/* ============================================================
   Ink Blog · ink.css
   水墨专项样式：墨晕、宣纸质感增强、印章盖印、卷轴、山水装饰
   ============================================================ */

/* ---------- 墨晕容器（hover 时扩散） ---------- */
.ink-hover {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.ink-hover .ink-blob {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(20,20,20,0.5) 0%,
    rgba(20,20,20,0.25) 40%,
    rgba(20,20,20,0.08) 70%,
    transparent 100%);
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  transition: opacity .4s ease;
  filter: blur(2px);
  z-index: 0;
}
.ink-hover:hover .ink-blob {
  opacity: 1;
  animation: ink-blob-grow 1.2s var(--ease-settle) forwards;
}
@keyframes ink-blob-grow {
  0%   { transform: translate(-50%, -50%) scale(0);   border-radius: 50%; }
  40%  { transform: translate(-50%, -50%) scale(1.1); border-radius: 48% 52% 60% 40%; }
  100% { transform: translate(-50%, -50%) scale(1);   border-radius: 46% 54% 58% 42%; }
}

/* ---------- 印章盖印动画 ---------- */
.stamp {
  position: relative;
  display: inline-block;
  opacity: 0;
  transform: scale(1.8) rotate(-12deg);
  filter: blur(4px);
}
.stamp.stamped {
  animation: stamp-press .6s var(--ease-settle) forwards;
}
@keyframes stamp-press {
  0%   { opacity: 0; transform: scale(1.8) rotate(-12deg); filter: blur(4px); }
  50%  { opacity: 0.85; transform: scale(0.95) rotate(-3deg); filter: blur(1px); }
  70%  { opacity: 1; transform: scale(1.02) rotate(-2deg); filter: blur(0); }
  100% { opacity: 0.95; transform: scale(1) rotate(-2deg); filter: blur(0); }
}

/* ---------- 卷轴样式 ---------- */
.scroll {
  position: relative;
  padding: var(--sp-5) var(--sp-4);
  background:
    linear-gradient(180deg, var(--paper-light), var(--paper) 8%, var(--paper) 92%, var(--paper-dark));
}
/* 卷轴上下滚轴 */
.scroll-rod {
  position: relative;
  height: 14px;
  background:
    linear-gradient(180deg, var(--ink-zhong) 0%, var(--ink-jiao) 50%, var(--ink-zhong) 100%);
  border-radius: 7px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.15),
    0 2px 6px rgba(0,0,0,0.2);
}
.scroll-rod::before, .scroll-rod::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 22px; height: 22px;
  background: radial-gradient(circle at 35% 35%, var(--gold), #8a6f2e 70%, #5c4a1e);
  border-radius: 50%;
  transform: translateY(-50%);
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}
.scroll-rod::before { left: -8px; }
.scroll-rod::after  { right: -8px; }

/* 卷轴展开动画 */
.scroll-unrolling {
  animation: scroll-unroll 1.6s var(--ease-settle) both;
  transform-origin: top;
}
@keyframes scroll-unroll {
  0%   { transform: scaleY(0); opacity: 0; }
  60%  { transform: scaleY(0.02); opacity: 1; }
  100% { transform: scaleY(1); opacity: 1; }
}

/* ---------- 山水剪影装饰 ---------- */
.mountain-silhouette {
  position: absolute;
  bottom: 0; left: 0;
  width: 100%;
  height: 40vh;
  pointer-events: none;
  opacity: 0.5;
  z-index: 1;
}

/* ---------- 飞鸟装饰 ---------- */
.bird {
  position: absolute;
  font-family: var(--font-kai);
  color: var(--ink-zhong);
  opacity: 0.4;
  pointer-events: none;
  font-size: 1.5rem;
}

/* ---------- 远山雾气 ---------- */
.mist {
  position: absolute;
  width: 200%;
  height: 200px;
  background: radial-gradient(ellipse at center,
    rgba(244,236,221,0.9) 0%,
    rgba(244,236,221,0.5) 40%,
    transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

/* ---------- 古籍页码装饰 ---------- */
.folio {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-block: var(--sp-4);
  font-family: var(--font-latin);
  font-style: italic;
  color: var(--ink-qing);
  font-size: var(--fs-sm);
  letter-spacing: 0.2em;
}
.folio::before, .folio::after {
  content: '※';
  color: var(--seal);
  opacity: 0.6;
  font-size: var(--fs-xs);
}

/* ---------- 首字下沉（古籍首字放大） ---------- */
.drop-cap::first-letter {
  font-family: var(--font-kai);
  font-size: 3.5em;
  float: left;
  line-height: 0.9;
  padding: 0.1em 0.15em 0 0;
  color: var(--ink-jiao);
  font-weight: 400;
}

/* ---------- 引用块：古籍样式 ---------- */
.quote-classic {
  position: relative;
  margin: var(--sp-4) 0;
  padding: var(--sp-3) var(--sp-4) var(--sp-3) 3rem;
  font-family: var(--font-kai);
  font-size: var(--fs-lg);
  color: var(--ink-zhong);
  line-height: 1.9;
  background:
    linear-gradient(90deg, rgba(156,42,42,0.04) 0%, transparent 100%);
  border-left: none;
}
.quote-classic::before {
  content: '「';
  position: absolute;
  left: 0.5rem; top: 0;
  font-size: 2.5rem;
  color: var(--seal);
  opacity: 0.5;
  font-family: var(--font-kai);
}
.quote-classic::after {
  content: '」';
  font-size: 1.5rem;
  color: var(--seal);
  opacity: 0.5;
  margin-left: 0.3rem;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  padding: 0.2rem 0.9rem;
  font-size: var(--fs-xs);
  color: var(--ink-dan);
  border: 1px solid var(--ink-qing);
  border-radius: 999px;
  letter-spacing: 0.1em;
  transition: all .4s var(--ease-ink);
}
.tag:hover {
  background: var(--ink-nong);
  color: var(--paper-light);
  border-color: var(--ink-nong);
}

/* ---------- 墨痕书写效果（编辑器输入时） ---------- */
.writing-stroke {
  position: relative;
  display: inline-block;
}
.writing-stroke::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--ink-jiao);
  transform: scaleX(0);
  transform-origin: left;
  animation: stroke-write .8s var(--ease-brush) forwards;
}
@keyframes stroke-write {
  to { transform: scaleX(1); }
}

/* ---------- 图片灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(13,13,13,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity .4s ease;
  backdrop-filter: blur(8px);
}
.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  transform: scale(0.9);
  transition: transform .5s var(--ease-settle);
}
.lightbox.open img { transform: scale(1); }
.lightbox-close {
  position: absolute;
  top: 2rem; right: 2rem;
  color: var(--paper-light);
  font-size: 2rem;
  font-family: var(--font-kai);
}

/* ---------- 页面切换墨染遮罩 ---------- */
.page-veil {
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  background: var(--ink-jiao);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
}
.page-veil.cover {
  animation: veil-cover .6s var(--ease-brush) forwards;
}
.page-veil.reveal {
  animation: veil-reveal .6s var(--ease-brush) forwards;
}
@keyframes veil-cover {
  0%   { transform: scaleX(0); transform-origin: left; opacity: 1; }
  100% { transform: scaleX(1); transform-origin: left; opacity: 1; }
}
@keyframes veil-reveal {
  0%   { transform: scaleX(1); transform-origin: right; opacity: 1; }
  100% { transform: scaleX(0); transform-origin: right; opacity: 0; }
}

/* ---------- 加载水墨开场 ---------- */
.ink-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  transition: opacity .8s ease, visibility .8s ease;
}
.ink-loader.hidden {
  opacity: 0;
  visibility: hidden;
}
.ink-loader .ink-drop {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ink-jiao) 20%, transparent 70%);
  animation: ink-drop-fall 1.6s var(--ease-settle) infinite;
}
.ink-loader .ink-ripple {
  position: absolute;
  width: 100px; height: 100px;
  border: 2px solid var(--ink-dan);
  border-radius: 50%;
  opacity: 0;
  animation: ink-ripple-out 1.6s var(--ease-settle) infinite;
}
@keyframes ink-drop-fall {
  0%, 100% { transform: translateY(-30px) scale(0.6); opacity: 0; }
  40%      { transform: translateY(0) scale(1); opacity: 1; }
  60%      { transform: translateY(0) scale(1.2); opacity: 0.8; }
}
@keyframes ink-ripple-out {
  0%   { transform: scale(0.3); opacity: 0.8; }
  100% { transform: scale(1.5); opacity: 0; }
}
.ink-loader .loader-text {
  margin-top: var(--sp-4);
  font-family: var(--font-kai);
  color: var(--ink-dan);
  letter-spacing: 0.4em;
  font-size: var(--fs-sm);
}

/* ---------- 砚台/毛笔/印章装饰元素 ---------- */
.inkstone {
  width: 120px; height: 80px;
  background:
    radial-gradient(ellipse at 40% 40%, var(--ink-jiao) 0%, var(--ink-zhong) 40%, transparent 70%),
    radial-gradient(ellipse at center, #4a3d2a 0%, #2a2218 80%);
  border-radius: 50%;
  box-shadow: inset 0 -4px 12px rgba(0,0,0,0.5), 0 6px 16px rgba(0,0,0,0.3);
  position: relative;
}

/* ---------- 文章卡片专属（卷轴宣纸感） ---------- */
.article-card {
  position: relative;
  background:
    linear-gradient(160deg, var(--paper-light) 0%, var(--paper) 70%, var(--paper-dark) 100%);
  padding: var(--sp-4) var(--sp-4) var(--sp-3);
  overflow: hidden;
  transition: transform .6s var(--ease-settle), box-shadow .6s var(--ease-settle);
  box-shadow:
    0 1px 3px rgba(60,40,20,0.1),
    0 6px 16px rgba(60,40,20,0.05);
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 4px 8px rgba(60,40,20,0.12),
    0 16px 40px rgba(60,40,20,0.12);
}
/* 卡片悬浮时浮现的小印章 */
.article-card .hover-seal {
  position: absolute;
  top: 1rem; right: 1rem;
  opacity: 0;
  transform: rotate(-20deg) scale(0.6);
  transition: all .6s var(--ease-settle);
}
.article-card:hover .hover-seal {
  opacity: 1;
  transform: rotate(-8deg) scale(1);
}

/* 卡片角标水墨 */
.article-card::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 100px; height: 100px;
  background: radial-gradient(circle, rgba(20,20,20,0.06) 0%, transparent 60%);
  pointer-events: none;
}

/* ---------- 代码块（古籍版式） ---------- */
.code-block {
  position: relative;
  background: var(--ink-jiao);
  color: var(--paper-light);
  padding: var(--sp-3) var(--sp-4);
  margin-block: var(--sp-3);
  font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  font-size: var(--fs-sm);
  line-height: 1.7;
  overflow-x: auto;
  border-radius: 2px;
  letter-spacing: 0.02em;
}
.code-block::before {
  content: '碼';
  position: absolute;
  top: 0.5rem; right: 0.75rem;
  font-family: var(--font-kai);
  color: var(--ink-qing);
  font-size: var(--fs-xs);
  opacity: 0.5;
}
.code-block code { background: none; padding: 0; }

/* ---------- 媒体块（视频 / 全幅图片，文章与后台共用） ---------- */
.md-media-block {
  margin: var(--sp-4) 0;
  text-align: center;
  position: relative;
  max-width: 100%;
}
.md-media-block.md-video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  background: #000;
  border-radius: 2px;
  margin-bottom: 0;
}
/* 视频后的描述紧贴，间距同图片 */
.md-media-block.md-video + .md-media-caption {
  margin-top: var(--sp-1);
  margin-bottom: var(--sp-4);
}
.md-media-block.md-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border: 8px solid var(--paper);
  box-shadow: 0 8px 24px rgba(60,40,20,0.15);
  background: #000;
  border-radius: 2px;
  display: block;
}
.md-media-caption {
  display: block;
  text-align: center;
  margin-top: var(--sp-1);
  font-family: var(--font-kai);
  font-size: var(--fs-sm);
  color: var(--ink-dan);
  letter-spacing: 0.15em;
}
.md-media-block .md-img { max-width: 100%; margin: 0 auto; }
.md-media-ref {
  display: inline-block;
  padding: 0.1em 0.5em;
  background: rgba(156,42,42,0.08);
  border-radius: 2px;
  font-family: var(--font-kai);
  font-size: 0.9em;
  letter-spacing: 0.1em;
  vertical-align: middle;
}

/* ================= v4 夜间模式 & 搜索 ================= */
/* —— 暗色调色板（墨夜宣纸）—— */
html[data-theme="dark"] {
  --ink-jiao:  #e8dfc9;   /* 暖米白，不刺眼 */
  --ink-nong:  #d8cdb4;
  --ink-zhong: #b3a88e;
  --ink-dan:   #8d8370;
  --ink-qing:  #635c4c;
  --paper:      #282419;   /* 柔和墨夜，带暖褐 */
  --paper-light:#302b20;
  --paper-dark: #1d1a13;
  --paper-aged: #383227;
  --seal:       #c44545;
  --seal-light: #d96a6a;
  --seal-glow:  rgba(196, 69, 69, 0.35);
  --gold:       #c2a05a;
  --bamboo:     #7d8f62;
}
html[data-theme="dark"] .navbar.scrolled {
  background: rgba(40, 36, 25, 0.85);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 6px 20px rgba(0, 0, 0, 0.3);
}
html[data-theme="dark"] .navbar-menu {
  background: rgba(40, 36, 25, 0.97);
}
html[data-theme="dark"] .nav-list li {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
/* 水墨 canvas 反相：白昼墨色变浅夜山影 */
html[data-theme="dark"] #ink-canvas {
  filter: none;
  opacity: .22;
}
html[data-theme="dark"] #cursor-trail {
  filter: none;
  opacity: .35;
}
html[data-theme="dark"] #brush-cursor .brush-tip {
  border-top-color: #e9e1d0;
}
html[data-theme="dark"] .hero-art-bg {
  filter: brightness(.6) saturate(.9);
}
html[data-theme="dark"] .scroll-body {
  background: linear-gradient(180deg, transparent, rgba(40, 36, 25, 0.5) 10%, rgba(40, 36, 25, 0.5) 90%, transparent);
}

/* —— 搜索页 —— */
.search-input {
  width: 100%;
  font-family: var(--font-kai);
  font-size: 1.1rem;
  padding: .65rem .9rem;
  background: var(--paper);
  color: var(--ink-jiao);
  border: 1px solid var(--ink-qing);
  outline: none;
}
.search-input:focus { border-color: var(--seal); }
.search-results { margin-top: .9rem; }
.search-item {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .6rem .3rem;
  border-bottom: 1px dashed var(--ink-qing);
  text-decoration: none;
}
.search-item:hover .si-title { color: var(--seal); }
.si-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-kai);
  color: var(--ink-jiao);
  font-size: 1.02rem;
}
.si-meta {
  flex-shrink: 0;
  font-size: .72rem; color: var(--ink-dan);
  margin: 0;
}
.si-summary { display: none; }
.search-empty {
  color: var(--ink-dan);
  font-family: var(--font-kai);
  padding: 1.2rem 0;
  text-align: center;
  letter-spacing: .2em;
}