:root {
  --ink: #1b1b1b;
  --paper: #fafaf8;
  --line: #dcdcd6;
  --accent: #1437e6;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

a {
  color: inherit;
}

.btn {
  font: inherit;
  font-size: 13px;
  padding: 6px 12px;
  border: 1px solid transparent;
  background: #f0f0ec;
  color: var(--ink);
  border-radius: 0;
  cursor: pointer;
}

.btn:hover {
  background: #e7e7e1;
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #0f2ac2;
}

.btn-large {
  font-size: 16px;
  padding: 12px 24px;
}