:root {
  --scrubs: #0d4f52;
  --scrubs-deep: #083638;
  --monitor: #04191a;
  --trace: #4dffa6;
  --paper: #fdfaf2;
  --print: #23302f;
  --faint: #5d6b69;
  --rule: #cfdbe0;
  --margin: #f3bccb;
  --red-pen: #d3124f;
  --blue-pen: #1c3fa8;
  --highlighter: #ffe95c;
  --amber-pen: #a86a00;
  --hand: "Caveat", "Segoe Print", "Bradley Hand", cursive;
  --form: "Barlow Semi Condensed", "Arial Narrow", system-ui, sans-serif;
  --mono: "Share Tech Mono", ui-monospace, Consolas, monospace;
  --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M3 13c2 2 4 5 6 8C12 13 16 7 22 2' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --ring: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 50' preserveAspectRatio='none'%3E%3Cpath d='M60 5C30 1 6 9 4 25c-2 16 30 23 55 20 26-3 40-13 37-24C93 9 66 3 42 7' fill='none' stroke='%23000' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E");
  --heart: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath d='M16 29C7 22 2 17 2 10.500 2 6 5.500 3 9.500 3c2.700 0 5 1.400 6.500 4 1.500-2.600 3.800-4 6.500-4C26.500 3 30 6 30 10.500 30 17 25 22 16 29z' fill='%23d3124f' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

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

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    repeating-linear-gradient(135deg, rgb(255 255 255 / .025) 0 2px, transparent 2px 5px),
    linear-gradient(var(--scrubs), var(--scrubs-deep));
  background-attachment: fixed;
  color: var(--print);
  font: 500 1.1rem/1.35 var(--form);
}

/* Bedside monitor, doubling as the progress bar */

.monitor {
  position: sticky;
  top: 0;
  z-index: 3;
  padding: calc(.45rem + env(safe-area-inset-top)) .9rem .35rem;
  border-bottom: 3px solid #1d2b2c;
  background: var(--monitor);
  color: var(--trace);
  font-family: var(--mono);
}

.monitor-readout {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: .95rem;
}

.progress-label { margin: 0; }

.heart-rate {
  margin: 0;
  color: #ff6b8e;
  font-size: 1.15rem;
}

.heart-rate span {
  display: inline-block;
  animation: beat var(--beat, .8s) ease-out infinite;
}

@keyframes beat {
  0%, 60%, 100% { transform: scale(1); }
  20% { transform: scale(1.35); }
}

.ecg {
  position: relative;
  height: 2.4rem;
  background-image:
    linear-gradient(rgb(77 255 166 / .08) 1px, transparent 1px),
    linear-gradient(90deg, rgb(77 255 166 / .08) 1px, transparent 1px);
  background-size: .8rem .8rem;
}

.ecg svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  fill: none;
  stroke-linejoin: round;
  stroke-width: 2;
}

.ecg path, .ecg use { vector-effect: non-scaling-stroke; }

.ecg-ghost { stroke: rgb(77 255 166 / .16); }

.ecg-live {
  stroke: var(--trace);
  filter: drop-shadow(0 0 3px var(--trace));
  clip-path: inset(0 100% 0 0);
  transition: clip-path .6s ease-out;
}

/* Chart paper on a clipboard */

.paper {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  width: calc(100% - 1rem);
  max-width: 35rem;
  margin: 1.1rem auto 0;
  border-radius: .35rem .35rem 0 0;
  background:
    linear-gradient(90deg, transparent .7rem, var(--margin) .7rem, var(--margin) calc(.7rem + 1px), transparent calc(.7rem + 1px)),
    var(--paper);
  box-shadow: 0 .4rem 1.5rem rgb(0 0 0 / .4);
  /* Unlike hidden, clip keeps the sticky nav working. */
  overflow-x: clip;
}

.paper::before {
  content: "";
  position: absolute;
  top: -.7rem;
  left: 50%;
  z-index: 2;
  width: 7.5rem;
  height: 1.7rem;
  margin-left: -3.75rem;
  border-radius: .4rem .4rem .2rem .2rem;
  background: linear-gradient(#e9eef0, #9aa7ab 45%, #d3dbde 55%, #7c898d);
  box-shadow: 0 2px 3px rgb(0 0 0 / .45);
}

.chart-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.5rem 1.25rem 0;
  padding-bottom: .3rem;
  border-bottom: 2px solid var(--print);
  font-family: var(--mono);
  font-size: .78rem;
  text-transform: uppercase;
}

form { flex: 1; display: flex; flex-direction: column; }

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.25rem 0;
}

.js .screen:not(.active) { display: none; }

/* Pages flip over the top of the clipboard. */

.paper { perspective: 70rem; }

.js .screen.active {
  transform-origin: top center;
  animation: page-flip .35s ease-out;
}

@keyframes page-flip {
  from { opacity: 0; transform: rotateX(-24deg); }
  to { opacity: 1; transform: none; }
}

html:not(.js) .monitor,
html:not(.js) [data-go] { display: none; }

h1, h2 {
  margin: 0;
  outline: none;
}

h1 {
  font: 700 clamp(3.6rem, 19vw, 4.75rem)/.95 var(--hand);
  color: var(--red-pen);
  transform: rotate(-2deg);
}

h2 {
  font: 700 1.9rem/1.05 var(--form);
  letter-spacing: -.01em;
  text-transform: uppercase;
}

.lede { margin: 1.1rem 0 .8rem; font-size: 1.25rem; }

.sub {
  margin: .15rem 0 1.2rem;
  color: var(--red-pen);
  font: 700 1.5rem/1.1 var(--hand);
}

.fine-print {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--faint);
  font-size: 1.05rem;
}

/* The patient's yellow "fall risk" band */

.wristband {
  position: relative;
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 1.8rem -1.25rem .4rem -.4rem;
  padding: .55rem 1.25rem .55rem 1rem;
  border-radius: .5rem 0 0 .5rem;
  background: var(--highlighter);
  box-shadow: 0 2px 5px rgb(35 48 47 / .35);
  font-family: var(--mono);
  font-size: .82rem;
  line-height: 1.3;
  text-transform: uppercase;
  transform: rotate(1.5deg);
}

.wristband strong { display: block; font-size: 1.15rem; letter-spacing: .04em; }

.barcode {
  flex: 0 0 3.4rem;
  height: 2.4rem;
  background: repeating-linear-gradient(90deg, var(--print) 0 2px, transparent 2px 4px, var(--print) 4px 5px, transparent 5px 9px);
}

.stamp {
  align-self: flex-end;
  margin: 1.7rem .25rem 1.5rem;
  padding: .35rem .7rem;
  border: 3px solid var(--red-pen);
  border-radius: .3rem;
  color: var(--red-pen);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-align: center;
  text-transform: uppercase;
  transform: rotate(-6deg);
  opacity: .85;
}

.notice {
  margin: 0 0 1.4rem;
  padding: .7rem .85rem;
  border: 2px solid var(--print);
  font-weight: 600;
}

/* Fields */

fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }

.field { margin-bottom: 1.7rem; }

.q {
  display: block;
  padding: 0;
  margin-bottom: .2rem;
  font-size: 1.15rem;
  font-weight: 700;
}

input[type="text"],
textarea {
  display: block;
  width: 100%;
  padding: 0 .2rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--blue-pen);
  font: 700 1.6rem/2.2rem var(--hand);
  outline: none;
  -webkit-appearance: none;
}

input[type="text"] {
  border-bottom: 2px solid var(--print);
}

input[type="text"]:focus { border-bottom-color: var(--red-pen); }

textarea {
  resize: vertical;
  background-image: repeating-linear-gradient(transparent 0 calc(2.2rem - 2px), var(--print) calc(2.2rem - 2px) 2.2rem);
  background-attachment: local;
}

textarea:focus {
  background-image: repeating-linear-gradient(transparent 0 calc(2.2rem - 2px), var(--red-pen) calc(2.2rem - 2px) 2.2rem);
}

::placeholder {
  color: #7f8fa8;
  font-weight: 500;
  font-size: 1.35rem;
  opacity: 1;
}

/* Tick boxes: a pen check and a swipe of highlighter */

.choices { display: grid; }

.choices.two { grid-template-columns: 1fr 1fr; column-gap: 1rem; }

.choice { position: relative; display: block; cursor: pointer; }

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice span {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 3rem;
  padding: .3rem .3rem .3rem 2.1rem;
  background: linear-gradient(var(--highlighter), var(--highlighter)) left center / 0 62% no-repeat;
  line-height: 1.15;
  transition: background-size .22s ease-out;
  -webkit-tap-highlight-color: transparent;
}

.choices .choice span::before {
  content: "";
  position: absolute;
  left: .2rem;
  top: 50%;
  width: 1.3rem;
  height: 1.3rem;
  margin-top: -.65rem;
  border: 2px solid var(--print);
  background: var(--paper);
}

.choice span::after {
  content: "";
  position: absolute;
  left: .1rem;
  top: 50%;
  width: 2rem;
  height: 2rem;
  margin-top: -1.25rem;
  background: var(--red-pen);
  -webkit-mask: var(--check) center / contain no-repeat;
  mask: var(--check) center / contain no-repeat;
  clip-path: inset(0 100% 0 0);
}

.choices .choice input:checked + span {
  background-size: 100% 62%;
  font-weight: 700;
}

.choice input:checked + span::after {
  clip-path: inset(0);
  transition: clip-path .22s ease-out .05s;
}

.choice input:focus-visible + span {
  outline: 2px dashed var(--blue-pen);
  outline-offset: 1px;
}

/* Yes / No / Maybe grid: circle one in pen */

.menu-item {
  position: relative;
  padding-left: 37%;
  border-bottom: 1px solid var(--rule);
}

.menu-item legend {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 36%;
  display: flex;
  align-items: center;
  padding: 0;
  font-weight: 700;
  line-height: 1.1;
}

.ynm { display: grid; grid-template-columns: repeat(3, 1fr); }

.ynm .choice span {
  justify-content: center;
  padding: .3rem .1rem;
  background: none;
  color: var(--faint);
}

.ynm .choice { --pen: var(--red-pen); }
.ynm .choice.no { --pen: var(--print); }
.ynm .choice.maybe { --pen: var(--amber-pen); }

.ynm .choice span::after {
  inset: .3rem .05rem;
  width: auto;
  height: auto;
  margin: 0;
  background: var(--pen);
  -webkit-mask: var(--ring) center / 100% 100% no-repeat;
  mask: var(--ring) center / 100% 100% no-repeat;
}

.ynm .choice input:checked + span {
  color: var(--pen);
  font: 700 1.5rem/1 var(--hand);
}

.menu-item:last-of-type { margin-bottom: 1rem; }

/* Sliders: a graduated barrel with a heart for a plunger */

.slider-label {
  display: flex;
  align-items: center;
  min-height: 3.3rem;
  margin-bottom: .1rem;
  color: var(--red-pen);
  font: 700 1.6rem/1.05 var(--hand);
}

input[type="range"] {
  --fill: 50%;
  display: block;
  width: 100%;
  height: 2.75rem;
  margin: 0;
  background: none;
  -webkit-appearance: none;
  appearance: none;
  touch-action: pan-y;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 1rem;
  border: 2px solid var(--print);
  border-radius: .2rem;
  background:
    repeating-linear-gradient(90deg, var(--print) 0 1px, transparent 1px 11.11%) 0 0 / 100% 45% no-repeat,
    linear-gradient(90deg, #f7a8c0 var(--fill), transparent var(--fill));
}

input[type="range"]::-moz-range-track {
  height: 1rem;
  border: 2px solid var(--print);
  border-radius: .2rem;
  background: repeating-linear-gradient(90deg, var(--print) 0 1px, transparent 1px 11.11%) 0 0 / 100% 45% no-repeat;
}

input[type="range"]::-moz-range-progress {
  height: 1rem;
  background: #f7a8c0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 2.5rem;
  height: 2.5rem;
  margin-top: -.875rem;
  border: 0;
  background: var(--heart) center / contain no-repeat;
  filter: drop-shadow(0 1px 2px rgb(0 0 0 / .4));
}

input[type="range"]::-moz-range-thumb {
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  background: var(--heart) center / contain no-repeat;
}

input[type="range"]:focus-visible {
  outline: 2px dashed var(--blue-pen);
  outline-offset: 2px;
}

.slider-ends {
  display: flex;
  justify-content: space-between;
  padding: 0 .55rem;
  color: var(--faint);
  font-family: var(--mono);
  font-size: .85rem;
}

.slider-ends.faces { padding: 0; font-size: 1.3rem; }

/* Navigation */

.nav {
  position: sticky;
  bottom: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: auto -1.25rem 0;
  padding: .7rem 1.25rem calc(.8rem + env(safe-area-inset-bottom));
  border-top: 2px dashed var(--rule);
  background: var(--paper);
}

.btn {
  flex: 1;
  min-height: 3.25rem;
  padding: .4rem 1rem;
  border: 0;
  border-radius: .3rem;
  background: var(--red-pen);
  color: #fff;
  font: 700 1.3rem var(--form);
  letter-spacing: .05em;
  text-transform: uppercase;
  outline: 2px solid var(--red-pen);
  outline-offset: 3px;
  transform: rotate(-.7deg);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.btn:active { transform: rotate(-.7deg) scale(.96); }

.btn:disabled { opacity: .6; cursor: default; }

.btn:focus-visible { outline-color: var(--blue-pen); }

.btn.ghost {
  flex: 0 0 auto;
  padding: .4rem .3rem;
  background: none;
  color: var(--print);
  font-size: 1.1rem;
  letter-spacing: 0;
  text-decoration: underline;
  text-transform: none;
  outline: none;
  transform: none;
}

.btn.ghost:focus-visible { outline: 2px dashed var(--blue-pen); }

.error {
  margin: 0 0 1rem;
  padding: .6rem .85rem;
  border: 2px solid var(--red-pen);
  color: var(--red-pen);
  font-weight: 700;
}

.honeypot {
  position: absolute;
  left: -9999px;
}

/* Thank-you: the appointment card */

.thanks { justify-content: center; padding-bottom: 3rem; }

.thanks h1 { font-size: clamp(3rem, 15vw, 3.9rem); }

.thanks .lede { font-size: 1.35rem; }

.thanks-note { padding: 0; }

.card {
  position: relative;
  margin: .5rem 0 3.6rem;
}

.card dl {
  margin: 0;
  border: 2px solid var(--print);
}

.card dl div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .4rem .7rem;
  border-bottom: 1px solid var(--rule);
}

.card dl div:last-of-type { border-bottom: 0; }

.card dt { font-weight: 700; }

.card dd {
  margin: 0;
  color: var(--blue-pen);
  font: 700 1.45rem/1.1 var(--hand);
  text-align: right;
}

.booked {
  position: absolute;
  right: .5rem;
  bottom: -2.9rem;
  margin: 0;
  padding: .1rem .7rem;
  text-transform: uppercase;
  border: 4px solid var(--red-pen);
  border-radius: .3rem;
  background: rgb(253 250 242 / .75);
  color: var(--red-pen);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: .1em;
  transform: rotate(-9deg);
  animation: stamp-down .3s cubic-bezier(.2, 1.4, .4, 1) .35s backwards;
}

@keyframes stamp-down {
  from { opacity: 0; transform: rotate(-9deg) scale(2.4); }
}

/* Wider screens see the whole clipboard on the desk. */

@media (min-width: 36rem) {
  .paper {
    flex: 0 1 auto;
    min-height: 42rem;
    margin: 2.2rem auto;
    border-radius: .35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .heart-rate span,
  .js .screen.active,
  .booked { animation: none; }

  .ecg-live,
  .choice span,
  .choice input:checked + span::after { transition: none; }
}