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/* 背单词 App 的页面样式：首页、学新词、抽测、词书。做题卷面仍走 paper.css */

.app { max-width: 720px; margin: 0 auto; padding: 14px 16px 90px;
  font-family: system-ui, "Microsoft YaHei", sans-serif; font-size: 14px; }
.app.wide { max-width: 1040px; }
.app h2 { font-size: 17px; margin: 30px 0 12px; display: flex; align-items: center; gap: 8px; }
.app h2::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: var(--accent); }
.top-grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: 14px; align-items: stretch; }
.side-stats { display: flex; flex-direction: column; gap: 10px; }
.stat-row.two { grid-template-columns: repeat(2, 1fr); margin-top: 0; flex: 1; }
.stat-row.two div { display: flex; flex-direction: column; justify-content: center; }
.days-wrap { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.days-title { font-size: 12px; color: var(--ink-soft); margin-bottom: 8px; display: flex; justify-content: space-between; }
.days-title span { color: #4a7a3d; }
.days-wrap .days { margin-top: 0; }
.app h2 .more { margin-left: auto; font-size: 13px; font-weight: 400; color: var(--accent); text-decoration: none; }
.app .muted { color: var(--ink-soft); }

/* 首页顶部：当前词书 + 今日任务 */
.hero-card {
  background: linear-gradient(135deg, #1b5e97, #2f7fc0); color: #fff; border-radius: 14px;
  padding: 18px 20px; box-shadow: 0 6px 20px rgba(27, 94, 151, .25);
}
.hero-card .bk { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.hero-card .bk b { font-size: 19px; }
.hero-card .bk a { color: #dbe9f6; font-size: 12px; text-decoration: none; margin-left: auto; }
.hero-card .pbar { height: 6px; background: rgba(255, 255, 255, .25); border-radius: 3px; margin: 12px 0 6px; overflow: hidden; }
.hero-card .pbar i { display: block; height: 100%; background: #ffd66b; border-radius: 3px; }
.hero-card .pmeta { font-size: 12px; color: #dbe9f6; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-card .tasks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 16px; }
.hero-card .task {
  background: rgba(255, 255, 255, .14); border-radius: 10px; padding: 10px 8px; text-align: center;
  color: #fff; text-decoration: none; transition: background .15s;
}
.hero-card .task:hover { background: rgba(255, 255, 255, .24); }
.hero-card .task b { display: block; font: 700 24px/1.2 system-ui, sans-serif; font-variant-numeric: tabular-nums; }
.hero-card .task span { font-size: 12px; color: #e6f0f8; }
.hero-card .task small { display: block; font-size: 11px; color: #cfe0ef; margin-top: 2px; }
.hero-card .task.done { opacity: .7; }

/* 统计条 */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.stat-row div { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 6px; text-align: center; }
.stat-row b { display: block; font: 700 22px/1.2 system-ui, sans-serif; font-variant-numeric: tabular-nums; color: var(--accent); }
.stat-row span { font-size: 11.5px; color: var(--ink-soft); }
.stat-row .fire b { color: #d9772b; }

/* 打卡热力条：最近 14 天 */
.days { display: flex; gap: 4px; margin-top: 10px; }
.days i { flex: 1; aspect-ratio: 1; max-height: 28px; border-radius: 5px; background: #eeece5; position: relative; }
.days i.on { background: #8dc97f; }
.days i.today { box-shadow: inset 0 0 0 2px var(--accent); }
.days i[data-n]::after {
  content: attr(data-n); position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: #fff;
}

/* 词书网格 */
.books { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.book {
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px; cursor: pointer;
  position: relative; transition: border-color .15s, transform .15s, box-shadow .15s;
}
.book:hover { border-color: #b9d0e4; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(27, 94, 151, .10); }
.book .hd { display: flex; align-items: center; gap: 10px; }
.book.cur .hd { padding-right: 44px; }   /* 给右上角的「当前」角标让位 */
.book .ico {
  flex: none; width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font: 700 12px/1 system-ui, sans-serif; font-style: normal; color: #fff; letter-spacing: .5px;
}
.book .ico.c0 { background: linear-gradient(135deg, #5b8def, #3f6fd8); }
.book .ico.c1 { background: linear-gradient(135deg, #f0a35e, #e07b39); }
.book .ico.c2 { background: linear-gradient(135deg, #2f7fc0, #1b5e97); }
.book .ico.c3 { background: linear-gradient(135deg, #8e6fd8, #6a4bc4); }
.book .ico.c4 { background: linear-gradient(135deg, #3fb6a8, #2a8f83); }
.book .ico.c5 { background: linear-gradient(135deg, #d9576b, #b83a50); }
.book.tb { padding: 12px; }
.book.tb .nm { font-size: 13.5px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.book.tb .hd { padding-right: 34px; }
.book.tb .bar { margin-top: 10px; }
.book.tb .ico { width: 34px; height: 34px; font-size: 11.5px; }
.book.cur { border-color: var(--accent); box-shadow: 0 0 0 2px #dbe9f6; }
.book .nm { font-weight: 700; font-size: 15px; }
.book .ds { font-size: 12px; color: var(--ink-soft); margin: 8px 0 8px; line-height: 1.6; min-height: 2.6em; }
.book .bar { height: 5px; background: #ecebe4; border-radius: 3px; overflow: hidden; }
.book .bar i { display: block; height: 100%; background: var(--accent); }
.book .ft { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2px 8px; font-size: 11.5px; color: var(--ink-soft); margin-top: 6px; }
.book .ft span { white-space: nowrap; }
.hide-sm { }
.book .cur-tag { position: absolute; top: 10px; right: 10px; font-size: 11px; color: #fff; background: var(--accent); border-radius: 10px; padding: 2px 8px; }
.book .acts { display: flex; gap: 6px; margin-top: 10px; }

/* 题库卡片（首页复用 index 旧样式） */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.card-link { display: block; padding: 14px 16px; background: #fff; text-decoration: none; color: inherit;
  border: 1px solid var(--line); border-radius: 14px; transition: transform .15s, box-shadow .15s; }
.card-link:hover { border-color: #b9d0e4; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(27, 94, 151, .10); }
.card-link h3 { margin: 0 0 4px; font-size: 15px; color: var(--accent); }
.card-link p { margin: 0; font-size: 12px; line-height: 1.7; color: var(--ink-soft); }

/* 功能说明折叠 */
details.about { margin-top: 26px; font-size: 13px; color: var(--ink-soft); line-height: 1.9; }
details.about summary { cursor: pointer; color: var(--ink); font-weight: 600; }
details.about li { margin: 4px 0; }

/* ---------- 学新词 / 抽测 卡片 ---------- */
.panel { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.prog { height: 5px; background: var(--line); border-radius: 3px; margin-bottom: 16px; overflow: hidden; }
.prog i { display: block; height: 100%; background: var(--accent); transition: width .2s; }
.wcard { text-align: center; padding: 6px 0 14px; }
.wcard .w { font: 700 34px/1.2 Georgia, "Times New Roman", serif; letter-spacing: .3px; }
.wcard .w.cn { font: 600 22px/1.5 system-ui, "Microsoft YaHei", sans-serif; }
.wcard .ph { color: var(--ink-soft); font-size: 15px; margin-top: 6px; }
.wcard .row { display: flex; justify-content: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; align-items: center; }
.wcard .ex { margin: 12px auto 0; max-width: 560px; font: 15px/1.7 Georgia, serif; color: #333; }
.wcard .ex b { color: var(--accent); }
.wcard .ex.blur { filter: blur(5px); user-select: none; }
.opts4 { display: grid; gap: 8px; }
.opts4 .o {
  display: flex; align-items: baseline; gap: 10px; padding: 12px 14px; background: #fff;
  border: 1px solid var(--line); border-radius: 10px; cursor: pointer; font-size: 15px;
}
.opts4 .o .k { font-weight: 700; color: var(--ink-soft); min-width: 1.2em; }
.opts4 .o:hover { background: #f7f5ef; }
.opts4.done .o { cursor: default; }
.opts4 .o.right { background: #e6f4ea; border-color: var(--ok); }
.opts4 .o.wrong { background: #fbe9e7; border-color: var(--bad); }
.opts4 .o.dim { opacity: .55; }
input.spell { width: 100%; padding: 12px 14px; font-size: 20px; text-align: center; border: 1px solid var(--line);
  border-radius: 10px; font-family: Georgia, serif; }
input.spell.right { border-color: var(--ok); background: #e6f4ea; }
input.spell.wrong { border-color: var(--bad); background: #fbe9e7; }
.reveal { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.reveal .tr { white-space: pre-wrap; line-height: 1.75; }
.reveal .verdict { font-weight: 700; margin-bottom: 6px; }
.reveal .verdict.ok { color: var(--ok); } .reveal .verdict.no { color: var(--bad); }
.reveal .act { display: flex; gap: 8px; margin-top: 12px; align-items: center; flex-wrap: wrap; }
.reveal .act .sp { flex: 1; }
.tools { display: flex; gap: 8px; justify-content: center; margin-top: 12px; flex-wrap: wrap; }
.btn.big { padding: 11px 18px; font-size: 15px; }
.btn.w100 { width: 100%; text-align: center; }
.kbd { text-align: center; font-size: 12px; color: var(--ink-soft); margin-top: 12px; }
.summary { text-align: center; padding: 10px 0; }
.summary .big { font: 700 44px/1.1 system-ui, sans-serif; font-variant-numeric: tabular-nums; color: var(--accent); }
.summary .sub { color: var(--ink-soft); margin-top: 6px; }
.wlist { margin-top: 12px; }
.wlist .r { display: flex; gap: 10px; align-items: baseline; padding: 8px 4px; border-bottom: 1px solid var(--line); }
.wlist .r .w { font-weight: 700; min-width: 7em; }
.wlist .r .t { color: var(--ink-soft); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wlist .r.bad .w { color: var(--bad); }

/* 抽测/学习设置 */
.opt-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.opt-row label { color: var(--ink-soft); min-width: 4.5em; }
.seg .btn.primary { pointer-events: none; }

/* ---------- 词书详情：单词列表 ---------- */
.wl-tools { display: flex; gap: 8px; margin: 12px 0; flex-wrap: wrap; align-items: center; }
.wl-tools input { flex: 1; min-width: 160px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }
.wl { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.wl .r { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.wl .r:last-child { border-bottom: 0; }
.wl .r .no { color: #b9b3a4; font-size: 11px; min-width: 2.6em; text-align: right; }
.wl .r .w { font-weight: 700; font-size: 15px; min-width: 6.5em; }
.wl .r .ph { color: var(--ink-soft); font-size: 12px; }
.wl .r .t { flex: 1; color: #444; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wl .r .st { font-size: 11px; padding: 1px 7px; border-radius: 10px; background: #f2efe8; color: var(--ink-soft); white-space: nowrap; }
.wl .r .st.learning { background: #fdf3dc; color: var(--warn); }
.wl .r .st.mastered { background: #e6f4ea; color: var(--ok); }
.wl .r .st.known { background: #e8f0f7; color: var(--accent); }
.wl .r .btn.sm { padding: 2px 8px; font-size: 12px; }
.wl .r.open { flex-wrap: wrap; }
.wl .r.uh { background: #f7f5ef; gap: 10px; }
.wl .r.uh b { font-size: 14px; }
.opts4 .o.unit { align-items: center; }
.wl .r .detail { flex-basis: 100%; font-size: 13px; color: #333; white-space: pre-wrap; line-height: 1.7; padding: 4px 0 2px 2.6em; }
.wl .r .detail .ex { font: 13.5px/1.6 Georgia, serif; color: var(--ink-soft); margin-top: 4px; }
.pager { display: flex; justify-content: center; gap: 8px; margin: 14px 0; align-items: center; font-size: 13px; color: var(--ink-soft); }

/* ---------- 底部标签栏 ---------- */
.tabbar { display: none; }
@media (max-width: 640px) {
  .tabbar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 42;
    display: flex; background: #fff; border-top: 1px solid var(--line);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .tabbar a { flex: 1; display: flex; flex-direction: column; align-items: center; padding: 6px 0 5px;
    font-size: 11px; color: var(--ink-soft); text-decoration: none; }
  .tabbar a i { font-style: normal; font-size: 18px; line-height: 1.2; }
  .tabbar a.on { color: var(--accent); font-weight: 600; }
  body { padding-bottom: calc(56px + env(safe-area-inset-bottom)); }
  .card-toggle { bottom: calc(66px + env(safe-area-inset-bottom)); }
  .toast { bottom: calc(76px + env(safe-area-inset-bottom)); }
  .app { padding: 10px 10px 24px; }
  .hero-card { padding: 14px 14px; border-radius: 12px; }
  .hero-card .tasks { gap: 6px; }
  .top-grid { grid-template-columns: 1fr; gap: 10px; }
  .stat-row { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .stat-row.two { grid-template-columns: repeat(4, 1fr); }
  .stat-row.two span { font-size: 11px; }
  .stat-row b { font-size: 18px; }
  .days i { max-height: 22px; }
  .book .ico { width: 32px; height: 32px; font-size: 11px; }
  .book.tb .hd { padding-right: 0; }
  .book .cur-tag { top: 8px; right: 8px; }
  .book .ft { font-size: 11px; }
  .book .ft .ex { display: none; }   /* 手机上省掉例句数，别把状态挤到第二行 */
  .books { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .book { padding: 11px; }
  .book .ds { display: none; }
  .hide-sm { display: none !important; }
  .topbar .title.brand { font-size: 15px; }
  .panel { padding: 14px; border-radius: 12px; }
  .wcard .w { font-size: 28px; }
  .wl .r .ph { display: none; }
  .wl .r .w { min-width: 5.5em; }
  .wl .r .detail { padding-left: 0; }
  .kbd { display: none; }
}