.auth-shell{display:grid;grid-template-columns:1fr 1.05fr;min-height:100vh;background:var(--bg-card)}.auth-form-col{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:32px 56px;background:var(--bg-card)}.auth-form{width:100%;max-width:420px}.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:36px}.auth-brand .brand-mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--violet));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px}.auth-brand .brand-name{font-weight:650;font-size:16px;color:var(--ink-1)}.auth-form h1{font-size:32px;font-weight:600;letter-spacing:-.03em;margin:0 0 6px}.auth-form .sub{color:var(--ink-3);font-size:14px;margin:0 0 26px}.social-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}.social-btn{height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line-strong);border-radius:var(--r-sm);background:var(--bg-card);color:var(--ink-1);font-size:13.5px;font-weight:550;cursor:pointer;transition:background .12s ease;font-family:var(--font-sans)}.social-btn:hover{background:var(--bg-soft)}.auth-divider{display:flex;align-items:center;gap:12px;color:var(--ink-4);font-size:12px;margin:4px 0 18px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--line)}.auth-field{position:relative;margin-bottom:14px}.auth-field input,.auth-field select{width:100%;height:44px;padding:0 14px 0 42px;border:1px solid var(--line-strong);border-radius:var(--r-sm);font-size:14px;font-family:var(--font-sans);color:var(--ink-1);background:var(--bg-card);outline:none;transition:border-color .12s ease,box-shadow .12s ease}.auth-field select{padding-left:42px}.auth-field input:focus,.auth-field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #0066ff26}.auth-field .icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-4);display:inline-flex;pointer-events:none}.auth-row-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.strength{height:4px;border-radius:var(--r-pill);background:var(--bg-soft);margin:-6px 0 14px;overflow:hidden;position:relative}.strength:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--coral),var(--gold),var(--green));transform-origin:left;transform:scaleX(var(--strength, 0));transition:transform .25s ease;border-radius:var(--r-pill)}.auth-submit{width:100%;height:44px;border:none;border-radius:var(--r-sm);background:var(--navy);color:#fff;font-size:14.5px;font-weight:600;font-family:var(--font-sans);cursor:pointer;transition:background .12s ease;margin-top:4px}.auth-submit:hover{background:var(--navy-2)}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-links{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:13.5px}.auth-error{background:#ff5a3614;border:1px solid rgba(255,90,54,.3);color:#c33a1b;border-radius:var(--r-sm);padding:10px 12px;font-size:13px;margin-bottom:14px}.auth-success{background:#00c89614;border:1px solid rgba(0,200,150,.3);color:#00805f;border-radius:var(--r-sm);padding:12px 14px;font-size:13.5px;margin-bottom:14px}.auth-brand-col{position:relative;background:radial-gradient(700px 500px at 85% -10%,rgba(0,102,255,.35),transparent 60%),radial-gradient(600px 500px at -10% 110%,rgba(99,91,255,.3),transparent 60%),var(--navy);color:#e6eef8;display:flex;flex-direction:column;justify-content:center;padding:56px;overflow:hidden}.auth-brand-col:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}.auth-hero{position:relative;max-width:520px}.auth-hero h2{font-size:40px;font-weight:650;letter-spacing:-.03em;line-height:1.15;color:#fff;margin:0 0 14px}.auth-hero p{color:#9fb4cc;font-size:15px;margin:0 0 28px}.showcase-card{position:relative;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:var(--r);backdrop-filter:blur(12px);padding:18px 20px}.showcase-card .code{font-family:var(--font-mono);font-size:12.5px;line-height:1.65;white-space:pre;overflow-x:auto;color:#dce6f2}.showcase-card .tok-str{color:#5ee7b7}.showcase-card .tok-num{color:var(--gold)}.showcase-card .tok-bool{color:#a79eff}.showcase-card .tok-key{color:#8fc7ff}@media(max-width:900px){.auth-shell{grid-template-columns:1fr}.auth-brand-col{display:none}.auth-form-col{padding:32px 24px}}