/* ============================================================
   日知 · news.haoaiganfan.top
   气质：伦勃朗书房晨桌上的油墨晨报
   亮色=羊皮手稿 暗色=伦勃朗夜巡（宪法钦定成对配方）
   ============================================================ */

:root {
  /* 羊皮手稿（提香暖调） */
  --bg: #F0E6D2;
  --paper: #F6EFDF;
  --ink: #3E2F1C;
  --accent: #8A3324;
  --muted: #7A6A52;
  --rule: rgba(62, 47, 28, .28);
  --rule-soft: rgba(62, 47, 28, .14);
  --shadow: 0 2px 14px rgba(46, 32, 16, .08);

  /* 字号音阶 */
  --fs-1: clamp(2.5rem, 6vw, 3.6rem);
  --fs-2: clamp(1.25rem, 2.6vw, 1.5rem);
  --fs-3: 1.0625rem;
  --fs-4: .9375rem;
  --fs-5: .8125rem;

  --ease: cubic-bezier(.2, .9, .3, 1);
}

[data-theme="dark"] {
  /* 伦勃朗夜巡 */
  --bg: #241B12;
  --paper: #2C2216;
  --ink: #E5D5B0;
  --accent: #D4A24E;
  --muted: #A69578;
  --rule: rgba(229, 213, 176, .26);
  --rule-soft: rgba(229, 213, 176, .12);
  --shadow: 0 2px 16px rgba(0, 0, 0, .45);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  font-size: var(--fs-3);
  line-height: 1.85;
  transition: background .3s var(--ease), color .3s var(--ease);
}

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; transition: color .15s, text-decoration-color .15s; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

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

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
button:active { transform: translateY(1px); }

/* ---------- 报头 ---------- */
.masthead { padding-top: 34px; position: relative; }
.masthead h1 {
  font-size: var(--fs-1);
  font-weight: 900;
  letter-spacing: .12em;
  line-height: 1.15;
  text-align: center;
}
.masthead .dateline {
  text-align: center;
  color: var(--muted);
  font-size: var(--fs-5);
  letter-spacing: .18em;
  margin-top: 10px;
}
.masthead .rule {
  margin-top: 16px;
  border-top: 1px solid var(--rule);
  border-bottom: 3px double var(--rule);
  height: 5px;
}

/* 台灯开关（可以玩的瞬间） */
.lamp {
  position: absolute;
  top: 30px;
  right: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: 50%;
  color: var(--muted);
  transition: color .2s, border-color .2s, box-shadow .2s;
}
.lamp:hover { color: var(--accent); border-color: var(--accent); }
[data-theme="dark"] .lamp { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 18px rgba(212, 162, 78, .35); }
.lamp .rays { opacity: 0; transition: opacity .35s var(--ease); }
.lamp:hover .rays { opacity: .45; }
[data-theme="dark"] .lamp .rays { opacity: 1; }
.lamp svg { width: 20px; height: 20px; }

/* ---------- 导航（栏目签） ---------- */
nav.tabs {
  display: flex;
  justify-content: center;
  gap: 38px;
  padding: 14px 0 0;
  border-bottom: 1px solid var(--rule);
}
nav.tabs a {
  text-decoration: none;
  font-size: var(--fs-4);
  letter-spacing: .3em;
  padding: 6px 2px 12px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
nav.tabs a:hover { color: var(--ink); }
nav.tabs a.on { color: var(--accent); border-bottom-color: var(--accent); font-weight: 700; }

/* ---------- 视图 ---------- */
.view { display: none; padding: 30px 0 60px; }
.view.on { display: block; animation: ink-in .25s var(--ease); }
@keyframes ink-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .view.on { animation: none; } html { scroll-behavior: auto; } }

/* ---------- 读报（markdown 渲染区） ---------- */
.issue-head { text-align: center; margin-bottom: 26px; }
.issue-head h2 { font-size: var(--fs-2); font-weight: 900; letter-spacing: .04em; }
.issue-head .kicker { color: var(--accent); font-size: var(--fs-5); letter-spacing: .3em; margin-bottom: 6px; }

.toc { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 28px; }
.toc a {
  font-size: var(--fs-5);
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--rule);
  padding: 3px 12px;
  border-radius: 999px;
  letter-spacing: .08em;
  transition: color .15s, border-color .15s;
}
.toc a:hover { color: var(--accent); border-color: var(--accent); }

.prose { font-size: var(--fs-3); max-width: 46em; margin: 0 auto; }
.prose h1 { font-size: var(--fs-2); margin: 1.6em 0 .8em; letter-spacing: .04em; }
.prose h3 {
  font-size: 1.125rem;
  letter-spacing: .14em;
  margin: 2.2em 0 .9em;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  scroll-margin-top: 20px;
}
.prose p { margin: .9em 0; }
.prose hr { border: 0; border-top: 1px solid var(--rule-soft); margin: 2.2em auto; width: 60%; }
.prose blockquote { border-left: 3px solid var(--rule); padding-left: 14px; color: var(--muted); }
.prose li { margin: .3em 0 .3em 1.4em; }

/* 报纸表格 */
.table-wrap { overflow-x: auto; margin: 1.2em 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: var(--fs-4); line-height: 1.7; }
.prose thead th {
  text-align: left;
  font-weight: 700;
  color: var(--accent);
  font-size: var(--fs-5);
  letter-spacing: .12em;
  padding: 8px 12px;
  border-top: 2px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
.prose tbody td { padding: 9px 12px; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.prose tbody tr:hover { background: var(--paper); }

/* 日期翻页 */
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 44px; padding-top: 16px; border-top: 1px solid var(--rule); }
.pager button {
  font-size: var(--fs-4);
  letter-spacing: .1em;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  transition: color .15s, border-color .15s;
}
.pager button:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }
.pager button:disabled { opacity: .35; cursor: default; }
.pager .today-mark { color: var(--muted); font-size: var(--fs-5); letter-spacing: .2em; }

/* ---------- 归档 ---------- */
.archive-list { max-width: 46em; margin: 0 auto; }
.archive-row {
  display: flex;
  gap: 18px;
  align-items: baseline;
  padding: 15px 4px;
  border-bottom: 1px solid var(--rule-soft);
  cursor: pointer;
  transition: background .15s;
}
.archive-row:hover { background: var(--paper); }
.archive-row .d { font-size: var(--fs-5); color: var(--muted); font-variant-numeric: tabular-nums; letter-spacing: .05em; white-space: nowrap; }
.archive-row .t { font-weight: 700; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.archive-row:hover .t { color: var(--accent); }
.archive-row .n { font-size: var(--fs-5); color: var(--muted); white-space: nowrap; }

/* ---------- 探索 ---------- */
.explore { max-width: 46em; margin: 0 auto; }
.search {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--rule);
  padding: 8px 2px;
  letter-spacing: .04em;
  transition: border-color .2s;
}
.search:focus { outline: none; border-bottom-color: var(--accent); }
.search::placeholder { color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 6px; }
.chip {
  font-size: var(--fs-5);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px 13px;
  color: var(--muted);
  letter-spacing: .06em;
  transition: color .15s, border-color .15s;
}
.chip:hover { color: var(--ink); }
.chip.on { color: var(--paper); background: var(--accent); border-color: var(--accent); }

.sourceboard { margin: 26px 0 8px; padding: 14px 18px; border: 1px solid var(--rule); background: var(--paper); }
.sourceboard h4 { font-size: var(--fs-5); letter-spacing: .25em; color: var(--muted); font-weight: 400; margin-bottom: 8px; }
.sourceboard ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: var(--fs-5); }
.sourceboard li b { color: var(--accent); font-variant-numeric: tabular-nums; margin-right: 4px; }

.item-list { margin-top: 20px; }
.item-row { padding: 13px 4px; border-bottom: 1px solid var(--rule-soft); }
.item-row .meta { font-size: var(--fs-5); color: var(--muted); letter-spacing: .08em; margin-bottom: 2px; font-variant-numeric: tabular-nums; }
.item-row .meta .sec { color: var(--accent); }
.item-row a.t { font-weight: 700; text-decoration: none; }
.item-row a.t:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.item-row .note { font-size: var(--fs-4); color: var(--muted); margin-top: 1px; }

/* ---------- 页脚 ---------- */
footer { border-top: 1px solid var(--rule); padding: 22px 0 40px; text-align: center; color: var(--muted); font-size: var(--fs-5); letter-spacing: .12em; }
footer .ornament { color: var(--accent); margin: 0 10px; }

/* ---------- 状态文案 ---------- */
.state { text-align: center; color: var(--muted); padding: 60px 0; letter-spacing: .06em; }
.state .glyph { color: var(--accent); font-size: 1.6rem; display: block; margin-bottom: 10px; }
.state button { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .masthead { padding-top: 26px; }
  .lamp { top: 22px; }
  nav.tabs { gap: 24px; }
  nav.tabs a { letter-spacing: .18em; }
  .view { padding-top: 22px; }
  .archive-row { flex-wrap: wrap; gap: 4px 12px; }
  .archive-row .t { flex-basis: 100%; order: -1; white-space: normal; }
}