/* --------------------------------------------------------------------------
   SegemiPL 博客：日间浅蓝 · 夜间深紫（Zensical / Material modern）
   -------------------------------------------------------------------------- */

@import url("https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400..800;1,6..72,400..800&display=swap");

/* --- 日间 default：浅蓝层次 ------------------------------------------------ */
[data-md-color-scheme="default"] {
  --zen-surface: #e8f3fb;
  --zen-surface-raised: #f2f8fd;
  --zen-surface-muted: #d9eaf7;
  --zen-border: rgba(20, 80, 120, 0.12);

  --md-default-bg-color: var(--zen-surface);
  --md-default-bg-color--light: #f5faff;
  --md-default-bg-color--lighter: var(--zen-surface-muted);
  --md-default-bg-color--lightest: #cfe5f5;

  --md-default-fg-color: rgba(15, 45, 70, 0.92);
  --md-default-fg-color--light: rgba(25, 60, 88, 0.72);
  --md-default-fg-color--lighter: rgba(30, 70, 100, 0.48);
  --md-default-fg-color--lightest: rgba(20, 65, 95, 0.14);

  --md-code-fg-color: #1a3a52;
  --md-code-bg-color: #dceef9;
  --md-code-bg-color--light: #d0e8f6;
  --md-code-bg-color--lighter: rgba(12, 90, 140, 0.12);

  --md-typeset-a-color: #0277bd;
  --md-typeset-mark-color: rgba(2, 136, 209, 0.22);
}

/* --- 夜间 slate：深紫相 + 可读链接（整体略提亮，侧栏略深于主栏） ---------- */
[data-md-color-scheme="slate"] {
  --md-hue: 278;
  /* 在保持紫相的前提下抬高明度（主题默认约 5% 过黑） */
  --md-default-bg-color: hsla(var(--md-hue), 15%, 13%, 1);
  --md-default-bg-color--light: hsla(var(--md-hue), 15%, 13%, 0.58);
  --md-default-bg-color--lighter: hsla(var(--md-hue), 15%, 13%, 0.32);
  --md-default-bg-color--lightest: hsla(var(--md-hue), 15%, 13%, 0.12);
  /* 主内容区略亮于默认底，侧栏略深，形成稳定分隔（不改色相，只调明度层次） */
  --zen-slate-main-bg: hsla(var(--md-hue), 14%, 15.5%, 1);
  --zen-slate-sidebar-bg: hsla(var(--md-hue), 16%, 10.5%, 1);
  --zen-slate-sidebar-border: hsla(var(--md-hue), 18%, 22%, 0.35);
}

[data-md-color-scheme="slate"][data-md-color-primary="deep-purple"] {
  --md-typeset-a-color: #c4a7ff;
}

[data-md-color-scheme="slate"][data-md-color-accent="purple"] {
  --md-accent-fg-color: #e879f9;
  --md-accent-fg-color--transparent: rgba(232, 121, 249, 0.18);
}

[data-md-color-scheme="slate"] .md-sidebar--primary .md-sidebar__inner {
  background-color: var(--zen-slate-sidebar-bg);
}

[data-md-color-scheme="slate"] .md-main .md-content {
  background-color: var(--zen-slate-main-bg);
}

[data-md-color-scheme="slate"] .md-sidebar--primary {
  border-right-color: var(--zen-slate-sidebar-border);
}

/* --- 排版：标题衬线（拉丁由 Newsreader 渲染，中文回退到 Noto Sans SC）------ */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-family: "Newsreader", "Noto Sans SC", serif;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.md-typeset {
  font-size: 0.95rem;
  line-height: 1.72;
}

.md-typeset a:not(.md-button):not(.zen-post-card) {
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--md-typeset-a-color) 35%, transparent);
  text-underline-offset: 0.2em;
  transition:
    color 0.2s ease,
    text-decoration-color 0.2s ease;
}

.md-typeset a:not(.md-button):not(.zen-post-card):hover {
  text-decoration-color: var(--md-typeset-a-color);
}

/* --- 壳层：顶栏、侧栏、主栏 ------------------------------------------------ */
.md-header {
  box-shadow:
    0 0.05rem 0 var(--zen-border, rgba(0, 0, 0, 0.06)),
    0 0.15rem 0.6rem rgba(15, 50, 80, 0.06);
}

[data-md-color-scheme="slate"] .md-header {
  box-shadow:
    0 0.05rem 0 rgba(200, 180, 255, 0.08),
    0 0.2rem 0.8rem rgba(0, 0, 0, 0.35);
}

.md-sidebar--primary {
  border-right: 1px solid var(--zen-border, var(--md-default-fg-color--lightest));
}

.md-nav__link--active {
  font-weight: 600;
}

.md-main {
  position: relative;
}

/*
 * 全站纸张质感（同一 SVG 平铺：淡横纹 + 竖纤维感 + 去饱和微粒噪点，昼夜几何一致）
 * 纹理为灰度，不叠加 mix-blend 改色；浅色为黑墨浓度，深色仅对纹理层 invert，底面色相仍由主题变量决定。
 */
body {
  position: relative;
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.055;
  background-position: 0 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cdefs%3E%3Cfilter id='grain' x='-20%25' y='-20%25' width='140%25' height='140%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch' result='t'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Cpattern id='rules' width='200' height='200' patternUnits='userSpaceOnUse'%3E%3Cpath d='M0 40h200M0 80h200M0 120h200M0 160h200' fill='none' stroke='%23000' stroke-opacity='0.07' stroke-width='0.35'/%3E%3Cpath d='M24 0v200M68 0v200M112 0v200M156 0v200' fill='none' stroke='%23000' stroke-opacity='0.04' stroke-width='0.25'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23rules)'/%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)' opacity='0.65'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

body[data-md-color-scheme="slate"]::before {
  opacity: 0.075;
  filter: invert(1);
}

.md-content {
  position: relative;
}

/* --- 组件：代码块、提示框、表格、引用 -------------------------------------- */
.md-typeset pre {
  border-radius: 0.45rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 0.1rem 0.35rem rgba(10, 40, 70, 0.06);
}

[data-md-color-scheme="slate"] .md-typeset pre {
  border-color: rgba(200, 180, 255, 0.12);
  box-shadow: 0 0.2rem 0.6rem rgba(0, 0, 0, 0.25);
}

.md-typeset .admonition {
  border-radius: 0.45rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 0.08rem 0.3rem rgba(10, 40, 70, 0.05);
  transition:
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .md-typeset .admonition:hover {
    box-shadow: 0 0.2rem 0.55rem rgba(10, 40, 70, 0.1);
    transform: translateY(-1px);
  }

  [data-md-color-scheme="slate"] .md-typeset .admonition:hover {
    box-shadow: 0 0.25rem 0.7rem rgba(0, 0, 0, 0.35);
  }
}

.md-typeset blockquote {
  border-left-width: 0.22rem;
  border-radius: 0 0.35rem 0.35rem 0;
  background-color: var(--md-default-bg-color--lighter);
}

.md-typeset table:not([class]) {
  border-radius: 0.4rem;
  overflow: hidden;
  box-shadow: 0 0.06rem 0.25rem rgba(10, 40, 70, 0.06);
}

/* --- 文章列表卡片 ---------------------------------------------------------- */
.zen-post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
  max-width: 40rem;
}

.zen-post-card {
  display: block;
  padding: 1.15rem 1.35rem;
  border-radius: 0.5rem;
  text-decoration: none !important;
  color: inherit !important;
  background: var(--md-default-bg-color--light);
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 0.08rem 0.35rem rgba(10, 50, 80, 0.06);
  transition:
    border-color 0.2s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

.zen-post-card:hover {
  border-color: color-mix(in srgb, var(--md-typeset-a-color) 45%, transparent);
  box-shadow: 0 0.2rem 0.65rem rgba(10, 60, 100, 0.12);
}

.zen-post-card__title {
  display: block;
  font-family: "Newsreader", "Noto Sans SC", serif;
  font-size: 1.2rem;
  font-weight: 650;
  color: var(--md-typeset-color, var(--md-default-fg-color));
  margin-bottom: 0.35rem;
}

.zen-post-card__meta {
  display: block;
  font-size: 0.82rem;
  color: var(--md-default-fg-color--light);
}

@media (prefers-reduced-motion: no-preference) {
  .zen-post-card:hover {
    transform: translateY(-3px);
  }
}

[data-md-color-scheme="slate"] .zen-post-card {
  box-shadow: 0 0.12rem 0.45rem rgba(0, 0, 0, 0.28);
}

[data-md-color-scheme="slate"] .zen-post-card:hover {
  box-shadow: 0 0.25rem 0.85rem rgba(0, 0, 0, 0.45);
}

/* 首页扉页式导语 */
.zen-lead {
  font-size: 1.05rem;
  color: var(--md-default-fg-color--light);
  max-width: 42rem;
  padding: 0.75rem 0 0.25rem;
  margin: 0 0 1rem !important;
  border-left: 3px solid color-mix(in srgb, var(--md-typeset-a-color) 55%, transparent);
  padding-left: 1rem;
}

.zen-lead p {
  margin: 0.4em 0;
}

.zen-lead p:first-child {
  margin-top: 0;
}

.zen-lead p:last-child {
  margin-bottom: 0;
}

/* --- Instant 导航：主内容入场 ---------------------------------------------- */
@keyframes zen-content-enter {
  from {
    opacity: 0;
    transform: translateY(0.55rem);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

article.md-content__inner.zen-content-enter {
  animation: zen-content-enter 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@media (prefers-reduced-motion: reduce) {
  article.md-content__inner.zen-content-enter {
    animation: none !important;
  }

  .md-typeset .admonition {
    transition: none;
  }

  .md-typeset .admonition:hover {
    transform: none;
  }

  .zen-post-card {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .zen-post-card:hover {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   全站鼠标装饰层（由 extra.js 注入；pointer-events:none，低于顶栏/搜索层）
   -------------------------------------------------------------------------- */
#zen-cursor-fx {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 3;
}

#zen-cursor-fx.zen-cursor-fx--off {
  visibility: hidden;
}

#zen-cursor-fx-toggle {
  position: fixed;
  right: 0.85rem;
  bottom: 0.85rem;
  z-index: 5;
  margin: 0;
  padding: 0.35rem 0.65rem;
  font: inherit;
  font-size: 0.72rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--md-default-fg-color--light);
  background: color-mix(in srgb, var(--md-default-bg-color--light) 88%, transparent);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 999px;
  box-shadow: 0 0.06rem 0.25rem rgba(10, 40, 70, 0.08);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease;
}

#zen-cursor-fx-toggle:hover {
  color: var(--md-typeset-a-color);
  border-color: color-mix(in srgb, var(--md-typeset-a-color) 35%, transparent);
}

#zen-cursor-fx-toggle:focus-visible {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}

[data-md-color-scheme="slate"] #zen-cursor-fx-toggle {
  box-shadow: 0 0.1rem 0.4rem rgba(0, 0, 0, 0.35);
}

/* 左下角：返回上一页（与右下角光标开关错开） */
#zen-back-btn.zen-back-btn {
  position: fixed;
  left: 0.85rem;
  bottom: 0.85rem;
  z-index: 5;
  margin: 0;
  padding: 0.4rem 0.85rem;
  font: inherit;
  font-size: 0.82rem;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--md-default-fg-color);
  background: color-mix(in srgb, var(--md-default-bg-color--light) 88%, transparent);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 999px;
  box-shadow: 0 0.06rem 0.25rem rgba(10, 40, 70, 0.08);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
}

#zen-back-btn.zen-back-btn:hover {
  color: var(--md-typeset-a-color);
  border-color: color-mix(in srgb, var(--md-typeset-a-color) 35%, transparent);
  box-shadow: 0 0.12rem 0.45rem rgba(10, 50, 80, 0.12);
}

#zen-back-btn.zen-back-btn:focus-visible {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}

[data-md-color-scheme="slate"] #zen-back-btn.zen-back-btn {
  box-shadow: 0 0.1rem 0.4rem rgba(0, 0, 0, 0.35);
}

[data-md-color-scheme="slate"] #zen-back-btn.zen-back-btn:hover {
  box-shadow: 0 0.15rem 0.55rem rgba(0, 0, 0, 0.45);
}

@media (prefers-reduced-motion: reduce) {
  #zen-cursor-fx {
    display: none !important;
  }

  #zen-cursor-fx-toggle {
    display: none !important;
  }
}