/* ITOps design system — mobile-first, progressively enhanced:
   base (mobile) → 768 tablet → 1200 desktop → 1920 large → 2560 32"+/4K */
:root{
  --primary:#3454d1; --primary-ink:#fff; --secondary:#0f9d8a;
  --bg:#f5f6f8; --surface:#fff; --surface-2:#f0f2f5; --border:#e2e5ea;
  --text:#18202b; --muted:#5d6878; --focus:#3454d1;
  --ok:#1a8d4f; --warn:#b7791f; --bad:#c53030; --info:#2b6cb0;
  --radius:12px; --radius-sm:8px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-lg:0 12px 32px rgba(16,24,40,.18);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",Ubuntu,sans-serif;
  --header-h:56px; --bottom-h:62px; --sidebar-w:260px; --tap:44px;
  --fs:clamp(14px,.25vw + 13px,16px);
}
[data-theme=dark]{
  --bg:#0f141b; --surface:#171e27; --surface-2:#1f2833; --border:#2c3642;
  --text:#e6ebf1; --muted:#9aa6b4; --primary:#6f8cff; --primary-ink:#0b1020; --focus:#8fa6ff;
  --shadow:0 1px 2px rgba(0,0,0,.4); --shadow-lg:0 12px 32px rgba(0,0,0,.6);
}
@media (prefers-color-scheme:dark){[data-theme=auto]{
  --bg:#0f141b; --surface:#171e27; --surface-2:#1f2833; --border:#2c3642;
  --text:#e6ebf1; --muted:#9aa6b4; --primary:#6f8cff; --primary-ink:#0b1020; --focus:#8fa6ff;}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:var(--fs)/1.5 var(--font);background:var(--bg);color:var(--text);overflow-x:hidden}
a{color:var(--primary);text-decoration:none} a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
h1{font-size:1.35rem;margin:0} h2{font-size:1.1rem;margin:0 0 .75rem} h3{font-size:1rem;margin:0 0 .5rem}
.icon{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.muted{color:var(--muted)} .small{font-size:.85em} .nowrap{white-space:nowrap} .right{text-align:right}
.row{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap} .grow{flex:1 1 auto;min-width:0}
.stack>*+*{margin-top:1rem}

/* ---------- shell ---------- */
.app-header{position:sticky;top:0;z-index:40;height:var(--header-h);display:flex;align-items:center;gap:.25rem;
  padding:0 .5rem;background:var(--surface);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;color:var(--text);padding:0 .25rem;min-width:0}
.brand img{height:28px;width:auto}
.brand .logo{width:30px;height:30px;border-radius:8px;background:var(--primary);color:var(--primary-ink);display:grid;place-items:center;font-size:.8rem}
.brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.iconbtn{position:relative;width:var(--tap);height:var(--tap);display:inline-grid;place-items:center;border:0;background:none;
  color:var(--text);border-radius:50%;cursor:pointer;flex:none}
.iconbtn:hover{background:var(--surface-2);text-decoration:none}
.dot{position:absolute;top:6px;right:6px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--bad);color:#fff;font-size:11px;line-height:18px;text-align:center}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--secondary);color:#fff;display:grid;place-items:center;font-weight:600;font-size:.8rem;object-fit:cover}
.header-search{display:none;flex:1;max-width:560px;margin:0 1rem}
.header-search input{width:100%;height:40px;border-radius:20px;border:1px solid var(--border);background:var(--surface-2);padding:0 1rem 0 2.5rem;color:var(--text)}
.header-search{position:relative} .header-search .icon{position:absolute;left:12px;top:10px;color:var(--muted)}
.spacer{flex:1}
form.inline{display:inline-flex;margin:0}
.chips{display:flex;gap:.4rem;overflow-x:auto;padding-bottom:.25rem;margin-bottom:.75rem}
.chips a{flex:none;padding:.35rem .8rem;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.85rem;font-weight:600}
.chips a.on{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.chips a:hover{text-decoration:none}

.sidebar{position:fixed;z-index:60;inset:0 auto 0 0;width:min(86vw,var(--sidebar-w));background:var(--surface);
  border-right:1px solid var(--border);transform:translateX(-100%);transition:transform .2s;overflow-y:auto;padding:.5rem 0 5rem}
.sidebar.open{transform:none;box-shadow:var(--shadow-lg)}
.scrim{position:fixed;inset:0;z-index:55;background:rgba(10,15,25,.45);display:none}
.scrim.show{display:block}
.nav{list-style:none;margin:0;padding:0 .5rem}
.nav ul{list-style:none;margin:0;padding:0 0 0 1.1rem;display:none}
.nav li.expanded>ul{display:block}
.nav a,.nav .nav-head{display:flex;align-items:center;gap:.75rem;min-height:var(--tap);padding:0 .75rem;border-radius:22px;color:var(--text);font-weight:500}
.nav a:hover{background:var(--surface-2);text-decoration:none}
.nav a.active{background:color-mix(in srgb,var(--primary) 14%,transparent);color:var(--primary)}
.nav li{position:relative} .nav li.has-children>a{padding-right:2.75rem}
.nav .toggle{position:absolute;right:6px;top:6px;border:0;background:none;color:var(--muted);width:32px;height:32px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.nav .toggle:hover{background:var(--surface-2)} .nav li.expanded>.toggle{transform:rotate(180deg)}
.nav .section{padding:1rem .75rem .25rem;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:700}
.nav .sep{height:1px;background:var(--border);margin:.5rem .75rem}
.nav .disabled{opacity:.45;pointer-events:none}
.badge{display:inline-block;min-width:22px;padding:0 .45rem;border-radius:11px;font-size:.75rem;line-height:20px;text-align:center;background:var(--surface-2);color:var(--muted);font-weight:600}
.nav .badge{margin-left:auto}
.badge.alert{background:var(--bad);color:#fff} .badge.status{background:var(--primary);color:var(--primary-ink)}

main{padding:1rem .75rem calc(var(--bottom-h) + 5rem);min-width:0}
.container{width:100%;margin:0 auto}
.page-head{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:1rem}
.page-head h1{flex:1 1 auto}
.crumbs{font-size:.8rem;color:var(--muted);margin-bottom:.25rem;display:flex;flex-wrap:wrap;gap:.25rem}
.crumbs a{color:var(--muted)}

.bottom-nav{position:fixed;z-index:45;left:0;right:0;bottom:0;height:var(--bottom-h);display:flex;background:var(--surface);
  border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}
.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:.7rem;color:var(--muted);position:relative}
.bottom-nav a.active{color:var(--primary)} .bottom-nav a:hover{text-decoration:none}
.bottom-nav .badge{position:absolute;top:4px;left:calc(50% + 4px);background:var(--bad);color:#fff;min-width:18px;line-height:18px}
.fab{position:fixed;z-index:46;right:16px;bottom:calc(var(--bottom-h) + 16px);width:56px;height:56px;border-radius:18px;border:0;
  background:var(--primary);color:var(--primary-ink);box-shadow:var(--shadow-lg);display:grid;place-items:center;cursor:pointer}
.fab .icon{width:26px;height:26px}

/* ---------- surfaces ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem;min-width:0}
.card h2{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.grid{display:grid;gap:1rem;grid-template-columns:minmax(0,1fr)}
.kpis{display:grid;gap:.75rem;grid-template-columns:repeat(2,minmax(0,1fr))}
.kpi{padding:.9rem 1rem} .kpi b{display:block;font-size:1.6rem;line-height:1.2} .kpi span{color:var(--muted);font-size:.8rem}
.kpi.bad b{color:var(--bad)} .kpi.ok b{color:var(--ok)}
.grid .wide{grid-column:1/-1}
.split{display:grid;gap:1rem;grid-template-columns:minmax(0,1fr)}

/* ---------- controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-height:40px;padding:0 1rem;border-radius:20px;
  border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--surface-2);text-decoration:none}
.btn.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--bad)} .btn.sm{min-height:32px;padding:0 .7rem;font-size:.85rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}
label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.3rem}
input,select,textarea{width:100%;min-height:var(--tap);padding:.55rem .75rem;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text);font:inherit}
textarea{min-height:110px;resize:vertical}
input,select,textarea{max-width:100%}
input[type=checkbox],input[type=radio]{width:20px;height:20px;min-height:0;accent-color:var(--primary);vertical-align:middle}
input[type=color]{padding:2px;width:64px}
.form-grid{display:grid;gap:1rem;grid-template-columns:minmax(0,1fr)}
.form-grid .full{grid-column:1/-1}
.hint{font-size:.78rem;color:var(--muted);margin-top:.25rem}
.req::after{content:" *";color:var(--bad)}
.form-actions{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:flex-end;margin-top:1rem}
.check{display:flex;gap:.5rem;align-items:center;font-weight:500;min-height:var(--tap)}
.filters{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.25rem;margin-bottom:.75rem;scrollbar-width:thin}
.filters>*{flex:0 0 auto;width:auto;min-width:130px;max-width:300px}
.filters input[type=search]{min-width:180px}

/* ---------- alerts / pills ---------- */
.flash{padding:.75rem 1rem;border-radius:var(--radius-sm);margin-bottom:1rem;border:1px solid}
.flash.ok{background:color-mix(in srgb,var(--ok) 10%,var(--surface));border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.flash.error{background:color-mix(in srgb,var(--bad) 10%,var(--surface));border-color:color-mix(in srgb,var(--bad) 40%,transparent)}
.pill{display:inline-flex;align-items:center;gap:.3rem;padding:.1rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600;
  background:color-mix(in srgb,var(--c,var(--muted)) 14%,transparent);color:var(--c,var(--muted));white-space:nowrap}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}

/* ---------- tables: cards on mobile, dense table from 768 ---------- */
.table{width:100%;border-collapse:collapse}
.table thead{display:none}
.table tr{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:.6rem;padding:.6rem .8rem}
.table td{display:flex;gap:1rem;justify-content:space-between;padding:.2rem 0;border:0;min-width:0}
.table td::before{content:attr(data-label);color:var(--muted);font-size:.8rem;flex:none}
.table td.primary-cell{font-weight:600;font-size:1rem}
.table td.primary-cell::before{display:none}
.table td>*{min-width:0;overflow-wrap:anywhere;text-align:right}
.table td.primary-cell>*{text-align:left}
.empty{padding:2rem;text-align:center;color:var(--muted)}
.pager{display:flex;gap:.5rem;justify-content:center;align-items:center;margin-top:1rem}

/* ---------- bars (charts) ---------- */
.bars{display:grid;gap:.5rem}
.bar{display:grid;grid-template-columns:minmax(80px,38%) 1fr auto;gap:.5rem;align-items:center;font-size:.85rem}
.bar span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar i{display:block;height:10px;border-radius:5px;background:var(--primary);min-width:2px}
.cols{display:flex;align-items:flex-end;gap:6px;height:160px;padding-top:1rem}
.cols div{flex:1;min-width:0;overflow:hidden;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end;font-size:.7rem;color:var(--muted)}
.cols i{display:block;width:100%;max-width:36px;background:var(--secondary);border-radius:6px 6px 2px 2px;min-height:2px}

/* ---------- timeline / comments ---------- */
.timeline{list-style:none;margin:0;padding:0;border-left:2px solid var(--border)}
.timeline li{position:relative;padding:0 0 1rem 1rem}
.timeline li::before{content:"";position:absolute;left:-7px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:2px solid var(--primary)}
.timeline time{display:block;font-size:.75rem;color:var(--muted)}
.comment{border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem;margin-bottom:.75rem}
.comment.private{background:color-mix(in srgb,var(--warn) 9%,var(--surface));border-color:color-mix(in srgb,var(--warn) 45%,transparent)}
.dl{display:grid;grid-template-columns:minmax(0,40%) minmax(0,1fr);gap:.4rem 1rem;margin:0}
.dl dt{color:var(--muted);font-size:.85rem} .dl dd{margin:0;overflow-wrap:anywhere}
.prose{overflow-wrap:anywhere;max-width:78ch}

/* ---------- modal: bottom sheet on mobile, dialog from 768 ---------- */
.modal{position:fixed;inset:0;z-index:80;display:none;align-items:flex-end;justify-content:center;background:rgba(10,15,25,.5)}
.modal.open{display:flex}
.modal .sheet{width:100%;max-height:88vh;overflow:auto;background:var(--surface);border-radius:18px 18px 0 0;padding:1rem;box-shadow:var(--shadow-lg)}
.modal .sheet::before{content:"";display:block;width:40px;height:4px;border-radius:2px;background:var(--border);margin:0 auto .75rem}
.menu-list{list-style:none;margin:0;padding:0}
.menu-list a{display:flex;align-items:center;gap:.75rem;min-height:48px;padding:0 .5rem;border-radius:10px;color:var(--text)}
.menu-list a:hover{background:var(--surface-2);text-decoration:none}

/* ---------- tree builder (menus + org) ---------- */
.tree,.tree ol{list-style:none;margin:0;padding:0}
.tree ol{padding-left:.6rem;border-left:2px dashed var(--border);margin-left:.9rem}
@media (min-width:768px){.tree ol{padding-left:1.5rem;margin-left:1.1rem}}
.tree ol:empty{display:none}
.node{display:flex;flex-wrap:wrap;align-items:center;gap:.25rem;min-height:48px;margin:.3rem 0;padding:0 .25rem;background:var(--surface);
  border:1px solid var(--border);border-radius:10px;touch-action:auto}
.node.selected{border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 30%,transparent)}
.node .handle{touch-action:none;cursor:grab;color:var(--muted);width:40px;height:44px;display:grid;place-items:center;border:0;background:none}
.node .title{flex:1 1 0;min-width:min(45%,160px);display:flex;align-items:center;gap:.5rem;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;cursor:pointer;min-height:44px}
.node .meta{font-size:.72rem;color:var(--muted)}
.node .tools{display:flex;margin-left:auto}
.node .tools .iconbtn{width:36px;height:36px}
.node .tools [data-move]{display:none}
.node.selected .tools [data-move],.node:focus-within .tools [data-move]{display:inline-grid}
.tree.dragging .tools [data-move]{display:none!important}
.sheet-md .sheet{position:relative}
@media (min-width:768px){.modal.sheet-md{position:static;display:block;background:none;z-index:auto}
  .modal.sheet-md .sheet{width:auto;max-height:none;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);padding:1rem}
  .modal.sheet-md [data-close]{display:none}}
.icon-set{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:4px;max-height:160px;overflow:auto;margin-top:.4rem}
.icon-set button{height:40px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);cursor:pointer;display:grid;place-items:center}
.icon-set button:hover{border-color:var(--primary)}
.node.is-off .title{opacity:.5;text-decoration:line-through}
.tree li.collapsed>ol{display:none}
.drag-ghost{position:fixed;z-index:100;pointer-events:none;opacity:.9;box-shadow:var(--shadow-lg);width:min(360px,80vw)}
.drop-before>.node{box-shadow:0 -3px 0 var(--primary)}
.drop-after>.node{box-shadow:0 3px 0 var(--primary)}
.drop-inside>.node{background:color-mix(in srgb,var(--primary) 12%,var(--surface));border-color:var(--primary)}
li.drag-src>.node{opacity:.35}

/* ---------- matrix ---------- */
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}
.matrix{border-collapse:collapse;font-size:.85rem;min-width:100%}
.matrix th,.matrix td{border-bottom:1px solid var(--border);padding:.4rem .5rem;text-align:center}
.matrix th:first-child,.matrix td:first-child{text-align:left;position:sticky;left:0;background:var(--surface)}
.matrix tr.group td{background:var(--surface-2);font-weight:700;text-align:left}

/* ---------- auth / installer ---------- */
.auth{min-height:100vh;display:grid;place-items:center;padding:1rem}
.auth .card{width:100%;max-width:460px;padding:1.5rem}
.steps{display:flex;gap:.3rem;margin-bottom:1rem} .steps i{flex:1;height:4px;border-radius:2px;background:var(--border)} .steps i.on{background:var(--primary)}
.req-list{list-style:none;padding:0;margin:0} .req-list li{display:flex;justify-content:space-between;align-items:center;gap:.75rem;padding:.4rem 0;border-bottom:1px solid var(--border)}
.req-list li>span:first-child{min-width:0;overflow-wrap:anywhere}
.req-list .pill{flex:none}
.auth .card{overflow-wrap:anywhere}

/* ======= TABLET ≥768 ======= */
@media (min-width:768px){
  main{padding:1.25rem 1.5rem 2rem}
  .bottom-nav{display:none}
  .fab{bottom:24px;right:24px}
  .header-search{display:block} .m-only{display:none!important}
  .kpis{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid.two,.split{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .modal{align-items:center}
  .modal .sheet{width:min(560px,92vw);border-radius:16px;padding:1.25rem}
  .modal .sheet::before{display:none}
  .table thead{display:table-header-group}
  .table tr{display:table-row;border:0;padding:0;margin:0}
  .table th{text-align:left;font-size:.78rem;color:var(--muted);font-weight:600;padding:.6rem .75rem;border-bottom:1px solid var(--border);white-space:nowrap}
  .table td{display:table-cell;padding:.6rem .75rem;border-bottom:1px solid var(--border);vertical-align:middle}
  .table td::before{display:none}
  .table td>*{text-align:left}
  .table td.primary-cell{font-size:inherit}
  .table tbody tr:hover{background:var(--surface-2)}
  .table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto}
  .split.detail{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
  .builder{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
/* ======= DESKTOP ≥1200: persistent sidebar ======= */
@media (min-width:1200px){
  .app-header .menu-toggle{display:none}
  .sidebar{transform:none;top:var(--header-h);width:var(--sidebar-w);box-shadow:none;z-index:30}
  .scrim{display:none!important}
  .shell{margin-left:var(--sidebar-w)}
  main{padding:1.5rem 2rem 2rem}
  .kpis{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
  .form-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .filters{flex-wrap:wrap;overflow:visible}
  .builder{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
}
/* ======= LARGE ≥1920 ======= */
@media (min-width:1920px){
  :root{--sidebar-w:288px}
  .container{max-width:1760px}
  .grid.three,.grid.two{grid-template-columns:repeat(auto-fit,minmax(420px,1fr))}
  .grid .wide{grid-column:span 2}
}
/* ======= 32"+ / 4K ≥2560: multi-panel workspace, readable measure ======= */
@media (min-width:2560px){
  :root{--fs:17px;--sidebar-w:320px}
  .container{max-width:2320px}
  .grid.three,.grid.two{grid-template-columns:repeat(auto-fit,minmax(480px,1fr))}
  .kpis{grid-template-columns:repeat(6,minmax(0,1fr))}
  .split.detail{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,.8fr)}
}
@media (hover:none){.node .handle{width:48px}}
@media print{.sidebar,.app-header,.bottom-nav,.fab,.no-print,.filters{display:none!important}.shell{margin:0}main{padding:0}.card{box-shadow:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}