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#0000004d;max-width:400px;padding:20px}.modal-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:5px;width:100%}.modal-header h2{color:#1e293b;flex:1 1;font-size:18px;font-weight:600;margin:0}.close-btn{align-items:center;background:none;border:none;border-radius:50%;color:#64748b;cursor:pointer;display:flex;flex-shrink:0;font-size:20px;height:30px;justify-content:center;transition:all .2s;width:30px}.close-btn:hover{background-color:#f1f5f9;color:#334155}.tab-menu{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.tab-btn{background:#f8fafc;border:1px solid #e2e8f0;border-radius:6px;cursor:pointer;font-size:12px;font-weight:500;padding:5px 8px;transition:all .2s}.tab-btn.active{background:#3b82f6;border-color:#3b82f6;color:#fff}.tab-btn:hover:not(.active){background:#e2e8f0}.tab-content{color:#333;font-size:14px;line-height:1.6}.policy-modal{background:#fff;border-radius:12px;box-shadow:0 8px 25px 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1;flex-direction:column;gap:16px;min-height:300px;padding:20px}.quiz-phrase{color:#1e293b;font-size:1.75rem;font-weight:700;margin-bottom:4px;text-align:center}.quiz-phrase span{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3498db,#8e44ad);-webkit-background-clip:text;background-clip:text}.quiz-question{color:#64748b;font-size:1.1rem;margin-bottom:16px;text-align:center}.feedback{align-items:center;animation:pulse 1.5s infinite;border-radius:12px;display:flex;flex-direction:column;gap:8px;margin:10px 0;padding:16px;text-align:center}.feedback.correct{background-color:#dcfce7;color:#166534}.feedback.wrong{background-color:#fee2e2;color:#b91c1c}.feedback-icon{font-size:28px;margin-bottom:4px}.correct-answer{font-size:1.1rem;font-weight:700}.bonus{background-color:#fef3c7;border-radius:8px;color:#92400e;font-size:.9rem;font-weight:500;margin-top:4px;padding:4px 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h2{color:#1e293b;font-size:1.8rem;margin-bottom:8px}.score-display{align-items:center;background:linear-gradient(135deg,#3498db,#8e44ad);border-radius:16px;color:#fff;display:flex;flex-direction:column;max-width:300px;padding:20px;width:80%}.score-display span{font-size:1.2rem;margin-bottom:8px}.score-display h1{font-size:3.5rem;font-weight:700;margin:0}.quiz-loading{height:100%;justify-content:center}.loading-card,.quiz-loading{align-items:center;display:flex}.loading-card{background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000014;flex-direction:column;gap:16px;padding:24px;text-align:center}.loading-card p{color:#64748b;margin:0}.loading-spinner{animation:spin 1s linear infinite;border:4px solid #e2e8f0;border-radius:50%;border-top-color:#3498db;height:40px;width:40px}.quiz-not-ready{align-items:center;display:flex;height:100%;justify-content:center;padding:20px}.not-enough-card{align-items:center;background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000014;display:flex;flex-direction:column;gap:16px;max-width:350px;padding:30px 24px;text-align:center}.not-enough-icon{font-size:40px}.not-enough-card h3{color:#1e293b;font-size:1.5rem;font-weight:700;margin-bottom:5px}.not-enough-card p{color:#64748b;font-size:1rem;margin-bottom:5px}.current-count{font-weight:500;margin-top:8px}.current-count span{color:#3498db;font-weight:700}.remaining{font-weight:500}.remaining span{color:#f97316;font-weight:700}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes pulse{0%{opacity:1}50%{opacity:.8}to{opacity:1}}@media (max-width:768px){.quiz-card{min-height:250px;padding:16px}.quiz-phrase{font-size:1.5rem}.not-enough-card{padding:20px 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1;flex-direction:column;gap:16px;min-height:300px;padding:25px;perspective:1000px;transition:transform .3s}.review-card.flipping{transform:rotateY(90deg)}.card-content{display:flex;flex-direction:column;height:100%;justify-content:space-between}.slang-phrase{color:#1e293b;font-size:1.75rem;margin-bottom:20px}.slang-phrase span{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3498db,#8e44ad);-webkit-background-clip:text;background-clip:text}.meaning-container{margin-top:16px}.example,.meaning{background-color:#f8fafc;border-radius:10px;color:#334155;font-size:1.1rem;line-height:1.5;margin-bottom:12px;padding:10px}.example-label,.meaning-label{color:#0f172a;font-weight:600;margin-right:8px}.example{background-color:#f1f5f9}.button-container{display:flex;justify-content:center;margin-top:auto;padding-top:20px}.action-btn{border:none;border-radius:10px;font-weight:500;padding:12px 24px;transition:all .2s ease;white-space:nowrap}.action-btn,.review-action-btn{display:inline-flex;font-size:1rem;gap:8px}.review-action-btn{align-items:center;background-color:#fff;border:2px solid #e5e7eb;border-radius:16px;box-sizing:border-box;font-weight:600;justify-content:center;min-width:200px;padding:16px 32px}.meaning-btn{background-color:#3498db;box-shadow:0 4px 6px #3498db4d;color:#fff}.meaning-btn:hover{background-color:#2980b9;box-shadow:0 6px 8px #3498db66}.next-btn{background-color:#4caf50;box-shadow:0 4px 6px #4caf504d;color:#fff}.next-btn:hover{background-color:#3e8e41;box-shadow:0 6px 8px #4caf5066;transform:translateY(-2px)}.review-footer{display:flex;justify-content:space-between;margin-bottom:60px;margin-top:16px}.exit-button{background-color:initial;border:1px solid #cbd5e1;border-radius:8px;color:#64748b;cursor:pointer;font-size:.9rem;padding:10px 16px;transition:all .2s ease}.exit-button:hover{background-color:#f1f5f9;color:#334155}.review-empty{align-items:center;display:flex;height:100%;justify-content:center;padding:20px}.review-empty-card{align-items:center;background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000014;display:flex;flex-direction:column;gap:16px;max-width:350px;padding:30px 24px;text-align:center}.icon-container{align-items:center;background-color:#f0f9ff;border-radius:50%;display:flex;height:80px;justify-content:center;margin-bottom:10px;width:80px}.empty-icon{font-size:40px}.review-empty-card h3{color:#1e293b;font-size:1.5rem;font-weight:700;margin-bottom:5px}.review-empty-card p{color:#64748b;font-size:1rem}.back-button{background-color:#3498db;box-shadow:0 4px 6px #3498db4d;color:#fff;font-size:1rem;font-weight:500;margin-top:10px;padding:12px 24px;transition:all .2s ease}.back-button:hover{background-color:#2980b9;box-shadow:0 6px 8px #3498db66}.review-complete{align-items:center;display:flex;height:100%;justify-content:center;padding:20px}.review-complete-card{align-items:center;background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000014;display:flex;flex-direction:column;gap:16px;max-width:350px;padding:32px 24px;text-align:center}.complete-icon-container{align-items:center;background:linear-gradient(135deg,#3498db,#8e44ad);border-radius:50%;box-shadow:0 8px 15px #8e44ad4d;display:flex;height:100px;justify-content:center;margin-bottom:15px;width:100px}.complete-icon{font-size:50px}.review-complete-card h2{color:#1e293b;font-size:1.8rem;font-weight:700;margin-bottom:5px}.review-complete-card p{color:#64748b;font-size:1.1rem}.confetti{font-size:28px;letter-spacing:10px;margin:10px 0}@media (max-width:768px){.review-card{min-height:250px;padding:20px}.slang-phrase{font-size:1.5rem}}.chat-container{background-color:#fff;border-radius:16px;box-shadow:0 4px 12px #0000001a;display:flex;flex-direction:column;height:70vh;max-height:500px;overflow:hidden;position:relative}.chat-header{align-items:center;background-color:#3b82f6;color:#fff;display:flex;font-weight:700;justify-content:space-between;padding:12px 20px}.status-badge{background-color:#34d399;border-radius:12px;color:#fff;font-size:.8rem;font-weight:700;padding:4px 8px}.messages-container{background:linear-gradient(180deg,#f0f9ff,#e0f2fe);display:flex;flex:1 1;flex-direction:column;gap:10px;overflow-y:auto;padding:20px}.message-bubble{border-radius:18px;max-width:80%;padding:12px 16px;word-break:break-word}.user-message{align-self:flex-end;background-color:#dbeafe;border-bottom-right-radius:4px;color:#1e3a8a}.bot-message,.user-message{box-shadow:0 1px 2px #0000001a}.bot-message{align-self:flex-start;background-color:#fff;border-bottom-left-radius:4px;color:#1e293b}.input-container{background-color:#f8fafc;border-top:1px solid #e2e8f0;display:flex;padding:12px}.text-input{background-color:#fff;border:1px solid #d1d5db;border-radius:24px;flex:1 1;font-size:1rem;outline:none;padding:12px 16px}.send-button{align-items:center;background-color:#3b82f6;border:none;border-radius:50%;box-shadow:0 2px 5px #0000001a;color:#fff;cursor:pointer;display:flex;font-size:1.2rem;height:46px;justify-content:center;margin-left:10px;transition:all .2s;width:46px}.send-button:hover{background-color:#2563eb;box-shadow:0 4px 8px #0000001a;transform:translateY(-2px)}.send-button:disabled{background-color:#93c5fd;cursor:not-allowed;transform:none}.back-button{align-items:center;background-color:#f1f5f9;border:none;border-radius:8px;box-shadow:0 1px 3px #0000000d;color:#64748b;cursor:pointer;display:flex;font-size:.9rem;font-weight:700;justify-content:center;margin:16px auto;padding:8px 16px;transition:all .2s}.back-button:hover{background-color:#e2e8f0;transform:translateY(-2px)}.limit-message{background-color:#fee2e2;border-radius:8px;color:#b91c1c;font-size:.9rem;margin-bottom:12px;padding:10px 16px;text-align:center}.highlight-slang{background-color:#fef3c7;border-radius:4px;color:#92400e;font-weight:700;padding:2px 4px}.loading-indicator{align-items:center;color:#6b7280;display:flex;font-style:italic;gap:8px;justify-content:center;padding:10px}.dot{animation:bounce 1s infinite;background-color:#3b82f6;border-radius:50%;height:8px;width:8px}.dot:nth-child(2){animation-delay:.2s}.dot:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.remaining-count{color:#6b7280;font-size:.8rem;margin-top:8px;text-align:center}.level-badge{background-color:#0ea5e9;border-radius:12px;color:#fff;font-size:.85rem;margin-left:8px;padding:2px 8px}.chat-wrapper{padding:10px}.swipe-wrapper{margin:0 auto;max-width:400px;perspective:1000px;width:100%}.card,.swipe-wrapper{height:600px;position:relative}.card{backface-visibility:hidden;background:linear-gradient(135deg,#fff,#f8f9fa);border-radius:24px;box-shadow:0 20px 60px #00000026;max-height:600px;min-height:600px;overflow:hidden;padding:0;transform-style:preserve-3d;-webkit-user-select:none;user-select:none}.card:active{cursor:grabbing!important}.slang-content{display:flex;flex:1 1;flex-direction:column;justify-content:flex-start;min-height:450px;overflow:hidden;padding:30px 25px 20px}.slang-phrase{align-items:center;color:#1a1a1a;display:flex;font-size:1.8rem;font-weight:700;justify-content:center;line-height:1.4;margin-bottom:25px;min-height:80px;text-align:center}.btn-column{display:flex;flex-direction:column;gap:15px;margin:25px 0}.audio-btn,.meaning-btn{background:#fff;border:2px solid #e5e7eb;border-radius:12px;color:#4b5563;cursor:pointer;font-size:1rem;font-weight:600;padding:14px 20px;transition:all .2s}.meaning-btn:hover{background:#eff6ff;border-color:#3b82f6;box-shadow:0 4px 12px #3b82f626;color:#3b82f6;transform:translateY(-2px)}.audio-btn:hover{background:#ecfdf5;border-color:#10b981;box-shadow:0 4px 12px #10b98126;color:#10b981;transform:translateY(-2px)}.audio-btn:disabled,.meaning-btn:disabled{cursor:not-allowed;opacity:.5}.meaning-section{align-items:stretch;display:flex;flex-direction:column;gap:12px;max-height:280px;overflow-y:auto;padding-right:5px}.meaning-section::-webkit-scrollbar{width:6px}.meaning-section::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}.meaning-section::-webkit-scrollbar-thumb{background:#888;border-radius:10px}.meaning-section::-webkit-scrollbar-thumb:hover{background:#555}.meaning{animation:fadeIn .3s ease;background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:2px solid #bae6fd;border-radius:16px;display:flex;flex-direction:column;flex-shrink:1;height:fit-content;margin-top:0;padding:12px 20px}.meaning h3{margin-bottom:6px;margin-top:0}.meaning p{word-wrap:break-word;line-height:1.5;margin-bottom:0;margin-top:0;overflow-wrap:break-word}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.meaning-label{color:#0284c7;font-size:1.1rem;font-weight:700}.example{background:linear-gradient(135deg,#f0fdf4,#dcfce7);border:2px solid #86efac;border-radius:16px;color:#64748b;display:flex;flex-direction:column;flex-shrink:1;font-style:italic;height:fit-content;margin-top:0;padding:10px 15px}.example h3{margin-bottom:4px;margin-top:0}.example p{word-wrap:break-word;line-height:1.5;margin-bottom:0;margin-top:0;overflow-wrap:break-word}.example-label{color:#059669;font-weight:700}.action-buttons{flex-shrink:0;gap:30px;margin-top:auto;min-height:110px;padding:20px}.action-btn,.action-buttons{display:flex;justify-content:center}.action-btn{align-items:center;background:#fff;border:2px solid #e5e7eb;border-radius:50%;cursor:pointer;font-size:32px;font-weight:700;height:60px;padding:0;transition:all .2s;width:60px}.action-btn:hover{box-shadow:0 4px 12px #0000001a;transform:translateY(-2px)}.action-btn:active{transform:translateY(0)}.reject-btn{border-color:#ff6b6b;color:#ff6b6b}.reject-btn:hover{background:#fff5f5}.accept-btn{border-color:#2f9e44;color:#2f9e44}.accept-btn:hover{background:#f0fdf4}.action-btn:disabled{cursor:not-allowed;opacity:.5}.swipe-hint{bottom:20px;color:#94a3b8;font-size:.85rem;font-weight:500;left:50%;letter-spacing:.5px;pointer-events:none;position:absolute;transform:translateX(-50%)}.card.dragging{z-index:10}@media (max-width:480px){.swipe-wrapper{height:550px}.slang-phrase{font-size:1.5rem;min-height:70px}.action-btn{font-size:1.5rem;height:60px;width:60px}}.app-container{background-color:#f8fafc;height:100vh;margin:0 auto;max-width:100%;overflow:hidden}.header{align-items:center;background-color:#fff;border-bottom:1px solid #0000000d;box-shadow:0 2px 4px #00000005;display:flex;height:40px;justify-content:space-between;padding:6px 16px;z-index:10}.logo{color:#0ea5e9;font-size:1.25rem;font-weight:700;letter-spacing:-.02em}.main-content{display:flex;flex:1 1;flex-direction:column;overflow:hidden;padding:5px 12px;position:relative}.card-section{align-items:center;display:flex;flex:1 1;justify-content:center;margin:20px;max-height:calc(100% - 10px);padding:0}.card{flex-direction:column;max-height:auto;max-width:500px;min-height:0!important;min-height:auto!important;overflow-y:auto}.ad-overlay,.card{display:flex;height:100%;width:100%}.ad-overlay{align-items:center;background-color:#000000b3;justify-content:center;left:0;position:fixed;top:0;z-index:1000}.ad-container{background-color:#fff;border-radius:10px;max-width:80%;padding:20px;text-align:center}.stats-panel{display:flex;justify-content:center;margin-bottom:3px;max-height:8vh;padding:3px 0}.menu-bar{background-color:#fff;border-bottom:1px solid #0000000d;border-top:1px solid #0000000d;box-shadow:0 -2px 4px #00000005,0 2px 4px #00000005;height:50px;justify-content:space-around;margin-top:5px;padding:5px 10px;position:relative;z-index:10}.menu-bar,.menu-button{align-items:center;display:flex}.menu-button{background:none;flex-direction:column;outline:none;padding:10px}.menu-bar button,.menu-button{border:none;cursor:pointer;justify-content:center}.menu-bar button{align-items:center;background-color:#f0f9ff;border-radius:8px;color:#0284c7;display:flex;flex:1 1;flex-direction:column;font-size:.85rem;font-weight:600;height:44px;margin:0 4px;min-width:0;overflow:hidden;padding:8px 2px;text-overflow:ellipsis;transition:all .2s;white-space:nowrap}.menu-bar button:hover{background-color:#e0f2fe;transform:translateY(-2px)}.menu-bar button:active{transform:translateY(0)}.menu-icon{font-size:1.1rem;margin-bottom:1px}.menu-text{font-size:.7rem}.company-footer{align-items:center;background-color:#f8fafc;color:#94a3b8;display:flex;font-size:.7rem;height:20px;justify-content:center;margin-top:3px;padding:2px 0;text-align:center}@media (max-width:700px){.menu-bar button{height:42px;padding:5px 2px}.header{height:45px;padding:8px 12px}.main-content{padding-bottom:0}}.swipe-wrapper{height:100%;margin-top:-20!important;min-height:auto!important}.swipe-guide{align-items:center;background-color:#000000b3;border-radius:16px;display:flex;height:100%;justify-content:center;position:absolute;width:100%;z-index:20}.guide-content{background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000026;max-width:80%;padding:20px;text-align:center}.swipe-left{animation:pulseLeft 2s infinite;color:#ef4444;justify-content:flex-start;margin-bottom:16px}.swipe-left,.swipe-right{align-items:center;display:flex;font-size:1.1rem;font-weight:600;padding:8px}.swipe-right{animation:pulseRight 2s infinite;color:#22c55e;justify-content:flex-end;margin-bottom:20px}.guide-content button{background-color:#3b82f6;border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:1rem;font-weight:600;margin-top:10px;padding:12px 20px;transition:all .2s}.guide-content button:hover{background-color:#2563eb;transform:translateY(-2px)}@keyframes pulseLeft{0%{transform:translateX(0)}50%{transform:translateX(-10px)}to{transform:translateX(0)}}@keyframes pulseRight{0%{transform:translateX(0)}50%{transform:translateX(10px)}to{transform:translateX(0)}}.start-learning-card{align-items:center;background-color:#fff;border-radius:16px;box-shadow:0 8px 20px #00000014;display:flex;flex-direction:column;justify-content:center;margin:0 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#00000026;display:flex;flex-direction:column;height:90vh;max-height:900px;max-width:506.25px;min-height:500px;min-width:281.25px;overflow-x:hidden;overflow-y:auto;position:relative;width:50.625vh}@media (orientation:landscape){.app-container{height:85vh;width:47.8125vh}}.modal-overlay{align-items:center;background-color:#0009;display:flex;height:100%;justify-content:center;left:0;position:fixed;top:0;width:100%;z-index:2001}.modal-content{background:#fff;border-radius:12px;box-shadow:0 8px 24px #00000026;max-width:320px;padding:24px;text-align:center;width:80%}.modal-content h3{color:#1e293b;font-size:1.2rem;font-weight:700;margin-bottom:12px}.modal-content p{color:#64748b;font-size:.9rem;margin-bottom:16px}.modal-buttons{display:flex;gap:10px;justify-content:space-around}.modal-buttons button{background-color:#3b82f6;border:none;border-radius:8px;color:#fff;cursor:pointer;flex:1 1;font-weight:600;padding:10px 16px;transition:all .2s}.modal-buttons 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