body {
      min-height: 100vh; background: #0d1117;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #e6edf3;
    }
    body::before {
      content: ""; position: fixed; inset: 0;
      background: radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0,150,255,.12) 0%, transparent 60%),
                  radial-gradient(ellipse 60% 50% at 80% 90%, rgba(0,230,150,.09) 0%, transparent 55%);
      pointer-events: none;
    }
    .wrap { position: relative; width: 100%; max-width: 420px; padding: 0 16px; display: flex; flex-direction: column; align-items: center; gap: 32px; }
    .brand { text-align: center; }
    .brand-icon { width: 64px; height: 64px; background: linear-gradient(135deg, #0096ff, #00e676); border-radius: 18px; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 30px; box-shadow: 0 4px 24px rgba(0,150,255,.35); }
    .brand-name { font-size: 26px; font-weight: 800; background: linear-gradient(90deg, #4fc3f7, #00e676); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .brand-sub { margin-top: 4px; font-size: 13px; color: #8b949e; letter-spacing: 0.5px; text-transform: uppercase; }
    .card { width: 100%; background: #161b22; border: 1px solid #30363d; border-radius: 16px; padding: 36px 32px; box-shadow: 0 8px 32px rgba(0,0,0,.5); }
    .card-title { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
    .card-sub { font-size: 13px; color: #8b949e; margin-bottom: 28px; }
    .form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
    label { font-size: 13px; font-weight: 600; color: #c9d1d9; }
    .input-wrap { position: relative; }
    .input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 16px; pointer-events: none; opacity: .6; }
    input[type="email"] { width: 100%; padding: 11px 14px 11px 38px; background: #0d1117; border: 1px solid #30363d; border-radius: 10px; font-size: 14px; color: #e6edf3; outline: none; transition: border-color .2s, box-shadow .2s; }
    input:focus { border-color: #0096ff; box-shadow: 0 0 0 3px rgba(0,150,255,.18); }
    .btn { width: 100%; padding: 13px; background: linear-gradient(135deg, #0096ff, #00c6a0); border: none; border-radius: 10px; font-size: 15px; font-weight: 700; color: #fff; cursor: pointer; transition: opacity .2s; }
    .btn:hover { opacity: .88; }
    .alert { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 20px; }
    .alert.error { background: rgba(244,67,54,.12); border: 1px solid rgba(244,67,54,.4); color: #f44336; }
    .alert.success { background: rgba(0,230,118,.1); border: 1px solid rgba(0,230,118,.3); color: #00e676; }
    .footer { font-size: 13px; color: #8b949e; text-align: center; }
    .footer a { color: #4fc3f7; text-decoration: none; font-weight: 600; }
    .footer a:hover { text-decoration: underline; }