:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --text:#172033;
  --muted:#7b8798;
  --border:#e4e9f1;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.login-body{
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:
    radial-gradient(circle at 15% 15%,rgba(37,99,235,.13),transparent 30%),
    radial-gradient(circle at 85% 85%,rgba(99,102,241,.10),transparent 30%),
    #f4f7fb;
}
.login-shell{width:100%;max-width:430px}
.login-card{
  width:100%;
  background:#fff;
  border:1px solid var(--border);
  border-radius:22px;
  padding:36px;
  box-shadow:0 20px 60px rgba(15,23,42,.10);
}
.login-logo{
  width:58px;height:58px;
  margin:0 auto 20px;
  border-radius:17px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2563eb,#4f46e5);
  color:#fff;
  font-size:24px;font-weight:800;
  box-shadow:0 10px 25px rgba(37,99,235,.25);
}
.login-card h1{
  margin:0;
  text-align:center;
  color:var(--text);
  font-size:27px;
  line-height:1.2;
  font-weight:750;
}
.login-card>p{
  margin:8px 0 28px;
  text-align:center;
  color:var(--muted);
  font-size:14px;
}
.login-form label{
  display:block;
  margin-bottom:17px;
  color:#526075;
  font-size:13px;
  font-weight:650;
}
.login-form input{
  display:block;
  width:100%;
  height:48px;
  margin-top:8px;
  padding:0 13px;
  border:1px solid #d9e0ea;
  border-radius:11px;
  background:#fff;
  color:#172033;
  font:inherit;
  font-size:14px;
  outline:none;
  transition:.15s ease;
}
.login-form input:hover{border-color:#b8c4d5}
.login-form input:focus{
  border-color:#5b8def;
  box-shadow:0 0 0 4px rgba(37,99,235,.10);
}
.login-btn{
  width:100%;
  min-height:48px;
  margin-top:3px;
  border:0;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:.15s ease;
}
.login-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}
.login-btn:active{transform:translateY(0)}
.login-btn:disabled{opacity:.65;cursor:not-allowed;transform:none}
.login-error{
  min-height:20px;
  margin:0 0 7px;
  color:#dc2626;
  font-size:12px;
  line-height:1.5;
}
.login-footer{
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid #edf0f4;
  text-align:center;
  color:#98a2b3;
  font-size:11px;
}
@media(max-width:520px){
  .login-body{padding:16px}
  .login-card{
    padding:27px 20px;
    border-radius:18px;
  }
  .login-logo{width:54px;height:54px;margin-bottom:17px}
  .login-card h1{font-size:23px}
  .login-card>p{font-size:13px;margin-bottom:23px}
}
@media(max-width:360px){
  .login-body{padding:10px}
  .login-card{padding:23px 16px}
  .login-card h1{font-size:21px}
}