/* ===== KR Link admin — design system (infra style), dark + light ===== */
:root{
  --bg:#0b1020; --panel:#121936; --panel2:#172044; --panel3:#1c2650;
  --text:#eef2ff; --muted:#9aa7c7; --faint:#6b78a0;
  --line:#28335f; --line2:#38477f;
  --accent:#4ea1ff; --accent2:#55d6a7; --indigo:#9b7cff;
  --good:#55d6a7; --warn:#f3c969; --danger:#ff6b6b;
  --shadow:0 14px 40px rgba(0,0,0,.35);
  --radius:16px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Inter",system-ui,"Segoe UI",Roboto,sans-serif;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#eef1f8; --panel:#ffffff; --panel2:#f5f7fc; --panel3:#eef1fa;
  --text:#131a2e; --muted:#5b688a; --faint:#8b97b5;
  --line:#e2e7f2; --line2:#cfd6e8;
  --accent:#2a6fd6; --accent2:#1c9c6b; --indigo:#6d5bd0;
  --good:#1c9c6b; --warn:#b5811a; --danger:#d6455a;
  --shadow:0 12px 30px rgba(40,60,120,.12);
  color-scheme:light;
}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --bg:#eef1f8; --panel:#ffffff; --panel2:#f5f7fc; --panel3:#eef1fa;
    --text:#131a2e; --muted:#5b688a; --faint:#8b97b5;
    --line:#e2e7f2; --line2:#cfd6e8;
    --accent:#2a6fd6; --accent2:#1c9c6b; --indigo:#6d5bd0;
    --good:#1c9c6b; --warn:#b5811a; --danger:#d6455a;
    --shadow:0 12px 30px rgba(40,60,120,.12);
    color-scheme:light;
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;font-family:var(--font);color:var(--text);line-height:1.5;
  background:
    radial-gradient(1100px 600px at 90% -10%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 60%),
    radial-gradient(900px 600px at -10% 110%,color-mix(in srgb,var(--indigo) 12%,transparent),transparent 55%),
    var(--bg);
  min-height:100vh}
.muted{color:var(--muted)}
.small{font-size:12px}
h1{font-size:22px;margin:0;letter-spacing:-.01em}
h2{font-size:15px;margin:0 0 14px}
code{background:var(--panel2);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:12px}

/* buttons */
.btn{background:var(--panel2);border:1px solid var(--line2);color:var(--text);font:inherit;
  font-weight:600;padding:9px 15px;border-radius:11px;cursor:pointer;transition:.15s}
.btn:hover{border-color:var(--accent)}
.btn.ghost{background:transparent}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--indigo));border-color:transparent;color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.wide{display:block;width:100%;margin-top:10px}
.icon-btn{width:38px;height:38px;border-radius:11px;background:var(--panel2);border:1px solid var(--line2);
  color:var(--text);cursor:pointer;font-size:16px;line-height:1}
.icon-btn:hover{border-color:var(--accent)}

/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;
  padding:34px 38px;text-align:center;max-width:360px;width:100%;box-shadow:var(--shadow)}
.brand-mark{width:56px;height:56px;border-radius:16px;margin:0 auto 14px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--accent),var(--indigo));font-weight:800;font-size:28px;color:#fff}
.brand-mark.small{width:36px;height:36px;border-radius:11px;font-size:19px;margin:0}
.login h1{font-size:24px}
.login .hint{color:var(--faint);font-size:12.5px;margin-top:18px}
#tg-login{margin-top:22px;min-height:48px;display:flex;justify-content:center}
.or{margin:18px 0 12px;color:var(--faint);font-size:11px;text-transform:uppercase;letter-spacing:.1em;display:flex;align-items:center;gap:10px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.code-input{width:100%;background:var(--panel2);border:1px solid var(--line2);color:var(--text);
  font:inherit;padding:11px 13px;border-radius:11px;text-align:center}
.code-input:focus{outline:2px solid var(--accent);outline-offset:1px}
.form-error{color:var(--danger);font-size:13px;margin-top:12px}

/* shell */
.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:12px 20px;background:color-mix(in srgb,var(--panel) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand-row{display:flex;align-items:center;gap:10px;font-size:15px}
.nav{display:flex;gap:4px;overflow-x:auto;flex:1;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav-btn{white-space:nowrap;background:transparent;border:none;color:var(--muted);font:inherit;
  font-weight:600;font-size:14px;padding:9px 14px;border-radius:10px;cursor:pointer;transition:.15s}
.nav-btn:hover{color:var(--text)}
.nav-btn.active{background:var(--panel2);color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.topbar-right{display:flex;gap:8px;align-items:center;margin-left:auto}
.wrap{max-width:1320px;margin:0 auto;padding:22px 24px 60px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}

/* subtabs */
.subtabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:18px;scrollbar-width:none}
.subtabs::-webkit-scrollbar{display:none}
.subtab{white-space:nowrap;background:var(--panel);border:1px solid var(--line);color:var(--muted);
  font:inherit;font-weight:600;font-size:13.5px;padding:9px 15px;border-radius:11px;cursor:pointer;transition:.15s}
.subtab:hover{color:var(--text)}
.subtab.active{background:var(--panel2);color:var(--text);border-color:var(--accent)}

/* tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;margin-bottom:20px}
.tile{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.tile .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.07em}
.tile .value{font-size:28px;font-weight:800;margin-top:6px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.tile .sub{color:var(--faint);font-size:12.5px;margin-top:3px}
.tile.accent .value{color:var(--accent)}
.tile.good .value{color:var(--good)}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
  box-shadow:var(--shadow);margin-bottom:16px}

/* bars */
.bars{display:flex;align-items:flex-end;gap:4px;height:140px}
.bars .bar{flex:1;background:linear-gradient(180deg,var(--accent),color-mix(in srgb,var(--accent) 55%,var(--panel)));
  border-radius:4px 4px 0 0;min-height:2px;position:relative}
.bars .bar:hover::after{content:attr(data-label);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);
  background:var(--panel3);border:1px solid var(--line2);border-radius:6px;padding:3px 7px;font-size:11px;white-space:nowrap;margin-bottom:4px}
.bars .empty{color:var(--faint);font-size:13px;align-self:center;margin:auto}

/* tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em}
td.num{font-variant-numeric:tabular-nums;text-align:right}
.empty-row{color:var(--faint);padding:16px 10px}
.stamp{color:var(--faint);font-size:12px;margin-top:8px}

/* forms */
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}
.field label{color:var(--muted);font-size:12.5px}
.field input,.field textarea,.field select{background:var(--panel2);border:1px solid var(--line2);color:var(--text);
  font:inherit;padding:9px 11px;border-radius:10px;width:100%}
.field textarea{resize:vertical;line-height:1.5}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:1px}
.switch{display:flex;align-items:center;gap:9px;color:var(--text);font-size:14px;margin:8px 0;cursor:pointer}
.switch input{width:18px;height:18px;accent-color:var(--accent)}
.save-bar{display:flex;align-items:center;gap:14px;margin-top:6px;flex-wrap:wrap}
.save-status{font-size:13px;color:var(--muted)}
.save-status.ok{color:var(--good)}
.save-status.err{color:var(--danger)}

/* plans + menu editors */
.plan-row,.btn-row{display:flex;gap:6px;margin-bottom:8px;flex-wrap:wrap}
.plan-row input,.btn-row input{background:var(--panel2);border:1px solid var(--line2);color:var(--text);font:inherit;padding:8px 9px;border-radius:8px}
.plan-row .p-id{width:72px}.plan-row .p-title{flex:1;min-width:120px}.plan-row .p-months{width:64px}.plan-row .p-price{width:82px}.plan-row .p-badge{width:120px}
.plan-row .p-del,.btn-row .mb-del{padding:6px 10px}
.btn-row .mb-label{flex:1;min-width:100px}.btn-row .mb-action{flex:1.4;min-width:140px}
.node-card{border:1px solid var(--line2);border-radius:12px;padding:14px;margin-bottom:12px;background:var(--panel2)}
.node-head{display:flex;gap:8px;margin-bottom:8px}
.node-head .node-id{flex:1;background:var(--panel);border:1px solid var(--line2);color:var(--text);font:inherit;padding:8px 10px;border-radius:8px}
.node-card .node-text{width:100%;background:var(--panel);border:1px solid var(--line2);color:var(--text);font:inherit;padding:9px 11px;border-radius:9px;resize:vertical;line-height:1.5;margin-bottom:8px}
.node-buttons{margin-bottom:8px}

/* dashboard period + charts + diagram */
.period{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.segmented{display:inline-flex;background:var(--panel2);border:1px solid var(--line2);border-radius:13px;padding:3px;gap:2px;flex-wrap:wrap}
.segmented button{background:transparent;border:0;color:var(--muted);font:inherit;font-weight:600;font-size:13px;padding:7px 14px;border-radius:10px;cursor:pointer;transition:.18s;white-space:nowrap;-webkit-tap-highlight-color:transparent}
.segmented button:hover{color:var(--text)}
.segmented button.active{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}
.segmented button:active{transform:scale(.96)}
.chart-box{position:relative;height:260px}
.infra{position:relative;height:460px;overflow:hidden;border:1px solid var(--line);border-radius:12px;cursor:grab;
  background:radial-gradient(700px 400px at 80% -10%,color-mix(in srgb,var(--accent) 10%,transparent),transparent 60%),var(--panel2)}
.infra.grabbing{cursor:grabbing}
.infra-world{position:absolute;left:0;top:0;transform-origin:0 0;width:1320px;height:920px}
.infra-svg{position:absolute;inset:0;width:1320px;height:920px;overflow:visible;pointer-events:none}
.infra-node{position:absolute;width:200px;background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:11px 12px;box-shadow:var(--shadow);user-select:none}
.infra-node .in-title{font-size:13.5px;font-weight:700;margin-bottom:4px}
.infra-node .in-meta{font-size:11px;line-height:1.4;color:var(--muted)}
.infra-node.fi{border-color:var(--accent)}
.infra-node.de{border-color:var(--warn)}
.infra-node.ru{border-color:var(--danger)}
.infra-node.user{border-color:var(--good)}
.infra-node.mgmt{border-color:var(--indigo)}
.infra-node.domain{border-color:var(--accent2)}
.infra-edge-label{font-size:10.5px;fill:var(--muted)}
.infra-pulse{stroke-dasharray:7 7;animation:infra-dash 14s linear infinite}
@keyframes infra-dash{to{stroke-dashoffset:-160}}

@media(max-width:820px){
  .grid2{grid-template-columns:1fr}
  .topbar{gap:10px;padding:10px 14px}
  .wrap{padding:18px 14px 48px}
  .nav{order:3;width:100%;flex:1 0 100%}
}

/* subscriptions + payments */
.search{background:var(--panel2);border:1px solid var(--line2);color:var(--text);font:inherit;
  padding:8px 11px;border-radius:10px;min-width:150px}
.search:focus{outline:2px solid var(--accent);outline-offset:1px}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--panel2);border:1px solid var(--line2);color:var(--muted)}
.pill.good{background:color-mix(in srgb,var(--good) 18%,transparent);border-color:transparent;color:var(--good)}
.row-actions{display:flex;gap:6px;white-space:nowrap;justify-content:flex-end}
.row-actions .btn{padding:5px 10px;font-size:12.5px}
.modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;
  padding:20px;background:rgba(4,8,20,.62);backdrop-filter:blur(2px)}
.modal-card{background:var(--panel);border:1px solid var(--line2);border-radius:16px;
  padding:22px 22px 18px;width:100%;max-width:420px;box-shadow:var(--shadow)}

/* online dot, sortable headers, danger */
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px;vertical-align:middle}
.dot.on{background:var(--good);box-shadow:0 0 0 3px color-mix(in srgb,var(--good) 25%,transparent)}
.dot.off{background:#e5484d;box-shadow:0 0 0 3px color-mix(in srgb,#e5484d 20%,transparent)}
th.sortable{cursor:pointer;user-select:none}
th.sortable:hover{color:var(--text)}
.danger-text{color:#e5484d;font-weight:600}
td a{color:var(--accent);text-decoration:none}
td a:hover{text-decoration:underline}
.row-actions .btn.icon{padding:5px 9px;font-size:14px;line-height:1}

/* segmented control */
.seg{display:inline-flex;gap:4px;background:var(--panel2);border:1px solid var(--line2);border-radius:12px;padding:4px;margin-bottom:14px}
.seg button{border:0;background:transparent;color:var(--muted);font:inherit;padding:7px 14px;border-radius:9px;cursor:pointer}
.seg button.active{background:var(--accent);color:#fff;font-weight:600}
.sep{border:0;border-top:1px solid var(--line);margin:16px 0}

/* modal sizes + qr + profile */
.modal-card.small{max-width:360px}
.modal-card.wide{max-width:640px}
.qr-holder{background:#fff;border-radius:14px;padding:14px;width:230px;height:230px;margin:6px auto 12px;display:flex;align-items:center;justify-content:center}
.qr-holder svg{width:100%;height:100%}
.qr-url{font-size:12px;color:var(--muted);word-break:break-all;margin-bottom:14px;max-height:60px;overflow:auto}
.prof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.prof-h{font-size:14px;margin:18px 0 8px;color:var(--muted)}
@media(max-width:560px){.prof-grid{grid-template-columns:1fr}}

/* toast */
#toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);background:var(--panel);
  border:1px solid var(--line2);color:var(--text);padding:11px 18px;border-radius:12px;box-shadow:var(--shadow);
  opacity:0;pointer-events:none;transition:.2s;z-index:80;font-size:14px}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* clickable name + online text + icon buttons */
.sub-name{cursor:pointer;color:var(--text);font-weight:700;text-decoration:none}
.sub-name:hover{color:var(--accent);text-decoration:underline}
.on-txt{color:var(--good);font-weight:600}
.row-actions .btn.icon{display:inline-flex;align-items:center;justify-content:center;padding:6px 8px}
.row-actions .btn.icon svg{display:block}

/* live badge */
.live-badge{display:inline-flex;align-items:center;gap:0;color:var(--good);font-size:12px;font-weight:600;
  padding:6px 10px;border:1px solid var(--line2);border-radius:10px;letter-spacing:.02em}
.live-badge::first-letter{font-size:14px}
.live-badge{animation:livePulse 2s ease-in-out infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.55}}

/* ===== Apple-style polish ===== */
.btn{-webkit-tap-highlight-color:transparent}
.btn:active{transform:scale(.97)}
.card{transition:box-shadow .25s,transform .25s,border-color .2s}
.nav-btn,.subtab,.tabbar-btn,.icon-btn,.seg button{-webkit-tap-highlight-color:transparent}

/* iOS-style toggle switches */
.toggles{display:flex;flex-direction:column;margin-top:8px}
.toggle{display:flex;align-items:center;gap:14px;padding:13px 2px;cursor:pointer;border-top:1px solid var(--line)}
.toggle:first-child{border-top:0}
.toggle>span{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}
.toggle b{font-weight:600;font-size:14px}
.toggle small{color:var(--muted);font-size:12.5px}
.toggle input{position:absolute;opacity:0;width:0;height:0;pointer-events:none}
.toggle i{flex:0 0 auto;width:46px;height:28px;border-radius:999px;background:var(--line2);position:relative;transition:.24s cubic-bezier(.3,1.3,.5,1)}
.toggle i::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.3);transition:.24s cubic-bezier(.3,1.3,.5,1)}
.toggle input:checked + i{background:var(--good)}
.toggle input:checked + i::after{transform:translateX(18px)}
.toggle input:focus-visible + i{outline:2px solid var(--accent);outline-offset:2px}

/* modal motion */
.modal{animation:fadeIn .18s ease}
.modal-card{animation:popIn .24s cubic-bezier(.2,1,.35,1)}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}

/* mobile bottom tab bar */
.tabbar{display:none}
@media(max-width:820px){
  .topbar .nav{display:none}
  .period{flex-wrap:wrap}
  .section-head{flex-wrap:wrap}
  .grid2{grid-template-columns:1fr}
  .wrap{padding:18px 16px 92px}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;gap:2px;
    background:color-mix(in srgb,var(--panel) 92%,transparent);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);padding:7px 6px calc(7px + env(safe-area-inset-bottom))}
  .tabbar-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;background:none;border:0;
    color:var(--faint);font:inherit;font-size:10.5px;font-weight:600;padding:6px 2px;border-radius:12px;cursor:pointer;transition:.15s}
  .tabbar-btn svg{width:23px;height:23px}
  .tabbar-btn.active{color:var(--accent)}
  .tabbar-btn:active{transform:scale(.88)}
}

/* rich text editor (Telegram-style) */
.rich{background:var(--panel2);border:1px solid var(--line2);border-radius:10px;color:var(--text);
  font:inherit;padding:9px 12px;min-height:64px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}
.rich:focus{outline:2px solid var(--accent);outline-offset:1px}
.rich:empty::before{content:attr(data-ph);color:var(--faint)}
.rich blockquote{margin:4px 0;padding:2px 0 2px 11px;border-left:3px solid var(--accent);color:var(--muted)}
.rich code{background:var(--panel3);padding:1px 5px;border-radius:5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}
.rich a{color:var(--accent)}
.tg-spoiler{background:var(--line2);color:transparent;border-radius:4px;padding:0 2px;transition:.18s;cursor:default}
.tg-spoiler:hover{color:inherit;background:color-mix(in srgb,var(--line2) 50%,transparent)}
.fmt-menu{position:fixed;z-index:100;background:var(--panel);border:1px solid var(--line2);border-radius:13px;
  box-shadow:var(--shadow);padding:6px;min-width:224px;animation:popIn .14s ease}
.fmt-menu button{display:flex;justify-content:space-between;align-items:center;gap:24px;width:100%;background:none;border:0;
  color:var(--text);font:inherit;font-size:13.5px;padding:8px 10px;border-radius:9px;cursor:pointer;text-align:left}
.fmt-menu button:hover{background:var(--panel2)}
.fmt-menu kbd{color:var(--faint);font-size:11px;font-family:var(--font)}
.fmt-sep{height:1px;background:var(--line);margin:5px 4px}

/* profile tidy-ups */
.prof-meta{color:var(--muted);font-size:12.5px;margin:14px 0 2px}
.btn-sm{padding:6px 12px;font-size:12.5px}

/* ===== visual menu tree ===== */
.tree{position:relative;height:520px;overflow:hidden;border:1px solid var(--line);border-radius:14px;cursor:grab;
  background:radial-gradient(circle at 1px 1px,var(--line) 1px,transparent 0) 0 0/22px 22px,var(--panel2)}
.tree.grabbing{cursor:grabbing}
.tree-world{position:absolute;left:0;top:0;transform-origin:0 0;width:1000px;min-height:400px}
.tree-svg{position:absolute;inset:0;width:1000px;height:100%;overflow:visible;pointer-events:none}
.mnode{position:absolute;width:250px;background:var(--panel);border:1px solid var(--line2);border-radius:16px;
  padding:12px 13px;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s,border-color .15s,box-shadow .15s;z-index:2}
.mnode:hover{transform:translateY(-2px);border-color:var(--accent)}
.mnode.home{border-color:var(--accent)}
.mnode.sec{width:190px;cursor:default;border-style:dashed;opacity:.9}
.mnode.sec:hover{transform:none;border-color:var(--line2)}
.mnode.page{border-color:var(--indigo)}
.mnode-head{display:flex;align-items:center;justify-content:space-between;gap:8px;font-weight:700;font-size:13.5px}
.mnode-edit{color:var(--faint);font-size:13px}
.mnode-text{color:var(--muted);font-size:11.5px;margin-top:5px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mnode-btns{display:flex;flex-direction:column;gap:5px;margin-top:9px}
.chip{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--panel2);
  border:1px solid var(--line);border-radius:9px;padding:5px 9px;font-size:12px}
.chip span{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chip em{color:var(--accent);font-style:normal;font-size:11px;white-space:nowrap}
.tree-edge{fill:none;stroke:var(--accent);stroke-width:2.4;opacity:.85}
.tree-dot{fill:var(--accent)}
.danger-btn{color:var(--danger)}
@media(max-width:820px){.hide-mobile{display:none}.tree{height:440px}}