/* ============ 主题变量 ============ */
:root {
  --bg: #f3f5f9;
  --card-bg: #ffffff;
  --card-hover: #f7f9ff;
  --text: #2b3445;
  --text-sub: #8a93a6;
  --border: #e6e9f0;
  --primary: #4f7cff;
  --primary-hover: #3b66e8;
  --shadow: 0 2px 10px rgba(31, 45, 82, 0.06);
  --shadow-lg: 0 8px 30px rgba(31, 45, 82, 0.14);
  --mask: rgba(20, 28, 48, 0.45);
  --danger: #e5484d;
  --input-bg: #ffffff;
}

html[data-theme="dark"] {
  --bg: #141821;
  --card-bg: #1e2531;
  --card-hover: #262f3f;
  --text: #e7ebf3;
  --text-sub: #8b96ab;
  --border: #2d3646;
  --primary: #6d94ff;
  --primary-hover: #82a5ff;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
  --mask: rgba(0, 0, 0, 0.6);
  --input-bg: #141821;
}

/* ============ 基础 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

.hidden { display: none !important; }

.btn {
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }

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

.danger-btn { color: var(--danger); border-color: var(--danger); }
.danger-btn:hover { background: var(--danger); color: #fff; }

.icon-btn {
  width: 38px;
  height: 38px;
  padding: 0;
  font-size: 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn.active { border-color: var(--primary); color: var(--primary); box-shadow: 0 0 0 2px var(--primary); }

/* ============ 头部 ============ */
.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 16px 20px 28px;
  transition: background 0.3s;
}

.header-bar {
  max-width: 1180px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo { font-size: 22px; font-weight: 700; letter-spacing: 1px; }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-actions { display: flex; gap: 10px; }

/* 搜索区 */
.search-area { max-width: 720px; margin: 0 auto; text-align: center; }

.search-box {
  display: flex;
  align-items: center;
  background: var(--input-bg);
  border: 2px solid var(--border);
  border-radius: 40px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 124, 255, 0.15);
}

.engine-select {
  position: relative;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  color: var(--text-sub);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.engine-select:hover { color: var(--primary); }
.caret { font-size: 10px; }

.engine-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 120px;
  display: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: 6px;
  z-index: 50;
  max-height: 320px;
  overflow-y: auto;
}
.engine-menu li {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}
.engine-menu li:hover { background: var(--card-hover); color: var(--primary); }
.engine-menu li.active { color: var(--primary); font-weight: 600; }
.engine-select.open .engine-menu { display: block; }

#searchInput {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
  padding: 12px 4px;
  min-width: 0;
}
#searchInput::placeholder { color: var(--text-sub); }

#searchBtn {
  margin-right: 8px;
  border-radius: 30px;
  padding: 9px 22px;
  border: none;
}

.quick-engines {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.quick-engines .chip {
  font-size: 13px;
  color: var(--text-sub);
  background: transparent;
  border: 1px solid transparent;
  padding: 4px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
}
.quick-engines .chip:hover { color: var(--primary); border-color: var(--primary); }
.quick-engines .chip.active { color: var(--primary); border-color: var(--primary); background: rgba(79, 124, 255, 0.08); }

.today { font-size: 13px; color: var(--text-sub); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ============ 分类与链接 ============ */
#main { max-width: 1180px; margin: 24px auto 40px; padding: 0 20px; }
.main-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
}
.main-cols { min-width: 0; }

.category { margin-bottom: 30px; }

.category-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.category-head h2 {
  font-size: 17px;
  font-weight: 700;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  line-height: 1.2;
}
.cat-actions { display: flex; gap: 8px; margin-left: auto; }
.cat-actions .btn { padding: 4px 10px; font-size: 12px; }

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(172px, 1fr));
  gap: 12px;
}

.link-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.link-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  background: var(--card-hover);
}

.link-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.link-info { overflow: hidden; }
.link-name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.link-desc {
  font-size: 12px;
  color: var(--text-sub);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 编辑模式下的卡片按钮 */
.link-ops {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: 4px;
}
.link-ops button {
  width: 22px;
  height: 22px;
  font-size: 12px;
  line-height: 1;
  padding: 0;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-sub);
  cursor: pointer;
}
.link-ops button:hover { color: var(--primary); border-color: var(--primary); }
.link-ops button.del:hover { color: var(--danger); border-color: var(--danger); }

/* ============ 右侧资讯栏（热点资讯 + 热搜榜单） ============ */
.side-col {
  position: sticky;
  top: 12px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.news-section .category-head { margin-bottom: 10px; }
.news-section h2 { font-size: 15px; }
.news-list {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px 4px;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.news-item:not(a) { cursor: default; }
.news-item:hover { background: var(--card-hover); color: var(--primary); }
.news-rank {
  min-width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--card-hover);
  color: var(--text-sub);
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.news-rank.top { background: var(--primary); color: #fff; }
.news-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* 侧栏空间有限：隐藏单条来源，标题栏保留「来源 更新于」即可 */
.news-source { display: none; }
.news-source-tag { font-size: 12px; color: var(--text-sub); }
.news-refresh { padding: 3px 8px; font-size: 12px; }
.news-refresh.loading { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.news-loading { padding: 18px; text-align: center; color: var(--text-sub); font-size: 13px; }
.hot-tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.hot-tab {
  flex: 1;
  padding: 6px 0;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.2s;
}
.hot-tab:hover { color: var(--primary); border-color: var(--primary); }
.hot-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.news-hot { font-size: 12px; color: var(--text-sub); white-space: nowrap; }
.news-tip {
  margin-top: 6px;
  padding: 8px 10px 4px;
  border-top: 1px dashed var(--border);
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.5;
}

@media (max-width: 960px) {
  .main-layout { grid-template-columns: 1fr; }
  .side-col { position: static; }
}

/* ============ 页脚 ============ */
.footer {
  text-align: center;
  padding: 24px 20px 30px;
  color: var(--text-sub);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed;
  inset: 0;
  background: var(--mask);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  padding: 22px;
  animation: pop 0.18s ease-out;
}
@keyframes pop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 18px; }

.field { display: block; margin-bottom: 14px; }
.field span {
  display: block;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 6px;
}
.field input,
.field select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.field input:focus,
.field select:focus { border-color: var(--primary); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}
.setting-actions { display: flex; gap: 10px; margin-top: 4px; }

/* ============ 轻提示 ============ */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  animation: fadeUp 0.25s ease-out;
  max-width: 80vw;
}
@keyframes fadeUp {
  from { transform: translate(-50%, 10px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

/* ============ 响应式 ============ */
@media (max-width: 640px) {
  .logo { font-size: 18px; }
  .link-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  #searchBtn { padding: 9px 14px; }
  .quick-engines .chip { font-size: 12px; padding: 3px 8px; }
}