/* PuppyGauge: the exam room and the hallway at home.
   Tokens per BRIEF steal sheet. */
:root {
  --paper: oklch(97.2% 0.008 95);
  --paper-deep: oklch(94.5% 0.012 95);
  --ink: oklch(26% 0.015 270);
  --graphite: oklch(46% 0.01 270);
  --chartline: oklch(88% 0.015 250);
  --stamp: oklch(56% 0.095 165);
  --stamp-deep: oklch(46% 0.10 168);
  --amber: oklch(74% 0.12 70);
  --band: oklch(93% 0.03 165);
  --card: oklch(99% 0.005 95);
  --line: oklch(89% 0.012 95);
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px;
  --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px; --s10: 128px; --s11: 160px;
  --t-display: clamp(2.75rem, 7vw + 0.5rem, 6.5rem);
  --t-h1: clamp(2.25rem, 4.5vw + 1rem, 4rem);
  --t-h2: clamp(1.5rem, 2.6vw + 0.6rem, 2.4rem);
  --t-h3: clamp(1.15rem, 1.2vw + 0.8rem, 1.45rem);
  --t-body: clamp(1rem, 0.4vw + 0.85rem, 1.125rem);
  --t-label: clamp(0.7rem, 0.3vw + 0.55rem, 0.8rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-micro: 140ms; --dur-std: 260ms; --dur-exp: 520ms;
  --font-sans: "neue-haas-grotesk-display", "neue-haas-grotesk-text",
               "Helvetica Neue", Arial, sans-serif;
  --font-text: "neue-haas-grotesk-text", "Helvetica Neue", Arial, sans-serif;
  --font-pencil: "Shantell Sans", "Caveat", "Comic Sans MS", cursive;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-text); font-size: var(--t-body); line-height: 1.6;
  -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--stamp-deep); }
.wrap { max-width: 1220px; margin: 0 auto; padding: 0 clamp(18px, 4vw, 40px); }

/* shelf-edge nav */
.shelf { position: sticky; top: 0; z-index: 40;
  background: color-mix(in oklab, var(--paper) 88%, white);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); }
.shelf-in { display: flex; align-items: center; justify-content: space-between;
  height: 60px; }
.wordmark { font-family: var(--font-sans); font-weight: 700;
  letter-spacing: -0.02em; font-size: 1.25rem; color: var(--ink);
  text-decoration: none; }
.wordmark em { font-style: normal; color: var(--stamp); }
.shelf nav { display: flex; gap: var(--s5); }
.shelf nav a { font-size: 0.9rem; color: var(--graphite);
  text-decoration: none; }
.shelf nav a:hover { color: var(--stamp-deep); }

/* pencil margin notes (section labels) */
.pencil { font-family: var(--font-pencil); color: var(--graphite);
  font-size: clamp(1rem, 1vw + 0.8rem, 1.3rem); transform: rotate(-1.6deg);
  display: inline-block; margin-bottom: var(--s2); }
.pencil.green { color: var(--stamp-deep); }

/* ============ S1 the scale ============ */
.scale { padding: var(--s8) 0 var(--s9); position: relative; overflow: hidden; }
.scale-grid { display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(24px, 4vw, 64px); align-items: center; }
.scale h1 { font-family: var(--font-sans); font-weight: 700;
  font-size: var(--t-display); line-height: 1.02; letter-spacing: -0.028em;
  margin: 0 0 var(--s3); }
.scale h1 em { font-style: normal; color: var(--stamp); }
.scale .sub { font-size: clamp(1.05rem, 0.6vw + 0.9rem, 1.3rem);
  color: var(--graphite); max-width: 34rem; margin: 0 0 var(--s6); }
.scale-photo { position: relative; }
.scale-photo img { border-radius: 14px; box-shadow:
  0 2px 6px rgb(35 36 43 / 0.06), 0 18px 44px rgb(35 36 43 / 0.12); }
.scale-photo .tag { position: absolute; left: -10px; bottom: 22px;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px 14px; font-family: var(--font-pencil);
  transform: rotate(-2deg); box-shadow: 0 8px 20px rgb(35 36 43 / 0.10); }

/* readout panel: the scale's own display */
.readout { background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: clamp(18px, 2.5vw, 30px);
  box-shadow: 0 1px 3px rgb(35 36 43 / 0.05), 0 14px 34px rgb(35 36 43 / 0.09); }
.readout .row { margin-bottom: var(--s4); }
.readout label { display: block; font-family: var(--font-sans);
  font-size: var(--t-label); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--graphite); margin-bottom: var(--s1); }
.readout input[type=text], .readout input[type=number], .readout select {
  width: 100%; font: inherit; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.readout input:focus, .readout select:focus { outline: 2px solid var(--stamp);
  outline-offset: 1px; border-color: var(--stamp); }
.readout .duo { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3); }
.unit-flip { display: inline-flex; border: 1px solid var(--line);
  border-radius: 8px; overflow: hidden; margin-left: var(--s2);
  vertical-align: middle; }
.unit-flip button { font: inherit; font-size: 0.78rem; padding: 3px 10px;
  border: 0; background: transparent; color: var(--graphite); cursor: pointer; }
.unit-flip button.on { background: var(--ink); color: var(--paper); }

/* the rubber stamp button */
.stamp-btn { font-family: var(--font-sans); font-weight: 700;
  font-size: 1.05rem; letter-spacing: -0.01em; color: #fff;
  background: var(--stamp); border: 0; border-radius: 12px;
  padding: 15px 26px; cursor: pointer; width: 100%;
  box-shadow: 0 2px 0 var(--stamp-deep), 0 10px 22px rgb(47 143 107 / 0.35);
  transition: transform var(--dur-micro) var(--ease),
              box-shadow var(--dur-micro) var(--ease);
}
.stamp-btn:hover { transform: translateY(-1px); }
.stamp-btn:active { transform: translateY(2px) scale(0.99);
  box-shadow: 0 0 0 var(--stamp-deep), 0 4px 10px rgb(47 143 107 / 0.3); }
.stamp-btn:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.stamp-btn[disabled] { opacity: 0.55; cursor: default; transform: none; }

/* ============ S2 the wall chart ============ */
.chart-station { padding: var(--s9) 0; background:
  linear-gradient(var(--chartline) 1px, transparent 1px),
  linear-gradient(90deg, var(--chartline) 1px, transparent 1px),
  var(--paper-deep);
  background-size: 44px 44px, 44px 44px, auto;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  display: none; }
.chart-station.show { display: block; }
.chart-card { background: var(--card); border: 1px solid var(--line);
  border-radius: 4px; padding: clamp(18px, 3vw, 40px);
  box-shadow: 0 2px 5px rgb(35 36 43 / 0.05), 0 22px 50px rgb(35 36 43 / 0.10);
  position: relative; }
.chart-card::before { content: ""; position: absolute; top: -9px; left: 50%;
  width: 74px; height: 20px; transform: translateX(-50%) rotate(-1deg);
  background: rgb(240 226 180 / 0.8); border: 1px solid rgb(0 0 0 / 0.05); }
.chart-head { display: flex; justify-content: space-between;
  align-items: baseline; flex-wrap: wrap; gap: var(--s3);
  margin-bottom: var(--s5); }
.chart-title { font-family: var(--font-pencil);
  font-size: clamp(1.4rem, 2vw + 0.8rem, 2.1rem); color: var(--ink); }
.chart-sub { font-size: 0.9rem; color: var(--graphite); }
.figure { display: grid; grid-template-columns: 2fr 1fr;
  gap: clamp(20px, 3vw, 48px); align-items: start; }
#growthChart { width: 100%; height: auto; }
.readings { display: grid; gap: var(--s4); }
.reading { border-left: 3px solid var(--stamp); padding: var(--s2) var(--s4); }
.reading b { font-family: var(--font-sans); font-weight: 700;
  font-size: clamp(1.5rem, 1.4vw + 1rem, 2.1rem); letter-spacing: -0.02em;
  display: block; font-variant-numeric: tabular-nums; }
.reading span { font-size: 0.88rem; color: var(--graphite); }
.chart-actions { display: flex; gap: var(--s3); margin-top: var(--s5);
  flex-wrap: wrap; }
.ghost-btn { font: inherit; font-size: 0.95rem; color: var(--ink);
  background: transparent; border: 1px solid var(--ink); border-radius: 10px;
  padding: 10px 18px; cursor: pointer; text-decoration: none;
  transition: background var(--dur-micro) var(--ease); }
.ghost-btn:hover { background: rgb(35 36 43 / 0.06); }

/* ============ S3 the door frame ============ */
.frame-station { padding: var(--s8) 0 var(--s7); display: none; overflow: hidden; }
.frame-station.show { display: block; }
.frame-grid { display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 72px); align-items: center; }
#doorFrame { width: 100%; height: auto; }
.chair-stack { position: relative; border-radius: 14px; overflow: hidden;
  box-shadow: 0 2px 6px rgb(35 36 43 / 0.06), 0 20px 48px rgb(35 36 43 / 0.13); }
.chair-stack img { position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0; transition: opacity var(--dur-exp) var(--ease); }
.chair-stack img.on { opacity: 1; }
.chair-stack::after { content: ""; display: block; padding-top: 100%; }
.month-scrub { margin-top: var(--s5); }
.month-scrub input[type=range] { width: 100%; accent-color: var(--stamp); }
.scrub-read { display: flex; justify-content: space-between;
  font-family: var(--font-sans); font-size: 0.9rem; color: var(--graphite);
  font-variant-numeric: tabular-nums; }
.scrub-big { font-family: var(--font-sans); font-weight: 700;
  font-size: var(--t-h2); letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums; }

/* ============ S4 appointment cards ============ */
.stages { padding: var(--s9) 0; }
.stages h2, .journey h2, .book h2, .fridge h2 { font-family: var(--font-sans);
  font-weight: 700; font-size: var(--t-h2); letter-spacing: -0.025em;
  line-height: 1.12; margin: 0 0 var(--s3); max-width: 22ch; }
.card-rail { display: grid; grid-template-columns: repeat(5, 1fr);
  gap: var(--s4); margin-top: var(--s6); position: relative; }
.card-rail::before { content: ""; position: absolute; top: -14px; left: 2%;
  right: 2%; height: 2px; background: var(--line); }
.appt { background: var(--card); border: 1px solid var(--line);
  border-radius: 3px 3px 10px 10px; padding: var(--s4);
  border-top: 6px solid var(--band); position: relative;
  transition: transform var(--dur-std) var(--ease),
              box-shadow var(--dur-std) var(--ease); }
.appt:hover { transform: translateY(-4px) rotate(-0.4deg);
  box-shadow: 0 14px 30px rgb(35 36 43 / 0.12); }
.appt::before { content: ""; position: absolute; top: -13px; left: 50%;
  width: 10px; height: 10px; border-radius: 50%; background: var(--paper);
  border: 2px solid var(--graphite); transform: translateX(-50%); }
.appt .wk { font-family: var(--font-sans); font-size: var(--t-label);
  letter-spacing: 0.07em; text-transform: uppercase; color: var(--stamp-deep); }
.appt h3 { font-family: var(--font-sans); font-size: 1.05rem; margin: 6px 0;
  letter-spacing: -0.01em; }
.appt p { font-size: 0.88rem; color: var(--graphite); margin: 0; }

/* ============ S5 the punch card ============ */
.journey { padding: var(--s10) 0; background: var(--paper-deep);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.journey-grid { display: grid; grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 4vw, 72px); align-items: center; }
.punch { background: linear-gradient(160deg, #204d3a, #17382b);
  color: #f2eddd; border-radius: 18px; padding: clamp(22px, 3vw, 36px);
  box-shadow: 0 3px 8px rgb(31 77 58 / 0.25), 0 26px 60px rgb(31 77 58 / 0.35);
  position: relative; transform: rotate(1deg); }
.punch .cardlab { font-family: var(--font-sans); font-size: var(--t-label);
  letter-spacing: 0.14em; text-transform: uppercase; color: #c9b97e; }
.punch h3 { font-family: var(--font-sans); font-weight: 700;
  font-size: clamp(1.4rem, 2vw, 2rem); letter-spacing: -0.02em;
  margin: 8px 0 16px; }
.stamps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px;
  margin: var(--s5) 0; }
.stamps i { aspect-ratio: 1; border: 1.5px dashed rgb(242 237 221 / 0.4);
  border-radius: 50%; display: grid; place-items: center;
  font-style: normal; font-family: var(--font-pencil);
  color: rgb(242 237 221 / 0.85); font-size: 0.85rem; }
.stamps i.done { background: rgb(201 185 126 / 0.18);
  border-style: solid; border-color: #c9b97e; }
.punch .foot { font-size: 0.85rem; color: rgb(242 237 221 / 0.75); }
.plans { display: grid; gap: var(--s4); }
.plan { border: 1px solid var(--line); background: var(--card);
  border-radius: 14px; padding: var(--s5); cursor: pointer;
  transition: border-color var(--dur-micro) var(--ease),
              transform var(--dur-micro) var(--ease); position: relative; }
.plan:hover { transform: translateY(-2px); }
.plan.on { border-color: var(--stamp); outline: 2px solid var(--stamp); }
.plan .best { position: absolute; top: -11px; right: 14px;
  background: var(--stamp); color: #fff; font-family: var(--font-sans);
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  border-radius: 6px; padding: 3px 9px; }
.plan b { font-family: var(--font-sans); font-size: 1.35rem;
  letter-spacing: -0.02em; }
.plan .per { color: var(--graphite); font-size: 0.95rem; }
.plan p { margin: 6px 0 0; font-size: 0.9rem; color: var(--graphite); }
.journey ul { margin: var(--s5) 0; padding: 0; list-style: none; }
.journey li { padding-left: 30px; position: relative; margin-bottom: var(--s3); }
.journey li::before { content: ""; position: absolute; left: 0; top: 4px;
  width: 18px; height: 18px; border-radius: 50%; background: var(--band);
  border: 2px solid var(--stamp); }
.email-row { display: grid; grid-template-columns: 1fr auto; gap: var(--s3);
  margin-top: var(--s4); }
.email-row input { font: inherit; padding: 13px 14px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); min-width: 0; }
.email-row input:focus { outline: 2px solid var(--stamp); }
.email-row .stamp-btn { width: auto; }
.tiny-note { font-size: 0.8rem; color: var(--graphite); margin-top: var(--s2); }

/* ============ S6 the book ============ */
.book { padding: var(--s10) 0; }
.book-grid { display: grid; grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(24px, 4vw, 72px); align-items: center; }
.book-object { position: relative; perspective: 1200px; }
.book-cover { width: min(78%, 380px); margin: 0 auto; aspect-ratio: 148/210;
  border-radius: 6px 14px 14px 6px; position: relative;
  background: linear-gradient(105deg, #1c4736 0%, #235742 55%, #1c4736 100%);
  box-shadow: -24px 30px 60px rgb(35 36 43 / 0.28),
    inset 6px 0 12px rgb(0 0 0 / 0.35), inset -2px 0 6px rgb(255 255 255 / 0.08);
  transform: rotateY(-14deg) rotateZ(-1deg);
  transition: transform var(--dur-exp) var(--ease); }
.book-object:hover .book-cover { transform: rotateY(-6deg) rotateZ(0deg); }
.book-cover::before { content: ""; position: absolute; left: 14px; top: 0;
  bottom: 0; width: 2px; background: rgb(201 185 126 / 0.5); }
.book-cover .bc-in { position: absolute; inset: 24px 24px 24px 34px;
  border: 1px solid rgb(201 185 126 / 0.6); border-radius: 4px;
  padding: 22px 18px; color: #f2eddd; display: flex;
  flex-direction: column; }
.book-cover h3 { font-family: var(--font-sans); font-weight: 400;
  font-size: clamp(1.5rem, 2vw, 2rem); line-height: 1.1; margin: 26% 0 12px;
  letter-spacing: -0.01em; }
.book-cover .bc-rule { width: 44px; height: 1.5px; background: #c9b97e;
  margin-bottom: 12px; }
.book-cover .bc-sub { font-size: 0.8rem; color: rgb(242 237 221 / 0.8); }
.book-cover .bc-pub { margin-top: auto; font-family: var(--font-sans);
  font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: #c9b97e; }
.book-cover .ribbon { position: absolute; right: 26px; top: -6px; width: 14px;
  height: 52px; background: #a33d2e;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 84%, 0 100%); }
.price-line { display: flex; align-items: baseline; gap: var(--s3);
  margin: var(--s5) 0 var(--s3); }
.price-line b { font-family: var(--font-sans); font-size: 2rem;
  letter-spacing: -0.02em; }
.price-line span { color: var(--graphite); }
.book ul { padding: 0; margin: var(--s5) 0; list-style: none; }
.book li { padding-left: 30px; position: relative; margin-bottom: var(--s3); }
.book li::before { content: ""; position: absolute; left: 2px; top: 5px;
  width: 14px; height: 14px; background: var(--stamp);
  clip-path: polygon(14% 44%, 0 61%, 45% 100%, 100% 16%, 82% 2%, 42% 66%); }

/* ============ S7 fridge board ============ */
.fridge { padding: var(--s9) 0; background: var(--paper-deep);
  border-top: 1px solid var(--line); display: none; }
.fridge.show { display: block; }
.board { background: #fff; border: 10px solid #e8e4d8; border-radius: 8px;
  padding: clamp(18px, 3vw, 36px); box-shadow: 0 16px 40px rgb(35 36 43 / 0.1);
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(18px, 3vw, 48px); }
.board h3 { font-family: var(--font-pencil); font-size: 1.5rem; margin: 0 0 var(--s3);
  color: var(--stamp-deep); }
.board table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.board td { padding: 8px 4px; border-bottom: 1px dashed var(--line);
  font-variant-numeric: tabular-nums; }
.board td:last-child { text-align: right; font-family: var(--font-sans);
  font-weight: 500; }
.board .foot { font-size: 0.8rem; color: var(--graphite); margin-top: var(--s3); }

/* ============ S8 fine print + footer ============ */
.fineprint { padding: var(--s8) 0; border-top: 1px solid var(--line);
  font-size: 0.9rem; color: var(--graphite); }
.fineprint h2 { font-family: var(--font-sans); font-size: 1.1rem;
  color: var(--ink); letter-spacing: -0.01em; margin: 0 0 var(--s3); }
.fineprint p { max-width: 72ch; }
.cardback { padding: var(--s8) 0 var(--s7); border-top: 1px solid var(--line); }
.cardback-grid { display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 72px); }
.note-form input, .note-form textarea { width: 100%; font: inherit;
  border: 1px solid var(--line); border-radius: 10px; background: var(--card);
  padding: 12px 14px; margin-bottom: var(--s3); }
.note-form textarea { min-height: 96px; resize: vertical; }
.note-form input:focus, .note-form textarea:focus { outline: 2px solid var(--stamp); }
.cardback .fine { font-size: 0.8rem; color: var(--graphite); }
.cardback .links { display: flex; gap: var(--s4); flex-wrap: wrap;
  margin-top: var(--s4); font-size: 0.85rem; }

/* reveals */
.reveal { opacity: 0; transform: translateY(18px);
  transition: opacity var(--dur-exp) var(--ease),
              transform var(--dur-exp) var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 1ms !important; animation-duration: 1ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* mobile */
@media (max-width: 880px) {
  .scale-grid, .figure, .frame-grid, .journey-grid, .book-grid,
  .board, .cardback-grid { grid-template-columns: 1fr; }
  .card-rail { grid-template-columns: 1fr 1fr; }
  .card-rail::before { display: none; }
  .scale { padding-top: var(--s5); }
  .scale-photo { order: -1; }
  .scale-photo img { max-height: 320px; width: 100%; object-fit: cover; }
  .shelf nav { gap: var(--s3); }
  .shelf nav a { font-size: 0.78rem; white-space: nowrap; }
  .chair-stack { max-width: 420px; }
  .stamps { grid-template-columns: repeat(6, 1fr); }
}
@media (max-width: 520px) {
  .card-rail { grid-template-columns: 1fr; }
  .email-row { grid-template-columns: 1fr; }
}