:root {
  --bg: #ffffff;
  --bg-sidebar: #f8f9fa;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --header-height: 56px;
  --sidebar-width: 260px;
  --content-max: 800px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

[data-theme='dark'] {
  --bg: #0f172a;
  --bg-sidebar: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --accent: #60a5fa;
  --accent-hover: #93bbfd;
  color-scheme: dark;
  background: var(--bg);
  color: var(--text);
}

[data-theme='light'] {
  background: var(--bg);
  color: var(--text);
}

[data-theme] {
  min-height: 100vh;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: var(--header-height);
  padding: 0 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.header-nav {
  display: flex;
  gap: 1.5rem;
  margin-left: auto;
}
.header-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.header-nav a:hover {
  color: var(--text);
}

.sidebar-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  color: var(--text);
  font-size: 1rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-sans);
}
.theme-toggle:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* Layout */
.layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  padding: 1.5rem 1rem;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  transition: margin-left 0.2s;
}

.sidebar--closed {
  margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar-heading {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  margin-top: 1.5rem;
}

.sidebar-section:first-child .sidebar-heading {
  margin-top: 0;
}

.sidebar-links {
  list-style: none;
  padding: 0;
}
.sidebar-links li {
  margin-bottom: 0.25rem;
}

.sidebar-links a {
  display: block;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  color: var(--text);
  font-size: 0.875rem;
}

.sidebar-links a:hover {
  background: var(--border);
}

/* Content */
.content {
  flex: 1;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

.content h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}
.content h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.content h3 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
.content p {
  margin-bottom: 1rem;
}
.content ul,
.content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.content li {
  margin-bottom: 0.25rem;
}

.content pre {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
}

.content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-sidebar);
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
}

.content pre code {
  background: none;
  padding: 0;
}

/* Callouts */
.callout {
  border-left: 4px solid var(--accent);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  border-radius: 0 6px 6px 0;
  background: var(--bg-sidebar);
}

.callout--warning {
  border-left-color: #f59e0b;
}
.callout--info {
  border-left-color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  .sidebar {
    position: fixed;
    z-index: 50;
    top: var(--header-height);
    left: 0;
    height: calc(100vh - var(--header-height));
  }
  .sidebar--closed {
    margin-left: calc(-1 * var(--sidebar-width));
  }
  .content {
    padding: 1.5rem 1rem 3rem;
  }
}

/* Landing Page */
.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}
.hero h1 {
  font-size: 2.5rem;
}
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.package-card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  transition: border-color 0.15s;
}

.package-card:hover {
  border-color: var(--accent);
}

.package-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.package-card h3 {
  font-size: 1rem;
}

.package-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--accent);
  color: white;
}

.package-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

.quick-links {
  margin-top: 3rem;
}
.quick-links h2 {
  margin-bottom: 1rem;
}

/* Architecture */
/* Search */
.search-wrapper {
  position: relative;
  margin-left: 1rem;
}
.search-input {
  width: 220px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.875rem;
  font-family: var(--font-sans);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
}
.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  max-height: 300px;
  overflow-y: auto;
  z-index: 200;
}
.search-result {
  display: flex;
  flex-direction: column;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.search-result:last-child {
  border-bottom: none;
}
.search-result:hover {
  background: var(--bg-sidebar);
}
.search-result-section {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}
.search-result-title {
  font-size: 0.875rem;
}

.architecture-diagram {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--bg-sidebar);
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* Prism Syntax Highlighting */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: var(--text-muted);
  font-style: italic;
}
.token.punctuation {
  color: var(--text);
}
.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
  color: #e06c75;
}
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #98c379;
}
.token.operator,
.token.entity,
.token.url {
  color: #56b6c2;
}
.token.atrule,
.token.attr-value,
.token.keyword {
  color: #c678dd;
}
.token.function,
.token.class-name {
  color: #61afef;
}
.token.regex,
.token.important,
.token.variable {
  color: #d19a66;
}