:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --correct: #16a34a;
  --wrong: #dc2626;
  --accent: #2563eb;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at top, #eef4ff, var(--bg));
  color: var(--text);
}

.app {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.card {
  width: min(1000px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.badge {
  color: var(--muted);
  background: #f1f5f9;
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
}

.map-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #fbfdff;
}

svg {
  width: 100%;
  height: auto;
  display: block;
}

.legend {
  margin: 0.5rem 0 1rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.legend-bar {
  height: 10px;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
}

.question {
  font-size: 1.15rem;
  font-weight: 650;
  margin: 0.75rem 0;
}

.options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.option {
  border: 1px solid var(--border);
  background: #fff;
  padding: 0.7rem;
  border-radius: 10px;
  text-align: left;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease;
}

.option:hover:enabled {
  transform: translateY(-1px);
  border-color: #93c5fd;
}

.option.selected {
  border-color: var(--accent);
  background: #eff6ff;
}

.option.correct {
  border-color: var(--correct);
  background: #f0fdf4;
}

.option.incorrect {
  border-color: var(--wrong);
  background: #fef2f2;
}

.feedback {
  margin-top: 0.8rem;
  padding: 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.feedback.correct {
  border-color: #86efac;
  background: #f0fdf4;
}

.feedback.incorrect {
  border-color: #fca5a5;
  background: #fef2f2;
}

.actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  font-weight: 600;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
}

.btn.secondary {
  background: #e2e8f0;
  color: #0f172a;
}

.tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(2, 6, 23, 0.9);
  color: white;
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  font-size: 0.8rem;
  transform: translate(12px, -8px);
  white-space: nowrap;
}

@media (max-width: 700px) {
  .options {
    grid-template-columns: 1fr;
  }
}