*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#f7f9fa;--surface:#fff;--border:#e1e8ed;--primary:#1d9bf0;--primary-hover:#1a8cd8;--danger:#e0245e;--text:#0f1419;--text-muted:#536471;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08)}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
a{color:inherit;text-decoration:none}
.navbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav-logo{font-size:1.25rem;font-weight:800;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{padding:6px 12px;border-radius:20px;font-size:.85rem;font-weight:500;color:var(--text-muted);transition:.15s}
.nav-link:hover,.nav-link.active{background:#e8f5fd;color:var(--primary)}
.nav-link.logout:hover{background:#fce8ef;color:var(--danger)}
.nav-btn{background:none;border:none;cursor:pointer;font-family:inherit;font-size:.85rem;font-weight:500;color:var(--text-muted)}
.main-content{max-width:680px;margin:0 auto;padding:24px 16px}
.page-layout{display:flex;gap:24px}
.feed-column{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}
.auth-container{display:flex;justify-content:center;align-items:center;min-height:80vh}
.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:40px 32px;width:100%;max-width:400px;box-shadow:var(--shadow)}
.auth-title{font-size:2rem;font-weight:800;color:var(--primary);text-align:center;margin-bottom:4px}
.auth-subtitle{text-align:center;color:var(--text-muted);margin-bottom:24px}
.auth-switch{text-align:center;margin-top:16px;font-size:.9rem;color:var(--text-muted)}
.auth-switch a{color:var(--primary)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--text-muted)}
.form-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;outline:none;transition:.2s;background:var(--surface)}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,155,240,.1)}
.btn{padding:10px 20px;border:none;border-radius:20px;font-size:.9rem;font-weight:700;cursor:pointer;transition:.15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-secondary:hover{background:var(--bg)}
.btn-full{width:100%}
.btn-sm{padding:5px 10px;font-size:.8rem;border-radius:14px}
.btn-icon{background:none;border:none;cursor:pointer;padding:4px 8px;border-radius:6px;font-size:1rem}
.btn-icon:hover{background:#fce8ef}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:12px;font-size:.9rem}
.alert-error{background:#fce8ef;color:var(--danger);border:1px solid #f8aac0}
.alert-success{background:#e8f5e9;color:#2e7d32;border:1px solid #a5d6a7}
.composer-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.composer-row{display:flex;gap:12px;align-items:flex-start}
.composer-input{flex:1;border:none;outline:none;resize:none;font-size:1.1rem;line-height:1.5;font-family:inherit;background:transparent}
.composer-footer{display:flex;justify-content:flex-end;align-items:center;gap:8px;margin-top:8px;padding-top:8px;border-top:1px solid var(--border);flex-wrap:wrap}
.char-counter{font-size:.85rem;color:var(--text-muted)}
.post-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:.15s}
.post-card:hover{border-color:var(--primary)}
.ai-post{background:#fff8e1;border-color:#f9c74f}
.post-header{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.post-author{display:flex;align-items:center;gap:6px}
.author-name{font-weight:700}
.author-id{color:var(--text-muted);font-size:.85rem}
.post-time{color:var(--text-muted);font-size:.8rem;margin-left:auto}
.ai-badge{background:#fff3cd;color:#856404;border-radius:20px;padding:2px 8px;font-size:.75rem;font-weight:600}
.delete-form{margin-left:4px}
.post-content{margin-bottom:12px;line-height:1.6}
.post-link{color:var(--text);display:block}
.post-link:hover{color:var(--primary)}
.post-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.like-btn{background:none;border:none;cursor:pointer;padding:6px 12px;border-radius:20px;font-size:.9rem;display:flex;align-items:center;gap:4px;color:var(--text-muted);transition:.15s}
.like-btn:hover{background:#fce8ef;color:var(--danger)}
.like-btn.liked{color:var(--danger)}
.reply-btn{padding:6px 12px;border-radius:20px;font-size:.9rem;color:var(--text-muted);transition:.15s}
.reply-btn:hover{background:#e8f5fd;color:var(--primary)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;flex-shrink:0}
.avatar.small{width:30px;height:30px;font-size:.8rem}
.post-media{max-width:100%;max-height:400px;border-radius:8px;margin-top:10px;cursor:pointer;display:block}
.media-preview{position:relative;margin:8px 0}
.remove-media-btn{position:absolute;top:4px;right:4px;background:rgba(0,0,0,.6);color:#fff;border:none;border-radius:50%;width:24px;height:24px;cursor:pointer;font-size:12px}
.media-upload-label{cursor:pointer;font-size:1.3rem;padding:4px 8px;border-radius:6px}
.media-upload-label:hover{background:#e8f5fd}
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:999;align-items:center;justify-content:center;cursor:zoom-out}
.lightbox.active{display:flex}
.lightbox img{max-width:90vw;max-height:90vh;border-radius:8px}
.page-header{display:flex;align-items:center;gap:16px;padding-bottom:8px}
.page-header h2{font-size:1.2rem;font-weight:800}
.back-btn{color:var(--primary);font-size:.9rem}
.back-btn:hover{text-decoration:underline}
.section-title{font-weight:700;color:var(--text-muted);font-size:.9rem;padding:8px 0;border-bottom:1px solid var(--border)}
.comments-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.comment-item{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid var(--border)}
.comment-body{flex:1}
.comment-author{font-size:.85rem;font-weight:700;color:var(--text-muted)}
.comment-text{margin-top:4px;font-size:.95rem}
.comment-form{display:flex;gap:8px;margin-top:12px}
.comment-form .form-input{flex:1}
.search-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.search-row{display:flex;gap:8px}
.search-input{flex:1;padding:10px 16px;border:1px solid var(--border);border-radius:20px;outline:none;font-size:.95rem}
.search-input:focus{border-color:var(--primary)}
.search-result-info{font-size:.9rem;color:var(--text-muted);padding:4px 0}
.history-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.history-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.history-tag{background:#e8f5fd;color:var(--primary);padding:4px 12px;border-radius:20px;font-size:.85rem}
.history-tag:hover{background:var(--primary);color:#fff}
.profile-header{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.profile-info{display:flex;gap:16px;align-items:center;margin:12px 0}
.profile-avatar{width:72px;height:72px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700}
.profile-id{color:var(--text-muted);font-size:.9rem}
.profile-email{color:var(--text-muted);font-size:.85rem;margin-top:2px}
.profile-stats{font-size:.9rem;color:var(--text-muted)}
.info-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.info-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}
.info-title{font-size:1rem;font-weight:700}
.info-desc{color:var(--text-muted);font-size:.9rem;line-height:1.5;margin-bottom:8px}
.info-author{font-size:.8rem;color:var(--text-muted)}
.info-list{display:flex;flex-direction:column;gap:12px}
.empty-state{text-align:center;padding:40px 0;color:var(--text-muted)}
.btn-voice{background:transparent;border:1px solid var(--primary);color:var(--primary);padding:6px 12px}
.btn-voice:hover{background:#e8f5fd}
.btn-voice-active{background:#fce8ef!important;border-color:var(--danger)!important;color:var(--danger)!important;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}
.ai-result{background:#e8f5fd;border-left:3px solid var(--primary);border-radius:6px;padding:10px 12px;margin-top:8px;font-size:.9rem}
.ai-menu-wrap{position:relative;display:inline-block}
.ai-menu{position:absolute;bottom:110%;left:0;background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.15);z-index:50;min-width:160px;overflow:hidden}
.ai-menu button{display:block;width:100%;padding:10px 14px;text-align:left;background:none;border:none;cursor:pointer;font-size:.85rem;border-bottom:1px solid var(--border)}
.ai-menu button:last-child{border-bottom:none}
.ai-menu button:hover{background:#e8f5fd;color:var(--primary)}
.ai-menu-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:16px;padding:5px 12px;font-size:.8rem;cursor:pointer}
.assist-result{background:#fff8e1;border:1px solid #f9c74f;border-radius:8px;padding:10px;margin-top:8px;font-size:.9rem;display:flex;gap:8px;align-items:flex-start;flex-wrap:wrap}
.assist-result p{flex:1;margin:0}
.hashtag-result{background:#e8f5e9;border:1px solid #a5d6a7;border-radius:8px;padding:10px;margin-top:8px;font-size:.9rem;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.trend-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.trend-summary h3{font-size:1rem;margin-bottom:8px}
.trend-topics{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.trend-tag{background:#e8f5fd;color:var(--primary);padding:3px 10px;border-radius:20px;font-size:.8rem}
.side-panel{position:fixed;top:0;right:-420px;width:400px;height:100vh;background:var(--surface);box-shadow:-4px 0 20px rgba(0,0,0,.15);z-index:200;transition:right .3s ease;display:flex;flex-direction:column}
.side-panel.open{right:0}
.panel-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:199}
.panel-overlay.open{display:block}
.panel-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border);font-size:1.1rem;font-weight:700}
.panel-close{background:none;border:none;cursor:pointer;font-size:1.2rem;color:var(--text-muted);padding:4px 8px;border-radius:6px}
.panel-close:hover{background:var(--bg)}
.panel-body{flex:1;overflow-y:auto;padding:20px}
.panel-loading,.panel-error{text-align:center;padding:40px 20px;color:var(--text-muted);line-height:1.8}
.panel-error{color:var(--danger)}
.location-input-box{display:flex;flex-direction:column;gap:8px}
.location-hint{color:var(--text-muted);font-size:.9rem;margin:0}
.weather-card{display:flex;flex-direction:column;gap:16px}
.weather-main{display:flex;align-items:center;gap:12px;background:linear-gradient(135deg,#74b9ff,#0984e3);border-radius:12px;padding:20px;color:#fff}
.weather-icon{font-size:3rem}
.weather-temp{font-size:2.5rem;font-weight:800}
.weather-desc{font-size:1.1rem}
.weather-location{color:var(--text-muted);font-size:.9rem}
.weather-details{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:var(--bg);border-radius:8px;padding:12px}
.weather-details div{font-size:.9rem}
.weather-forecast{background:#e8f5fd;border-radius:8px;padding:12px}
.forecast-title{font-weight:700;margin-bottom:6px;color:var(--primary)}
.food-list{display:flex;flex-direction:column;gap:12px}
.food-item{background:var(--bg);border-radius:10px;padding:14px;border-left:3px solid var(--primary)}
.food-name{font-weight:700;font-size:1rem;margin-bottom:4px}
.food-genre{color:var(--primary);font-size:.8rem;margin-bottom:4px}
.food-rating{color:#f39c12;font-size:.85rem}
.food-desc{color:var(--text-muted);font-size:.85rem;margin-top:4px}
.food-price{font-size:.85rem;margin-top:4px;color:#27ae60}
.chat-window{position:fixed;bottom:20px;right:20px;width:340px;height:480px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 24px rgba(0,0,0,.15);z-index:300;flex-direction:column;display:none}
.chat-window.open{display:flex}
.chat-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--primary);color:#fff;border-radius:var(--radius) var(--radius) 0 0;font-weight:700}
.chat-header button{background:none;border:none;color:#fff;cursor:pointer;font-size:1.1rem}
.chat-messages{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}
.chat-msg{padding:10px 12px;border-radius:12px;max-width:85%;font-size:.9rem;line-height:1.5;word-break:break-word}
.ai-msg{background:#e8f5fd;align-self:flex-start;border-bottom-left-radius:2px}
.user-msg{background:var(--primary);color:#fff;align-self:flex-end;border-bottom-right-radius:2px}
.chat-input-row{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}
.chat-input-row .form-input{flex:1;padding:8px 12px;border-radius:20px}
.chat-input-row .btn{border-radius:20px;padding:8px 14px}

.food-open { font-size: .8rem; color: var(--text-muted); margin-top: 2px; }
.food-item a { color: var(--primary); font-weight: 700; }
.food-item a:hover { text-decoration: underline; }