@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--color-primary:#4f46e5;--color-primary-light:#818cf8;--color-primary-dark:#3730a3;--color-primary-bg:#4f46e514;--color-success:#10b981;--color-success-light:#34d399;--color-success-bg:#10b9811a;--color-error:#ef4444;--color-error-light:#f87171;--color-error-bg:#ef44441a;--color-warning:#f59e0b;--color-warning-bg:#f59e0b1a;--color-bg:#f8fafc;--color-surface:#fff;--color-surface-hover:#f1f5f9;--color-border:#e2e8f0;--color-text:#0f172a;--color-text-secondary:#64748b;--color-text-tertiary:#94a3b8;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #00000012, 0 2px 4px -1px #0000000a;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -2px #0000000a;--shadow-xl:0 20px 25px -5px #0000001a, 0 10px 10px -5px #0000000a;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--font-family:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs:12px;--font-size-sm:14px;--font-size-md:16px;--font-size-lg:20px;--font-size-xl:24px;--font-size-2xl:32px;--font-size-3xl:40px;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.35s ease;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-left:env(safe-area-inset-left,0px);--safe-right:env(safe-area-inset-right,0px);--bottom-nav-height:calc(70px + var(--safe-bottom))}[data-theme=dark]{--color-primary:#818cf8;--color-primary-light:#a5b4fc;--color-primary-dark:#6366f1;--color-primary-bg:#818cf81f;--color-bg:#0f172a;--color-surface:#1e293b;--color-surface-hover:#334155;--color-border:#334155;--color-text:#f1f5f9;--color-text-secondary:#94a3b8;--color-text-tertiary:#64748b;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0006;--shadow-lg:0 10px 15px -3px #00000080}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;height:100%;font-size:16px}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;height:100%;min-height:100%;line-height:1.6;overflow:hidden}#root{flex-direction:column;height:100dvh;min-height:0;display:flex;overflow:hidden}.app-container{width:100%;max-width:1200px;min-height:0;padding:var(--space-md);padding-bottom:var(--space-lg);overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;margin:0 auto;display:flex;overflow:hidden auto}.page-header{padding:var(--space-lg) 0 var(--space-md)}.page-title{font-size:var(--font-size-2xl);letter-spacing:-.02em;color:var(--color-text);font-weight:800}.page-subtitle{font-size:var(--font-size-md);color:var(--color-text-secondary);margin-top:var(--space-xs)}.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);transition:transform var(--transition-normal), box-shadow var(--transition-normal)}.card:hover{box-shadow:var(--shadow-md)}.card-interactive{cursor:pointer}.card-interactive:active{transform:scale(.98)}.btn{justify-content:center;align-items:center;gap:var(--space-sm);font-family:var(--font-family);font-size:var(--font-size-md);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none;border:none;min-height:48px;padding:14px 28px;font-weight:600;display:inline-flex}.btn:active{transform:scale(.96)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-primary-bg);color:var(--color-primary)}.btn-secondary:hover{background:#4f46e526}.btn-success{background:var(--color-success);color:#fff}.btn-danger{background:var(--color-error);color:#fff}.btn-ghost{color:var(--color-text-secondary);background:0 0}.btn-ghost:hover{background:var(--color-surface-hover)}.btn-lg{font-size:var(--font-size-lg);border-radius:var(--radius-lg);min-height:56px;padding:18px 36px}.btn-sm{font-size:var(--font-size-sm);min-height:36px;padding:8px 16px}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.input-group{gap:var(--space-xs);flex-direction:column;display:flex}.input-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.input{width:100%;font-family:var(--font-family);font-size:var(--font-size-md);background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);transition:border-color var(--transition-fast);min-height:48px;padding:14px 16px}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg);outline:none}.input::placeholder{color:var(--color-text-tertiary)}textarea.input{resize:vertical;min-height:80px}.bottom-nav{flex:0 0 var(--bottom-nav-height);width:100%;min-height:var(--bottom-nav-height);background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--space-sm) 0;padding-bottom:calc(var(--space-sm) + var(--safe-bottom));z-index:100;-webkit-backdrop-filter:blur(20px);background:#ffffffd9;justify-content:space-around;display:flex;position:relative}.above-bottom-nav{bottom:var(--bottom-nav-height)!important}[data-theme=dark] .bottom-nav{background:#1e293be6}.nav-item{padding:var(--space-xs) var(--space-md);font-size:var(--font-size-xs);color:var(--color-text-tertiary);transition:color var(--transition-fast);cursor:pointer;font-family:var(--font-family);-webkit-user-select:none;user-select:none;background:0 0;border:none;flex-direction:column;align-items:center;gap:2px;text-decoration:none;display:flex}.nav-item.active{color:var(--color-primary)}.nav-icon{font-size:24px;line-height:1}.quiz-card{background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--space-2xl);box-shadow:var(--shadow-lg);border:1px solid var(--color-border);text-align:center;width:100%;max-width:600px;margin:0 auto}.quiz-word{font-size:var(--font-size-3xl);letter-spacing:-.02em;margin-bottom:var(--space-sm);font-weight:800}.quiz-phonetic{font-size:var(--font-size-lg);color:var(--color-text-secondary);margin-bottom:var(--space-xl)}.quiz-options{gap:var(--space-md);grid-template-columns:1fr 1fr;display:grid}.quiz-option{padding:var(--space-lg);background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-lg);font-family:var(--font-family);cursor:pointer;transition:all var(--transition-fast);color:var(--color-text)}.quiz-option:hover{border-color:var(--color-primary);background:var(--color-primary-bg)}.quiz-option:active{transform:scale(.97)}.quiz-option.correct{border-color:var(--color-success);background:var(--color-success-bg);color:var(--color-success);animation:.4s popCorrect}.quiz-option.wrong{border-color:var(--color-error);background:var(--color-error-bg);color:var(--color-error);animation:.4s shake}.progress-bar-container{background:var(--color-border);border-radius:var(--radius-full);width:100%;height:6px;margin-bottom:var(--space-lg);overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--color-primary), var(--color-primary-light));border-radius:var(--radius-full);height:100%;transition:width var(--transition-normal)}.stats-grid{gap:var(--space-md);grid-template-columns:repeat(auto-fit,minmax(140px,1fr));display:grid}.stat-card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center;border:1px solid var(--color-border)}.stat-value{font-size:var(--font-size-2xl);color:var(--color-primary);font-weight:800}.stat-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--space-xs)}.community-card{margin-bottom:var(--space-lg);padding:0;overflow:hidden}.community-header{justify-content:space-between;align-items:flex-start;gap:var(--space-md);padding:var(--space-lg);border-bottom:1px 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0;grid-template-columns:minmax(150px,1fr) minmax(300px,1.5fr) auto;display:grid}.community-user.is-self{background:linear-gradient(90deg, transparent, var(--color-primary-bg), transparent)}.community-person{align-items:center;gap:10px;min-width:0;display:flex}.community-avatar{color:#fff;box-shadow:var(--shadow-sm);background-position:50%;background-size:cover;border-radius:50%;flex:none;justify-content:center;align-items:center;font-weight:800;display:flex}.community-name{overflow-wrap:anywhere;font-weight:800}.community-name span{border-radius:var(--radius-full);color:var(--color-primary);background:var(--color-primary-bg);vertical-align:2px;margin-left:4px;padding:1px 6px;font-size:10px;display:inline-block}.community-status{color:var(--color-text-tertiary);font-size:var(--font-size-xs)}.community-metrics{grid-template-columns:repeat(3,minmax(82px,1fr));gap:6px;display:grid}.community-metrics>div{border-radius:var(--radius-sm);text-align:center;background:var(--color-surface-hover);min-width:0;padding:8px}.community-metrics strong,.community-metrics span{display:block}.community-metrics strong{color:var(--color-primary);font-size:var(--font-size-sm);overflow-wrap:anywhere}.community-metrics span{color:var(--color-text-secondary);margin-top:1px;font-size:10px}.community-cheer-button{white-space:nowrap}.encouragement-composer{margin:0 0 var(--space-md);padding:var(--space-md);border-radius:var(--radius-md);background:var(--color-primary-bg);border:1px solid #4f46e540}.encouragement-composer-title{margin-bottom:var(--space-sm);font-weight:800}.encouragement-phrases{margin-bottom:var(--space-sm);scrollbar-width:thin;gap:6px;padding-bottom:2px;display:flex;overflow-x:auto}.encouragement-phrase{border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-surface);max-width:220px;color:var(--color-text-secondary);font:inherit;font-size:var(--font-size-xs);cursor:pointer;flex:none;padding:7px 10px}.encouragement-phrase:hover{border-color:var(--color-primary);color:var(--color-primary)}.encouragement-input{background:var(--color-surface);min-height:76px}.encouragement-composer-actions{justify-content:flex-end;align-items:center;gap:var(--space-sm);margin-top:var(--space-sm);display:flex}.encouragement-composer-actions>span{color:var(--color-text-tertiary);font-size:var(--font-size-xs);margin-right:auto}.encouragement-inbox{padding:var(--space-lg);border-top:1px solid var(--color-border);background:var(--color-surface-hover)}.encouragement-inbox-header{justify-content:space-between;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md);display:flex}.encouragement-inbox-header span{color:var(--color-text-tertiary);font-size:var(--font-size-xs)}.encouragement-empty{padding:var(--space-lg);border:1px dashed var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);text-align:center;font-size:var(--font-size-sm)}.encouragement-thread{padding:var(--space-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface)}.encouragement-thread+.encouragement-thread{margin-top:var(--space-sm)}.encouragement-thread-title,.encouragement-reply>div{justify-content:space-between;align-items:center;gap:var(--space-sm);display:flex}.encouragement-thread-title{color:var(--color-text-secondary);font-size:var(--font-size-xs)}.encouragement-thread time{color:var(--color-text-tertiary);white-space:nowrap;font-size:10px}.encouragement-bubble{border-radius:4px var(--radius-md) var(--radius-md) var(--radius-md);background:var(--color-surface-hover);overflow-wrap:anywhere;width:fit-content;max-width:88%;margin-top:6px;padding:9px 12px}.encouragement-bubble.from-me{border-radius:var(--radius-md) 4px var(--radius-md) var(--radius-md);color:var(--color-primary-dark);background:var(--color-primary-bg);margin-left:auto}[data-theme=dark] .encouragement-bubble.from-me{color:var(--color-primary-light)}.encouragement-reply{border-left:3px solid var(--color-border);max-width:88%;color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:8px;padding:8px 10px}.encouragement-reply.from-me{border-left:0;border-right:3px solid var(--color-primary-light);text-align:right;margin-left:auto}.encouragement-reply p{color:var(--color-text);overflow-wrap:anywhere;margin-top:2px}.encouragement-reply-button{color:var(--color-primary);margin:8px 0 0 auto;display:flex}.encouragement-thread .encouragement-composer{margin:var(--space-sm) 0 0}.badge{font-size:var(--font-size-xs);border-radius:var(--radius-full);background:var(--color-primary-bg);color:var(--color-primary);align-items:center;padding:4px 10px;font-weight:600;display:inline-flex}.badge-success{background:var(--color-success-bg);color:var(--color-success)}.badge-warning{background:var(--color-warning-bg);color:var(--color-warning)}.empty-state{padding:var(--space-2xl);text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:300px;display:flex}.empty-state-icon{margin-bottom:var(--space-lg);font-size:64px}.empty-state-title{font-size:var(--font-size-xl);margin-bottom:var(--space-sm);font-weight:700}.empty-state-text{color:var(--color-text-secondary);margin-bottom:var(--space-lg);max-width:400px}.spelling-input{gap:var(--space-sm);flex-wrap:wrap;justify-content:center;display:flex}.spelling-char{width:48px;height:56px;font-size:var(--font-size-xl);text-transform:lowercase;border:2px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);font-weight:700;font-family:var(--font-family);justify-content:center;align-items:center;display:flex}.spelling-char.filled{border-color:var(--color-primary);color:var(--color-primary)}.spelling-char.correct{border-color:var(--color-success);color:var(--color-success);background:var(--color-success-bg)}.spelling-char.wrong{border-color:var(--color-error);color:var(--color-error);background:var(--color-error-bg)}.record-btn{background:var(--color-primary);color:#fff;cursor:pointer;width:80px;height:80px;transition:all var(--transition-normal);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:32px;display:flex;position:relative}.record-btn.recording{background:var(--color-error);animation:1.5s ease-in-out infinite pulse}.record-btn:active{transform:scale(.9)}.score-circle{width:120px;height:120px;font-size:var(--font-size-2xl);margin:var(--space-lg) auto;border:4px solid;border-radius:50%;justify-content:center;align-items:center;font-weight:800;display:flex}.score-excellent{color:var(--color-success);border-color:var(--color-success);background:var(--color-success-bg)}.score-good{color:var(--color-primary);border-color:var(--color-primary);background:var(--color-primary-bg)}.score-poor{color:var(--color-error);border-color:var(--color-error);background:var(--color-error-bg)}.modal-overlay{z-index:200;padding:var(--space-lg);background:#00000080;justify-content:center;align-items:center;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-content{background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:500px;max-height:80vh;animation:.3s slideUp;overflow-y:auto}.modal-title{font-size:var(--font-size-xl);margin-bottom:var(--space-lg);font-weight:700}.toast{top:calc(var(--space-lg) + var(--safe-top));padding:var(--space-md) var(--space-xl);border-radius:var(--radius-full);z-index:300;font-weight:600;animation:.3s slideDown,.3s 2.5s forwards fadeOut;position:fixed;left:50%;transform:translate(-50%)}.toast-success{background:var(--color-success);color:#fff}.toast-error{background:var(--color-error);color:#fff}.ocr-preview{background:var(--color-surface);border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-xl);text-align:center;cursor:pointer;min-height:200px;transition:border-color var(--transition-fast);flex-direction:column;justify-content:center;align-items:center;display:flex}.ocr-preview:hover{border-color:var(--color-primary)}.ocr-preview img{border-radius:var(--radius-md);object-fit:contain;max-width:100%;max-height:300px}.ocr-word-item{align-items:center;gap:var(--space-md);padding:var(--space-md);border-bottom:1px solid var(--color-border);display:flex}.ocr-word-item:last-child{border-bottom:none}.ocr-word-item 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feedFloat{0%{opacity:1;transform:translateY(0)scale(1)}50%{opacity:.8;transform:translateY(-60px)scale(.8)}to{opacity:0;transform:translateY(-100px)scale(.4)}}@keyframes petBreathe{0%,to{transform:scale(1)translateY(0)}50%{transform:scale(1.03,.95)translateY(3px)}}@keyframes petJump{0%{transform:scale(1.2,.8)translateY(0)}20%{transform:scale(.8,1.25)translateY(-80px)rotate(-15deg)}50%{transform:scale(1)translateY(-100px)rotate(15deg)}80%{transform:scale(.9,1.1)translateY(-15px)rotate(-5deg)}to{transform:scale(1.2,.8)translateY(0)}}@keyframes petWalk{0%{transform:scale(1)translateY(0)rotate(0)}25%{transform:scale(.9,1.1)translateY(-25px)rotate(-15deg)}50%{transform:scale(1.05,.95)translateY(0)rotate(0)}75%{transform:scale(.9,1.1)translateY(-25px)rotate(15deg)}to{transform:scale(1)translateY(0)rotate(0)}}@keyframes playSprite{to{transform:translate(-100%)}}@keyframes flyIntoMouth{0%{opacity:0;transform:translate(50px)scale(1)rotate(10deg)}10%{opacity:1;transform:translate(40px,-20px)scale(1.2)rotate(0)}80%{opacity:1;transform:translate(-10px,-10px)scale(.6)rotate(-20deg)}to{opacity:0;transform:translate(-20px)scale(0)rotate(-40deg)}}@keyframes bubblePop{0%{opacity:0;transform:scale(.6)}60%{transform:scale(1.1)}to{opacity:1;transform:scale(1)}}@keyframes floatUp{0%{opacity:0;transform:translateY(0)scale(.6)rotate(-10deg)}20%{opacity:1;transform:translateY(-16px)scale(.7)rotate(10deg)}to{opacity:0;transform:translateY(-80px)scale(1.2)rotate(-20deg)}}@keyframes shadowBreathe{0%,to{opacity:.1;transform:scale(1)}50%{opacity:.05;transform:scale(1.1)}}@keyframes shadowShrink{0%,to{opacity:.1;transform:scale(1)}50%{opacity:.15;transform:scale(.8)}}@media (width>=768px){.quiz-options{max-width:500px;margin:0 auto}.app-container{padding:var(--space-xl);padding-bottom:var(--space-xl)}.stats-grid{grid-template-columns:repeat(4,1fr)}}@media 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