:root {
  --bg: #0b1220;
  --panel: #111a2b;
  --text: #e6eefc;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #2dd4bf;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
}
.wrap {
  max-width: 420px;
  margin: 80px auto;
  padding: 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
}
h1 {
  margin: 0 0 16px;
  font-size: 20px;
}
label {
  display: block;
  margin: 12px 0 6px;
  font-size: 13px;
  opacity: 0.9;
}
input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0b1220;
  color: var(--text);
}
button {
  margin-top: 16px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 0;
  background: var(--accent);
  color: #06201b;
  font-weight: 700;
  cursor: pointer;
}
.err {
  margin-top: 12px;
  padding: 10px 12px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 10px;
  color: #fecaca;
}