*{margin:0;padding:0;box-sizing:border-box;}
    body{background:#0a0a0a;color:#e0e0e0;font-family:'Segoe UI',system-ui,-apple-system,sans-serif;line-height:1.6;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;}
    .card{width:100%;max-width:380px;background:#0e0e0e;border:1px solid #1a1a1a;border-radius:14px;padding:36px 32px;display:flex;flex-direction:column;gap:20px;}
    .logo{display:flex;align-items:center;gap:10px;margin-bottom:4px;}
    .logo-mark{width:36px;height:36px;background:#0a1a0a;border:1px solid rgba(74,222,128,0.3);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:0.85rem;font-weight:600;color:#4ade80;letter-spacing:-0.02em;}
    .logo-text{font-size:0.9rem;color:#888;}
    h1{font-size:1.4rem;font-weight:300;color:#f0f0f0;letter-spacing:-0.02em;}
    .subtitle{font-size:0.82rem;color:#444;margin-top:-12px;}
    .field{display:flex;flex-direction:column;gap:6px;}
    label{font-size:0.75rem;color:#555;text-transform:uppercase;letter-spacing:0.08em;}
    input[type=email],input[type=password],input[type=text]{background:#111;border:1px solid #222;border-radius:8px;color:#e0e0e0;font-size:0.9rem;padding:10px 14px;outline:none;font-family:inherit;width:100%;transition:border-color .2s;}
    input:focus{border-color:#333;}
    .btn{border:none;border-radius:8px;font-size:0.88rem;padding:11px 18px;cursor:pointer;font-family:inherit;font-weight:500;transition:opacity .2s;}
    .btn-primary{background:#4ade80;color:#0a0a0a;width:100%;}
    .btn-primary:hover{opacity:0.9;}
    .btn-primary:disabled{opacity:0.5;cursor:not-allowed;}
    .btn-google{background:#1a1a1a;color:#ccc;border:1px solid #2a2a2a;width:100%;display:flex;align-items:center;justify-content:center;gap:10px;}
    .btn-google:hover{border-color:#444;color:#fff;}
    .divider{display:flex;align-items:center;gap:10px;color:#2a2a2a;font-size:0.75rem;}
    .divider::before,.divider::after{content:'';flex:1;height:1px;background:#1a1a1a;}
    .error-box{background:#1a0a0a;border:1px solid rgba(248,113,113,0.2);border-radius:8px;padding:10px 14px;font-size:0.82rem;color:#f87171;display:none;}
    .success-box{background:#0a1a0a;border:1px solid rgba(74,222,128,0.2);border-radius:8px;padding:10px 14px;font-size:0.82rem;color:#4ade80;display:none;}
    .link{color:#4ade80;font-size:0.8rem;cursor:pointer;text-align:center;background:none;border:none;font-family:inherit;text-decoration:none;display:block;}
    .link:hover{text-decoration:underline;}
    .back{position:fixed;top:20px;left:24px;font-size:0.8rem;color:#333;text-decoration:none;transition:color .2s;}
    .back:hover{color:#888;}
    /* panels */
    #panel-login,#panel-forgot,#panel-reset,#panel-change-pw{display:flex;flex-direction:column;gap:16px;}
    #panel-forgot,#panel-reset,#panel-change-pw{display:none;}

/* Phase 4 – extracted inline styles */
._p4-502483 {
  font-size: 0.72rem;
  color: #444;
  margin-top: 2px;
}