:root{--bg:#f5f6f8;--surface:#fff;--surface-alt:#f0f1f4;--border:#e2e4e9;--text:#1a1d23;--text-muted:#6b7280;--accent:#2f5d50;--accent-hover:#24473d;--accent-contrast:#fff;--danger:#b3261e;--sidebar-bg:#171a1f;--sidebar-text:#e7e9ec;--sidebar-text-muted:#9aa0aa;--sidebar-active:#262b33;--bubble-user:#2f5d50;--bubble-user-text:#fff;--bubble-assistant:#fff;--bubble-assistant-text:#1a1d23;--radius:10px;--shadow:0 1px 2px #0000000f, 0 1px 8px #0000000a}@media (prefers-color-scheme:dark){:root{--bg:#14161a;--surface:#1c1f24;--surface-alt:#23262c;--border:#2d3138;--text:#e7e9ec;--text-muted:#9aa0aa;--accent:#4c9484;--accent-hover:#5cab99;--accent-contrast:#0c1210;--danger:#e5766c;--sidebar-bg:#0d0f12;--sidebar-text:#e7e9ec;--sidebar-text-muted:#7d838d;--sidebar-active:#1c1f24;--bubble-user:#3a7568;--bubble-user-text:#fff;--bubble-assistant:#23262c;--bubble-assistant-text:#e7e9ec}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}a{color:inherit}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}.shell{width:100vw;height:100vh;display:flex;overflow:hidden}.shell-sidebar{background:var(--sidebar-bg);width:240px;color:var(--sidebar-text);flex-direction:column;flex-shrink:0;gap:4px;padding:16px 12px;display:flex}.shell-brand{color:var(--sidebar-text);padding:8px 10px 16px;font-size:15px;font-weight:600}.shell-nav-link{color:var(--sidebar-text-muted);border-radius:8px;padding:8px 10px;font-size:13px;font-weight:500;text-decoration:none;display:block}.shell-nav-link:hover,.shell-nav-link.active{background:var(--sidebar-active);color:var(--sidebar-text)}.shell-spacer{flex:1}.shell-user{color:var(--sidebar-text-muted);border-top:1px solid #ffffff14;padding-top:12px;font-size:12px}.shell-user strong{color:var(--sidebar-text);margin-bottom:2px;font-size:13px;display:block}.shell-logout{color:var(--sidebar-text-muted);background:0 0;border:none;padding:6px 0 0;font-size:12px;text-decoration:underline}.shell-main{background:var(--bg);flex-direction:column;flex:1;min-width:0;display:flex}.page{height:100%;padding:24px 32px;overflow-y:auto}.page-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.page-title{font-size:18px;font-weight:600}.page-subtitle{color:var(--text-muted);margin-top:4px;font-size:13px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.btn{border:1px solid var(--border);background:var(--surface);border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:500;display:inline-flex}.btn:hover{background:var(--surface-alt)}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-danger{color:var(--danger);border-color:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}.input,.textarea,.select{border:1px solid var(--border);background:var(--surface);width:100%;color:var(--text);border-radius:8px;padding:8px 10px}.field{flex-direction:column;gap:4px;margin-bottom:12px;display:flex}.field label{color:var(--text-muted);font-size:12px;font-weight:600}table.data-table{border-collapse:collapse;width:100%;font-size:13px}table.data-table th{text-align:left;color:var(--text-muted);letter-spacing:.02em;border-bottom:1px solid var(--border);padding:8px 10px;font-size:12px;font-weight:600}table.data-table td{border-bottom:1px solid var(--border);vertical-align:top;padding:10px}.badge{background:var(--surface-alt);color:var(--text-muted);border-radius:999px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.error-banner{border:1px solid var(--danger);color:var(--danger);background:#b3261e1a;border-radius:8px;margin-bottom:12px;padding:8px 12px;font-size:13px}.empty-state{color:var(--text-muted);text-align:center;padding:24px;font-size:13px}.login-page{background:var(--bg);justify-content:center;align-items:center;width:100vw;height:100vh;display:flex}.login-card{width:340px}.login-title{margin-bottom:2px;font-size:17px;font-weight:600}.login-subtitle{color:var(--text-muted);margin-bottom:20px;font-size:13px}.chat-layout{height:100%;display:flex}.chat-conversations{border-right:1px solid var(--border);flex-shrink:0;width:220px;padding:12px;overflow-y:auto}.conv-row{border-radius:8px;align-items:center;margin-bottom:2px;padding-right:2px;display:flex}.conv-row:hover,.conv-row.active{background:var(--surface-alt)}.conv-select{min-width:0;color:var(--text-muted);text-align:left;background:0 0;border:none;flex:1;align-items:center;gap:6px;padding:8px 4px 8px 10px;font-size:13px;display:flex}.conv-row.active .conv-select{color:var(--text);font-weight:600}.conv-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.conv-pin-dot{background:var(--accent);border-radius:50%;flex-shrink:0;width:5px;height:5px}.conv-actions{opacity:0;flex-shrink:0;gap:1px;display:flex}.conv-row:hover .conv-actions,.conv-row.active .conv-actions{opacity:1}.conv-action{color:var(--text-muted);background:0 0;border:none;border-radius:5px;padding:5px 4px;font-size:13px;line-height:1}.conv-action:hover{color:var(--text);background:var(--border)}.chat-main{flex-direction:column;flex:1;min-width:0;display:flex}.chat-messages{flex-direction:column;flex:1;gap:14px;padding:24px;display:flex;overflow-y:auto}.chat-bubble-row{display:flex}.chat-bubble-row.user{justify-content:flex-end}.chat-bubble{white-space:pre-wrap;border-radius:14px;max-width:640px;padding:10px 14px;font-size:14px}.chat-bubble.assistant{background:var(--bubble-assistant);color:var(--bubble-assistant-text);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-bubble.user{background:var(--bubble-user);color:var(--bubble-user-text);border-bottom-right-radius:4px}.chat-bubble .md{white-space:normal}.chat-bubble .md>:first-child{margin-top:0}.chat-bubble .md>:last-child{margin-bottom:0}.chat-bubble .md p{margin:0 0 8px}.chat-bubble .md ul,.chat-bubble .md ol{margin:0 0 8px;padding-left:20px}.chat-bubble .md li{margin-bottom:2px}.chat-bubble .md h1,.chat-bubble .md h2,.chat-bubble .md h3,.chat-bubble .md h4{margin:12px 0 6px;font-size:14px;font-weight:600}.chat-bubble .md code{background:var(--surface-alt);border-radius:4px;padding:1px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px}.chat-bubble .md pre{background:var(--surface-alt);border-radius:8px;margin:0 0 8px;padding:10px 12px;overflow-x:auto}.chat-bubble .md pre code{background:0 0;padding:0}.chat-bubble .md table{border-collapse:collapse;margin:0 0 8px;font-size:13px;display:block;overflow-x:auto}.chat-bubble .md th,.chat-bubble .md td{border:1px solid var(--border);text-align:left;padding:4px 8px}.chat-bubble .md a{text-decoration:underline}.chat-composer{border-top:1px solid var(--border);gap:10px;padding:16px 24px;display:flex}.chat-composer textarea{resize:none;flex:1;min-height:44px;max-height:160px}.chat-toolbar{color:var(--text-muted);align-items:center;gap:16px;padding:8px 24px 0;font-size:12px;display:flex}.chat-toolbar-item{align-items:center;gap:6px;display:flex}.chat-model-select{width:auto;padding:4px 8px;font-size:12px}.chat-budget{font-variant-numeric:tabular-nums;margin-left:auto}.chat-budget.warn{color:#9a6b00}.chat-budget.over{color:var(--danger);font-weight:600}.chat-options-toggle{width:100%;color:var(--text-muted);text-align:left;background:0 0;border:none;padding:0 0 8px 2px;font-size:12px;text-decoration:underline}.chat-options{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:10px;margin-bottom:12px;padding:10px;display:flex}.chat-options-title{font-size:13px;font-weight:600}.chat-options-hint,.chat-option small{color:var(--text-muted);font-size:11px;line-height:1.35;display:block}.chat-option{align-items:flex-start;gap:6px;font-size:12px;display:flex}.chat-option input{flex-shrink:0;margin-top:2px}.chat-option-field{color:var(--text-muted);flex-direction:column;gap:4px;font-size:12px;font-weight:600;display:flex}.chat-badges{gap:6px;padding:10px 24px 0;display:flex}.chat-invitations,.chat-participants{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:8px;margin-bottom:12px;padding:10px;display:flex}.chat-participants{margin:10px 24px 0}.chat-invitation{justify-content:space-between;align-items:center;gap:8px;font-size:12px;display:flex}.chat-invitation small{color:var(--text-muted);font-size:11px;display:block}.chat-participant-list{margin:0;padding:0;font-size:13px;list-style:none}.chat-participant-list li{justify-content:space-between;align-items:center;padding:3px 0;display:flex}.chat-participant-list em{color:var(--text-muted);font-size:11px;font-style:normal}.chat-invite-row{align-items:center;gap:6px;display:flex}.badge-button{cursor:pointer;border:none}.chat-pending{flex-wrap:wrap;gap:6px;padding:8px 24px 0;display:flex}.chat-chip{background:var(--surface-alt);border:1px solid var(--border);color:var(--text);text-overflow:ellipsis;white-space:nowrap;border-radius:999px;align-items:center;gap:5px;max-width:260px;padding:3px 10px;font-size:12px;text-decoration:none;display:inline-flex;overflow:hidden}.chat-chip-x{color:var(--text-muted);background:0 0;border:none;padding:0 0 0 2px;font-size:15px;line-height:1}.chat-attach{align-self:flex-end;padding:8px 12px;font-size:15px}.chat-msg-attachments{flex-wrap:wrap;gap:6px;margin-bottom:6px;display:flex}