:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(prefers-reduced-motion:no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}:root{--primary-color: #4a90e2;--success-color: #52c41a;--danger-color: #f5222d;--warning-color: #faad14;--bg-color: #ffffff;--card-bg: #ffffff;--text-primary: #262626;--text-secondary: #8c8c8c;--border-color: #d9d9d9}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background-color:var(--bg-color);color:var(--text-primary)}.app{min-height:100vh;padding:20px;max-width:min(95vw,800px);width:100dvw;box-sizing:border-box;margin:0 auto}#root{width:100dvw;box-sizing:border-box}header{text-align:center;margin-bottom:40px}header h1{font-size:2.5rem;color:var(--primary-color);margin:0}.word-list-manager{display:flex;flex-direction:column;gap:30px;max-width:min(95vw,800px);width:100%;margin:0 auto}.add-word-section{background:var(--card-bg);padding:30px;border-radius:12px;box-shadow:0 2px 8px #0000001a;border:1px solid var(--border-color)}.add-word-section h2,.add-word-section h3{color:var(--text-primary);margin-top:0}.add-single{display:flex;gap:10px;margin-bottom:30px}.add-single input{flex:1;padding:12px;border:1px solid var(--border-color);border-radius:6px;font-size:16px;background-color:#fff;color:var(--text-primary)}.add-single button,.add-bulk button{padding:12px 24px;background-color:var(--primary-color);color:#fff;border:none;border-radius:6px;font-size:16px;cursor:pointer}.add-bulk textarea{width:100%;padding:12px;border:1px solid var(--border-color);border-radius:6px;font-size:16px;font-family:monospace;margin-bottom:10px;resize:vertical;background-color:#fff;color:var(--text-primary)}.word-selection-section{background:var(--card-bg);padding:30px;border-radius:12px;box-shadow:0 2px 8px #0000001a;border:1px solid var(--border-color)}.word-selection-section h2{color:var(--text-primary);margin-top:0}.selection-controls{display:flex;gap:10px;margin-bottom:20px}.selection-controls button{padding:8px 16px;background-color:#fff;color:var(--primary-color);border:1px solid var(--primary-color);border-radius:6px;cursor:pointer}.bulk-selection{margin-bottom:20px;padding:15px;background-color:#f8f9fa;border-radius:6px}.bulk-selection p{margin:0 0 10px;color:var(--text-primary);font-weight:600}.bulk-buttons{display:flex;flex-wrap:wrap;gap:8px}.bulk-buttons button{padding:8px 16px;border:1px solid var(--primary-color);border-radius:6px;cursor:pointer;font-size:14px;transition:all .2s}.word-list{max-height:400px;overflow-y:auto;border:1px solid var(--border-color);border-radius:6px;margin-bottom:20px}.word-item{display:flex;align-items:center;padding:15px;border-bottom:1px solid var(--border-color);cursor:pointer}.word-item.selected{background-color:#e6f7ff}.word-item .word{font-weight:600;min-width:150px;color:var(--text-primary)}.word-item .meaning{color:var(--text-secondary)}.start-button{width:100%;padding:16px;background-color:var(--success-color);color:#fff;border:none;border-radius:6px;font-size:18px;cursor:pointer}.quiz{background:var(--card-bg);padding:40px;border-radius:12px;max-width:min(95vw,800px);width:100%;margin:0 auto;border:1px solid var(--border-color)}.quiz-header{display:flex;justify-content:space-between;margin-bottom:30px}.quiz-header button{padding:10px 20px;background-color:var(--primary-color);color:#fff;border:none;border-radius:6px;cursor:pointer}.quiz-header h2{margin:0;color:var(--text-primary)}.completion-notice{background-color:#f6ffed;border:1px solid #b7eb8f;padding:15px;border-radius:6px;margin-bottom:20px;text-align:center;color:#389e0d;font-weight:600}.question h1{font-size:2.5rem;text-align:center;color:var(--text-primary)}.choices{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:40px 0}.choice{padding:30px;background-color:#f8f9fa;border:2px solid var(--border-color);border-radius:8px;font-size:1.2rem;cursor:pointer;transition:all .2s;color:var(--text-primary);font-weight:500}.choice:hover:not(:disabled){border-color:var(--primary-color);background-color:#e7f3ff}.choice.selected{border-color:var(--primary-color);background-color:#d4e9ff}.choice.correct{border-color:var(--success-color);background-color:#f6ffed;color:var(--success-color)}.choice.wrong{border-color:var(--danger-color);background-color:#fff1f0;color:var(--danger-color)}.choice:disabled{cursor:not-allowed}.choice.skip{background-color:#fff7e6;border-color:var(--warning-color);color:var(--warning-color);grid-column:1 / -1}.choice.skip:hover:not(:disabled){background-color:#ffe7ba}.result{text-align:center;padding:30px;border-radius:8px}.result.correct{background-color:#f6ffed}.result.wrong{background-color:#fff1f0}.result p{font-size:1.5rem;margin-bottom:20px;color:var(--text-primary);font-weight:600}.next-button{padding:15px 40px;background-color:var(--primary-color);color:#fff;border:none;border-radius:6px;font-size:1.1rem;cursor:pointer}.statistics{background:var(--card-bg);padding:40px;border-radius:12px;border:1px solid var(--border-color);max-width:min(95vw,800px);width:100%;margin:0 auto}.stats-header{display:flex;justify-content:space-between;margin-bottom:30px}.stats-header h2{color:var(--text-primary)}.stats-header button{padding:10px 20px;background-color:var(--primary-color);color:#fff;border:none;border-radius:6px;cursor:pointer}.stats-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}.stat-card{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:30px;border-radius:12px;text-align:center}.stat-value{font-size:2.5rem;font-weight:700}table{width:100%;border-collapse:collapse}thead{background-color:var(--primary-color);color:#fff}th,td{padding:15px;text-align:left}tbody tr{border-bottom:1px solid var(--border-color);background-color:#fff}tbody tr:hover{background-color:#f8f9fa}.word-cell{font-weight:600;color:var(--text-primary)}.meaning-cell{color:var(--text-secondary)}.correct-cell{color:var(--success-color);font-weight:600}.wrong-cell{color:var(--danger-color);font-weight:600}.need-bar-container{position:relative;width:100%;height:24px;background-color:#f0f0f0;border-radius:12px;overflow:hidden}.need-bar{height:100%;border-radius:12px}.need-value{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-weight:600}.word-set-manager{background:var(--card-bg);padding:40px;border-radius:12px;box-shadow:0 2px 8px #0000001a;border:1px solid var(--border-color);max-width:min(95vw,800px);width:100%;margin:0 auto}.word-set-manager h2{color:var(--text-primary);margin-top:0;margin-bottom:30px}.create-set-button{width:100%;padding:16px;background-color:var(--primary-color);color:#fff;border:none;border-radius:6px;font-size:18px;cursor:pointer;margin-bottom:30px}.create-set-button:hover{background-color:#3a7bc8}.sets-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.empty-state{grid-column:1 / -1;text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state p{margin:10px 0}.set-card{background:#f8f9fa;border:2px solid var(--border-color);border-radius:8px;padding:20px;cursor:pointer;transition:all .2s}.set-card:hover{border-color:var(--primary-color);box-shadow:0 4px 12px #4a90e233;transform:translateY(-2px)}.set-card h3{color:var(--text-primary);margin:0 0 10px;font-size:1.2rem}.set-info{color:var(--text-secondary);font-size:.9rem;margin-bottom:15px}.set-actions{display:flex;gap:10px;margin-top:10px}.edit-button,.delete-button,.select-button{flex:1;padding:10px 12px;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500}.select-button{background-color:var(--primary-color);color:#fff}.edit-button{background-color:var(--warning-color);color:#fff}.delete-button{background-color:var(--danger-color);color:#fff}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;padding:40px;border-radius:12px;max-width:600px;width:90%;max-height:80vh;overflow-y:auto}.modal h2{color:var(--text-primary);margin-top:0}.modal label{display:block;margin-bottom:20px}.modal label span{display:block;margin-bottom:8px;color:var(--text-primary);font-weight:600}.modal input,.modal textarea{width:100%;padding:12px;border:1px solid var(--border-color);border-radius:6px;font-size:16px;background-color:#fff;color:var(--text-primary)}.modal textarea{min-height:200px;font-family:monospace;resize:vertical}.modal-actions{display:flex;gap:10px;margin-top:20px}.modal-actions button{flex:1;padding:12px;border:none;border-radius:6px;font-size:16px;cursor:pointer}.modal-actions button:first-child{background-color:var(--primary-color);color:#fff}.modal-actions button:last-child{background-color:#f0f0f0;color:var(--text-primary)}.current-set-name{color:var(--text-secondary);font-size:1rem;margin-top:10px}.drawer-overlay{position:fixed;inset:0;background-color:#00000080;z-index:999;animation:fadeIn .3s ease-in-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{transform:translate(100%)}to{transform:translate(0)}}.statistics-drawer{position:fixed;top:0;right:0;bottom:0;width:min(90vw,900px);background:var(--card-bg);box-shadow:-4px 0 20px #00000026;z-index:1000;overflow-y:auto;animation:slideIn .3s ease-in-out}.drawer-header{display:flex;justify-content:space-between;align-items:center;padding:30px;border-bottom:1px solid var(--border-color);position:sticky;top:0;background:var(--card-bg);z-index:10}.drawer-header h2{margin:0;color:var(--text-primary)}.close-button{width:40px;height:40px;border:none;background-color:transparent;color:var(--text-secondary);font-size:24px;cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .2s}.close-button:hover{background-color:#f0f0f0;color:var(--text-primary)}.drawer-content{padding:30px}.drawer-content .stats-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:40px}.drawer-content .stat-card{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px;border-radius:12px;text-align:center}.drawer-content .stat-card h3{margin:0 0 10px;font-size:.9rem;opacity:.9}.drawer-content .word-stats-table{margin-top:30px}.drawer-content .word-stats-table h3{color:var(--text-primary);margin-bottom:20px}.drawer-content table{width:100%;border-collapse:collapse;font-size:.9rem}.drawer-content thead{background-color:var(--primary-color);color:#fff}.drawer-content th{padding:12px 8px;text-align:left;font-size:.85rem;white-space:nowrap}.drawer-content td{padding:12px 8px;text-align:left}.drawer-content tbody tr{border-bottom:1px solid var(--border-color);background-color:#fff}.drawer-content tbody tr:hover{background-color:#f8f9fa}