/* ============================================================
   冷月幽 · 基础层
   变量 / 暗色主题 / 重置 / 通用布局
   全站每页都引入
   ============================================================ */

/* 霞鹜文楷（LXGW WenKai）— 开源可商用楷体，本地子集
   字体文件在 assets/fonts/，只包含站点实际用字所在的分片
   按 unicode-range 分片，浏览器只会下载页面用到的部分
   字体族名：'LXGW WenKai'
   若字体文件缺失，下面 --font-kai 里有系统楷体兜底 */
@import url('../fonts/wenkai-regular.css');
@import url('../fonts/wenkai-bold.css');

:root {
  --paper:      #f8f4ec;
  --paper-2:    #f2e9d8;
  --paper-3:    #fffdf8;
  --paper-4:    #f6efe3;

  --ink:        #2f271e;
  --ink-2:      #5f5241;
  --ink-3:      #8a7a63;
  --ink-4:      #a89a85;

  --moon:       #6f8285;   /* 冷月：青灰，比纸色深 */

  --cinnabar:   #a4503a;
  --cinnabar-2: #8c3f2c;
  --cinnabar-soft: rgba(164, 80, 58, .12);

  --gold:       #b9924f;
  --line:       #e4dac7;
  --line-2:     #cfc2a9;

  --radius:     10px;
  --wrap:       1120px;   /* 全站容器最大宽度 */
  --measure:    600px;    /* 正文阅读区最大宽度（约 37 字/行） */

  --font-serif: 'Songti SC', 'STSong', 'SimSun', 'Noto Serif SC', 'Source Han Serif SC', serif;
  /* 楷体：优先用霞鹜文楷，取不到则回落到系统楷体 */
  --font-kai:   'LXGW WenKai', 'STKaiti', 'KaiTi', 'Kaiti SC', 'Songti SC', 'Noto Serif SC', serif;

  --shadow-sm: 0 1px 2px rgba(63, 48, 32, .05), 0 6px 18px -12px rgba(63, 48, 32, .20);
  --shadow-md: 0 2px 6px rgba(63, 48, 32, .07), 0 20px 44px -26px rgba(63, 48, 32, .38);

  --ease: cubic-bezier(.2, .7, .2, 1);
}

[data-theme="dark"] {
  --paper:      #1a1815;
  --paper-2:    #232019;
  --paper-3:    #211e18;
  --paper-4:    #272319;

  --ink:        #eae2d3;
  --ink-2:      #c9bda8;
  --ink-3:      #9a8d78;
  --ink-4:      #776b58;

  --moon:       #d5e6e2;   /* 冷月：月白偏青，比夜色亮 */

  --cinnabar:   #c96a4e;
  --cinnabar-2: #d97b5e;
  --cinnabar-soft: rgba(201, 106, 78, .16);

  --gold:       #c9a468;
  --line:       #352f26;
  --line-2:     #4a4235;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 18px -12px rgba(0, 0, 0, .6);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, .35), 0 20px 44px -26px rgba(0, 0, 0, .8);
}

/* ---------- 主题切换：View Transitions ---------- */
/* 关掉默认的交叉淡入，改由 JS 给「新帧」加圆形扩散动画 */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

/* 旧帧在下、新帧在上，新帧的圆从点击点扩出来盖住旧帧 */
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

html.theme-anim,
html.theme-anim body,
html.theme-anim .site-header,
html.theme-anim .daily-card,
html.theme-anim .entry-card,
html.theme-anim .recent-card,
html.theme-anim .quote-face,
html.theme-anim .photo,
html.theme-anim .scroll-card,
html.theme-anim .about-card,
html.theme-anim .site-footer {
  transition: background-color .4s var(--ease), border-color .4s var(--ease), color .4s var(--ease);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(1100px 520px at 50% -180px, #fffdf8, transparent 70%),
    radial-gradient(720px 420px at 96% 2%, rgba(185, 146, 79, .09), transparent 65%),
    repeating-linear-gradient(90deg, rgba(122, 101, 68, .022) 0 1px, transparent 1px 6px),
    repeating-linear-gradient(0deg, rgba(122, 101, 68, .018) 0 1px, transparent 1px 6px);
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(1100px 520px at 50% -180px, #24211a, transparent 70%),
    radial-gradient(720px 420px at 96% 2%, rgba(201, 164, 104, .07), transparent 65%),
    repeating-linear-gradient(90deg, rgba(230, 215, 190, .018) 0 1px, transparent 1px 6px),
    repeating-linear-gradient(0deg, rgba(230, 215, 190, .014) 0 1px, transparent 1px 6px);
}

body.nav-open { overflow: hidden; }

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; }

h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.35; }

p { margin: 0; }

ul { margin: 0; padding: 0; }

blockquote { margin: 0; }

time { font-variant-numeric: tabular-nums; }

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

::selection { background: rgba(164, 80, 58, .18); }

.wrap {
  width: min(100% - 48px, var(--wrap));
  margin-inline: auto;
}

.section { padding: clamp(36px, 5vw, 64px) 0; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.section-head .section-desc { margin-top: 6px; }

.section-title {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-kai);
  font-size: 20px;
  letter-spacing: .16em;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .28em;
  bottom: .28em;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cinnabar), var(--gold));
}

.section-desc { color: var(--ink-3); font-size: 13px; letter-spacing: .04em; }

.section-more {
  flex: none;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: .1em;
  transition: color .25s var(--ease);
}

.section-more:hover { color: var(--cinnabar); }

.ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 4px 0;
}

.ornament::before,
.ornament::after {
  content: "";
  height: 1px;
  width: min(120px, 22vw);
  background: linear-gradient(90deg, transparent, var(--line-2));
}

.ornament::after { background: linear-gradient(90deg, var(--line-2), transparent); }

.ornament i {
  width: 6px; height: 6px;
  transform: rotate(45deg);
  border: 1px solid var(--line-2);
}

.seal {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: none;
  /* 刻意「什么都没有」：canvas 插入前不闪旧印章 */
  background: transparent;
  color: transparent;
  border-radius: 0;
  box-shadow: none;
  transform: none;
  transition: transform .35s var(--ease);
}

/* ---------- 印章：会流动的墨（seal.js 接管） ---------- */
.seal.seal-live {
  position: relative;
  overflow: visible;
}

.seal-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

/* ---------- 月亮升起 ---------- */
.seal.is-rising {
  animation: moonRise .9s cubic-bezier(.22, .61, .36, 1) both;
}

@keyframes moonRise {
  0% {
    opacity: 0;
    transform: scale(.55);
    filter: blur(5px);
  }
  62% {
    opacity: 1;
    transform: scale(1.08);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

/* 减弱动效：不做缩放和模糊，直接出现 */
@media (prefers-reduced-motion: reduce) {
  .seal.is-rising {
    animation: none;
    opacity: 1;
    filter: none;
  }
}


.brand:hover .seal { transform: scale(1.04); }

.chip {
  display: inline-block;
  padding: 2px 9px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: .1em;
  color: var(--cinnabar);
  background: var(--cinnabar-soft);
  border-radius: 3px;
}

[data-lang="en"] .entry-title,
[data-lang="en"] .section-title,
[data-lang="en"] .page-title { letter-spacing: .04em; }

.ico-stroke { fill: none; stroke: var(--ink-3); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }

.ico-accent { fill: none; stroke: var(--cinnabar); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }

.ico-fill { fill: rgba(164, 80, 58, .14); stroke: none; }

.ico-gold { fill: rgba(185, 146, 79, .5); stroke: none; }

.player-progress:hover .player-knob,
.player-progress:focus-visible .player-knob,
.player[data-seeking="true"] .player-knob { opacity: 1; transform: scale(1); }

.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}

/* ---------- 空状态 ---------- */
.empty-state {
  grid-column: 1 / -1;          /* grid 里跨满所有列 */
  padding: 64px 20px 56px;
  text-align: center;
}

/* 瀑布流（columns）不支持 grid-column，用 column-span */
.masonry > .empty-state,
.scroll-list > .empty-state,
.quote-grid > .empty-state {
  column-span: all;
}

.empty-title {
  font-family: var(--font-kai);
  font-size: 20px;
  letter-spacing: .12em;
  color: var(--ink-3);
  margin-bottom: 10px;
}

.empty-hint {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--ink-4);
}

.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

@media (max-width: 760px) {
  .wrap { width: min(100% - 36px, var(--wrap)); }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; }
}