/* Variables are provided by theme.css — no local :root overrides needed */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 10% -10%, var(--bg-spot-1), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, var(--bg-spot-2), transparent 55%),
    radial-gradient(700px 400px at 50% 120%, var(--bg-spot-3), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-2);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.site-header {
  padding: 28px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  background: linear-gradient(120deg, var(--accent-soft), var(--accent-2-faint));
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: inherit;
  text-decoration: none;
  max-width: 760px;
}

.brand:hover {
  color: inherit;
  text-decoration: none;
}

.brand:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
  border-radius: 16px;
}

.brand-mark {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  box-shadow: var(--shadow-soft);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.brand-mark::after {
  content: '';
  position: absolute;
  inset: 10px;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.brand:hover .brand-mark {
  transform: translateY(-2px) rotate(-1deg);
  box-shadow: var(--shadow);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.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;
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: 30px;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}

.subtitle {
  color: var(--muted);
  margin: 8px 0 0;
  font-size: 15px;
  display: block;
}

.badge {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--accent-strong);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 11px;
}

.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(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 600;
  min-width: 140px;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 28px;
  padding: 28px 40px 56px;
}

.sidebar {
  position: sticky;
  top: 20px;
  align-self: start;
  height: calc(100vh - 40px);
  max-height: calc(100vh - 40px);
}

.sidebar-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
  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: 14px;
  padding: 12px 14px;
  background: var(--card);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  margin-bottom: 12px;
}

.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 10px;
  border-radius: 12px;
  color: var(--text);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-link:hover {
  background: var(--accent-soft);
}

.nav-link.active {
  background: var(--accent-medium);
  border: 1px solid var(--accent-strong);
  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: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.card h2 {
  margin-top: 0;
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}

.toc {
  background: var(--accent-faint);
  border: 1px solid var(--accent-strong);
  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));
}

.landing {
  display: grid;
  gap: 24px;
  padding: 32px 40px 56px;
}

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

.hero-card {
  background: linear-gradient(130deg, var(--accent-glow), var(--accent-2-soft));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  box-shadow: var(--shadow);
}

.hero-copy h2 {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: 30px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1220;
  border: none;
}

.cta.ghost {
  background: transparent;
  color: var(--text);
}

.cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.hero-track {
  display: grid;
  gap: 12px;
}

.track-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.4);
}

:root[data-theme='light'] .track-item {
  background: rgba(255, 255, 255, 0.7);
}

.track-step {
  font-size: 11px;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-strong);
  padding: 6px 8px;
  border-radius: 10px;
}

.track-title {
  font-weight: 700;
}

.track-meta {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.start-card {
  display: grid;
  gap: 14px;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.checklist li {
  padding-left: 26px;
  position: relative;
}

.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 2px solid var(--accent-2);
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.2);
}

.card-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.list-card .pill-list {
  margin-top: 12px;
}

.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 var(--accent-strong);
  background: var(--accent-soft);
}

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

code, pre {
  font-family: var(--font-mono);
}

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: var(--accent-soft);
  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: var(--accent-faint);
}

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);
  border-top: 1px solid var(--border);
  font-size: 13px;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-header,
.hero-card,
.sidebar-section,
.content .card {
  animation: fade-up 0.6s ease both;
}

.landing-grid > .card {
  animation: fade-up 0.6s ease both;
}

.landing-grid > .card:nth-child(1) { animation-delay: 0.05s; }
.landing-grid > .card:nth-child(2) { animation-delay: 0.1s; }
.landing-grid > .card:nth-child(3) { animation-delay: 0.15s; }
.landing-grid > .card:nth-child(4) { animation-delay: 0.2s; }
.landing-grid > .card:nth-child(5) { animation-delay: 0.25s; }
.landing-grid > .card:nth-child(6) { animation-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

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

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

  .hero-card {
    grid-template-columns: 1fr;
  }

  .landing {
    padding: 24px 24px 40px;
  }
}

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

  .brand {
    align-items: flex-start;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
  }

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

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

  .landing {
    padding: 20px 18px 32px;
  }

  .sidebar-section {
    padding: 14px;
  }

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

  .card {
    padding: 18px;
  }

  .hero-card {
    padding: 20px;
  }
}

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

code[class*="language-"],
pre[class*="language-"] {
  color: #dcdcdc;
  background: none;
  font-family: var(--font-mono);
  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;
}

.global-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.global-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
}

.global-nav__home {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
}

.global-nav__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
}

.global-nav__icon svg {
  width: 18px;
  height: 18px;
}

.global-nav__icon:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.global-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: center;
}

.global-nav__label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
  color: var(--muted);
}

.global-nav__links a {
  color: var(--text);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.85rem;
  text-decoration: none;
}

.global-nav__links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}