/* Engineer's computation pad: pale green ruled paper, a red margin rule,
   pencil-grey margin notes. The one loud thing is the linter's rubber stamp. */
:root {
  --paper: #f2f5ec;
  --grid: #dfe7d8;
  --ink: #1c2822;
  --pencil: #5b6a61;
  --rule: #c2412f;
  --pass: #2e6a3a;
  --field: #fdfefb;
  --serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: 16px;
}
* { box-sizing: border-box; }
html { background: #e3e9dc; color: var(--ink); }
body {
  margin: 0;
  font: 17px/1.5 var(--serif);
  -webkit-text-size-adjust: 100%;
}

.sheet {
  max-width: 1060px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 28px var(--gutter) 48px calc(var(--gutter) + 14px);
  background:
    linear-gradient(to right, transparent 9px, var(--rule) 9px, var(--rule) 10px, transparent 10px) no-repeat,
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 100% 24px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 24px 100%,
    var(--paper);
  background-size: 100% 100%, 24px 24px, 24px 24px, auto;
  box-shadow: 0 1px 0 #c9d3c1, 0 10px 30px -18px rgba(28, 40, 34, .35);
}

/* ---- masthead ---- */
.masthead { margin-bottom: 28px; max-width: 46rem; }
.eyebrow, .label, .req, .tally, .spend span, .help .ex span, .assumed span, .title-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.eyebrow { color: var(--pencil); margin: 0 0 6px; }
h1 { font-size: 40px; line-height: 1.05; margin: 0 0 12px; font-weight: 700; letter-spacing: -.01em; }
.lede { margin: 0; font-size: 18px; }

/* ---- blocks ---- */
.block { padding: 20px 0 22px; border-top: 1.5px solid var(--ink); }
.block + .block, #slots .block { border-top-width: 1px; border-top-color: #a9b8a6; }
#slots .slot:first-child, .result { border-top: 1.5px solid var(--ink); }
.label { display: block; color: var(--ink); font-weight: 700; margin: 0 0 8px; font-size: 13px; }
.slot-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.req { color: var(--pencil); font-size: 11px; }

.row { display: grid; grid-template-columns: 1fr; gap: 10px; }
.help { color: var(--pencil); font-size: 15px; line-height: 1.45; }
.help p { margin: 0 0 8px; }
.help b { color: var(--ink); }
.help .ex { font-style: italic; }
.help .ex span { font-style: normal; margin-right: 4px; font-size: 11px; }
.help code { font-family: var(--mono); font-size: 13px; }
/* On phones the note reads first, then the field, like instructions above a box. */
@media (max-width: 799px) { .row .help { order: -1; } }
@media (min-width: 800px) {
  .row { grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; }
  .help { padding-top: 4px; border-left: 1px dashed #a9b8a6; padding-left: 16px; }
}

/* ---- inputs ---- */
textarea, input[type=text], input[type=password] {
  width: 100%;
  font: 16px/1.5 var(--serif);
  color: var(--ink);
  background: var(--field);
  border: 1px solid #9fb09b;
  border-radius: 2px;
  padding: 10px 12px;
}
textarea { resize: vertical; min-height: 6.5em; }
#idea { min-height: 4.5em; font-size: 17px; }
textarea:focus, input:focus, button:focus-visible, .output:focus {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}
.modes { border: 0; padding: 0; margin: 0 0 14px; display: flex; gap: 22px; }
.modes label { display: flex; align-items: center; gap: 6px; font-size: 17px; cursor: pointer; }
.modes input { accent-color: var(--ink); width: 18px; height: 18px; margin: 0; }
.title-label { display: block; color: var(--pencil); margin-bottom: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

button {
  font: 600 15px/1 var(--serif);
  padding: 11px 16px;
  min-height: 44px;
  border: 1.5px solid var(--ink);
  background: var(--field);
  color: var(--ink);
  border-radius: 2px;
  cursor: pointer;
}
button.primary { background: var(--ink); color: var(--paper); }
button:disabled { opacity: .55; cursor: progress; }
.draft-bar, .actions, .unlock-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 10px; }
.unlock { margin-top: 12px; padding: 12px; border: 1px dashed var(--ink); background: rgba(253, 254, 251, .7); }
.unlock label { display: block; font-size: 15px; margin-bottom: 4px; }
.unlock-row input { flex: 1 1 180px; width: auto; }
.status { font-size: 15px; color: var(--pencil); }
.status.bad { color: var(--rule); }
.spend { margin: 12px 0 0; font-family: var(--mono); font-size: 13px; color: var(--ink); line-height: 1.6; }
.spend span { color: var(--pencil); margin-right: 6px; }

/* ---- assumptions ---- */
.assumed { list-style: none; margin: 8px 0 0; padding: 0; }
.assumed li { font-size: 15px; padding: 6px 0 6px 10px; border-left: 3px solid #d7a23a; background: rgba(215, 162, 58, .1); margin-bottom: 4px; }
.assumed span { color: #8a5d0c; font-size: 11px; margin-right: 6px; }

/* ---- verdict: the rubber stamp ---- */
.verdict { display: flex; align-items: center; gap: 14px; min-height: 64px; margin-bottom: 8px; flex-wrap: wrap; }
.stamp {
  display: inline-block;
  font: 800 26px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 8px 14px 7px;
  border: 3px double currentColor;
  border-radius: 4px;
  transform: rotate(-4deg);
}
.verdict.pass .stamp { color: var(--pass); }
.verdict.fail .stamp { color: var(--rule); }
.verdict.small .stamp { font-size: 18px; }
.tally { color: var(--pencil); }
.problems { list-style: none; margin: 0 0 12px; padding: 0; font-size: 15px; }
.problems li { padding: 5px 0; border-bottom: 1px dotted #a9b8a6; overflow-wrap: anywhere; }
.problems b { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-right: 4px; }
.problems .error b { color: var(--rule); }
.problems .warn b { color: #8a5d0c; }
.output {
  margin: 0;
  max-height: 26em;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 13px/1.55 var(--mono);
  background: var(--field);
  border: 1px solid #9fb09b;
  padding: 12px;
}
.foot { margin-top: 28px; color: var(--pencil); font-size: 14px; }

@media (max-width: 420px) {
  h1 { font-size: 32px; }
  .stamp { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }