*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #7C6FD4;--primary-light: #A99BEB;--primary-dark: #5E52B5;--accent: #F2A7C3;--accent-light: #FBDBE8;--warm: #F9D9A0;--bg: #FBF8F4;--surface: #FFFFFF;--surface-warm: #FFF9F2;--text: #3D3551;--text-secondary: #8E86A0;--border: #EDE8F5;--radius: 16px;--radius-lg: 24px;--shadow: 0 2px 12px rgba(124, 111, 212, .06);--shadow-md: 0 4px 20px rgba(124, 111, 212, .1);--shadow-lg: 0 8px 32px rgba(124, 111, 212, .14)}body{font-family:Segoe UI,-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;background:var(--bg);background-image:radial-gradient(ellipse at 20% 0%,rgba(124,111,212,.06) 0%,transparent 60%),radial-gradient(ellipse at 80% 100%,rgba(242,167,195,.06) 0%,transparent 60%);color:var(--text);line-height:1.7;min-height:100vh;letter-spacing:.01em}.app{max-width:680px;margin:0 auto;padding:0 20px;min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;padding:40px 0 12px}.header-title{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg,var(--primary) 0%,#D4A0E8 50%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.header-icon{-webkit-text-fill-color:initial;margin-right:6px;font-size:1.8rem}.header-subtitle{color:var(--text-secondary);font-size:.9rem;margin-top:6px;font-weight:400;letter-spacing:.04em}.user-bar{display:flex;align-items:center;justify-content:space-between;margin:4px 0 16px;gap:12px}.user-info{display:flex;align-items:center;gap:8px;font-size:.82rem}.user-avatar{font-size:1.1rem}.user-name{font-weight:600;color:var(--text)}.login-btn{padding:6px 16px;border:1.5px solid var(--primary-light);border-radius:20px;background:linear-gradient(135deg,#fefbff,#f5f1ff);font-size:.82rem;color:var(--primary);cursor:pointer;font-weight:600;transition:all .3s ease;white-space:nowrap}.login-btn:hover{background:linear-gradient(135deg,var(--primary) 0%,#9B8FE8 100%);color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px #7c6fd433}.logout-btn{padding:4px 12px;border:1px solid var(--border);border-radius:16px;background:none;font-size:.72rem;color:var(--text-secondary);cursor:pointer;transition:all .3s ease}.logout-btn:hover{border-color:var(--accent);color:var(--accent)}.auth-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#3d355180;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.auth-modal{background:var(--surface);border-radius:var(--radius-lg);padding:32px;width:100%;max-width:400px;box-shadow:var(--shadow-lg);position:relative;animation:modalIn .3s ease}@keyframes modalIn{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.auth-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:1.2rem;color:var(--text-secondary);cursor:pointer;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .2s}.auth-close:hover{background:var(--bg);color:var(--text)}.auth-title{font-size:1.3rem;text-align:center;margin-bottom:24px;color:var(--text)}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-submit{width:100%;padding:13px;font-size:.95rem;margin-top:4px}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-error{padding:10px 14px;background:#fff0f0;border:1px solid #FFD0D0;border-radius:10px;color:#d04040;font-size:.82rem;margin-bottom:8px}.auth-success{padding:10px 14px;background:#f0fff4;border:1px solid #C0F0D0;border-radius:10px;color:#208040;font-size:.82rem;margin-bottom:8px}.auth-switch{text-align:center;margin-top:16px;font-size:.82rem;color:var(--text-secondary)}.auth-switch button{background:none;border:none;color:var(--primary);font-weight:600;cursor:pointer;font-size:.82rem;text-decoration:underline}.auth-switch button:hover{color:var(--primary-dark)}.lang-switcher{display:flex;align-items:center;gap:8px}.lang-icon{font-size:1.1rem}.lang-select{padding:6px 14px;border:1.5px solid var(--border);border-radius:20px;background:var(--surface);font-size:.82rem;color:var(--text);cursor:pointer;font-family:inherit;transition:all .3s ease;box-shadow:var(--shadow)}.lang-select:hover{border-color:var(--primary-light)}.lang-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #7c6fd41f}[dir=rtl] .chain-children{margin-left:0;margin-right:20px;padding-left:0;padding-right:16px;border-left:none;border-right:2px dashed var(--border)}[dir=rtl] .kindness-card{border-left:none;border-right:3px solid var(--cat-color, var(--primary))}[dir=rtl] .kindness-card:hover{transform:translateY(-2px)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0 0 16px}.stat-card{background:var(--surface);border-radius:var(--radius);padding:18px 8px;text-align:center;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);transition:all .3s ease}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.stat-number{font-size:1.7rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:.7rem;color:var(--text-secondary);font-weight:500;letter-spacing:.04em}.ranking{background:linear-gradient(135deg,var(--surface) 0%,var(--surface-warm) 100%);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:14px;border:1px solid var(--border)}.ranking-title{font-size:.95rem;margin-bottom:12px;color:var(--text);font-weight:700}.ranking-list{display:flex;flex-direction:column;gap:8px}.ranking-item{display:flex;align-items:center;gap:10px;padding:10px 14px;background:linear-gradient(135deg,#fffcf5,#fff6ee);border-radius:12px;transition:all .3s ease;border:1px solid rgba(249,217,160,.3)}.ranking-item:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.ranking-medal{font-size:1.3rem;flex-shrink:0}.ranking-emoji{font-size:1.1rem;flex-shrink:0}.ranking-info{flex:1;min-width:0}.ranking-info strong{font-size:.82rem;display:block;color:var(--text)}.ranking-info p{font-size:.78rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ranking-likes{font-size:.82rem;font-weight:700;color:var(--accent);white-space:nowrap;flex-shrink:0}.nav-bar{display:flex;gap:10px;margin:4px 0 18px}.nav-btn{flex:1;padding:12px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:.88rem;font-weight:600;cursor:pointer;transition:all .3s ease;color:var(--text-secondary);box-shadow:var(--shadow)}.nav-btn:hover{border-color:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-md);color:var(--primary)}.nav-btn.active{border-color:var(--primary);background:linear-gradient(135deg,var(--primary) 0%,#9B8FE8 100%);color:#fff;box-shadow:0 4px 16px #7c6fd440}.nav-btn.post-btn:not(.active){border-color:var(--accent-light);color:var(--primary);background:linear-gradient(135deg,#fefbff,#fdf4f9)}.main-content{flex:1;padding-bottom:32px}.section-title{font-size:1.1rem;margin-bottom:16px;color:var(--text);font-weight:700}.chain-tree{margin-bottom:20px;padding:18px;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);transition:box-shadow .3s ease}.chain-tree:hover{box-shadow:var(--shadow-md)}.chain-node{position:relative}.chain-children{margin-left:20px;padding-left:16px;border-left:2px dashed var(--border)}.chain-connector{display:flex;align-items:center;gap:8px;padding:6px 0;color:var(--text-secondary)}.connector-line{flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent);max-width:32px}.connector-icon{font-size:.85rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{opacity:.5;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.kindness-card{padding:16px;border-radius:14px;background:linear-gradient(135deg,#fefefe,#faf8ff);border-left:3px solid var(--cat-color, var(--primary));transition:all .3s ease}.kindness-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.card-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}.card-emoji{font-size:1.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg);border-radius:12px}.card-meta{flex:1;display:flex;flex-direction:column;gap:1px}.card-author{font-size:.88rem;color:var(--text);font-weight:700}.card-time{font-size:.72rem;color:var(--text-secondary);font-weight:400}.card-category{font-size:.68rem;padding:4px 10px;border-radius:20px;color:#333;font-weight:600;white-space:nowrap;opacity:.85}.card-description{font-size:.9rem;color:var(--text);line-height:1.6;margin-bottom:10px}.card-actions{display:flex;gap:8px;align-items:center}.like-btn{background:none;border:1.5px solid var(--border);border-radius:20px;padding:5px 14px;font-size:.8rem;color:var(--text-secondary);cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:5px}.like-btn:hover{border-color:var(--accent);background:#f2a7c30f;color:var(--accent)}.like-btn.liked{border-color:var(--accent);color:var(--accent);background:#f2a7c31a;font-weight:600}@keyframes like-pop{0%{transform:scale(1)}40%{transform:scale(1.25)}to{transform:scale(1)}}.like-btn:active{animation:like-pop .35s cubic-bezier(.34,1.56,.64,1)}.chain-btn{background:none;border:1.5px dashed var(--border);border-radius:20px;padding:5px 14px;font-size:.8rem;color:var(--text-secondary);cursor:pointer;transition:all .3s ease}.chain-btn:hover{border-color:var(--primary-light);color:var(--primary);background:#7c6fd40a}.form-container{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-md);overflow:hidden;border:1px solid var(--border)}.reply-banner{display:flex;align-items:center;gap:12px;padding:14px 18px;background:linear-gradient(135deg,#f5f1ff,#fdf4f9);font-size:.85rem;border-bottom:1px solid var(--border)}.reply-banner span:first-child{font-size:1.3rem}.reply-preview{color:var(--text-secondary);font-size:.8rem;margin-top:2px}.kindness-form{padding:22px;display:flex;flex-direction:column;gap:18px}.kindness-form h2{font-size:1.05rem;font-weight:700;color:var(--text)}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:.82rem;font-weight:600;color:var(--text)}.form-group input,.form-group textarea{padding:11px 16px;border:1.5px solid var(--border);border-radius:12px;font-size:.9rem;font-family:inherit;transition:all .3s ease;resize:vertical;color:var(--text);background:var(--bg)}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);background:var(--surface);box-shadow:0 0 0 3px #7c6fd41a}.char-count{font-size:.72rem;color:var(--text-secondary);text-align:right}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(115px,1fr));gap:8px}.category-btn{padding:9px 10px;border:1.5px solid var(--border);border-radius:12px;background:var(--surface);font-size:.8rem;cursor:pointer;transition:all .3s ease;color:var(--text)}.category-btn:hover{border-color:var(--cat-color);transform:translateY(-1px)}.category-btn.selected{border-color:var(--cat-color);background:var(--cat-color);color:#333;font-weight:600;box-shadow:0 2px 8px #00000014}.emoji-grid{display:flex;flex-wrap:wrap;gap:8px}.emoji-btn{width:42px;height:42px;border:1.5px solid var(--border);border-radius:12px;background:var(--surface);font-size:1.2rem;cursor:pointer;transition:all .25s ease;display:flex;align-items:center;justify-content:center}.emoji-btn:hover{transform:scale(1.12);border-color:var(--primary-light)}.emoji-btn.selected{border-color:var(--primary);background:#f5f1ff;transform:scale(1.12);box-shadow:0 0 0 3px #7c6fd41f}.form-actions{display:flex;gap:10px;justify-content:flex-end;padding-top:4px}.btn-primary{padding:11px 28px;background:linear-gradient(135deg,var(--primary) 0%,#9B8FE8 100%);color:#fff;border:none;border-radius:12px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #7c6fd433}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #7c6fd44d}.btn-secondary{padding:11px 24px;background:none;color:var(--text-secondary);border:1.5px solid var(--border);border-radius:12px;font-size:.9rem;cursor:pointer;transition:all .3s ease}.btn-secondary:hover{border-color:var(--text-secondary);background:var(--bg)}.empty-state{text-align:center;padding:56px 16px;color:var(--text-secondary)}.empty-icon{font-size:3.5rem;display:block;margin-bottom:16px;animation:float 3s ease-in-out infinite}.empty-state h3{margin-bottom:8px;color:var(--text);font-weight:700}.footer{text-align:center;padding:28px 0;color:var(--text-secondary);font-size:.82rem;border-top:1px solid var(--border);margin-top:auto;letter-spacing:.03em}@media(max-width:480px){.stats{grid-template-columns:repeat(2,1fr)}.stat-number{font-size:1.4rem}.header-title{font-size:1.6rem}.category-grid{grid-template-columns:repeat(2,1fr)}.chain-children{margin-left:12px;padding-left:12px}.app{padding:0 16px}}