*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#050507;--panel:#0c0c10;--panel-hi:#13131a;--border:#1a1a22;--border-hi:#2a2a35;
  --text:#e8e8ec;--text-dim:#8a8a94;--text-faint:#5a5a64;
  --accent:#4f6aff;--accent-hi:#6b82ff;--bubble:#15151c;
  --radius:10px;--radius-sm:6px;--sidebar-w:260px;--sidebar-w-collapsed:60px;
}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:'Sora',system-ui,-apple-system,sans-serif;font-size:14.5px;line-height:1.6;overflow:hidden}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hi)}
button,textarea,input{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;outline:none}
button{cursor:pointer}

.app{display:flex;height:100vh}

.sidebar{width:var(--sidebar-w);background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width 0.18s ease;flex-shrink:0;overflow:hidden}
.sidebar.collapsed{width:var(--sidebar-w-collapsed)}
.sidebar-top{display:flex;align-items:center;padding:12px;height:56px;gap:6px;border-bottom:1px solid var(--border);flex-shrink:0}
.icon-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-dim);flex-shrink:0;transition:background 0.1s,color 0.1s}
.icon-btn:hover{background:var(--panel-hi);color:var(--text)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand{font-size:18px;font-weight:600;letter-spacing:-0.5px;flex:1;white-space:nowrap;overflow:hidden;padding-left:4px}
.sidebar.collapsed .brand,.sidebar.collapsed .new-chat-text,.sidebar.collapsed .conv-section-label,.sidebar.collapsed .conv-list,.sidebar.collapsed .foot-links{display:none}

.new-chat{margin:8px;padding:10px 12px;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);display:flex;align-items:center;gap:10px;color:var(--text);font-size:13.5px;white-space:nowrap;overflow:hidden;flex-shrink:0}
.new-chat:hover{background:var(--panel-hi);border-color:var(--border-hi)}
.new-chat svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.sidebar.collapsed .new-chat{justify-content:center;padding:10px;margin:8px auto;width:36px;height:36px}

.conv-section-label{padding:14px 16px 6px;font-size:10px;font-family:'DM Mono',monospace;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.1em}
.conv-list{flex:1;overflow-y:auto;padding:0 8px 8px}
.conv-item{padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:1px}
.conv-item:hover,.conv-item.active{background:var(--panel-hi);color:var(--text)}

.foot-links{padding:12px 16px;border-top:1px solid var(--border);display:flex;gap:12px;font-size:11px;font-family:'DM Mono',monospace;color:var(--text-faint);white-space:nowrap;flex-shrink:0}
.foot-links a{color:var(--text-faint)}
.foot-links a:hover{color:var(--text-dim)}

.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}

.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 24px 60px}
.greeting{font-size:42px;font-weight:500;letter-spacing:-1.5px;margin-bottom:8px;text-align:center;background:linear-gradient(135deg,#fff 10%,#8aa0ff 90%);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.subtitle{font-family:'DM Mono',monospace;font-size:13px;color:var(--text-faint);margin-bottom:36px;text-align:center}
.empty-composer-wrap,.bottom-composer-wrap{width:100%;max-width:760px;margin:0 auto}
.bottom-composer-wrap{padding:0 24px}

.messages{flex:1;overflow-y:auto;scroll-behavior:smooth}
.messages-inner{max-width:760px;margin:0 auto;padding:24px 24px 32px}

.msg{margin-bottom:22px}
.msg.user{display:flex;justify-content:flex-end}
.msg.user .content{background:var(--bubble);border:1px solid var(--border);padding:10px 16px;border-radius:18px;border-bottom-right-radius:6px;max-width:78%;white-space:pre-wrap;word-wrap:break-word}
.msg.assistant .content{white-space:pre-wrap;word-wrap:break-word;color:var(--text)}
.msg.assistant.streaming .content::after{content:'';display:inline-block;width:7px;height:14px;background:var(--accent);margin-left:3px;vertical-align:text-bottom;animation:blink 1s steps(2,start) infinite;border-radius:1px}
@keyframes blink{to{visibility:hidden}}

.composer-region{padding:12px 24px 14px}
.composer{max-width:760px;margin:0 auto;background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:8px 8px 8px 18px;display:flex;align-items:flex-end;gap:8px;transition:border-color 0.15s}
.composer:focus-within{border-color:var(--border-hi)}
.composer textarea{flex:1;resize:none;max-height:200px;padding:8px 0;line-height:1.5;background:transparent}
.composer textarea::placeholder{color:var(--text-faint)}
.composer textarea:disabled{opacity:0.5}
#send-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;transition:background 0.1s}
#send-btn:hover{background:var(--accent-hi)}
#send-btn:disabled{background:var(--panel-hi);color:var(--text-faint);cursor:not-allowed}
#send-btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}

.ai-warning{text-align:center;padding:0 24px 6px;font-family:'DM Mono',monospace;font-size:10.5px;color:var(--text-faint);max-width:760px;margin:0 auto;line-height:1.5}
.meta-bar{display:flex;justify-content:center;gap:18px;padding:4px 24px 12px;font-family:'DM Mono',monospace;font-size:10px;color:var(--text-faint)}

.doc{max-width:680px;margin:60px auto;padding:0 24px}
.doc h1{font-size:28px;margin-bottom:18px;font-weight:600;letter-spacing:-1px}
.doc p{margin-bottom:14px;color:var(--text-dim);line-height:1.7}
.doc .back{display:inline-block;margin-top:16px;font-family:'DM Mono',monospace;font-size:12px}

@media(max-width:760px){
  .sidebar{position:fixed;z-index:10;height:100%;transform:translateX(-100%);transition:transform 0.2s ease,width 0s}
  .sidebar.open{transform:translateX(0)}
  .sidebar.collapsed{transform:translateX(-100%);width:var(--sidebar-w)}
  .greeting{font-size:32px}
  .messages-inner{padding:16px 14px 24px}
  .composer-region,.bottom-composer-wrap{padding-left:14px;padding-right:14px}
}

.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:24px;animation:fadein 0.2s ease}
@keyframes fadein{from{opacity:0}to{opacity:1}}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:14px;max-width:520px;width:100%;padding:32px;max-height:90vh;overflow-y:auto}
.modal h2{font-size:22px;font-weight:600;margin-bottom:10px;letter-spacing:-0.5px}
.modal p{color:var(--text-dim);margin-bottom:14px;line-height:1.6}
.modal ul{margin:0 0 18px 18px;color:var(--text-dim)}
.modal li{margin-bottom:8px;line-height:1.55;font-size:13.5px}
.modal-links{font-size:12.5px;color:var(--text-faint);font-family:'DM Mono',monospace;margin-bottom:24px}
.modal-links a{color:var(--text-dim)}
.modal-links a:hover{color:var(--accent)}
.modal-accept{width:100%;background:var(--accent);color:#fff;padding:12px;border-radius:var(--radius-sm);font-weight:500;font-size:14px;transition:background 0.1s}
.modal-accept:hover{background:var(--accent-hi)}

.modal-backdrop[hidden]{display:none}
.terminated{max-width:600px;margin:80px auto;padding:0 24px;text-align:center}
.terminated h3{font-size:24px;font-weight:600;margin-bottom:14px;color:var(--danger)}
.terminated p{color:var(--text-dim);line-height:1.7}
.violation-warn{color:var(--danger) !important}

body:has(.doc){overflow:auto;height:auto}
.doc h1{font-size:32px;letter-spacing:-1px;margin-bottom:8px}

.reset-btn{max-width:280px;margin:24px auto 0;display:block}

.composer-tool{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:50%;color:var(--text-faint);background:transparent;flex-shrink:0;align-self:flex-end;margin-bottom:1px;transition:background 0.1s,color 0.1s}
.composer-tool:hover{background:var(--panel-hi);color:var(--text-dim)}
.composer-tool.active{background:rgba(79,106,255,0.15);color:var(--accent-hi)}

.msg.assistant .content h1{font-size:22px;font-weight:600;margin:14px 0 8px;letter-spacing:-0.4px}
.msg.assistant .content h2{font-size:18px;font-weight:600;margin:14px 0 8px;letter-spacing:-0.3px}
.msg.assistant .content h3{font-size:16px;font-weight:600;margin:12px 0 6px}
.msg.assistant .content p{margin-bottom:10px}
.msg.assistant .content p:last-child{margin-bottom:0}
.msg.assistant .content ul{margin:6px 0 12px 22px}
.msg.assistant .content li{margin-bottom:4px}
.msg.assistant .content code.inline{background:var(--panel-hi);padding:1px 6px;border-radius:4px;font-family:'DM Mono',monospace;font-size:13px;border:1px solid var(--border)}
.msg.assistant .content pre{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:14px 16px;margin:10px 0;overflow-x:auto;font-family:'DM Mono',monospace;font-size:13px;line-height:1.55}
.msg.assistant .content pre code{font-family:inherit;color:var(--text)}
.msg.assistant .content pre[data-lang]::before,.msg.assistant .content pre code[data-lang]::before{content:attr(data-lang);display:block;font-size:10px;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:8px}
.msg.assistant .content a{color:var(--accent-hi);border-bottom:1px solid rgba(107,130,255,0.3)}
.msg.assistant .content a:hover{border-bottom-color:var(--accent-hi)}
.msg.assistant .content strong{color:#fff;font-weight:600}

.msg-meta{font-family:'DM Mono',monospace;font-size:10.5px;color:var(--text-faint);margin-bottom:8px;text-transform:lowercase;letter-spacing:0.05em}

.sources{margin-top:14px;padding-top:12px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}
.sources-label{font-family:'DM Mono',monospace;font-size:10px;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:4px}
.sources a{display:block;font-size:12.5px;color:var(--text-dim);padding:4px 0;border-bottom:none !important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sources a:hover{color:var(--accent-hi)}

#stop-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bubble);color:var(--text);border:1px solid var(--border);border-radius:50%;flex-shrink:0;transition:background 0.1s}
#stop-btn:hover{background:var(--panel-hi);border-color:var(--border-hi)}
#stop-btn[hidden]{display:none}

#stop-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bubble);color:var(--text);border:1px solid var(--border);border-radius:50%;flex-shrink:0;align-self:flex-end;margin-bottom:1px;transition:background 0.1s}
#stop-btn:hover{background:var(--panel-hi);border-color:var(--border-hi)}
#stop-btn[hidden]{display:none}

.msg{position:relative}
.msg-actions{display:flex;gap:4px;margin-top:8px;opacity:0;transition:opacity 0.15s}
.msg.assistant:hover .msg-actions{opacity:1}
.msg-action{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:var(--text-faint);background:transparent;transition:background 0.1s,color 0.1s}
.msg-action:hover{background:var(--panel-hi);color:var(--text-dim)}

.msg.user{position:relative;padding-right:36px}
.msg-edit{position:absolute;right:0;bottom:6px;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:var(--text-faint);background:transparent;opacity:0;transition:opacity 0.15s,background 0.1s,color 0.1s}
.msg.user:hover .msg-edit{opacity:1}
.msg-edit:hover{background:var(--panel-hi);color:var(--text-dim)}
.edit-area{width:100%;background:var(--bubble);border:1px solid var(--border-hi);border-radius:12px;padding:10px 14px;color:var(--text);font-family:inherit;font-size:inherit;resize:vertical;min-height:42px}
.edit-area:focus{border-color:var(--accent)}
.edit-actions{display:flex;gap:6px;justify-content:flex-end;margin-top:6px}
.edit-actions button{padding:6px 14px;border-radius:6px;font-size:13px}
.edit-cancel{background:var(--panel-hi);color:var(--text-dim);border:1px solid var(--border)}
.edit-cancel:hover{background:var(--panel)}
.edit-save{background:var(--accent);color:#fff}
.edit-save:hover{background:var(--accent-hi)}

.conv-item{display:flex;align-items:center;gap:6px;position:relative}
.conv-label{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-menu{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:4px;color:var(--text-faint);background:transparent;opacity:0;transition:opacity 0.15s,background 0.1s,color 0.1s;flex-shrink:0}
.conv-item:hover .conv-menu,.conv-item.active .conv-menu{opacity:1}
.conv-menu:hover{background:var(--panel);color:var(--text-dim)}
.conv-dropdown{position:absolute;right:8px;top:100%;background:var(--panel-hi);border:1px solid var(--border-hi);border-radius:6px;padding:4px;display:flex;flex-direction:column;min-width:120px;z-index:5;box-shadow:0 8px 24px rgba(0,0,0,0.5)}
.conv-dropdown button{padding:6px 12px;text-align:left;border-radius:4px;color:var(--text-dim);font-size:13px;background:transparent}
.conv-dropdown button:hover{background:var(--bg);color:var(--text)}
.conv-dropdown button[data-act="delete"]:hover{color:var(--danger)}

.msg.assistant .content table{border-collapse:collapse;margin:10px 0;font-size:13.5px;width:100%}
.msg.assistant .content th,.msg.assistant .content td{border:1px solid var(--border);padding:8px 12px;text-align:left}
.msg.assistant .content th{background:var(--panel-hi);font-weight:600}
.msg.assistant .content tr:nth-child(even) td{background:rgba(255,255,255,0.015)}
.msg.assistant .content blockquote{border-left:3px solid var(--accent);padding:6px 14px;margin:10px 0;color:var(--text-dim);background:rgba(79,106,255,0.05);border-radius:0 6px 6px 0}

#stop-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bubble);color:var(--text);border:1px solid var(--border);border-radius:50%;flex-shrink:0;align-self:flex-end;margin-bottom:1px;transition:background 0.1s}
#stop-btn:hover{background:var(--panel-hi);border-color:var(--border-hi)}
#stop-btn[hidden]{display:none}

.msg{position:relative}
.msg-actions{display:flex;gap:4px;margin-top:8px;opacity:0;transition:opacity 0.15s}
.msg.assistant:hover .msg-actions{opacity:1}
.msg-action{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:var(--text-faint);background:transparent;transition:background 0.1s,color 0.1s}
.msg-action:hover{background:var(--panel-hi);color:var(--text-dim)}

.msg.user{position:relative;padding-right:36px}
.msg-edit{position:absolute;right:0;bottom:6px;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:var(--text-faint);background:transparent;opacity:0;transition:opacity 0.15s,background 0.1s,color 0.1s}
.msg.user:hover .msg-edit{opacity:1}
.msg-edit:hover{background:var(--panel-hi);color:var(--text-dim)}
.edit-area{width:100%;background:var(--bubble);border:1px solid var(--border-hi);border-radius:12px;padding:10px 14px;color:var(--text);font-family:inherit;font-size:inherit;resize:vertical;min-height:42px}
.edit-area:focus{border-color:var(--accent)}
.edit-actions{display:flex;gap:6px;justify-content:flex-end;margin-top:6px}
.edit-actions button{padding:6px 14px;border-radius:6px;font-size:13px}
.edit-cancel{background:var(--panel-hi);color:var(--text-dim);border:1px solid var(--border)}
.edit-cancel:hover{background:var(--panel)}
.edit-save{background:var(--accent);color:#fff}
.edit-save:hover{background:var(--accent-hi)}

.conv-item{display:flex;align-items:center;gap:6px;position:relative}
.conv-label{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-menu{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:4px;color:var(--text-faint);background:transparent;opacity:0;transition:opacity 0.15s,background 0.1s,color 0.1s;flex-shrink:0}
.conv-item:hover .conv-menu,.conv-item.active .conv-menu{opacity:1}
.conv-menu:hover{background:var(--panel);color:var(--text-dim)}
.conv-dropdown{position:absolute;right:8px;top:100%;background:var(--panel-hi);border:1px solid var(--border-hi);border-radius:6px;padding:4px;display:flex;flex-direction:column;min-width:120px;z-index:5;box-shadow:0 8px 24px rgba(0,0,0,0.5)}
.conv-dropdown button{padding:6px 12px;text-align:left;border-radius:4px;color:var(--text-dim);font-size:13px;background:transparent}
.conv-dropdown button:hover{background:var(--bg);color:var(--text)}
.conv-dropdown button[data-act="delete"]:hover{color:var(--danger)}

.msg.assistant .content table{border-collapse:collapse;margin:10px 0;font-size:13.5px;width:100%}
.msg.assistant .content th,.msg.assistant .content td{border:1px solid var(--border);padding:8px 12px;text-align:left}
.msg.assistant .content th{background:var(--panel-hi);font-weight:600}
.msg.assistant .content tr:nth-child(even) td{background:rgba(255,255,255,0.015)}
.msg.assistant .content blockquote{border-left:3px solid var(--accent);padding:6px 14px;margin:10px 0;color:var(--text-dim);background:rgba(79,106,255,0.05);border-radius:0 6px 6px 0}