:root{--bg-color:#FDFBF7;--text-color:#4A4A4A;--primary-color:#8D6E63;--accent-color:#FF7043;--grid-border:#D7CCC8;--grid-filled-border:#8D6E63;--key-bg:#EFEBE9;--key-text:#3E2723;--color-correct:#81C784;--color-present:#FFF176;--color-absent:#B0BEC5;--color-correct-text:#1B5E20;--color-present-text:#F57F17;--color-absent-text:#FFFFFF;--font-heading:'Merriweather',serif;--font-body:'Noto Sans JP',sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);font-family:var(--font-body);display:flex;flex-direction:column;align-items:center;min-height:100vh;min-height:100dvh}.app-container{width:100%;max-width:500px;flex-grow:1;display:flex;flex-direction:column;padding:10px;position:relative;margin:0 auto;overflow:hidden}header{display:flex;align-items:center;padding:5px 10px 10px 10px;border-bottom:2px solid var(--grid-border);position:relative;margin-bottom:15px;flex-shrink:0;z-index:10;background-color:var(--bg-color)}.title-container{display:flex;flex-direction:column;align-items:center;position:absolute;left:50%;transform:translateX(-50%);width:max-content;pointer-events:none}.title-kana{font-size:.8rem;color:var(--primary-color);margin-bottom:-5px;font-family:var(--font-body)}h1{font-family:var(--font-heading);color:var(--primary-color);font-size:1.5rem;letter-spacing:1px}.header-controls{display:flex;gap:15px;align-items:center;margin-left:auto}.stats-icon{font-size:1.5rem;cursor:pointer;background:0 0;border:none;color:var(--primary-color);padding:0}.icon-btn{font-size:1.2rem;cursor:pointer;background:var(--primary-color);color:#fff;border:none;border-radius:50%;width:30px;height:30px;display:flex;justify-content:center;align-items:center;line-height:1}.next-btn{font-size:.9rem;cursor:pointer;background:var(--accent-color);color:#fff;border:none;border-radius:20px;padding:5px 12px;font-weight:700;display:flex;align-items:center;gap:5px;animation:pulse 2s infinite;z-index:20}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}100%{transform:scale(1)}}.icon-btn:hover,.next-btn:hover{background-color:#6d4c41}main{overflow-y:auto;width:100%;padding-top:15px}.hint-box{background-color:#fff;border:2px dashed var(--primary-color);border-radius:10px;padding:15px;margin:10px auto 20px auto}.hint-label{display:inline-block;background-color:var(--primary-color);color:#fff;padding:2px 12px;font-size:.9rem;font-weight:700;border-radius:15px;margin-bottom:10px}#hint-text{font-size:1.2rem;font-weight:700}.grid-container{display:grid;gap:5px;margin:0 auto 20px auto;width:100%;max-width:400px;position:relative;z-index:2}.tile.active-row{border-color:var(--accent-color);box-shadow:0 0 5px rgba(255,112,67,.5);background-color:#fff8e1}.tile{width:100%;aspect-ratio:1/1;border:2px solid var(--grid-border);display:flex;justify-content:center;align-items:center;font-size:clamp(1.2rem, 4vw, 2rem);font-weight:700;text-transform:uppercase;background-color:#fff;transition:all .3s ease}.tile[data-state=filled]{border-color:var(--grid-filled-border);animation:pop .1s}.tile[data-state=correct]{background-color:var(--color-correct);border-color:var(--color-correct);color:var(--color-correct-text)}.tile[data-state=present]{background-color:var(--color-present);border-color:var(--color-present);color:var(--color-present-text)}.tile[data-state=absent]{background-color:var(--color-absent);border-color:var(--color-absent);color:var(--color-absent-text)}.tile.flip{animation:flip .5s ease forwards}@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.1)}100%{transform:scale(1)}}@keyframes flip{0%{transform:rotateX(0)}50%{transform:rotateX(90deg)}100%{transform:rotateX(0)}}#message-container{height:30px;margin-bottom:10px;text-align:center;font-weight:700;color:var(--accent-color);min-height:24px}.character-area{display:none}#character-img{height:90px;transition:transform .3s}.character-happy{animation:bounce .4s infinite alternate}.character-sad{filter:grayscale(.8);transform:rotate(-10deg)}@keyframes bounce{from{transform:translateY(0)}to{transform:translateY(-5px)}}.bubble{position:absolute;top:0;right:15%;background-color:#fff;border:1px solid var(--text-color);padding:5px 10px;border-radius:10px;font-size:.9rem;white-space:nowrap}#keyboard-container{width:100%;padding-bottom:max(20px,env(safe-area-inset-bottom));flex-shrink:0;max-width:500px;margin:0 auto}.keyboard-row{display:flex;justify-content:center;margin-bottom:8px;width:100%}.key{background-color:var(--key-bg);color:var(--key-text);font-weight:700;border-radius:6px;border:none;margin:0 4px;height:55px;width:13%;display:flex;justify-content:center;align-items:center;cursor:pointer;user-select:none;font-size:1.4rem;box-shadow:0 4px 0 rgba(141,110,99,.2);transition:transform .1s}.key:active{box-shadow:0 1px 0 rgba(141,110,99,.2);transform:translateY(3px)}.key[data-key=Backspace],.key[data-key=Enter]{flex-grow:1;font-size:1rem;background-color:#d7ccc8}.key[data-state=correct]{background-color:var(--color-correct);color:var(--color-correct-text)}.key[data-state=present]{background-color:var(--color-present);color:var(--color-present-text)}.key[data-state=absent]{background-color:var(--color-absent);color:var(--color-absent-text);opacity:.7}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background-color:var(--bg-color);padding:20px;border-radius:10px;width:85%;max-width:400px;text-align:center;box-shadow:0 4px 10px rgba(0,0,0,.2);position:relative;border:2px solid var(--primary-color)}.close-btn{position:absolute;top:10px;right:15px;font-size:1.5rem;cursor:pointer;line-height:1}.stats-grid{display:flex;justify-content:center;flex-wrap:wrap;gap:15px;margin:15px 0}.stat-item{display:flex;flex-direction:column;min-width:60px}.result-box{margin:10px 0;padding:10px;background-color:#f1f8e9;border-radius:8px}.result-word-row{display:flex;align-items:center;justify-content:center;gap:10px}#result-word{font-size:1.8rem;font-weight:700;color:var(--primary-color);text-transform:uppercase;font-family:var(--font-heading)}.speaker-btn{background:0 0;border:2px solid var(--primary-color);border-radius:50%;width:30px;height:30px;cursor:pointer;font-size:1.2rem;display:flex;justify-content:center;align-items:center;color:var(--primary-color);transition:all .2s}.speaker-btn:hover{background-color:var(--primary-color);color:#fff}.stat-item span{font-size:1.4rem;font-weight:700}.stat-item label{font-size:.7rem;text-transform:uppercase}.primary-btn{background-color:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:5px;font-size:1rem;cursor:pointer;font-family:var(--font-heading);margin-top:10px}.primary-btn:hover{background-color:#6d4c41}.help-content{text-align:left;font-size:.9rem;line-height:1.5}.help-content p{margin-bottom:10px}.example-tiles{margin-top:15px}.example-row{display:flex;align-items:center;margin-bottom:10px}.tile.small{width:30px;height:30px;font-size:1rem;margin-right:10px;flex-shrink:0}.hidden{display:none!important}@media (max-width:400px){.app-container{padding:5px}h1{font-size:1.4rem}#keyboard-container{margin-bottom:5px}.key{height:45px;font-size:.9rem;margin:0 1px}.key[data-key=Backspace],.key[data-key=Enter]{font-size:.7rem}.character-area{height:80px}#character-img{height:70px}}@media (max-height:600px){header{margin-bottom:5px;padding:5px 0}.hint-box{padding:5px;margin-bottom:10px}.tile{font-size:1rem}.character-area{height:60px}#character-img{height:55px}.key{height:35px}}