*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#fff;--bg-secondary:#f5f5f5;--text:#333;--text-light:#888;--text-muted:#aaa;--green:#5baa59;--green-hover:#4e9a4d;--orange:#f5a623;--red:#e31e24;--border:#eee;--card-shadow:0 1px 4px #0000000f;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.app{background:var(--bg);flex-direction:column;max-width:480px;height:100vh;margin:0 auto;display:flex}.header{border-bottom:1px solid var(--border);background:#fff;align-items:center;gap:10px;padding:12px 16px;display:flex}.logo{color:var(--text);letter-spacing:-.3px;font-size:20px;font-weight:700}.logo-green{color:var(--green)}.subtitle{color:var(--text-muted);font-size:11px}main{background:var(--bg-secondary);flex:1;padding-bottom:56px;overflow-y:auto}.search-bar{z-index:10;border-bottom:1px solid var(--border);background:#fff;gap:8px;padding:10px 12px;display:flex;position:sticky;top:0}.search-bar input{background:var(--bg-secondary);color:var(--text);border:1px solid #ddd;border-radius:8px;outline:none;flex:1;padding:10px 14px;font-size:15px;transition:border-color .2s}.search-bar input:focus{border-color:var(--green)}.search-bar input::placeholder{color:var(--text-muted)}.search-bar button{background:var(--green);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:10px 16px;font-size:15px;font-weight:500}.search-bar button:active{background:var(--green-hover)}.section-title{color:var(--text);padding:12px 12px 6px;font-size:16px;font-weight:700}.grid{grid-template-columns:repeat(2,1fr);gap:8px;padding:6px 12px 16px;display:grid}.card{border-radius:var(--radius);box-shadow:var(--card-shadow);background:#fff;position:relative;overflow:hidden}.card-img{object-fit:contain;background:#fff;width:100%;height:140px;padding:8px;display:block}.card-img.placeholder{background:var(--bg-secondary);color:var(--text-muted);justify-content:center;align-items:center;font-size:36px;display:flex}.badge{background:var(--red);color:#fff;border-radius:6px;padding:3px 7px;font-size:11px;font-weight:700;position:absolute;top:8px;left:8px}.card-body{padding:6px 10px 10px}.card-name{color:var(--text);-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:36px;font-size:13px;font-weight:400;line-height:1.35;display:-webkit-box;overflow:hidden}.card-meta{color:var(--text-light);align-items:center;gap:4px;margin-top:4px;font-size:11px;display:flex}.card-meta .stars{color:var(--orange)}.card-meta .nutr{color:var(--text-muted);font-size:10px}.card-bottom{justify-content:space-between;align-items:center;margin-top:8px;display:flex}.price{color:var(--text);font-size:16px;font-weight:700}.price-unit{color:var(--text-light);font-size:12px;font-weight:400}.btn-add{background:var(--green);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;width:34px;height:34px;font-size:20px;font-weight:400;transition:background .15s;display:flex}.btn-add:active{background:var(--green-hover)}.cart-list{padding:0 12px}.cart-item{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:14px 0;display:flex}.cart-name{color:var(--text);flex:1;font-size:14px}.cart-qty{color:var(--text-light);background:var(--bg-secondary);border-radius:4px;padding:2px 8px;font-size:13px}.cart-price{color:var(--text);font-size:14px;font-weight:700}.cart-total{text-align:right;color:var(--text);padding:16px 12px;font-size:18px;font-weight:700}.btn-clear{border:1px solid var(--border);width:calc(100% - 24px);color:var(--red);cursor:pointer;background:#fff;border-radius:10px;margin:0 12px 16px;padding:12px;font-size:15px;font-weight:500;display:block}.btn-clear:active{background:var(--bg-secondary)}.chat-tab{background:#fff;flex-direction:column;height:calc(100vh - 112px);display:flex}.messages{background:var(--bg-secondary);flex:1;padding:12px;overflow-y:auto}.chat-hint{text-align:center;color:var(--text-muted);margin-top:30%;font-size:14px;line-height:1.5}.msg{margin-bottom:8px;display:flex}.msg-user{justify-content:flex-end}.msg-assistant{justify-content:flex-start}.msg-bubble{white-space:pre-wrap;word-break:break-word;border-radius:16px;max-width:82%;padding:10px 14px;font-size:14px;line-height:1.45}.msg-user .msg-bubble{background:var(--green);color:#fff;border-bottom-right-radius:4px}.msg-assistant .msg-bubble{color:var(--text);box-shadow:var(--card-shadow);background:#fff;border-bottom-left-radius:4px}.typing{color:var(--text-muted);font-style:italic}.chat-input{border-top:1px solid var(--border);background:#fff;gap:8px;padding:10px 12px;display:flex}.chat-input input{background:var(--bg-secondary);color:var(--text);border:1px solid #ddd;border-radius:20px;outline:none;flex:1;padding:10px 14px;font-size:15px}.chat-input input:focus{border-color:var(--green)}.chat-input input::placeholder{color:var(--text-muted)}.chat-input button{background:var(--green);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;width:40px;height:40px;font-size:18px}.chat-input button:active{background:var(--green-hover)}.chat-input button:disabled{background:#ccc}.bottom-nav{border-top:1px solid var(--border);z-index:100;background:#fff;max-width:480px;margin:0 auto;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-nav button{color:var(--text-muted);cursor:pointer;background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:2px;padding:6px 0 8px;font-size:10px;transition:color .15s;display:flex}.bottom-nav button.active{color:var(--green)}.nav-icon{font-size:22px;line-height:1}.loader,.empty{text-align:center;color:var(--text-muted);padding:40px 16px;font-size:15px}.tab-content{padding-top:0}