:root {
  --font: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;

  --text: #3c3c3c;
  --text-muted: #777777;
  --text-faint: #afafaf;
  --surface: #ffffff;
  --surface-sunken: #f7f7f7;
  --border: #e5e5e5;

  --green: #58cc02;
  --green-edge: #58a700;
  --green-text: #3f7d00;
  --correct-bg: #d7ffb8;
  --red: #ff4b4b;
  --red-edge: #ea2b2b;
  --red-text: #c42020;
  --incorrect-bg: #ffdfe0;
  --blue: #1cb0f6;
  --blue-edge: #1899d6;
  --blue-text: #0d6f9e;
  --blue-fill: #ddf4ff;
  --orange-text: #b86200;
  --orange-fill: #fff0d9;
  --purple-text: #8e44c9;
  --purple-fill: #f5e6ff;
  --gold: #ffc800;
  --gold-text: #b38600;
  --streak: #ff9600;
  --streak-text: #c56a00;

  --p-pretend: #8e44c9;
  --p-pretend-fill: #f3e8ff;
  --p-problem: #c2410c;
  --p-problem-fill: #ffedd5;
  --p-pressure: #0e7ab8;
  --p-pressure-fill: #dcf1fc;
  --p-pay: #a16207;
  --p-pay-fill: #fef3c7;

  --sms-in: #e9e9eb;
  --sms-out: #1677c9;
  --sms-link: #0b63c4;
  --avatar: #8e8e93;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-phone: 20px;
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --ease-spring: linear(0, 0.058, 0.189, 0.346, 0.501, 0.639, 0.752, 0.84, 0.905, 0.951, 0.981, 0.999, 1.01, 1.014, 1.015, 1.014, 1.012, 1.01, 1.007, 1.005, 1);
  --spring-duration: 600ms;
  --column: 600px;
  --bar-space: 96px;
}

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

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

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

button {
  font: inherit;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

img {
  display: block;
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

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

.icon {
  display: inline-flex;
  width: 24px;
  height: 24px;
}

.icon svg {
  width: 100%;
  height: 100%;
}

/* Buttons */

.btn {
  --btn-bg: var(--surface);
  --btn-side: var(--border);
  --btn-edge: var(--border);
  --btn-text: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 12px 20px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 2px solid var(--btn-side);
  border-bottom: 4px solid var(--btn-edge);
  border-radius: var(--radius-lg);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition-property: background-color, border-color, color, filter;
  transition-duration: 150ms;
}

.btn-primary {
  --btn-bg: var(--green);
  --btn-side: var(--green);
  --btn-edge: var(--green-edge);
  --btn-text: #ffffff;
}

.btn-danger {
  --btn-bg: var(--red);
  --btn-side: var(--red);
  --btn-edge: var(--red-edge);
  --btn-text: #ffffff;
}

.btn-blue {
  --btn-bg: var(--blue);
  --btn-side: var(--blue);
  --btn-edge: var(--blue-edge);
  --btn-text: #ffffff;
}

.btn:disabled {
  --btn-bg: var(--border);
  --btn-side: var(--border);
  --btn-edge: var(--border);
  --btn-text: var(--text-faint);
  cursor: default;
}

.btn-secondary:disabled {
  --btn-bg: var(--surface);
}

.btn:active:not(:disabled),
.choice:active:not(:disabled),
.tile:active:not(:disabled) {
  transform: translateY(2px);
  border-bottom-width: 2px;
  margin-bottom: 2px;
}

@media (hover: hover) {
  .btn:hover:not(:disabled) {
    filter: brightness(1.06);
  }

  .btn-secondary:hover:not(:disabled) {
    --btn-bg: var(--surface-sunken);
    filter: none;
  }
}

.btn-wide {
  width: 100%;
  max-width: 360px;
}

.btn-text {
  min-height: 44px;
  padding: 10px 16px;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  color: var(--blue-edge);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

.btn-text-danger {
  color: var(--red-edge);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 15px;
}

.icon-button {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-faint);
  cursor: pointer;
  transition: color 150ms;
}

@media (hover: hover) {
  .icon-button:hover {
    color: var(--text-muted);
  }
}

.sound-toggle[aria-pressed="true"] .icon-soundOff,
.sound-toggle[aria-pressed="false"] .icon-soundOn {
  display: none;
}

/* Lesson shell */

.lesson {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--surface);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: calc(var(--column) + 32px);
  margin: 0 auto;
  padding: 12px 8px;
}

.progress {
  flex: 1;
  height: 16px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  --progress: 0;
  position: relative;
  height: 100%;
  width: calc(var(--progress) * 100%);
  background: var(--green);
  border-radius: inherit;
  transition: width 500ms var(--ease-out);
}

.progress-fill::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 8px;
  right: 8px;
  height: 4px;
  border-radius: 999px;
  background: rgb(255 255 255 / 0.3);
}

.lesson-main {
  flex: 1;
  padding: 8px 16px calc(var(--sheet-space, var(--bar-space)) + 32px);
  outline: none;
}

.column {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: var(--column);
  margin: 0 auto;
}

.badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-replay {
  background: var(--orange-fill);
  color: var(--orange-text);
}

.badge-boss {
  background: var(--purple-fill);
  color: var(--purple-text);
}

/* Biscuit and speech bubbles */

.prompt-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.biscuit-prompt {
  flex: none;
  width: 96px;
  height: 96px;
}

.biscuit-large {
  width: 180px;
  height: 180px;
}

.biscuit-quit {
  width: 96px;
  height: 96px;
}

.bubble {
  position: relative;
  min-width: 0;
  padding: 12px 16px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
}

.bubble > p {
  margin: 0;
}

.bubble::before {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--surface);
}

.bubble-left {
  flex: 1;
}

.bubble-left::before {
  top: 50%;
  left: -9px;
  border-left: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  transform: translateY(-50%) rotate(45deg);
}

.bubble-above {
  display: flex;
  align-items: center;
  gap: 4px;
  max-width: 380px;
  font-size: 18px;
  text-align: left;
}

.bubble-listen {
  color: var(--blue);
}

@media (hover: hover) {
  .bubble-listen:hover {
    color: var(--blue-edge);
  }
}

.bubble-above::before {
  left: 50%;
  bottom: -9px;
  border-right: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  transform: translateX(-50%) rotate(45deg);
}

.prompt-line {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 4px;
}

.prompt-line .bubble-listen {
  margin: -6px -10px -6px 0;
}

.prompt {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.25;
  text-wrap: pretty;
}

@media (min-width: 420px) {
  .biscuit-prompt {
    width: 110px;
    height: 110px;
  }

  .prompt {
    font-size: 24px;
  }
}

.new-word-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--text-muted);
}

.new-word {
  padding: 0;
  background: none;
  border: none;
  color: var(--text);
  font-weight: 800;
  text-decoration: underline dotted 2px var(--text-faint);
  text-underline-offset: 4px;
  cursor: pointer;
}

.new-word-definition {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 4;
  width: min(260px, 70vw);
  padding: 10px 12px;
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 2px var(--border), 0 8px 20px rgb(0 0 0 / 0.08);
  color: var(--text);
}

/* Phone message */

.exercise {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.context-card {
  margin: 0;
  padding: 12px 14px;
  background: var(--surface-sunken);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 15px;
}

.context-card strong {
  color: var(--text);
  font-weight: 800;
}

.phone {
  overflow: hidden;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-phone);
}

.phone-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--surface-sunken);
  border-bottom: 2px solid var(--border);
}

.phone-avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--avatar);
  color: #ffffff;
  font-weight: 800;
}

.phone-sender {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
}

.phone-meta {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.phone-thread {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px;
}

.sms {
  max-width: 85%;
  margin: 0;
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

.sms-in {
  align-self: flex-start;
  background: var(--sms-in);
  color: #000000;
  border-bottom-left-radius: 6px;
}

.sms-out {
  align-self: flex-end;
  background: var(--sms-out);
  color: #ffffff;
  border-bottom-right-radius: 6px;
}

.sms-link {
  color: var(--sms-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Choice cards */

.choice {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-radius: var(--radius-lg);
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition-property: background-color, border-color, color;
  transition-duration: 150ms;
}

@media (hover: hover) {
  .choice:hover:not(:disabled):not([aria-pressed="true"]):not(.is-match):not(.is-mismatch) {
    background: var(--surface-sunken);
  }
}

.choice[aria-pressed="true"] {
  background: var(--blue-fill);
  border-color: var(--blue);
  color: var(--blue-text);
}

.choice.is-correct {
  background: var(--correct-bg);
  border-color: var(--green);
  color: var(--green-text);
}

.choice.is-wrong {
  background: var(--incorrect-bg);
  border-color: var(--red);
  color: var(--red-text);
}

.choice:disabled {
  cursor: default;
}

.choice-emoji {
  font-size: 32px;
  line-height: 1;
}

.choice-label {
  min-width: 0;
}

.choice-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.choice-pair .choice {
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 20px 12px;
  text-align: center;
}

.choice-pair .choice-label {
  font-size: 19px;
  font-weight: 800;
}

.choice-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 480px) {
  .choice-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .choice-cards .choice {
    flex-direction: column;
    justify-content: flex-start;
    padding: 20px 12px;
    text-align: center;
  }

  .choice-cards .choice-emoji {
    font-size: 44px;
  }

  .choice-cards .choice-label {
    font-size: 15px;
  }
}

.choice-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.choice-number {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-faint);
  font-size: 15px;
  font-weight: 800;
}

.choice[aria-pressed="true"] .choice-number,
.choice.is-correct .choice-number,
.choice.is-wrong .choice-number {
  border-color: currentColor;
  color: inherit;
}

.reply-list .choice {
  justify-content: space-between;
}

.reply-bubble {
  max-width: 85%;
  padding: 8px 14px;
  background: var(--sms-out);
  color: #ffffff;
  border-radius: 18px;
  border-bottom-right-radius: 6px;
  font-weight: 600;
}

/* Tap text */

.sms-tappable {
  max-width: 100%;
  font-size: 18px;
  line-height: 1.8;
}

.segment {
  padding: 2px 0;
  border-radius: 4px;
  text-decoration: underline dotted 2px #b4b4b8;
  text-underline-offset: 5px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  cursor: pointer;
  transition: background-color 150ms;
}

@media (hover: hover) {
  .segment:not([aria-disabled="true"]):hover {
    background: rgb(28 176 246 / 0.12);
  }
}

.segment[aria-pressed="true"] {
  background: var(--blue-fill);
  text-decoration: underline solid 3px var(--blue);
}

.segment.is-correct {
  background: var(--correct-bg);
  text-decoration: underline solid 3px var(--green);
}

.segment.is-missed {
  background: var(--correct-bg);
  text-decoration: underline dashed 3px var(--green);
}

.segment.is-wrong {
  background: var(--incorrect-bg);
  text-decoration: underline solid 3px var(--red);
}

.segment.is-neutral {
  text-decoration-color: transparent;
}

.segment[aria-disabled="true"] {
  cursor: default;
}

.p-pretend {
  --p-color: var(--p-pretend);
  --p-fill: var(--p-pretend-fill);
}

.p-problem {
  --p-color: var(--p-problem);
  --p-fill: var(--p-problem-fill);
}

.p-pressure {
  --p-color: var(--p-pressure);
  --p-fill: var(--p-pressure-fill);
}

.p-pay {
  --p-color: var(--p-pay);
  --p-fill: var(--p-pay-fill);
}

.segment-tag,
.example-tag {
  display: inline-block;
  margin: 0 4px;
  padding: 0 7px;
  border-radius: 6px;
  background: var(--p-color, var(--green-edge));
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  line-height: 20px;
  vertical-align: 2px;
}

.tap-counter {
  margin: -4px 0 0;
  color: var(--text-muted);
  font-size: 15px;
  text-align: right;
}

/* Match pairs */

.pairs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.pair-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pair-tile {
  flex: 1;
  justify-content: center;
  min-height: 72px;
  padding: 10px 12px;
  font-size: 15px;
  text-align: center;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.pair-right {
  position: relative;
  display: flex;
  flex: 1;
}

.pair-right .pair-tile {
  padding-right: 34px;
}

.pair-info {
  position: absolute;
  top: 6px;
  right: 6px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 3px;
  background: none;
  border: none;
  border-radius: 50%;
  color: var(--text-faint);
  cursor: pointer;
}

.pair-tile.is-match {
  background: var(--correct-bg);
  border-color: var(--green);
  color: var(--green-text);
}

.pair-tile.is-mismatch {
  background: var(--incorrect-bg);
  border-color: var(--red);
  color: var(--red-text);
}

.pair-tile.is-done {
  background: var(--surface);
  border-color: var(--border);
  color: #cfcfcf;
}

.pair-right:has(.is-done) .pair-info {
  visibility: hidden;
}

.pair-hint {
  min-height: 1.4em;
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
  text-align: center;
}

/* Word bank */

.answer-lines {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 14px 8px;
  min-height: 128px;
  padding-top: 8px;
  background-image: repeating-linear-gradient(to bottom, transparent 0 58px, var(--border) 58px 60px);
}

.word-bank {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 8px;
  padding-top: 12px;
}

.tile-slot {
  display: inline-flex;
  border-radius: var(--radius-md);
}

.tile-slot.is-empty {
  background: var(--border);
}

.tile-slot.is-empty .tile {
  visibility: hidden;
}

.tile {
  min-height: 46px;
  padding: 8px 14px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
}

.tile:disabled {
  cursor: default;
}

.answer-lines.is-correct .tile {
  color: var(--green-text);
}

.answer-lines.is-wrong .tile {
  color: var(--red-text);
}

/* Bottom bar and feedback sheet */

.bottom-bar,
.sheet {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
}

.bottom-bar {
  z-index: 10;
  background: var(--surface);
  border-top: 2px solid var(--border);
}

.bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  max-width: var(--column);
  margin: 0 auto;
}

.btn-check {
  flex: 1;
}

@media (min-width: 600px) {
  .btn-check {
    flex: 0 0 180px;
  }

  .bottom-bar .btn-secondary {
    flex: 0 0 140px;
  }
}

.sheet {
  z-index: 11;
  padding-top: 20px;
  transform: translateY(100%);
  visibility: hidden;
  transition: transform 200ms ease-out, visibility 0s linear 200ms;
}

.sheet[data-state="correct"],
.sheet[data-state="incorrect"] {
  transform: none;
  visibility: visible;
  transition: transform 200ms ease-out, visibility 0s;
}

.sheet[data-state="correct"] {
  --sheet-accent: var(--green-edge);
  --sheet-text: var(--green-text);
  background: var(--correct-bg);
}

.sheet[data-state="incorrect"] {
  --sheet-accent: var(--red-edge);
  --sheet-text: var(--red-text);
  background: var(--incorrect-bg);
}

.sheet-inner {
  flex-direction: column;
  gap: 16px;
}

.sheet-peek {
  position: absolute;
  bottom: 100%;
  right: max(16px, calc((100% - var(--column)) / 2 + 8px));
  width: 104px;
  height: 96px;
  overflow: hidden;
  pointer-events: none;
}

.sheet-peek img {
  width: 104px;
  height: 104px;
  translate: 0 105%;
  transition: translate 150ms ease-out;
}

.sheet[data-state="correct"] .sheet-peek img,
.sheet[data-state="incorrect"] .sheet-peek img {
  translate: 0 6px;
  transition: translate var(--spring-duration) var(--ease-spring) 120ms;
}

.sheet-message {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.sheet-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--sheet-accent);
}

.sheet-icon .icon {
  width: 22px;
  height: 22px;
}

.sheet-text {
  min-width: 0;
  color: var(--sheet-text);
}

.sheet-heading {
  margin: 4px 0 6px;
  color: var(--sheet-accent);
  font-size: 22px;
  font-weight: 900;
  line-height: 1.2;
}

.sheet-answer {
  margin-bottom: 6px;
}

.sheet-almost {
  margin: 0 0 6px;
  font-weight: 800;
}

.sheet-answer-label {
  margin: 0;
  color: var(--sheet-accent);
  font-weight: 800;
}

.sheet-answer-text,
.sheet-feedback {
  margin: 0;
  font-size: 16px;
}

.sheet-answer-list {
  margin: 2px 0 0;
  padding-left: 20px;
  font-size: 15px;
}

.sheet-feedback {
  font-weight: 700;
}

.sheet-button {
  width: 100%;
}

@media (min-width: 720px) {
  .sheet-inner {
    flex-direction: row;
    align-items: center;
  }

  .sheet-button {
    flex: 0 0 180px;
    width: auto;
  }
}

/* Quit sheet */

.quit-sheet {
  width: 100%;
  max-width: 100%;
  margin: auto 0 0;
  padding: 24px 16px calc(24px + env(safe-area-inset-bottom));
  background: var(--surface);
  color: var(--text);
  border: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overscroll-behavior: contain;
}

.quit-sheet::backdrop {
  background: rgb(0 0 0 / 0.5);
}

.quit-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
  text-align: center;
}

.quit-content h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 900;
}

.quit-content p {
  margin: 0 0 8px;
  color: var(--text-muted);
}

@media (min-width: 720px) {
  .quit-sheet {
    max-width: 440px;
    margin: auto;
    border-radius: var(--radius-lg);
  }
}

/* Intro and complete screens */

.screen {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 32px 16px 24px;
  outline: none;
}

.screen-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.unit-label {
  margin: 0 0 -12px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 800;
}

.screen-title {
  margin: 0;
  font-size: 28px;
  font-weight: 900;
  line-height: 1.2;
  text-wrap: balance;
}

.screen-note {
  margin: 0;
  color: var(--text-muted);
}

.character-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.rule-card {
  width: 100%;
  margin: 0;
  padding: 16px 18px;
  background: var(--blue-fill);
  color: var(--blue-text);
  border-radius: var(--radius-lg);
  font-size: 17px;
  font-weight: 800;
  text-align: left;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
}

.stat {
  display: flex;
  flex-direction: column;
  padding: 2px;
  background: var(--stat-color);
  border-radius: var(--radius-md);
}

.stat-xp {
  --stat-color: var(--gold);
  --stat-text: var(--gold-text);
}

.stat-accuracy {
  --stat-color: var(--green);
  --stat-text: var(--green-edge);
}

.stat-streak {
  --stat-color: var(--streak);
  --stat-text: var(--streak-text);
}

.stat-label {
  margin: 0;
  padding: 4px 4px 3px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stat-value {
  margin: 0;
  padding: 12px 4px;
  background: var(--surface);
  border-radius: calc(var(--radius-md) - 2px);
  color: var(--stat-text);
  font-size: 20px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.review {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-top: -8px;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.review-item {
  padding: 14px 16px;
  background: var(--surface-sunken);
  border-radius: var(--radius-md);
}

.review-prompt {
  margin: 0 0 4px;
  font-weight: 800;
}

.review-answer {
  margin: 0;
  color: var(--green-text);
  font-size: 15px;
}

.disclaimer {
  max-width: 420px;
  margin: 32px auto 0;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}

.disclaimer p {
  margin: 0;
}

.confetti {
  position: fixed;
  inset: 0;
  z-index: 20;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Intro chat */

.screen-chat {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: calc(var(--column) + 32px);
  margin: 0 auto;
  padding: 8px 16px 0;
  outline: none;
}

.chat-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-skip {
  color: var(--text-muted);
}

.chat-stage {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  padding: 0 0 12px;
  cursor: pointer;
}

.chat-character {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin: 0;
  opacity: 0.55;
  transition: opacity 200ms ease-out;
}

.chat-character.is-speaking {
  opacity: 1;
}

.chat-character-image {
  width: 104px;
  height: 104px;
}

.chat-character figcaption {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 800;
}

.chat-phone {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  border: 2px solid var(--border);
  border-radius: var(--radius-phone);
}

.chat-header-avatar {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.chat-thread {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  padding: 12px;
  overflow-y: auto;
  cursor: pointer;
}

.chat-row {
  display: grid;
  grid-template-rows: 0fr;
}

.chat-row-inner {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  min-height: 0;
  padding: 4px 0;
  overflow: hidden;
}

.from-biscuit .chat-row-inner {
  justify-content: flex-end;
}

.chat-row-avatar {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.chat-bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

.chat-bubble > p {
  margin: 0;
}

.chat-bubble-in {
  background: var(--sms-in);
  color: #000000;
  border-bottom-left-radius: 6px;
  transform-origin: bottom left;
}

.chat-bubble-out {
  background: var(--sms-out);
  color: #ffffff;
  border-bottom-right-radius: 6px;
  transform-origin: bottom right;
}

.forwarded {
  margin-bottom: 8px;
  padding: 8px 10px;
  background: #ffffff;
  color: #000000;
  border-radius: 12px;
  font-size: 15px;
}

.forwarded p {
  margin: 0;
}

.forwarded-sender {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 800;
}

.typing-dots {
  display: inline-flex;
  gap: 5px;
  padding: 14px 16px;
  background: var(--sms-in);
  border-radius: 18px;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8e8e93;
}

.from-biscuit .typing-dots {
  background: var(--sms-out);
}

.from-biscuit .typing-dots span {
  background: #ffffff;
}

.chat-footer {
  padding: 16px 0 calc(16px + env(safe-area-inset-bottom));
}

.chat-footer .bar-inner {
  justify-content: center;
}

.chat-start {
  visibility: hidden;
}

.chat-start.is-ready {
  visibility: visible;
}

.chat-morph {
  position: fixed;
  z-index: 30;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: #ffffff;
  pointer-events: none;
}

.chat-morph > span {
  grid-area: 1 / 1;
  white-space: nowrap;
}

.chat-morph-old {
  font-size: 17px;
  font-weight: 600;
}

.chat-morph-new {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.screen-chat.has-example .chat-character-image {
  width: 76px;
  height: 76px;
}

.chat-example-slot {
  display: grid;
  grid-template-rows: 0fr;
}

.chat-example-clip {
  min-height: 0;
  overflow: hidden;
}

.chat-example {
  margin-bottom: 12px;
  padding: 12px 14px;
  background: var(--surface-sunken);
  border-radius: var(--radius-lg);
}

.chat-example p {
  margin: 0;
}

.example-sender {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 800;
}

.example-text {
  color: #000000;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.75;
}

.example-part {
  padding: 2px 0;
  border-radius: 4px;
  background: color-mix(in srgb, var(--p-fill) calc(var(--mark, 0) * 100%), transparent);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.example-tag {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  vertical-align: middle;
  transform-origin: 50% 50%;
}

/* Motion */

@media (prefers-reduced-motion: no-preference) {
  .is-bouncing {
    animation: bounce 260ms var(--ease-out);
  }

  .is-mismatch {
    animation: shake 360ms ease-in-out;
  }

  .is-hopping {
    animation: hop 560ms var(--ease-out);
  }

  .sms-out.is-entering {
    animation: bubble-in 320ms var(--ease-out);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sheet-peek img,
  .sheet[data-state="correct"] .sheet-peek img,
  .sheet[data-state="incorrect"] .sheet-peek img {
    translate: 0 6px;
    transition: none;
  }

  .sheet,
  .sheet[data-state="correct"],
  .sheet[data-state="incorrect"] {
    transform: none;
    transition: opacity 200ms ease-out, visibility 0s linear 200ms;
  }

  .sheet[data-state="idle"] {
    opacity: 0;
  }

  .progress-fill {
    transition: none;
  }
}

@keyframes bounce {
  0% { scale: 1; }
  35% { scale: 0.96; }
  70% { scale: 1.02; }
  100% { scale: 1; }
}

@keyframes shake {
  0%, 100% { translate: 0; }
  20% { translate: -6px; }
  40% { translate: 6px; }
  60% { translate: -4px; }
  80% { translate: 4px; }
}

@keyframes hop {
  0% { translate: 0 0; }
  35% { translate: 0 -16px; }
  70% { translate: 0 0; }
  85% { translate: 0 -3px; }
  100% { translate: 0 0; }
}

@keyframes bubble-in {
  from { opacity: 0; translate: 0 12px; scale: 0.9; }
  to { opacity: 1; translate: 0 0; scale: 1; }
}

.celebrate-character {
  transform-origin: 50% 100%;
}

.complete-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}