:root{--bg: #0f1115;--panel: #171a21;--panel-2: #1f242e;--border: #2a313d;--text: #e6e9ef;--muted: #9aa4b2;--accent: #4f8cff;--accent-soft: #23304d;--green: #3fb950;--red: #f85149;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:var(--accent)}.app{display:flex;height:100vh}.sidebar{width:210px;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:14px 10px;gap:4px;flex-shrink:0}.sidebar h1{font-size:15px;margin:4px 8px 14px}.nav-btn{text-align:left;background:none;border:none;color:var(--muted);padding:9px 12px;border-radius:8px;cursor:pointer;font-size:14px}.nav-btn:hover{background:var(--panel-2);color:var(--text)}.nav-btn.active{background:var(--accent-soft);color:var(--text)}.main{flex:1;overflow-y:auto;padding:22px 26px}.main h2{margin:0 0 16px;font-size:18px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:12px}.muted{color:var(--muted)}.row{display:flex;justify-content:space-between;gap:12px;align-items:center}button.action{background:var(--accent);color:#fff;border:none;border-radius:7px;padding:7px 13px;cursor:pointer;font-size:13px}button.action:hover{filter:brightness(1.1)}button.ghost{background:var(--panel-2);color:var(--text)}button.danger{background:var(--red)}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:7px 9px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600}.chat-layout{display:flex;gap:16px;height:100%}.conv-list{width:210px;flex-shrink:0;overflow-y:auto}.conv-item{display:flex;justify-content:space-between;align-items:center;gap:6px;padding:8px 10px;border-radius:7px;cursor:pointer;color:var(--muted);font-size:13px}.conv-item:hover{background:var(--panel-2);color:var(--text)}.conv-item.active{background:var(--accent-soft);color:var(--text)}.conv-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-del{opacity:0}.conv-item:hover .conv-del{opacity:.7}.chat{display:flex;flex-direction:column;height:100%;flex:1;min-width:0}.messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding-bottom:12px}.msg{max-width:760px;padding:10px 14px;border-radius:12px;white-space:pre-wrap;line-height:1.45}.msg.user{align-self:flex-end;background:var(--accent-soft)}.msg.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--border)}.tool-chip{font-size:12px;color:var(--muted);font-style:italic}.composer{display:flex;gap:8px;padding-top:12px;border-top:1px solid var(--border)}.composer input{flex:1;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:11px 13px;font-size:14px}.composer input:focus{outline:1px solid var(--accent)}.filters{display:flex;gap:8px;margin-bottom:12px}.filters input,.filters select{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:7px;padding:7px 10px;font-size:13px}.pill{display:inline-block;padding:2px 8px;border-radius:20px;background:var(--panel-2);font-size:12px}.dropzone{border:1.5px dashed var(--border);border-radius:10px;padding:22px;text-align:center;color:var(--muted);cursor:pointer;margin-bottom:14px}.dropzone.over{border-color:var(--accent);color:var(--text)}img.trend{max-width:100%;border-radius:8px;border:1px solid var(--border)}.loading{display:flex;height:100vh;align-items:center;justify-content:center;color:var(--muted)}.login-wrap{display:flex;height:100vh;align-items:center;justify-content:center}.login-card{display:flex;flex-direction:column;gap:12px;width:320px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:28px}.login-card h1{font-size:20px;margin:0}.login-sub{color:var(--muted);margin:0 0 6px;font-size:14px}.login-card input{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:11px 13px;font-size:14px}.login-card input:focus{outline:1px solid var(--accent)}.login-btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:11px;cursor:pointer;font-size:14px}.login-btn:disabled{opacity:.6;cursor:default}.login-switch{background:none;border:none;color:var(--accent);cursor:pointer;font-size:13px;padding:4px}.login-error{color:var(--red);font-size:13px}.google-btn{display:flex;justify-content:center;min-height:2px}.google-sep{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}.google-sep:before,.google-sep:after{content:"";flex:1;height:1px;background:var(--border)}.google-hint{font-size:12px;color:var(--muted);text-align:center}.google-hint code{background:var(--panel-2);padding:1px 5px;border-radius:4px}.sidebar-footer{margin-top:auto;border-top:1px solid var(--border);padding-top:10px}.user-email{font-size:12px;color:var(--muted);padding:4px 12px;word-break:break-all}.plan-badge{color:var(--accent)}.nav-btn.logout{color:var(--red);width:100%}