:root {
  --bg: #0f1720;
  --card: #0b1220;
  --muted: #93a3b5;
  --accent: #7dd3fc;
  --accent-2: #60a5fa;
  --glass: rgba(255, 255, 255, 0.03);
  --radius: 12px;
  --max-width: 980px;
  --hf-left: #ff6a00; /* orange */
  --hf-right: #8b5cf6; /* purple */
  --bg-dark: #071126;
}

* {
  box-sizing: border-box;
}
html,
body,
#content {
  height: 100%;
}
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, #071126 0%, #071b2a 100%);
  color: #e6eef6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
  line-height: 1.6;
  /* Improve mobile scrolling performance */
  -webkit-overflow-scrolling: touch;
  /* Prevent font size adjustment on orientation change */
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

.site {
  display: flex;
  min-height: 100vh;
}

/* Mobile-first responsive site layout */
@media (max-width: 900px) {
  .site {
    flex-direction: column;
  }
}

/* Top navigation */
/* --- Original & Base Styles --- */
.topnav {
  background: linear-gradient(90deg, var(--hf-left), var(--hf-right));
  color: #fff;
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 60;
  box-shadow: 0 6px 24px rgba(11, 17, 40, 0.5);
}
.topnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topnav .brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-links {
  display: flex;
  gap: 18px;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
  transition: background 0.18s ease;
}
.nav-links a:hover {
  background: rgba(255, 255, 255, 0.06);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-btn {
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 2.05rem;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}
.nav-cta {
  background: #021025;
  color: #fff;
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
}

#hamburger {
  display: none;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  #hamburger {
    display: block;
  }
}

@media (max-width: 480px) {
  #nav-search-btn {
    display: none;
  }
}
/* Sidebar */
.sidebar {
  width: 300px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
  border-right: 1px solid rgba(255, 255, 255, 0.03);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: width 0.35s cubic-bezier(0.2, 0.9, 0.2, 1), transform 0.35s ease;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.sidebar.collapsed {
  width: 70px;
}

/* Mobile sidebar adjustments */
@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    height: 100vh;
    transform: translateX(-100%);
    background: linear-gradient(
      180deg,
      rgba(11, 18, 32, 0.98),
      rgba(11, 18, 32, 0.95)
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
  }

  .sidebar:not(.collapsed) {
    transform: translateX(0);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
  }
}
.brand a {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
}

.search-wrapper {
  position: relative;
}
.search-wrapper input {
  width: 100%;
  padding: 10px 36px 10px 12px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--muted);
  border-radius: 8px;
  outline: none;
  transition: box-shadow 0.2s ease, transform 0.12s ease;
}
.search-wrapper input:focus {
  box-shadow: 0 6px 20px rgba(96, 165, 250, 0.12);
  transform: translateY(-1px);
}
.search-ico {
  position: absolute;
  right: 10px;
  top: 8px;
  width: 20px;
  height: 20px;
  fill: var(--muted);
  opacity: 0.7;
}

.toc {
  flex: 1;
  overflow: auto;
}
.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.toc-item a {
  display: block;
  padding: 8px 10px;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.15s ease, color 0.15s ease,
    transform 0.18s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.toc-item a:hover {
  background: rgba(125, 211, 252, 0.06);
  color: var(--accent);
  transform: translateX(4px);
}
.toc-item.toc-h1 a {
  font-weight: 700;
}
.toc-item.toc-h2 a {
  padding-left: 14px;
}
.toc-item.toc-h3 a {
  padding-left: 26px;
  font-size: 0.95em;
}
.toc-item.dim a {
  opacity: 0.45;
  transform: none;
}

.toc-empty {
  color: var(--muted);
  font-style: italic;
}

.toc-toggle {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px;
  cursor: pointer;
}
.sidebar-footer {
  display: flex;
  gap: 8px;
  align-items: center;
}
.sidebar-footer .btn {
  display: inline-block;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--accent-2);
  border-radius: 8px;
  text-decoration: none;
}

/* Content */
.content {
  flex: 1;
  padding: 20px;
  display: flex;
  justify-content: center;
}
.content-inner {
  width: 100%;
  max-width: var(--max-width);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.01), transparent);
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(2, 6, 23, 0.6);
  transition: box-shadow 0.36s ease, transform 0.36s ease;
}
.content-inner:hover {
  box-shadow: 0 18px 60px rgba(2, 6, 23, 0.7);
  transform: translateY(-2px);
}

/* Desktop specific styles */
@media (min-width: 901px) {
  .content {
    padding: 36px 48px;
  }

  .content-inner {
    padding: 36px;
  }
}

/* Decorative background gradient blob */
.bg-decor {
  position: absolute;
  left: 50%;
  top: 4%;
  width: 720px;
  height: 420px;
  transform: translateX(-50%);
  background: radial-gradient(
      circle at 20% 30%,
      rgba(125, 211, 252, 0.06),
      transparent 25%
    ),
    radial-gradient(
      circle at 80% 70%,
      rgba(96, 165, 250, 0.05),
      transparent 30%
    );
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}
.content-inner {
  position: relative;
  z-index: 2;
}

@media (max-width: 900px) {
  .bg-decor {
    display: none;
  }
}

/* Animations */
.fade-in {
  animation: fadeIn 0.6s ease both;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.toc-item {
  animation: slideInLeft 0.36s ease both;
}

/* Article styles */
#article h1 {
  font-size: 28px;
  margin-top: 0;
}
#article h2 {
  margin-top: 28px;
}
#article p {
  color: var(--muted);
  line-height: 1.7;
}
#article table {
  width: 100%;
  border-collapse: collapse;
}
#article table th,
#article table td {
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 8px;
  color: var(--muted);
}
#article a {
  color: var(--accent);
  text-decoration: none;
}

/* Code blocks */
pre {
  border-radius: 12px;
  overflow: auto;
  padding: 16px;
  background: #010617;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono",
    "Courier New", monospace;
  font-size: 0.95em;
}

/* Heading anchors */
.heading-anchor {
  margin-left: 8px;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity 0.12s ease, transform 0.12s ease;
  color: var(--muted);
  text-decoration: none;
}
#article h1:hover .heading-anchor,
#article h2:hover .heading-anchor,
#article h3:hover .heading-anchor {
  opacity: 1;
  transform: none;
}

/* Mark highlight for search */
mark {
  background: linear-gradient(
    90deg,
    rgba(125, 211, 252, 0.16),
    rgba(96, 165, 250, 0.12)
  );
  padding: 2px 4px;
  border-radius: 4px;
}

/* Responsive Design - Mobile First Approach */

/* Small mobile devices (320px - 480px) */
@media (max-width: 480px) {
  .topnav {
    padding: 8px 12px !important;
  }

  .topnav-inner {
    padding: 0 4px !important;
  }

  .brand {
    font-size: 0.9rem !important;
  }

  .nav-cta {
    padding: 6px 8px !important;
    font-size: 0.85rem !important;
  }

  #nav-search-btn {
    display: none !important;
  }

  .sidebar {
    width: 280px !important;
    padding: 16px !important;
  }

  .content {
    padding: 12px !important;
  }

  .content-inner {
    padding: 16px !important;
    border-radius: 12px !important;
  }

  #article h1 {
    font-size: 22px !important;
    line-height: 1.3 !important;
  }

  #article h2 {
    font-size: 18px !important;
    margin-top: 20px !important;
  }

  #article h3 {
    font-size: 16px !important;
  }

  #article p {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  pre {
    padding: 12px !important;
    font-size: 12px !important;
    overflow-x: auto !important;
  }

  .toc-item a {
    padding: 6px 8px;
    font-size: 14px;
  }

  .search-wrapper input {
    padding: 8px 32px 8px 10px;
    font-size: 14px;
  }
}

/* Large mobile devices and small tablets (481px - 768px) */
@media (max-width: 768px) {
  .nav-links {
    display: none !important;
  }

  #hamburger {
    display: block !important;
  }

  .sidebar {
    width: 300px !important;
    padding: 18px !important;
  }

  .content {
    padding: 16px !important;
  }

  .content-inner {
    padding: 20px !important;
  }

  #article h1 {
    font-size: 24px !important;
  }

  #article h2 {
    font-size: 20px !important;
  }

  #article p {
    font-size: 15px !important;
  }

  .toc-item a {
    padding: 7px 9px !important;
  }
}

/* Tablets and small desktops (769px - 900px) */
@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    z-index: 30;
    left: 0;
    top: 0;
    height: 100vh;
    transform: translateX(-8px);
    background: linear-gradient(
      180deg,
      rgba(11, 18, 32, 0.95),
      rgba(11, 18, 32, 0.98)
    );
    transition: transform 0.28s cubic-bezier(0.2, 0.9, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
  }

  .sidebar:not(.collapsed) {
    transform: translateX(0);
  }

  .content {
    padding: 20px;
    width: 100%;
  }

  .sidebar.collapsed + .content {
    padding-left: 20px;
  }

  .topnav-inner {
    padding: 0 8px;
  }

  .nav-links {
    display: none;
  }

  .bg-decor {
    display: none;
  }
}

/* Medium screens (901px - 1200px) */
@media (min-width: 901px) and (max-width: 1200px) {
  .sidebar {
    width: 280px;
  }

  .content {
    padding: 32px 36px;
  }

  .content-inner {
    padding: 32px;
  }
}

/* Logo blob animation */
.logo-blob {
  display: inline-block;
  vertical-align: middle;
  width: 12px;
  height: 12px;
  margin-right: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #7dd3fc, #60a5fa);
  box-shadow: 0 6px 18px rgba(96, 165, 250, 0.12);
  animation: blob 3.6s infinite ease-in-out;
}
@keyframes blob {
  0% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-3px) scale(1.06);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

/* Mobile-friendly touch targets and interaction improvements */
@media (max-width: 768px) {
  /* Increase touch target sizes for better mobile interaction */
  .nav-btn {
    padding: 12px;
    font-size: 1.8rem;
  }

  .toc-item a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Improve button sizing */
  .nav-cta {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Better table handling on mobile */
  #article table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  #article table th,
  #article table td {
    padding: 12px 8px;
    min-width: 120px;
  }

  /* Improve code block readability */
  pre {
    font-size: 13px;
    line-height: 1.4;
    white-space: pre;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Better link spacing */
  #article a {
    padding: 2px 0;
    display: inline-block;
  }

  /* Improved search input */
  .search-wrapper input {
    height: 44px;
    -webkit-appearance: none;
    appearance: none;
  }

  /* Better spacing for content */
  #article {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  #article img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 16px auto;
  }
}

/* Landscape orientation adjustments for mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .sidebar {
    width: 260px;
  }

  .content {
    padding: 12px;
  }

  .content-inner {
    padding: 20px;
  }
}

/* High DPI displays - ensure crisp text and elements */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .logo-blob {
    border-radius: 50%;
    background-size: contain;
  }
}

/* Dark mode improvements for mobile */
@media (max-width: 768px) and (prefers-color-scheme: dark) {
  .sidebar {
    background: linear-gradient(
      180deg,
      rgba(7, 17, 38, 0.98),
      rgba(7, 17, 38, 0.95)
    );
  }

  .content-inner {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.015),
      transparent
    );
  }
}

/* subtle header shadow */
.content-inner {
  transition: box-shadow 0.36s ease, transform 0.36s ease;
}
.content-inner:hover {
  box-shadow: 0 18px 60px rgba(2, 6, 23, 0.7);
  transform: translateY(-2px);
}

.error-panel {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
  padding: 18px;
  border-radius: 12px;
  color: var(--muted);
}

/* Mobile Performance and Accessibility Improvements */
/* CRITICAL MOBILE FIXES - High Priority */
@media (max-width: 900px) {
  /* Fix main layout for mobile */
  .site {
    flex-direction: column !important;
  }

  /* Sidebar mobile behavior */
  .sidebar {
    position: fixed !important;
    z-index: 1000 !important;
    left: 0 !important;
    top: 0 !important;
    height: 100vh !important;
    width: 280px !important;
    transform: translateX(-100%) !important;
    background: linear-gradient(
      180deg,
      rgba(11, 18, 32, 0.98),
      rgba(11, 18, 32, 0.95)
    ) !important;
    backdrop-filter: blur(10px) !important;
    -webkit-backdrop-filter: blur(10px) !important;
    transition: transform 0.3s ease !important;
    padding: 16px !important;
  }

  .sidebar:not(.collapsed) {
    transform: translateX(0) !important;
  }

  .sidebar.collapsed {
    transform: translateX(-100%) !important;
  }

  /* Content mobile adjustments */
  .content {
    padding: 16px !important;
    width: 100% !important;
    flex: 1 !important;
  }

  .content-inner {
    padding: 20px !important;
    border-radius: 12px !important;
    max-width: 100% !important;
  }

  /* Navigation mobile fixes */
  .topnav {
    padding: 8px 16px !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 999 !important;
  }

  .topnav-inner {
    padding: 0 !important;
  }

  .nav-links {
    display: none !important;
  }

  #hamburger {
    display: block !important;
  }

  /* Typography mobile adjustments */
  #article h1 {
    font-size: 24px !important;
    line-height: 1.3 !important;
  }

  #article h2 {
    font-size: 20px !important;
    margin-top: 24px !important;
  }

  #article h3 {
    font-size: 18px !important;
  }

  #article p {
    font-size: 15px !important;
    line-height: 1.6 !important;
    color: #cbd5e1 !important;
  }

  /* Code blocks mobile */
  pre {
    padding: 16px !important;
    font-size: 13px !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }

  /* Tables mobile handling */
  #article table {
    display: block !important;
    overflow-x: auto !important;
    white-space: nowrap !important;
    -webkit-overflow-scrolling: touch !important;
  }

  /* Touch targets */
  .toc-item a {
    min-height: 44px !important;
    display: flex !important;
    align-items: center !important;
    padding: 8px 12px !important;
  }

  .nav-btn {
    padding: 12px !important;
    font-size: 1.5rem !important;
  }

  .nav-cta {
    min-height: 44px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 8px 12px !important;
  }
}

@media (max-width: 480px) {
  .sidebar {
    width: 260px !important;
    padding: 12px !important;
  }

  .content {
    padding: 12px !important;
  }

  .content-inner {
    padding: 16px !important;
  }

  .topnav {
    padding: 6px 12px !important;
  }

  .brand {
    font-size: 0.9rem !important;
  }

  .nav-cta {
    padding: 6px 8px !important;
    font-size: 0.85rem !important;
  }

  #nav-search-btn {
    display: none !important;
  }

  #article h1 {
    font-size: 20px !important;
  }

  #article h2 {
    font-size: 18px !important;
  }

  #article p {
    font-size: 14px !important;
  }

  pre {
    padding: 12px !important;
    font-size: 12px !important;
  }
}

/* Mobile overlay for sidebar */
@media (max-width: 900px) {
  .sidebar:not(.collapsed)::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .logo-blob,
  .content-inner,
  .sidebar,
  .toc-item a,
  .nav-links a {
    animation: none;
    transition: none;
  }

  .blob,
  .float,
  .shine {
    animation: none;
  }
}

/* Improve focus indicators for keyboard navigation */
@media (max-width: 768px) {
  .nav-btn:focus,
  .toc-item a:focus,
  .nav-links a:focus,
  .nav-cta:focus,
  .search-wrapper input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* Ensure minimum contrast for better readability */
  #article p {
    color: #cbd5e1;
    font-size: 15px;
    line-height: 1.7;
  }

  /* Better focus management for sidebar */
  .sidebar:focus-within {
    z-index: 40;
  }

  /* Improve button spacing on mobile */
  .nav-actions {
    gap: 8px;
  }

  /* Better handling of long content */
  .content-inner {
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
  }
}

/* Ultra-wide mobile screens (large phones in landscape) */
@media (max-width: 926px) and (orientation: landscape) {
  .sidebar {
    width: 240px;
  }

  .topnav {
    padding: 6px 16px;
  }
}

/* Very small screens optimization */
@media (max-width: 360px) {
  .brand {
    font-size: 0.85rem;
  }

  .nav-cta {
    padding: 5px 6px;
    font-size: 0.8rem;
  }

  .sidebar {
    width: 260px;
    padding: 12px;
  }

  .content {
    padding: 8px;
  }

  .content-inner {
    padding: 16px;
  }

  #article h1 {
    font-size: 20px;
  }

  #article h2 {
    font-size: 17px;
  }

  #article p {
    font-size: 14px;
  }
}

/* Mobile-responsive footer styles */
@media (max-width: 768px) {
  .site-footer {
    padding: 24px 0 16px;
    margin-top: 32px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
    margin-bottom: 8px;
  }

  .footer-brand .logo-blob {
    width: 2em;
    height: 2em;
  }

  .footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 12px;
  }

  .footer-links {
    align-items: center;
    gap: 12px;
  }

  .footer-socials {
    align-items: center;
    gap: 12px;
  }

  .footer-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
  }

  .footer-bottom {
    padding: 12px 16px 0;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .footer-inner {
    padding: 0 12px;
    gap: 20px;
  }

  .footer-col h4 {
    font-size: 1rem;
  }

  .footer-title {
    font-size: 1.1rem;
  }

  .footer-desc {
    font-size: 0.9rem;
  }

  .footer-links a,
  .footer-socials a {
    font-size: 0.9rem;
  }
}

[data-theme="light"] {
  --bg: #f8fafc;
  --card: #ffffff;
  --muted: #475569;
  --accent: #2563eb;
  --accent-2: #3b82f6;
  --glass: rgba(0, 0, 0, 0.03);
  --bg-dark: #e2e8f0;
}

[data-theme="light"] body {
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
  color: #1e293b;
}

[data-theme="light"] .topnav {
  background: linear-gradient(90deg, #f97316, #a855f7);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .sidebar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
  border-right: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .search-wrapper input {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #1e293b;
}

[data-theme="light"] .search-wrapper input::placeholder {
  color: #94a3b8;
}

[data-theme="light"] .search-wrapper input:focus {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.15);
  border-color: #3b82f6;
}

[data-theme="light"] .search-ico {
  fill: #64748b;
}

[data-theme="light"] .toc-item a {
  color: #475569;
}

[data-theme="light"] .toc-item a:hover {
  background: rgba(37, 99, 235, 0.08);
  color: #2563eb;
}

[data-theme="light"] .toc-item a.active {
  background: linear-gradient(90deg, #f97316, #a855f7);
  color: #ffffff;
}

[data-theme="light"] .content {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.05), rgba(168, 85, 247, 0.05));
}

[data-theme="light"] .content-inner {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .content-inner:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] #article h1,
[data-theme="light"] #article h2,
[data-theme="light"] #article h3 {
  color: #0f172a;
}

[data-theme="light"] #article p,
[data-theme="light"] #article li {
  color: #475569;
}

[data-theme="light"] #article a {
  color: #2563eb;
}

[data-theme="light"] #article a:hover {
  color: #1d4ed8;
}

[data-theme="light"] #article code {
  background: rgba(168, 85, 247, 0.08);
  color: #7c3aed;
}

[data-theme="light"] pre {
  background: #1e293b;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] #article table th,
[data-theme="light"] #article table td {
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(0, 0, 0, 0.02);
  color: #475569;
}

[data-theme="light"] #article table th {
  background: rgba(168, 85, 247, 0.08);
  color: #7c3aed;
}

[data-theme="light"] mark {
  background: rgba(249, 115, 22, 0.2);
  color: #1e293b;
}

[data-theme="light"] .heading-anchor {
  color: #94a3b8;
}

[data-theme="light"] .sidebar-footer .btn {
  background: rgba(0, 0, 0, 0.04);
  color: #3b82f6;
}

[data-theme="light"] .toc-toggle {
  color: #64748b;
}

[data-theme="light"] .site-footer {
  background: linear-gradient(135deg, rgba(248, 250, 252, 0.96), rgba(226, 232, 240, 0.92));
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
  color: #1e293b;
}

[data-theme="light"] .footer-col h4 {
  color: #f97316;
}

[data-theme="light"] .footer-desc,
[data-theme="light"] .footer-links a,
[data-theme="light"] .footer-socials a {
  color: #475569;
}

[data-theme="light"] .footer-links a:hover,
[data-theme="light"] .footer-socials a:hover {
  color: #f97316;
}

[data-theme="light"] .footer-bottom {
  color: #64748b;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

@media (max-width: 900px) {
  [data-theme="light"] .sidebar {
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(248, 250, 252, 0.95));
  }
}