:root {
            --primary: #4a6fa5;
            --secondary: #166088;
            --accent: #4fc3f7;
            --gold: #ffd700;
            --dark: #2d3142;
            --light: #f8f9fa;
            --success: #4caf50;
            --warning: #ff9800;
            --error: #f44336;
            --border-radius: 12px;
            --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 20px;
            color: var(--dark);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            overflow: hidden;
            transform: translateY(0);
            transition: var(--transition);
            margin: 0 auto;
        }

        .container:hover {
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }

        .header {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            padding: 25px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(30deg);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            z-index: 1;
        }

        .logo i {
            font-size: 28px;
            color: var(--gold);
            text-shadow: 0 1px 3px rgba(0,0,0,0.3);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }

        .logo h1 {
            font-weight: 600;
            font-size: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .pro-badge {
            background: linear-gradient(to right, var(--gold), #c5a600);
            color: #000;
            padding: 3px 12px;
            border-radius: 15px;
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .version {
            font-size: 12px;
            opacity: 0.8;
            position: relative;
            z-index: 1;
        }

        .content {
            padding: 30px;
        }

        .control-panel {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .control-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .control-group label {
            font-weight: 600;
            font-size: 14px;
            color: var(--secondary);
        }

        .select-wrapper, .input-wrapper {
            position: relative;
        }

        select, input {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            background-color: white;
            font-size: 14px;
            transition: var(--transition);
            appearance: none;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        select:focus, input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.2);
        }

        .select-wrapper::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 50%;
            right: 15px;
            transform: translateY(-50%);
            pointer-events: none;
            color: var(--secondary);
            font-size: 12px;
        }

        .btn {
            padding: 12px 25px;
            border: none;
            border-radius: var(--border-radius);
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .btn::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 5px;
            height: 5px;
            background: rgba(255, 255, 255, 0.5);
            opacity: 0;
            border-radius: 100%;
            transform: scale(1, 1) translate(-50%);
            transform-origin: 50% 50%;
        }

        .btn:focus:not(:active)::after {
            animation: ripple 0.6s ease-out;
        }

        @keyframes ripple {
            0% {
                transform: scale(0, 0);
                opacity: 0.5;
            }
            100% {
                transform: scale(20, 20);
                opacity: 0;
            }
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0, 0, 0, 0.1);
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .btn-secondary {
            background: white;
            border: 1px solid #ddd;
            color: var(--secondary);
        }

        .btn-secondary:hover {
            background: #f5f5f5;
        }

        .btn-gold {
            background: linear-gradient(to right, var(--gold), #c5a600);
            color: #000;
        }

        .btn-gold:hover {
            background: linear-gradient(to right, #e6c200, #b59800);
        }

        .btn-reset {
            background: linear-gradient(to right, #f44336, #e53935);
            color: white;
        }

        .btn-reset:hover {
            background: linear-gradient(to right, #e53935, #d32f2f);
        }

        .btn-load-more {
            background: linear-gradient(to right, #4caf50, #43a047);
            color: white;
            margin: 20px auto;
            display: block;
        }

        .btn-load-more:hover {
            background: linear-gradient(to right, #43a047, #388e3c);
        }

        .btn-group {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .results {
            margin-top: 30px;
        }

        .results-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .results-title {
            font-weight: 600;
            color: var(--secondary);
        }

        .results-count {
            font-size: 14px;
            color: #666;
        }

        .word-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 15px;
            margin-bottom: 30px;
        }

        .word-card {
            background: white;
            border: 1px solid #eee;
            border-radius: var(--border-radius);
            padding: 15px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

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

        .word-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            border-color: var(--accent);
        }

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

        .word-text {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 5px;
            color: var(--dark);
        }

        .word-type {
            font-size: 12px;
            color: #666;
            text-transform: capitalize;
        }

        .loading-spinner {
            display: none;
            width: 40px;
            height: 40px;
            margin: 20px auto;
            border: 4px solid #f3f3f3;
            border-top: 4px solid var(--accent);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

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

        .copy-notification {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%) translateY(20px);
            background: var(--success);
            color: white;
            padding: 10px 20px;
            border-radius: var(--border-radius);
            font-weight: 500;
            opacity: 0;
            transition: var(--transition);
            z-index: 100;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }

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

        .history-panel {
            margin-top: 30px;
            border-top: 1px solid #eee;
            padding-top: 20px;
        }

        .history-list {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .history-item {
            background: #f5f5f5;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 13px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

        .history-item:hover {
            background: #e0e0e0;
            transform: translateY(-2px);
        }

        .download-panel {
            background: rgba(79, 195, 247, 0.1);
            border-left: 4px solid var(--accent);
            padding: 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 30px 0;
        }

        .download-panel h3 {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary);
        }

        .download-panel h3 i {
            color: var(--gold);
        }

        .download-options {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .premium-features {
            background: rgba(255, 215, 0, 0.1);
            border-left: 4px solid var(--gold);
            padding: 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 30px 0;
        }

        .premium-features h3 {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary);
        }

        .premium-features ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 10px;
        }

        .premium-features li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }

        .premium-features i {
            color: var(--gold);
        }

        .watermark {
            position: absolute;
            opacity: 0.1;
            font-size: 120px;
            font-weight: bold;
            color: var(--primary);
            transform: rotate(-30deg);
            pointer-events: none;
            z-index: 0;
        }

        /* Ripple effect */
        .ripple {
            position: absolute;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.7);
            transform: scale(0);
            animation: ripple 0.6s linear;
            pointer-events: none;
        }

        @keyframes ripple {
            to {
                transform: scale(4);
                opacity: 0;
            }
        }

        /* Floating animation for word cards */
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-5px); }
            100% { transform: translateY(0px); }
        }

        .word-card {
            animation: float 3s ease-in-out infinite;
        }

        .word-card:nth-child(2n) {
            animation-delay: 0.3s;
        }

        .word-card:nth-child(3n) {
            animation-delay: 0.6s;
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .container {
                width: 95%;
                margin: 20px auto;
            }
            
            .control-panel {
                grid-template-columns: 1fr;
            }
            
            .word-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            }

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

            .premium-features ul {
                grid-template-columns: 1fr;
            }

            .download-options {
                flex-direction: column;
            }
        }

        @media (max-width: 480px) {
            .header {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            
            .word-grid {
                grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
            }
        }