:root{
  --ink:#15202b; --muted:#5b6775; --bg:#f3f5f8; --card:#fff; --line:#e1e6ec;
  --dark:#0b0e13; --dark-2:#16202b; --accent:#3dd6b0; --accent-ink:#06231c; --brand:#0f6e5a;
  --bad:#b42318; --bad-bg:#fde8e8; --ok:#14633f; --ok-bg:#e3f5ec; --off:#3d4857; --off-bg:#eef1f5;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 "IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
.mono{font-family:"IBM Plex Mono",ui-monospace,Consolas,monospace;font-size:13px}
.muted{color:var(--muted)}.small{font-size:12px}.strong{font-weight:600}.block{display:block}
.right{text-align:right}.nowrap{white-space:nowrap}.grow{flex:1}.pad{padding:16px 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* shell */
.shell{display:flex;flex-wrap:wrap;min-height:100vh}
.sidebar{flex:0 0 232px;background:var(--dark);color:#a7b3c1;padding:20px 12px;display:flex;flex-direction:column;gap:4px}
.content{flex:999 1 560px;min-width:0;padding:28px 32px}
.brand{display:flex;align-items:center;gap:10px;color:#e6edf3;font-weight:600;font-size:17px;padding:4px 10px 20px}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--accent)}
.nav-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;color:#a7b3c1;text-decoration:none;font-weight:500;min-height:44px}
.nav-link.is-active{background:var(--dark-2);color:var(--accent)}
.nav-button{width:100%;background:none;border:0;font:inherit;cursor:pointer;text-align:left}
.who{border-top:1px solid #1f2630;padding:14px 10px 8px;color:#e6edf3}
.who-name{font-size:13px;font-weight:500}.who-role{font-size:12px;color:#8b97a6}

/* page */
.page-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.page-title{margin:0 0 20px;font-size:24px;font-weight:600}
.page-head .page-title{margin:0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.card,.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.panel-flush{padding:0;overflow:hidden}
.card-label{font-size:13px;color:var(--muted);font-weight:500}
.card-value{font-size:32px;font-weight:600;font-family:"IBM Plex Mono",ui-monospace,Consolas,monospace}
.card-sub{font-size:12px;color:var(--muted);min-height:18px}
.panel h2{margin:0 0 10px;font-size:16px}
.stack{display:flex;flex-direction:column;gap:16px}
.split{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-start}
.split>*{flex:1 1 340px;min-width:0}
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{text-align:left;color:var(--muted);font-weight:500;padding:10px 0}
.table td{padding:11px 0;border-top:1px solid #eef1f5;vertical-align:middle}
.table-pad th,.table-pad td{padding-left:16px;padding-right:16px}
.table-pad thead tr{background:#f8fafc}
.pill{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:600}
.pill-ok{background:var(--ok-bg);color:var(--ok)}.pill-bad{background:var(--bad-bg);color:var(--bad)}.pill-off{background:var(--off-bg);color:var(--off)}
ul.plain{margin:0;padding-left:18px;font-size:14px}

/* forms (admin, light) */
.form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500}
.field input,.field select,.toolbar input,.toolbar select{min-height:44px;padding:0 12px;border:1px solid #cdd5de;border-radius:8px;background:#fff;color:var(--ink);font:inherit;font-weight:400}
.field input:disabled{background:var(--off-bg);color:var(--muted)}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.toolbar input{flex:1 1 240px}
.hint{font-size:12px;font-weight:400;color:var(--muted)}
.field-error{font-size:12px;font-weight:500;color:var(--bad)}
.check{display:flex;align-items:center;gap:10px;min-height:32px;font-size:14px}
.check input,.perm input{width:18px;height:18px}
.perm{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid #eef1f5}
.perm:first-of-type{border-top:0}
.form-actions{margin-top:6px}
.inline{display:inline}
.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}
.flash-ok{background:var(--ok-bg);color:var(--ok)}.flash-bad{background:var(--bad-bg);color:var(--bad)}
.tabs{display:flex;gap:4px;background:var(--off-bg);padding:3px;border-radius:8px}
.tab{padding:8px 14px;border-radius:6px;text-decoration:none;color:var(--off);font-size:13px;font-weight:500}
.tab.is-active{background:#fff;color:var(--ink)}
.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:16px}
.pager-link{padding:8px 14px;border:1px solid #cdd5de;border-radius:8px;background:#fff;color:var(--ink);text-decoration:none;font-size:13px}
.pager-link.is-off{color:#9aa5b1;background:var(--off-bg)}

/* streams, groups, dashboard */
.stream-cell{display:flex;align-items:center;gap:12px}
.thumb{width:56px;height:36px;border-radius:6px;object-fit:cover;background:#1c2e2c;flex:none}
.thumb-empty{display:inline-block}
.thumb-lg{width:120px;height:76px}
.tag{background:var(--off-bg);padding:3px 7px;border-radius:6px;font-size:12px}
.fieldset{border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:0}
.fieldset legend{font-size:13px;font-weight:500;padding:0 6px}
.checklist{max-height:240px;overflow-y:auto;display:flex;flex-direction:column}
textarea{border:1px solid #cdd5de;border-radius:8px;padding:10px 12px;font:inherit;font-weight:400;color:var(--ink)}
.field .mono{font-family:"IBM Plex Mono",ui-monospace,Consolas,monospace}
.top-gap{margin-top:16px}
.chart{width:100%;height:auto;max-height:200px}
.bar-ok{fill:#0f6e5a}.bar-fail{fill:#d92d20}
.axis{font-size:11px;fill:var(--muted)}
.legend{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none}
.dot-ok{background:#1a8f5a}.dot-fail,.dot-bad{background:#d92d20}.dot-warn{background:#d98a00}
.status-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px solid #eef1f5;font-size:14px}
.status-row:first-of-type{border-top:0}
.btn-danger{color:var(--bad);border-color:#f0c4bf}

/* devices, settings, branding */
.row2{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.cell-input{min-height:36px;width:100%;min-width:140px;padding:0 10px;border:1px solid #cdd5de;border-radius:6px;font:inherit;background:#fff;color:var(--ink)}
.brand-logo{width:30px;height:30px;border-radius:8px;object-fit:contain;background:#fff}
.logo-preview{max-width:120px;max-height:60px;border-radius:6px;background:#fff;border:1px solid var(--line)}
.form.panel{margin-bottom:16px}
form.form>.panel{margin-bottom:16px}
.theme-dark{--bg:#0b0e13;--card:#12171f;--ink:#e6edf3;--muted:#8b97a6;--line:#1f2630;--off-bg:#1a2230;--off:#a7b3c1;--ok-bg:#10261f;--ok:#8ee6c8;--bad-bg:#2a1a1a;--bad:#ffb4ab}
.theme-dark .table td{border-top-color:#1f2630}
.theme-dark .table-pad thead tr{background:#0e1319}
.theme-dark .field input,.theme-dark .field select,.theme-dark textarea,.theme-dark .toolbar input,.theme-dark .toolbar select,.theme-dark .cell-input,.theme-dark .btn-ghost,.theme-dark .pager-link{background:#12171f;color:#e6edf3;border-color:#2a3442}
.theme-dark .tab.is-active{background:#12171f}
.theme-dark .perm{border-top-color:#1f2630}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;border-radius:8px;border:0;background:var(--accent);color:var(--accent-ink);font:inherit;font-weight:600;cursor:pointer;text-decoration:none;padding:0 18px}
.btn-sm{min-height:44px;padding:0 16px;font-size:14px}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 14px;border-radius:8px;border:1px solid #cdd5de;background:#fff;color:var(--ink);font:inherit;font-size:14px;font-weight:500;cursor:pointer;text-decoration:none}
.btn-ghost.btn-sm{min-height:36px;padding:0 12px;font-size:13px}
a.btn.btn-sm{background:var(--brand);color:#fff}
.form .btn{background:var(--brand);color:#fff}
.link{color:var(--accent);font-size:13px;text-align:center}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------------------------------------------------------------- phones: sidebar becomes a scrolling top bar */
@media (max-width:720px){
  .shell{display:block}
  .sidebar{flex-direction:row;align-items:center;gap:4px;padding:6px 8px;overflow-x:auto;scrollbar-width:none;
    -webkit-overflow-scrolling:touch;position:sticky;top:0;z-index:40}
  .sidebar::-webkit-scrollbar{display:none}
  .sidebar .brand{flex:0 0 auto;padding:0 8px 0 2px}
  .sidebar .brand>span:last-child{display:none}
  .sidebar .nav-link{flex:0 0 auto;white-space:nowrap;padding:0 12px;min-height:44px}
  .sidebar form{flex:0 0 auto}
  .sidebar .nav-button{width:auto}
  .sidebar .grow,.sidebar .who{display:none}
  .content{padding:16px 14px 28px}
  .page-title{font-size:20px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .card-value{font-size:26px}
  .split>*{flex-basis:100%}
  .toolbar>*{flex:1 1 100%}
  .login-card{padding:22px}
  .table-pad th,.table-pad td{padding-left:10px;padding-right:10px}
}

/* auth */
.auth-body{background:var(--dark);color:#e6edf3}
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:400px;display:flex;flex-direction:column;gap:16px;background:#0e1319;border:1px solid #1f2630;border-radius:14px;padding:32px}
.login-card h1{margin:0;font-size:26px}
.login-card .brand{padding:0}
.login-card label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:500}
.login-card input{min-height:48px;padding:0 14px;background:#12171f;border:1px solid #2a3442;border-radius:8px;color:#e6edf3;font:inherit}
.alert{padding:12px 14px;border-radius:8px;background:#2a1a1a;border:1px solid #4a2a2a;color:#ffb4ab;font-size:13px}
.alert-ok{background:#10261f;border-color:#1f4a3a;color:#8ee6c8}