/* ============================================================
   点读主页专属样式（依赖 theme.css 的令牌）
   品牌色来自 html[data-theme] 的 --pg-*，页面自身不绑色相
   ============================================================ */

/* ===== 搜索栏（全库搜索，独占一行贴在 tab 下面） ===== */
.search-bar {
  display: flex;
  align-items: center;
  gap: 9px;
  background: #FFFFFF;
  border: 1px solid var(--border-field);
  border-radius: var(--radius-pill);
  padding: 0 8px 0 16px;
  margin-bottom: 10px;
  box-shadow: 0 4px 14px rgba(93, 76, 130, 0.09);
  transition: 0.2s;
}
.search-bar:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(74, 159, 234, 0.18);
}
.search-bar .icon { font-size: 17px; opacity: 0.55; flex-shrink: 0; }
.search-bar input {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  border: none;
  background: transparent;
  padding: 12px 2px;
  font-size: 15px;
  outline: none;
  color: var(--text-primary);
}
.search-bar .scope {
  flex-shrink: 0;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--pg-ink);
  background: var(--pg-soft);
  border: 1px solid var(--pg-soft2);
  border-radius: 999px;
  padding: 3px 11px;
  white-space: nowrap;
}
.search-bar .clear {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: 0.16s;
}
.search-bar .clear:hover { background: var(--pg-soft2); color: var(--pg-ink); }
.search-bar .clear[hidden] { display: none; }

/* ===== 筛选选框行（宽度自适应，行尾空白自动补齐） ===== */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 12px 16px;
  border-radius: var(--radius-card);
  box-shadow: 0 6px 20px rgba(93, 76, 130, 0.12);
  margin-bottom: 12px;
  border: 1px solid var(--pg-soft2);
}

/* ===== 统计栏 ===== */
.stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.stats span {
  background: #FFFFFF;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  border: 1px solid var(--border-soft);
  white-space: nowrap;
}
.stats #unitLabel { color: var(--pg-ink); border-color: var(--pg-soft2); background: var(--pg-soft); }

/* ===== 单元标题 ===== */
.unit-section { margin-bottom: 20px; }
.unit-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 17px;
  padding: 8px 6px 10px;
  color: var(--text-primary);
}
.unit-heading .unit-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
/* 难度徽标：一级（3~4 年级）/ 二级（5~6 年级），依据 2022 版课标 */
.unit-heading .unit-level {
  flex-shrink: 0;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
  padding: 2px 9px;
  border-radius: 999px;
  color: var(--pg-ink);
  background: var(--pg-soft2);
}
.unit-heading .unit-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--pg-ink);
  background: var(--pg-soft);
  border: 1px solid var(--pg-soft2);
  padding: 2px 12px;
  border-radius: 20px;
}

/* ===== 单词卡片 ===== */
.word-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 480px)  { .word-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 768px)  { .word-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1100px) { .word-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1400px) { .word-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; } }
@media (min-width: 1700px) { .word-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); } }

.word-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border-radius: 18px;
  padding: 16px 18px 18px;
  box-shadow: 0 2px 10px rgba(93, 76, 130, 0.10);
  border: 1px solid var(--border-soft);
  transition: 0.15s;
  cursor: pointer;
  color: var(--text-primary);
}
.word-card:hover {
  background: var(--pg-soft);
  border-color: var(--pg-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--pg-shadow-soft);
}
.word-card:active { transform: scale(0.97); }
.word-card:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 2px; }
.word-card .word {
  font-size: 22px;
  font-weight: 700;
  color: var(--word-ink);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-right: 52px;
}
.word-card .phonetic {
  font-size: 15px;
  color: var(--text-secondary);
  font-family: 'Times New Roman', serif;
  margin-top: 2px;
}
.word-card .meaning {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.4;
  padding-right: 52px;
}
.word-card .play-icon {
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  border-radius: 50%;
  background: var(--pg-soft);
  border: 1px solid var(--pg-soft2);
  cursor: pointer;
  transition: 0.2s;
  color: var(--pg-ink);
  box-shadow: 0 2px 6px rgba(93, 76, 130, 0.12);
}
.word-card:hover .play-icon { color: var(--pg-accent); }
.word-card.playing {
  background: var(--pg-soft);
  border-color: var(--pg-accent);
  box-shadow: 0 0 0 2px var(--pg-shadow-soft);
}
.word-card.playing .play-icon { color: var(--pg-accent); animation: pulse 0.8s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.15); } }

.word-card.favorited {
  background: #FFF9EC;
  border-left: 5px solid var(--pg-accent);
  border-color: var(--pg-soft2);
  box-shadow: 0 0 0 1px var(--pg-soft2);
}
.word-card .fav-btn {
  position: absolute;
  right: 8px;
  top: 6px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.55;
  transition: 0.2s;
  color: var(--text-secondary);
  line-height: 1;
  padding: 0;
}
.word-card .fav-btn:hover { opacity: 1; transform: scale(1.15); }
.word-card .fav-btn.active { opacity: 1; color: var(--pg-accent); text-shadow: 0 0 8px var(--pg-shadow-soft); }

/* 全库搜索命中的卡片：底部标出来源，点一下直接跳到那一册/那个分类 */
.word-src {
  align-self: flex-start;
  margin-top: 9px;
  padding: 3px 11px;
  border: 1px dashed var(--pg-soft2);
  border-radius: 999px;
  background: var(--pg-soft);
  color: var(--pg-ink);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.16s;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.word-src:hover { border-style: solid; border-color: var(--pg-accent); background: var(--pg-soft2); }
.word-src::before { content: "📍 "; }

/* ===== 空状态 ===== */
.no-result { text-align: center; padding: 40px 16px; color: var(--text-secondary); font-size: 18px; line-height: 1.9; }
.no-result .emoji { font-size: 48px; display: block; margin-bottom: 12px; }
.no-result .empty-tip { font-size: 14px; color: var(--text-secondary); }

/* ===== 响应式 ===== */
/* 手机端：选框组保持一行流式换行——放得下就一行，放不下才折行，
   每条都按自己的文案宽度撑开，配合 flex-grow 把整行铺满 */
@media (max-width: 640px) {
  .controls { gap: 6px; padding: 10px 10px; }
  .search-bar { padding: 0 6px 0 13px; gap: 7px; }
  .search-bar input { padding: 11px 2px; font-size: 14.5px; }
  .search-bar .scope { font-size: 11.5px; padding: 2px 9px; }
  .stats { font-size: 12.5px; }
  .stats span { padding: 3px 13px; }
  .word-card .word { font-size: 19px; }
  .word-card .meaning { padding-right: 46px; }
  .word-card .fav-btn { width: 40px; height: 40px; font-size: 22px; }
  .word-card .play-icon { width: 40px; height: 40px; font-size: 18px; }
}
/* 窄屏放不下「全库 943 词」这个胶囊时先把它收起来，别挤压输入框 */
@media (max-width: 470px) {
  .search-bar .scope { display: none; }
}
@media (max-width: 380px) {
  .word-card { padding: 14px 15px 16px; }
  .word-card .word { font-size: 18px; }
}