@font-face {
  font-family: "PP Supply Mono";
  src: url("./assets/PPSupplyMono-Regular.otf") format("opentype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("./assets/Pretendard-Regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+1100-11FF, U+302E-302F, U+3130-318F, U+A960-A97F, U+AC00-D7A3, U+D7B0-D7FF, U+FFA0-FFDC;
}

:root {
  --word-spacing: -2pt;
  color-scheme: light;
  font-family: "Pretendard", "PP Supply Mono", monospace;
  font-size: 14px;
  font-weight: 400;
  line-height: 17px;
  letter-spacing: -0.04em;
  word-spacing: var(--word-spacing);
  text-align: center;
  color: #000;
  background: #fff;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 280px;
  min-height: 100%;
}

body {
  min-height: 100svh;
}

.mobile-screen {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: 480px;
  height: 100vh;
  height: 100svh;
  min-height: 520px;
  margin-inline: auto;
  overflow: hidden;
  background: #fff;
  touch-action: manipulation;
}

.mobile-screen:focus-visible {
  outline: 1px solid #bbb;
  outline-offset: -1px;
}

.conversation {
  position: absolute;
  z-index: 1;
  top: 353px;
  inset-inline: 24px;
}

.message {
  position: absolute;
  inset: 0 0 auto;
  opacity: 0;
  transform: translateY(8px);
  transition: transform 500ms cubic-bezier(0.22, 1, 0.36, 1), opacity 350ms ease;
}

.message--current {
  opacity: 1;
  transform: translateY(0);
}

.message--previous {
  opacity: 0.2;
  transform: translateY(-33px);
  pointer-events: none;
}

.message--leaving {
  opacity: 0;
  transform: translateY(-33px);
  pointer-events: none;
}

.message__text {
  display: block;
  margin: 0;
  overflow: hidden;
  font: inherit;
  letter-spacing: inherit;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.entry-form {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  gap: calc(0.56em + var(--word-spacing));
  max-width: 100%;
  margin: 0;
  vertical-align: top;
}

.entry-form[hidden],
.entry-input[hidden] {
  display: none;
}

.entry-form .message__text {
  flex: 0 0 auto;
}

.entry-measure {
  position: fixed;
  top: 0;
  left: 0;
  width: max-content;
  visibility: hidden;
  pointer-events: none;
  white-space: pre;
}

.entry-input {
  flex: 0 1 auto;
  width: var(--entry-width, 4ch);
  min-width: 2ch;
  height: 44px;
  margin-block: -13.5px;
  padding: 13.5px 0;
  border: 0;
  border-radius: 0;
  outline: none;
  background-color: transparent;
  background-image: linear-gradient(#a8a8a8, #a8a8a8);
  background-position: center 30px;
  background-repeat: no-repeat;
  background-size: 100% 1px;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-align: center;
  caret-color: #000;
  appearance: none;
  word-spacing: inherit;
}

.entry-input--typing {
  width: calc(var(--entry-width, 4ch) * var(--underline-progress, 0));
  min-width: 0;
  pointer-events: none;
}

.entry-input:focus-visible {
  background-image: linear-gradient(#000, #000);
}

.entry-input[aria-invalid="true"] {
  background-image: linear-gradient(#000, #000);
  background-size: 100% 2px;
}

.entry-input.entry-input--confirmed,
.entry-input:disabled {
  opacity: 1;
  color: #000;
  -webkit-text-fill-color: #000;
  background-image: none;
}

.save-error {
  margin: 12px 0 0;
  font: inherit;
  letter-spacing: inherit;
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.landing-menu {
  position: absolute;
  top: 290px;
  left: 48px;
  max-width: calc(100% - 96px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  font-size: 12pt;
  line-height: 40px;
  letter-spacing: 0;
  text-align: left;
}

.text-link {
  display: block;
  width: fit-content;
  min-height: 44px;
  margin-inline: auto;
  padding: 13.5px 8px;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  word-spacing: inherit;
  text-align: center;
  text-decoration: none;
}

.landing-menu .text-link {
  min-height: 40px;
  margin: 0;
  padding: 0;
  text-align: inherit;
}

.text-link:hover,
.text-link:active {
  opacity: 0.5;
}

.landing-menu .text-link:hover,
.landing-menu .text-link:focus-visible {
  font-weight: 400;
  -webkit-text-stroke: 0.25px currentColor;
  opacity: 1;
}

.text-link:focus-visible {
  outline: 1px solid #bbb;
  outline-offset: 2px;
}

.page-navigation {
  position: absolute;
  z-index: 2;
  inset-inline: 24px;
  bottom: max(30px, env(safe-area-inset-bottom));
  min-height: 44px;
  text-align: center;
}

.page-code-label {
  display: inline-flex;
  align-items: baseline;
  gap: calc(0.56em + var(--word-spacing));
  max-width: 100%;
  min-height: 44px;
}

.page-code-input {
  width: var(--page-code-width, 4ch);
  min-width: 1ch;
  max-width: min(240px, 60vw);
  height: 44px;
  padding: 13.5px 0;
  border: 0;
  border-radius: 0;
  outline: none;
  color: inherit;
  background: transparent;
  font: inherit;
  letter-spacing: inherit;
  word-spacing: inherit;
  text-align: left;
  caret-color: #000;
  appearance: none;
}

.page-code-input:focus {
  background-image: linear-gradient(#a8a8a8, #a8a8a8);
  background-position: center 32px;
  background-repeat: no-repeat;
  background-size: 100% 1px;
}

.page-code-error {
  position: absolute;
  bottom: 100%;
  inset-inline: 0;
  margin: 0 0 8px;
  font: inherit;
}

@media (max-height: 620px) {
  .page-navigation {
    bottom: max(12px, env(safe-area-inset-bottom));
  }
}

@media (prefers-reduced-motion: reduce) {
  .message {
    transition: none;
  }
}

/* 54 × 40 logo at x32, y36. */
.brand-mark {
  position: absolute;
  z-index: 0;
  top: 36px;
  left: 32px;
  width: 54px;
  height: 40px;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}

/* Keep the mobile composition when it is previewed on a larger display. */
@media (min-width: 481px) {
  :root {
    background: #f3f3f3;
  }
}