/* UPI Platform — Chinese operations dashboard.
   Admin + public layouts. No images, no CDNs, no external fonts. */

:root{
  --ivory:#f5f3ed; --charcoal:#242924; --orange:#c74b30; --orange-ink:#a8351c;
  --orange-wash:rgba(199,75,48,.10); --green:#1f7a4d; --red:#b3271e; --warn:#8a5a00;
  --surface:#fffefb; --ink:#242924; --ink-soft:#5b625b;
  --line:rgba(36,41,36,.14); --line-strong:rgba(36,41,36,.30);
  --sidebar-w:220px; --radius:10px; --gap:16px;
  --chs:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Sarasa Mono SC",Consolas,monospace;
  --shadow:0 1px 2px rgba(36,41,36,.06),0 10px 26px rgba(36,41,36,.07);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ivory);color:var(--ink);font:15px/1.55 var(--chs);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure{margin:0}
h2{font-size:17px} h3{font-size:15px}
a{color:var(--orange-ink);text-decoration:none} a:hover{text-decoration:underline}
hr{border:0;border-top:1px solid var(--line);margin:var(--gap) 0}
:focus-visible{outline:2px solid var(--orange-ink);outline-offset:2px;border-radius:4px}
.sidebar :focus-visible,.public-nav :focus-visible{outline-color:#f0b9a8}
::selection{background:var(--orange-wash)}

/* ---------- app shell ---------- */
.app{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);grid-template-rows:auto 1fr;min-height:100vh}
.sidebar{grid-column:1;grid-row:1/3;position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--charcoal);
  color:var(--ivory);padding:16px 0 24px;display:flex;flex-direction:column;gap:6px}
.sidebar .brand{display:flex;align-items:center;gap:10px;padding:0 16px 14px;margin-bottom:8px;border-bottom:1px solid rgba(245,243,237,.14)}
.sidebar .brand strong{color:var(--ivory);font-size:16px;font-weight:700;line-height:1.3}
.sidebar .nav{display:flex;flex-direction:column;gap:2px}
.sidebar .nav a{display:block;padding:9px 16px;color:rgba(245,243,237,.82);font-size:14px;border-left:3px solid transparent}
.sidebar .nav a:hover{background:rgba(245,243,237,.07);text-decoration:none;color:var(--ivory)}
.sidebar .nav a[aria-current="page"],.sidebar .nav a.active{background:var(--orange-wash);border-left-color:var(--orange);color:var(--ivory);font-weight:600}
.sidebar .eyebrow,.public-nav .eyebrow{color:rgba(245,243,237,.70)}
.sidebar footer{margin-top:auto;padding:14px 16px 0;font-size:12px;color:rgba(245,243,237,.60);border-top:1px solid rgba(245,243,237,.14)}
.topbar{grid-column:2;grid-row:1;position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--line)}
.workspace{grid-column:2;grid-row:2;padding:22px 20px 40px;display:grid;gap:var(--gap);align-content:start;min-width:0}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.metric{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.metric-value{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:27px;line-height:1.2;letter-spacing:-.02em}
.metric-label{display:block;margin-top:4px;font-size:13px;color:var(--ink-soft)}
.metric-note{display:block;margin-top:6px;font-size:12px;color:var(--ink-soft)}
.metric-note.success,.success{color:var(--green)}
.metric-note.failed,.error{color:var(--red)}
.metric-note.warning{color:var(--warn)}

/* ---------- panels (never nested) ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line)}
.panel-head h2,.panel-head h3{font-weight:700}
.panel-body{padding:16px}
.panel-body.flush{padding:0}
.panel .table-wrap{border:0;border-radius:0;background:transparent}
.panel .panel-body .panel,.panel .panel-body .panel-body{box-shadow:none;border:0;border-radius:0;background:transparent;padding:0}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.table{width:100%;min-width:540px;border-collapse:collapse}
.table caption{text-align:left;padding:10px 16px;font-size:13px;color:var(--ink-soft)}
.table th,.table td{padding:9px 14px;text-align:left;vertical-align:middle;border-bottom:1px solid var(--line)}
.table th{font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--ink-soft);background:rgba(36,41,36,.03);white-space:nowrap}
.table tbody tr:hover{background:var(--orange-wash)}
.table td.num,.table th.num,.mono,.metric-value,.result-value,time,.field input[type=number],.field input[type=date],.field input[type=datetime-local],.field input[type=time]{font-family:var(--mono);font-variant-numeric:tabular-nums}
.table td.num,.table th.num{text-align:right}

/* ---------- badges / status ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;border:1px solid transparent}
.badge.success{color:var(--green);background:rgba(31,122,77,.10);border-color:rgba(31,122,77,.32)}
.badge.failed{color:var(--red);background:rgba(179,39,30,.10);border-color:rgba(179,39,30,.32)}
.badge.warning{color:var(--warn);background:rgba(138,90,0,.10);border-color:rgba(138,90,0,.32)}
.badge.muted,.muted{color:var(--ink-soft)}
.badge.muted{background:rgba(36,41,36,.06);border-color:var(--line-strong)}
.status-dot{display:inline-block;flex:none;width:8px;height:8px;border-radius:50%;background:var(--ink-soft)}
.status-dot.success{background:var(--green)} .status-dot.failed{background:var(--red)} .status-dot.warning{background:var(--warn)}

/* ---------- buttons ---------- */
.btn,.primary,.secondary,.danger{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:8px;
  border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.primary{background:var(--orange);border-color:var(--orange);color:#fff}
.secondary{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}
.danger{background:var(--red);border-color:var(--red);color:#fff}
.small{padding:4px 10px;font-size:12.5px;border-radius:7px}
.btn:hover,.primary:hover,.secondary:hover,.danger:hover{filter:brightness(.96);text-decoration:none}
.btn:disabled,.primary:disabled,.secondary:disabled,.danger:disabled,[disabled]{opacity:.55;cursor:not-allowed;filter:none}

/* ---------- forms ---------- */
.field{display:grid;gap:5px}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft)}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:14px;padding:8px 10px;color:var(--ink);background:#fff;
  border:1px solid var(--line-strong);border-radius:8px}
.field textarea{min-height:88px;resize:vertical}
.field input:user-invalid,.field textarea:user-invalid{border-color:var(--red)}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px 16px;align-items:start}
.form-grid .span-2{grid-column:1/-1}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tabs{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--line)}
.tabs>*{padding:8px 12px;font:inherit;font-size:14px;font-weight:600;color:var(--ink-soft);background:none;border:0;
  border-bottom:3px solid transparent;cursor:pointer}
.tabs>[aria-current="page"],.tabs>.active{color:var(--orange-ink);border-bottom-color:var(--orange)}

/* ---------- feedback ---------- */
.empty{padding:30px 18px;text-align:center;color:var(--ink-soft);border:1px dashed var(--line-strong);border-radius:var(--radius)}
.toast{position:fixed;right:16px;bottom:16px;z-index:40;max-width:min(360px,90vw);padding:11px 14px;background:var(--surface);
  border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:var(--radius);box-shadow:var(--shadow);animation:toast-in .18s ease-out}
.toast.success{border-left-color:var(--green)} .toast.error{border-left-color:var(--red)}
@keyframes toast-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
dialog{border:1px solid var(--line);border-radius:12px;padding:0;width:min(560px,92vw);background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(36,41,36,.45)}
dialog form{padding:18px}

/* ---------- login ---------- */
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--ivory)}
.login-panel{width:min(400px,100%);display:grid;gap:14px;padding:26px;background:var(--surface);
  border:1px solid var(--line);border-top:3px solid var(--orange);border-radius:14px;box-shadow:var(--shadow)}

/* ---------- public ---------- */
.public-nav{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:12px 20px;background:var(--charcoal);color:var(--ivory)}
.public-nav a{color:rgba(245,243,237,.84)} .public-nav a:hover,.public-nav a[aria-current="page"]{color:#fff}
.public-nav .grow{gap:14px}
.public-main{max-width:920px;margin:0 auto;padding:28px 20px 48px;display:grid;gap:20px}
.redeem-panel{display:grid;gap:14px;padding:20px;background:var(--surface);border:1px solid var(--line);
  border-left:4px solid var(--orange);border-radius:var(--radius);box-shadow:var(--shadow)}
.public-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.public-stats .metric{border-left-width:1px;box-shadow:none}
.result{display:grid;gap:6px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);
  border-left:4px solid var(--orange);border-radius:var(--radius)}
.result.success{border-left-color:var(--green)} .result.failed{border-left-color:var(--red)}
.result-value{font-size:23px;line-height:1.25}

/* ---------- utilities ---------- */
.hidden{display:none!important}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.grow{flex:1 1 auto;min-width:0}
.stack{display:grid;gap:10px}
.subtle{color:var(--ink-soft);font-size:13px}
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.page-title{font-size:21px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}

/* ---------- responsive ---------- */
@media (max-width:1000px){.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){
  .app{grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto 1fr}
  .topbar{grid-column:1;grid-row:1;padding:10px 14px}
  .sidebar{grid-column:1;grid-row:2;position:static;height:auto;width:100%;flex-direction:row;align-items:center;gap:10px;
    padding:8px 12px;overflow:visible}
  .sidebar .brand{padding:0;margin:0;border:0;flex:none}
  .sidebar .nav{flex-direction:row;gap:2px;overflow-x:auto;min-width:0}
  .sidebar .nav a{border-left:0;border-bottom:3px solid transparent;white-space:nowrap;padding:8px 12px}
  .sidebar .nav a[aria-current="page"],.sidebar .nav a.active{border-left-color:transparent;border-bottom-color:var(--orange)}
  .sidebar footer{margin:0;padding:0;border:0;flex:none;white-space:nowrap}
  .workspace{grid-column:1;grid-row:3;padding:16px 14px 40px}
}
@media (max-width:420px){
  .metrics{grid-template-columns:minmax(0,1fr)}
  .sidebar{flex-wrap:wrap} .sidebar .nav{flex-wrap:wrap;overflow-x:visible}
  .public-main{padding:18px 14px 40px}
  .actions>*{flex:1 1 140px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

.public-main h1{font-size:clamp(28px,4vw,40px);letter-spacing:-.04em;line-height:1.25;margin:10px 0 16px}.public-main>footer{border-top:1px solid var(--line);padding-top:20px}.public-main{max-width:1080px;padding-top:52px}.public-nav{padding:18px max(24px,calc((100vw - 1040px)/2))}.redeem-panel{padding:30px}.sidebar .brand strong{font-size:25px;letter-spacing:-.04em}.workspace{max-width:1600px}.page-title{font-size:29px}#result-link{overflow-wrap:anywhere}.metric{box-shadow:none}.panel{box-shadow:none}