/* ==========================================================
   书籍笔记 · 样式表
   手机优先：默认样式即手机版，宽屏用 min-width 追加
   ========================================================== */

/* ---------- 主题变量 ---------- */
:root {
  --paper:      #EDEFF2;
  --paper-deep: #E3E7EC;
  --ink:        #1A2028;
  --ink-soft:   #55616E;
  --ink-faint:  #8A95A1;
  --rule:       #C6D0DA;
  --grid:       #D6DEE6;
  --pencil:     #B03A29;
  --player:     #2E5C8A;
  --card:       #F6F7F9;
  --shadow:     0 1px 2px rgba(26, 32, 40, .06);

  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --sans:  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:  ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Roboto Mono", monospace;

  --pad: 1.15rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:      #121820;
    --paper-deep: #0D131A;
    --ink:        #DEE5EC;
    --ink-soft:   #9AA6B3;
    --ink-faint:  #6C7887;
    --rule:       #2A3542;
    --grid:       #1E2833;
    --pencil:     #E0705E;
    --player:     #7FB2DE;
    --card:       #171F29;
    --shadow:     none;
  }
}
:root[data-theme="dark"] {
  --paper:      #121820;
  --paper-deep: #0D131A;
  --ink:        #DEE5EC;
  --ink-soft:   #9AA6B3;
  --ink-faint:  #6C7887;
  --rule:       #2A3542;
  --grid:       #1E2833;
  --pencil:     #E0705E;
  --player:     #7FB2DE;
  --card:       #171F29;
  --shadow:     none;
}
:root[data-theme="light"] {
  --paper:      #EDEFF2;
  --paper-deep: #E3E7EC;
  --ink:        #1A2028;
  --ink-soft:   #55616E;
  --ink-faint:  #8A95A1;
  --rule:       #C6D0DA;
  --grid:       #D6DEE6;
  --pencil:     #B03A29;
  --player:     #2E5C8A;
  --card:       #F6F7F9;
  --shadow:     0 1px 2px rgba(26, 32, 40, .06);
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--pencil);
  outline-offset: 3px;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 顶栏（书页） ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--rule);
  padding-top: env(safe-area-inset-top);
}
.topbar .back {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  min-height: 46px;
  padding: 0 var(--pad);
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--ink-soft);
  text-decoration: none;
}
.topbar .back:active { color: var(--pencil); }
/* 单文件导出：没有书架可回，顶栏只剩进度条 */
.topbar.bare { border-bottom: none; min-height: 3px; }

.topbar .progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
}
.topbar .progress i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--pencil);
}

/* ---------- 版心 ---------- */
.page {
  max-width: 43rem;
  margin: 0 auto;
  padding:
    2.2rem
    max(var(--pad), env(safe-area-inset-right))
    calc(4rem + env(safe-area-inset-bottom))
    max(var(--pad), env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
}

/* ---------- 书页页眉 ---------- */
.masthead { display: flex; flex-direction: column; gap: .9rem; }
.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: .7rem;
}
.eyebrow::after { content: ""; flex: 1; height: 1px; background: var(--rule); }

.masthead h1 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 11vw, 3.6rem);
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.15;
  text-wrap: balance;
  margin: 0;
}
.deck {
  font-family: var(--serif);
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--ink-soft);
  margin: 0;
}
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.1rem;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-faint);
  padding-top: .5rem;
  border-top: 1px solid var(--rule);
}

/* ---------- 核心命题 ---------- */
.thesis {
  background: var(--card);
  border-left: 3px solid var(--pencil);
  padding: 1.3rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  box-shadow: var(--shadow);
}
.thesis p { margin: 0; }
.thesis .big p {
  font-family: var(--serif);
  font-size: 1.22rem;
  line-height: 1.7;
}
.thesis .small p { font-size: .95rem; color: var(--ink-soft); }
.thesis .big, .thesis .small { display: flex; flex-direction: column; gap: .7rem; }

/* ---------- 章节 ---------- */
section { display: flex; flex-direction: column; gap: 1rem; }
h2 {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--ink-faint);
  margin: 0;
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--rule);
}
p { margin: 0; }
strong { font-weight: 600; color: var(--ink); }

/* 中文强调用着重号，不用伪斜体——中文字体没有真正的斜体，
   浏览器会把字硬拉歪，很难看 */
em {
  font-style: normal;
  -webkit-text-emphasis: filled dot;
  text-emphasis: filled dot;
  -webkit-text-emphasis-position: under right;
  text-emphasis-position: under right;
}

/* ---------- 一个局 ---------- */
.game { display: flex; flex-direction: column; gap: .95rem; }
.game + .game {
  border-top: 1px solid var(--rule);
  padding-top: 2rem;
  margin-top: 1rem;
}
.game-head { display: flex; flex-direction: column; gap: .5rem; }
.tag {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--pencil);
  border: 1px solid currentColor;
  padding: .16rem .55rem;
  border-radius: 2px;
}
.game h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: .03em;
  line-height: 1.35;
  margin: 0;
  text-wrap: balance;
}
.game h3 span {
  display: block;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--ink-faint);
  margin-top: .15rem;
}

/* ---------- 生活场景卡 ---------- */
.scene {
  background: var(--card);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  box-shadow: var(--shadow);
}
.scene-label {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .13em;
  color: var(--player);
}
.scene p { font-size: .97rem; }

/* ---------- 破局 ---------- */
.takeaway {
  display: flex;
  gap: .7rem;
  align-items: baseline;
  font-size: .97rem;
  color: var(--ink-soft);
}
/* 正文整体作为唯一的 flex item——否则里面的 <strong> 会各自成列被挤成竖排 */
.takeaway > span { flex: 1 1 auto; min-width: 0; }
.takeaway::before {
  content: attr(data-label); /* 标签由 @takeaway 的参数给，默认"破局" */
  flex: none;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--pencil);
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

/* ---------- 换个说法（左右对照） ---------- */
.versus {
  display: flex;
  flex-direction: column;
  gap: .8rem;
  padding: 1.1rem 1.15rem;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
}
.vs-label {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .13em;
  color: var(--ink-faint);
}
.vs-item {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.vs-item + .vs-item {
  border-top: 1px solid var(--rule);
  padding-top: .8rem;
}
.vs-a, .vs-b {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  padding-left: .8rem;
  border-left: 2px solid var(--rule);
}
.vs-a { border-left-color: var(--pencil); }
.vs-b { border-left-color: var(--player); }
.vs-tag {
  font-family: var(--mono);
  font-size: .67rem;
  letter-spacing: .1em;
}
.vs-a .vs-tag { color: var(--pencil); }
.vs-b .vs-tag { color: var(--player); }
.vs-a p { font-size: .95rem; color: var(--ink-faint); }
.vs-b p { font-size: .95rem; color: var(--ink); }

/* ---------- 收益矩阵 ---------- */
.matrix {
  margin: .2rem 0;
  background-color: var(--paper-deep);
  background-image:
    repeating-linear-gradient(to right,  var(--grid) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(to bottom, var(--grid) 0 1px, transparent 1px 22px);
  padding: 1.2rem .8rem .9rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.matrix table {
  border-collapse: collapse;
  margin: 0 auto;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.matrix th, .matrix td {
  border: 1px solid var(--ink-soft);
  padding: .7rem .8rem;
  text-align: center;
  background: var(--paper);
  white-space: nowrap;
}
.matrix th {
  font-family: var(--sans);
  font-weight: 500;
  font-size: .82rem;
  color: var(--ink-soft);
  background: transparent;
  border-color: transparent;
}
.matrix th.col { border-bottom: 1px solid var(--ink-soft); }
.matrix th.row { border-right: 1px solid var(--ink-soft); text-align: right; }
.matrix .corner {
  border: none;
  background: transparent;
  font-family: var(--sans);
  font-size: .7rem;
  color: var(--ink-faint);
  line-height: 1.5;
  white-space: nowrap;
}
.matrix td { position: relative; font-size: .98rem; letter-spacing: .03em; }
.matrix .a { color: var(--player); font-weight: 600; }
.matrix .b { color: var(--pencil); font-weight: 600; }
.matrix .sl { color: var(--ink-faint); margin: 0 .25rem; }
.matrix td.ne::after {
  content: "";
  position: absolute;
  inset: 4px 2px;
  border: 2px solid var(--pencil);
  border-radius: 50%;
  transform: rotate(-3.5deg);
  opacity: .8;
  pointer-events: none;
}
.mx-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.1rem;
  justify-content: center;
  margin-top: .9rem;
  font-family: var(--mono);
  font-size: .71rem;
  color: var(--ink-faint);
}
.mx-legend b { font-weight: 600; }
.mx-legend .k-a { color: var(--player); }
.mx-legend .k-b { color: var(--pencil); }

/* ---------- 工具箱 ---------- */
.tools { display: flex; flex-direction: column; gap: 0; margin: 0; }
.tool {
  display: grid;
  grid-template-columns: 1fr;
  gap: .25rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
}
.tool:first-child { border-top: 1px solid var(--rule); }
.tool dt {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .04em;
}
.tool dd { margin: 0; font-size: .96rem; color: var(--ink-soft); }

/* ---------- 三句话 ---------- */
.quotes {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: q;
}
.quotes li {
  font-family: var(--serif);
  font-size: 1.16rem;
  line-height: 1.7;
  padding-left: 1.2rem;
  border-left: 2px solid var(--pencil);
}

/* ---------- 存疑 ---------- */
.unsure {
  background: var(--paper-deep);
  border: 1px dashed var(--ink-faint);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.unsure-label {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .13em;
  color: var(--ink-faint);
}
.unsure p { font-size: .93rem; color: var(--ink-soft); }

/* ---------- 备注 ---------- */
.note {
  font-size: .9rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--rule);
  padding-top: 1.2rem;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

/* ==========================================================
   书架首页
   ========================================================== */
.shelf { gap: 1.8rem; padding-top: calc(2.4rem + env(safe-area-inset-top)); }
.shelf-head { display: flex; flex-direction: column; gap: .85rem; }
.shelf-head h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 9vw, 2.9rem);
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.25;
  margin: 0;
  text-wrap: balance;
}

/* 搜索 + 筛选 */
.controls { display: flex; flex-direction: column; gap: .8rem; }
#q {
  width: 100%;
  min-height: 46px;
  padding: .6rem .9rem;
  font-family: var(--sans);
  font-size: 16px; /* 低于 16px 会触发 iOS 自动放大 */
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  -webkit-appearance: none;
}
#q::placeholder { color: var(--ink-faint); }

.filters {
  display: flex;
  gap: .45rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: .2rem;
}
.filters::-webkit-scrollbar { display: none; }

.chip {
  flex: none;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: .3rem .75rem;
  white-space: nowrap;
}
button.chip { min-height: 34px; cursor: pointer; font-family: var(--mono); }
button.chip.on {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

/* 书卡 */
.cards { display: flex; flex-direction: column; gap: .8rem; }
.card {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 1.1rem 1.15rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.card:active { border-color: var(--pencil); }
.card[hidden] { display: none; }
.card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.card h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink);
  margin: 0;
  padding: 0;
  border: none;
}
.card .mins {
  flex: none;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-faint);
}
.card p { font-size: .94rem; color: var(--ink-soft); line-height: 1.65; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chips .chip { font-size: .68rem; padding: .15rem .5rem; }

.empty { color: var(--ink-faint); font-size: .95rem; text-align: center; padding: 2rem 0; }
.shelf-foot {
  font-family: var(--mono);
  font-size: .73rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--rule);
  padding-top: 1.1rem;
}

/* ==========================================================
   宽屏追加
   ========================================================== */
@media (min-width: 40rem) {
  body { font-size: 16.5px; }
  .page { padding: 3.5rem 1.5rem 6rem; gap: 3rem; }
  .shelf { padding-top: 4rem; }
  .deck { font-size: 1.18rem; max-width: 32rem; }
  .thesis { padding: 1.6rem 1.7rem; }
  .scene { padding: 1.15rem 1.3rem; }
  .matrix { padding: 1.5rem 1.2rem 1.1rem; }
  .matrix th, .matrix td { padding: .85rem 1.05rem; }
  .game h3 { font-size: 1.62rem; }
  .game h3 span {
    display: inline;
    margin-left: .6rem;
    font-size: .78rem;
  }
  .tool { grid-template-columns: 7.5rem 1fr; gap: .3rem 1.4rem; }
  .versus { padding: 1.4rem 1.5rem; }
  .vs-item { flex-direction: row; gap: 1.2rem; }
  .vs-a, .vs-b { flex: 1 1 0; min-width: 0; }
  .quotes li { font-size: 1.24rem; padding-left: 1.4rem; }
  .cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .topbar .back:hover { color: var(--pencil); }
  .card:hover { border-color: var(--ink-faint); }
  button.chip:hover { border-color: var(--ink-faint); }
}