/* Darkian Studio — VS Code dark palette (OLED-like true blacks). */
:root {
  --canvas:        #000000;
  --canvas-inset:  #1e1e1e;
  --canvas-overlay:#2d2d2d;
  --border:        #3c3c3c;
  --border-muted:  #303030;
  --fg:            #cccccc;
  --fg-muted:      #969696;
  --accent:        #007acc;
  --accent-emphasis:#007acc;
  --success:       #89d185;
  --danger:        #f14c4c;
  --attention:     #cca700;

  --font-ui: "Segoe UI", -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1080px;
  --radius: 8px;
  --gap: 24px;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

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

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

h1, h2, h3, h4 { line-height: 1.25; font-weight: 600; color: #ffffff; }
h1 { font-size: 2rem; margin: 0 0 .4em; }
h2 { font-size: 1.5rem; margin: 1.8em 0 .6em; }
h3 { font-size: 1.2rem; margin: 1.5em 0 .5em; }

code, kbd, pre, samp { font-family: var(--font-mono); font-size: .9em; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent-emphasis); color: #fff; padding: 10px 16px; border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(0,0,0,.85);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 16px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: #ffffff; }
.brand:hover { text-decoration: none; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.site-nav a { color: var(--fg); padding: 8px 12px; border-radius: 6px; font-size: .95rem; }
.site-nav a:hover { background: var(--canvas-inset); text-decoration: none; }
.site-nav a[aria-current="page"] { color: #ffffff; background: var(--canvas-inset); }
.nav-cta {
  background: var(--accent-emphasis); color: #fff !important; font-weight: 600;
}
.nav-cta:hover { background: #1c8cd9; }
.nav-gh { border: 1px solid var(--border); }

.nav-toggle, .nav-toggle-label { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 6px; font-weight: 600; font-size: .98rem;
  border: 1px solid var(--border); color: var(--fg); background: var(--canvas-inset);
}
.btn:hover { text-decoration: none; border-color: var(--fg-muted); }
.btn-primary { background: var(--accent-emphasis); border-color: var(--accent-emphasis); color: #fff; }
.btn-primary:hover { background: #1c8cd9; border-color: #1c8cd9; }
.btn-ghost { background: transparent; }

/* ---------- Generic page ---------- */
.page { padding: 40px 20px 72px; }
.page-head { margin-bottom: 8px; }
.lede { font-size: 1.15rem; color: var(--fg-muted); margin-top: 0; max-width: 70ch; }
/* Standalone content pages (install/faq/changelog) fill the wrap like the
   home sections, rather than leaving a narrow left-aligned column. */
.page .prose { max-width: none; }

/* ---------- Prose ---------- */
.prose { max-width: 74ch; }
.prose.full { max-width: none; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.1em; }
.prose li { margin: .3em 0; }
.prose h2 { border-bottom: 1px solid var(--border-muted); padding-bottom: .3em; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }

.prose code {
  background: var(--canvas-inset); border: 1px solid var(--border-muted);
  padding: .15em .4em; border-radius: 6px;
}
.prose pre {
  background: var(--canvas-inset); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; overflow: auto; line-height: 1.5;
}
.prose pre code { background: none; border: 0; padding: 0; }

.prose blockquote {
  margin: 0 0 1.1em; padding: .4em 1em; color: var(--fg-muted);
  border-left: 3px solid var(--border);
}

.prose table { width: 100%; border-collapse: collapse; margin: 0 0 1.4em; font-size: .92rem; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--canvas-inset); color: #ffffff; }
.prose tr:nth-child(even) td { background: rgba(30,30,30,.5); }

/* Copyable command block */
.code-block { position: relative; margin: 0 0 1.2em; }
.code-block pre { margin: 0; }
.copy-btn {
  position: absolute; top: 8px; right: 8px;
  background: var(--canvas-overlay); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 10px; font-size: .8rem; cursor: pointer; font-family: var(--font-ui);
}
.copy-btn:hover { border-color: var(--fg-muted); }

/* Callouts */
.callout { border: 1px solid var(--border); border-left-width: 3px; border-radius: var(--radius);
  padding: 14px 16px; margin: 0 0 1.2em; background: var(--canvas-inset); }
.callout p:last-child { margin-bottom: 0; }
.callout.info { border-left-color: var(--accent); }
.callout.warn { border-left-color: var(--attention); }
.callout.danger { border-left-color: var(--danger); }
.callout.success { border-left-color: var(--success); }
.callout strong { color: #ffffff; }

/* ---------- Hero ---------- */
.hero { padding: 72px 20px 40px; border-bottom: 1px solid var(--border); }
.hero-inner {
  max-width: var(--wrap); margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  align-items: center; gap: 48px;
}
.hero-copy { min-width: 0; }
.hero-art { display: flex; justify-content: center; }
.hero-art img {
  width: 320px; height: auto;
  filter: drop-shadow(0 0 48px rgba(0, 122, 204, .22));
}
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { display: none; }
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .82rem; color: var(--fg-muted); border: 1px solid var(--border);
  padding: 4px 12px; border-radius: 999px; background: var(--canvas-inset); margin-bottom: 20px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); letter-spacing: -.02em; max-width: 16ch; }
.hero .sub { font-size: 1.2rem; color: var(--fg-muted); max-width: 60ch; margin: .6em 0 0; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-note { margin-top: 16px; font-size: .88rem; color: var(--fg-muted); }

/* ---------- Sections ---------- */
.section { padding: 56px 20px; border-bottom: 1px solid var(--border-muted); }
.section-head { max-width: 60ch; margin-bottom: 32px; }
.section-head h2 { margin-top: 0; border: 0; padding: 0; }
.section-head p { color: var(--fg-muted); margin: 0; }

/* Steps strip */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; list-style: none; margin: 0; padding: 0; }
.step { background: var(--canvas-inset); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%; background: var(--canvas-overlay);
  border: 1px solid var(--border); color: var(--accent); font-weight: 700; font-family: var(--font-mono); margin-bottom: 12px;
}
.step h3 { margin: 0 0 6px; font-size: 1.05rem; }
.step p { margin: 0; color: var(--fg-muted); font-size: .92rem; }

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { background: var(--canvas-inset); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature h3 { margin: 0 0 6px; font-size: 1.1rem; }
.feature p { margin: 0; color: var(--fg-muted); font-size: .94rem; }
.feature .ic { font-family: var(--font-mono); color: var(--accent); font-size: .85rem; letter-spacing: .05em; }

/* Compare teaser */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare-card { background: var(--canvas-inset); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.compare-card h3 { margin-top: 0; }

/* ---------- Install tabs (CSS-only, no JS blocking) ---------- */
.tabs { margin: 8px 0 24px; }
.tablist { display: flex; gap: 4px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tabs input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.tablabel {
  padding: 10px 18px; cursor: pointer; color: var(--fg-muted); font-weight: 600;
  border: 1px solid transparent; border-bottom: none; border-radius: 6px 6px 0 0;
}
.tabpanel { display: none; padding-top: 24px; }
#tab-android:checked ~ .tablist label[for="tab-android"],
#tab-linux:checked ~ .tablist label[for="tab-linux"],
#tab-macos:checked ~ .tablist label[for="tab-macos"] {
  color: #ffffff; background: var(--canvas-inset); border-color: var(--border);
  border-bottom-color: var(--canvas-inset); margin-bottom: -1px;
}
#tab-android:checked ~ #panel-android,
#tab-linux:checked ~ #panel-linux,
#tab-macos:checked ~ #panel-macos { display: block; }

/* Numbered steps in prose */
ol.flow { counter-reset: n; list-style: none; padding: 0; }
ol.flow > li {
  position: relative; padding-left: 44px; margin-bottom: 20px;
}
ol.flow > li::before {
  counter-increment: n; content: counter(n);
  position: absolute; left: 0; top: 0; width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: var(--canvas-inset); border: 1px solid var(--border); border-radius: 50%;
  color: var(--accent); font-weight: 700; font-family: var(--font-mono);
}

/* ---------- Docs shell ---------- */
.docs-shell { display: grid; grid-template-columns: 240px 1fr; gap: 40px; padding: 32px 20px 72px; align-items: start; }
.docs-sidebar { position: sticky; top: 80px; }
.docs-nav-toggle, .docs-nav-label { display: none; }
.docs-nav-group { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); margin: 18px 0 6px; }
.docs-nav ul { list-style: none; margin: 0 0 8px; padding: 0; }
.docs-nav li { margin: 0; }
.docs-nav a { display: block; padding: 6px 10px; border-radius: 6px; color: var(--fg); font-size: .93rem; }
.docs-nav a:hover { background: var(--canvas-inset); text-decoration: none; }
.docs-nav a[aria-current="page"] { background: var(--canvas-inset); color: var(--accent); font-weight: 600; }
.docs-content { min-width: 0; }
.docs-content .prose { max-width: 80ch; }

/* Comparison legend */
.legend { font-size: .88rem; color: var(--fg-muted); }

/* Changelog */
.release { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 20px; background: var(--canvas-inset); }
.release h2 { margin-top: 0; border: 0; padding: 0; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.release .date { font-size: .85rem; color: var(--fg-muted); font-weight: 400; font-family: var(--font-mono); }
.badge { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--fg-muted); }
.badge.pre { color: var(--attention); border-color: var(--attention); }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--border-muted); padding: 20px 0; }
.faq-item h2 { margin: 0 0 8px; font-size: 1.15rem; border: 0; padding: 0; }
.faq-item .answer > p:first-child { color: #ffffff; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; background: var(--canvas-inset); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding: 48px 20px 32px; }
.footer-brand p { color: var(--fg-muted); font-size: .92rem; max-width: 30ch; }
.footer-col h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); margin: 0 0 12px; }
.footer-col a { display: block; color: var(--fg); padding: 4px 0; font-size: .93rem; }
.footer-legal { border-top: 1px solid var(--border); padding: 20px; }
.footer-legal p { margin: 0; color: var(--fg-muted); font-size: .85rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-toggle-label {
    display: inline-flex; flex-direction: column; gap: 5px; margin-left: auto;
    cursor: pointer; padding: 8px;
  }
  .nav-toggle-label span { width: 24px; height: 2px; background: var(--fg); border-radius: 2px; }
  .site-nav {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 20px;
    background: var(--canvas); border-bottom: 1px solid var(--border);
  }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .site-nav a { padding: 10px 12px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .features { grid-template-columns: 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .docs-shell { grid-template-columns: 1fr; gap: 20px; }
  .docs-sidebar { position: static; }
  .docs-nav { display: none; padding-top: 8px; }
  .docs-nav-label {
    display: block; cursor: pointer; padding: 10px 14px; background: var(--canvas-inset);
    border: 1px solid var(--border); border-radius: 6px; font-weight: 600;
  }
  .docs-nav-toggle:checked ~ .docs-nav { display: block; }
}

@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}