:root{--primary-color: #8c2d19;--primary-hover: #702212;--bg-color: #f7f3eb;--card-bg: #ffffff;--text-main: #2c2520;--text-muted: #6b5e54;--gold: #d97706;--green: #15803d;--red: #b91c1c;--border-color: #e5dec9;--shadow: 0 8px 30px rgba(140, 45, 25, .06)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-image:radial-gradient(rgba(140,45,25,.03) 1px,transparent 0);background-size:24px 24px}.app-container{max-width:800px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column}.game-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background:var(--card-bg);border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--border-color);margin-bottom:20px}.header-brand{display:flex;align-items:center;gap:12px}.brand-logo{font-size:32px}.header-brand h1{font-size:20px;color:var(--primary-color);font-weight:800}.subtitle{font-size:12px;color:var(--text-muted)}.header-actions{display:flex;align-items:center;gap:12px}.score-badge{display:flex;align-items:center;gap:6px;background:#fef3c7;color:#92400e;padding:8px 16px;border-radius:12px;font-weight:700}.btn-primary{background:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:12px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{background:#fff;color:var(--primary-color);border:1.5px solid var(--primary-color);padding:8px 16px;border-radius:12px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s}.btn-secondary:hover{background:#fff5f2}.btn-tool{background:#fdfbf7;border:1px solid var(--border-color);padding:8px 14px;border-radius:10px;font-size:13px;cursor:pointer;display:flex;align-items:center;gap:6px;color:var(--text-muted);transition:all .2s}.btn-tool:hover{background:var(--bg-color);color:var(--primary-color)}.welcome-card{background:var(--card-bg);border-radius:20px;padding:30px;box-shadow:var(--shadow);border:1px solid var(--border-color)}.welcome-hero{text-align:center;margin-bottom:30px}.hero-emblem{width:70px;height:70px;background:var(--primary-color);color:#fff;font-size:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;margin:0 auto 15px;box-shadow:0 4px 15px #8c2d194d}.welcome-hero h2{font-size:24px;color:var(--primary-color);margin-bottom:10px}.welcome-hero p{color:var(--text-muted);font-size:15px;line-height:1.6;max-width:500px;margin:0 auto}.poem-selector h3{font-size:16px;color:var(--text-main);margin-bottom:15px}.poem-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:15px;margin-bottom:30px}.poem-select-card{background:#fdfcf9;border:1px solid var(--border-color);border-radius:14px;padding:16px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:all .2s}.poem-select-card:hover{transform:translateY(-3px);border-color:var(--primary-color);box-shadow:0 6px 15px #8c2d1914}.poem-info h4{font-size:16px;color:var(--text-main);margin:4px 0}.poem-info p{font-size:13px;color:var(--text-muted)}.poem-badge{font-size:10px;background:#f5efe6;color:var(--primary-color);padding:2px 6px;border-radius:4px;font-weight:700}.btn-play-mini{width:32px;height:32px;border-radius:50%;background:var(--primary-color);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer}.ai-generator-box{background:linear-gradient(135deg,#fefaf4,#fbf3e6);border:1px dashed var(--gold);border-radius:16px;padding:20px}.ai-title{display:flex;align-items:center;gap:8px;color:var(--gold);margin-bottom:8px}.ai-desc{font-size:13px;color:var(--text-muted);margin-bottom:15px}.ai-input-group{display:flex;gap:10px}.ai-input-group input{flex:1;padding:12px 16px;border:1.5px solid var(--border-color);border-radius:12px;outline:none;font-size:14px;background:#fff}.ai-input-group input:focus{border-color:var(--gold)}.game-play-area{background:var(--card-bg);border-radius:20px;padding:25px;box-shadow:var(--shadow);border:1px solid var(--border-color)}.play-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #f3ece0;padding-bottom:15px;margin-bottom:20px}.tag{background:var(--bg-color);color:var(--primary-color);padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700}.poem-meta h2{font-size:22px;color:var(--primary-color);margin-top:6px}.progress-indicator{text-align:right;font-size:13px;color:var(--text-muted)}.progress-bar-bg{width:120px;height:6px;background:#eee;border-radius:3px;margin-top:6px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--primary-color);border-radius:3px;transition:width .3s ease}.poem-preview-board{background:#fdfbf7;border:1px solid var(--border-color);border-radius:12px;padding:20px;text-align:center;margin-bottom:25px}.line-completed{font-size:18px;color:var(--text-muted);text-decoration:line-through;opacity:.6;margin-bottom:8px}.line-current{font-size:24px;font-weight:700;color:var(--primary-color);margin:12px 0;display:flex;justify-content:center;gap:8px}.char-placeholder{display:inline-block;width:36px;height:36px;border-bottom:3px solid var(--primary-color);color:#ccc}.line-locked{font-size:18px;color:#ddd;letter-spacing:4px;margin-top:8px}.klotski-container{background:#f5efe6;border-radius:16px;padding:20px;margin-bottom:25px}.instruction-tip{text-align:center;font-size:13px;color:var(--text-muted);margin-bottom:15px}.klotski-grid{display:flex;justify-content:center;gap:10px;padding:10px;background:#e6dcce;border-radius:12px;box-shadow:inset 0 2px 8px #0000000d}.klotski-tile{width:64px;height:64px;background:#fffdfa;border:2px solid #dcd3c1;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:var(--text-main);cursor:pointer;box-shadow:0 4px 6px #0000000d;transition:all .15s ease}.tile-movable{border-color:var(--gold);background:#fffbeb;animation:pulse-border 1.5s infinite}.tile-movable:hover{transform:scale(1.05);box-shadow:0 6px 12px #d9770626}.tile-empty{background:transparent;border:2px dashed #ccc;box-shadow:none;cursor:default}@keyframes pulse-border{0%{border-color:#dcd3c1}50%{border-color:var(--gold)}to{border-color:#dcd3c1}}.helper-toolbar{display:flex;justify-content:center;gap:10px;margin-bottom:25px}.ai-showcase-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:#fdfbf7;border:1px solid var(--border-color);border-radius:16px;padding:20px;margin-top:20px}@media (max-width: 600px){.ai-showcase-panel{grid-template-columns:1fr}}.ai-image-wrapper{text-align:center}.ai-image-wrapper img{width:100%;max-height:200px;object-fit:cover;border-radius:12px;border:1px solid var(--border-color)}.image-caption{font-size:12px;color:var(--text-muted);display:block;margin-top:6px}.ai-explanation-box h4{font-size:14px;color:var(--gold);margin-bottom:8px}.ai-explanation-box p{font-size:13px;line-height:1.6;color:var(--text-muted)}.quiz-card{background:var(--card-bg);border-radius:20px;padding:30px;box-shadow:var(--shadow);border:1px solid var(--border-color)}.quiz-badge{background:#fef3c7;color:#b45309;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700}.quiz-header h3{margin-top:10px;font-size:16px;color:var(--text-muted)}.quiz-question{font-size:20px;color:var(--text-main);font-weight:700;margin:15px 0 25px}.quiz-options{display:flex;flex-direction:column;gap:12px}.option-btn{display:flex;align-items:center;padding:16px 20px;border:1.5px solid var(--border-color);border-radius:14px;background:#fff;cursor:pointer;text-align:left;font-size:16px;transition:all .2s;position:relative}.option-btn:hover{border-color:var(--primary-color);background:#fffbfb}.option-letter{width:28px;height:28px;background:var(--bg-color);color:var(--primary-color);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin-right:12px}.option-correct{border-color:var(--green)!important;background:#f0fdf4!important;color:var(--green)}.option-correct .option-letter{background:var(--green);color:#fff}.option-wrong{border-color:var(--red)!important;background:#fef2f2!important;color:var(--red)}.option-wrong .option-letter{background:var(--red);color:#fff}.option-disabled{opacity:.6;cursor:not-allowed}.icon-feedback{position:absolute;right:20px}.quiz-feedback-panel{margin-top:25px;padding:20px;background:#fdfbf7;border-radius:14px;border:1px solid var(--border-color)}.quiz-desc{font-size:14px;color:var(--text-muted);line-height:1.6;margin-top:8px}.summary-card{background:var(--card-bg);border-radius:20px;padding:35px;box-shadow:var(--shadow);border:1px solid var(--border-color);text-align:center}.trophy-icon{font-size:64px;margin-bottom:15px}.summary-hero h2{color:var(--primary-color);font-size:26px;margin-bottom:8px}.stats-row{display:flex;justify-content:center;gap:20px;margin:30px 0}.stat-box{background:#fdfcf9;border:1px solid var(--border-color);border-radius:14px;padding:15px 25px;min-width:120px}.stat-val{display:block;font-size:24px;font-weight:700;color:var(--primary-color)}.stat-lbl{font-size:12px;color:var(--text-muted)}.learning-chart-box{background:#fdfbf7;border:1px solid var(--border-color);border-radius:16px;padding:20px;margin-bottom:30px}.chart-header{display:flex;align-items:center;gap:8px;margin-bottom:15px}.svg-chart-container{width:100%;overflow-x:auto}.svg-chart{width:100%;height:auto;max-height:200px}.chart-tip{font-size:12px;color:var(--text-muted);margin-top:10px}.summary-actions{display:flex;justify-content:center;gap:15px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal-content{background:var(--card-bg);border-radius:20px;width:100%;max-width:600px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 10px 40px #0003;border:1px solid var(--border-color)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border-color)}.modal-title{display:flex;align-items:center;gap:10px}.btn-close{background:none;border:none;font-size:20px;cursor:pointer;color:var(--text-muted)}.modal-body{padding:20px;overflow-y:auto;flex:1}.empty-state{text-align:center;padding:40px 20px}.empty-icon{font-size:48px;display:block;margin-bottom:15px}.wrong-list{display:flex;flex-direction:column;gap:15px}.wrong-item{background:#fdfbf7;border:1px solid var(--border-color);border-radius:12px;padding:16px}.wrong-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.wrong-poem-tag{font-weight:700;color:var(--primary-color)}.btn-delete{background:none;border:none;color:#999;cursor:pointer}.btn-delete:hover{color:var(--red)}.wrong-q{font-weight:700;margin-bottom:10px}.wrong-opts{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}.wrong-opt-badge{padding:6px 12px;border-radius:6px;font-size:13px;background:#f5f5f5}.opt-correct-badge{background:#e6f4ea;color:var(--green);font-weight:700}.opt-wrong-badge{background:#fce8e6;color:var(--red)}.wrong-desc{font-size:12px;color:var(--text-muted);background:#f5efe6;padding:8px 12px;border-radius:6px}.modal-footer{padding:15px 20px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end}.card-fade-in{animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.mt-4{margin-top:16px}.text-gold{color:var(--gold)}.text-red{color:var(--red)}.text-green{color:var(--green)}.font-bold{font-weight:700}