:root{--paper:#090a0c;--white:#111318;--ink:#f4f4f5;--text:#d4d4d8;--muted:#85858e;--line:#272a31;--red:#ef303b;--red-strong:#d9232e;--radius:15px}
*{box-sizing:border-box}
.hidden{display:none!important}
body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(circle at 70% -20%,#2c1417 0,transparent 35%),var(--paper);
  font:15px/1.5 "Segoe UI Variable","Segoe UI",Arial,sans-serif;color:var(--text)}
button,input{font:inherit}
button{cursor:pointer}
button:focus-visible,input:focus-visible{outline:3px solid var(--red);outline-offset:2px}

.login-shell{width:100%;max-width:400px}
.login-brand{display:flex;justify-content:center;margin-bottom:28px}
.login-brand img{width:210px;height:auto;filter:drop-shadow(0 10px 26px #0009)}

.login-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 32px;box-shadow:0 20px 60px #00000066}
.login-card h1{margin:0 0 6px;font:600 22px/1.25 Bahnschrift,"Arial Narrow",sans-serif;color:var(--ink);letter-spacing:.01em}
.login-card>p{margin:0 0 26px;color:var(--muted);font-size:12px}

.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:12px;color:var(--text);font-weight:500}
.field input{padding:12px 13px;border:1px solid var(--line);border-radius:8px;
  background:#17191e;color:var(--ink);font-size:13px;transition:border-color .15s}
.field input:focus-visible{border-color:var(--red)}
.field input::placeholder{color:#5c5c64}

.login-error{background:#251719;border:1px solid #5b292e;color:#ff7c84;font-size:12px;
  line-height:1.7;padding:12px 14px;border-radius:9px;margin-bottom:18px}

.login-submit{width:100%;margin-top:4px;padding:13px 16px;border:1px solid var(--red-strong);
  border-radius:8px;background:var(--red-strong);color:#fff;font-size:13px;font-weight:600;
  letter-spacing:.2px;transition:background .15s,border-color .15s}
.login-submit:hover{background:var(--red)}
.login-submit:disabled{opacity:.6;cursor:not-allowed}

.login-footer{text-align:center;margin-top:22px;font-size:10px;color:#5c5c64;letter-spacing:.4px}

@media(max-width:420px){
  .login-card{padding:28px 22px}
  .login-brand img{width:170px}
}