/* ============================================================
   synstacks docs — design tokens + base styles
   ============================================================ */

:root {
  /* dark, default */
  --bg:            #0a0a0b;
  --bg-elev:       #0e0e10;
  --surface:       #141418;
  --surface-2:     #1a1a1f;
  --surface-hover: #1f1f25;
  --border:        #1f1f24;
  --border-strong: #2a2a30;
  --fg:            #ededee;
  --fg-muted:      #9b9ba1;
  --fg-subtle:     #6e6e75;
  --fg-faint:      #4a4a51;

  --accent:        #6366f1;
  --accent-hover:  #818cf8;
  --accent-bg:     rgba(99, 102, 241, 0.13);
  --accent-border: rgba(99, 102, 241, 0.32);
  --accent-glow:   rgba(99, 102, 241, 0.25);

  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --info:          #38bdf8;

  --code-bg:       #08080a;
  --code-bg-inline:#16161b;
  --code-border:   #1f1f24;

  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --topbar-h: 56px;
  --sidebar-w: 256px;
  --toc-w: 224px;
  --content-max: 760px;

  --radius-sm: 5px;
  --radius:    8px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --shadow-sm:  0 1px 2px rgba(0,0,0,0.3);
  --shadow:     0 4px 16px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.04);
  --shadow-lg:  0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05);
}

[data-theme="light"] {
  --bg:            #ffffff;
  --bg-elev:       #fafafa;
  --surface:       #f5f5f7;
  --surface-2:     #ececef;
  --surface-hover: #ececef;
  --border:        #e8e8eb;
  --border-strong: #d4d4d9;
  --fg:            #09090b;
  --fg-muted:      #525258;
  --fg-subtle:     #75757b;
  --fg-faint:      #a0a0a5;

  --accent:        #4f46e5;
  --accent-hover:  #4338ca;
  --accent-bg:     rgba(99, 102, 241, 0.09);
  --accent-border: rgba(99, 102, 241, 0.28);
  --accent-glow:   rgba(99, 102, 241, 0.15);

  --code-bg:       #f7f7f9;
  --code-bg-inline:#f0f0f3;
  --code-border:   #e8e8eb;

  --shadow:     0 4px 16px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
  --shadow-lg:  0 24px 64px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.05);
}

/* ============================================================
   Reset
   ============================================================ */

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

html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; }

::selection { background: var(--accent-bg); color: var(--fg); }

/* ============================================================
   Topbar
   ============================================================ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-h);
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 20px;
  gap: 24px;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.topbar-right { justify-content: flex-end; }

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.brand-mark {
  width: 22px; height: 22px;
  display: grid; place-items: center;
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-text { font-weight: 600; }

.brand-divider {
  width: 1px; height: 18px;
  background: var(--border-strong);
  margin: 0 2px;
}

.brand-label {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 500;
}

.version-switcher {
  margin-left: 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
  position: relative;
}
.version-switcher:hover {
  background: var(--surface);
  color: var(--fg);
  border-color: var(--border-strong);
}
.version-caret { font-size: 8px; opacity: 0.7; }

.version-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 160px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 4px;
  z-index: 60;
}
.version-menu-item {
  padding: 6px 10px;
  font-size: 13px;
  color: var(--fg);
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.version-menu-item:hover { background: var(--surface); }
.version-menu-item .check { color: var(--accent); opacity: 0; }
.version-menu-item.active .check { opacity: 1; }
.version-menu-tag {
  font-size: 10px;
  color: var(--fg-subtle);
  font-weight: 500;
}

.search-trigger {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px 0 10px;
  height: 32px;
  border-radius: var(--radius);
  min-width: 320px;
  font-size: 13px;
  transition: all 0.15s;
}
.search-trigger:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--fg);
}
.search-trigger span { flex: 1; text-align: left; }
.search-trigger kbd,
kbd {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-subtle);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

.topbar-link {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 500;
  padding: 4px 6px;
  transition: color 0.15s;
}
.topbar-link:hover { color: var(--fg); }

.icon-btn {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  color: var(--fg-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
}
.icon-btn:hover { background: var(--surface); color: var(--fg); }
.icon-btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--fg);
  color: var(--bg);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.85; }

/* ============================================================
   Layout
   ============================================================ */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  max-width: 1440px;
  margin: 0 auto;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 24px 16px 48px 24px;
  border-right: 1px solid var(--border);
}

.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }

.nav-section + .nav-section { margin-top: 22px; }

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding: 0 8px;
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  font-size: 13.5px;
  color: var(--fg-muted);
  border-radius: var(--radius-sm);
  transition: all 0.12s;
  position: relative;
}
.nav-item:hover {
  color: var(--fg);
  background: var(--surface);
}
.nav-item.active {
  color: var(--fg);
  background: var(--surface);
  font-weight: 500;
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 16px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-item .nav-pill {
  margin-left: auto;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 1px 5px;
  border-radius: 3px;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  text-transform: uppercase;
}
.nav-item .nav-pill[data-tone="beta"] { color: var(--warning); background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.3); }

/* ============================================================
   Content
   ============================================================ */

.content {
  padding: 48px 56px 96px;
  min-width: 0;
}

.content.wide { padding-left: 40px; padding-right: 40px; }

article {
  max-width: var(--content-max);
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--fg-subtle);
  margin-bottom: 12px;
}
.crumbs a { color: var(--fg-muted); transition: color 0.15s; }
.crumbs a:hover { color: var(--fg); }
.crumbs .sep { opacity: 0.5; }

.page-title {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 12px;
  color: var(--fg);
}

.page-lede {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.55;
  margin: 0 0 32px;
  max-width: 640px;
}

h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 56px 0 14px;
  scroll-margin-top: 80px;
  color: var(--fg);
}
h2:first-child { margin-top: 0; }

h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 32px 0 8px;
  scroll-margin-top: 80px;
  color: var(--fg);
}

p { margin: 0 0 16px; color: var(--fg); }
p, li { text-wrap: pretty; }

article p, article li { color: color-mix(in oklab, var(--fg) 92%, var(--fg-muted)); }

article a:not(.btn-primary):not(.card):not(.nav-item):not(.crumb) {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  transition: border-color 0.15s;
}
article a:not(.btn-primary):not(.card):not(.nav-item):not(.crumb):hover {
  border-bottom-color: var(--accent);
}

ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 6px; }
li > p { margin-bottom: 6px; }

strong { font-weight: 600; color: var(--fg); }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg-inline);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--fg);
  border: 1px solid var(--border);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* Callouts */
.callout {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 20px 0;
}
.callout[data-tone="info"] {
  background: color-mix(in oklab, var(--info) 8%, var(--bg));
  border-color: color-mix(in oklab, var(--info) 25%, transparent);
}
.callout[data-tone="warn"] {
  background: color-mix(in oklab, var(--warning) 8%, var(--bg));
  border-color: color-mix(in oklab, var(--warning) 25%, transparent);
}
.callout-icon {
  flex-shrink: 0;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  margin-top: 1px;
  color: var(--info);
}
.callout[data-tone="warn"] .callout-icon { color: var(--warning); }
.callout-body { font-size: 14px; color: var(--fg-muted); }
.callout-body p { margin: 0; color: inherit; }
.callout-body strong { color: var(--fg); }

/* ============================================================
   Code blocks (with tabs + copy)
   ============================================================ */

.code-block {
  margin: 20px 0 24px;
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  background: var(--code-bg);
  overflow: hidden;
}

.code-tabs {
  display: flex;
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--code-border);
  padding: 0 4px;
  min-height: 36px;
  gap: 1px;
}
.code-tab {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--fg-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 10px;
  border-radius: 5px;
  font-family: var(--font-mono);
  transition: all 0.12s;
}
.code-tab:hover { color: var(--fg); }
.code-tab.active {
  color: var(--fg);
  background: var(--bg);
}

.code-block-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-muted);
  padding: 0 10px;
  flex: 1;
}

.code-copy {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--fg-muted);
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 5px;
  margin-right: 4px;
  transition: all 0.12s;
}
.code-copy:hover { background: var(--surface-hover); color: var(--fg); }
.code-copy svg { width: 14px; height: 14px; }
.code-copy.copied { color: var(--success); }

.code-panes {
  position: relative;
}
.code-pane {
  display: none;
  overflow-x: auto;
  padding: 16px 18px;
}
.code-pane.active { display: block; }
.code-pane pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--fg);
}
.code-pane code { background: none; padding: 0; border: none; font-size: inherit; }

/* Syntax */
.tk-c { color: var(--fg-subtle); font-style: italic; }
.tk-k { color: #ff79c6; }
.tk-s { color: #f1fa8c; }
.tk-n { color: #bd93f9; }
.tk-f { color: #50fa7b; }
.tk-v { color: #8be9fd; }
.tk-p { color: var(--fg-muted); }
.tk-t { color: #ffb86c; }
.tk-b { color: #f8f8f2; }

[data-theme="light"] {
  --code-bg: #fafafa;
}
[data-theme="light"] .tk-c { color: #6b7280; }
[data-theme="light"] .tk-k { color: #be185d; }
[data-theme="light"] .tk-s { color: #047857; }
[data-theme="light"] .tk-n { color: #7c3aed; }
[data-theme="light"] .tk-f { color: #0284c7; }
[data-theme="light"] .tk-v { color: #0369a1; }
[data-theme="light"] .tk-p { color: var(--fg-muted); }
[data-theme="light"] .tk-t { color: #ea580c; }

/* Inline shell code */
.shell-line { color: var(--fg); }
.shell-line .prompt { color: var(--accent); margin-right: 8px; user-select: none; }
.shell-line .cmt { color: var(--fg-subtle); }

/* ============================================================
   API try-it console
   ============================================================ */

.try-it {
  margin: 24px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
}
.try-it-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.try-it-method {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.try-it-method.post { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.try-it-method.get { background: rgba(56, 189, 248, 0.15); color: var(--info); }
.try-it-method.patch { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.try-it-method.delete { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.try-it-path {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg);
  flex: 1;
}
.try-it-path .seg-param { color: var(--accent); }
.try-it-run {
  background: var(--accent);
  color: white;
  border: none;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 5px;
  transition: background 0.15s;
}
.try-it-run:hover { background: var(--accent-hover); }
.try-it-run:disabled { opacity: 0.6; cursor: not-allowed; }

.try-it-body {
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.try-it-body label {
  display: block;
  color: var(--fg-subtle);
  font-size: 11px;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
  font-family: var(--font-sans);
}
.try-it-body textarea {
  width: 100%;
  min-height: 80px;
  background: var(--code-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  resize: vertical;
  outline: none;
}
.try-it-body textarea:focus { border-color: var(--accent-border); }

.try-it-response {
  border-top: 1px solid var(--border);
  background: var(--code-bg);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--fg);
  white-space: pre;
  overflow-x: auto;
  max-height: 280px;
}
.try-it-response-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--fg-subtle);
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.try-it-response-meta .status {
  color: var(--success);
  font-weight: 600;
  font-family: var(--font-mono);
}
.try-it-response-meta .status.err { color: var(--danger); }

/* ============================================================
   TOC (right rail)
   ============================================================ */

.toc {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 48px 24px 48px 0;
  font-size: 13px;
}

.toc::-webkit-scrollbar { width: 4px; }
.toc::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.toc-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 10px;
  padding-left: 12px;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--border);
}

.toc-list li a {
  display: block;
  padding: 4px 12px;
  color: var(--fg-muted);
  font-size: 13px;
  transition: color 0.12s;
  border-left: 1px solid transparent;
  margin-left: -1px;
}
.toc-list li a:hover { color: var(--fg); }
.toc-list li a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}
.toc-list li.toc-h3 a { padding-left: 22px; font-size: 12.5px; }

.toc-footer {
  margin-top: 20px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}
.toc-footer a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--fg-muted);
  padding: 4px 0;
}
.toc-footer a:hover { color: var(--fg); }
.toc-footer svg { width: 12px; height: 12px; }

/* ============================================================
   Cmd+K palette
   ============================================================ */

.cmdk-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: grid;
  place-items: start center;
  padding-top: 18vh;
  animation: cmdk-overlay-in 0.18s ease;
}
.cmdk-overlay[hidden] { display: none; }

/* Inline-string SVG safety net: every icon built in JS without explicit
   width/height attributes inherits its container size. Lock the common
   chrome locations to sensible defaults. */
.topbar svg,
.search-trigger svg,
.cmdk-input-wrap svg,
.cmdk-item .cmdk-icon svg,
.icon-btn svg,
.brand-mark svg,
.toc-footer svg,
.callout-icon svg,
.code-copy svg,
.card-icon svg,
.page-nav-title svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; }
.search-trigger svg { width: 14px; height: 14px; }
.cmdk-input-wrap > svg { width: 16px; height: 16px; }
.cmdk-item .cmdk-icon svg { width: 13px; height: 13px; }
.code-copy svg { width: 14px; height: 14px; }
.callout-icon svg { width: 16px; height: 16px; }
.toc-footer svg { width: 12px; height: 12px; }
.page-nav-title svg { width: 13px; height: 13px; }
[data-theme="light"] .cmdk-overlay { background: rgba(0,0,0,0.3); }

@keyframes cmdk-overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.cmdk {
  width: 100%;
  max-width: 580px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: cmdk-in 0.18s ease;
}

@keyframes cmdk-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.cmdk-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.cmdk-input-wrap svg {
  width: 16px; height: 16px;
  color: var(--fg-subtle);
  flex-shrink: 0;
}
.cmdk-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--fg);
  font-size: 15px;
  font-family: var(--font-sans);
}
.cmdk-input::placeholder { color: var(--fg-subtle); }
.cmdk-esc {
  font-size: 11px;
  color: var(--fg-subtle);
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.cmdk-results {
  max-height: 380px;
  overflow-y: auto;
  padding: 6px;
}
.cmdk-results::-webkit-scrollbar { width: 6px; }
.cmdk-results::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

.cmdk-group {
  margin-bottom: 4px;
}
.cmdk-group-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding: 8px 10px 4px;
}
.cmdk-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13.5px;
  color: var(--fg);
}
.cmdk-item .cmdk-icon {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: var(--surface);
  border-radius: 5px;
  color: var(--fg-muted);
  flex-shrink: 0;
}
.cmdk-item .cmdk-icon svg { width: 13px; height: 13px; }
.cmdk-item .cmdk-meta {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--fg-subtle);
}
.cmdk-item.focused {
  background: var(--accent-bg);
  color: var(--fg);
}
.cmdk-item.focused .cmdk-icon { background: var(--accent-bg); color: var(--accent); }
.cmdk-item .cmdk-sub {
  display: block;
  font-size: 11.5px;
  color: var(--fg-subtle);
  margin-top: 1px;
}
.cmdk-item .cmdk-main { display: flex; flex-direction: column; min-width: 0; flex: 1; }

.cmdk-empty {
  padding: 32px 16px;
  text-align: center;
  font-size: 13.5px;
  color: var(--fg-subtle);
}

.cmdk-footer {
  border-top: 1px solid var(--border);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11.5px;
  color: var(--fg-subtle);
  background: color-mix(in oklab, var(--bg-elev) 80%, var(--surface));
}
.cmdk-footer-key {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.cmdk-footer-key kbd {
  background: var(--surface);
  border-color: var(--border);
  font-family: var(--font-mono);
}

/* ============================================================
   Cards & content widgets
   ============================================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 32px;
}
.card-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  display: block;
  padding: 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.18s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-strong);
  background: var(--surface);
  transform: translateY(-1px);
}
.card-icon {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  color: var(--accent);
}
.card:hover .card-icon { background: var(--accent-bg); border-color: var(--accent-border); }
.card-icon svg { width: 16px; height: 16px; }
.card-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-title .arrow {
  opacity: 0;
  transform: translateX(-3px);
  transition: all 0.2s;
  color: var(--fg-subtle);
}
.card:hover .card-title .arrow { opacity: 1; transform: none; color: var(--accent); }
.card-desc {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
  margin: 0;
}

/* Stat / feature row */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
  align-items: start;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-text h3 { margin-top: 0; font-size: 18px; }
.feature-text p { font-size: 14px; color: var(--fg-muted); }
.feature-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  min-height: 200px;
}

/* Pill row */
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 20px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--fg-muted);
  background: var(--bg-elev);
}
.pill[data-tone="accent"] {
  color: var(--accent);
  background: var(--accent-bg);
  border-color: var(--accent-border);
}

/* Table */
.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 13.5px;
}
.docs-table th, .docs-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.docs-table th {
  font-size: 12px;
  font-weight: 600;
  color: var(--fg-subtle);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--surface);
}
.docs-table tr:last-child td { border-bottom: none; }
.docs-table td code { font-size: 12.5px; }
.docs-table .col-required {
  font-size: 10.5px;
  color: var(--danger);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.docs-table .col-type {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

/* Footer nav (prev / next) */
.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.page-nav-link {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.15s;
}
.page-nav-link:hover {
  border-color: var(--border-strong);
  background: var(--surface);
}
.page-nav-link[data-dir="next"] { text-align: right; grid-column: 2; }
.page-nav-label {
  font-size: 11px;
  color: var(--fg-subtle);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}
.page-nav-title {
  font-size: 14.5px;
  color: var(--fg);
  font-weight: 500;
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-nav-link[data-dir="next"] .page-nav-title { justify-content: flex-end; }

/* ============================================================
   Landing-specific
   ============================================================ */

.hero {
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 18px;
}
.hero-eyebrow .tag {
  background: var(--accent-bg);
  color: var(--accent);
  font-weight: 600;
  font-size: 10.5px;
  padding: 2px 7px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 44px;
  letter-spacing: -0.03em;
  font-weight: 600;
  line-height: 1.05;
  margin: 0 0 14px;
  max-width: 640px;
}
.hero h1 .accent { color: var(--accent); }
.hero-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.5;
  margin: 0 0 24px;
}
.hero-ctas {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}
.btn-ghost:hover { border-color: var(--border-strong); background: var(--surface); }
.btn-ghost kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-subtle);
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--fg);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--fg);
  transition: opacity 0.15s;
}
.btn-cta:hover { opacity: 0.86; }

.section-heading {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin: 48px 0 12px;
}

/* App preview surface — mimics the actual Synstacks UI in screenshots */
.app-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0a0a0b;
  margin: 24px 0;
  display: grid;
  grid-template-columns: 44px 200px 1fr;
  height: 320px;
  font-size: 12.5px;
}
.app-preview .ap-rail {
  background: #07070a;
  border-right: 1px solid #15151a;
  padding: 10px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.app-preview .ap-rail .ap-rail-icon {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--surface);
  display: grid; place-items: center;
  color: var(--fg-muted);
  position: relative;
}
.app-preview .ap-rail .ap-rail-icon.active {
  background: var(--accent);
  color: white;
}
.app-preview .ap-rail .ap-rail-icon.active::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 4px; bottom: 4px;
  width: 3px;
  background: white;
  border-radius: 0 3px 3px 0;
}
.app-preview .ap-rail .ap-rail-icon svg { width: 14px; height: 14px; }

.app-preview .ap-sidebar {
  background: #0c0c0f;
  border-right: 1px solid #15151a;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}
.app-preview .ap-sidebar-team {
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 600;
  font-size: 12px;
  padding: 4px 6px;
  margin-bottom: 8px;
  color: var(--fg);
}
.app-preview .ap-section {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding: 8px 6px 2px;
  font-weight: 500;
}
.app-preview .ap-row {
  display: flex; align-items: center; gap: 6px;
  padding: 3px 6px;
  border-radius: 4px;
  color: var(--fg-muted);
  font-size: 12px;
}
.app-preview .ap-row .pre { color: var(--fg-faint); }
.app-preview .ap-row.active { background: var(--accent-bg); color: var(--fg); }
.app-preview .ap-row svg { width: 12px; height: 12px; flex-shrink: 0; }

.app-preview .ap-main {
  background: #0a0a0b;
  display: flex;
  flex-direction: column;
}
.app-preview .ap-titlebar {
  height: 38px;
  border-bottom: 1px solid #15151a;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg);
}
.app-preview .ap-titlebar svg { width: 14px; height: 14px; color: var(--fg-muted); }
.app-preview .ap-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 12px;
  flex: 1;
  overflow: hidden;
}
.app-preview .ap-col-title {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding: 0 4px 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.app-preview .ap-col-title .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--fg-subtle);
}
.app-preview .ap-col-title .dot.green { background: var(--success); }
.app-preview .ap-col-title .dot.yellow { background: var(--warning); }
.app-preview .ap-col-title .dot.blue { background: var(--info); }
.app-preview .ap-card {
  background: #111114;
  border: 1px solid #1a1a20;
  border-left: 2px solid var(--success);
  border-radius: 5px;
  padding: 7px 9px;
  margin-bottom: 6px;
  font-size: 11.5px;
  color: var(--fg);
  line-height: 1.35;
}
.app-preview .ap-card.yellow { border-left-color: var(--warning); }
.app-preview .ap-card.blue { border-left-color: var(--info); }
.app-preview .ap-card .ap-card-tags {
  margin-top: 4px;
  font-size: 10px;
  color: var(--fg-subtle);
  display: flex;
  align-items: center;
  gap: 4px;
}
.app-preview .ap-card .ap-card-tags .tag-prio { color: var(--danger); font-weight: 600; }

/* Concept hero image — uses the same product surface */
.concept-hero {
  margin: 8px 0 32px;
}

/* ============================================================
   Animations + utility
   ============================================================ */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.live-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--success);
  margin-right: 6px;
  animation: pulse 2s infinite;
  vertical-align: middle;
}

.gradient-blob {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-glow), transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

/* Responsive */
@media (max-width: 1100px) {
  .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .content { padding: 24px 20px 80px; }
  .search-trigger { min-width: 0; width: 36px; padding: 0; justify-content: center; }
  .search-trigger span, .search-trigger kbd { display: none; }
  .search-trigger svg { width: 16px; height: 16px; }
  .topbar { grid-template-columns: 1fr auto auto; padding: 0 12px; gap: 8px; }
  .topbar-left .brand-label, .topbar-left .brand-divider, .version-switcher { display: none; }
  .topbar-right .topbar-link { display: none; }
  .hero h1 { font-size: 32px; }
  .card-grid { grid-template-columns: 1fr; }
}