:root{--bg:#F4F6FB;--card:#fff;--ink:#0e1a2b;--ink2:#344054;--mut:#667085;--line:#E5E7EB;--line2:#D0D5DD;--blue:#2878F0;--blue2:#1d63d8;--err:#DC5252;--ok:#16A36A;--sh:0 12px 32px rgba(16,24,40,.08)}
@media(prefers-color-scheme:dark){:root{--bg:#0B1020;--card:#131A2B;--ink:#F2F4F8;--ink2:#C3CAD8;--mut:#8E98AD;--line:rgba(255,255,255,.09);--line2:rgba(255,255,255,.18);--blue:#4A8DF5;--blue2:#4A8DF5;--err:#FF8E8E;--ok:#3DD598;--sh:none}}
*{box-sizing:border-box}
html,body{overflow-x:clip}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;padding:20px}
.card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px 28px;box-shadow:var(--sh)}
h1{font-weight:700;font-size:24px;margin:0 0 4px;letter-spacing:-.02em}
p.sub{margin:0 0 20px;color:var(--mut);font-size:14px}
label{display:block;font-weight:500;font-size:13px;margin:14px 0 6px}
input[type=text],input[type=email],input[type=password]{width:100%;height:46px;border:1px solid var(--line2);border-radius:10px;padding:0 12px;background:transparent;color:var(--ink);font:inherit}
input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(40,120,240,.18)}
button:focus-visible,a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.chk{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:13px;color:var(--mut);margin-top:16px}
.chk input{margin-top:3px}
button.go{width:100%;height:46px;margin-top:20px;border:0;border-radius:10px;background:var(--blue);color:#fff;font:inherit;font-weight:600;cursor:pointer;box-shadow:0 1px 2px rgba(40,120,240,.25);transition:filter .15s,transform .15s}
button.go:hover{filter:brightness(1.06)}button.go:active{transform:translateY(1px)}
button.go[disabled]{opacity:.6;cursor:default}
.err{color:var(--err);font-size:13px;margin-top:12px;min-height:18px}
.alt{margin-top:18px;text-align:center;color:var(--mut);font-size:14px}
.alt a{color:var(--blue);font-weight:600;cursor:pointer}
.brand{margin-bottom:22px}.mk{width:44px;height:44px;border-radius:12px;background:var(--blue);display:flex;align-items:center;justify-content:center}.mk .lg{height:24px;width:auto;color:#fff}
.hide{display:none!important}
.ok{color:var(--ok);font-size:14px;margin-top:12px;min-height:18px}
.lnk{display:inline-block;margin-top:14px;font-size:14px;color:var(--blue);font-weight:600;cursor:pointer;text-decoration:none;background:none;border:0;padding:0;font-family:inherit}
.fp{text-align:right;margin-top:8px}.fp a{font-size:13px;color:var(--blue);font-weight:500;text-decoration:none}
button.sec{width:100%;height:46px;margin-top:12px;border:1px solid var(--line2);border-radius:10px;background:transparent;color:var(--ink);font:inherit;font-weight:600;cursor:pointer}
.chk a{color:var(--blue);font-weight:500}
#langsel{margin-top:18px;text-align:center}
#langsel select{height:36px;border:1px solid var(--line2);border-radius:10px;background:transparent;color:var(--mut);font:inherit;font-size:13px;padding:0 10px}
html[dir=rtl] .fp{text-align:left}
html[dir=rtl] .chk{text-align:right}

/* ---- sign-in page: split layout ---- */
body.split{display:block;padding:0;background:var(--bg)}
.auth{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);min-height:100vh}
.hero{position:relative;overflow:hidden;color:#F1F5F9;padding:40px clamp(32px,5vw,72px) 0;display:flex;flex-direction:column;gap:32px;justify-content:center;background:radial-gradient(900px 500px at 85% -10%,#2f6fe0 0,transparent 60%),radial-gradient(700px 500px at -10% 110%,#1b3c7a 0,transparent 60%),#0e1a2b}
.hbrand{display:none}
.hl{height:44px;width:auto;color:#fff;flex:none}
.hcopy{max-width:460px}
.hero h2{margin:0;font-size:clamp(32px,3.6vw,46px);line-height:1.08;letter-spacing:-.03em;font-weight:700;text-wrap:balance}
.hero p{margin:14px 0 0;color:#AAB4C5;font-size:17px;line-height:1.5}
.hero ul{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.hero li{display:flex;gap:12px;align-items:flex-start;color:#DCE3EE;font-size:15px}
.hero li i{flex:none;width:20px;height:20px;border-radius:50%;background:rgba(74,141,245,.22);position:relative;margin-top:1px}
.hero li i::after{content:"";position:absolute;left:6px;top:4px;width:5px;height:9px;border:solid #8DB8FF;border-width:0 2px 2px 0;transform:rotate(45deg)}
.shot{margin-top:auto;margin-right:calc(-1*clamp(32px,5vw,72px));border-radius:14px 0 0 0;overflow:hidden;box-shadow:0 -10px 50px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12);border-right:0;border-bottom:0}
.shot img{width:100%;height:auto;display:block}
.pane{display:grid;place-items:center;padding:32px 20px}
.pane .card{border:0;box-shadow:none;background:transparent;max-width:400px;padding:0}
.mbrand{display:flex;align-items:center;justify-content:center;margin-bottom:24px}
.mbrand .hl{color:var(--blue);height:44px}
.tabs{display:grid;grid-template-columns:1fr 1fr;background:rgba(127,140,165,.14);border-radius:12px;padding:4px;margin-bottom:24px}
.tabs button{height:38px;border:0;border-radius:9px;background:transparent;color:var(--mut);font:inherit;font-weight:600;cursor:pointer;transition:background .15s,color .15s}
.tabs button[aria-selected=true]{background:var(--card);color:var(--ink);box-shadow:0 1px 3px rgba(16,24,40,.12)}
.tabs button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.social{display:grid;gap:10px;margin-bottom:6px}
.sbtn{display:flex;align-items:center;justify-content:center;gap:10px;height:46px;border:1px solid var(--line2);border-radius:10px;color:var(--ink);text-decoration:none;font-weight:600;background:transparent;transition:background .15s,border-color .15s}
.sbtn:hover{background:rgba(127,140,165,.1)}
.sbtn[hidden]{display:none}
.sbtn svg{width:20px;height:20px;flex:none}
.or{display:flex;align-items:center;gap:12px;color:var(--mut);font-size:13px;margin-top:6px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.pwrap{position:relative}
.pwrap input{padding-right:46px}
.pwrap button{position:absolute;right:4px;top:4px;width:38px;height:38px;border:0;border-radius:8px;background:transparent;color:var(--mut);cursor:pointer;display:grid;place-items:center}
.pwrap button:hover{color:var(--ink)}
.pwrap svg{width:20px;height:20px}
html[dir=rtl] .pwrap input{padding-right:12px;padding-left:46px}
html[dir=rtl] .pwrap button{right:auto;left:4px}
.meter{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin-top:8px}
.meter b{height:4px;border-radius:2px;background:var(--line2)}
.meter b.on1{background:var(--err)}.meter b.on2{background:#E8A33D}.meter b.on3{background:var(--ok)}
.note{margin:12px 0 0;text-align:center;color:var(--mut);font-size:13px}
@media(max-width:900px){
 .auth{grid-template-columns:minmax(0,1fr);min-height:0}
 .hero{padding:28px 20px 26px;gap:14px;text-align:center;border-radius:0 0 28px 28px;align-items:center}
 .hbrand{display:flex}
 .hero .hl{height:40px}
 .hcopy{max-width:none}
 .hero h2{font-size:26px}
 .hero p{font-size:14px;margin-top:6px}
 .hero ul,.shot{display:none}
 .mbrand{display:none}
 .pane{align-items:start;padding:24px 20px 32px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}