:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #16181d;
  --muted: #626a76;
  --accent: #2f6df6;
  --accent-text: #ffffff;
  --focus: #9ab8ff;
  --danger-bg: #fdf1f1;
  --danger-border: #e9c3c3;
  --danger-text: #8c2b2b;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 18, 23, 0.06), 0 8px 24px rgba(16, 18, 23, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101216;
    --surface: #181b21;
    --border: #2a2f39;
    --text: #e9ecf1;
    --muted: #9aa3b1;
    --accent: #5b8cff;
    --accent-text: #0d1016;
    --focus: #3a5fb0;
    --danger-bg: #2b1a1c;
    --danger-border: #5c3033;
    --danger-text: #f2b5b5;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.shell {
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 56px 20px 32px;
  max-width: 460px;
}

.masthead {
  text-align: center;
}

.wordmark {
  display: inline-block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.wordmark-table {
  color: var(--text);
}

.wordmark-pop {
  color: var(--accent);
}

.tagline {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.content {
  flex: 1;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 26px;
}

.card-title {
  margin: 0 0 6px;
  font-size: 21px;
  letter-spacing: -0.01em;
}

.card-subtitle {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 14px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 15px;
}

.input:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 1px;
}

.button {
  margin-top: 8px;
  padding: 11px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.button:hover {
  filter: brightness(1.05);
}

.code-input {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 22px;
  letter-spacing: 6px;
  text-align: center;
}

.alert {
  margin: 0 0 16px;
  padding: 10px 12px;
  border: 1px solid var(--danger-border);
  border-radius: 8px;
  background: var(--danger-bg);
  color: var(--danger-text);
  font-size: 13.5px;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-inline {
  margin-top: 14px;
  text-align: center;
}

.linkbutton {
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  font-size: 13.5px;
  cursor: pointer;
  text-decoration: underline;
}

.facts {
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.fact dt,
.fact dd {
  margin: 0;
}

.fact-value {
  font-size: 15px;
  font-weight: 600;
}

.fineprint {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

.footer {
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}

@media (max-width: 520px) {
  .shell {
    padding: 32px 16px 24px;
  }
}