:root {
  --bg: #eef3f8;
  --panel: #ffffff;
  --border: #d3dce7;
  --text: #1f2937;
  --muted: #667085;
  --accent: #173f6d;
  --danger: #b42318;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.auth-card {
  width: min(440px, 100%);
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

h1 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 24px;
}

.muted {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

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

label {
  display: grid;
  gap: 6px;
  color: #334155;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  text-transform: none;
}

button,
.button {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.alert {
  margin-bottom: 14px;
  padding: 10px 12px;
  border: 1px solid #fecdca;
  border-radius: 8px;
  background: #fef3f2;
  color: var(--danger);
  font-size: 14px;
}