:root {
  --bg: #d9c4ad;
  --surface: #f6f2ec;
  --surface-strong: #ffffff;
  --text: #221f1c;
  --muted: #776d64;
  --line: rgba(54, 45, 39, 0.14);
  --brand: #0d8f7a;
  --brand-strong: #07705f;
  --accent: #e58c43;
  --danger: #cf5f5d;
  --success: #76c9af;
  --blue: #4f87c7;
  --shadow: 0 14px 34px rgba(62, 48, 38, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #27231f;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.app-shell {
  width: min(100vw, 430px);
  min-height: 100vh;
  margin: 0 auto;
  background: linear-gradient(180deg, #d5bea3 0%, #ded4c6 100%);
  position: relative;
  overflow-x: hidden;
}

.view {
  display: none;
  min-height: 100vh;
  padding: 24px 18px 100px;
}

.view.active {
  display: block;
}

.topbar {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

.topbar.compact {
  justify-content: flex-start;
}

.topbar h1,
.hero-panel h2,
.copy-card h2 {
  margin: 0;
}

.topbar h1 {
  font-size: 24px;
  line-height: 1.2;
}

.eyebrow,
.section-label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.hero-panel,
.question-panel,
.result-panel,
.study-card,
.audio-panel,
.report-panel,
.empty-state {
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.hero-panel h2 {
  max-width: 290px;
  font-size: 28px;
  line-height: 1.16;
  margin-bottom: 22px;
}

.primary-button,
.secondary-button,
.list-button,
.option-card,
.icon-button,
.text-link,
.segmented button,
.sound-button,
.speaker-tile,
.sound-mini {
  border: 0;
  cursor: pointer;
}

.primary-button,
.secondary-button {
  min-height: 48px;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 800;
}

.primary-button {
  background: var(--brand);
  color: #fff;
}

.primary-button:hover {
  background: var(--brand-strong);
}

.primary-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.primary-button.small {
  min-height: 42px;
}

.secondary-button {
  background: rgba(255, 255, 255, 0.72);
  color: var(--brand-strong);
}

.icon-button {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.52);
  color: var(--text);
  font-size: 28px;
  line-height: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 16px 0;
}

.coach-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 16px 0;
}

.coach-strip article {
  min-height: 74px;
  border-radius: 8px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--line);
}

.coach-strip span {
  display: block;
  font-weight: 900;
}

.coach-strip small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
}

.info-strip {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.info-strip article {
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
}

.info-strip span,
.info-strip small {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.info-strip strong {
  display: block;
  margin: 4px 0;
  font-size: 18px;
}

.metric {
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 10px;
  text-align: center;
}

.metric span {
  display: block;
  font-size: 24px;
  font-weight: 900;
}

.metric small,
.copy-card small,
.review-card small,
.collocation-list small {
  color: var(--muted);
}

.action-list,
.option-stack,
.word-list,
.review-stack {
  display: grid;
  gap: 12px;
}

.list-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  min-height: 74px;
  padding: 16px;
  background: var(--surface);
  border-radius: 8px;
  text-align: left;
}

.list-button span {
  font-weight: 900;
}

.list-button small {
  color: var(--muted);
}

.test-word {
  margin: 22px 0 8px;
  font-size: 52px;
  letter-spacing: 0;
}

.muted,
.hint {
  color: var(--muted);
}

.timeout-tip {
  margin: 8px 0 14px;
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(229, 140, 67, 0.16);
  color: #6d4424;
  font-weight: 800;
}

.option-card {
  width: 100%;
  min-height: 70px;
  padding: 16px;
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--text);
  text-align: left;
  font-size: 22px;
  border: 1px solid transparent;
}

.option-card small,
.option-card span {
  display: block;
}

.option-card small {
  margin-top: 6px;
  color: var(--muted);
  font-size: 16px;
}

.option-card.correct {
  background: var(--success);
  border-color: var(--brand);
}

.option-card.wrong {
  background: #e9a29e;
  border-color: var(--danger);
}

.option-card.muted-card {
  opacity: 0.45;
}

.unknown-choice {
  margin-top: 10px;
}

.unknown-button {
  width: 100%;
  min-height: 46px;
  border-radius: 8px;
  border: 1px dashed rgba(33, 66, 61, 0.26);
  background: rgba(255, 255, 255, 0.58);
  color: var(--text);
  font-weight: 900;
}

.counter-bar,
.bottom-actions {
  position: fixed;
  left: 50%;
  bottom: 0;
  width: min(100vw, 430px);
  transform: translateX(-50%);
  padding: 14px 18px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(245, 236, 224, 0.92);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.bottom-actions.two {
  justify-content: stretch;
}

.bottom-actions.two button {
  flex: 1;
}

.pill {
  min-width: 72px;
  padding: 8px 14px;
  border-radius: 8px;
  color: #fff;
  text-align: center;
  font-weight: 900;
}

.green {
  background: var(--brand);
}

.red {
  background: var(--danger);
}

.blue {
  background: var(--blue);
}

.progress-label {
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
  font-size: 18px;
  font-weight: 800;
}

.vocab-number {
  display: block;
  font-size: 58px;
  margin: 8px 0 18px;
}

.bar-chart {
  height: 170px;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 42px;
  padding: 18px 8px;
  border-bottom: 3px solid var(--text);
}

.bar {
  width: 74px;
  min-height: 34px;
  border-radius: 8px 8px 0 0;
  position: relative;
}

.bar.target {
  height: 82%;
  background: #5eaa68;
}

.bar.current {
  background: #68add0;
}

.bar span {
  position: absolute;
  left: 50%;
  bottom: -34px;
  width: 92px;
  transform: translateX(-50%);
  text-align: center;
  font-size: 13px;
  color: var(--text);
}

.copy-card,
.example-card {
  margin-top: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.memory-image {
  width: 100%;
  min-height: 210px;
  margin: 10px 0 18px;
  border: 1px solid rgba(54, 45, 39, 0.18);
  border-radius: 8px;
  padding: 18px;
  background:
    radial-gradient(circle at 82% 18%, rgba(229, 140, 67, 0.34) 0 18%, transparent 19%),
    linear-gradient(135deg, #f7efe2 0%, #b9ddcf 100%);
  color: var(--text);
  overflow: hidden;
  position: relative;
}

.memory-illustration {
  position: absolute;
  right: 14px;
  top: 16px;
  width: 118px;
  height: 96px;
  opacity: 0.9;
}

.memory-illustration rect {
  fill: rgba(255, 255, 255, 0.46);
  stroke: rgba(13, 143, 122, 0.28);
}

.memory-illustration circle {
  fill: rgba(229, 140, 67, 0.34);
}

.memory-illustration path {
  fill: none;
  stroke: rgba(34, 31, 28, 0.42);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.memory-image::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
  border: 10px solid rgba(13, 143, 122, 0.16);
}

.completion-burst {
  margin: 0 0 14px;
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(118, 201, 175, 0.28);
  border: 1px solid rgba(13, 143, 122, 0.28);
  color: var(--brand-strong);
  font-weight: 900;
  animation: soft-pop 520ms ease-out;
}

.memory-image span,
.memory-image small {
  display: inline-block;
  border-radius: 8px;
  padding: 5px 9px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.memory-image strong {
  display: block;
  max-width: 230px;
  margin: 16px 0 8px;
  font-size: 34px;
  line-height: 1.12;
}

.memory-image p {
  max-width: 260px;
  margin: 12px 0 0;
  color: #4d443d;
  line-height: 1.45;
}

.precheck-row {
  display: grid;
  grid-template-columns: 24px 38px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 70px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.precheck-row.picked {
  border-color: rgba(13, 143, 122, 0.5);
  background: rgba(255, 255, 255, 0.78);
}

.index {
  color: var(--muted);
}

.select-toggle {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #eee6db;
  color: var(--muted);
  font-weight: 900;
}

.select-toggle.on {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.word-link {
  border: 0;
  background: transparent;
  font-size: 22px;
  text-align: left;
}

.segmented {
  display: flex;
  gap: 6px;
}

.segmented button {
  min-height: 34px;
  border-radius: 8px;
  padding: 0 9px;
  background: #eee6db;
  color: var(--muted);
  font-size: 13px;
}

.segmented button.selected {
  background: var(--success);
  color: var(--text);
}

.segmented button.danger {
  background: #eaa09e;
}

.study-card {
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.study-card h1 {
  margin: 26px 0 14px;
  font-size: 48px;
  letter-spacing: 0;
}

.sound-button,
.speaker-tile {
  background: var(--surface-strong);
  color: var(--text);
  border-radius: 8px;
  font-weight: 900;
}

.sound-button {
  min-height: 48px;
  padding: 0 18px;
}

.speaker-tile {
  width: 132px;
  height: 92px;
  margin-bottom: 22px;
  font-size: 22px;
}

.ipa {
  color: var(--muted);
  font-size: 22px;
}

.ipa span {
  display: inline-block;
  margin-right: 8px;
  border-radius: 8px;
  padding: 3px 9px;
  background: rgba(255, 255, 255, 0.48);
  font-size: 14px;
}

.meaning {
  font-size: 28px;
  line-height: 1.35;
}

.meaning span {
  display: inline-block;
  margin-right: 8px;
  color: var(--muted);
  font-size: 18px;
}

.text-link {
  background: transparent;
  color: var(--brand-strong);
  font-weight: 900;
  padding: 8px 0;
}

.text-link.centered {
  display: block;
  margin: 18px auto 0;
  color: var(--text);
  font-size: 22px;
}

.review-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  align-items: center;
  min-height: 92px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.review-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid var(--line);
}

.review-summary strong {
  white-space: nowrap;
}

.review-summary span {
  color: var(--muted);
  font-size: 13px;
}

.review-card h2 {
  margin: 0 0 4px;
}

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

.sound-mini {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
}

.audio-panel {
  min-height: 680px;
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 58px 0 0;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10;
}

.modal.active {
  display: block;
}

.modal__scrim {
  position: absolute;
  inset: 0;
  background: rgba(30, 26, 22, 0.36);
}

.modal__panel {
  position: absolute;
  left: 50%;
  bottom: 18px;
  width: min(calc(100vw - 28px), 402px);
  max-height: 82vh;
  overflow: auto;
  transform: translateX(-50%);
  background: var(--surface-strong);
  border-radius: 8px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
}

.detail-word {
  margin: 14px 48px 10px 0;
  color: #f07a1b;
  font-size: 46px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin: 18px 0 10px;
}

.tabs button {
  min-height: 34px;
  border: 0;
  border-radius: 8px;
  padding: 0 12px;
  background: #ece4db;
  color: var(--muted);
}

.tabs button.active {
  background: var(--surface);
  color: var(--text);
  font-weight: 800;
}

.collocation-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.collocation-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.report-panel {
  text-align: center;
}

.report-ring {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  background: conic-gradient(var(--brand) 0 var(--accuracy), rgba(255, 255, 255, 0.44) var(--accuracy) 100%);
  color: var(--text);
  font-size: 30px;
  font-weight: 900;
}

@keyframes soft-pop {
  0% {
    transform: translateY(8px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 360px) {
  .view {
    padding-left: 14px;
    padding-right: 14px;
  }

  .test-word,
  .study-card h1,
  .detail-word {
    font-size: 40px;
  }

  .precheck-row {
    grid-template-columns: 22px 34px 1fr;
  }

  .segmented {
    grid-column: 3;
  }
}