*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--accent:#ff6b35;--accent-dark:#e05a28;--bg:#f2f2f7;--card-bg:#fff;--text:#1c1c1e;--text-secondary:#6c6c70;--nav-height:60px;--radius:16px}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.app-shell{flex-direction:column;height:100dvh;display:flex}.app-content{padding-bottom:var(--nav-height);flex:1;overflow-y:auto}.bottom-nav{height:var(--nav-height);background:var(--card-bg);z-index:100;border-top:1px solid #e0e0e0;justify-content:space-around;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.nav-item{color:var(--text-secondary);flex-direction:column;align-items:center;gap:2px;font-size:11px;font-weight:500;text-decoration:none;display:flex}.nav-item.active{color:var(--accent)}.nav-icon{font-size:22px}.page{max-width:600px;margin:0 auto;padding:20px 16px}.page h1{margin-bottom:20px;font-size:28px;font-weight:700}.card{background:var(--card-bg);border-radius:var(--radius);margin-bottom:16px;padding:16px}.card h2{margin-bottom:12px;font-size:17px;font-weight:600}.recipe-list{flex-direction:column;gap:10px;list-style:none;display:flex}.recipe-card{background:var(--card-bg);border-radius:var(--radius);cursor:pointer;justify-content:space-between;align-items:center;padding:16px;transition:opacity .15s;display:flex}.recipe-card:active{opacity:.7}.recipe-title{font-size:16px;font-weight:500}.chevron{color:var(--text-secondary);font-size:20px}.ingredient-list{flex-direction:column;gap:8px;list-style:none;display:flex}.ingredient-list li{border-bottom:1px solid var(--bg);padding:4px 0;font-size:15px}.ingredient-list li:last-child{border-bottom:none}.steps-list{flex-direction:column;gap:12px;margin-bottom:24px;padding-left:24px;list-style:decimal;display:flex}.step-item{cursor:pointer;border-radius:12px;padding:12px;font-size:15px;line-height:1.5;transition:background .2s}.step-item.active{background:#ff6b351f;font-weight:600}.step-nav{justify-content:space-between;align-items:center;gap:12px;display:flex}.step-nav button{flex:1}.step-nav span{text-align:center;min-width:60px;color:var(--text-secondary);font-size:14px}.listening-badge{color:var(--accent);margin-bottom:12px;font-size:14px}.primary-btn{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;width:100%;margin-top:12px;padding:14px;font-size:16px;font-weight:600}.primary-btn:hover{background:var(--accent-dark)}.primary-btn:disabled{opacity:.4;cursor:not-allowed}.back-btn{color:var(--accent);cursor:pointer;background:0 0;border:none;margin-bottom:12px;padding:0;font-size:16px}button{cursor:pointer;border:1px solid #ccc;border-radius:10px;padding:10px 16px;font-size:14px}.text-input{background:var(--bg);border:1px solid #ddd;border-radius:10px;width:100%;margin-bottom:10px;padding:12px;font-size:15px}.upload-history{flex-direction:column;gap:10px;list-style:none;display:flex}.upload-record{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.upload-name{color:var(--text);word-break:break-all;flex:1;font-size:13px}.chunks{color:var(--text-secondary);font-size:11px}.badge{text-transform:uppercase;border-radius:99px;padding:2px 8px;font-size:11px;font-weight:600}.badge-processing{color:#856404;background:#fff3cd}.badge-completed{color:#0a3622;background:#d1e7dd}.badge-failed{color:#58151c;background:#f8d7da}.fab{bottom:calc(var(--nav-height) + 16px);background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;font-size:22px;display:flex;position:fixed;right:20px;box-shadow:0 4px 14px #0003}.modal-overlay{z-index:200;background:#00000080;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.modal{background:var(--card-bg);text-align:center;border-radius:24px 24px 0 0;width:100%;max-width:600px;padding:28px 24px 48px;position:relative}.modal h2{margin-bottom:8px;font-size:20px;font-weight:700}.modal-close{background:var(--bg);cursor:pointer;border:none;border-radius:50%;width:32px;height:32px;font-size:16px;position:absolute;top:16px;right:20px}.voice-label{color:var(--text-secondary);margin-bottom:20px;font-size:15px}.transcript{color:var(--text-secondary);margin-bottom:8px;font-style:italic}.voice-response{background:var(--bg);border-radius:12px;margin-bottom:20px;padding:12px;font-size:15px;line-height:1.5}.mic-btn{cursor:pointer;color:#fff;border:none;border-radius:50%;width:80px;height:80px;margin-top:16px;font-size:32px;transition:background .3s}.center-message{height:50vh;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex}.empty{color:var(--text-secondary);text-align:center;margin-top:40px}.error{color:#c0392b;font-size:14px}.chat-shell{height:calc(100dvh - var(--nav-height));flex-direction:column;display:flex}.chat-header{background:var(--card-bg);border-bottom:1px solid #e0e0e0;padding:16px 16px 8px}.chat-header h1{font-size:22px;font-weight:700}.chat-messages{flex-direction:column;flex:1;gap:10px;padding:16px;display:flex;overflow-y:auto}.chat-empty{color:var(--text-secondary);text-align:center;margin-top:40px;font-size:15px}.chat-error{color:#c0392b;text-align:center;font-size:13px}.message{display:flex}.message-user{justify-content:flex-end}.message-assistant{justify-content:flex-start}.message-bubble{white-space:pre-wrap;word-break:break-word;border-radius:18px;max-width:78%;padding:10px 14px;font-size:15px;line-height:1.45}.message-user .message-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.message-assistant .message-bubble{background:var(--card-bg);color:var(--text);border-bottom-left-radius:4px;box-shadow:0 1px 3px #00000014}.message-bubble.interim{opacity:.55;font-style:italic}.message-bubble.typing{align-items:center;gap:5px;padding:12px 16px;display:flex}.message-bubble.typing span{background:var(--text-secondary);border-radius:50%;width:7px;height:7px;animation:1.2s infinite bounce}.message-bubble.typing span:nth-child(2){animation-delay:.2s}.message-bubble.typing span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.chat-input-bar{padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--card-bg);border-top:1px solid #e0e0e0;align-items:flex-end;gap:8px;display:flex}.mic-fab{cursor:pointer;color:#fff;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;transition:background .25s;display:flex}.chat-textarea{resize:none;background:var(--bg);border:1px solid #ddd;border-radius:22px;flex:1;max-height:120px;padding:10px 12px;font-family:inherit;font-size:15px;line-height:1.4;overflow-y:auto}.chat-textarea:focus{border-color:var(--accent);outline:none}.send-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;display:flex}.send-btn:disabled{opacity:.35;cursor:not-allowed}