* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }

        :root {
            --primary: #3498db;
            --primary-dark: #2980b9;
            --secondary: #2c3e50;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #34495e;
            --success: #2ecc71;
            --editor-bg: #1e1e1e;
            --header-bg: #252526;
            --tab-bg: #2d2d30;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            background: var(--secondary);
            color: var(--light);
            height: 100vh;
            overflow: hidden;
            touch-action: pan-y;
        }

        #app {
            height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Header */
        .header {
            background: var(--header-bg);
            padding: 12px 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            z-index: 10;
            flex-shrink: 0;
        }

        .app-title {
            font-size: 1.2rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .header-controls {
            display: flex;
            gap: 10px;
        }

        .btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 5px;
            transition: all 0.2s;
        }

        .btn:active {
            transform: scale(0.95);
            background: var(--primary-dark);
        }

        .dropdown {
            position: relative;
            display: inline-block;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
            z-index: 1;
        }

        .dropdown-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
        }

        .dropdown-content a:hover {background-color: #f1f1f1}

        .dropdown:hover .dropdown-content {
            display: block;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
        }

        .btn-success {
            background: var(--success);
        }

        /* Tabs */
        .tabs {
            display: flex;
            background: var(--tab-bg);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-shrink: 0;
        }

        .tabs::-webkit-scrollbar {
            display: none;
        }

        .tab {
            padding: 12px 20px;
            white-space: nowrap;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tab.active {
            border-bottom-color: var(--primary);
            background: rgba(52, 152, 219, 0.1);
        }

        /* Editor Area */
        .editor-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .editor-wrapper {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .editor-header {
            padding: 8px 15px;
            background: var(--header-bg);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.9rem;
            color: #ccc;
            flex-shrink: 0;
        }

        textarea {
            flex: 1;
            background: var(--editor-bg);
            color: #d4d4d4;
            border: none;
            padding: 15px;
            font-family: 'Courier New', Courier, monospace;
            font-size: 16px;
            line-height: 1.5;
            resize: none;
            outline: none;
            width: 100%;
            -webkit-overflow-scrolling: touch;
            overflow-y: auto;
        }

        /* Quick Preview */
        .quick-preview {
            background: var(--dark);
            padding: 12px 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            flex-shrink: 0;
        }

        .preview-info {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        /* Toast */
        .toast {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            background: var(--success);
            color: white;
            padding: 12px 20px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            z-index: 100;
            opacity: 0;
            transition: all 0.3s ease;
        }

        .toast.show {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
        }

        /* Mobile Optimizations */
        @media (max-width: 768px) {
            .btn span.text {
                display: none;
            }
            
            .btn {
                padding: 10px;
                border-radius: 50%;
                width: 40px;
                height: 40px;
                justify-content: center;
            }
            
            .tab {
                padding: 12px 15px;
                font-size: 0.9rem;
            }
            
            .app-title {
                font-size: 1.1rem;
            }
        }

        /* Handle very small screens */
        @media (max-width: 360px) {
            .header {
                padding: 10px;
            }
            
            .tab {
                padding: 10px 12px;
                font-size: 0.85rem;
            }
            
            .tab i {
                font-size: 0.9rem;
            }
        }

        /* Hide scrollbars but keep functionality */
        textarea::-webkit-scrollbar {
            width: 5px;
        }

        textarea::-webkit-scrollbar-thumb {
            background: #555;
            border-radius: 10px;
        }

        /* Floating Action Button */
        .floating-btn-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            padding: 10px 15px;
            border-radius: 20px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
            z-index: 100;
            transition: transform 0.3s ease;
        }

        .floating-btn {
            color: white;
            text-decoration: none;
            font-size: 0.9rem;
        }

        .close-btn {
            background: none;
            border: none;
            color: white;
            font-size: 1.2rem;
            cursor: pointer;
        }