:root{--bg:#0a1020;--panel:#111a2f;--panel2:#17223b;--text:#eef4ff;--muted:#9eb0cd;--line:#2a3858;--accent:#58d2ff;--good:#7be3a1;--bad:#ff8b98;--warn:#ffd778;--radius:16px;--tap:46px;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text)}a{color:var(--accent)}button,input,select,textarea{font:inherit}button,input,select,textarea{min-height:var(--tap)}button{cursor:pointer}.hidden{display:none!important}.shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr;grid-template-rows:64px 1fr;grid-template-areas:"top top" "side main"}.topbar{grid-area:top;position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;padding:0 20px;background:#0c1428;border-bottom:1px solid var(--line)}.brand{font-weight:800;letter-spacing:.08em;text-decoration:none;color:var(--text)}.brand b{color:var(--accent)}.iconbtn{display:none;background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text);min-width:46px}.identity-chip{margin-left:auto;color:var(--muted);font-size:.9rem}.sidebar{grid-area:side;position:sticky;top:64px;height:calc(100vh - 64px);display:flex;flex-direction:column;background:#0d162a;border-right:1px solid var(--line);padding:16px}.sidebar nav{display:grid;gap:8px}.navbtn,.linkbtn{width:100%;text-align:left;border:0;background:transparent;color:var(--muted);padding:12px 14px;border-radius:10px}.navbtn:hover,.navbtn.active,.linkbtn:hover{background:var(--panel2);color:var(--text)}.sidefoot{margin-top:auto;display:grid;gap:8px}.sidefoot a{padding:12px 14px;text-decoration:none}.main{grid-area:main;min-width:0;padding:24px;max-width:1500px;width:100%;margin:0 auto}.notice{padding:14px 16px;border:1px solid var(--line);border-radius:12px;margin-bottom:16px;background:var(--panel)}.notice.error{border-color:#7e3340;color:#ffd5da}.notice.good{border-color:#2c6b47;color:#d8ffe6}.auth-grid{min-height:calc(100vh - 120px);display:grid;grid-template-columns:minmax(280px,460px) minmax(280px,460px);gap:24px;place-content:center}.auth-card,.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.auth-card h1,.auth-card h2,.card h2,.card h3{margin-top:0}.auth-card form,.form-grid{display:grid;gap:14px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid .wide{grid-column:1/-1}label{display:grid;gap:7px;color:var(--muted);font-size:.93rem}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#0b1325;color:var(--text);padding:10px 12px}input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:3px solid rgba(88,210,255,.45);outline-offset:2px}.primary,.secondary,.danger{border:0;border-radius:10px;padding:10px 16px;font-weight:700}.primary{background:var(--accent);color:#06111b}.secondary{background:var(--panel2);color:var(--text);border:1px solid var(--line)}.danger{background:#7e3340;color:white}.textbtn{background:none;border:0;color:var(--accent);padding:8px 0;text-align:left}.pagehead{display:flex;gap:16px;justify-content:space-between;align-items:flex-end;margin-bottom:20px}.pagehead h1{margin:0}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.stack{display:grid;gap:16px}.kpi{font-size:1.65rem;font-weight:800}.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;background:var(--panel2);font-size:.82rem;color:var(--muted)}.badge.good{color:var(--good)}.badge.bad{color:var(--bad)}.toolbar{display:flex;gap:10px;flex-wrap:wrap}.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}.datatable{width:100%;border-collapse:collapse;min-width:760px}.datatable th,.datatable td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.datatable th{font-size:.8rem;text-transform:uppercase;color:var(--muted);letter-spacing:.04em}.mobile-cards{display:none}.arena-title{font-size:1.1rem;font-weight:750}.tech{font-family:ui-monospace,SFMono-Regular,monospace;font-size:.8rem;color:var(--muted)}.empty{padding:28px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:12px}.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}.statusline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.modal{position:fixed;inset:0;background:#000a;display:grid;place-items:center;padding:16px;z-index:60}.modal .card{width:min(520px,100%)}
@media(max-width:980px){.shell{grid-template-columns:220px 1fr}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-grid{grid-template-columns:minmax(280px,560px)}}
@media(max-width:760px){:root{--radius:14px}.shell{display:block}.topbar{height:60px;padding:0 12px}.iconbtn{display:inline-grid;place-items:center}.sidebar{position:fixed;top:60px;left:0;bottom:0;width:min(86vw,320px);height:auto;z-index:50;transform:translateX(-105%);transition:.2s ease;box-shadow:15px 0 30px #0008}.sidebar.open{transform:translateX(0)}.main{padding:16px 12px}.auth-grid{display:grid;grid-template-columns:1fr;min-height:calc(100vh - 90px);place-content:center}.grid,.split,.form-grid{grid-template-columns:1fr}.pagehead{align-items:flex-start;flex-direction:column}.tablewrap{display:none}.mobile-cards{display:grid;gap:12px}.mobile-cards .card{padding:16px}.identity-chip{max-width:50vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toolbar>*{flex:1 1 auto}.primary,.secondary,.danger{min-height:48px}}
@media(max-width:420px){.main{padding:12px 10px}.auth-card,.card{padding:16px}.identity-chip{font-size:.8rem}.grid{gap:12px}}
@media(orientation:landscape) and (max-height:520px) and (max-width:900px){.topbar{height:54px}.sidebar{top:54px}.auth-grid{min-height:auto;padding:10px 0}.auth-card{padding:14px}.main{padding-top:12px}}
/* Responsive containment: customer workflows never require page-level horizontal scrolling. */
html,body{overflow-x:hidden}
.tablewrap{width:100%;max-width:100%;overscroll-behavior-inline:contain}
@media(max-width:980px){.tablewrap{display:none}.mobile-cards{display:grid;gap:12px}}

/* v0.16.0-rc3 account-led operator UX */
.account-context{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:0 0 18px;color:var(--muted)}
.account-context b{color:var(--text)}
.arena-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.arena-card{display:flex;flex-direction:column;gap:14px;min-width:0}
.arena-card .arena-title,.arena-admin-card .arena-title{font-size:1.2rem}
.arena-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
.arena-meta span+span:before{content:'•';margin-right:10px;color:var(--line)}
.card-actions{margin-top:auto}
.card-actions .primary{display:inline-flex;align-items:center;text-decoration:none}
.detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.detail-grid>div{display:grid;gap:3px;min-width:0}
.admin-shortcuts{margin-top:26px}
.shortcut{text-align:left}
.device-card{display:grid;gap:10px}
.device-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
.recent-signins{margin-top:22px}
.recent-signins>summary,.support-id>summary,details>summary{cursor:pointer;color:var(--muted);min-height:44px;display:flex;align-items:center}
.tag-stack{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0}
.support-panel{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.support-panel h3{margin:0 0 8px}
.compact{margin-top:16px}
.demo-card{max-width:720px}

@media(max-width:1100px){.arena-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.arena-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr 1fr}.account-context{align-items:flex-start;flex-direction:column}.device-meta{display:grid;gap:5px}.support-panel .toolbar{display:grid;grid-template-columns:1fr}.support-panel .toolbar>*{width:100%}}
@media(max-width:420px){.detail-grid{grid-template-columns:1fr}.arena-card,.arena-admin-card{padding:16px}.arena-card .primary{width:100%;justify-content:center}}
/* Touch-target hardening for link-style controls. */
.brand{min-height:44px;display:inline-flex;align-items:center}
.primary,.secondary,.danger{min-height:var(--tap);display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.sidefoot a{min-height:44px;display:flex;align-items:center}