/* Reset & Base */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', 'Segoe UI', 
                         /* বাংলা ফন্ট */
                         'Noto Sans Bengali', 'SolaimanLipi', 'Kalpurush', 'Siyam Rupali',
                         /* আরবি ফন্ট */
                         'Noto Sans Arabic', 'Amiri', 'Scheherazade New', 'Cairo',
                         /* হিন্দি ফন্ট */
                         'Noto Sans Devanagari', 'Mangal', 'Kohinoor Devanagari',
                         /* চাইনিজ ফন্ট */
                         'Microsoft YaHei', 'SimSun',
                         /* জাপানিজ ফন্ট */
                         'Meiryo', 'MS PGothic',
                         /* রাশিয়ান ফন্ট */
                         'Arial', 'Helvetica Neue',
                         /* স্প্যানিশ/পর্তুগিজ ফন্ট */
                         'Roboto', 'Open Sans',
                         sans-serif;
        }
       
        :root {
            --primary: #8B5CF6;
            --primary-dark: #7C3AED;
            --secondary: #EC4899;
            --accent: #0EA5E9;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --dark-bg: #0F172A;
            --dark-card: #1E293B;
            --light-text: #F8FAFC;
            --light-text-secondary: #94A3B8;
            --border-color: #334155;
            --radius-xl: 14px;
            --radius-lg: 11px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-bg: rgba(30, 41, 59, 0.8);
            --glass-border: rgba(255, 255, 255, 0.1);
            --shadow-lg: 0 14px 28px -8px rgba(0, 0, 0, 0.5);
            --shadow-md: 0 6px 11px rgba(0, 0, 0, 0.2);
            --shadow-sm: 0 3px 6px rgba(0, 0, 0, 0.1);
            --gradient-primary: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
            --gradient-accent: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%);
        }
       
        .light {
            --dark-bg: #F8FAFC;
            --dark-card: #FFFFFF;
            --light-text: #1E293B;
            --light-text-secondary: #64748B;
            --border-color: #E2E8F0;
            --glass-bg: rgba(255, 255, 255, 0.95);
            --glass-border: rgba(148, 163, 184, 0.1);
            --shadow-lg: 0 14px 28px -8px rgba(148, 163, 184, 0.25);
            --shadow-md: 0 6px 11px rgba(148, 163, 184, 0.15);
            --shadow-sm: 0 3px 6px rgba(148, 163, 184, 0.1);
        }
       
        /* ফিক্সড সাইজ বডি - 30% ছোট এবং মাঝখানে */
        html, body {
            min-height: 100%;
            position: relative;
            overflow-x: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
        }
        
        .light html, .light body {
            background: linear-gradient(135deg, #F8FAFC 0%, #E0E7FF 100%);
        }
       
        body {
            width: 1614px;
            height: 859px;
            background: linear-gradient(135deg, var(--dark-bg) 0%, #1E1B4B 100%);
            color: var(--light-text);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            transition: var(--transition);
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%) scale(0.7);
            transform-origin: center;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
        }
       
        .light body {
            background: linear-gradient(135deg, #F8FAFC 0%, #E0E7FF 100%);
        }
       
        /* Enhanced Header - 30% smaller */
        .header {
            padding: 0 28px;
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: var(--transition);
            height: 49px;
            width: 1614px;
        }
       
        .header.hidden {
            transform: translateY(-100%);
        }
       
        .logo-container {
            display: flex;
            align-items: center;
            gap: 8px;
        }
       
        .logo {
            display: flex;
            align-items: center;
            gap: 7px;
            text-decoration: none;
        }
       
        .logo-icon {
            font-size: 1.4rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 2px 4px rgba(139, 92, 246, 0.3));
        }
       
        .logo-text {
            font-size: 1.05rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.35px;
        }
       
        .light .logo-text {
            filter: drop-shadow(0 2px 4px rgba(139, 92, 246, 0.2));
        }
       
        /* Updated nav-menu styles - 30% smaller */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 7px;
            margin: 0 auto;
            background: rgba(139, 92, 246, 0.08);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 3px;
            border: 1px solid var(--glass-border);
        }
       
        .nav-link {
            color: var(--light-text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.63rem;
            padding: 6px 11px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            display: flex;
            align-items: center;
            gap: 4px;
            border: 1px solid transparent;
            background: transparent;
        }
       
        .nav-link:hover {
            color: var(--light-text);
            background: rgba(139, 92, 246, 0.15);
            border-color: rgba(139, 92, 246, 0.3);
            transform: translateY(-1px);
            box-shadow: 0 3px 8px rgba(139, 92, 246, 0.1);
        }
       
        .nav-link.active {
            color: white;
            background: var(--gradient-primary);
            border-color: transparent;
            box-shadow: 0 3px 11px rgba(139, 92, 246, 0.25);
            transform: translateY(-2px);
        }
       
        .header-controls {
            display: flex;
            align-items: center;
            gap: 14px;
        }
       
        .mode-toggle-container {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 8px;
            background: rgba(139, 92, 246, 0.1);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            transition: var(--transition);
        }
       
        .mode-toggle-container:hover {
            background: rgba(139, 92, 246, 0.2);
            border-color: var(--primary);
            transform: translateY(-1px);
        }
       
        .mode-icon {
            font-size: 0.77rem;
            transition: var(--transition);
        }
       
        .toggle-switch {
            position: relative;
            width: 36px;
            height: 20px;
            background: linear-gradient(135deg, #334155 0%, #475569 100%);
            border-radius: 10px;
            cursor: pointer;
            transition: var(--transition);
            overflow: hidden;
        }
       
        .light .toggle-switch {
            background: linear-gradient(135deg, #E2E8F0 0%, #CBD5E1 100%);
        }
       
        .toggle-switch::before {
            content: '';
            position: absolute;
            top: 2px;
            left: 2px;
            width: 16px;
            height: 16px;
            background: white;
            border-radius: 50%;
            transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            box-shadow: var(--shadow-sm);
            z-index: 2;
        }
       
        .toggle-switch::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--gradient-primary);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
       
        #modeToggle:checked + .toggle-switch::before {
            transform: translateX(16px);
        }
       
        #modeToggle:checked + .toggle-switch::after {
            opacity: 1;
        }
       
        #modeToggle {
            display: none;
        }
       
        .user-profile {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 4px 8px;
            background: rgba(139, 92, 246, 0.1);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            transition: var(--transition);
        }
       
        .user-profile:hover {
            background: rgba(139, 92, 246, 0.2);
            border-color: var(--primary);
            transform: translateY(-1px);
        }
       
        .user-avatar {
            width: 22px;
            height: 22px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            font-size: 0.63rem;
        }
       
        .user-name {
            font-size: 0.63rem;
            font-weight: 600;
            color: var(--light-text);
        }
       
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--light-text);
            font-size: 1.05rem;
            cursor: pointer;
            padding: 6px;
        }
       
        /* FIXED 4-Column Main Container - 30% smaller */
        .main-container {
            display: flex;
            flex: 1;
            padding: 70px 14px 14px;
            gap: 14px;
            width: 1614px;
            min-height: calc(859px - 70px);
            margin: 0;
            position: relative;
        }
        
        .four-column-layout {
            display: grid;
            grid-template-columns: 224px 1fr 1fr 350px;
            gap: 14px;
            width: 100%;
            min-height: calc(859px - 105px);
        }
        
        /* Column 1: Effects Gallery - 30% smaller */
        .effects-panel {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 11px;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            height: calc(859px - 105px);
            overflow-y: auto;
        }
       
        .light .effects-panel {
            background: var(--glass-bg);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        .panel-title {
            font-size: 0.77rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
        }
       
        .panel-title::before {
            content: '✨';
            font-size: 0.84rem;
        }
       
        .effects-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 6px;
            flex: 1;
            overflow-y: auto;
            padding-right: 4px;
        }
       
        .effect-btn {
            background: rgba(139, 92, 246, 0.08);
            border: 2px solid rgba(139, 92, 246, 0.15);
            border-radius: var(--radius-md);
            padding: 6px 3px;
            color: var(--light-text);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            text-align: center;
            min-height: 49px;
            position: relative;
            overflow: hidden;
        }
       
        .light .effect-btn {
            background: rgba(139, 92, 246, 0.05);
            border-color: rgba(139, 92, 246, 0.1);
        }
       
        .effect-btn:hover {
            background: rgba(139, 92, 246, 0.15);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(139, 92, 246, 0.2);
        }
       
        .light .effect-btn:hover {
            box-shadow: 0 4px 14px rgba(139, 92, 246, 0.15);
        }
       
        .effect-btn.active {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-color: transparent;
            box-shadow: 0 6px 14px rgba(139, 92, 246, 0.3);
            transform: translateY(-2px);
            color: white;
        }
       
        .light .effect-btn.active {
            box-shadow: 0 6px 14px rgba(139, 92, 246, 0.25);
        }
       
        .effect-icon {
            font-size: 14px;
            margin-bottom: 1px;
            position: relative;
            z-index: 1;
            width: 17px;
            height: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
       
        .effect-name {
            font-size: 0.53rem;
            font-weight: 500;
            position: relative;
            z-index: 1;
            line-height: 1.1;
        }
        
        /* Column 2: Enhanced Controls - 30% smaller */
        .enhanced-controls-panel {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 14px;
            display: flex;
            flex-direction: column;
            gap: 11px;
            box-shadow: var(--shadow-lg);
            overflow-y: auto;
            transition: var(--transition);
            height: calc(859px - 105px);
        }
       
        .light .enhanced-controls-panel {
            background: var(--glass-bg);
            border-color: rgba(148, 163, 184, 0.2);
        }
        
        /* Column 3: Text & Quotes - 30% smaller */
        .text-quotes-panel {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 14px;
            display: flex;
            flex-direction: column;
            gap: 11px;
            box-shadow: var(--shadow-lg);
            overflow-y: auto;
            transition: var(--transition);
            height: calc(859px - 105px);
        }
        
        .light .text-quotes-panel {
            background: var(--glass-bg);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        /* Column 4: Live Preview - 30% smaller */
        .preview-panel {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 14px;
            display: flex;
            flex-direction: column;
            gap: 11px;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            height: calc(859px - 105px);
            overflow-y: auto;
        }
       
        .light .preview-panel {
            background: var(--glass-bg);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        /* Common Settings Sections - 30% smaller */
        .settings-section {
            background: rgba(15, 23, 42, 0.6);
            border-radius: var(--radius-lg);
            padding: 11px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
       
        .light .settings-section {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
        
        .text-quotes-section {
            background: rgba(15, 23, 42, 0.6);
            border-radius: var(--radius-lg);
            padding: 11px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        
        .light .text-quotes-section {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        .settings-section:hover {
            border-color: rgba(139, 92, 246, 0.3);
            box-shadow: var(--shadow-sm);
        }
        
        .text-quotes-section:hover {
            border-color: rgba(139, 92, 246, 0.3);
            box-shadow: var(--shadow-sm);
        }
       
        .section-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 11px;
            padding-bottom: 6px;
            border-bottom: 1px solid var(--border-color);
        }
       
        .section-icon {
            font-size: 0.84rem;
            color: var(--primary);
            background: rgba(139, 92, 246, 0.1);
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }
       
        .light .section-icon {
            background: rgba(139, 92, 246, 0.15);
        }
       
        .section-title {
            font-size: 0.7rem;
            font-weight: 600;
        }
        
        /* Music Upload Section - 30% smaller */
        .music-upload-section {
            background: rgba(15, 23, 42, 0.6);
            border-radius: var(--radius-lg);
            padding: 11px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        
        .light .music-upload-section {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        .control-group {
            margin-bottom: 8px;
        }
       
        .control-label {
            display: block;
            margin-bottom: 4px;
            color: var(--light-text-secondary);
            font-size: 0.63rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
       
        .slider-container {
            display: flex;
            align-items: center;
            gap: 7px;
        }
       
        .slider-container input[type="range"] {
            flex: 1;
            height: 4px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--border-color) 0%, var(--primary) 100%);
            outline: none;
            -webkit-appearance: none;
            cursor: pointer;
        }
       
        .light .slider-container input[type="range"] {
            background: linear-gradient(90deg, #E2E8F0 0%, var(--primary) 100%);
        }
       
        .slider-container input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 13px;
            height: 13px;
            border-radius: 50%;
            background: white;
            cursor: pointer;
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
       
        .slider-container input[type="range"]::-webkit-slider-thumb:hover {
            transform: scale(1.1);
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
        }
       
        .value-display {
            min-width: 28px;
            text-align: center;
            padding: 3px 6px;
            background: rgba(139, 92, 246, 0.1);
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: 1px solid rgba(139, 92, 246, 0.2);
            font-size: 0.56rem;
            transition: var(--transition);
        }
       
        .light .value-display {
            background: rgba(139, 92, 246, 0.08);
            border-color: rgba(139, 92, 246, 0.15);
        }
       
        /* Beautiful Action Buttons Container - 30% smaller */
        .action-buttons-container {
            margin-top: auto;
            background: rgba(15, 23, 42, 0.6);
            border-radius: var(--radius-lg);
            padding: 14px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
       
        .light .action-buttons-container {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        /* Button Group Layout */
        .button-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
       
        /* Individual Action Buttons with Enhanced Styling - 30% smaller */
        .action-btn {
            padding: 10px 14px;
            border-radius: var(--radius-md);
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 0.67rem;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            min-height: 34px;
            box-shadow: var(--shadow-sm);
        }
       
        .action-btn::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 ease;
        }
       
        .action-btn:hover::before {
            left: 100%;
        }
       
        .primary-btn {
            background: var(--gradient-primary);
            color: white;
            box-shadow: 0 3px 11px rgba(139, 92, 246, 0.3);
        }
       
        .secondary-btn {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid var(--glass-border);
            color: var(--light-text);
        }
       
        .light .secondary-btn {
            background: rgba(30, 41, 59, 0.05);
            border-color: rgba(148, 163, 184, 0.3);
        }
       
        .success-btn {
            background: var(--gradient-accent);
            color: white;
            box-shadow: 0 3px 11px rgba(14, 165, 233, 0.3);
        }
       
        .warning-btn {
            background: linear-gradient(135deg, var(--warning) 0%, #D97706 100%);
            color: white;
            box-shadow: 0 3px 11px rgba(245, 158, 11, 0.3);
        }
       
        .danger-btn {
            background: linear-gradient(135deg, var(--danger) 0%, #B91C1C 100%);
            color: white;
            box-shadow: 0 3px 11px rgba(239, 68, 68, 0.3);
        }
       
        .action-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
       
        .action-btn:active {
            transform: translateY(0);
        }
       
        .action-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
       
        .action-btn:disabled::before {
            display: none;
        }
       
        .color-picker {
            display: flex;
            align-items: center;
            gap: 7px;
        }
       
        .color-input {
            width: 28px;
            height: 28px;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            background: transparent;
            transition: var(--transition);
        }
       
        .color-input:hover {
            transform: scale(1.1);
        }
       
        .color-input::-webkit-color-swatch-wrapper {
            padding: 0;
        }
       
        .color-input::-webkit-color-swatch {
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }
       
        .light .color-input::-webkit-color-swatch {
            border-color: rgba(148, 163, 184, 0.3);
        }
       
        .duration-input {
            display: flex;
            align-items: center;
            gap: 7px;
        }
       
        .duration-input input {
            flex: 1;
            padding: 7px 10px;
            background: rgba(30, 41, 59, 0.8);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--light-text);
            font-size: 0.67rem;
            outline: none;
            transition: var(--transition);
        }
       
        .light .duration-input input {
            background: rgba(248, 250, 252, 0.9);
            border-color: rgba(148, 163, 184, 0.3);
        }
       
        .duration-input input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.1);
        }
       
        .duration-unit {
            color: var(--light-text-secondary);
            font-size: 0.6rem;
        }
       
        .preview-header {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
       
        .upload-buttons-group {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
       
        .upload-area {
            background: rgba(255, 255, 255, 0.05);
            border: 2px dashed var(--border-color);
            border-radius: var(--radius-md);
            padding: 21px 11px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
       
        .light .upload-area {
            background: rgba(30, 41, 59, 0.05);
            border-color: rgba(148, 163, 184, 0.3);
        }
       
        .upload-area:hover {
            background: rgba(139, 92, 246, 0.1);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
       
        .upload-area.active {
            background: rgba(139, 92, 246, 0.15);
            border-color: var(--primary);
            border-style: solid;
        }
       
        .upload-icon {
            font-size: 25px;
            margin-bottom: 6px;
            color: var(--primary);
        }
       
        .upload-text {
            font-size: 0.67rem;
            font-weight: 600;
            margin-bottom: 3px;
        }
       
        .upload-subtext {
            color: var(--light-text-secondary);
            font-size: 0.6rem;
            line-height: 1.4;
        }
       
        .file-input {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            cursor: pointer;
        }
       
        .preview-container {
            flex: 1;
            background: rgba(0, 0, 0, 0.3);
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 210px;
        }
       
        .light .preview-container {
            background: rgba(30, 41, 59, 0.05);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        #previewCanvas {
            max-width: 100%;
            max-height: 100%;
            display: block;
            background: transparent;
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
        }
       
        .preview-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(15, 23, 42, 0.95);
            z-index: 10;
            transition: opacity 0.3s ease;
        }
       
        .light .preview-overlay {
            background: rgba(248, 250, 252, 0.95);
        }
       
        /* Enhanced Music Controls with Better Layout - 30% smaller */
        .music-controls {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 11px;
            background: rgba(30, 41, 59, 0.5);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 11px;
        }
       
        .light .music-controls {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        .music-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 3px;
        }
       
        .music-title {
            font-size: 0.63rem;
            font-weight: 600;
            color: var(--light-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
       
        .music-status {
            font-size: 0.56rem;
            color: var(--light-text-secondary);
        }
        
        .audio-visualizer {
            width: 100%;
            height: 28px;
            background: rgba(30, 41, 59, 0.5);
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: flex-end;
            justify-content: space-around;
            padding: 1px;
        }
       
        .light .audio-visualizer {
            background: rgba(248, 250, 252, 0.8);
        }
        
        .audio-bar {
            width: 2px;
            background: var(--gradient-primary);
            transition: height 0.1s ease;
            border-radius: 1px;
        }
       
        .music-btn {
            background: rgba(139, 92, 246, 0.2);
            border: none;
            border-radius: var(--radius-sm);
            width: 25px;
            height: 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--primary);
            transition: var(--transition);
        }
       
        .light .music-btn {
            background: rgba(139, 92, 246, 0.1);
        }
       
        .music-btn:hover {
            background: rgba(139, 92, 246, 0.3);
            transform: scale(1.1);
        }
       
        .music-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }
       
        .progress-container {
            margin-top: 11px;
        }
       
        .progress-bar {
            width: 100%;
            height: 4px;
            background: var(--border-color);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 4px;
        }
       
        .progress-fill {
            height: 100%;
            background: var(--gradient-primary);
            width: 0%;
            transition: width 0.3s ease;
            border-radius: 2px;
        }
       
        .progress-text {
            text-align: center;
            margin-top: 4px;
            font-size: 0.6rem;
            color: var(--light-text-secondary);
        }
       
        .image-info-container {
            text-align: center;
            padding: 7px;
            background: rgba(30, 41, 59, 0.5);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-top: 7px;
        }
       
        .light .image-info-container {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
       
        .image-info {
            font-size: 0.6rem;
            color: var(--light-text);
        }
       
        .custom-position-controls {
            display: none;
            gap: 6px;
            margin-top: 6px;
        }
       
        .custom-position-controls.active {
            display: flex;
        }
       
        .switch {
            position: relative;
            display: inline-block;
            width: 34px;
            height: 17px;
        }
       
        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }
       
        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--border-color);
            transition: .4s;
            border-radius: 17px;
        }
       
        .slider:before {
            position: absolute;
            content: "";
            height: 13px;
            width: 13px;
            left: 2px;
            bottom: 2px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
            box-shadow: var(--shadow-sm);
        }
       
        input:checked + .slider {
            background: var(--gradient-primary);
        }
       
        input:checked + .slider:before {
            transform: translateX(17px);
        }
       
        .enhanced-controls {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(126px, 1fr));
            gap: 8px;
            margin-top: 6px;
        }
       
        .two-column-container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 11px;
        }
        
        /* Text & Quotes Specific Styles - 30% smaller */
        .advanced-text-controls {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
            margin-top: 8px;
        }
        
        .text-style-buttons {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 6px;
        }
        
        .text-style-btn {
            padding: 4px 8px;
            background: rgba(139, 92, 246, 0.1);
            border: 1px solid rgba(139, 92, 246, 0.2);
            border-radius: var(--radius-sm);
            color: var(--light-text);
            font-size: 0.56rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        
        .text-style-btn:hover {
            background: rgba(139, 92, 246, 0.2);
            transform: translateY(-1px);
        }
        
        .text-style-btn.active {
            background: rgba(139, 92, 246, 0.3);
            border-color: var(--primary);
        }
        
        /* Text Controls Styling */
        .text-control-select {
            width: 100%;
            padding: 6px;
            background: rgba(30, 41, 59, 0.8);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--light-text);
            font-size: 0.63rem;
        }

        .light .text-control-select {
            background: rgba(248, 250, 252, 0.9);
            border-color: rgba(148, 163, 184, 0.3);
        }

        .text-control-slider {
            width: 100%;
            height: 4px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--border-color) 0%, var(--primary) 100%);
            outline: none;
            -webkit-appearance: none;
            cursor: pointer;
        }

        .light .text-control-slider {
            background: linear-gradient(90deg, #E2E8F0 0%, var(--primary) 100%);
        }

        .text-control-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: white;
            cursor: pointer;
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .text-control-slider::-webkit-slider-thumb:hover {
            transform: scale(1.1);
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
        }

        /* Text controls row styling */
        .text-controls-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
            margin-bottom: 8px;
        }

        /* Video Format Selection - 30% smaller */
        .video-format-section {
            background: rgba(15, 23, 42, 0.6);
            border-radius: var(--radius-lg);
            padding: 11px;
            border: 1px solid var(--border-color);
            margin-top: 8px;
        }
        
        .light .video-format-section {
            background: rgba(248, 250, 252, 0.8);
            border-color: rgba(148, 163, 184, 0.2);
        }
        
        .format-option {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 6px;
            margin-bottom: 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        
        .format-option:hover {
            background: rgba(139, 92, 246, 0.1);
        }
        
        .format-option input[type="radio"] {
            width: 13px;
            height: 13px;
            accent-color: var(--primary);
        }
        
        .format-label {
            font-size: 0.63rem;
            color: var(--light-text);
        }
        
        .format-description {
            font-size: 0.53rem;
            color: var(--light-text-secondary);
            margin-left: 20px;
        }
        
        /* Volume Control Styles */
        .volume-control {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 4px;
        }
        
        .volume-icon {
            font-size: 0.63rem;
            color: var(--primary);
        }
        
        /* Enhanced Music Status */
        .music-status.ready {
            color: var(--success);
        }
        
        .music-status.playing {
            color: var(--primary);
            animation: pulse 1.5s infinite;
        }
        
        @keyframes pulse {
            0% { opacity: 0.7; }
            50% { opacity: 1; }
            100% { opacity: 0.7; }
        }

        /* Conversion Progress Overlay */
        .conversion-progress {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            padding: 20px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--glass-border);
            z-index: 2000;
            box-shadow: var(--shadow-lg);
            min-width: 300px;
            text-align: center;
            display: none;
        }

        .conversion-progress.active {
            display: block;
        }

        .conversion-progress .progress-bar {
            width: 100%;
            height: 4px;
            background: var(--border-color);
            border-radius: 2px;
            overflow: hidden;
            margin: 10px 0;
        }

        .conversion-progress .progress-fill {
            height: 100%;
            background: var(--gradient-primary);
            width: 0%;
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .conversion-progress .progress-text {
            font-size: 0.8rem;
            color: var(--light-text);
            margin-top: 5px;
        }

        /* Footer */
        .footer {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 21px;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.56rem;
            color: var(--light-text-secondary);
            z-index: 999;
        }

        /* মোবাইল রেস্পন্সিভ ডিজাইন */
        @media (max-width: 768px) {
            body {
                width: 100%;
                height: auto;
                position: static;
                transform: none;
                border-radius: 0;
                box-shadow: none;
            }
            
            .header {
                width: 100%;
                padding: 0 10px;
                height: 60px;
            }
            
            .main-container {
                width: 100%;
                padding: 70px 10px 10px;
                min-height: auto;
            }
            
            .four-column-layout {
                grid-template-columns: 1fr;
                gap: 10px;
                min-height: auto;
            }
            
            .effects-panel,
            .enhanced-controls-panel,
            .text-quotes-panel,
            .preview-panel {
                height: auto;
                min-height: 300px;
                max-height: 400px;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--glass-bg);
                flex-direction: column;
                padding: 10px;
                display: none;
                z-index: 1000;
                backdrop-filter: blur(20px);
                border: 1px solid var(--glass-border);
                border-radius: 0 0 var(--radius-xl) var(--radius-xl);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-link {
                width: 100%;
                justify-content: center;
                padding: 10px;
                font-size: 0.7rem;
            }
            
            .effects-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .preview-container {
                min-height: 250px;
            }
            
            .header-controls {
                gap: 8px;
            }
            
            .mode-toggle-container {
                padding: 4px 6px;
            }
            
            .user-profile {
                padding: 3px 6px;
            }
            
            .user-name {
                display: none;
            }
            
            .footer {
                height: 30px;
                font-size: 0.5rem;
                padding: 8px;
            }
        }

        /* ট্যাবলেট ডিভাইস */
        @media (min-width: 769px) and (max-width: 1024px) {
            body {
                width: 95%;
                transform: translate(-50%, -50%) scale(0.9);
            }
            
            .four-column-layout {
                grid-template-columns: 1fr 1fr;
            }
            
            .effects-panel {
                grid-column: span 2;
            }
            
            .preview-panel {
                grid-column: span 2;
            }
            
            .effects-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            
            .header {
                width: 100%;
            }
            
            .main-container {
                width: 100%;
            }
        }

        /* ল্যান্ডস্কেপ মোবাইল */
        @media (max-width: 768px) and (orientation: landscape) {
            body {
                height: 100vh;
            }
            
            .four-column-layout {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .effects-panel,
            .enhanced-controls-panel,
            .text-quotes-panel,
            .preview-panel {
                height: 300px;
            }
            
            .effects-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* ছোট মোবাইল */
        @media (max-width: 480px) {
            .effects-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .advanced-text-controls {
                grid-template-columns: 1fr;
            }
            
            .text-controls-row {
                grid-template-columns: 1fr;
            }
            
            .two-column-container {
                grid-template-columns: 1fr;
            }
            
            .action-btn {
                padding: 8px 12px;
                font-size: 0.6rem;
            }
            
            .preview-container {
                min-height: 200px;
            }
            
            .upload-area {
                padding: 15px 8px;
            }
            
            .upload-icon {
                font-size: 20px;
            }
        }

        /* Touch friendly improvements */
        .effect-btn,
        .action-btn,
        .nav-link,
        .music-btn {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
            touch-action: manipulation;
        }
        
        .effect-btn:active,
        .action-btn:active,
        .nav-link:active {
            transform: scale(0.95);
        }
        
        /* Scrollbar improvements for mobile */
        .effects-grid::-webkit-scrollbar,
        .enhanced-controls-panel::-webkit-scrollbar,
        .text-quotes-panel::-webkit-scrollbar,
        .preview-panel::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        
        /* Prevent text selection */
        .no-select {
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            -khtml-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;   }