:root {
  --primary: #4f46e5; --bg: #0e1016; --card: #171a24; --card2: #1f2331;
  --text: #e8eaf2; --muted: #98a0b5; --border: #2a2f40;
  --ok: #22c55e; --danger: #ef4444; --warn: #f59e0b;
  --safe-b: env(safe-area-inset-bottom, 0px);
}
[hidden] { display: none !important; }
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text); min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6; font-size: 15px;
}
.muted { color: var(--muted); } .center { text-align: center; } .tiny { font-size: 12px; }
code { background: var(--card2); padding: 2px 6px; border-radius: 6px; font-size: .85em; word-break: break-all; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 10px var(--primary); display: inline-block; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 11px 18px;
  border-radius: 11px; border: 1px solid var(--border); background: var(--primary); color: #fff;
  font-size: 15px; font-family: inherit; cursor: pointer; min-height: 44px; }
.btn:active { filter: brightness(.92); }
.btn-block { width: 100%; } .btn-sm { min-height: 34px; padding: 6px 12px; font-size: 13px; border-radius: 9px; }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-send { flex: 0 0 auto; padding: 0 18px; }
.btn:disabled { opacity: .5; }

/* ---------- 登录 ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 18px; }
.login-card { width: 100%; max-width: 390px; background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 26px 20px; }
.logo { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 19px; font-weight: 700; margin-bottom: 6px; }
label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 5px; }
input, textarea { width: 100%; padding: 12px 14px; border-radius: 11px; border: 1px solid var(--border);
  background: var(--card2); color: var(--text); font-size: 16px; font-family: inherit; }
input:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--primary) 55%, transparent); }
#lg-codebox { margin-top: 4px; }
#lg-codebox .btn, .login-card > .btn { margin-top: 14px; }
.msg { font-size: 13px; margin: 12px 0 0; min-height: 20px; }
.msg.err { color: var(--danger); } .msg.ok { color: var(--ok); }

/* ---------- 顶栏 ---------- */
.topbar { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 9px;
  padding: 9px 10px; background: var(--card); border-bottom: 1px solid var(--border); }
.topbar b { font-size: 15px; white-space: nowrap; }
.topbar .tiny { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar .ttl { flex: 1; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar .btn-ghost { margin-left: auto; } .topbar .btn-ghost ~ .btn-ghost { margin-left: 0; }

.offline { margin: 12px; padding: 12px 14px; border-radius: 12px; border: 1px solid rgba(245,158,11,.4);
  background: rgba(245,158,11,.12); color: #fcd34d; font-size: 13px; }

/* ---------- 工作区 / 会话 ---------- */
#ws-list { padding: 10px 10px 40px; }
.ws { background: var(--card); border: 1px solid var(--border); border-radius: 14px; margin-bottom: 10px; overflow: hidden; }
.ws-head { display: flex; align-items: center; gap: 10px; padding: 13px 14px; cursor: pointer; }
.ws-name { font-weight: 700; font-size: 15px; }
.ws-path { font-size: 11.5px; color: var(--muted); margin-top: 1px; word-break: break-all; }
.ws-body { flex: 1; min-width: 0; }
.ws-badge { flex: 0 0 auto; font-size: 12px; color: var(--muted); background: var(--card2);
  border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; }
.ws-caret { flex: 0 0 auto; color: var(--muted); font-size: 11px; transition: transform .2s; }
.ws.open .ws-caret { transform: rotate(180deg); }
.ws-items { display: none; border-top: 1px solid var(--border); }
.ws.open .ws-items { display: block; }
.se { display: block; padding: 12px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.se:last-child { border-bottom: 0; }
.se:active { background: var(--card2); }
.se-t { font-size: 14.5px; margin-bottom: 3px; }
.se-m { font-size: 11.5px; color: var(--muted); display: flex; gap: 8px; }
.se-b { color: var(--primary); }

/* ---------- 会话详情 ---------- */
.meta { padding: 8px 12px; font-size: 11.5px; color: var(--muted); border-bottom: 1px solid var(--border);
  display: flex; gap: 10px; flex-wrap: wrap; }
#dt-msgs { padding: 12px 10px 130px; }
.m { margin-bottom: 12px; }
.m-role { font-size: 11px; color: var(--muted); margin-bottom: 4px; }
.m-body { border-radius: 14px; padding: 11px 13px; word-break: break-word; font-size: 14.5px; line-height: 1.62; }
.m.user .m-body { background: var(--primary); color: #fff; border-bottom-right-radius: 5px; margin-left: 12%; }
.m.assistant .m-body { background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 5px; margin-right: 6%; }

/* ---------- 正文里的 markdown 排版 ---------- */
.m-body > :first-child { margin-top: 0; }
.m-body > :last-child { margin-bottom: 0; }
.m-body p { margin: 0 0 9px; }
.m-body h1, .m-body h2, .m-body h3, .m-body h4 { margin: 13px 0 7px; line-height: 1.35; font-weight: 700; }
.m-body h1 { font-size: 18px; } .m-body h2 { font-size: 17px; }
.m-body h3 { font-size: 15.5px; } .m-body h4 { font-size: 15px; }
.m-body ul, .m-body ol { margin: 5px 0 9px; padding-left: 21px; }
.m-body li { margin: 3px 0; }
.m-body blockquote { margin: 8px 0; padding: 6px 12px; border-left: 3px solid var(--primary);
  background: rgba(255,255,255,.035); border-radius: 0 8px 8px 0; color: var(--muted); }
.m-body hr { border: 0; border-top: 1px solid var(--border); margin: 12px 0; }
.m-body code { background: rgba(255,255,255,.1); padding: 1.5px 5px; border-radius: 5px; font-size: .88em; }
.m-body a { color: #a5b4fc; text-decoration: underline; }
.m-body strong { font-weight: 700; }
.m-body del { opacity: .55; }
.m.user .m-body code { background: rgba(255,255,255,.24); }
.m.user .m-body a { color: #fff; }
.m.user .m-body blockquote { border-left-color: rgba(255,255,255,.6); background: rgba(255,255,255,.12); color: #eef; }
.md-code { position: relative; margin: 8px 0; background: #0b0d13; border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 12px; overflow-x: auto; }
.md-code code { background: none; padding: 0; font-size: 12.5px; white-space: pre; font-family: ui-monospace, Consolas, monospace; }
.md-lang { position: absolute; top: 5px; right: 10px; font-size: 10px; color: var(--muted); }
.md-tablewrap { overflow-x: auto; margin: 8px 0; }
.md-table { border-collapse: collapse; font-size: 13px; width: auto; min-width: 100%; }
.md-table th, .md-table td { border: 1px solid var(--border); padding: 6px 9px; text-align: left; vertical-align: top; white-space: nowrap; }
.md-table th { background: rgba(255,255,255,.05); }
.m.user .md-table th, .m.user .md-table td { border-color: rgba(255,255,255,.35); }
.m.user .md-table th { background: rgba(255,255,255,.16); }
.m.user .md-code { background: rgba(0,0,0,.32); border-color: rgba(255,255,255,.25); }
.t { background: var(--card2); border: 1px solid var(--border); border-radius: 12px; padding: 9px 12px;
  font-size: 12.5px; color: var(--muted); font-family: ui-monospace, Consolas, monospace; word-break: break-all; }
.t > summary { cursor: pointer; color: var(--text); font-family: inherit; font-size: 13px; }
.t pre { margin: 8px 0 0; white-space: pre-wrap; word-break: break-all; font-size: 12px; }
.job-log { font-size: 12.5px; color: var(--muted); font-family: ui-monospace, Consolas, monospace;
  padding: 4px 2px; word-break: break-all; }
.job-live { border-left: 2px solid var(--primary); padding-left: 10px; }

/* ---------- 输入条 ---------- */
.composer { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: flex; gap: 8px;
  padding: 9px 10px calc(9px + var(--safe-b)); background: var(--card); border-top: 1px solid var(--border); }
.composer textarea { flex: 1; resize: none; max-height: 120px; font-size: 15px; }

.loading, .empty { text-align: center; color: var(--muted); padding: 44px 0; font-size: 14px; }
.toast { position: fixed; bottom: calc(24px + var(--safe-b)); left: 50%; transform: translateX(-50%) translateY(90px);
  background: var(--text); color: var(--bg); padding: 10px 20px; border-radius: 10px; font-size: 14px;
  opacity: 0; transition: .3s; z-index: 99; max-width: 88vw; text-align: center; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.err { background: var(--danger); color: #fff; }