:root {
  --bg: #fff9c4;
  --panel: #fff;
  --ink: #1f2933;
  --muted: #795548;
  --line: #ffe0a3;
  --accent: #ffb300;
  --accent-dark: #ff8f00;
  --blue: #1565c0;
  --green: #2f7d4f;
  --red: #b83a2f;
  --soft: #fff8e1;
  --shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, #fff9c4, #ffe082),
    var(--bg);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.app-shell {
  width: min(100%, 560px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 12px;
}

.app-card {
  min-height: calc(100vh - 24px);
  padding: 24px 20px;
  background: var(--panel);
  border: 0;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.brand,
.section-title,
.quiz-header,
.action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  justify-content: flex-start;
  margin-bottom: 22px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  place-items: center;
  color: #e65100;
  background: #fff8e1;
  border: 2px solid #ffcc80;
  border-radius: 50%;
  font-size: 1.7rem;
  animation: bob 2s ease-in-out infinite;
}

@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

h1 {
  margin-bottom: 2px;
  color: #e65100;
  font-size: 1.35rem;
}

.brand p,
.hero p,
.stats-grid p,
.eyebrow,
.control-group label,
.answer-label,
.choice-button span {
  color: var(--muted);
}

.view {
  width: 100%;
}

.hidden {
  display: none !important;
}

.hero {
  margin-bottom: 20px;
  text-align: center;
}

.hero-icon {
  display: inline-grid;
  width: 62px;
  height: 62px;
  place-items: center;
  margin-bottom: 14px;
  color: #e65100;
  background: #fff8e1;
  border: 3px solid #ffcc80;
  border-radius: 50%;
  font-size: 2.4rem;
  font-weight: 900;
  animation: bob 2s ease-in-out infinite;
}

.hero h2 {
  margin-bottom: 8px;
  color: #e65100;
  font-size: 2rem;
  line-height: 1.05;
}

.choice-stack {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.choice-button {
  display: grid;
  gap: 4px;
  width: 100%;
  min-height: 84px;
  padding: 16px;
  border: 3px solid var(--accent);
  border-radius: 18px;
  color: var(--ink);
  background: #fff8e1;
  text-align: left;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.choice-button strong {
  font-size: 1.25rem;
}

.choice-button:hover {
  color: white;
  background: var(--accent);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
}

.choice-button:hover span {
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stats-grid article {
  min-width: 0;
  padding: 12px 8px;
  border: 1px solid #ffe0a3;
  border-radius: 14px;
  background: #fff8e1;
  text-align: center;
}

.stats-grid span {
  display: block;
  font-size: 1.45rem;
  font-weight: 900;
}

.stats-grid p {
  margin-bottom: 0;
  font-size: 0.78rem;
}

.section-title {
  align-items: flex-start;
  margin-bottom: 16px;
}

.section-title h2,
.section-title h3,
.quiz-header h2 {
  margin-bottom: 0;
}

.eyebrow {
  margin-bottom: 4px;
  text-transform: uppercase;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0;
}

.text-button {
  min-height: 38px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  color: #e65100;
  background: #fff8e1;
  font-weight: 800;
}

.control-group {
  display: grid;
  gap: 8px;
  margin-bottom: 15px;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 15px;
}

.control-group label,
.answer-label {
  font-size: 0.9rem;
  font-weight: 800;
}

select,
input[type="text"],
input[type="search"] {
  width: 100%;
  min-height: 48px;
  border: 3px solid #e0e0e0;
  border-radius: 16px;
  color: var(--ink);
  background: white;
}

select,
input[type="search"] {
  padding: 0 12px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.switch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 10px;
  border: 2px solid #ffd180;
  border-radius: 14px;
  background: #fff8e1;
  font-weight: 800;
}

.switch-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.primary-action,
.secondary-action,
.exit-action,
.small-button,
.listen-button,
.word-audio {
  border: 0;
  border-radius: 14px;
  font-weight: 900;
}

.primary-action,
.secondary-action,
.exit-action {
  width: 100%;
  min-height: 50px;
}

.primary-action {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 4px 18px rgba(255, 179, 0, 0.35);
}

.primary-action:hover {
  background: linear-gradient(135deg, #ffc107, #ff6f00);
}

.secondary-action {
  margin-top: 10px;
  color: var(--ink);
  background: var(--soft);
  border: 2px solid #ffd180;
}

.exit-action {
  margin-top: 10px;
  color: #c62828;
  background: #ffebee;
  border: 2px solid #ffcdd2;
}

.quiz-header {
  align-items: flex-start;
}

.quiz-header h2 {
  font-size: 1.35rem;
}

.score-pill {
  display: flex;
  min-width: 82px;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 8px;
  color: white;
  background: #e65100;
  font-weight: 900;
}

.progress-track {
  height: 12px;
  margin: 16px 0 22px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7dfd0;
}

.progress-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #ffb300, #ff6f00);
  transition: width 180ms ease;
}

.listen-card {
  display: grid;
  grid-template-columns: 1fr 76px 76px;
  gap: 8px;
  margin-bottom: 16px;
}

.listen-button {
  min-height: 88px;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 4px 18px rgba(255, 179, 0, 0.35);
  font-size: 1.8rem;
}

.small-button {
  min-height: 44px;
  padding: 0 10px;
  color: var(--blue);
  background: #e3f2fd;
  border: 2px solid #90caf9;
}

.small-button:disabled {
  cursor: default;
  opacity: 0.48;
}

.feedback {
  min-height: 36px;
  margin-bottom: 12px;
  font-weight: 800;
}

.feedback.good {
  color: var(--green);
}

.feedback.bad {
  color: var(--red);
}

.feedback.hint {
  color: var(--blue);
}

#answerInput {
  min-height: 64px;
  padding: 0 16px;
  border-width: 2px;
  text-align: center;
  font-size: 1.75rem;
  font-weight: 900;
}

#answerInput:focus,
.search-input:focus,
select:focus {
  border-color: var(--accent);
  outline: 3px solid rgba(199, 119, 25, 0.2);
}

#answerInput.correct {
  border-color: var(--green);
  background: #edf8f0;
}

#answerInput.incorrect {
  border-color: var(--red);
  background: #fff0ef;
}

.action-row {
  margin-top: 14px;
}

.practice-summary {
  display: flex;
  gap: 6px;
  margin: 10px 0 12px;
  color: var(--muted);
  font-weight: 800;
}

.word-list {
  display: grid;
  gap: 8px;
  max-height: calc(100vh - 245px);
  margin: 0;
  padding: 0;
  overflow: auto;
  list-style: none;
}

.word-list.compact {
  max-height: 270px;
  margin-top: 12px;
}

.word-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.word-list.compact li {
  grid-template-columns: minmax(0, 1fr) auto;
}

.word-list span {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.word-list strong,
.word-list em {
  min-width: 0;
  overflow-wrap: anywhere;
}

.word-list em {
  color: var(--muted);
  font-size: 0.82rem;
  font-style: normal;
  line-height: 1.25;
}

.word-list small {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.word-audio {
  min-height: 34px;
  padding: 0 10px;
  color: var(--blue);
  background: #e3f2fd;
  border: 1px solid #90caf9;
}

.result-card {
  padding: 22px 16px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, #ffb300, #ff8f00);
  text-align: center;
}

.result-card h2 {
  margin-bottom: 10px;
  font-size: 3rem;
}

.review-block {
  margin-top: 18px;
}

@media (max-width: 420px) {
  .app-shell {
    padding: 0;
  }

  .app-card {
    min-height: 100vh;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .control-grid,
  .listen-card,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .listen-button {
    min-height: 76px;
  }

  .word-list li {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .word-list small {
    display: none;
  }
}