.level-selection{text-align:center;width:100%;max-width:900px;padding:20px 10px;box-sizing:border-box}.title{font-size:3rem;color:#fff;margin-bottom:1rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.mascot-container{display:flex;justify-content:center;align-items:center;margin:2rem 0;width:100%}.mascot-image{max-width:200px;max-height:200px;width:auto;height:auto;object-fit:contain;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media (max-width: 768px){.mascot-image{max-width:150px;max-height:150px}}.subtitle{font-size:1.2rem;color:#ffffffe6;margin-bottom:3rem}.category-section{margin-bottom:60px;width:100%}.category-title{font-size:1.5rem;margin-bottom:20px;color:#fff;text-shadow:1px 1px 2px rgba(0,0,0,.3)}.level-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:2rem}.jlpt-mode-buttons{display:flex;gap:30px;justify-content:center;margin-top:30px;flex-wrap:wrap}.jlpt-mode-button{background:rgba(255,255,255,.95);border:3px solid transparent;border-radius:20px;padding:30px 50px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a;width:100%;max-width:400px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:15px}.jlpt-mode-button:hover{transform:translateY(-3px);box-shadow:0 8px 16px #0003;border-color:#667eea}.jlpt-mode-button.active{border-color:#667eea;background:linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 100%);box-shadow:0 6px 12px #667eea4d}.mode-button-icon{font-size:3rem;line-height:1;margin-bottom:5px}.mode-button-title{font-size:1.5rem;color:#333;margin:0;font-weight:700}.mode-button-description{font-size:.95rem;color:#0009;margin:0;font-style:italic}.level-select-panel{position:fixed;top:0;right:0;bottom:0;width:100%;max-width:400px;z-index:2000;display:flex;animation:slideInRight .3s ease}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.panel-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:1999}.panel-content{background:white;width:100%;padding:30px;overflow-y:auto;box-shadow:-4px 0 20px #0003;position:relative;z-index:2001}.panel-close{position:absolute;top:15px;right:15px;background:none;border:none;font-size:2rem;color:#999;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s}.panel-close:hover{background:#f0f0f0;color:#333}.panel-title{font-size:1.8rem;color:#333;margin:0 0 10px;font-weight:700}.panel-description{font-size:1rem;color:#0009;margin:0 0 30px;font-style:italic}.panel-levels{display:flex;flex-direction:column;gap:15px}.panel-level-card{background:white;border:3px solid #e0e0e0;border-radius:15px;padding:20px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:15px;position:relative}.panel-level-card:hover:not(.coming-soon){transform:translate(-5px);border-color:var(--level-color);box-shadow:0 4px 12px #00000026}.panel-level-card.coming-soon{opacity:.6;cursor:not-allowed}.panel-level-icon{font-size:2rem}.panel-level-name{font-size:1.3rem;font-weight:700;color:#333}@media (max-width: 768px){.jlpt-mode-buttons{flex-direction:column;align-items:center}.jlpt-mode-button{width:100%;max-width:400px;padding:25px 30px}.level-select-panel{max-width:100%}}.kana-level-grid{grid-template-columns:repeat(2,1fr);gap:12px;max-width:400px;margin-left:auto;margin-right:auto}.jlpt-level-grid{grid-template-columns:repeat(5,1fr);gap:12px}.theme-level-grid{grid-template-columns:repeat(4,1fr);gap:15px}@media (max-width: 900px){.kana-level-grid{max-width:100%}.jlpt-level-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}.theme-level-grid{grid-template-columns:repeat(2,1fr)}}.level-card{background:white;border:none;border-radius:15px;padding:2rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a;position:relative;overflow:hidden}.level-card.coming-soon{opacity:.6;cursor:not-allowed;position:relative}.level-card.coming-soon:hover{transform:none;box-shadow:0 4px 6px #0000001a}.level-card.coming-soon:hover:before{transform:scaleX(0)}.coming-soon-badge{position:absolute;top:8px;right:8px;background:#ff6b6b;color:#fff;font-size:.7rem;font-weight:700;padding:4px 8px;border-radius:12px;white-space:nowrap;box-shadow:0 2px 4px #0003}.kana-level-card,.jlpt-level-card{padding:1.2rem .8rem;display:flex;flex-direction:column;align-items:center;gap:8px}.kana-icon{font-size:2.5rem;line-height:1;font-weight:400}.jlpt-icon{font-size:2rem;line-height:1}.level-card:before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--level-color);transform:scaleX(0);transition:transform .3s ease}.level-card:hover{transform:translateY(-5px);box-shadow:0 8px 15px #0003}.level-card:hover:before{transform:scaleX(1)}.level-name{font-size:1.5rem;font-weight:700;color:#333}.kana-level-card .level-name,.jlpt-level-card .level-name{font-size:1.2rem}.theme-level-card{padding:1.5rem 1rem;display:flex;flex-direction:column;align-items:center;gap:10px}.theme-icon{font-size:2.5rem;line-height:1}.theme-level-card .level-name{font-size:1.1rem;font-weight:600}.action-buttons{display:flex;gap:15px;justify-content:center;margin-top:30px;flex-wrap:wrap}.board-button,.blog-button{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border:none;padding:15px 40px;border-radius:25px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003}.board-button:hover,.blog-button:hover{transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}@media (max-width: 768px){.level-selection{padding:15px 10px}.title{font-size:clamp(1.5rem,8vw,2.5rem);margin-bottom:.5rem}.subtitle{font-size:clamp(.9rem,4vw,1.2rem);margin-bottom:1.5rem}.category-section{margin-bottom:25px}.category-title{font-size:clamp(1.1rem,5vw,1.5rem);margin-bottom:15px}.level-grid{grid-template-columns:1fr;gap:15px;margin-top:1rem}.theme-level-grid{grid-template-columns:repeat(2,1fr)}.jlpt-options{margin-top:30px;gap:25px}.option-section-title{font-size:1.1rem;margin-bottom:15px}.theme-icon,.kana-icon{font-size:2rem}.jlpt-icon{font-size:1.8rem}.level-card{padding:1.5rem 1rem}.level-name{font-size:clamp(1.1rem,5vw,1.5rem)}.board-button{width:100%;max-width:300px;padding:12px 30px;font-size:1rem;margin-top:20px}}.flashcard-quiz{width:100%;max-width:500px;margin:0 auto;padding:20px;display:flex;flex-direction:column;height:calc(100% - 60px);max-height:calc(100% - 60px);overflow:hidden;box-sizing:border-box;justify-content:center}.quiz-info{display:flex;justify-content:space-between;color:#fff;font-size:.9rem}.flashcard{position:relative;width:100%;height:auto;min-height:0;flex:1;perspective:1000px;margin-bottom:15px;cursor:pointer;display:flex;align-items:center;justify-content:center;transform-style:preserve-3d;transition:transform .6s,opacity .15s ease-in-out;opacity:1}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d}.flashcard.flipped{transform:rotateY(180deg)}.flashcard.transitioning{opacity:0;pointer-events:none;visibility:hidden}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;min-height:280px;max-height:100%;backface-visibility:hidden;border-radius:15px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px 20px;box-shadow:0 8px 20px #0000004d;box-sizing:border-box;overflow:hidden}.flashcard-front{background:white;color:#333}.flashcard-back{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;transform:rotateY(180deg)}.word-display{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;gap:12px}.flashcard-quiz .word-kanji{font-size:clamp(4rem,10vw,6rem);font-weight:700;margin:0;color:#333;line-height:1.2;text-align:center;width:100%;font-family:Noto Sans JP,Hiragino Kaku Gothic ProN,Meiryo,sans-serif}.flashcard-quiz .word-reading{font-size:clamp(1.5rem,4vw,2rem);color:#666;margin:0;line-height:1.3;text-align:center;width:100%;font-family:Noto Sans JP,Hiragino Kaku Gothic ProN,Meiryo,sans-serif}.show-reading-btn{margin-top:0;padding:10px 20px;background:#667eea;color:#fff;border:none;border-radius:20px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 5px #0003;white-space:nowrap;z-index:5;position:relative}.flip-hint{position:absolute;bottom:10px;font-size:.8rem;color:#999;font-style:italic}.meaning-display{text-align:center}.meaning-text{font-size:clamp(1.3rem,4.5vw,2rem);font-weight:700;margin-bottom:10px;color:#fff;line-height:1.3;word-break:break-word;text-align:center}.example-text{font-size:clamp(.9rem,2.5vw,1.2rem);color:#ffffffe6;font-style:italic;line-height:1.4;word-break:break-word;text-align:center}.answer-buttons{display:flex;gap:15px;justify-content:center;margin-top:15px;flex-shrink:0}.answer-btn{padding:15px 40px;border:none;border-radius:25px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003}.wrong-btn{background:#e74c3c;color:#fff}.wrong-btn:hover{background:#c0392b;transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}.correct-btn{background:#2ecc71;color:#fff}.correct-btn:hover{background:#27ae60;transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}.result-message{text-align:center;color:#fff;font-size:1.2rem;margin-top:20px;padding:15px;background:rgba(255,255,255,.2);border-radius:10px}.quiz-complete{text-align:center;background:white;padding:40px;border-radius:20px;box-shadow:0 10px 30px #0000004d}.stat-label{font-size:1rem;color:#666}.stat-value{font-size:2.5rem;font-weight:700;color:#333}.restart-button{padding:15px 40px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border:none;border-radius:25px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003;width:100%;max-width:300px}.retry-wrong-button{padding:15px 40px;background:linear-gradient(135deg,#e74c3c 0%,#c0392b 100%);color:#fff;border:none;border-radius:25px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003;width:100%;max-width:300px}@media (max-width: 768px){.flashcard-quiz{max-width:100%;padding:60px 10px 10px;height:auto;min-height:100vh;max-height:none;justify-content:flex-start}.quiz-header{margin-bottom:15px;flex-shrink:0;margin-top:10px}.quiz-info{font-size:.8rem;flex-wrap:wrap;gap:5px}.flashcard{min-height:250px;flex:0 1 auto;max-height:none;margin-bottom:15px;aspect-ratio:1}.flashcard-front,.flashcard-back{min-height:250px;max-height:none;padding:15px;overflow-y:auto;overflow-x:hidden}.flashcard-quiz .word-kanji{font-size:clamp(3.5rem,12vw,5rem);margin:0}.flashcard-quiz .word-reading{font-size:clamp(1.3rem,5vw,1.8rem);margin:0}.meaning-text{font-size:clamp(1.2rem,6vw,1.8rem);margin-bottom:10px}.example-text{font-size:clamp(.9rem,3vw,1.1rem)}.flip-hint{font-size:.75rem;bottom:8px}.show-reading-btn{padding:10px 20px;font-size:1rem;font-weight:500;margin-top:0}.answer-buttons{flex-direction:column;gap:12px;margin-top:15px;width:100%}.answer-btn{width:100%;padding:14px 30px;font-size:1rem}.result-message{font-size:1rem;margin-top:15px;padding:12px}}@media (max-width: 480px){.flashcard-quiz{padding:55px 8px 8px}.quiz-header{margin-bottom:12px;margin-top:8px}.quiz-info{font-size:.75rem}.flashcard{min-height:220px;margin-bottom:12px}.flashcard-front,.flashcard-back{min-height:220px;padding:12px}.flashcard-quiz .flashcard-quiz .word-kanji{font-size:clamp(1.6rem,7vw,2.2rem)}.meaning-text{font-size:clamp(1.1rem,5vw,1.6rem)}.flashcard-quiz .word-reading{font-size:clamp(.9rem,3.5vw,1.2rem)}.example-text{font-size:clamp(.85rem,2.8vw,1rem)}.answer-btn{padding:12px 25px;font-size:.95rem}.flip-hint{font-size:.7rem;bottom:6px}}.multiple-choice-quiz{width:100%;max-width:800px;margin:0 auto;padding:10px;display:flex;flex-direction:column;height:calc(100% - 60px);max-height:calc(100% - 60px);overflow:hidden;box-sizing:border-box;justify-content:center}.quiz-header{margin-bottom:15px;flex-shrink:0}.progress-bar{width:100%;height:8px;background:rgba(255,255,255,.3);border-radius:4px;overflow:hidden;margin-bottom:15px}.progress-fill{height:100%;background:white;transition:width .3s ease;border-radius:4px}.quiz-info{display:flex;justify-content:space-between;color:#fff;font-size:.9rem;flex-wrap:wrap;gap:10px}.question-card{background:white;border-radius:20px;padding:20px;margin-bottom:15px;box-shadow:0 10px 30px #0000004d;flex-shrink:0}.question-header{margin-bottom:10px}.question-label{font-size:1.2rem;color:#666;font-weight:500}.word-display{text-align:center;margin-top:10px}.word-kanji{font-size:clamp(2.5rem,8vw,4rem);font-weight:700;margin-bottom:10px;color:#333;line-height:1.2}.word-reading{font-size:clamp(1.2rem,4vw,2rem);color:#666;margin-bottom:10px;line-height:1.4}.show-reading-btn{margin-top:10px;padding:6px 16px;background:#667eea;color:#fff;border:none;border-radius:20px;font-size:.85rem;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 5px #0003}.show-reading-btn:hover{background:#5568d3;transform:translateY(-2px);box-shadow:0 4px 8px #0000004d}.options-container{display:flex;flex-direction:column;gap:10px;margin-bottom:15px;flex:1;min-height:0;overflow-y:auto}.option-button{display:flex;align-items:center;gap:12px;padding:12px 20px;background:white;border:2px solid #e0e0e0;border-radius:15px;font-size:clamp(.95rem,2.5vw,1.1rem);cursor:pointer;transition:all .3s ease;text-align:left;width:100%;box-shadow:0 2px 5px #0000001a;flex-shrink:0}.option-button:hover:not(:disabled){border-color:#667eea;transform:translateY(-2px);box-shadow:0 4px 10px #0003}.option-button:disabled{cursor:not-allowed;opacity:.6}.option-button.correct{background:#d4edda;border-color:#2ecc71;color:#155724}.option-button.wrong{background:#f8d7da;border-color:#e74c3c;color:#721c24}.option-button.disabled{opacity:.5}.option-number{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:#667eea;color:#fff;border-radius:50%;font-weight:700;font-size:1.1rem;flex-shrink:0}.option-button.correct .option-number{background:#2ecc71}.option-button.wrong .option-number{background:#e74c3c}.option-text{flex:1;line-height:1.5;word-break:break-word}.result-icon{font-size:1.5rem;flex-shrink:0}.result-message{text-align:center;color:#fff;font-size:clamp(1rem,3vw,1.2rem);margin-top:10px;padding:15px;background:rgba(255,255,255,.2);border-radius:15px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);flex-shrink:0}.correct-message{color:#2ecc71;font-weight:700;margin-bottom:10px}.wrong-message{color:#e74c3c;font-weight:700;margin-bottom:10px}.example-hint{margin-top:15px;font-size:1rem;color:#ffffffe6;font-style:italic}.quiz-complete{text-align:center;background:white;padding:40px;border-radius:20px;box-shadow:0 10px 30px #0000004d;max-width:600px;margin:0 auto}.completion-message{margin-bottom:30px;padding:20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:15px;color:#fff}.message-title{font-size:2.5rem;margin-bottom:15px;font-weight:700}.message-description{font-size:1.2rem;line-height:1.6;opacity:.95}.final-stats{display:flex;justify-content:space-around;margin:30px 0;flex-wrap:wrap;gap:20px}.stat-item{display:flex;flex-direction:column;align-items:center;gap:10px}.stat-label{font-size:1rem;color:#666;font-weight:500}.stat-value{font-size:2rem;font-weight:700;color:#333}.stat-value.correct{color:#2ecc71}.stat-value.wrong{color:#e74c3c}.quiz-actions{display:flex;flex-direction:column;gap:15px;margin-top:30px;align-items:center}.restart-button{padding:15px 40px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border:none;border-radius:25px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003;width:100%;max-width:300px}.restart-button:hover{transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}.retry-wrong-button{padding:15px 40px;background:linear-gradient(135deg,#e74c3c 0%,#c0392b 100%);color:#fff;border:none;border-radius:25px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0003;width:100%;max-width:300px}.retry-wrong-button:hover{transform:translateY(-2px);box-shadow:0 6px 12px #0000004d;background:linear-gradient(135deg,#c0392b 0%,#a93226 100%)}@media (max-width: 768px){.multiple-choice-quiz{padding:60px 15px 15px;height:auto;min-height:100vh;max-height:none;justify-content:flex-start}.quiz-header{margin-bottom:15px;margin-top:10px}.question-card{padding:25px}.word-kanji{font-size:3rem}.word-reading{font-size:1.5rem}.option-button{padding:15px 20px;font-size:1rem}.option-number{width:35px;height:35px;font-size:1rem}.quiz-info{font-size:.8rem;flex-wrap:wrap;gap:5px}}@media (max-width: 480px){.multiple-choice-quiz{padding:55px 8px 8px}.quiz-header{margin-bottom:12px;margin-top:8px}}.quiz-mode-selection{text-align:center;width:100%;max-width:800px}.back-button{background:rgba(255,255,255,.2);border:2px solid white;color:#fff;padding:10px 20px;border-radius:25px;cursor:pointer;font-size:1rem;margin-bottom:2rem;transition:all .3s ease}.back-button:hover{background:rgba(255,255,255,.3);transform:translate(-5px)}.mode-title{font-size:2.5rem;color:#fff;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.mode-subtitle{font-size:1.1rem;color:#ffffffe6;margin-bottom:3rem}.mode-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;margin-top:2rem}.mode-card{background:white;border:none;border-radius:20px;padding:2.5rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a;text-align:center}.mode-card:hover{transform:translateY(-10px);box-shadow:0 12px 24px #0003}.mode-icon{font-size:4rem;margin-bottom:1rem}.mode-card h3{font-size:1.8rem;color:#333;margin-bottom:.5rem}.mode-card p{font-size:1rem;color:#666}.quiz-mode-container{width:100%;max-width:800px;margin:0 auto;display:flex;flex-direction:column;height:calc(100vh - 20px);max-height:calc(100vh - 20px);box-sizing:border-box;justify-content:center;align-items:center;position:relative;padding-top:60px}.quiz-mode-container:has(.word-table-container){max-width:1400px;justify-content:flex-start;padding-top:60px}.quiz-mode-container .back-button{position:absolute;top:10px;left:10px;z-index:10;margin-bottom:0}@media (max-width: 768px){.quiz-mode-container{height:100vh;max-height:100vh;justify-content:flex-start;padding-top:0}.quiz-mode-container:has(.word-table-container){max-width:100%;padding-top:0}.quiz-mode-container .back-button{top:10px;left:10px;padding:8px 14px;font-size:.85rem;z-index:100;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}}@media (max-width: 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