:root {
  color-scheme: light;
  --paper: #f7f4ed;
  --ink: #23201c;
  --muted: #70685d;
  --line: #ded6c8;
  --accent: #146c63;
  --accent-strong: #0d504a;
  --good: #116b38;
  --bad: #a4382f;
  --panel: #fffdf8;
  --focus: 0 0 0 3px rgba(20, 108, 99, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  width: min(100%, 520px);
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) 18px max(18px, env(safe-area-inset-bottom));
}

.hidden {
  display: none !important;
}

.setup,
.quiz,
.result {
  min-height: calc(100vh - 36px);
  min-height: calc(100dvh - 36px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.title-block {
  padding: 18px 0 6px;
}

.eyebrow,
.source,
.prompt-caption,
.no-label,
.quiz-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

h1 {
  margin: 4px 0 8px;
  font-size: 2.15rem;
  letter-spacing: 0;
}

.control-group,
.prompt-panel,
.feedback,
.review-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.control-group {
  padding: 14px;
}

.group-label {
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
}

.range-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.range-grid label,
.answer-input {
  display: grid;
  gap: 6px;
}

.range-grid span,
.answer-input span {
  color: var(--muted);
  font-size: 0.8rem;
}

input[type="number"],
input[type="text"] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
  outline: none;
}

input:focus-visible,
button:focus-visible {
  box-shadow: var(--focus);
  outline: none;
}

.quick-ranges,
.segmented {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.quick-ranges button,
.segmented button,
.secondary-button,
.text-button,
.choice-button {
  min-height: 44px;
  border-radius: 8px;
  background: #ece5d8;
  color: var(--ink);
  font-weight: 700;
}

.segmented button.active,
.choice-button.selected {
  background: var(--accent);
  color: #fff;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
}

.check-row input {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.text-button {
  padding: 0 12px;
}

.primary-button,
.secondary-button {
  width: 100%;
  min-height: 54px;
  border-radius: 8px;
  font-weight: 800;
}

.primary-button {
  margin-top: auto;
  background: var(--accent);
  color: #fff;
}

.primary-button:active {
  background: var(--accent-strong);
}

.secondary-button {
  background: #ece5d8;
}

.quiz-header {
  display: grid;
  grid-template-columns: 44px 1fr 72px;
  align-items: center;
  gap: 12px;
  padding-top: 4px;
}

.icon-button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ece5d8;
  color: var(--ink);
  font-size: 1.35rem;
}

.progress-track {
  height: 8px;
  margin-top: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7dece;
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent);
  transition: width 180ms ease;
}

#scoreLabel {
  text-align: right;
}

.prompt-panel {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px;
}

.prompt-panel h2 {
  margin: 6px 0 0;
  font-size: 1.42rem;
  font-weight: 800;
  letter-spacing: 0;
}

.answer-form {
  display: grid;
  gap: 12px;
}

.choices {
  display: grid;
  gap: 10px;
}

.choice-button {
  width: 100%;
  padding: 12px;
  text-align: left;
}

.feedback {
  min-height: 76px;
  padding: 12px;
}

.feedback.good {
  border-color: rgba(17, 107, 56, 0.35);
  color: var(--good);
}

.feedback.bad {
  border-color: rgba(164, 56, 47, 0.35);
  color: var(--bad);
}

.feedback strong {
  display: block;
  color: var(--ink);
  font-size: 1.08rem;
}

.review-list {
  display: grid;
  gap: 10px;
  max-height: 46vh;
  overflow: auto;
  padding-right: 2px;
}

.review-item {
  padding: 12px;
}

.review-item strong {
  display: block;
}

.review-item p {
  margin: 4px 0 0;
  color: var(--muted);
}

@media (min-width: 640px) {
  .app-shell {
    padding-top: 32px;
  }

  .setup,
  .quiz,
  .result {
    min-height: calc(100vh - 64px);
    min-height: calc(100dvh - 64px);
  }
}

@media (max-width: 520px), (max-height: 760px) {
  body {
    line-height: 1.38;
  }

  .app-shell {
    padding: max(10px, env(safe-area-inset-top)) 12px max(10px, env(safe-area-inset-bottom));
  }

  .setup,
  .quiz,
  .result {
    min-height: calc(100vh - 20px);
    min-height: calc(100dvh - 20px);
    gap: 10px;
  }

  .title-block {
    padding: 8px 0 0;
  }

  h1 {
    margin: 2px 0 4px;
    font-size: 1.72rem;
  }

  .eyebrow,
  .source,
  .prompt-caption,
  .no-label,
  .quiz-header p {
    font-size: 0.78rem;
  }

  .control-group {
    padding: 10px;
  }

  .group-label {
    margin-bottom: 6px;
  }

  .range-grid,
  .quick-ranges,
  .segmented {
    gap: 6px;
  }

  .quick-ranges,
  .segmented {
    margin-top: 8px;
  }

  input[type="number"],
  input[type="text"] {
    min-height: 42px;
    padding: 8px 10px;
  }

  .quick-ranges button,
  .segmented button,
  .secondary-button,
  .text-button,
  .choice-button {
    min-height: 38px;
  }

  .primary-button,
  .secondary-button {
    min-height: 46px;
  }

  .quiz-header {
    grid-template-columns: 38px 1fr 60px;
    gap: 8px;
    padding-top: 0;
  }

  .icon-button {
    width: 38px;
    height: 38px;
    font-size: 1.15rem;
  }

  .progress-track {
    height: 6px;
    margin-top: 4px;
  }

  .prompt-panel {
    min-height: 150px;
    padding: 14px;
  }

  .prompt-panel h2 {
    margin-top: 4px;
    font-size: 1.12rem;
  }

  .answer-form,
  .choices {
    gap: 8px;
  }

  .choice-button {
    padding: 9px 10px;
  }

  .feedback {
    min-height: 52px;
    padding: 9px 10px;
    font-size: 0.9rem;
  }

  .feedback strong {
    font-size: 0.98rem;
  }

  .review-list {
    max-height: 42vh;
  }
}

@media (max-height: 640px) {
  .setup,
  .quiz,
  .result {
    gap: 8px;
  }

  .source {
    display: none;
  }

  .prompt-panel {
    min-height: 128px;
  }

  .answer-input span,
  .range-grid span {
    display: none;
  }

  .feedback {
    min-height: 44px;
  }
}