:root {
  --primary: #0071e3;
  --primary-hover: #0077ed;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-muted: #86868b;
  --border: #d2d2d7;
  --border-light: #e8e8ed;
  --bg: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-code: #f5f5f7;
  --header-h: 52px;
  --sidebar-w: 260px;
  --content-max-w: 780px;
  --radius: 10px;
  --radius-sm: 6px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
.docs-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  z-index: 100;
}

.docs-header .logo {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  margin-right: 2rem;
  letter-spacing: -0.01em;
}

.docs-header .logo span {
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 0.25rem;
  font-size: 0.8rem;
}

.docs-header nav {
  display: flex;
  gap: 1.25rem;
}

.docs-header nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  padding: 0.25rem 0;
  transition: color 0.15s;
}

.docs-header nav a:hover {
  color: var(--text);
}

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-right a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.header-right a:hover {
  color: var(--text);
}

/* Layout */
.docs-container {
  display: flex;
  padding-top: var(--header-h);
  min-height: 100vh;
}

/* Sidebar */
.docs-sidebar {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: var(--sidebar-w);
  height: calc(100vh - var(--header-h));
  background: var(--bg);
  border-right: 1px solid var(--border-light);
  padding: 1.25rem 0.75rem;
  overflow-y: auto;
  scrollbar-width: thin;
}

.docs-sidebar::-webkit-scrollbar {
  width: 4px;
}

.docs-sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.sidebar-section {
  margin-bottom: 1.5rem;
}

.sidebar-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  letter-spacing: 0.04em;
  padding-left: 0.75rem;
}

.sidebar-links {
  list-style: none;
}

.sidebar-links li {
  margin-bottom: 1px;
}

.sidebar-links a {
  display: block;
  padding: 0.3rem 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  transition: all 0.15s;
  line-height: 1.4;
}

.sidebar-links a:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

.sidebar-links a.active {
  background: var(--primary);
  color: white;
  font-weight: 500;
}

/* Main content */
.docs-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 2.5rem 3rem;
  max-width: calc(var(--content-max-w) + var(--sidebar-w) + 6rem);
}

.docs-main h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.docs-main h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 2.5rem 0 0.75rem 0;
  letter-spacing: -0.015em;
  color: var(--text);
}

.docs-main h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem 0;
  color: var(--text);
}

.docs-main h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem 0;
  color: var(--text);
}

.docs-main p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.docs-main ul,
.docs-main ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.docs-main li {
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Code */
code {
  background: var(--bg-code);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Consolas, monospace;
  color: var(--text);
}

pre {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1px solid var(--border-light);
  margin: 1rem 0 1.5rem 0;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.82rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem 0;
  font-size: 0.9rem;
}

th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}

td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
}

/* Blockquote */
blockquote {
  border-left: 3px solid var(--primary);
  padding: 0.5rem 1rem;
  margin: 1rem 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

blockquote p {
  margin-bottom: 0;
}

/* Info boxes */
.info-box {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin: 1rem 0;
  border-left: 3px solid;
  font-size: 0.9rem;
}

.info-box.note {
  background: #eef6ff;
  border-color: var(--primary);
}

.info-box.warning {
  background: #fff8e6;
  border-color: #bf5600;
}

.info-box.tip {
  background: #eefbf1;
  border-color: #1a7f37;
}

/* Section list */
ul.section-list {
  list-style: none;
  padding: 0;
}

ul.section-list li {
  margin-bottom: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: border-color 0.15s;
}

ul.section-list li:hover {
  border-color: var(--border);
}

ul.section-list li a {
  font-weight: 500;
  color: var(--primary);
}

/* Navigation pagination */
nav.pagination {
  margin: 1.5rem 0;
}

nav.pagination .pagination-list {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

nav.pagination a {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  text-decoration: none;
}

nav.pagination a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.pagination-current span {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, transparent);
  color: var(--primary);
}

.pagination-disabled span {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  opacity: 0.5;
}

/* Footer */
.docs-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Search trigger button */
.search-trigger {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}

.search-trigger:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.search-trigger kbd {
  font-size: 0.65rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-family: inherit;
  line-height: 1.4;
}

/* Search overlay */
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  justify-content: center;
  padding-top: 12vh;
}

.search-overlay.active {
  display: flex;
}

.search-modal {
  width: 560px;
  max-width: 90vw;
  max-height: 70vh;
  background: var(--bg);
  border-radius: var(--radius);
  box-shadow: 0 16px 70px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  align-self: flex-start;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-light);
}

.search-input-wrap svg {
  flex-shrink: 0;
  color: var(--text-muted);
}

.search-input-wrap input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: transparent;
}

.search-input-wrap input::placeholder {
  color: var(--text-muted);
}

.search-input-wrap kbd {
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-family: inherit;
  cursor: pointer;
  line-height: 1.4;
}

.search-results {
  overflow-y: auto;
  padding: 0.5rem;
}

.search-result-item {
  display: block;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  cursor: pointer;
  transition: background 0.1s;
}

.search-result-item:hover,
.search-result-item.active {
  background: var(--bg-secondary);
  text-decoration: none;
}

.search-result-item .search-result-title {
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.search-result-item .search-result-snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-result-item .search-result-snippet mark {
  background: rgba(0, 113, 227, 0.15);
  color: var(--primary);
  border-radius: 2px;
  padding: 0 1px;
}

.search-no-results {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-hint {
  padding: 0.5rem 0.75rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  border-top: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 0.7rem;
}

.search-hint kbd {
  font-size: 0.65rem;
  padding: 0 0.3rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-secondary);
  font-family: inherit;
  line-height: 1.4;
}

/* Responsive */
@media (max-width: 768px) {
  .docs-sidebar {
    display: none;
  }
  .docs-main {
    margin-left: 0;
    padding: 1.5rem 1rem;
  }
}