:root {
  --bg: #0b1220;
  --panel: #131c2e;
  --line: #24314b;
  --ink: #e8edf6;
  --muted: #94a3bb;
  --accent: #d99a3c;
  --danger: #e2685f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.gate {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 36px 32px 28px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

.mark {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 22px;
}

h1 { margin: 0 0 10px; font-size: 25px; letter-spacing: -.01em; }

.sub { margin: 0 0 26px; color: var(--muted); font-size: 14.5px; }

label {
  display: block;
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

input {
  width: 100%;
  padding: 13px 14px;
  font-size: 17px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .05em;
  color: var(--ink);
  background: #0d1526;
  border: 1px solid var(--line);
  border-radius: 9px;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(217, 154, 60, .18);
}

button {
  width: 100%;
  margin-top: 16px;
  padding: 13px;
  font-size: 15px;
  font-weight: 650;
  color: #1a1206;
  background: var(--accent);
  border: 0;
  border-radius: 9px;
  cursor: pointer;
}

button:hover { background: #e7a94b; }

.fine {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}

.err {
  margin: 0 0 20px;
  padding: 11px 13px;
  border-radius: 9px;
  background: rgba(226, 104, 95, .12);
  border: 1px solid rgba(226, 104, 95, .35);
  color: #f0a9a2;
  font-size: 14px;
}

a { color: var(--accent); }