:root {
  --mw-bg: #f5f7fa;
  --mw-surface: #ffffff;
  --mw-text: #1c2733;
  --mw-muted: #5b6b7b;
  --mw-accent: #0a6cb0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  background: var(--mw-bg);
  color: var(--mw-text);
}

.shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

h1 {
  color: var(--mw-accent);
  margin-top: 0;
}

.check, .muted {
  color: var(--mw-muted);
}

.card {
  background: var(--mw-surface);
  border: 1px solid #dbe2ea;
  border-radius: 8px;
  padding: 1.25rem;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}

input {
  padding: 0.55rem 0.6rem;
  border: 1px solid #c2ccd6;
  border-radius: 6px;
  font-size: 1rem;
}

button {
  padding: 0.55rem 1rem;
  background: var(--mw-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover { background: #095a92; }

.error {
  color: #b00020;
  font-weight: 600;
}