:root {
  --bg: #f5f2ea;
  --paper: #fffdf8;
  --ink: #1d2421;
  --muted: #59625d;
  --rule: #d8d1c2;
  --accent: #1d5a55;
  --accent-ink: #ffffff;
  --mark: #e9e1cf;
  --bad: #9b2c1f;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121715;
    --paper: #18201d;
    --ink: #e6e3da;
    --muted: #a0a9a3;
    --rule: #2e3834;
    --accent: #79bdb3;
    --accent-ink: #0e1a18;
    --mark: #22302b;
    --bad: #f08f7f;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: 44rem; margin: 0 auto; padding: 0 16px; }

header.site { border-bottom: 1px solid var(--rule); }
header.site .wrap { display: flex; align-items: center; gap: 10px; padding-top: 14px; padding-bottom: 14px; }
header.site a { color: var(--ink); text-decoration: none; font-family: var(--serif); font-size: 19px; }
header.site svg { width: 26px; height: 26px; flex: none; }

main { padding: 28px 0 48px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; }
h1 { font-size: 34px; margin: 8px 0 14px; letter-spacing: -0.01em; }
h2 { font-size: 24px; margin: 40px 0 10px; padding-top: 18px; border-top: 1px solid var(--rule); }
h3 { font-size: 19px; margin: 26px 0 6px; }
p, ul, ol { margin: 0 0 14px; }
li { margin-bottom: 6px; }
.lede { font-size: 19px; }
.small, .fine { font-size: 14.5px; color: var(--muted); }

.table-scroll { overflow-x: auto; margin: 0 0 16px; border: 1px solid var(--rule); background: var(--paper); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; background: var(--mark); }
tr:last-child td { border-bottom: 0; }
td.num { white-space: nowrap; }

.sum { background: var(--paper); border-left: 3px solid var(--accent); padding: 12px 16px; margin: 0 0 16px; }
.sum p:last-child { margin-bottom: 0; }
.sum code, .working { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 15px; }

/* the one-booking calculator */
.calc { background: var(--paper); border: 1px solid var(--rule); padding: 16px; margin: 0 0 16px; }
.calc .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
.calc label { display: block; font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.calc input, .calc select {
  width: 100%; font: inherit; font-size: 16px; padding: 9px 10px; min-height: 44px;
  border: 1px solid var(--rule); background: var(--bg); color: var(--ink); border-radius: 3px;
}
.calc .check { display: flex; gap: 8px; align-items: center; font-weight: 400; min-height: 44px; }
.calc .check input { width: 20px; height: 20px; min-height: 0; }
.calc output { display: block; margin-top: 14px; font-size: 18px; }
.calc output strong { font-size: 24px; font-family: var(--serif); }
.calc .working { color: var(--muted); display: block; margin-top: 4px; white-space: pre-wrap; }
@media (max-width: 560px) { .calc .grid { grid-template-columns: 1fr; } }

.building { margin-top: 44px; background: var(--paper); border: 1px solid var(--rule); padding: 4px 20px 18px; }
.building h2 { border-top: 0; padding-top: 0; margin-top: 18px; }
.status { display: inline-block; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--rule); padding: 2px 8px; border-radius: 2px; }

form.signup { margin-top: 18px; }
form.signup label[for="email"] { display: block; font-weight: 600; margin-bottom: 6px; }
form.signup .row { display: flex; gap: 8px; flex-wrap: wrap; }
form.signup input[type="email"] {
  flex: 1 1 15rem; min-width: 0; font: inherit; font-size: 16px; padding: 10px 12px; min-height: 46px;
  border: 1px solid var(--rule); background: var(--bg); color: var(--ink); border-radius: 3px;
}
form.signup button {
  flex: 0 0 auto; font: inherit; font-weight: 600; padding: 10px 18px; min-height: 46px; cursor: pointer;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 3px;
}
form.signup button:disabled { opacity: 0.6; cursor: default; }
form.signup.done .row, form.signup.done label[for="email"] { display: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { margin: 10px 0 0; font-weight: 600; min-height: 1.6em; }
.msg.bad { color: var(--bad); }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

footer.site { border-top: 1px solid var(--rule); padding: 20px 0 36px; font-size: 14.5px; color: var(--muted); }
footer.site p { margin-bottom: 8px; }

@media (max-width: 560px) {
  body { font-size: 16.5px; }
  h1 { font-size: 28px; }
  h2 { font-size: 21px; }
  form.signup button { width: 100%; }
}