:root{--bg:#0c1223;--panel:#151e32;--panel2:#1d2a43;--text:#f0f4ff;--muted:#adb9d0;--line:#303c57;--accent:#a49dff;--accentText:#11162c;--good:#7ee5b0;--warn:#f2c779;--danger:#ff9fa7;--radius:20px;--shadow:0 14px 34px rgba(0,0,0,.16);--ambient:rgba(100,90,255,.12);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
@media(prefers-color-scheme:light){:root{--bg:#f5f7fc;--panel:#fff;--panel2:#f0f3fa;--text:#18223a;--muted:#64718a;--line:#e2e7f1;--accent:#574fea;--accentText:#fff;--good:#13865a;--warn:#97630e;--danger:#bc3950;--shadow:0 12px 32px rgba(37,52,87,.055);--ambient:rgba(99,91,255,.07)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;padding:0 10px 24px}.brand img{width:38px;height:38px}.brand strong,.brand small{display:block}.brand small{color:var(--muted);margin-top:2px}nav{display:grid;gap:6px}.nav{border:0;background:transparent;color:var(--muted);text-align:left;padding:12px 14px;border-radius:12px;font:inherit;cursor:pointer}.nav:hover,.nav.active{background:var(--panel2);color:var(--text)}.badge{float:right;background:var(--warn);color:#1a1306;border-radius:999px;padding:1px 7px;font-size:12px}.side-status{margin-top:auto;padding:12px;color:var(--muted);font-size:13px;display:flex;align-items:center;gap:8px}.dot{width:8px;height:8px;border-radius:50%;background:#666}.dot.ok{background:var(--good)}main{min-width:0;padding:28px 34px 70px;max-width:1200px;width:100%;margin:0 auto}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h1{margin:0;font-size:28px;letter-spacing:-.03em}.topbar p{margin:5px 0 0;color:var(--muted)}.top-actions,.row{display:flex;gap:10px;align-items:center}.wrap{flex-wrap:wrap}.between{justify-content:space-between}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.subtle{box-shadow:none;margin-top:14px}.subtle p{color:var(--muted);margin-bottom:0}.gate{max-width:760px;margin:5vh auto}.gate-copy h2{margin-top:0}.gate-copy p,.hint{color:var(--muted)}.form-grid{display:grid;gap:14px;margin:20px 0}.form-grid.two{grid-template-columns:1fr 1fr}.form-grid label,label{display:grid;gap:7px;font-size:13px;color:var(--muted)}input,select,textarea{width:100%;border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:12px;padding:11px 12px;font:inherit;outline:none}input:focus,select:focus,textarea:focus{border-color:#6f7783}.check{display:flex;grid-auto-flow:column;align-items:center;gap:7px}.check input{width:auto}button,.button{border:0;border-radius:12px;padding:11px 14px;font:600 14px/1.1 inherit;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.primary{background:var(--accent);color:var(--accentText)}.ghost{background:var(--panel2);color:var(--text);border:1px solid var(--line)}.danger{background:transparent;color:var(--danger);border:1px solid color-mix(in srgb,var(--danger) 35%,var(--line))}.view{display:none}.view.active{display:block}.toolbar{display:grid;grid-template-columns:1fr 180px 160px;gap:10px;margin-bottom:14px}.message-list{display:grid;gap:10px}.message{display:grid;grid-template-columns:46px 1fr auto;gap:13px;align-items:start;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:15px}.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);font-weight:700}.msg-head{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.msg-head strong{font-size:15px}.meta{font-size:12px;color:var(--muted)}.msg-body{margin:7px 0 0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.45}.otp{display:inline-flex;align-items:center;gap:7px;background:color-mix(in srgb,var(--warn) 16%,var(--panel));border:1px solid color-mix(in srgb,var(--warn) 40%,var(--line));padding:7px 9px;border-radius:10px;margin-top:9px}.otp code{font-size:18px;letter-spacing:.08em}.mini{padding:6px 8px;font-size:12px}.empty{text-align:center;color:var(--muted);margin-top:12px}.compose{max-width:760px}.compose>label{margin:14px 0}.device-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}.device-card h2{font-size:18px;margin:0}.device-head{display:flex;justify-content:space-between;gap:12px}.status-pill{font-size:12px;padding:5px 8px;border-radius:999px;background:var(--panel2);height:max-content}.status-pill.online{color:var(--good)}.device-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:15px 0}.stat{background:var(--panel2);padding:10px;border-radius:12px}.stat b,.stat span{display:block}.stat span{font-size:11px;color:var(--muted);margin-top:2px}.sim-list{display:grid;gap:8px}.sim{border-top:1px solid var(--line);padding-top:9px;display:flex;justify-content:space-between;gap:12px;font-size:13px}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}.settings-grid h2{margin-top:0;font-size:18px}.settings-grid p{color:var(--muted);line-height:1.5}.enroll-result{margin-top:14px}.enroll-result textarea{font-size:11px}.warn{color:var(--warn)!important;font-size:12px}code{background:var(--panel2);padding:2px 5px;border-radius:6px}#toast{position:fixed;z-index:99;right:18px;bottom:18px;background:var(--text);color:var(--bg);padding:11px 14px;border-radius:12px;opacity:0;transform:translateY(10px);transition:.2s;pointer-events:none;max-width:min(420px,calc(100vw - 36px))}#toast.show{opacity:1;transform:none}@media(max-width:760px){.shell{display:block}.sidebar{position:fixed;z-index:20;bottom:0;top:auto;left:0;right:0;width:auto;height:auto;border-right:0;border-top:1px solid var(--line);padding:7px 8px;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(18px)}.brand,.side-status{display:none}nav{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.nav{text-align:center;padding:10px 4px;font-size:12px}.badge{float:none;margin-left:3px}main{padding:20px 14px 88px}.topbar{align-items:flex-start}.topbar h1{font-size:24px}.top-actions{gap:6px}.top-actions button{padding:9px 10px;font-size:12px}.toolbar{grid-template-columns:1fr 1fr}.toolbar #search{grid-column:1/-1}.form-grid.two{grid-template-columns:1fr}.message{grid-template-columns:40px 1fr}.message>.meta{grid-column:2}.device-grid,.settings-grid{grid-template-columns:1fr}.device-stats{grid-template-columns:repeat(3,1fr)}}.side-bottom{margin-top:auto;display:grid;gap:8px}.side-bottom .side-status{margin-top:0;padding:8px 12px}.language{display:grid;gap:6px;padding:0 10px;font-size:12px;color:var(--muted)}.language select{padding:8px 10px;font-size:12px}.label-row{display:flex;align-items:center;gap:7px}.help{position:relative;display:inline-grid;place-items:center;width:20px;height:20px;border:1px solid var(--line);border-radius:50%;color:var(--muted);font-size:12px;line-height:1;cursor:help;outline:none;flex:0 0 auto}.help::after{content:attr(data-tooltip);position:absolute;z-index:120;left:50%;bottom:calc(100% + 9px);width:min(320px,80vw);padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--text);color:var(--bg);font:500 12px/1.45 Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translate(-50%,5px);transition:.15s}.help:hover::after,.help:focus::after{opacity:1;transform:translate(-50%,0)}.device-stats{grid-template-columns:repeat(auto-fit,minmax(105px,1fr))}.device-card h3{margin:0}.device-card p{color:var(--muted);margin:5px 0 0}.sim-list{margin:14px 0}.side-bottom select{width:100%}@media(max-width:760px){.side-bottom{position:fixed;z-index:35;right:10px;top:10px;margin:0;display:block}.side-bottom .side-status{display:none}.language{padding:0}.language>span{display:none}.language select{width:auto;min-width:96px;background:color-mix(in srgb,var(--panel) 94%,transparent);backdrop-filter:blur(14px);box-shadow:var(--shadow)}.help::after{position:fixed;left:14px;right:14px;bottom:82px;width:auto;transform:translateY(5px)}.help:hover::after,.help:focus::after{transform:none}.topbar{padding-top:42px}.device-stats{grid-template-columns:repeat(2,1fr)}}

/* SIM Hub design system: responsive, keyboard-accessible and light/dark aware. */
body{background:radial-gradient(ellipse 70% 45% at 85% -10%,var(--ambient),transparent 80%),var(--bg);line-height:1.5}
.shell{grid-template-columns:256px minmax(0,1fr)}
.sidebar{background:color-mix(in srgb,var(--panel) 78%,var(--bg));padding:28px 16px 22px}
.brand{gap:12px;padding:0 12px 30px}
.brand img{width:46px;height:46px;filter:drop-shadow(0 8px 14px rgba(87,79,234,.22))}
.brand strong{font-size:19px;letter-spacing:-.035em}
.brand small{font-size:12px}
nav{gap:5px}
.nav{display:flex;align-items:center;gap:12px;font-weight:600;font-size:14px;min-height:47px;transition:background .16s,color .16s}
.nav-glyph{width:21px;height:21px;flex:none;display:inline-grid;place-items:center;opacity:.88}
.nav.active{background:color-mix(in srgb,var(--accent) 13%,var(--panel));color:var(--accent)}
.nav:hover:not(.active){background:var(--panel2)}
.nav .badge{margin-left:auto}
main{max-width:1480px;padding:38px clamp(24px,4vw,68px) 80px}
.topbar{margin-bottom:28px;gap:20px}
.topbar h1{font-size:clamp(26px,3vw,34px);font-weight:750}
.topbar p{font-size:14px}
.card{border-color:var(--line);box-shadow:var(--shadow)}
button,.button{font-family:inherit;font-weight:650;transition:transform .15s,filter .15s,background .15s}
button:active,.button:active{transform:translateY(1px)}
button:disabled{opacity:.55;cursor:not-allowed}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,.help:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 42%,transparent);outline-offset:2px}
.primary{box-shadow:0 6px 14px color-mix(in srgb,var(--accent) 18%,transparent)}
.primary:hover{filter:brightness(1.06)}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
input,select,textarea{min-height:44px}
.gate{max-width:630px;padding:clamp(24px,4vw,40px);margin:clamp(22px,5vh,72px) auto;position:relative;overflow:hidden}
.gate::before{content:"";position:absolute;pointer-events:none;right:-110px;top:-140px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 14%,transparent),transparent 65%)}
.gate-mark{display:flex;align-items:center;gap:13px;margin-bottom:26px;font-size:20px;font-weight:750;letter-spacing:-.035em}
.gate-mark img{width:56px;height:56px}
.gate-copy h2{font-size:clamp(22px,3vw,27px);letter-spacing:-.03em}
.gate-copy p{font-size:14px;line-height:1.7}
.gate .form-grid{margin:26px 0}
.gate .row{margin:18px 0}
.gate .hint{font-size:12px;line-height:1.65}
.toolbar{grid-template-columns:minmax(240px,1fr) minmax(150px,200px) minmax(130px,170px);gap:12px;padding:14px}
.message{border-radius:18px;padding:18px;transition:border-color .18s,transform .18s}
.message:hover{border-color:color-mix(in srgb,var(--accent) 36%,var(--line))}
.avatar{border-radius:14px;background:color-mix(in srgb,var(--accent) 12%,var(--panel2));color:var(--accent)}
.otp{border-radius:12px}
.device-card,.settings-grid>.card{min-width:0}
.device-stats{gap:10px}
.stat{padding:12px}
.side-status{font-size:12px}
.dot.ok{box-shadow:0 0 0 4px color-mix(in srgb,var(--good) 13%,transparent)}
@media(max-width:900px) and (min-width:761px){.shell{grid-template-columns:210px minmax(0,1fr)}.sidebar{padding:24px 10px}.nav{gap:8px;padding:12px 10px}.toolbar{grid-template-columns:1fr 1fr}.toolbar #search{grid-column:1/-1}}
@media(max-width:760px){body{padding-bottom:env(safe-area-inset-bottom)}.shell{display:block}
.sidebar{padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--panel) 94%,transparent);box-shadow:0 -12px 28px rgba(0,0,0,.08)}
nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:2px}
.nav{display:flex;min-width:0;min-height:59px;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:7px 2px;font-size:11px;text-align:center;line-height:1.15}
.nav-glyph{width:20px;height:20px}
.nav .badge{position:absolute;margin-left:40px;margin-top:-25px;padding:1px 5px}
main{padding:16px 14px calc(102px + env(safe-area-inset-bottom))}
.topbar{padding-top:38px;margin-bottom:18px}.topbar h1{font-size:25px}
.topbar p{font-size:12px}.top-actions{flex-shrink:0}.top-actions button{padding:9px;font-size:11px}
.card{border-radius:16px;padding:16px}
.gate{padding:24px 19px;margin:6px auto 26px}
.gate-mark{margin-bottom:20px}.gate-mark img{width:48px;height:48px}
.gate .row{align-items:stretch}.gate .row button{flex:1 1 170px}
.toolbar{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px;padding:12px}
.toolbar #search{grid-column:1/-1}.message{gap:10px;padding:13px}
.message-list{gap:9px}.message>.meta{grid-column:2}
.device-grid,.settings-grid{grid-template-columns:minmax(0,1fr)}
.device-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
.side-bottom{top:env(safe-area-inset-top);right:10px}
}
@media(prefers-reduced-motion:reduce){button,.button,.nav,.message,#toast,.help::after{transition:none!important}}

/* Native modal top-layer fixes hit targets irrespective of sticky navigation. */
#stepupDialog{width:min(430px,calc(100vw - 32px));border:1px solid var(--line);border-radius:18px;background:var(--panel);color:var(--text);padding:24px;box-shadow:0 25px 90px rgba(0,0,0,.27)}
#stepupDialog::backdrop{background:rgba(6,12,28,.65);backdrop-filter:blur(3px)}
#stepupDialog h2{margin:0 0 12px;font-size:19px}
#stepupDialog p{color:var(--muted);font-size:13px;line-height:1.5}
#stepupDialog label{margin:16px 0 7px}
#stepupDialog button{min-height:42px}
#enrollCard{scroll-margin-top:85px}