.mode-selector-container{box-sizing:border-box;overflow-x:hidden;padding:20px;position:relative;text-align:center}.options-button{align-items:center;background:#f0f0f0;border:none;border-radius:50%;box-shadow:0 2px 8px #0000001a;cursor:pointer;display:flex;height:48px;justify-content:center;position:absolute;right:20px;top:20px;transition:top .3s,bottom .3s;width:48px}.options-button:hover{transform:scale(1.1)}.mode-grid{grid-gap:20px;box-sizing:border-box;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));width:100%}.mode-card{border-radius:8px;box-shadow:0 2px 8px #0000001a;box-sizing:border-box;cursor:pointer;padding:20px;transition:transform .2s}.mode-card:hover{transform:scale(1.05)}.mode-title{font-size:1.5rem;margin-bottom:10px}.mode-description{color:#555;font-size:1rem}@media (max-width:768px){.mode-grid{grid-template-columns:1fr}.mode-card{padding:30px}.mode-title{font-size:1.75rem}.mode-description{font-size:1.25rem}.options-button{bottom:20px;position:fixed;right:20px;top:auto}}.game-options-container{align-items:center;box-sizing:border-box;display:flex;flex-direction:column;gap:20px;margin:0 auto;max-width:800px;overflow-x:hidden;padding:10px;width:100%}.game-options-header{padding:0 10px;position:relative;width:100%}.game-options-back-button,.game-options-header{align-items:center;display:flex;justify-content:center}.game-options-back-button{background:#f0f0f0;border:none;border-radius:50%;box-shadow:0 2px 8px #0000001a;cursor:pointer;height:40px;left:10px;position:absolute;top:10px;width:40px}.game-options-back-button:hover{transform:scale(1.1)}.game-options-select-all-button{background:#f0f0f0;border:none;border-radius:8px;box-shadow:0 2px 8px #0000001a;cursor:pointer;display:block;font-size:.9rem;margin-bottom:20px;padding:8px 16px}.game-options-select-all-button:hover{background:#e0e0e0;transform:scale(1.05)}.game-options-tables-container{display:flex;flex-direction:column;gap:40px;width:100%}.game-options-hiragana-table{margin:0 auto;width:100%}.game-options-hiragana-table-title{color:#333;font-size:1.2rem;margin-bottom:10px;text-align:center}.game-options-hiragana-grid{grid-gap:5px;display:grid;gap:5px;grid-auto-rows:60px;grid-template-columns:40px repeat(5,1fr);width:100%}.game-options-row-selector,.game-options-row-selector-container{align-items:center;display:flex;justify-content:center}.game-options-row-selector{background:#f5f5f5;border:1px solid #ddd;border-radius:50%;cursor:pointer;height:30px;padding:4px;transition:all .2s ease;width:30px}.game-options-row-selector.selected{background:#e3f2fd;border-color:#2196f3}.game-options-row-selector:hover{box-shadow:0 2px 8px #0000001a;transform:scale(1.1)}.game-options-row-selector svg{height:16px;width:16px}.game-options-hiragana-cell{align-items:center;border:1px solid #ddd;border-radius:6px;box-sizing:border-box;display:flex;flex-direction:column;justify-content:center;padding:10px;position:relative;text-align:center;transition:background-color .2s}.game-options-hiragana-cell:hover{background-color:#f5f5f5}.game-options-hiragana-cell.selected{background-color:#e3f2fd}.game-options-character{font-family:Noto Sans JP,sans-serif;font-size:1.2rem;margin-bottom:3px;position:relative;z-index:1}.game-options-romaji{color:#666;font-size:.8rem}.game-options-checkmark{color:#2196f380;font-size:1.5rem;left:50%;pointer-events:none;position:absolute;top:50%;transform:translate(-50%,-50%);z-index:0}@media (max-width:768px){.game-options-hiragana-table-title{font-size:1rem}.game-options-character{font-size:1.4rem}.game-options-romaji{font-size:1rem}.game-options-hiragana-cell{padding:8px}}.card-container{align-items:center;display:flex;justify-content:center}.hiragana-card{margin:0 auto;max-width:500px;min-width:300px;perspective:1000px;width:100%}.card-content{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#fffffff2;border-radius:20px;box-shadow:0 8px 30px #0003;box-sizing:border-box;display:flex;flex-direction:column;height:100%;justify-content:center;padding:30px;position:relative;width:100%}.streak-counter{border-radius:15px;box-shadow:0 0 2px #00000080;color:#333;font-size:14px;font-weight:700;padding:8px 15px;position:absolute;right:20px;top:20px}.hiragana{color:#333;font-family:Noto Sans 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(max-width:768px){.game-header{align-items:flex-start;flex-direction:column}.game-back-button{left:20px;position:absolute;top:20px}.game-quiz-container{padding:0 20px}}.flipping{transform:rotateY(180deg)}.sparkles{height:100%;left:0;pointer-events:none;position:absolute;top:0;width:100%}.sparkle{animation:sparkle-animation .5s ease-out forwards;background-color:gold;border-radius:50%;height:4px;position:absolute;width:4px}@keyframes sparkle-animation{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.5)}}
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