/* ============================================================
   找不同模組 — 列印專用樣式
   螢幕模式用 px，列印模式用 mm/pt
   ============================================================ */

/* ----------------------------------------------------------
   螢幕模式
   ---------------------------------------------------------- */

.find-diff-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 8px 0;
}

.find-diff-questions {
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex: 1;
}

.find-diff-question {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.find-diff-question-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.find-diff-question-num {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  flex-shrink: 0;
}

.find-diff-question-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

/* 一排 4 張卡片 */
.find-diff-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.find-diff-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
  max-width: 120px;
}

.find-diff-card-label {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-500, #6B7280);
}

.find-diff-card-img-wrap {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-gray-200, #E5E7EB);
  border-radius: 12px;
  padding: 8px;
  background: var(--color-gray-50, #F9FAFB);
}

.find-diff-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ----------------------------------------------------------
   互動模式（Soft Pastel）
   ---------------------------------------------------------- */

.fd-question-area {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-md);
}

.fd-question-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-text);
  text-align: center;
}

.fd-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  width: 100%;
  max-width: 420px;
}

.fd-card {
  aspect-ratio: 1;
  background: var(--color-white);
  border: 4px solid var(--color-gray-200);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 200ms ease-out, border-color 200ms;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  padding: var(--space-md);
  min-height: 100px;
}

.fd-card:active {
  transform: scale(0.95);
}

.fd-card img {
  width: 80%;
  height: 80%;
  object-fit: contain;
  pointer-events: none;
}

.fd-card .fd-card-emoji {
  font-size: 56px;
  line-height: 1;
  pointer-events: none;
}

.fd-card.correct {
  border-color: var(--color-cta);
  background: #DCFCE7;
  animation: gameBounce 500ms ease-out;
}

.fd-card.wrong {
  animation: gameShake 300ms ease-out;
}

.fd-card.disabled {
  pointer-events: none;
  opacity: 0.6;
}

/* ----------------------------------------------------------
   列印模式
   ---------------------------------------------------------- */
@media print {
  .find-diff-content {
    padding: 2mm 0;
  }

  .find-diff-questions {
    gap: 6mm;
  }

  .find-diff-question {
    gap: 2mm;
  }

  .find-diff-question-num {
    font-size: 13pt;
  }

  .find-diff-question-text {
    font-size: 12pt;
  }

  .find-diff-row {
    gap: 4mm;
  }

  .find-diff-card {
    max-width: 35mm;
  }

  .find-diff-card-label {
    font-size: 11pt;
  }

  .find-diff-card-img-wrap {
    width: 22mm;
    height: 22mm;
    border: 0.5pt solid #D1D5DB;
    border-radius: 3mm;
    padding: 2mm;
  }
}