:root {
  --bg: #f5efe2;
  --panel: #fffaf0;
  --text: #1f2937;
  --muted: #4b5563;
  --accent: #1d6b4d;
  --correct: #1f7a1f;
  --wrong: #9b1c1c;
  --border: #d6d3c6;
  --font-ui: "Marcellus", "Times New Roman", serif;
  --font-music: "Bravura Text", "Petaluma", "Noto Music", "Marcellus", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, #fff6d6 0%, transparent 45%),
    radial-gradient(circle at 85% 90%, #e4f7ed 0%, transparent 35%),
    var(--bg);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.app {
  width: min(760px, 100%);
}

h1 {
  margin: 0;
}

.subtitle {
  margin-top: 0.4rem;
  color: var(--muted);
}

.controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.controls label {
  font-weight: 700;
}

.controls select {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  background: #fff;
  font-family: var(--font-ui);
}

.status {
  display: flex;
  justify-content: space-between;
  margin: 1rem 0;
  font-weight: 600;
}

.progressWrap {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #e5e7eb;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progressFill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #1d6b4d, #2a9d68);
  transition: width 160ms ease;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.promptType {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

#term {
  margin-top: 0.4rem;
  margin-bottom: 1rem;
  font-family: var(--font-music);
  letter-spacing: 0.2px;
}

.choices {
  display: grid;
  gap: 0.7rem;
}

.choice {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 10px;
  padding: 1rem 1.05rem;
  padding-right: 2.6rem;
  text-align: left;
  font-size: 1.08rem;
  line-height: 1.35;
  min-height: 62px;
  cursor: pointer;
  font-family: var(--font-music);
  position: relative;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.choice:hover:enabled {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.1);
}

.choice.correct {
  border-color: var(--correct);
  background: #eaf9ea;
}

.choice.correct::after {
  content: "✓";
  color: var(--correct);
  font-weight: 800;
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
}

.choice.wrong {
  border-color: var(--wrong);
  background: #fde9e9;
}

.choice.wrong::after {
  content: "✗";
  color: var(--wrong);
  font-weight: 800;
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
}

.feedback {
  min-height: 1.5rem;
  margin: 1rem 0 0.8rem;
  font-weight: 700;
}

.feedback.correct {
  color: var(--correct);
}

.feedback.wrong {
  color: var(--wrong);
}

.actions {
  display: flex;
  gap: 0.65rem;
  align-items: center;
}

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-weight: 700;
  font-family: var(--font-ui);
  cursor: pointer;
}

.btn.secondary {
  background: #6b7280;
}

.btn.danger {
  margin-left: auto;
  background: #c2410c;
}

.btn.danger:disabled {
  opacity: 1;
  background: #9a3412;
  filter: saturate(0.45) brightness(0.85);
  cursor: not-allowed;
}

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

#scoreBreakdown {
  margin: 1rem 0;
}

#scoreBreakdown ul {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
}

#scoreBreakdown table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.85rem;
  font-size: 0.95rem;
}

#scoreBreakdown th,
#scoreBreakdown td {
  border: 1px solid var(--border);
  padding: 0.45rem;
  text-align: left;
  vertical-align: top;
}


#scoreBreakdown .metric-correct {
  color: var(--correct);
  font-weight: 700;
}

#scoreBreakdown .metric-wrong {
  color: var(--wrong);
  font-weight: 700;
}

#scoreBreakdown .metric-skipped {
  color: var(--muted);
  font-weight: 700;
}

#scoreBreakdown tr.row-incorrect {
  background: #fde9e9;
}

#scoreBreakdown tr.row-correct {
  background: #eaf9ea;
}

#scoreBreakdown tr.row-skipped {
  background: #f3f4f6;
}

.error {
  color: var(--wrong);
  font-weight: 700;
}

.hidden {
  display: none;
}

@media (max-width: 680px) {
  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .actions {
    flex-direction: row;
    align-items: center;
  }
}