/* =========================================================
   Markdown Viewer Theme
   RTL • Dark • Teal • Smooth Animations
   ========================================================= */

:root {
  --bg: #07273b;
  --bg-deep: #041824;
  --bg-soft: #062030;
  --bg-hover: #092b42;
  --bg-hover-select: #2dd4bf;
  --text: #e2e8f0;
  --text-strong: #ffffff;
  --text-muted: #afc1ce;
  --primary: #2dd4bf;
  --primary-soft: rgba(45, 212, 191, 0.12);
  --primary-glow: rgba(45, 212, 191, 0.35);
  --border: #125667;
  --border-soft: rgba(18, 86, 103, 0.65);
  --selection-text: #041824;
  --grid-line: rgba(45, 212, 191, 0.035);
  --sidebar-bg: rgba(4, 24, 36, 0.94);
  --heading-muted: #c7cd8e;
  --heading-hover: #e2e8b0;
  --ordered-list-glow: rgba(45, 212, 191, 0.12);
  --inline-code-bg: #0a2f42;
  --inline-code-shadow: rgba(45, 212, 191, 0.25);
  --mermaid-control-bg: rgba(4, 24, 36, 0.92);
  --mermaid-control-text: var(--text-muted);
  --mermaid-control-shadow: transparent;
  --pre-bg: #041824;
  --pre-code-text: inherit;
  --pre-shadow: rgba(0, 0, 0, 0.35);
  --pre-hover-shadow: rgba(0, 0, 0, 0.45);
  --pre-hover-accent: rgba(45, 212, 191, 0.08);
  --code-copy-bg: rgba(4, 24, 36, 0.9);
  --code-copy-text: var(--text-muted);
  --code-copy-border: var(--border);
  --code-copy-hover-border: var(--primary);
  --code-copy-hover-bg: var(--bg-hover);
  --code-copy-hover-text: var(--text-strong);
  --code-copy-copied: var(--primary);
  --code-copy-copied-shadow: var(--primary-glow);
  --code-copy-shadow: rgba(0, 0, 0, 0.25);
  --blockquote-shadow: rgba(0, 0, 0, 0.25);
  --table-shadow: rgba(0, 0, 0, 0.3);
  --image-shadow: rgba(0, 0, 0, 0.35);
  --empty-shadow: rgba(45, 212, 191, 0.1);
  --toggle-shadow: rgba(0, 0, 0, 0.3);
  --toggle-hover-shadow: rgba(0, 0, 0, 0.35);
  --footer-hover-bg: #2d7f8c;
  --footer-hover-text: #ffffff;
  --footer-author-bg: var(--primary);
  --folders-border: var(--border);
  --folders-hover-border: var(--primary);
  --folders-hover-bg: var(--bg-hover);
  --folders-hover-text: var(--text-strong);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sidebar-width: 300px;
}

.light {
  --bg: #fff7ea;
  --bg-deep: #f1e7d5;
  --bg-soft: #ffffff;
  --bg-hover: #f7eedf;
  --bg-hover-select: #e2c38e;
  --text: #5f4d32;
  --text-strong: #3f301d;
  --text-muted: #6f5d42;
  --primary: #66502f;
  --primary-soft: rgba(102, 80, 47, 0.12);
  --primary-glow: rgba(102, 80, 47, 0.24);
  --border: #806d4d;
  --border-soft: rgba(101, 86, 62, 0.46);
  --selection-text: #4a3820;
  --grid-line: rgba(107, 98, 87, 0.045);
  --sidebar-bg: rgba(255, 255, 255, 0.96);
  --heading-muted: #3f301d;
  --heading-hover: #66502f;
  --ordered-list-glow: rgba(114, 96, 63, 0.1);
  --inline-code-bg: #f1e7d5;
  --inline-code-shadow: rgba(114, 96, 63, 0.18);
  --mermaid-control-bg: #ffffff;
  --mermaid-control-text: #66502f;
  --mermaid-control-shadow: rgba(102, 80, 47, 0.14);
  --pre-bg: #002c47;
  --pre-code-text: #e2e8f0;
  --pre-shadow: rgba(0, 0, 0, 0.35);
  --pre-hover-shadow: rgba(0, 0, 0, 0.45);
  --pre-hover-accent: rgba(102, 80, 47, 0.08);
  --code-copy-bg: rgba(4, 24, 36, 0.9);
  --code-copy-text: #afc1ce;
  --code-copy-border: #125667;
  --code-copy-hover-border: #2dd4bf;
  --code-copy-hover-bg: #092b42;
  --code-copy-hover-text: #ffffff;
  --code-copy-copied: #2dd4bf;
  --code-copy-copied-shadow: rgba(45, 212, 191, 0.35);
  --code-copy-shadow: rgba(54, 43, 28, 0.12);
  --blockquote-shadow: rgba(54, 43, 28, 0.12);
  --table-shadow: rgba(54, 43, 28, 0.18);
  --image-shadow: rgba(54, 43, 28, 0.16);
  --empty-shadow: rgba(114, 96, 63, 0.1);
  --toggle-shadow: rgba(54, 43, 28, 0.18);
  --toggle-hover-shadow: rgba(54, 43, 28, 0.16);
  --footer-hover-bg: #ffca28;
  --footer-hover-text: #4a3820;
  --footer-author-bg: #f4c95d;
  --folders-border: #806d4d;
  --folders-hover-border: #806d4d;
  --folders-hover-bg: #fffdf7;
  --folders-hover-text: #4a3820;
}

* {
  box-sizing: border-box;
}

*::selection {
  background: var(--bg-hover-select) !important;
  color: var(--selection-text) !important;
}

*::-moz-selection {
  background: var(--primary) !important;
  color: var(--selection-text) !important;
}

@keyframes mdFadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
    filter: blur(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes sidebarIn {
  from {
    opacity: 0;
    transform: translateX(-16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

html {
  min-height: 100%;
  background-color: var(--bg) !important;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px) !important;
  background-size: 26px 26px !important;
  scroll-behavior: smooth;
  transition: background-color 0.25s ease;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  line-height: 1.8;
  direction: rtl;
  text-align: right;
  overflow-x: hidden;
  transition:
    background-color 0.25s ease,
    color 0.25s ease;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  direction: ltr;
  transition: grid-template-columns 0.45s var(--ease);
}

.app-shell.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.site-footer {
  position: relative;
  z-index: 10;
  padding: 14px 18px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bg-deep) 76%, transparent),
    color-mix(in srgb, var(--bg-soft) 54%, transparent)
  );
  color: var(--text-muted);
  box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
  text-align: center;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  font-size: 14px;
}

.footer-author {
  padding: 5px 13px;
  border: 1px solid color-mix(in srgb, var(--footer-author-bg) 55%, transparent);
  border-radius: var(--radius-sm);
  background: var(--footer-author-bg);
  color: var(--selection-text);
  font-weight: 700;
  text-decoration: none;
  transition:
    background-color 0.25s ease,
    color 0.25s ease,
    border-color 0.25s ease,
    transform 0.25s var(--ease);
}

.footer-author:hover,
.footer-author:focus-visible {
  background: var(--footer-hover-bg);
  border-color: var(--footer-hover-bg);
  color: var(--footer-hover-text);
  outline: none;
  transform: translateY(-2px);
}

.footer-mobile-mark {
  display: none;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  direction: rtl;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-soft);
  backdrop-filter: blur(10px);
  z-index: 30;
  transition:
    opacity 0.3s ease,
    transform 0.45s var(--ease),
    border-color 0.3s ease,
    background-color 0.25s ease,
    color 0.25s ease;
  scrollbar-width: thin;
}

.sidebar.is-collapsed {
  opacity: 0;
  transform: translateX(-100%);
  pointer-events: none;
  border-right-color: transparent;
}

.brand-subtitle {
  margin-top: 2px;
  color: var(--mermaid-control-text);
  font-size: 12px;
}

.tree-toolbar {
  padding: 14px 14px 8px;
}

.folders-toggle {
  position: fixed;
  top: 114px;
  left: calc(var(--sidebar-width) - 20px);
  z-index: 100;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--folders-border);
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--primary);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  transition:
    left 0.45s var(--ease),
    opacity 0.25s ease,
    transform 0.25s var(--ease),
    border-color 0.25s ease,
    background-color 0.25s ease,
    color 0.25s ease;
}

.folders-toggle.is-sidebar-collapsed {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.folders-toggle .icon-expand {
  display: none;
}

.folders-toggle.is-expand-mode .icon-collapse {
  display: none;
}

.folders-toggle.is-expand-mode .icon-expand {
  display: block;
}

.folders-toggle:hover,
.folders-toggle:focus-visible {
  outline: none;
  border-color: var(--folders-hover-border);
  background: var(--folders-hover-bg);
  color: var(--folders-hover-text);
}

.theme-toggle {
  position: fixed;
  top: 66px;
  left: calc(var(--sidebar-width) - 20px);
  z-index: 100;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--primary);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  transition:
    left 0.45s var(--ease),
    opacity 0.25s ease,
    transform 0.25s var(--ease),
    border-color 0.25s ease,
    background-color 0.25s ease,
    color 0.25s ease;
}

.theme-toggle.is-sidebar-collapsed {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle.is-light .icon-moon {
  display: none;
}

.theme-toggle.is-light .icon-sun {
  display: block;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-hover);
  color: var(--text-strong);
}

.search-wrap {
  position: relative;
}

.search {
  width: 100%;
  padding: 9px 36px 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  background: var(--bg-soft);
  color: var(--text);
  direction: ltr;
  text-align: left;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    background-color 0.25s ease;
}

.search.is-rtl {
  padding-right: 11px;
  padding-left: 36px;
}

.search::-webkit-search-cancel-button {
  display: none;
}

.search-clear {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 21px;
  line-height: 1;
  transform: translateY(-50%);
}

.search.is-rtl + .search-clear {
  right: auto;
  left: 8px;
}

.search-clear[hidden] {
  display: none;
}

.search-clear:hover,
.search-clear:focus-visible {
  outline: none;
  color: var(--text-strong);
}

.search::placeholder {
  color: var(--text-muted);
}

.search:focus {
  border-color: var(--primary);
  background: var(--bg-hover);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.file-tree {
  padding: 4px 10px 18px;
}

.tree-level {
  padding-right: 10px;
}

.tree-root-folder {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-soft);
}

.tree-root-folder:first-child {
  margin-top: 4px;
}

.tree-folder:not(.tree-root-folder) {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-soft);
}

.tree-folder-summary,
.tree-file {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 6px 8px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  text-align: right;
  transition:
    transform 0.2s var(--ease),
    color 0.2s ease,
    background-color 0.2s ease;
}

.tree-rtl {
  direction: rtl;
  text-align: right;
}

.tree-ltr {
  direction: ltr;
  text-align: left;
}

.tree-level.tree-ltr {
  padding-right: 0;
  padding-left: 10px;
}

.tree-ltr .tree-folder-summary,
.tree-ltr .tree-file {
  text-align: left;
}

.tree-folder-summary:hover,
.tree-file:hover {
  transform: translateX(-3px);
  color: var(--text-strong);
  background: var(--bg-hover);
}

.tree-folder summary {
  list-style: none;
}

.tree-folder summary::-webkit-details-marker {
  display: none;
}

.tree-folder[open] > .tree-folder-summary .tree-chevron {
  transform: rotate(90deg);
}

.tree-chevron {
  width: 14px;
  color: var(--primary);
  transition: transform 0.25s var(--ease);
}

.tree-folder-icon,
.tree-file-icon {
  width: 20px;
  color: var(--primary);
  text-align: center;
  font-size: 12px;
}

.tree-file-icon {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--primary);
  font-size: 9px;
  font-weight: 700;
}

.tree-file.is-active {
  color: var(--text-strong);
  background: var(--primary-soft);
  box-shadow: inset -2px 0 0 var(--primary);
}

.tree-file.is-active .tree-file-icon {
  border-color: var(--primary);
  background: var(--bg-deep);
}

.tree-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-status {
  padding: 0 18px 16px;
  color: var(--text-muted);
  font-size: 11px;
  opacity: 0.8;
}

.tree-empty {
  margin: 14px 8px;
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-align: center;
  font-size: 13px;
}

.viewer-shell {
  position: relative;
  min-width: 0;
  direction: rtl;
}

.markdown-body {
  position: relative;
  width: min(100% - 70px, 1120px);
  /* border: 1px solid red; */
  min-height: 100vh;
  margin: 0 auto;
  padding: 35px 0 90px;
  color: var(--text) !important;
  font-size: 16px;
  line-height: 1.8;
  direction: rtl;
  text-align: right;
  animation: mdFadeIn 0.55s var(--ease) both;
  counter-reset: md-step;
  transition: color 0.25s ease;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  font-weight: 600 !important;
  border-bottom: none !important;
  margin-top: 34px !important;
  margin-bottom: 16px !important;
  transition:
    color 0.3s var(--ease),
    transform 0.3s var(--ease),
    text-shadow 0.3s var(--ease);
}

.markdown-body h1 {
  font-size: 2.2em !important;
  color: var(--primary) !important;
}

.markdown-body h1:hover {
  transform: translateX(-5px);
  text-shadow: 0 0 18px var(--primary-glow);
}

.markdown-body h2 {
  position: relative;
  padding-bottom: 9px !important;
  font-size: 1.6em !important;
  color: var(--primary) !important;
  border-bottom: 1px solid var(--border) !important;
}

.markdown-body h2::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 70px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  transform-origin: right;
  transform: scaleX(0);
  transition: transform 0.4s var(--ease);
}

.markdown-body h2:hover {
  transform: translateX(-4px);
  text-shadow: 0 0 14px var(--primary-glow);
}

.markdown-body h2:hover::after {
  transform: scaleX(1);
}

.markdown-body h3 {
  font-size: 1.3em !important;
  color: var(--heading-muted) !important;
}

.markdown-body h3:hover {
  transform: translateX(-3px);
  color: var(--heading-hover) !important;
}

.markdown-body a {
  color: var(--primary) !important;
  text-decoration: none !important;
  transition:
    color 0.25s ease,
    text-shadow 0.25s ease;
}

.markdown-body a:hover {
  color: var(--text-strong) !important;
  text-shadow: 0 0 10px var(--primary-glow);
}

.markdown-body strong {
  color: var(--text-strong) !important;
  font-weight: 700 !important;
  transition:
    color 0.2s ease,
    text-shadow 0.2s ease;
}

.markdown-body strong:hover {
  color: var(--primary) !important;
}

.markdown-body ul {
  padding-right: 25px !important;
  padding-left: 0 !important;
  margin: 0 0 18px;
  direction: rtl;
}

.markdown-body ul > li {
  margin-bottom: 10px !important;
  color: var(--text) !important;
  direction: rtl;
  text-align: right;
  transition:
    color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.markdown-body ul > li:hover {
  color: var(--text-strong) !important;
  transform: translateX(-5px);
}

.markdown-body ol {
  list-style: none !important;
  padding: 0 !important;
  margin: 26px 0 !important;
  direction: rtl;
}

.markdown-body > ol {
  counter-reset: md-step;
}

.markdown-body ol > li {
  counter-increment: md-step;
  position: relative;
  padding-right: 48px !important;
  padding-left: 0 !important;
  padding-bottom: 26px !important;
  margin-bottom: 0 !important;
  direction: rtl;
  text-align: right;
  border-right: 2px dotted var(--border);
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s var(--ease);
}

.markdown-body ol > li:hover {
  transform: translateX(-4px);
  border-right-color: var(--primary);
}

.markdown-body ol > li:last-child {
  border-right-color: transparent !important;
  padding-bottom: 10px !important;
}

.markdown-body ol > li::before {
  content: counter(md-step);
  position: absolute;
  right: -15px;
  top: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  border: 2px solid var(--primary);
  border-radius: 50%;
  background: var(--bg-deep);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  transition:
    transform 0.4s var(--ease),
    color 0.3s ease,
    background-color 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.4s ease;
}

.markdown-body ol > li:hover::before {
  transform: scale(1.18) rotate(360deg);
  background: var(--bg);
  color: var(--text-strong);
  border-color: var(--primary);
  box-shadow:
    0 0 16px var(--primary-glow),
    0 0 28px var(--ordered-list-glow);
}

.markdown-body :not(pre) > code {
  display: inline-block;
  padding: 2px 7px !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm);
  background: var(--inline-code-bg) !important;
  color: var(--primary) !important;
  font-family:
    "Fira Code", "JetBrains Mono", Consolas, Monaco, monospace !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  direction: ltr;
  unicode-bidi: isolate;
  vertical-align: middle;
  transition:
    transform 0.25s var(--ease),
    background-color 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease;
}

.markdown-body :not(pre) > code:hover {
  transform: translateY(-2px) scale(1.04);
  background: var(--border) !important;
  border-color: var(--primary) !important;
  color: var(--text-strong) !important;
  box-shadow: 0 4px 12px var(--inline-code-shadow);
}

.code-wrap {
  position: relative;
  margin: 22px 0 !important;
  direction: ltr;
}

.mermaid-wrap {
  position: relative;
  margin: 22px 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-deep);
  direction: ltr;
}

.mermaid-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  display: flex;
  gap: 5px;
}

.mermaid-controls button {
  min-width: 34px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--mermaid-control-bg);
  color: var(--mermaid-control-text);
  box-shadow: 0 2px 8px var(--mermaid-control-shadow);
  cursor: pointer;
  font-weight: 700;
}

.mermaid-controls button:hover,
.mermaid-controls button:focus-visible {
  outline: none;
  border-color: var(--primary);
  color: var(--text-strong);
}

.markdown-body pre.mermaid {
  min-height: 220px;
  display: grid;
  place-items: center;
  margin: 0 !important;
  padding: 54px 20px 20px !important;
  overflow: hidden !important;
  border: 0 !important;
  background: transparent !important;
  cursor: grab;
  touch-action: none;
}

.markdown-body pre.mermaid.is-dragging {
  cursor: grabbing;
}

.markdown-body pre.mermaid.is-pan-mode {
  cursor: grab;
}

.markdown-body pre.mermaid svg {
  max-width: none;
  transform-origin: center;
  transition: transform 0.16s ease-out;
  user-select: none;
}

.markdown-body pre.mermaid.is-dragging svg {
  transition: none;
}

.markdown-body pre.mermaid-error {
  color: var(--text-muted);
  white-space: pre-wrap;
}

.markdown-body pre {
  margin: 0 !important;
  padding: 52px 20px 20px !important;
  overflow-x: auto !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md);
  background: var(--pre-bg) !important;
  box-shadow: 0 6px 18px var(--pre-shadow) !important;
  direction: ltr !important;
  text-align: left !important;
  transition:
    transform 0.35s var(--ease),
    border-color 0.35s ease,
    box-shadow 0.35s ease,
    background-color 0.25s ease,
    color 0.25s ease;
}

.markdown-body pre:hover {
  transform: translateY(-3px);
  border-color: var(--primary) !important;
  box-shadow:
    0 12px 30px var(--pre-hover-shadow),
    0 0 0 1px var(--pre-hover-accent);
}

.markdown-body pre > code {
  display: block !important;
  padding: 0 !important;
  background: none !important;
  border: none !important;
  color: var(--pre-code-text) !important;
  font-family:
    "Fira Code", "JetBrains Mono", Consolas, Monaco, monospace !important;
  font-size: 14px !important;
  direction: ltr !important;
}

.code-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--code-copy-border);
  border-radius: var(--radius-sm);
  background: var(--code-copy-bg);
  color: var(--code-copy-text);
  cursor: pointer;
  transition:
    transform 0.25s var(--ease),
    color 0.25s ease,
    border-color 0.25s ease,
    background-color 0.25s ease,
    box-shadow 0.25s ease;
}

.code-copy svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.code-copy:hover,
.code-copy:focus-visible {
  outline: none;
  transform: translateY(-2px);
  border-color: var(--code-copy-hover-border);
  background: var(--code-copy-hover-bg);
  color: var(--code-copy-hover-text);
  box-shadow: 0 6px 15px var(--code-copy-shadow);
}

.code-copy.is-copied {
  color: var(--code-copy-copied);
  border-color: var(--code-copy-copied);
  box-shadow: 0 0 14px var(--code-copy-copied-shadow);
}

.markdown-body blockquote {
  margin: 20px 0 !important;
  padding: 14px 20px !important;
  border-right: 4px solid var(--primary) !important;
  border-left: none !important;
  border-radius: var(--radius-sm);
  background: var(--bg-soft) !important;
  color: var(--heading-muted) !important;
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s ease,
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

.markdown-body blockquote:hover {
  transform: translateX(-5px);
  border-right-color: var(--primary) !important;
  background: var(--bg-hover) !important;
  box-shadow: 0 6px 18px var(--blockquote-shadow);
}

.markdown-body table {
  width: 100% !important;
  margin: 22px 0 !important;
  border-collapse: collapse !important;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.markdown-body table:hover {
  box-shadow: 0 8px 24px var(--table-shadow);
}

.markdown-body th,
.markdown-body td {
  padding: 12px 15px !important;
  border: 1px solid var(--border) !important;
  text-align: right !important;
  transition:
    background-color 0.25s ease,
    color 0.25s ease;
}

.markdown-body th {
  background: var(--border) !important;
  color: var(--text-strong) !important;
  font-weight: 600 !important;
}

.markdown-body tr:nth-child(even) td {
  background: var(--bg-deep);
}

.markdown-body tr:hover td {
  background: var(--primary-soft) !important;
  color: var(--text-strong);
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  /* display: block;
  margin: 1.5rem auto; */
  border: 2px solid var(--primary);
  border-radius: var(--radius-md);
  cursor: pointer;

  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);

  animation: imageEntrance 0.5s ease-out;

  transition:
    transform 0.35s cubic-bezier(0.25, 1, 0.5, 1),
    box-shadow 0.35s ease,
    border-color 0.35s ease;
}

.markdown-body img:hover {
  transform: translateY(-6px) scale(1.015);

  border-color: var(--primary);

  box-shadow:
    0 18px 36px rgba(0, 0, 0, 0.5),
    0 0 20px rgba(27, 133, 118, 0.3);
}

img[alt="right" i] {
    display: block !important;
    margin-left: auto !important;
    margin-right: 0 !important;
}

img[alt="center" i] {
    display: block !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

img[alt="left" i] {
    display: block !important;
    margin-right: auto !important;
    margin-left: 0 !important;
}

.markdown-body hr {
  height: 1px;
  margin: 30px 0;
  border: none;
  background: linear-gradient(to left, transparent, var(--border), transparent);
}

.empty-state,
.error-state {
  min-height: 75vh;
  display: grid;
  place-content: center;
  gap: 10px;
  text-align: center;
}

.empty-state h1,
.error-state h1 {
  margin: 0 !important;
}

.empty-icon,
.error-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 4px;
  display: grid;
  place-items: center;
  border: 1px solid var(--primary);
  border-radius: 16px;
  background: var(--primary-soft);
  color: var(--primary);
  font:
    700 24px/1 Consolas,
    monospace;
  box-shadow: 0 0 30px var(--empty-shadow);
}

.error-icon {
  font-family: inherit;
}

.empty-state p,
.error-state p {
  color: var(--text-muted);
  margin: 0;
}

.sidebar-toggle {
  position: fixed;
  top: 18px;
  left: calc(var(--sidebar-width) - 20px);
  z-index: 100;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-deep);
  color: var(--primary);
  cursor: pointer;
  font-size: 23px;
  line-height: 1;
  box-shadow: 0 8px 22px var(--toggle-shadow);
  transition:
    left 0.45s var(--ease),
    transform 0.25s var(--ease),
    color 0.25s ease,
    border-color 0.25s ease,
    background-color 0.25s ease,
    box-shadow 0.25s ease;
}

.sidebar-toggle:hover,
.sidebar-toggle:focus-visible {
  outline: none;
  transform: scale(1.08);
  border-color: var(--primary);
  background: var(--bg-hover);
  color: var(--text-strong);
  box-shadow:
    0 10px 26px var(--toggle-hover-shadow),
    0 0 16px var(--primary-glow);
}

.sidebar-toggle.is-collapsed {
  left: 18px;
}

.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transform: scaleX(0.3);
  transform-origin: center;
  transition: opacity 0.2s ease;
}

.loading-bar.is-visible {
  opacity: 1;
  animation: loading 0.9s ease-in-out infinite alternate;
}

@keyframes loading {
  from {
    transform: scaleX(0.2);
  }
  to {
    transform: scaleX(1);
  }
}

.scroll-top {
  position: fixed;
  left: 20px;
  bottom: 20px;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--primary);
  cursor: pointer;
  z-index: 90;
  opacity: 0;
  transform: translateY(18px) scale(0.86);
  pointer-events: none;
  transition:
    opacity 0.35s ease,
    transform 0.35s var(--ease);
}

.scroll-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.scroll-top:hover,
.scroll-top:focus-visible {
  outline: none;
  transform: translateY(-3px) scale(1.06);
}

.scroll-progress {
  position: absolute;
  inset: 0;
  width: 58px;
  height: 58px;
  transform: rotate(-90deg);
  filter: drop-shadow(0 0 8px var(--primary-glow));
}

.scroll-progress circle {
  fill: var(--bg-deep);
  stroke-width: 3;
}

.progress-track {
  stroke: var(--border);
}

.progress-value {
  fill: var(--bg-deep) !important;
  stroke: var(--primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.15s linear;
}

.scroll-arrow {
  position: relative;
  z-index: 2;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--bg-deep);
  color: var(--text-strong);
  font-size: 19px;
  font-weight: 700;
  transition:
    color 0.25s ease,
    transform 0.25s ease;
}

.scroll-top:hover .scroll-arrow {
  color: var(--primary);
  transform: translateY(-2px);
}

body::-webkit-scrollbar,
*::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}

body::-webkit-scrollbar-track,
*::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

body::-webkit-scrollbar-thumb,
*::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 10px;
  transition: background 0.25s ease;
}

body::-webkit-scrollbar-thumb:hover,
*::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

@media (max-width: 900px) {
  :root {
    --sidebar-width: min(300px, 82vw);
  }

  .app-shell {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  }

  .app-shell.sidebar-collapsed {
    grid-template-columns: 0 minmax(0, 1fr);
  }

  .markdown-body {
    width: 100%;
    padding: 28px 17px 90px;
  }
}

@media (max-width: 620px) {
  .sidebar-toggle {
    top: 12px;
    width: 38px;
    height: 38px;
  }

  .sidebar-toggle.is-collapsed {
    left: 12px;
  }

  .markdown-body {
    width: 100%;
    padding-inline: 13px;
    padding-bottom: 78px;
    font-size: 15px;
  }

  .app-shell.mobile-content-blocked .markdown-body {
    display: none;
  }

  .markdown-body h1 {
    font-size: 1.9em !important;
  }

  .markdown-body h2 {
    font-size: 1.45em !important;
  }

  .scroll-top {
    left: 14px;
    bottom: 14px;
    width: 52px;
    height: 52px;
  }

  .scroll-progress {
    width: 52px;
    height: 52px;
  }

  .scroll-arrow {
    width: 29px;
    height: 29px;
    font-size: 17px;
  }

  .site-footer {
    padding: 12px 13px;
  }

  .app-shell.mobile-content-blocked + .site-footer {
    display: none;
  }

  .footer-copyright {
    display: none;
  }

  .footer-mobile-mark {
    display: inline;
  }
}

.markdown-body.rtl {
  direction: rtl;
  text-align: right;
}

.markdown-body.ltr {
  direction: ltr;
  text-align: left;
}

/* Keep the h2 hover accent opposite to the document reading direction. */
.markdown-body.ltr h2::after {
  right: auto;
  left: 0;
  transform-origin: left;
}

.markdown-body.rtl h2::after {
  right: 0;
  left: auto;
  transform-origin: right;
}

.markdown-body.ltr ul,
.markdown-body.ltr ol,
.markdown-body.ltr li {
  direction: ltr;
  text-align: left;
}

.markdown-body.ltr ul {
  padding-right: 0 !important;
  padding-left: 25px !important;
}

.markdown-body.ltr th,
.markdown-body.ltr td {
  text-align: left !important;
}

.markdown-body.ltr ol > li {
  padding-right: 0 !important;
  padding-left: 48px !important;
  border-right: none;
  border-left: 2px dotted var(--border);
}

.markdown-body.ltr ol > li:last-child {
  border-left-color: transparent !important;
}

.markdown-body.ltr ol > li::before {
  right: auto;
  left: -15px;
}