:root{--navy:#173a42;--teal:#00a7a5;--teal-dark:#007b7a;--line:#dce4e5;--muted:#6d7e83}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at 10% 15%,#d8eeee 0,transparent 34%),linear-gradient(135deg,#f8fbfb,#e8f0f1);color:var(--navy);font-family:"Segoe UI",Aptos,Arial,sans-serif}.auth-shell{width:min(980px,100%);min-height:610px;display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden;border-radius:22px;background:#fff;box-shadow:0 28px 70px rgba(23,58,66,.18)}.auth-brand{display:flex;flex-direction:column;justify-content:center;padding:68px;color:#fff;background:linear-gradient(145deg,#102f36,#195761 65%,#087b7b)}.auth-mark{width:58px;height:58px;display:grid;place-items:center;margin-bottom:48px;border:1px solid rgba(255,255,255,.38);border-radius:15px;background:rgba(255,255,255,.1);font-weight:900;letter-spacing:.08em}.auth-brand>p:first-of-type,.eyebrow{margin:0 0 12px;color:#70d7d4;font-size:11px;font-weight:900;letter-spacing:.16em}.auth-brand h1{max-width:460px;margin:0;font:600 39px/1.13 "Segoe UI",Aptos,Arial,sans-serif}.auth-copy{max-width:450px;margin:23px 0 0;color:#c4d9dc;font-size:14px;line-height:1.7}.auth-card{align-self:center;padding:58px}.auth-card h2{margin:0;font:600 32px "Segoe UI",Aptos,Arial,sans-serif}.auth-card>p:not(.eyebrow){margin:10px 0 28px;color:var(--muted);font-size:13px;line-height:1.55}form{display:grid;gap:17px}label{display:grid;gap:7px;color:#43585e;font-size:11px;font-weight:800}input{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:9px;outline:none;color:#203e45;background:#fbfcfc;font:inherit}input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(0,167,165,.12)}button{margin-top:5px;padding:14px 18px;border:0;border-radius:9px;color:#fff;background:var(--teal-dark);font-size:12px;font-weight:900;cursor:pointer}button:hover{background:#006968}button:disabled{opacity:.55;cursor:wait}.auth-error{padding:11px 13px;border-radius:8px;color:#7d2931;background:#fdecee;font-size:11px;line-height:1.45}.hidden{display:none}.security-note{display:block;margin-top:22px;color:#89969a;font-size:10px;line-height:1.5}@media(max-width:760px){body{padding:0;background:#fff}.auth-shell{min-height:100vh;grid-template-columns:1fr;border-radius:0;box-shadow:none}.auth-brand{padding:38px}.auth-mark{margin-bottom:25px}.auth-brand h1{font-size:29px}.auth-card{padding:38px}.auth-copy{display:none}}

/* v6: responsive authentication screens */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
button,input{touch-action:manipulation}
@media(max-width:760px){
  body{min-height:100dvh;padding:0;align-items:start}
  .auth-shell{min-height:100dvh}
  .auth-brand{padding:calc(28px + env(safe-area-inset-top)) 24px 24px}
  .auth-mark{width:50px;height:50px;margin-bottom:20px}
  .auth-brand h1{font-size:27px}
  .auth-card{padding:32px 24px calc(32px + env(safe-area-inset-bottom))}
  .auth-card h2{font-size:29px}
  input{min-height:48px;font-size:16px}
  button{min-height:48px;font-size:14px}
}
@media(max-width:420px){
  .auth-brand{padding-left:20px;padding-right:20px}
  .auth-brand h1{font-size:24px}
  .auth-card{padding-left:20px;padding-right:20px}
}