:root { --bg: #0e1116; --card: #171b22; --line: #2a303a; --text: #e8eaee; --muted: #9aa3b0; --red: #c8161f; --amber: #ffd23f; }
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(ellipse at 50% -10%, #3a0d10 0%, var(--bg) 60%) fixed, var(--bg);
  color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: grid; place-items: center; padding: 16px;
}
.card { width: 100%; max-width: 380px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 32px 28px 24px; text-align: center; box-shadow: 0 20px 60px #0008; }
.badge { width: 76px; height: 76px; }
h1 { font-size: 22px; margin: 12px 0 2px; letter-spacing: .3px; }
.sub { color: var(--amber); margin: 0 0 24px; font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 1.5px; }
form { text-align: left; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
input { width: 100%; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--line); background: #0d1015; color: var(--text); font-size: 17px; letter-spacing: 2px; font-family: ui-monospace, Consolas, monospace; }
input:focus { outline: 2px solid var(--amber); outline-offset: 1px; }
button { width: 100%; margin-top: 14px; padding: 12px; border: 0; border-radius: 8px; background: var(--red); color: #fff; font-weight: 700; font-size: 16px; cursor: pointer; }
button:hover { background: #e01e28; }
#err { color: #ff6b6b; min-height: 20px; margin: 10px 0 0; font-size: 14px; }
.foot { color: var(--muted); font-size: 12px; margin: 18px 0 0; }