:root {
  --bg: #0f1115;
  --surface: #171a21;
  --border: #262b36;
  --text: #e7e9ee;
  --muted: #8b91a1;
  --accent: #4f7cff;
  --danger: #ff5a52;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
#root { width: 100%; max-width: 360px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.center { align-items: center; text-align: center; }
h1 { font-size: 20px; font-weight: 700; margin: 0; }
.muted { color: var(--muted); font-size: 13px; margin: 0; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); }
input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  outline: none;
}
input:focus { border-color: var(--accent); }
button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}
button:hover { filter: brightness(1.08); }
.error { color: var(--danger); font-size: 12.5px; margin: 0; }
.badge {
  display: inline-block;
  background: rgba(79, 124, 255, 0.14);
  color: var(--accent);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
}
.logout {
  align-self: flex-end;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 500;
  padding: 6px 10px;
}
.logout:hover { color: var(--text); filter: none; }