/* 聊天指挥台 — 商务克制风格，桌面 / iPad / 手机 通用 */

:root{
  --bg:#f4f5f7;
  --panel:#ffffff;
  --side:#1c2531;
  --side-2:#243040;
  --side-text:#c9d3e0;
  --line:#e3e6ea;
  --text:#1d2530;
  --text-2:#5b6672;
  --muted:#8a949f;
  --accent:#2f6f8f;
  --accent-soft:#e8f0f4;
  --user:#26313f;
  --ok:#2e7d5b;
  --warn:#b4681c;
  --err:#b3392f;
  --radius:10px;
  --mono:"SFMono-Regular",Consolas,"Cascadia Mono","Microsoft YaHei Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:15px;line-height:1.6;
  overscroll-behavior:none;
}
[hidden]{display:none !important}
button{font-family:inherit;font-size:inherit;cursor:pointer}

/* ---------------- 登录闸 ---------------- */
.gate{position:fixed;inset:0;background:var(--side);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.gate-card{width:100%;max-width:330px;background:var(--panel);border-radius:14px;padding:30px 26px;box-shadow:0 18px 50px rgba(0,0,0,.35)}
.gate-brand{font-size:19px;font-weight:650;letter-spacing:.5px}
.gate-sub{color:var(--muted);font-size:12.5px;margin:6px 0 22px}
.gate-input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:var(--radius);font-size:16px;outline:none;background:#fbfcfd}
.gate-input:focus{border-color:var(--accent);background:#fff}
.gate-btn{width:100%;margin-top:14px;padding:11px;border:0;border-radius:var(--radius);background:var(--side);color:#fff;font-weight:600;letter-spacing:1px}
.gate-btn:active{opacity:.85}
.gate-err{color:var(--err);font-size:12.5px;min-height:18px;margin-top:10px;text-align:center}

/* ---------------- 布局 ---------------- */
.app{display:flex;height:100dvh;overflow:hidden}

.side{
  width:262px;flex:0 0 262px;background:var(--side);color:var(--side-text);
  display:flex;flex-direction:column;z-index:40;
}
.side-top{padding:16px 14px 10px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand{font-size:14.5px;font-weight:650;color:#fff;letter-spacing:1.5px;margin-bottom:12px}
.btn-new{
  width:100%;padding:9px;border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);
  background:var(--side-2);color:#e8eef5;font-size:13.5px;
}
.btn-new:active{background:#2c3a4d}

.sess-list{flex:1;overflow-y:auto;padding:8px}
.sess{
  padding:9px 11px;border-radius:var(--radius);margin-bottom:3px;cursor:pointer;
  display:flex;align-items:flex-start;gap:8px;
}
.sess:hover{background:rgba(255,255,255,.05)}
.sess.on{background:rgba(255,255,255,.11)}
.sess-body{flex:1;min-width:0}
.sess-t{font-size:13.5px;color:#eef2f7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sess-c{font-size:11px;color:#7f8b9a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.sess-del{opacity:0;border:0;background:none;color:#7f8b9a;padding:0 3px;font-size:13px;flex:0 0 auto}
.sess:hover .sess-del,.sess.on .sess-del{opacity:1}
.sess-live{width:6px;height:6px;border-radius:50%;background:var(--ok);flex:0 0 auto;margin-top:7px;animation:pulse 1.4s infinite}

.side-foot{padding:10px 14px;border-top:1px solid rgba(255,255,255,.07);display:flex;justify-content:space-between;align-items:center;font-size:11.5px}
.muted{color:#6f7b8a;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.link-btn{background:none;border:0;color:#8fa3b8;font-size:11.5px;padding:0;text-decoration:underline;flex:0 0 auto}

.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}

/* ---------------- 顶栏 ---------------- */
.topbar{
  display:flex;align-items:center;gap:10px;padding:9px 14px;
  background:var(--panel);border-bottom:1px solid var(--line);
  padding-top:calc(9px + env(safe-area-inset-top));
}
.icon-btn{background:none;border:0;color:var(--text-2);padding:6px;display:none;line-height:0;border-radius:6px}
.topbar-mid{flex:1;min-width:0}
.conv-title{font-size:14.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-meta{display:flex;gap:6px;margin-top:3px;align-items:center;flex-wrap:nowrap;overflow:hidden}
.chip{
  border:1px solid var(--line);background:#fafbfc;color:var(--text-2);
  border-radius:20px;padding:2px 9px;font-size:11.5px;max-width:60vw;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.7;
}
.chip-sel{-webkit-appearance:none;appearance:none;padding-right:9px;flex:0 0 auto}
.topbar-right{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot-idle{background:#cfd5db}
.dot-busy{background:var(--ok);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.28}}
.btn-stop{border:1px solid #e4b8b4;background:#fdf3f2;color:var(--err);border-radius:20px;padding:3px 12px;font-size:12px}

/* ---------------- 消息区 ---------------- */
.messages{flex:1;overflow-y:auto;padding:18px 0 8px;-webkit-overflow-scrolling:touch}
.wrap{max-width:820px;margin:0 auto;padding:0 18px}

.empty{max-width:820px;margin:70px auto;padding:0 24px;text-align:center}
.empty-title{font-size:16px;font-weight:600;color:var(--text-2)}
.empty-sub{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.7}

.msg{margin-bottom:16px}
.msg-user{display:flex;justify-content:flex-end}
.bubble-user{
  background:var(--user);color:#f0f3f6;border-radius:14px 14px 3px 14px;
  padding:9px 14px;max-width:80%;white-space:pre-wrap;word-break:break-word;font-size:14.5px;
}
.bubble-ai{
  background:var(--panel);border:1px solid var(--line);border-radius:3px 14px 14px 14px;
  padding:11px 15px;word-break:break-word;font-size:14.5px;
}
.bubble-ai>*:first-child{margin-top:0}
.bubble-ai>*:last-child{margin-bottom:0}
.bubble-ai p{margin:.5em 0}
.bubble-ai h1,.bubble-ai h2,.bubble-ai h3{font-size:15px;margin:1em 0 .4em;font-weight:650}
.bubble-ai ul,.bubble-ai ol{margin:.5em 0;padding-left:1.4em}
.bubble-ai li{margin:.2em 0}
.bubble-ai code{background:#f1f3f5;border-radius:4px;padding:1px 5px;font-family:var(--mono);font-size:12.8px}
.bubble-ai pre{background:#1e252e;color:#dfe6ee;border-radius:8px;padding:11px 13px;overflow-x:auto;margin:.6em 0}
.bubble-ai pre code{background:none;color:inherit;padding:0;font-size:12.5px;line-height:1.55}
.bubble-ai a{color:var(--accent)}
.bubble-ai table{border-collapse:collapse;width:100%;font-size:13px;margin:.6em 0;display:block;overflow-x:auto}
.bubble-ai th,.bubble-ai td{border:1px solid var(--line);padding:5px 9px;text-align:left}
.cursor::after{content:"▍";color:var(--accent);animation:pulse 1s infinite}

/* 工具卡 */
.tool{
  border:1px solid var(--line);background:#fbfcfd;border-radius:9px;
  margin:7px 0;font-size:12.8px;overflow:hidden;
}
.tool-head{display:flex;align-items:center;gap:8px;padding:7px 11px;cursor:pointer;color:var(--text-2)}
.tool-head:active{background:#f3f5f7}
.tool-name{font-weight:600;color:var(--text);flex:0 0 auto}
.tool-brief{color:var(--muted);font-family:var(--mono);font-size:11.8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.tool-arrow{color:var(--muted);flex:0 0 auto;transition:transform .15s}
.tool.open .tool-arrow{transform:rotate(90deg)}
.tool-body{display:none;border-top:1px solid var(--line);padding:9px 11px;background:#fff}
.tool.open .tool-body{display:block}
.tool-sec{font-size:11px;color:var(--muted);margin:6px 0 3px;letter-spacing:.5px}
.tool-sec:first-child{margin-top:0}
.tool pre{background:#f6f7f9;border:1px solid var(--line);border-radius:6px;padding:8px 10px;overflow-x:auto;margin:0;font-family:var(--mono);font-size:12px;line-height:1.5;white-space:pre-wrap;word-break:break-word;max-height:340px;overflow-y:auto}
.tool.err .tool-name{color:var(--err)}
.tool.err{border-color:#eccbc7;background:#fdf6f5}

.think{border-left:2px solid #dfe4e9;padding:3px 0 3px 11px;margin:7px 0;color:var(--muted);font-size:12.8px;white-space:pre-wrap}
.sys{color:var(--muted);font-size:11.8px;text-align:center;margin:10px 0}
.errbox{border:1px solid #eccbc7;background:#fdf6f5;color:var(--err);border-radius:9px;padding:9px 13px;font-size:13px;white-space:pre-wrap;margin:7px 0;font-family:var(--mono)}

/* ---------------- 输入区 ---------------- */
.composer{
  background:var(--panel);border-top:1px solid var(--line);
  padding:10px 0 calc(6px + env(safe-area-inset-bottom));
}
.composer-inner{max-width:820px;margin:0 auto;padding:0 18px;display:flex;gap:9px;align-items:flex-end}
.input{
  flex:1;resize:none;border:1px solid var(--line);border-radius:12px;
  padding:10px 13px;font-family:inherit;font-size:16px;line-height:1.5;
  max-height:170px;outline:none;background:#fbfcfd;color:var(--text);
}
.input:focus{border-color:var(--accent);background:#fff}
.btn-send{
  flex:0 0 auto;width:40px;height:40px;border:0;border-radius:50%;
  background:var(--side);color:#fff;display:flex;align-items:center;justify-content:center;
}
.btn-send:disabled{background:#c4cbd3}
.composer-hint{max-width:820px;margin:5px auto 0;padding:0 18px;font-size:11px;color:var(--muted)}

/* ---------------- 目录弹层 ---------------- */
.modal{position:fixed;inset:0;background:rgba(20,26,34,.5);display:flex;align-items:center;justify-content:center;z-index:80;padding:18px}
.modal-card{background:var(--panel);border-radius:13px;width:100%;max-width:430px;overflow:hidden;box-shadow:0 18px 50px rgba(0,0,0,.28)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid var(--line)}
.modal-title{font-weight:650;font-size:14.5px}
.modal-head .icon-btn{display:block}
.modal-body{padding:14px 16px}
.field-label{display:block;font-size:11.5px;color:var(--muted);margin:11px 0 5px;letter-spacing:.5px}
.field-label:first-child{margin-top:0}
.field-sel{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:var(--radius);font-size:15px;background:#fbfcfd;color:var(--text);font-family:inherit}
.dir-current{font-family:var(--mono);font-size:12.3px;background:#f6f7f9;border:1px solid var(--line);border-radius:var(--radius);padding:8px 11px;word-break:break-all;color:var(--text-2)}
.modal-foot{display:flex;gap:9px;justify-content:space-between;padding:12px 16px;border-top:1px solid var(--line);background:#fafbfc}
.btn-primary{border:0;background:var(--side);color:#fff;border-radius:var(--radius);padding:9px 18px;font-size:14px}
.btn-ghost{border:1px solid var(--line);background:#fff;color:var(--text-2);border-radius:var(--radius);padding:9px 14px;font-size:14px}

.scrim{position:fixed;inset:0;background:rgba(15,20,27,.45);z-index:35;display:none}

/* ---------------- 动态码 / 安全设置 ---------------- */
.gate-code{margin-top:10px;letter-spacing:5px;text-align:center;font-family:var(--mono);font-size:18px}
.icon-always{display:block !important}

.sec-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}
.sec-row:last-child{border-bottom:0}
.sec-k{font-size:13.5px}
.sec-v{font-size:12.5px;color:var(--muted)}
.sec-on{color:var(--ok);font-weight:600}
.sec-off{color:var(--warn);font-weight:600}
.sec-step{font-size:13px;line-height:1.75;margin:10px 0}
.sec-step b{display:inline-block;min-width:18px}
.sec-key{
  font-family:var(--mono);font-size:15px;letter-spacing:1.5px;word-break:break-all;
  background:#f6f7f9;border:1px solid var(--line);border-radius:var(--radius);
  padding:11px 13px;margin:8px 0;text-align:center;line-height:1.9;user-select:all;
}
.sec-link{
  display:block;text-align:center;background:var(--accent-soft);border:1px solid #cfe0e8;
  color:var(--accent);border-radius:var(--radius);padding:10px;font-size:13.5px;margin:8px 0;text-decoration:none;
}
.sec-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:10px}
.sec-err{color:var(--err);font-size:12.5px;min-height:18px;margin-top:8px}
.sec-btns{display:flex;gap:9px;margin-top:12px}
.sec-btns>*{flex:1}

/* ---------------- 危险命令确认卡 ---------------- */
.guard{
  border:1px solid #e0b98f;background:#fdf8f1;border-radius:11px;
  padding:12px 14px;margin:10px 0;box-shadow:0 2px 10px rgba(180,104,28,.09);
}
.guard-top{display:flex;align-items:center;gap:7px;font-weight:650;color:var(--warn);font-size:14px}
.guard-why{font-size:13px;color:var(--text);margin:7px 0 2px}
.guard-cmd{
  font-family:var(--mono);font-size:12.3px;background:#fff;border:1px solid #ecdcc6;
  border-radius:7px;padding:9px 11px;margin:8px 0;white-space:pre-wrap;word-break:break-all;
  max-height:200px;overflow-y:auto;
}
.guard-cwd{font-size:11.5px;color:var(--muted);font-family:var(--mono);word-break:break-all}
.guard-btns{display:flex;gap:9px;margin-top:11px}
.guard-btns button{flex:1;border-radius:var(--radius);padding:10px;font-size:14px;font-weight:600;border:0}
.g-yes{background:var(--warn);color:#fff}
.g-no{background:#fff;border:1px solid var(--line) !important;color:var(--text-2)}
.guard-timer{font-size:11.5px;color:var(--muted);text-align:center;margin-top:8px}
.guard.settled{opacity:.62;border-color:var(--line);background:#fafbfc;box-shadow:none}
.guard.settled .guard-btns,.guard.settled .guard-timer{display:none}
.guard-done{font-size:12.5px;margin-top:8px;font-weight:600}
.guard-done.yes{color:var(--ok)}
.guard-done.no{color:var(--err)}

/* ---------------- 手机 / iPad ---------------- */
@media (max-width:860px){
  .icon-btn{display:block}
  .side{
    position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);
    transition:transform .22s ease;box-shadow:2px 0 22px rgba(0,0,0,.2);
    padding-top:env(safe-area-inset-top);
  }
  body.nav-open .side{transform:translateX(0)}
  body.nav-open .scrim{display:block}
  .wrap{padding:0 13px}
  .composer-inner,.composer-hint{padding:0 13px}
  .bubble-user{max-width:88%}
  .messages{padding-top:14px}
  .chip{max-width:44vw}
}
@media (max-width:520px){
  .conv-meta{gap:5px}
  .chip{font-size:11px;padding:2px 8px}
  .empty{margin:44px auto}
}