/* Frank's Bullshit Calculator - one-page site. No fonts or scripts to load: it's quick on a poor phone signal. */
:root {
  --ink: #1f2a44;
  --ink-soft: #4a5468;
  --paper: #fbf8f1;
  --rule: #d9d2c0;
  --line: #c8d6ea;
  --red: #b3261e;
  --yellow: #fff4b8;
  --button: #b3261e;
  --button-hover: #8f1d17;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.55 var(--sans);
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 16px 8px;
}

/* Hero: headline, sub-headline and the form all fit on a phone screen */
.kicker {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--red);
}

h1 {
  margin: 0 0 14px;
  font: 700 clamp(30px, 8vw, 44px)/1.12 var(--serif);
  letter-spacing: -.01em;
}

h1 span { display: block; color: var(--red); }

.sub { margin: 0 0 22px; color: var(--ink-soft); }

.signup {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 10px;
  padding: 16px;
  box-shadow: 4px 4px 0 var(--ink);
}

.label { display: block; font-weight: 700; margin-bottom: 8px; }

.row { display: flex; flex-direction: column; gap: 10px; }

input[type="email"] {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  font: 18px var(--sans);
  color: var(--ink);
  background: var(--yellow);
  border: 2px solid var(--ink);
  border-radius: 8px;
}

input[type="email"]:focus { outline: 3px solid var(--red); outline-offset: 2px; }

button, .button-link {
  display: inline-block;
  min-height: 52px;
  padding: 12px 18px;
  font: 700 18px var(--sans);
  color: #fff;
  background: var(--button);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

button:hover, .button-link:hover { background: var(--button-hover); }
button:focus-visible, .button-link:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }

.small { margin: 10px 0 0; font-size: 14px; color: var(--ink-soft); }

@media (min-width: 560px) {
  .row { flex-direction: row; }
  .row input { flex: 1; }
  .row button { flex: none; }
}

/* The example result, drawn like a page from an old ledger */
.ledger {
  position: relative;
  margin: 40px 0 0;
  padding: 18px 16px 14px;
  background: #fff;
  border: 1px solid var(--rule);
  border-left: 4px double var(--red);
  border-radius: 4px;
}

h2 { margin: 0 0 12px; font: 700 22px/1.25 var(--serif); }

.ledger dl { margin: 0; }
.ledger dl div { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.ledger dt { color: var(--ink-soft); }
.ledger dd { margin: 0; font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }
.ledger .total { border-top: 2px solid var(--ink); margin-top: 4px; }
.ledger .total dt, .ledger .total dd { color: var(--ink); font-size: 20px; }
.ledger .total dd { color: var(--red); }

.stamp {
  position: absolute;
  top: 10px;
  right: 12px;
  margin: 0;
  padding: 2px 10px;
  font: 700 18px var(--serif);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--red);
  border: 3px solid var(--red);
  border-radius: 6px;
  transform: rotate(-8deg);
  opacity: .85;
}

.caption { margin: 10px 0 0; font-size: 14px; color: var(--ink-soft); }

.points { margin-top: 36px; }
.points ul { margin: 0; padding-left: 20px; }
.points li { margin-bottom: 10px; }

.again {
  margin: 36px 0 0;
  padding: 22px 16px;
  text-align: center;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
}

.again p { margin: 0 0 14px; font: 700 20px/1.3 var(--serif); }

.foot {
  max-width: 640px;
  margin: 32px auto 0;
  padding: 18px 16px 32px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink-soft);
}

.foot a { color: var(--ink); }

/* Plain pages: thanks and privacy */
.plain h1 { font-size: clamp(28px, 7vw, 38px); }
.plain p, .plain li { color: var(--ink); }