30, 30, 30, 0.8);
            border-radius: 10px;
        }

        .visualizer-bar {
            width: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
            transition: height 0.1s ease;
        }

        /* Settings Panel */
        .settings-panel {
            background: rgba(20, 20, 20, 0.9);
            border-radius: 15px;
            padding: 1.5rem;
            margin-top: 1.5rem;
            border: 1px solid #333;
        }

        .settings-title {
            color: var(--primary-color);
            font-size: 1.3rem;
            font-weight: bold;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* Language Detection */
        .language-info {
            background: rgba(0, 209, 178, 0.1);
            border: 1px solid var(--primary-color);
            border-radius: 10px;
            padding: 1rem;
            margin: 1rem 0;
            text-align: center;
            color: var(--text-primary);
        }

        /* Word Count */
        .word-count {
            background: rgba(30, 30, 30, 0.8);
            border-radius: 10px;
            padding: 0.8rem 1rem;
            margin: 1rem 0;
            text-align: center;
            color: var(--text-secondary);
            border: 1px solid #333;
        }

        /* Custom Notification Styles */
        @keyframes slideIn {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes slideOut {
            from {
                transform: translateX(0);
                opacity: 1;
            }
            to {
                transform: translateX(100%);
                opacity: 0;
            }
        }

        .notification {
            cursor: pointer;
            user-select: none;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .notification:hover {
            transform: scale(1.02);
        }

        /* Footer */
        footer {
            background: #000000;
            padding: 3rem 0 1rem;
            border-top: 1px solid rgba(0, 209, 178, 0.2);
        }

        .footer-section {
            margin-bottom: 2rem;
        }

        .footer-section h3 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .footer-section p,
        .footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--primary-color);
        }

        .footer-section ul {
            list-style: none;
            padding: 0;
        }

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

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


        /* Fade in animation */
        .fade-in-up {
            animation: fadeInUp 0.8s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .main-container {
                padding-top: 100px;
                padding-left: 1rem;
                padding-right: 1rem;
            }
            
            .tts-card {
                padding: 1.5rem;
                margin: 0.5rem 0;
            }
            
            .speech-icon {
                width: 80px;
                height: 80px;
                margin-bottom: 1.5rem;
            }
            
            .speech-icon i {
                font-size: 2rem;
            }
            
            .file-upload-area {
                padding: 1.5rem;
            }
            
            .settings-panel {
                padding: 1rem;
            }
            
            .notification {
                top: 10px;
                right: 10px;
                left: 10px;
                max-width: none;
                font-size: 0.9rem;
            }
        }

        /* Accessibility improvements */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            
            .speech-icon {
                animation: none;
            }
        }

        /* High contrast mode support */
        @media (prefers-contrast: high) {
            :root {
                --primary-color: #00ff00;
                --text-primary: #ffffff;
                --text-secondary: #cccccc;
                --card-bg: #000000;
                --dark-bg: #000000;
            }
            
            .tts-card {
                border: 2px solid var(--primary-color);
            }
            
            .range-slider {
                border: 1px solid var(--primary-color);
            }
        }