:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --card: #1e293b;
  --accent: #38bdf8;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: #334155;
  --code-bg: #1e293b;
  --success: #10b981;
  color-scheme: dark;
}

:root[data-theme='dark2'] {
  --bg: #0f172a;
  --panel: #1e293b;
  --card: #1e293b;
  --accent: #38bdf8;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: #334155;
  --code-bg: #1e293b;
  --success: #10b981;
  color-scheme: dark;
}

:root[data-theme='dark'] {
  --bg: #0b1020;
  --panel: #0f172a;
  --card: #111827;
  --accent: #c084fc;
  --text: #e2e8f0;
  --muted: #a5b4fc;
  --border: #1f2937;
  --code-bg: #0b1220;
  --success: #22c55e;
  color-scheme: dark;
}

:root[data-theme='light'] {
  --bg: #f8fafc;
  --panel: #ffffff;
  --card: #f1f5f9;
  --accent: #2563eb;
  --text: #0f172a;
  --muted: #475569;
  --border: #d9e1ec;
  --code-bg: #f9f9f9;
  --success: #16a34a;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.08), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(34, 197, 94, 0.08), transparent 25%),
    var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  padding: 32px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(56, 189, 248, 0));
  border-bottom: 1px solid var(--border);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
  margin: 0 0 6px;
}

h1 {
  margin: 0;
  font-size: 28px;
}

.subtitle {
  color: var(--muted);
  margin: 8px 0 0;
}

.badge {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent);
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  font-weight: 700;
}

.theme-switcher {
  display: grid;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.theme-label {
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.theme-select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  font-weight: 600;
  min-width: 140px;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  padding: 24px 32px 48px;
}

.sidebar {
  position: sticky;
  top: 12px;
  align-self: start;
  height: calc(100vh - 24px);
  max-height: calc(100vh - 24px);
}

.sidebar-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.sidebar-group h3 {
  margin: 12px 0 8px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sidebar-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-group li {
  margin: 6px 0;
}

.search-hint {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}

.sidebar-scroll {
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 10px;
  margin-right: -6px;
  scroll-behavior: smooth;
  flex: 1;
  min-height: 0;
}

.sidebar-scroll::-webkit-scrollbar {
  width: 10px;
}

.sidebar-scroll::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 999px;
}

.sidebar-scroll::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.35);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}

.sidebar-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.55);
  background-clip: content-box;
}

.sidebar-group {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--card);
  margin-bottom: 10px;
}

.sidebar-group__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  border: none;
  background: transparent;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  cursor: pointer;
  padding: 6px 0;
}

.sidebar-group__items {
  list-style: none;
  padding: 0 0 6px;
  margin: 0;
}

.sidebar-group__items[hidden] {
  display: none;
}

.nav-link {
  display: block;
  padding: 6px 8px;
  border-radius: 10px;
  color: var(--text);
}

.nav-link:hover {
  background: rgba(56, 189, 248, 0.08);
}

.nav-link.active {
  background: rgba(56, 189, 248, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.35);
  font-weight: 700;
}

.chevron {
  width: 12px;
  height: 12px;
  display: inline-block;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.sidebar-group.is-open .chevron {
  transform: rotate(225deg);
}

.content {
  min-width: 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.card h2 {
  margin-top: 0;
}

.toc {
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 18px;
}

.toc-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.toc-list .level-2 { margin-left: 8px; }
.toc-list .level-3 { margin-left: 16px; }

.toc-label {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.breadcrumbs {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

.content-grid {
  padding: 32px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.pill-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill-list a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid rgba(56, 189, 248, 0.3);
  background: rgba(56, 189, 248, 0.08);
}

.hljs {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  overflow: auto;
}

code, pre {
  font-family: 'JetBrains Mono', 'Fira Code', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

table thead {
  background: rgba(56, 189, 248, 0.1);
  border-bottom: 2px solid var(--border);
}

table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.05em;
}

table td {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  color: var(--text);
}

table tbody tr:hover {
  background: rgba(56, 189, 248, 0.05);
}

table code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

footer.footer {
  margin-top: 24px;
  padding: 18px 32px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    max-height: 70vh;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px 18px;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .layout {
    padding: 18px 16px 32px;
  }

  .sidebar-section {
    padding: 14px;
  }

  .sidebar-scroll {
    max-height: 60vh;
  }

  .card {
    padding: 18px;
  }
}

/* ================================================
   Visual Studio Dark Theme Syntax Highlighting
   ================================================ */

code[class*="language-"],
pre[class*="language-"] {
  color: #dcdcdc;
  background: none;
  font-family: 'JetBrains Mono', 'Fira Code', 'SFMono-Regular', Consolas, monospace;
  text-align: left;
  white-space: pre;
  word-spacing: normal;
  word-break: normal;
  word-wrap: normal;
  line-height: 1.6;
  tab-size: 4;
}

/* Override Prism's default background */
pre[class*="language-"] {
  background: var(--code-bg) !important;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  overflow: auto;
  margin: 16px 0;
}

/* Keywords: if, else, return, public, private, class, namespace, using, etc. */
.token.keyword {
  color: #569cd6;
  font-weight: normal;
}

/* Class names, types, interfaces */
.token.class-name {
  color: #4ec9b0;
}

/* Strings */
.token.string {
  color: #ce9178;
}

/* Numbers */
.token.number {
  color: #b5cea8;
}

/* Comments */
.token.comment {
  color: #6a9955;
  font-style: italic;
}

/* Functions, method names */
.token.function {
  color: #dcdcaa;
}

/* Operators: =, +, -, etc. */
.token.operator {
  color: #d4d4d4;
}

/* Punctuation: {}, (), [], etc. */
.token.punctuation {
  color: #d4d4d4;
}

/* Properties */
.token.property {
  color: #9cdcfe;
}

/* Variables, parameters */
.token.parameter,
.token.variable {
  color: #9cdcfe;
}

/* Attributes like [HttpGet], [Route] */
.token.annotation,
.token.attr-name {
  color: #4ec9b0;
}

/* Boolean, null, true, false */
.token.boolean,
.token.constant,
.token.null {
  color: #569cd6;
}

/* Namespaces */
.token.namespace {
  color: #4ec9b0;
}

/* Generics <T> */
.token.generic {
  color: #4ec9b0;
}

/* Built-in types: int, string, decimal, etc. */
.token.builtin {
  color: #4ec9b0;
}

/* Preprocessor directives: #region, #if, etc. */
.token.preprocessor {
  color: #9b9b9b;
}

/* Regex patterns */
.token.regex {
  color: #d16969;
}

/* XML documentation comments */
.token.doctype,
.token.prolog {
  color: #6a9955;
}

/* Light theme adjustments */
:root[data-theme='light'] code[class*="language-"],
:root[data-theme='light'] pre[class*="language-"] {
  color: #1f1f1f;
}

:root[data-theme='light'] .token.keyword {
  color: #0000ff;
}

:root[data-theme='light'] .token.class-name,
:root[data-theme='light'] .token.namespace,
:root[data-theme='light'] .token.builtin {
  color: #267f99;
}

:root[data-theme='light'] .token.string {
  color: #a31515;
}

:root[data-theme='light'] .token.number {
  color: #098658;
}

:root[data-theme='light'] .token.comment {
  color: #008000;
}

:root[data-theme='light'] .token.function {
  color: #795e26;
}

:root[data-theme='light'] .token.property,
:root[data-theme='light'] .token.parameter,
:root[data-theme='light'] .token.variable {
  color: #001080;
}

:root[data-theme='light'] .token.operator,
:root[data-theme='light'] .token.punctuation {
  color: #000000;
}