:root{--bg: #0b0f17;--panel: #111826;--panel-2: #1a2233;--border: #1f2a3d;--text: #e6edf6;--muted: #8a9bb4;--accent: #10b981;--accent-2: #059669;--danger: #ef4444;--warning: #f59e0b}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit;background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 12px;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--accent)}hr{border:0;border-top:1px solid var(--border);margin:1em 0}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.layout{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:16px;overflow-y:auto}.brand{font-weight:700;font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:8px}.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block}.btn{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:9px 14px;font-weight:600;transition:background .15s}.btn:hover{background:var(--accent-2)}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 12px}.btn-ghost:hover{background:var(--panel-2)}.btn-danger{background:var(--danger);color:#fff;border:0;border-radius:8px;padding:8px 12px}.nav-link{display:block;padding:9px 12px;border-radius:8px;color:var(--text)}.nav-link:hover,.nav-link.active{background:var(--panel-2);text-decoration:none}.conv-list{flex:1;overflow-y:auto;margin-top:12px;display:flex;flex-direction:column;gap:4px}.conv-item{padding:8px 10px;border-radius:8px;cursor:pointer;display:flex;flex-direction:column;gap:2px}.conv-item:hover,.conv-item.active{background:var(--panel-2)}.conv-title{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-meta{font-size:11px;color:var(--muted)}.main{display:flex;flex-direction:column;min-width:0;height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 22px;border-bottom:1px solid var(--border);background:var(--panel)}.topbar h2{margin:0;font-size:16px}.content{flex:1;overflow-y:auto;padding:24px}.page{max-width:880px;margin:0 auto}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.login-wrap{height:100vh;display:grid;place-items:center}.login-card{width:380px;padding:32px;background:var(--panel);border:1px solid var(--border);border-radius:14px}.login-card h1{margin:0 0 6px;font-size:22px}.login-card p{color:var(--muted);margin:0 0 22px;font-size:13px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:12px;color:var(--muted)}.error-msg{color:var(--danger);margin-top:8px;font-size:13px;min-height:18px}.composer{border-top:1px solid var(--border);padding:16px 24px;background:var(--panel);display:flex;gap:10px;align-items:flex-end}.composer textarea{flex:1;resize:none;min-height:60px;max-height:220px}.message{margin-bottom:28px;max-width:880px;margin-left:auto;margin-right:auto}.message-role{font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:8px}.role-user{color:#a7f3d0}.role-assistant{color:var(--accent)}.bubble{background:var(--panel);border:1px solid var(--border);padding:14px 18px;border-radius:12px}.bubble pre{background:#0a0f17;border:1px solid var(--border);padding:10px 12px;border-radius:8px;overflow-x:auto}.bubble code{background:#0a0f17;padding:1px 6px;border-radius:4px;font-size:12.5px}.stages{display:flex;flex-direction:column;gap:14px;margin-top:16px}.stage-block{border:1px solid var(--border);border-radius:10px;overflow:hidden}.stage-block summary{cursor:pointer;padding:10px 14px;background:var(--panel-2);font-weight:600;font-size:13px;-webkit-user-select:none;user-select:none}.stage-block .stage-body{padding:14px 18px;background:var(--panel)}.stage-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.stage-tab{padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:var(--panel-2);font-size:12px}.stage-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}.aggregate{display:flex;flex-direction:column;gap:6px;margin-top:10px}.agg-row{display:flex;justify-content:space-between;padding:6px 10px;background:var(--panel-2);border-radius:6px;font-size:13px}.table{width:100%;border-collapse:collapse;font-size:13px}.table th,.table td{padding:8px 10px;border-bottom:1px solid var(--border);text-align:left}.table th{font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase}.stage-pill{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;background:var(--panel-2);color:var(--muted);margin-left:8px}.stage-pill.live{background:var(--accent);color:#fff}.muted{color:var(--muted)}