:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e6edf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --code-bg: #111827;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --surface: #ffffff;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #656d76;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --code-bg: #f6f8fa;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.logout-form {
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.85rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
}

.flash-stack {
  padding-top: 1rem;
}

.flash {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
}

.flash-error {
  background: color-mix(in srgb, #ef4444 12%, var(--surface));
  border-color: color-mix(in srgb, #ef4444 35%, var(--border));
}

.flash-success {
  background: color-mix(in srgb, #22c55e 12%, var(--surface));
  border-color: color-mix(in srgb, #22c55e 35%, var(--border));
}


.form-stack {
  display: grid;
  gap: 1rem;
}

.form-stack label {
  display: grid;
  gap: 0.35rem;
}

.form-stack label span {
  font-size: 0.875rem;
  color: var(--muted);
}

.form-stack input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.form-stack input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-color: var(--accent);
}

.profile-page {
  padding-bottom: 2rem;
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1.125rem;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.meta {
  color: var(--muted);
  font-size: 0.875rem;
}

.hero {
  padding: 2rem 0 1rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
}

.doc-list {
  display: grid;
  gap: 0.75rem;
  padding-bottom: 2rem;
}

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s;
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.doc-name {
  font-weight: 600;
}

.doc-path {
  color: var(--muted);
  font-size: 0.875rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  padding: 1.5rem 1.25rem 3rem;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: 2;
  }
}

.sidebar {
  position: sticky;
  top: 4rem;
  align-self: start;
  max-height: calc(100vh - 5rem);
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem;
}

.sidebar-title {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.doc-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.doc-tree-root {
  font-size: 0.8125rem;
}

.tree-folder-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.45rem;
  padding-left: calc(0.45rem + var(--depth) * 0.85rem);
  border-radius: 0.375rem;
  color: var(--muted);
  font-weight: 600;
}

.tree-folder-icon {
  font-size: 0.7rem;
  line-height: 1;
  opacity: 0.75;
}

.tree-file a {
  display: block;
  padding: 0.32rem 0.45rem;
  padding-left: calc(0.65rem + var(--depth) * 0.85rem);
  border-radius: 0.375rem;
  color: var(--muted);
  text-decoration: none;
  word-break: break-word;
}

.tree-file a:hover,
.tree-file a.active {
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.tree-file a.active {
  font-weight: 600;
}

.index-content .hero {
  padding-top: 0;
}

.index-content .doc-list {
  padding-bottom: 0;
}

.nav-back {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--accent);
  text-decoration: none;
}

.nav-back::before {
  content: "← ";
}

[dir="rtl"] .nav-back::before {
  content: "→ ";
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li + li {
  margin-top: 0.35rem;
}

.nav-list a {
  display: block;
  padding: 0.35rem 0.5rem;
  border-radius: 0.375rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8125rem;
  word-break: break-all;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.content {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 2rem;
}

.page-title {
  margin-top: 0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  line-height: 1.25;
}

.markdown-body h1:first-child {
  margin-top: 0;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body pre,
.markdown-body table,
.markdown-body blockquote {
  margin: 0 0 1rem;
}

.markdown-body a {
  color: var(--accent);
}

.markdown-body a:hover {
  color: var(--accent-hover);
}

.markdown-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.875em;
  background: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 0.25rem;
}

.markdown-body pre {
  overflow: auto;
  padding: 1rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

.markdown-body pre code {
  background: none;
  padding: 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.markdown-body blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
}

.markdown-body img {
  max-width: 100%;
  height: auto;
}

.markdown-body .highlight {
  margin: 0;
}

.markdown-body .toc {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.markdown-body .toc ul {
  margin: 0;
  padding-left: 1.25rem;
}

.markdown-body .headerlink {
  color: var(--muted);
  text-decoration: none;
  margin-left: 0.35rem;
  font-size: 0.85em;
}

.markdown-body .headerlink:hover {
  color: var(--accent);
}

[dir="rtl"] .markdown-body,
[dir="rtl"] .page-title,
[dir="rtl"] .hero {
  text-align: right;
}

[dir="rtl"] .markdown-body th,
[dir="rtl"] .markdown-body td {
  text-align: right;
}

[dir="rtl"] .markdown-body blockquote {
  border-left: none;
  border-right: 4px solid var(--accent);
  padding-left: 0;
  padding-right: 1rem;
}

[dir="rtl"] .markdown-body .toc ul {
  padding-left: 0;
  padding-right: 1.25rem;
}

[dir="rtl"] .markdown-body .headerlink {
  margin-left: 0;
  margin-right: 0.35rem;
}
[dir="rtl"] .panel,
[dir="rtl"] .profile-page .hero {
  text-align: right;
}