/* Каркас и палитра — из swiftvpn-flow-site, тёмная тема. Шрифты системные. */
:root{
  --bg:#080b12; --bg2:#0b1020; --surface:#111827cc; --surface-solid:#0f1626;
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.06);
  --tx:#e7edf5; --tx2:#9fb0c3; --tx3:#6c7d92;
  --acc:#22d3ee; --acc2:#2dd4bf; --warn:#f59e0b; --bad:#ef4444; --good:#10b981;
  --grad:linear-gradient(120deg,#22d3ee,#2dd4bf);
  --r:16px; --r2:12px;
  --shadow:0 10px 40px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--tx);
  line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100vh}
body::before{content:"";position:fixed;inset:0;z-index:-2;
  background:radial-gradient(900px 500px at 12% -5%,rgba(34,211,238,.10),transparent 60%),
    radial-gradient(1000px 600px at 100% 0%,rgba(45,212,191,.08),transparent 55%),
    radial-gradient(800px 500px at 50% 110%,rgba(59,130,246,.07),transparent 60%),var(--bg)}
body::after{content:"";position:fixed;inset:0;z-index:-1;opacity:.5;pointer-events:none;
  background-image:linear-gradient(var(--line2) 1px,transparent 1px),linear-gradient(90deg,var(--line2) 1px,transparent 1px);
  background-size:52px 52px;mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%)}
a{color:inherit;text-decoration:none}
code{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;color:var(--acc2)}
.wrap{max-width:1380px;margin:0 auto;padding:0 20px}
.muted{color:var(--tx3)} .small{font-size:12.5px}

/* nav */
nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(8,11,18,.78);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:16px;letter-spacing:-.02em}
.logo{width:30px;height:30px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#04121a;font-weight:800;
  box-shadow:0 4px 16px -4px rgba(34,211,238,.6);flex:none}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--tx3)}
.instsel{display:flex;align-items:center;gap:12px}
.instsel label{display:flex;flex-direction:column;font-size:11px;color:var(--tx3);gap:2px}
.status{font-size:12px;color:var(--tx3)} .status.bad{color:var(--bad)}
.tabs{margin-left:auto;display:flex;gap:6px}
.tabs a{padding:8px 13px;border-radius:9px;font-size:13.5px;color:var(--tx2);font-weight:500;transition:.18s}
.tabs a:hover{color:var(--tx);background:rgba(255,255,255,.05)}
.tabs a.active{color:var(--tx);background:rgba(34,211,238,.12)}
.logout{margin:0}
.demo-banner{background:rgba(245,158,11,.14);border-bottom:1px solid rgba(245,158,11,.4);color:#ffedd0;text-align:center;font-size:13px;padding:6px}

/* controls */
select,input[type=date],input[type=text],input[type=password],input:not([type]){
  background:var(--surface-solid);border:1px solid var(--line);color:var(--tx);border-radius:9px;padding:8px 10px;font:inherit;font-size:13.5px;outline:0}
select:focus,input:focus{border-color:rgba(34,211,238,.55)}
select{max-width:320px}
.btn{padding:9px 15px;border-radius:11px;border:1px solid var(--line);background:var(--surface);color:var(--tx2);font-size:13px;font-weight:600;cursor:pointer;
  transition:.16s;display:inline-flex;align-items:center;gap:7px;font-family:inherit}
.btn:hover{color:var(--tx);border-color:rgba(34,211,238,.4)}
.btn.primary{background:rgba(34,211,238,.16);border-color:rgba(34,211,238,.45);color:var(--tx)}
.btn.ghost{background:transparent}
.btn[disabled]{opacity:.45;cursor:default}
.filt{padding:6px 11px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--tx2);font-size:12.5px;font-weight:600;cursor:pointer;font-family:inherit}
.filt.on{color:var(--tx);background:rgba(34,211,238,.15);border-color:rgba(34,211,238,.4)}
.presets{display:inline-flex;gap:6px}
.tools{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:end;margin:14px 0}
.tools label{display:flex;flex-direction:column;gap:4px;font-size:11.5px;color:var(--tx3)}
.tools label.chk{flex-direction:row;align-items:center;gap:7px;font-size:13px;color:var(--tx2);padding-bottom:9px}
.search{flex:1;min-width:220px;display:flex;align-items:center;border:1px solid var(--line);border-radius:11px;background:var(--surface);padding:0 4px}
.search input{border:0;background:0;outline:0;color:var(--tx);font-size:14px;width:100%;padding:10px}

/* sections */
main{padding:18px 20px 40px}
.card{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);backdrop-filter:blur(8px);padding:4px 20px}
.panel{margin-top:16px}
.stats{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 14px}
.stat{padding:10px 14px;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);min-width:120px}
.stat b{display:block;font-size:22px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.03em;line-height:1.1}
.stat span{font-size:11.5px;color:var(--tx2)}
.stat.warn b{background:none;color:var(--warn)}

/* diagram frame */
.frame{border:1px solid var(--line);border-radius:var(--r);background:var(--surface-solid);box-shadow:var(--shadow);overflow:hidden}
.frame .bar{display:flex;align-items:center;gap:8px;padding:11px 16px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.frame .bar .d{width:11px;height:11px;border-radius:50%}
.frame .bar .t{margin-left:10px;font-size:13px;color:var(--tx2);font-weight:500}
.frame .bar .hint{margin-left:auto;font-size:12px;color:var(--tx3)}
.diagram-viewport{position:relative;height:min(72vh,760px);overflow:hidden;cursor:grab;touch-action:none;
  background:radial-gradient(circle at 50% 42%,rgba(255,255,255,.025),transparent 72%)}
.diagram-viewport.grabbing{cursor:grabbing}
.mermaid-host{width:100%;height:100%;text-align:center}
.mermaid-host svg{max-width:none!important;display:block;margin:0 auto}
.sankey-host{width:100%;height:100%;overflow:auto;cursor:default}
.overlay{position:absolute;inset:0;display:grid;place-items:center;background:rgba(8,11,18,.6);color:var(--tx2);font-size:15px;z-index:5;padding:20px;text-align:center}
.overlay[hidden]{display:none}
.overlay.err{color:#fecaca}
.zoomctl{position:absolute;right:16px;bottom:16px;z-index:6;display:flex;flex-direction:column;gap:8px}
.zoomctl button{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(15,22,38,.92);color:var(--tx);font-size:22px;font-weight:600;
  cursor:pointer;display:grid;place-items:center;line-height:1;box-shadow:var(--shadow);font-family:inherit}
.zoomctl button:hover{border-color:rgba(34,211,238,.55);color:var(--acc)}
.zoomctl .rst{font-size:17px}
.legend{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:14px;font-size:12.5px;color:var(--tx2)}
.legend span{display:inline-flex;align-items:center;gap:7px}
.legend i{width:22px;height:11px;border-radius:4px;display:inline-block;opacity:.85}
.node-clickable{cursor:pointer}
.sankey-host text{font-size:12px;fill:var(--tx)}
.sankey-host .lnk{fill:none;stroke-opacity:.35}
.sankey-host .lnk:hover{stroke-opacity:.7}
.sankey-host rect{cursor:pointer}

/* tables */
.tablewrap{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:auto}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th,.tbl td{padding:9px 12px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:top}
.tbl th{font-size:11.5px;color:var(--tx3);text-transform:uppercase;letter-spacing:.05em;font-weight:700;position:sticky;top:0;background:var(--surface-solid)}
.tbl th small{text-transform:none;letter-spacing:0;font-weight:500}
.tbl td.num,.tbl th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl tbody tr{cursor:pointer;transition:.12s}
.tbl tbody tr:hover{background:rgba(34,211,238,.06)}
.tbl .code{font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--tx3)}
.tbl .pill{display:inline-block;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:2px 8px;border-radius:999px;color:#04121a;opacity:.9}
.tbl .txt{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--tx2)}
.bar-pct{display:inline-block;height:6px;border-radius:3px;background:var(--bad);vertical-align:middle;margin-left:6px;opacity:.7}
.empty{padding:34px;text-align:center;color:var(--tx3)}

/* login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.login-card{width:min(420px,100%);border:1px solid var(--line);border-radius:var(--r);background:var(--surface);backdrop-filter:blur(8px);padding:28px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow)}
.login-card label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;color:var(--tx2)}
.login-card input{font-size:15px}
.login-card .btn{justify-content:center;font-size:14px;padding:11px}
.alert{background:rgba(239,68,68,.14);border:1px solid rgba(239,68,68,.4);color:#fecaca;border-radius:10px;padding:10px 12px;font-size:13.5px}
.note{background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.35);color:#ffedd0;border-radius:10px;padding:10px 12px;font-size:13px}
.hint{font-size:12.5px;color:var(--tx3);margin:0}

footer{border-top:1px solid var(--line);padding:22px 0;color:var(--tx3);font-size:12.5px}
@media(max-width:900px){.tabs{margin-left:0} .diagram-viewport{height:60vh}}