/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --vp-c-bg:          #ffffff;
  --vp-c-bg-soft:     #f6f6f7;
  --vp-c-bg-mute:     #f0f0f0;
  --vp-c-bg-elv:      #ffffff;
  --vp-c-divider:     rgba(60,60,67,0.12);
  --vp-c-text-1:      rgba(60,60,67,0.86);
  --vp-c-text-2:      rgba(60,60,67,0.6);
  --vp-c-text-3:      rgba(60,60,67,0.33);
  --vp-c-brand-1:     #646cff;
  --vp-c-brand-2:     #747bff;
  --vp-c-brand-soft:  rgba(100,108,255,0.14);
  --vp-c-tip-1:       #009400;
  --vp-c-tip-soft:    rgba(16,185,129,0.1);
  --vp-c-warn-1:      #e95f00;
  --vp-c-warn-soft:   rgba(233,95,0,0.1);
  --vp-c-code-bg:     #f6f6f7;
  --vp-c-code-block-bg: #282c34;
  --vp-nav-height:    64px;
  --vp-sidebar-width: 272px;
  --vp-aside-width:   240px;
  --vp-font-family:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --vp-font-mono:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

.dark {
  --vp-c-bg:          #1b1b1f;
  --vp-c-bg-soft:     #252529;
  --vp-c-bg-mute:     #313136;
  --vp-c-bg-elv:      #252529;
  --vp-c-divider:     rgba(84,84,90,0.48);
  --vp-c-text-1:      rgba(255,255,245,0.86);
  --vp-c-text-2:      rgba(235,235,245,0.6);
  --vp-c-text-3:      rgba(235,235,245,0.38);
  --vp-c-brand-soft:  rgba(100,108,255,0.16);
  --vp-c-code-bg:     #313136;
  --vp-c-code-block-bg: #1e1e2e;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--vp-font-family);
  background: var(--vp-c-bg);
  color: var(--vp-c-text-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navbar ── */
.vp-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--vp-nav-height);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--vp-c-divider);
  transition: background 0.25s;
}
.dark .vp-nav { background: rgba(27,27,31,0.85); }

.vp-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--vp-nav-height);
  padding: 0 24px;
  max-width: 100%;
}
.vp-nav-bar-title { display: flex; align-items: center; }
.vp-nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--vp-c-text-1);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.logo-mark { color: var(--vp-c-brand-1); font-size: 18px; }
.vp-nav-bar-content { display: flex; align-items: center; gap: 8px; }
.vp-nav-menu { display: flex; align-items: center; gap: 4px; }
.vp-nav-link {
  padding: 0 12px;
  height: 36px;
  display: flex;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--vp-c-text-1);
  text-decoration: none;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.vp-nav-link:hover { color: var(--vp-c-brand-1); background: var(--vp-c-brand-soft); }
.vp-nav-divider { height: 1px; background: var(--vp-c-divider); }

.vp-appearance-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--vp-c-divider);
  background: transparent;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--vp-c-text-2);
  font-size: 16px;
  transition: color 0.2s, border-color 0.2s;
}
.vp-appearance-btn:hover { color: var(--vp-c-text-1); border-color: var(--vp-c-text-2); }

.vp-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  border: none; background: transparent; cursor: pointer; padding: 6px;
}
.vp-hamburger span {
  display: block; height: 2px; background: var(--vp-c-text-1);
  border-radius: 2px; transition: all 0.25s;
}
.vp-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.vp-hamburger.open span:nth-child(2) { opacity: 0; }
.vp-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Local nav ── */
.vp-local-nav {
  position: sticky;
  top: var(--vp-nav-height);
  z-index: 50;
  display: none;
  background: var(--vp-c-bg);
  border-bottom: 1px solid var(--vp-c-divider);
  height: 48px;
}
.vp-local-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 16px;
}
.vp-local-nav-menu {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--vp-c-text-1);
  background: transparent; border: none; cursor: pointer; padding: 4px 8px;
  border-radius: 6px;
}
.vp-local-nav-menu:hover { background: var(--vp-c-bg-soft); }
.vp-local-nav-outline button {
  display: flex; align-items: center; gap: 4px;
  font-size: 13px; color: var(--vp-c-text-2);
  background: transparent; border: none; cursor: pointer;
}

/* ── Layout ── */
.vp-layout {
  display: flex;
  padding-top: var(--vp-nav-height);
  min-height: 100vh;
}

/* ── Sidebar ── */
.vp-sidebar {
  position: fixed;
  top: var(--vp-nav-height);
  left: 0;
  width: var(--vp-sidebar-width);
  height: calc(100vh - var(--vp-nav-height));
  overflow-y: auto;
  background: var(--vp-c-bg-soft);
  border-right: 1px solid var(--vp-c-divider);
  z-index: 60;
  scrollbar-width: thin;
  scrollbar-color: var(--vp-c-divider) transparent;
}
.vp-sidebar::-webkit-scrollbar { width: 5px; }
.vp-sidebar::-webkit-scrollbar-thumb { background: var(--vp-c-divider); border-radius: 3px; }

.vp-sidebar-curtain { height: 32px; }
.vp-sidebar-nav { padding: 0 0 32px; }

.vp-sidebar-group { padding: 0 12px; }

.vp-sidebar-item--section { margin-bottom: 4px; }

.vp-sidebar-item-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.vp-sidebar-item-row:hover { background: var(--vp-c-bg-mute); }

.vp-sidebar-indicator {
  width: 2px; height: 14px;
  border-radius: 2px;
  background: transparent;
  flex-shrink: 0;
  transition: background 0.2s;
}
.vp-sidebar-item--section.has-active > .vp-sidebar-item-row .vp-sidebar-indicator {
  background: var(--vp-c-brand-1);
}

.vp-sidebar-text {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--vp-c-text-1);
  line-height: 1.4;
}

.vp-sidebar-caret {
  font-size: 10px;
  color: var(--vp-c-text-3);
  transition: transform 0.2s;
  display: inline-block;
}
.vp-sidebar-caret::before { content: '›'; font-size: 14px; }
.vp-sidebar-item--section.open > .vp-sidebar-item-row .vp-sidebar-caret { transform: rotate(90deg); }

.vp-sidebar-children {
  display: none;
  padding: 2px 0 4px 16px;
}
.vp-sidebar-item--section.open > .vp-sidebar-children { display: block; }

.vp-sidebar-link {
  display: block;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--vp-c-text-2);
  text-decoration: none;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  line-height: 1.5;
}
.vp-sidebar-link:hover { color: var(--vp-c-text-1); background: var(--vp-c-bg-mute); }
.vp-sidebar-link--active {
  color: var(--vp-c-brand-1) !important;
  border-left-color: var(--vp-c-brand-1);
  background: var(--vp-c-brand-soft);
  font-weight: 500;
}
.vp-sidebar-link--top {
  display: block;
  padding: 6px 8px;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--vp-c-text-1);
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.15s;
}
.vp-sidebar-link--top:hover { background: var(--vp-c-bg-mute); }

/* ── Content area ── */
.vp-content {
  flex: 1;
  min-width: 0;
  margin-left: var(--vp-sidebar-width);
}

.vp-doc-container {
  display: flex;
  justify-content: center;
}

/* ── Aside (outline) ── */
.vp-aside {
  order: 2;
  flex-shrink: 0;
  width: var(--vp-aside-width);
  position: sticky;
  top: var(--vp-nav-height);
  height: calc(100vh - var(--vp-nav-height));
  overflow-y: auto;
  scrollbar-width: none;
}
.vp-aside::-webkit-scrollbar { display: none; }
.vp-aside-curtain { height: 32px; }
.vp-aside-container { padding: 0 16px 32px; }

.vp-doc-aside-outline { position: relative; }
.outline-marker {
  position: absolute;
  left: -8px;
  top: 33px;
  width: 2px;
  height: 18px;
  background: var(--vp-c-brand-1);
  border-radius: 2px;
  transition: top 0.2s ease, opacity 0.2s;
  opacity: 0;
}
.outline-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--vp-c-text-1);
  padding: 0 0 8px;
  letter-spacing: 0.01em;
}
.outline-list {
  list-style: none;
  padding: 0;
}
.outline-list li { margin: 0; }
.outline-link {
  display: block;
  padding: 4px 0 4px 12px;
  font-size: 13px;
  color: var(--vp-c-text-2);
  text-decoration: none;
  border-left: 1px solid var(--vp-c-divider);
  line-height: 1.5;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.outline-link:hover { color: var(--vp-c-text-1); }
.outline-link.active {
  color: var(--vp-c-brand-1);
  border-left-color: var(--vp-c-brand-1);
  font-weight: 500;
}
.outline-list .nested { padding-left: 12px; }
.outline-list .nested .outline-link { font-size: 12px; }

/* ── Doc content ── */
.vp-doc-content {
  order: 1;
  flex: 1;
  min-width: 0;
  max-width: 752px;
  padding: 32px 48px 96px;
}

/* ── VitePress doc typography ── */
.vp-doc h1 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--vp-c-text-1);
  margin: 0 0 24px;
  padding-top: 8px;
}
.vp-doc h2 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--vp-c-text-1);
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--vp-c-divider);
}
.vp-doc h2:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.vp-doc h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--vp-c-text-1);
  margin: 32px 0 12px;
  line-height: 1.4;
}
.vp-doc p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--vp-c-text-1);
  margin: 0 0 16px;
}
.vp-doc a {
  color: var(--vp-c-brand-1);
  text-decoration: none;
  font-weight: 500;
}
.vp-doc a:hover { text-decoration: underline; }

.vp-doc code {
  font-family: var(--vp-font-mono);
  font-size: 0.875em;
  background: var(--vp-c-code-bg);
  color: var(--vp-c-brand-1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--vp-c-divider);
}
.dark .vp-doc code { color: #c9d1d9; }

.vp-doc ul, .vp-doc ol {
  padding-left: 1.5em;
  margin: 0 0 16px;
}
.vp-doc li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--vp-c-text-1);
  margin: 4px 0;
}

/* ── Tables ── */
.vp-doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 20px 0;
  display: block;
  overflow-x: auto;
}
.vp-doc thead tr { background: var(--vp-c-bg-soft); border-bottom: 2px solid var(--vp-c-divider); }
.vp-doc th {
  padding: 10px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  color: var(--vp-c-text-1);
  white-space: nowrap;
}
.vp-doc td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--vp-c-divider);
  color: var(--vp-c-text-1);
  vertical-align: middle;
}
.vp-doc tr:last-child td { border-bottom: none; }
.vp-doc tr:hover td { background: var(--vp-c-bg-soft); }

/* ── Custom blocks (tip / warning) ── */
.custom-block {
  padding: 16px 20px;
  border-radius: 8px;
  margin: 20px 0;
  border: 1px solid transparent;
}
.custom-block.tip {
  background: var(--vp-c-tip-soft);
  border-color: rgba(0,148,0,0.2);
}
.custom-block.warning {
  background: var(--vp-c-warn-soft);
  border-color: rgba(233,95,0,0.2);
}
.custom-block-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.custom-block.tip .custom-block-title { color: var(--vp-c-tip-1); }
.custom-block.warning .custom-block-title { color: var(--vp-c-warn-1); }
.custom-block p {
  font-size: 14px;
  margin: 0;
  line-height: 1.7;
}

/* ── Code blocks ── */
.language-bash,
.language-python,
.language-javascript,
.language-json,
.language-markdown {
  position: relative;
  background: var(--vp-c-code-block-bg);
  border-radius: 8px;
  margin: 16px 0;
  overflow: hidden;
}
.vp-adaptive-theme { border: 1px solid rgba(255,255,255,0.06); }
.dark .vp-adaptive-theme { border-color: rgba(255,255,255,0.08); }

.lang {
  position: absolute;
  top: 10px;
  left: 16px;
  font-family: var(--vp-font-mono);
  font-size: 11px;
  font-weight: 600;
  color: rgba(235,235,245,0.38);
  text-transform: lowercase;
  pointer-events: none;
  z-index: 1;
}

.vp-copy-btn {
  position: absolute;
  top: 8px;
  right: 10px;
  z-index: 2;
  padding: 4px 10px;
  font-size: 11px;
  font-family: var(--vp-font-family);
  font-weight: 500;
  color: rgba(235,235,245,0.5);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 5px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  opacity: 0;
}
.vp-adaptive-theme:hover .vp-copy-btn { opacity: 1; }
.vp-copy-btn:hover { color: rgba(235,235,245,0.9); background: rgba(255,255,255,0.12); }
.vp-copy-btn.copied { color: #4ade80; border-color: rgba(74,222,128,0.3); }

.vp-adaptive-theme pre {
  margin: 0;
  padding: 36px 20px 20px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.vp-adaptive-theme pre::-webkit-scrollbar { height: 4px; }
.vp-adaptive-theme pre::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.vp-adaptive-theme code {
  font-family: var(--vp-font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: #abb2bf;
  background: none;
  border: none;
  padding: 0;
  white-space: pre;
  display: block;
}

/* ── Doc footer ── */
.vp-doc-footer { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--vp-c-divider); }
.vp-doc-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.pager { flex: 1; }
.pager--next { text-align: right; }
.pager-link {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  border: 1px solid var(--vp-c-divider);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
  max-width: 280px;
  width: 100%;
}
.pager-link:hover { border-color: var(--vp-c-brand-1); background: var(--vp-c-brand-soft); }
.pager-desc { font-size: 12px; color: var(--vp-c-text-2); font-weight: 500; }
.pager-title { font-size: 14px; color: var(--vp-c-brand-1); font-weight: 600; }

/* ── Toast ── */
.vp-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--vp-c-text-1);
  color: var(--vp-c-bg);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
  white-space: nowrap;
}
.vp-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Responsive ── */
@media (max-width: 1280px) {
  .vp-aside { display: none; }
  .vp-doc-content { max-width: 100%; }
}

@media (max-width: 960px) {
  .vp-local-nav { display: flex; }
  .vp-sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 80;
  }
  .vp-sidebar.open { transform: translateX(0); }
  .vp-content { margin-left: 0; }
  .vp-doc-content { padding: 24px 24px 80px; }
  .vp-hamburger { display: flex; }
}

@media (max-width: 640px) {
  .vp-doc h1 { font-size: 24px; }
  .vp-doc h2 { font-size: 19px; }
  .vp-doc-content { padding: 20px 16px 80px; }
  .vp-doc-pager { flex-direction: column; }
  .pager-link { max-width: 100%; }
}