:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #dfe5ee;
  --blue: #1d5fd1;
  --red: #c7352b;
  --green: #138a62;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

.authShell {
  width: min(100%, 420px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.brandMark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--blue);
  color: #fff;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.authPanel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

p {
  margin: 0 0 20px;
  color: var(--muted);
  line-height: 1.5;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 12px;
  color: var(--text);
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.status {
  min-height: 20px;
  color: var(--muted);
  font-size: 13px;
}

.status.error {
  color: var(--red);
}

.status.success {
  color: var(--green);
}

.authLinks {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

a {
  color: var(--blue);
  font-weight: 800;
  text-decoration: none;
}