/* ============================================================
   银河梭织智造 · 数据问答 — Apple 风格界面
   浅色 / 深色自动适配，手机与桌面自适应
   ============================================================ */
:root{
  color-scheme: light dark;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue",
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --bg:#f5f5f7;
  --surface:#ffffff;
  --surface-2:#f5f5f7;
  --ink:#1d1d1f;
  --ink-2:#6e6e73;
  --ink-3:#86868b;
  --line:#d2d2d7;
  --line-soft:#e8e8ed;

  --blue:#0071e3;
  --blue-hover:#0077ed;
  --blue-soft:rgba(0,113,227,.08);
  --green:#34c759;
  --orange:#ff9f0a;
  --red:#ff3b30;

  --nav-bg:rgba(251,251,253,.72);
  --composer-bg:rgba(251,251,253,.82);
  --overlay-bg:rgba(0,0,0,.42);

  --shadow-sm:0 1px 2px rgba(0,0,0,.04), 0 4px 14px rgba(0,0,0,.05);
  --shadow-md:0 8px 30px rgba(0,0,0,.10);
  --shadow-lg:0 20px 60px rgba(0,0,0,.18);

  --r-xl:26px;
  --r-lg:18px;
  --r-md:12px;
  --r-pill:980px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:52px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#000000;
    --surface:#1c1c1e;
    --surface-2:#2c2c2e;
    --ink:#f5f5f7;
    --ink-2:#a1a1a6;
    --ink-3:#8e8e93;
    --line:#38383a;
    --line-soft:#2c2c2e;
    --blue:#0a84ff;
    --blue-hover:#3395ff;
    --blue-soft:rgba(10,132,255,.16);
    --nav-bg:rgba(22,22,23,.72);
    --composer-bg:rgba(22,22,23,.82);
    --overlay-bg:rgba(0,0,0,.6);
    --shadow-sm:none;
    --shadow-md:0 8px 30px rgba(0,0,0,.55);
    --shadow-lg:0 20px 60px rgba(0,0,0,.7);
  }
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 var(--font);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  display:flex;flex-direction:column;overscroll-behavior-y:none;
}
button{font-family:inherit}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.hidden{display:none !important}
::selection{background:var(--blue-soft)}

/* ---------------- 顶部导航（毛玻璃） ---------------- */
.nav{
  flex:0 0 auto;position:sticky;top:0;z-index:20;height:var(--nav-h);
  display:flex;align-items:center;gap:14px;padding:0 22px;
  background:var(--nav-bg);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line-soft);
}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.brand .mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(160deg,#0a84ff,#0060c0);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:600;
  box-shadow:0 1px 3px rgba(0,90,190,.35);
}
.brand .name{
  font-size:15px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.nav-badge{
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
  font-size:12px;color:var(--ink-2);background:var(--surface-2);
  border-radius:var(--r-pill);padding:4px 11px;max-width:230px;
  overflow:hidden;white-space:nowrap;
}
.nav-badge .txt{overflow:hidden;text-overflow:ellipsis}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ink-3);flex:0 0 auto}
.dot.live{background:var(--green);box-shadow:0 0 0 3px rgba(52,199,89,.16)}
.dot.direct{background:var(--orange);box-shadow:0 0 0 3px rgba(255,159,10,.16)}
.dot.off{background:var(--red)}
.nav .spacer{flex:1 1 auto;min-width:0}
.nav-actions{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.nav-btn{
  appearance:none;border:0;background:transparent;color:var(--ink);
  font-size:13px;padding:7px 12px;border-radius:var(--r-pill);cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);white-space:nowrap;
}
.nav-btn:hover{background:rgba(0,0,0,.05)}
.nav-btn:active{transform:scale(.97)}
@media (prefers-color-scheme: dark){ .nav-btn:hover{background:rgba(255,255,255,.1)} }

/* ---------------- 内容区 ---------------- */
.chat{
  flex:1 1 auto;overflow-y:auto;overflow-x:hidden;padding:28px 22px 8px;
  scroll-behavior:smooth;-webkit-overflow-scrolling:touch;
}
.chat::-webkit-scrollbar{width:10px;height:10px}
.chat::-webkit-scrollbar-thumb{background:rgba(0,0,0,.16);border-radius:10px;border:3px solid transparent;background-clip:content-box}
.chat::-webkit-scrollbar-thumb:hover{background:rgba(0,0,0,.3);background-clip:content-box}
.chat::-webkit-scrollbar-track{background:transparent}
@media (prefers-color-scheme: dark){ .chat::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);background-clip:content-box} }

/* 空状态 Hero */
.hero{max-width:760px;margin:6vh auto 0;text-align:center;animation:rise .6s var(--ease) both}
.hero h1{
  margin:0 0 14px;font-size:clamp(30px,5.2vw,52px);line-height:1.06;font-weight:600;letter-spacing:-.021em;
}
.hero .sub{margin:0 auto 34px;max-width:520px;font-size:clamp(15px,1.6vw,19px);color:var(--ink-2);line-height:1.45}
.hero .cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;text-align:left}
.card{
  appearance:none;border:1px solid var(--line-soft);background:var(--surface);color:inherit;
  border-radius:var(--r-lg);padding:16px 18px;cursor:pointer;text-align:left;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:5px;min-height:96px;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:transparent}
.card:active{transform:translateY(0) scale(.99)}
.card .t{font-size:15px;font-weight:600;letter-spacing:-.01em}
.card .d{font-size:13px;color:var(--ink-2);line-height:1.4}
.card .arrow{color:var(--blue);font-size:13px;font-weight:600;margin-top:auto;padding-top:6px}
.hero .note{margin:26px 0 0;font-size:12px;color:var(--ink-3)}

/* ---------------- 消息 ---------------- */
.msg{max-width:820px;margin:0 auto 18px;display:flex;gap:12px;animation:rise .38s var(--ease) both}
.msg .avatar{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;margin-top:2px;
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;
  background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line-soft);
}
.msg.bot .avatar{background:linear-gradient(160deg,#0a84ff,#0060c0);color:#fff;border-color:transparent}
.bubble{
  flex:1 1 auto;min-width:0;background:var(--surface);border-radius:var(--r-xl);
  padding:16px 20px;box-shadow:var(--shadow-sm);border:1px solid var(--line-soft);
}
.bubble .who{
  font-size:12px;color:var(--ink-3);margin-bottom:8px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.bubble .who .copy{
  margin-left:auto;appearance:none;border:0;background:transparent;color:var(--ink-3);
  font-size:12px;padding:2px 8px;border-radius:var(--r-pill);cursor:pointer;transition:background .2s,color .2s;
}
.bubble .who .copy:hover{background:var(--surface-2);color:var(--ink)}
.msg.user{flex-direction:row-reverse}
.msg.user .bubble{
  background:var(--blue);color:#fff;border-color:transparent;
  box-shadow:0 4px 16px rgba(0,113,227,.22);max-width:min(88%,640px);flex:0 1 auto;
}
.msg.user .bubble .who{display:none}
.msg.user .bubble a{color:#cfe8ff}
.msg .body{min-width:0}
.msg .body > :first-child{margin-top:0}
.msg .body > :last-child{margin-bottom:0}

/* Markdown */
.body p{margin:10px 0}
.body h1,.body h2,.body h3,.body h4{margin:18px 0 8px;font-weight:600;letter-spacing:-.015em;line-height:1.25}
.body h1{font-size:22px}.body h2{font-size:19px}.body h3{font-size:17px}.body h4{font-size:15px}
.body ul,.body ol{margin:10px 0;padding-left:22px}
.body li{margin:4px 0}
.body li::marker{color:var(--ink-3)}
.body strong{font-weight:600}
.body hr{border:0;border-top:1px solid var(--line-soft);margin:16px 0}
.body code{
  font-family:var(--mono);font-size:.875em;background:var(--surface-2);
  padding:2px 6px;border-radius:6px;border:1px solid var(--line-soft);
}
.body pre{
  background:var(--surface-2);border:1px solid var(--line-soft);border-radius:var(--r-md);
  padding:12px 14px;overflow:auto;font-size:13px;line-height:1.5;
}
.body pre code{background:none;border:0;padding:0}
.body blockquote{
  margin:14px 0;padding:10px 16px;border-left:3px solid var(--blue);
  background:var(--blue-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);font-size:14px;
}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0;border-radius:var(--r-md)}
.body table{border-collapse:separate;border-spacing:0;width:100%;font-size:13.5px;min-width:440px;background:var(--surface)}
.body th,.body td{padding:9px 14px;text-align:left;border-bottom:1px solid var(--line-soft);white-space:nowrap}
.body th{
  background:var(--surface-2);font-weight:600;color:var(--ink-2);font-size:12.5px;
  position:sticky;top:0;letter-spacing:.01em;
}
.body tr:last-child td{border-bottom:0}

/* 停机图（时间轴甘特） */
.chart{
  margin:16px 0 4px;padding:14px 16px 10px;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  background:var(--surface);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.chart-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline;margin-bottom:10px}
.chart-head b{font-size:14px;font-weight:600;letter-spacing:-.01em}
.chart-head span{font-size:11.5px;color:var(--ink-3)}
.chart svg.gantt{display:block;width:100%;min-width:640px;height:auto}
.chart-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;font-size:11.5px;color:var(--ink-2)}
.chart-legend .lg{display:inline-flex;align-items:center;gap:5px}
.chart-legend .lg i{width:9px;height:9px;border-radius:3px;display:inline-block}
@media (max-width:720px){
  .chart{padding:12px 12px 8px}
  .chart svg.gantt{min-width:560px}
}

/* 取数过程 */
.trace{margin:12px 0 0;font-size:13px;color:var(--ink-2)}
.trace summary{
  cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:6px;
  background:var(--surface-2);border-radius:var(--r-pill);padding:6px 13px;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);user-select:none;
}
.trace summary::-webkit-details-marker{display:none}
.trace summary:hover{background:var(--blue-soft);color:var(--blue)}
.trace summary::before{content:"›";display:inline-block;transition:transform .25s var(--ease);font-size:15px;line-height:1}
.trace[open] summary::before{transform:rotate(90deg)}
.trace ol{margin:12px 0 0;padding-left:20px}
.trace li{margin:5px 0;font-size:12.5px;color:var(--ink-2)}
.trace li b{color:var(--ink);font-weight:600}
.trace .ok{color:var(--green)}
.trace .bad{color:var(--red)}
.trace pre{
  margin:8px 0 4px;background:var(--surface-2);border:1px solid var(--line-soft);border-radius:var(--r-md);
  padding:10px 12px;max-height:240px;overflow:auto;font-family:var(--mono);
  font-size:11.5px;line-height:1.5;white-space:pre-wrap;word-break:break-all;color:var(--ink-2);
}

/* 运行状态行 */
.status{display:flex;align-items:center;gap:9px;color:var(--ink-2);font-size:13.5px;padding:2px 0}
.dots{display:inline-flex;gap:3px}
.dots span{width:6px;height:6px;border-radius:50%;background:var(--ink-3);animation:blink 1.2s infinite}
.dots span:nth-child(2){animation-delay:.18s}
.dots span:nth-child(3){animation-delay:.36s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
.cursor::after{content:"▍";color:var(--blue);animation:blink 1s infinite;margin-left:1px}

/* ---------------- 底部输入区 ---------------- */
.composer{
  flex:0 0 auto;position:sticky;bottom:0;z-index:15;
  padding:12px 22px calc(14px + env(safe-area-inset-bottom));
  background:var(--composer-bg);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-top:1px solid var(--line-soft);
}
.pre-row{max-width:820px;margin:0 auto 10px;display:flex;align-items:center;gap:10px}
.modes{
  flex:0 0 auto;display:inline-flex;background:var(--surface-2);border:1px solid var(--line-soft);
  border-radius:var(--r-pill);padding:2px;
}
.modes button{
  appearance:none;border:0;background:transparent;color:var(--ink-2);font-size:12.5px;
  padding:5px 13px;border-radius:var(--r-pill);cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.modes button:hover{color:var(--ink)}
.modes button.active{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.1)}
@media (prefers-color-scheme: dark){ .modes button.active{background:#48484a;color:#fff} }
.route-chip{
  font-size:11.5px;padding:2px 9px;border-radius:var(--r-pill);background:var(--surface-2);color:var(--ink-2);
}
.route-chip.direct{background:rgba(52,199,89,.14);color:#1d8a45}
.route-chip.model{background:var(--blue-soft);color:var(--blue)}
@media (prefers-color-scheme: dark){ .route-chip.direct{color:#4cd964} }
.presets{
  flex:1 1 auto;min-width:0;display:flex;gap:8px;overflow-x:auto;padding:2px 0 4px;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.presets::-webkit-scrollbar{display:none}
.presets button{
  flex:0 0 auto;appearance:none;background:var(--surface);border:1px solid var(--line);
  color:var(--ink);border-radius:var(--r-pill);padding:7px 15px;font-size:13px;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);white-space:nowrap;
}
.presets button:hover{border-color:var(--blue);color:var(--blue)}
.presets button:active{transform:scale(.97)}
.input-row{max-width:820px;margin:0 auto;display:flex;gap:10px;align-items:flex-end}
.field{
  flex:1 1 auto;display:flex;align-items:flex-end;gap:8px;min-width:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:7px 8px 7px 18px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px var(--blue-soft)}
textarea#q{
  flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);
  font:16px/1.5 var(--font);resize:none;padding:8px 0;max-height:170px;min-height:28px;
}
textarea#q::placeholder{color:var(--ink-3)}
.send{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;border:0;cursor:pointer;
  background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease),transform .2s var(--ease),opacity .2s var(--ease);
}
.send:hover{background:var(--blue-hover)}
.send:active{transform:scale(.93)}
.send:disabled{opacity:.35;cursor:not-allowed}
.stop{
  flex:0 0 auto;height:34px;padding:0 16px;border-radius:var(--r-pill);cursor:pointer;
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink);font-size:13px;
  transition:background .2s var(--ease);
}
.stop:hover{background:var(--line-soft)}
.hint{
  max-width:820px;margin:9px auto 0;font-size:11.5px;color:var(--ink-3);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}

/* ---------------- 登录 / 弹层 ---------------- */
.overlay{
  position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;padding:22px;
  background:var(--overlay-bg);
  -webkit-backdrop-filter:saturate(180%) blur(24px);backdrop-filter:saturate(180%) blur(24px);
  animation:fade .3s var(--ease) both;
}
.panel{
  background:var(--surface);border-radius:var(--r-xl);padding:36px 32px 30px;width:100%;max-width:400px;
  box-shadow:var(--shadow-lg);text-align:center;animation:pop .45s var(--ease) both;
}
.panel .mark-lg{
  width:52px;height:52px;border-radius:16px;margin:0 auto 18px;
  background:linear-gradient(160deg,#0a84ff,#0060c0);display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;font-weight:600;box-shadow:0 8px 24px rgba(0,90,190,.3);
}
.panel h2{margin:0 0 8px;font-size:22px;font-weight:600;letter-spacing:-.02em}
.panel p{margin:0 0 22px;color:var(--ink-2);font-size:14px;line-height:1.5}
.panel input{
  width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-md);
  font:16px var(--font);background:var(--surface-2);color:var(--ink);outline:0;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);text-align:center;letter-spacing:.08em;
}
.panel input:focus{border-color:var(--blue);box-shadow:0 0 0 4px var(--blue-soft);background:var(--surface)}
.panel button.primary{
  width:100%;margin-top:14px;padding:14px;border:0;border-radius:var(--r-md);cursor:pointer;
  background:var(--blue);color:#fff;font-size:16px;font-weight:500;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.panel button.primary:hover{background:var(--blue-hover)}
.panel button.primary:active{transform:scale(.99)}
.panel button.primary:disabled{opacity:.5;cursor:not-allowed}
.panel .err{color:var(--red);font-size:13px;margin-top:12px;min-height:18px}
.panel .login-hint{margin-top:12px;font-size:11.5px;color:var(--ink-3);line-height:1.5;text-align:center}
.panel .tip{margin-top:22px;font-size:12px;color:var(--ink-3);line-height:1.6}
.panel .tip b{color:var(--ink-2);font-weight:500}
.panel .brandline{
  font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.3em;text-indent:.3em;
  text-transform:uppercase;padding-top:20px;border-top:1px solid var(--line-soft);margin-top:26px;
}
.status-pre{
  text-align:left;font-family:var(--mono);font-size:11.5px;line-height:1.6;color:var(--ink-2);
  background:var(--surface-2);border:1px solid var(--line-soft);border-radius:var(--r-md);
  padding:14px;max-height:56vh;overflow:auto;white-space:pre-wrap;word-break:break-all;
}
.panel.wide{max-width:560px;text-align:left}
.panel.wide h2{text-align:left}
.stat-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0 0 16px;
}
.stat-grid > div{
  background:var(--surface-2);border-radius:var(--r-md);padding:10px 12px;display:flex;flex-direction:column;gap:2px;
}
.stat-grid span{font-size:11.5px;color:var(--ink-3)}
.stat-grid b{font-size:16px;font-weight:600;letter-spacing:-.01em}
.panel .raw{margin-bottom:14px}
.panel .raw summary{
  cursor:pointer;font-size:12.5px;color:var(--ink-3);padding:4px 0;list-style:none;
}
.panel .raw summary::-webkit-details-marker{display:none}
.panel .raw summary::before{content:"›";display:inline-block;margin-right:5px;transition:transform .2s var(--ease)}
.panel .raw[open] summary::before{transform:rotate(90deg)}

@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(8px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){*{animation-duration:.001s !important;transition-duration:.001s !important}}

/* ---------------- 手机适配 ---------------- */
@media (max-width:720px){
  :root{--nav-h:48px}
  .nav{padding:0 14px;gap:8px}
  .nav .brand .name{font-size:14px}
  .nav-badge{max-width:none;padding:4px 9px}
  .nav-actions{gap:0}
  .nav-btn{padding:7px 9px;font-size:12.5px}
  .chat{padding:18px 14px 4px}
  .hero{margin-top:3vh}
  .hero h1{font-size:32px}
  .hero .sub{font-size:15px;margin-bottom:24px}
  .hero .cards{grid-template-columns:1fr;gap:10px}
  .card{min-height:0;padding:14px 16px}
  .composer{padding:10px 12px calc(12px + env(safe-area-inset-bottom))}
  .msg{gap:9px;margin-bottom:14px}
  .msg .avatar{flex:0 0 26px;width:26px;height:26px;font-size:10px}
  .bubble{padding:13px 15px;border-radius:20px}
  .msg.user .bubble{border-radius:20px}
  .body h1{font-size:19px}.body h2{font-size:17px}.body h3{font-size:16px}
  .field{padding:6px 6px 6px 15px}
  .presets button{font-size:12.5px;padding:6px 13px}
}
@media (max-width:430px){
  .brand .name{max-width:78px}
  .nav-badge .txt{display:none}
  .nav-badge{padding:5px 7px}
  .hero h1{font-size:28px}
  .msg.user .bubble{max-width:100%}
}