:root {
  --ink: #0a1620;
  --deep: #10242f;
  --deep-2: #17323f;
  --parch: #ecdcb8;
  --parch-2: #dcc594;
  --parch-ink: #2a1c0c;
  --gold: #e8ad2e;
  --gold-2: #f6d27a;
  --coral: #e2533a;
  --coral-2: #b93a25;
  --teal: #46b9a6;
  --foam: #f3e9d2;
  --muted: #9fb0b5;
  --display: "Pirata One", "Alfa Slab One", Georgia, serif;
  --slab: "Alfa Slab One", Georgia, serif;
  --body: "Alegreya Sans", "Trebuchet MS", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.55;
  color: var(--foam);
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 500px at 85% -5%, rgba(232, 173, 46, .16), transparent 60%),
    radial-gradient(700px 600px at -10% 30%, rgba(70, 185, 166, .12), transparent 60%),
    repeating-linear-gradient(0deg, rgba(243, 233, 210, .035) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(243, 233, 210, .035) 0 1px, transparent 1px 64px);
  background-attachment: fixed, fixed, scroll, scroll;
  overflow-x: hidden;
}

a { color: var(--gold-2); text-underline-offset: 3px; }
a:hover { color: #fff; }

:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; border-radius: 4px; }

/* ---------- masthead ---------- */

.mast {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 1120px; margin: 0 auto; padding: 18px 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-size: 26px; letter-spacing: .5px;
  color: var(--gold); text-decoration: none;
}
.brand svg { width: 28px; height: 28px; }
.mast nav { display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }
.mast nav a {
  color: var(--foam); text-decoration: none; font-weight: 500; font-size: 16px;
  border-bottom: 2px dotted rgba(243, 233, 210, .3); padding-bottom: 2px;
}
.mast nav a:hover { color: var(--gold-2); border-bottom-color: var(--gold); }

/* ---------- hero ---------- */

main { max-width: 1120px; margin: 0 auto; padding: 0 20px 40px; }

.hero { position: relative; padding: 34px 0 30px; max-width: 860px; }
.hero h1 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(42px, 7.4vw, 86px); line-height: .98; letter-spacing: .5px;
  margin: 0 0 18px; color: var(--foam);
  text-shadow: 0 3px 0 rgba(0, 0, 0, .35);
  animation: rise .7s cubic-bezier(.2, .8, .2, 1) both;
}
.hero h1 span { color: var(--gold); display: block; }
.lede {
  font-size: clamp(18px, 2.1vw, 21px); max-width: 640px; margin: 0; color: #d9d0bb;
  animation: rise .7s .12s cubic-bezier(.2, .8, .2, 1) both;
}
.lede strong { color: var(--gold-2); font-weight: 700; }

.stamp {
  position: absolute; right: -150px; top: 38px; margin: 0;
  width: 150px; height: 150px; border-radius: 50%;
  display: grid; place-content: center; text-align: center;
  font-family: var(--slab); font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; line-height: 1.5;
  color: var(--coral); border: 3px double var(--coral);
  transform: rotate(12deg);
  animation: stampIn .5s .5s cubic-bezier(.3, 1.6, .5, 1) both;
}
.stamp b { font-size: 19px; letter-spacing: .5px; display: block; }

@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes stampIn { from { opacity: 0; transform: rotate(12deg) scale(1.7); } to { opacity: 1; transform: rotate(12deg) scale(1); } }

/* ---------- the tool ---------- */

.deck {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 22px;
  align-items: start;
  animation: rise .7s .25s cubic-bezier(.2, .8, .2, 1) both;
}

.log, .readout { border-radius: 14px; padding: 26px 26px 22px; position: relative; }

.log h2, .readout h2 {
  font-family: var(--display); font-weight: 400; font-size: 30px; letter-spacing: .5px; margin: 0 0 14px;
}

/* parchment side */
.log {
  color: var(--parch-ink);
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(255, 255, 255, .35), transparent 55%),
    radial-gradient(90% 70% at 100% 100%, rgba(122, 84, 30, .28), transparent 60%),
    var(--parch);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(90, 60, 20, .25);
}
.log::after {
  content: ""; position: absolute; inset: 9px; border: 2px dashed rgba(90, 60, 20, .32);
  border-radius: 8px; pointer-events: none;
}
.log > * { position: relative; z-index: 1; }

.mode { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; background: rgba(90, 60, 20, .16); padding: 5px; border-radius: 10px; }
.mode button {
  font: 700 16px/1.2 var(--body); padding: 11px 8px; border: 0; border-radius: 7px; cursor: pointer;
  background: transparent; color: #5a4020;
}
.mode button em { font-style: normal; font-family: var(--slab); font-size: 13px; color: var(--coral-2); margin-left: 3px; }
.mode button[aria-checked="true"] { background: var(--parch-ink); color: var(--gold-2); box-shadow: 0 2px 0 rgba(0, 0, 0, .25); }
.mode button[aria-checked="true"] em { color: var(--gold); }

.count { text-align: center; margin: 18px 0 6px; }
.count output {
  display: block; font-family: var(--slab); font-size: clamp(58px, 10vw, 104px); line-height: 1;
  color: var(--parch-ink); font-variant-numeric: tabular-nums; letter-spacing: -1px;
}
.count output.bump { animation: bump .22s ease-out; }
.count span { font-weight: 700; text-transform: uppercase; letter-spacing: 3px; font-size: 13px; color: #6d4f24; }
@keyframes bump { 0% { transform: scale(1); } 40% { transform: scale(1.09) rotate(-1.5deg); } 100% { transform: scale(1); } }

.chest {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  width: 100%; margin: 14px 0 10px; padding: 16px 18px;
  font-family: var(--slab); font-size: 28px; letter-spacing: 1px; text-transform: uppercase;
  color: #fff7e6; background: linear-gradient(180deg, #ee6a4f, var(--coral) 55%, var(--coral-2));
  border: 0; border-radius: 12px; cursor: pointer;
  box-shadow: 0 7px 0 #7c2414, 0 14px 22px rgba(124, 36, 20, .4);
  transition: transform .06s ease, box-shadow .06s ease;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none;
}
.chest svg { width: 48px; height: 48px; filter: drop-shadow(0 2px 0 rgba(0, 0, 0, .3)); }
.chest:hover { filter: brightness(1.06); }
.chest:active, .chest.down { transform: translateY(6px); box-shadow: 0 1px 0 #7c2414, 0 4px 8px rgba(124, 36, 20, .4); }
.chest b { font-weight: 400; }

.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.quick button, .ghost, .share {
  font: 700 16px/1 var(--body); padding: 11px 6px; border-radius: 8px; cursor: pointer;
  touch-action: manipulation;
}
.quick button { background: rgba(90, 60, 20, .12); color: var(--parch-ink); border: 1.5px solid rgba(90, 60, 20, .45); }
.quick button:hover { background: rgba(90, 60, 20, .24); }

.hint { font-size: 15px; color: #6d4f24; margin: 12px 0 0; }
kbd {
  font: 700 13px/1 var(--body); padding: 3px 7px; border-radius: 5px;
  background: var(--parch-ink); color: var(--parch); box-shadow: 0 2px 0 rgba(0, 0, 0, .3);
}

.ledger {
  display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; align-items: end;
  margin-top: 16px; padding-top: 16px; border-top: 2px dashed rgba(90, 60, 20, .32);
}
.ledger label, .pace, .settings label { font-weight: 700; font-size: 14px; letter-spacing: .3px; }
.ledger label { display: grid; gap: 5px; color: #5a4020; }

input[type="number"], select {
  font: 700 18px/1.2 var(--body); font-variant-numeric: tabular-nums;
  width: 100%; padding: 9px 10px; border-radius: 7px;
}
.log input[type="number"] { background: rgba(255, 255, 255, .5); border: 1.5px solid rgba(90, 60, 20, .5); color: var(--parch-ink); }

.ghost { background: transparent; }
.log .ghost { color: var(--coral-2); border: 1.5px solid rgba(185, 58, 37, .55); padding: 12px 12px; }
.log .ghost:hover { background: rgba(185, 58, 37, .12); }

.fine { font-size: 14px; margin: 10px 0 0; color: #6d4f24; min-height: 1em; }

/* dark readout side */
.readout {
  background: linear-gradient(170deg, var(--deep-2), var(--deep) 60%);
  border: 1px solid rgba(232, 173, 46, .35);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.readout h2 { color: var(--gold); }
.big { margin: 0; line-height: 1; }
.big output {
  font-family: var(--slab); font-size: clamp(52px, 8.6vw, 92px); color: var(--gold-2);
  font-variant-numeric: tabular-nums; letter-spacing: -1px;
  text-shadow: 0 0 34px rgba(232, 173, 46, .35);
}
.big-cap { margin: 6px 0 20px; color: var(--muted); font-size: 16px; }

.meter {
  position: relative; height: 16px; border-radius: 10px; margin: 0 0 34px;
  background: rgba(0, 0, 0, .4); box-shadow: inset 0 1px 3px rgba(0, 0, 0, .6);
}
.meter .fill {
  height: 100%; width: 0; min-width: 0; border-radius: 10px;
  background: linear-gradient(90deg, var(--teal), var(--gold) 60%, var(--coral));
  background-size: 400px 100%;
  transition: width .35s cubic-bezier(.2, .8, .2, 1);
}
.meter i {
  position: absolute; top: 100%; transform: translateX(-50%); padding-top: 9px;
  font-style: normal; font-size: 12px; font-weight: 700; color: var(--muted);
}
.meter i::before { content: ""; position: absolute; left: 50%; top: -16px; height: 22px; width: 1px; background: rgba(243, 233, 210, .3); }

.stats { margin: 0 0 18px; display: grid; gap: 0; }
.stats div {
  display: flex; justify-content: space-between; align-items: baseline; gap: 14px;
  padding: 10px 0; border-bottom: 1px dotted rgba(243, 233, 210, .22);
}
.stats dt { color: #c5cfd0; font-size: 16px; }
.stats dd { margin: 0; font-family: var(--slab); font-size: 19px; color: var(--foam); text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.pace { display: flex; align-items: center; gap: 10px; color: #c5cfd0; flex-wrap: wrap; }
.pace input { width: 92px; }
.readout input[type="number"], .readout select {
  background: rgba(0, 0, 0, .35); border: 1.5px solid rgba(232, 173, 46, .4); color: var(--foam);
}

.share {
  width: 100%; margin-top: 18px; padding: 14px; font-size: 17px;
  background: var(--gold); color: #2a1c0c; border: 0; box-shadow: 0 4px 0 #94690f;
}
.share:hover { background: var(--gold-2); }
.share:active { transform: translateY(3px); box-shadow: 0 1px 0 #94690f; }
.readout .fine { color: var(--teal); }

.settings { margin-top: 12px; border-top: 1px dotted rgba(243, 233, 210, .22); padding-top: 12px; }
.settings summary { cursor: pointer; font-weight: 700; color: var(--gold-2); }
.settings label { display: grid; gap: 5px; margin-top: 12px; color: #c5cfd0; }
.readout .ghost { margin-top: 12px; color: var(--foam); border: 1.5px solid rgba(243, 233, 210, .4); padding: 11px 14px; }
.readout .ghost:hover { background: rgba(243, 233, 210, .1); }

/* ---------- content sheets ---------- */

.sheet { margin-top: 56px; max-width: 860px; }
.sheet.two { max-width: none; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; }
.sheet h2 {
  font-family: var(--display); font-weight: 400; font-size: clamp(30px, 4.4vw, 44px); line-height: 1.05;
  margin: 0 0 14px; color: var(--gold);
}
.sheet h3 { font-family: var(--slab); font-weight: 400; font-size: 19px; letter-spacing: .3px; margin: 22px 0 6px; color: var(--foam); }
.sheet.two h3:first-child { margin-top: 6px; }
.sheet p { margin: 0 0 14px; color: #d9d0bb; }
.sheet strong { color: var(--gold-2); }
.note { font-size: 16px; color: var(--muted) !important; border-left: 3px solid var(--teal); padding-left: 12px; }

.chart { display: block; width: 100%; height: auto; margin: 0 0 14px; border-radius: 12px; border: 1px solid rgba(232, 173, 46, .3); }

.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; display: grid; gap: 12px; }
.steps li {
  counter-increment: step; position: relative; padding: 2px 0 2px 54px; color: #d9d0bb; min-height: 40px;
}
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0; width: 38px; height: 38px;
  display: grid; place-content: center; border-radius: 50%;
  font-family: var(--slab); font-size: 17px; color: var(--ink); background: var(--gold);
}
.steps b { color: var(--foam); }

.formula {
  font-family: var(--slab); font-size: clamp(17px, 2.4vw, 22px); color: var(--gold-2) !important;
  background: rgba(0, 0, 0, .3); border: 1px dashed rgba(232, 173, 46, .45); border-radius: 10px;
  padding: 16px 18px; text-align: center;
}
var { font-family: Georgia, serif; font-style: italic; }

.tablewrap { overflow-x: auto; border-radius: 12px; border: 1px solid rgba(232, 173, 46, .3); margin-bottom: 14px; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
thead th { font: 700 14px/1.2 var(--body); text-transform: uppercase; letter-spacing: 1.5px; color: var(--gold); background: rgba(0, 0, 0, .35); }
th, td { padding: 12px 16px; text-align: right; white-space: nowrap; }
th:first-child { text-align: left; }
tbody th { font-family: var(--slab); font-weight: 400; color: var(--foam); }
tbody td { color: #d9d0bb; font-weight: 500; }
tbody tr:nth-child(odd) { background: rgba(243, 233, 210, .04); }
tbody tr:hover { background: rgba(232, 173, 46, .1); }

.facts { list-style: none; padding: 0; margin: 0 0 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.facts li {
  background: rgba(16, 36, 47, .75); border: 1px solid rgba(243, 233, 210, .14); border-radius: 12px;
  padding: 14px 16px; color: #d9d0bb; font-size: 17px;
}
.facts b { display: block; font-family: var(--slab); font-weight: 400; font-size: 15px; letter-spacing: .5px; text-transform: uppercase; color: var(--teal); margin-bottom: 4px; }

#faq details { border-bottom: 1px dotted rgba(243, 233, 210, .25); padding: 14px 0; }
#faq summary {
  cursor: pointer; font-weight: 700; font-size: 20px; color: var(--foam); list-style: none;
  display: flex; justify-content: space-between; gap: 14px; align-items: baseline;
}
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after { content: "+"; font-family: var(--slab); color: var(--gold); font-size: 22px; flex: none; }
#faq details[open] summary::after { content: "\2212"; }
#faq details p { margin: 10px 0 0; }

footer {
  max-width: 1120px; margin: 50px auto 0; padding: 26px 20px 40px;
  border-top: 2px dashed rgba(243, 233, 210, .2); color: var(--muted); font-size: 15px;
}
footer p { margin: 0 0 8px; }
footer b { color: var(--foam); }

/* plain text pages */
.plain { max-width: 720px; padding-top: 20px; }
.plain h1 { font-family: var(--display); font-weight: 400; font-size: clamp(38px, 6vw, 60px); color: var(--gold); margin: 10px 0 18px; line-height: 1; }
.plain h2 { font-family: var(--slab); font-weight: 400; font-size: 20px; margin: 26px 0 8px; }
.plain p, .plain li { color: #d9d0bb; }

/* ---------- responsive ---------- */

@media (max-width: 1340px) {
  .stamp { right: 0; top: auto; bottom: -34px; width: 124px; height: 124px; font-size: 10px; }
  .stamp b { font-size: 16px; }
  .hero { padding-bottom: 46px; }
  .lede { max-width: 560px; padding-right: 0; }
}
@media (max-width: 900px) {
  .deck { grid-template-columns: 1fr; }
  .sheet.two { grid-template-columns: 1fr; gap: 6px; }
  .stamp { display: none; }
  .hero { padding-bottom: 26px; }
}
@media (max-width: 600px) {
  body { font-size: 17px; }
  .mast { padding: 14px 16px; }
  .mast nav { display: none; }
  main { padding: 0 16px 30px; }
  .log, .readout { padding: 20px 18px 18px; }
  .ledger { grid-template-columns: 1fr 1fr; }
  .ledger .ghost { grid-column: 1 / -1; }
  .facts { grid-template-columns: 1fr; }
  th, td { padding: 10px 12px; }
  .stats dt { font-size: 15px; }
  .stats dd { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}