:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #18212f;
  background: #f2f5f8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.site-header {
  align-items: center;
  background: #10243e;
  color: #fff;
  display: flex;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 2rem;
}

.brand,
.link-button {
  color: inherit;
  font: inherit;
  text-decoration: none;
}

.brand {
  font-weight: 700;
}

.session {
  align-items: center;
  display: flex;
  gap: 1rem;
}

.session form {
  margin: 0;
}

.link-button {
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

.page {
  display: grid;
  gap: 1rem;
  margin: 2rem auto;
  max-width: 960px;
  padding: 0 1rem;
}

.card {
  background: #fff;
  border: 1px solid #d9e1e8;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgb(16 36 62 / 6%);
  padding: 1.5rem;
}

.narrow {
  margin: 5rem auto;
  max-width: 420px;
  width: 100%;
}

.eyebrow {
  color: #49647f;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

input {
  border: 1px solid #a9b8c6;
  border-radius: 6px;
  font: inherit;
  padding: 0.7rem;
  width: 100%;
}

button[type="submit"]:not(.link-button) {
  background: #1261a0;
  border: 0;
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 0.7rem 1rem;
}

.error {
  color: #a12020;
}