* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: #f3f6f7;
  color: #1d2d32;
}

.app {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #f3f6f7;
  padding: 8px 0;
}

h1 {
  margin: 6px 0;
  font-size: 2.2rem;
}


.ghost {
  border: 1px solid #aac0c8;
  background: transparent;
  color: #1d2d32;
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.ghost:hover {
  background: #e7eff2;
}

.status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #e4ecef;
  padding-top: 10px;
}

.score span {
  display: block;
  font-size: 0.85rem;
  color: #4b6a74;
}

.score strong {
  font-size: 1.6rem;
}

.hearts span {
  font-size: 1.4rem;
  margin-left: 4px;
  opacity: 0.35;
  transition: opacity 0.2s ease;
}

.hearts span.active {
  opacity: 1;
}


.filters {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 10px;
}

.filters label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: #4b6a74;
  font-weight: 600;
}

.filters select {
  border: 1px solid #c9d7dd;
  border-radius: 10px;
  background: #f8fbfc;
  color: #1d2d32;
  padding: 8px 10px;
  font-size: 0.95rem;
}

.filters select:focus {
  outline: 2px solid #7aa5b4;
  outline-offset: 1px;
}

.card {
  background: #ffffff;
  padding: 28px;
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(15, 39, 46, 0.08);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.round-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #e4ecef;
  padding-top: 8px;
}


.answers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 560px) {
  .status {
    flex-wrap: wrap;
  }

  .filters {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .answers {
    grid-template-columns: 1fr;
  }

  .round-controls {
    flex-wrap: wrap;
  }

  .status {
    flex-direction: column;
    align-items: flex-start;
  }

  .filters {
    margin-left: 0;
  }
}

.answer {
  border: 1px solid #c9d7dd;
  border-radius: 14px;
  padding: 14px 16px;
  background: #f8fbfc;
  cursor: pointer;
  font-size: 1rem;
  text-align: left;
  min-height: 64px;
  display: flex;
  align-items: center;
  transition: transform 0.15s ease, border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.answer:hover:not([disabled]) {
  transform: translateY(-2px);
  border-color: #7aa5b4;
  box-shadow: 0 6px 18px rgba(15, 39, 46, 0.08);
}

.answer.correct {
  border-color: #2f9a62;
  background: #eaf8f1;
  color: #1f6d46;
}

.answer.wrong {
  border-color: #d56b6b;
  background: #fdecec;
  color: #a02c2c;
}

.answer:disabled {
  cursor: not-allowed;
}

.feedback {
  margin: 0;
  font-weight: 600;
  min-height: 24px;
}

.game-over {
  color: #a02c2c;
}

.instructions {
  border-top: 1px solid #e4ecef;
  padding-top: 10px;
  color: #37535c;
}

.instructions p {
  margin: 0;
}