:root{
  --bg:#f0f9ff;--card:#fff;--ink:#0c2d48;--muted:#5b7389;--line:#d6e8f5;--soft:#f3f9fe;
  --side:#fff;--side-ink:#3d5a73;--side-hi:#e0f2fe;--amber:#0ea5e9;
  --brand:#0284c7;--brand-d:#0369a1;--brand-t:#e0f2fe;
  --ok:#0f7a43;--err:#b42318;--warn:#8a5a00;
  --r-card:16px;--r-ctl:10px;
  --shadow:0 1px 2px rgba(3,105,161,.06),0 8px 24px -14px rgba(3,105,161,.28)
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
h1{font-size:26px;line-height:1.2;letter-spacing:-.015em;margin:0 0 20px;font-weight:700}
h3{margin:0 0 14px;font-size:16px;font-weight:650;letter-spacing:-.005em}
h4{margin:16px 0 8px;font-size:14px;font-weight:650}

/* ---------- shell: sidebar + page ---------- */
.shell{display:flex;min-height:100vh}
.side{width:256px;flex:none;background:var(--side);border-right:1px solid var(--line);color:var(--side-ink);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;padding:20px 14px}
.brand{display:flex;align-items:center;gap:12px;line-height:1.15;color:var(--brand-d);padding:4px 8px 20px;margin-bottom:10px;border-bottom:1px solid var(--line)}
.brand span{display:flex;flex-direction:column}.brand b{font-size:21px;letter-spacing:.04em;font-weight:800;color:var(--brand)}.brand em{font-style:normal;font-size:13px;font-weight:700;color:var(--ink)}.brand i{font-style:normal;font-size:11px;font-weight:600;color:var(--muted);margin-top:2px}
.brand:hover{text-decoration:none}
.brand .mark{width:48px;height:48px;flex:none;filter:drop-shadow(0 4px 8px rgba(14,165,233,.35))}
.side nav{display:flex;flex-direction:column;gap:2px;flex:1}
.side nav a{display:flex;align-items:center;gap:11px;color:var(--side-ink);padding:10px 12px;border-radius:var(--r-ctl);font-weight:550;position:relative}
.side nav a svg{width:19px;height:19px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side nav a:hover{background:var(--side-hi);color:var(--brand-d);text-decoration:none}
.side nav a.on{background:var(--brand);color:#fff;box-shadow:0 6px 14px -8px rgba(2,132,199,.8)}
.side nav a.on::before{display:none}
.side nav .gap{flex:1}
.side nav a.out{color:#7890a5}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
body{background:linear-gradient(180deg,#e0f2fe 0,#f0f9ff 260px,#f0f9ff 100%) no-repeat,#f0f9ff}
h1{color:var(--brand-d)}
.page{max-width:1240px;width:100%;margin:0 auto;padding:30px 36px 28px;flex:1;display:flex;flex-direction:column}
.page>*{flex:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}.narrow{max-width:760px}

@media(max-width:900px){
  .shell{display:block}
  .side{position:static;width:auto;height:auto;flex-direction:row;align-items:center;gap:10px;padding:10px 12px;overflow-x:auto}
  .brand{padding:0 8px 0 4px}.brand span{display:none}
  .side nav{flex-direction:row;gap:2px;flex:none}
  .side nav a{padding:8px 11px;white-space:nowrap}.side nav a span{display:none}
  .side nav a.on::before{left:10px;right:10px;top:auto;bottom:-3px;width:auto;height:3px;border-radius:3px 3px 0 0}
  .side nav .gap{display:none}
  .page{padding:20px 16px 24px}
  h1{font-size:22px}
}

/* ---------- cards & layout ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;margin-bottom:18px;box-shadow:var(--shadow)}
.center{text-align:center}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:0 18px;align-items:end}
.split{display:grid;grid-template-columns:390px 1fr;gap:18px;align-items:start}
@media(max-width:900px){.grid2,.grid4,.split{grid-template-columns:1fr}}
.actions{margin:0 0 18px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.muted{color:var(--muted)}.smalltxt{font-size:13px}.warn{color:var(--warn)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;word-break:break-all}
code{background:var(--soft);border:1px solid var(--line);padding:1px 6px;border-radius:5px;font-size:13px}
[hidden]{display:none!important}

/* ---------- forms ---------- */
label{display:block;font-weight:600;font-size:13px;margin-bottom:14px;color:#18425f}
label small{font-weight:400;color:var(--muted)}
input[type=text],input[type=url],input[type=number],input[type=password],input:not([type]),select,textarea{display:block;width:100%;margin-top:5px;padding:10px 12px;border:1px solid #bcd3e6;border-radius:var(--r-ctl);font:inherit;color:var(--ink);background:#fff;transition:border-color .15s,box-shadow .15s}
input[type=color]{display:block;margin-top:5px;width:100%;height:42px;border:1px solid #bcd3e6;border-radius:var(--r-ctl);padding:3px;background:#fff}
input[type=file]{display:block;margin-top:6px;font:inherit}
input[type=checkbox],input[type=radio]{width:auto;margin:0 7px 0 0;accent-color:var(--brand)}
textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(2,132,199,.22)}
.tabs{display:inline-flex;gap:4px;padding:4px;background:var(--soft);border:1px solid var(--line);border-radius:10px;margin-bottom:16px}
.tabs label{margin:0;font-size:14px;cursor:pointer;padding:7px 14px;border-radius:7px}
.tabs label:has(input:checked){background:#fff;box-shadow:0 1px 3px rgba(16,24,40,.12);color:var(--brand)}
.chk{display:inline-flex;align-items:center;margin:0;font-weight:500;font-size:13px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff;border:0;border-radius:var(--r-ctl);padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;transition:background .15s,transform .05s}
.btn:hover{background:var(--brand-d);text-decoration:none}.btn:active{transform:translateY(1px)}
.btn.sm{padding:5px 11px;font-size:13px;border-radius:7px}
.btn.ghost{background:#fff;color:#0c4a6e;border:1px solid #bcd3e6}.btn.ghost:hover{background:var(--soft);border-color:#8fb4d0}
.btn.danger{background:#fff;color:var(--err);border:1px solid #f0c4bf}.btn.danger:hover{background:#fdecea}

/* ---------- messages ---------- */
.flash{padding:12px 16px;border-radius:10px;margin-bottom:16px;border:1px solid;border-left-width:4px}
.flash.ok{background:#eaf7f0;border-color:#b9e2cb;color:var(--ok)}.flash.err{background:#fdeeec;border-color:#f3c5bf;color:var(--err)}
.flash.info{background:#e0f2fe;border-color:#bae6fd;color:#075985}

/* ---------- tables ---------- */
.tbl{width:100%;border-collapse:collapse}
.tbl th,.tbl td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.tbl th{font-size:12.5px;font-weight:650;color:var(--muted);background:var(--soft);white-space:nowrap}
.tbl th:first-child{border-radius:8px 0 0 8px}.tbl th:last-child{border-radius:0 8px 8px 0}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:not(.group):hover td{background:#f5fbff}
.num{text-align:right!important;font-weight:600}
.tbl tr.top td{background:#f8fcff}.tbl tr.sub td:first-child{padding-left:32px}
.tbl tr.group td{background:var(--brand-t);font-weight:650;color:#075985;padding:8px 12px;border-bottom:1px solid #bfe0f5}
.tbl.list{border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;margin-bottom:18px}
.tbl.list th{border-radius:0}
.list td.url{max-width:280px;word-break:break-all;font-size:13px}
.thumb{display:block;border:1px solid var(--line);border-radius:6px;background:#fff;padding:2px}
.acts{white-space:nowrap}.acts>*{display:inline-block;vertical-align:middle;margin-right:4px}
form.inline,details.inline{display:inline-block;margin:0;vertical-align:middle}
details.inline summary{display:inline-block;cursor:pointer;background:#fff;color:#0c4a6e;border:1px solid #bcd3e6;border-radius:7px;padding:5px 11px;font-size:13px;font-weight:600;list-style:none}
details.inline[open]{display:block;margin-top:8px}.editbox{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.editbox input,.editbox select{width:auto;margin:0;min-width:150px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:650}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.active{background:#e6f5ec;color:var(--ok)}.pill.paused{background:#fff2d9;color:var(--warn)}
@media(max-width:900px){.card{overflow-x:auto}.tbl{min-width:620px}}

/* ---------- dashboard ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);margin-bottom:20px;overflow:hidden}
.stat{padding:18px 20px;border-right:1px solid var(--line)}.stat:last-child{border-right:0}
.stat b{display:block;font-size:30px;line-height:1.1;font-weight:700;letter-spacing:-.02em}
.stat span{color:var(--muted);font-size:13px}
.stat.hero{background:linear-gradient(135deg,#0ea5e9,#0284c7);color:#fff}.stat.hero span{color:#e0f2fe}.stat.hero b{color:#fff}
@media(max-width:900px){.stats{grid-template-columns:repeat(2,1fr)}.stat{border-bottom:1px solid var(--line)}.stat.hero{grid-column:1/-1;order:-1}}

/* ---------- filters, bulk bar, pager ---------- */
.filters{display:grid;grid-template-columns:1.5fr 1.2fr .8fr 1.4fr auto;gap:0 14px;align-items:end;padding:16px 20px}.filters label{margin-bottom:0}
@media(max-width:900px){.filters{grid-template-columns:1fr 1fr;gap:10px 12px}}
.bulkbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 16px}.bulkbar select{width:auto;margin:0}.sep{color:#b7c0cc}
.movepanel{flex-basis:100%;margin-top:6px}.movepanel .picker{margin:0}
.pager{display:flex;gap:6px;flex-wrap:wrap}.pager a{padding:6px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;font-weight:600}.pager a.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.preview{width:100%;max-width:330px;height:auto;border:1px solid var(--line);border-radius:10px;image-rendering:pixelated;padding:8px;background:#fff}
.bars{display:flex;align-items:flex-end;gap:4px;height:100px;margin-bottom:12px}
.bar{flex:1;height:100%;display:flex;align-items:flex-end;background:var(--soft);border-radius:4px}.bar i{display:block;width:100%;background:linear-gradient(180deg,#38bdf8,#0284c7);border-radius:4px;min-height:2px}
.bar:hover i{background:var(--brand-d)}

/* ---------- login ---------- */
.loginbody{background:#fff}
.loginwrap{display:grid;grid-template-columns:1.05fr 1fr;min-height:100vh}
.loginart{background:linear-gradient(160deg,#e0f2fe 0%,#bae6fd 55%,#7dd3fc 100%);color:var(--ink);display:flex;flex-direction:column;justify-content:space-between;padding:48px;position:relative;overflow:hidden}
.loginart .qrart{width:min(440px,82%);height:auto;align-self:center;margin:auto 0}
.loginart h2{margin:0 0 8px;font-size:28px;line-height:1.2;letter-spacing:-.02em;max-width:18ch}
.loginart p{margin:0;color:#24506f;max-width:38ch}
.loginform{display:flex;align-items:center;justify-content:center;padding:32px}
.login{width:100%;max-width:360px}
.login h1{font-size:26px;margin:0 0 6px}.login .sub{margin:0 0 24px;color:var(--muted)}
.login .btn{width:100%;padding:12px}
@media(max-width:900px){.loginwrap{grid-template-columns:1fr}.loginart{display:none}}
.foot{margin-top:auto;padding-top:36px;color:var(--muted);font-size:12.5px;text-align:center}
.login .foot{margin-top:28px;padding-top:0}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
input[type=file]::file-selector-button{font:inherit;font-weight:600;font-size:13px;padding:7px 12px;margin-right:10px;border:1px solid #bcd3e6;border-radius:7px;background:#fff;color:#0c4a6e;cursor:pointer}
input[type=file]::file-selector-button:hover{background:var(--soft)}
form.inline{margin-left:8px}

.brand .mark{display:block}
.loginform .brand{display:none}
.loginart .brand{padding:0;border:0;margin:0}
.loginart .brand b{color:var(--brand-d)}
.btn{box-shadow:0 6px 14px -8px rgba(2,132,199,.9)}.btn.ghost,.btn.danger{box-shadow:none}
.foot{color:#5b7389}
@media(max-width:900px){.brand{border:0;margin:0}.brand span{display:none}.brand .mark{width:38px;height:38px}.side{border-right:0;border-bottom:1px solid var(--line)}.side nav a.on{box-shadow:none}}