/* ============ 全局重置与基础样式 ============ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", 
               "Yu Gothic", sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
  color: #2c3e50;
  line-height: 1.6;
  padding: 24px;
  min-height: 100vh;
}

/* ============ 容器与标题 ============ */
body > div:first-child {
  max-width: 900px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

label {
  font-weight: 500;
  color: #4a5568;
  font-size: 0.95rem;
}

#unit-select {
  padding: 8px 16px;
  border: 2px solid #cbd5e0;
  border-radius: 8px;
  background: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 150px;
}

#unit-select:hover,
#unit-select:focus {
  border-color: #4299e1;
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
  outline: none;
}

h1 {
  text-align: center;
  margin: 12px auto 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid #4299e1;
  color: #1a202c;
  font-size: 1.8rem;
  font-weight: 700;
  max-width: 900px;
}

/* ============ 单词表格区域 ============ */
.word-table {
  max-width: 900px;
  margin: 0 auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* 表头（可选添加） */
.word-table::before {
  content: "";
  display: grid;
  grid-template-columns: 2fr 3fr 3fr;
  padding: 10px 8px;
  font-weight: 600;
  color: #4a5568;
  background: #edf2f7;
  border-radius: 8px 8px 0 0;
  margin-bottom: 4px;
}
.word-table::before {
  content: "假名 · 読み方";
  /* 如需完整表头，建议在HTML中添加 .table-header 元素 */
}

/* 每一行 */
.word-row {
  display: grid;
  grid-template-columns: 2fr 3fr 3fr;
  padding: 12px 8px;
  border-radius: 8px;
  transition: all 0.15s ease;
  align-items: center;
}

.word-row:hover {
  background: linear-gradient(90deg, #ebf8ff 0%, #fff 100%);
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(66, 153, 225, 0.15);
}

.word-row:nth-child(even) {
  background: #fafbfc;
}
.word-row:nth-child(even):hover {
  background: #ebf8ff;
}

/* 单元格通用样式 */
.cell {
  padding: 6px 12px;
  word-break: break-word;
  white-space: normal;
  font-size: 1.05rem;
}

/* 假名 - 灰色柔和 */
.gana {
  color: #4a5568;
  font-family: "Hiragino Kaku Gothic Pro", "Noto Sans JP", sans-serif;
  font-size: 1.1rem;
}

/* 汉字 - 加粗突出 */
.kanji {
  font-weight: 700;
  text-align: center;
  color: #1a202c;
  font-size: 1.2rem;
  letter-spacing: 0.5px;
}

/* 释义 - 主内容区 */
.explanation {
  color: #2d3748;
  padding-left: 16px;
  border-left: 2px solid #e2e8f0;
  font-size: 1rem;
  line-height: 1.5;
}

/* ============ 分页控制区 ============ */
.pagination {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 16px;
}

.pagination button {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(135deg, #4299e1, #3182ce);
  color: white;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(66, 153, 225, 0.4);
}

.pagination button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(66, 153, 225, 0.6);
  background: linear-gradient(135deg, #3182ce, #2c5282);
}

.pagination button:active:not(:disabled) {
  transform: translateY(0);
}

.pagination button:disabled {
  background: #cbd5e0;
  color: #718096;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* 导出按钮 - 突出显示 */
#export {
  background: linear-gradient(135deg, #48bb78, #38a169) !important;
  box-shadow: 0 2px 6px rgba(72, 187, 120, 0.4) !important;
}

#export:hover:not(:disabled) {
  background: linear-gradient(135deg, #38a169, #2f855a) !important;
  box-shadow: 0 4px 12px rgba(72, 187, 120, 0.6) !important;
}

/* 页码信息 */
#page-info {
  font-weight: 500;
  color: #4a5568;
  font-size: 1rem;
  min-width: 100px;
  text-align: center;
  padding: 4px 12px;
  background: #edf2f7;
  border-radius: 6px;
}

/* ============ 响应式适配 ============ */
@media (max-width: 768px) {
  body {
    padding: 16px;
  }
  
  .word-table {
    padding: 12px;
  }
  
  .word-row {
    grid-template-columns: 1fr 1.2fr 1.8fr;
    padding: 10px 6px;
    font-size: 0.95rem;
  }
  
  .cell {
    padding: 4px 8px;
    font-size: 0.95rem;
  }
  
  .kanji {
    font-size: 1.1rem;
  }
  
  .explanation {
    padding-left: 12px;
    font-size: 0.95rem;
  }
  
  .pagination {
    gap: 10px;
  }
  
  .pagination button {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
  
  h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .word-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px;
    border-bottom: 1px solid #e2e8f0;
  }
  
  .gana::before {
    content: "🔹 读音: ";
    color: #718096;
    font-size: 0.9rem;
  }
  
  .kanji::before {
    content: "🔹 单词: ";
    color: #718096;
    font-size: 0.9rem;
  }
  
  .explanation {
    border-left: none;
    padding-left: 0;
    padding-top: 4px;
    border-top: 1px dashed #e2e8f0;
  }
  
  .explanation::before {
    content: "🔹 释义: ";
    color: #718096;
    font-size: 0.9rem;
  }
}

/* ============ 打印优化（导出PNG时更清晰） ============ */
@media print {
  body {
    background: #fff;
    padding: 0;
  }
  .pagination, body > div:first-child {
    display: none;
  }
  .word-table {
    box-shadow: none;
    border-radius: 0;
  }
}

/* ============ 辅助动画 ============ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.word-row {
  animation: fadeIn 0.2s ease forwards;
}

.word-row:nth-child(1) { animation-delay: 0.02s; }
.word-row:nth-child(2) { animation-delay: 0.04s; }
.word-row:nth-child(3) { animation-delay: 0.06s; }
.word-row:nth-child(4) { animation-delay: 0.08s; }
.word-row:nth-child(5) { animation-delay: 0.10s; }
/* 可扩展更多... */

.disable-animation,
.disable-animation * {
  animation: none !important;
  transition: none !important;
  transform: none !important;
  opacity: 1 !important;  /* 强制完全不透明 */
}

/* ============ 显示模式切换按钮 ============ */
.display-mode-toggle {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 16px auto 24px;
  max-width: 900px;
  flex-wrap: wrap;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 2px solid #cbd5e0;
  border-radius: 8px;
  background: #fff;
  color: #4a5568;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-btn:hover {
  border-color: #4299e1;
  color: #4299e1;
  background: #ebf8ff;
}

.mode-btn.active {
  border-color: #4299e1;
  background: linear-gradient(135deg, #4299e1, #3182ce);
  color: #fff;
  box-shadow: 0 2px 8px rgba(66, 153, 225, 0.4);
}

.mode-btn span {
  font-size: 1.1rem;
}

/* ============ 显示模式控制 ============ */

.display-mode-toggle {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 16px auto 24px;
}

.mode-btn {
  padding: 8px 16px;
  border: 2px solid #cbd5e0;
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-btn:hover {
  border-color: #4299e1;
  color: #4299e1;
}

.mode-btn.active {
  border-color: #4299e1;
  background: #4299e1;
  color: #fff;
}

/* ============ 显示模式控制（淡化版）=========== */

/* 🔤 仅假名模式：汉字和释义变淡 */
.word-table.mode-only-gana .kanji,
.word-table.mode-only-gana .explanation {
  opacity: 0.1;
}

.word-table.mode-only-gana .gana {
  opacity: 1;
  font-weight: 700;
}

/* 📝 仅释义模式：假名和汉字变淡 */
.word-table.mode-only-explanation .gana,
.word-table.mode-only-explanation .kanji {
  opacity: 0.1;
}

.word-table.mode-only-explanation .explanation {
  opacity: 1;
  font-weight: 600;
}