/* ============================================================================
   Axis Utility — HTML Manual stylesheet
   Self-contained, no external fonts or network requests (works fully offline).
   Layout and components follow the GranulOre manual pattern.
   ============================================================================ */

:root {
  --bg:            #0c0d10;
  --bg-panel:      #15171c;
  --bg-elev:       #1b1e25;
  --ink:           #e7e9ee;
  --ink-soft:      #a3a8b4;
  --ink-faint:     #6f7682;
  --accent:        #4fb6cf;   /* primary links / card titles */
  --accent-l:      #4fb6cf;   /* brand accent */
  --accent-r:      #b84ffb;   /* Right channel */
  --accent-soft:   #57d08a;   /* tips / secondary */
  --line:          #2a2e38;
  --code-bg:       #11131a;
  --warn-bg:       #2a2410;
  --warn-line:     #ffcc44;
  --tip-bg:        #122421;
  --tip-line:      #57d08a;
  --max:           980px;
  --radius:        10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---- Layout: fixed sidebar + scrolling content ------------------------- */
.layout { display: flex; align-items: flex-start; }

#sidebar {
  position: sticky;
  top: 0;
  flex: 0 0 264px;
  height: 100vh;
  overflow-y: auto;
  background: var(--bg-panel);
  border-right: 1px solid var(--line);
  padding: 22px 18px 60px;
}

.brand-logo {
  display: block;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  line-height: 0;
}
.brand-logo img {
  display: block;
  width: 100%;
  max-width: 228px;
  height: auto;
  opacity: 0.92;
}
.brand-logo:hover img { opacity: 1; }

#sidebar .brand { font-weight: 700; font-size: 17px; letter-spacing: .2px; }
#sidebar .brand b { color: var(--accent-l); }
#sidebar .brand small {
  display: block;
  font-weight: 400;
  color: var(--ink-faint);
  font-size: 12px;
  margin-top: 2px;
}
#sidebar nav { margin-top: 18px; }
#sidebar nav a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 14px;
}
#sidebar nav a:hover { background: var(--bg-elev); color: var(--ink); }
#sidebar nav a.section {
  margin-top: 14px;
  color: var(--ink-faint);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: .08em;
  padding-left: 6px;
  pointer-events: none;
}
#sidebar nav a.sub { padding-left: 22px; font-size: 13px; }

main {
  flex: 1 1 auto;
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 36px 120px;
}

/* ---- Typography -------------------------------------------------------- */
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 {
  font-size: 23px;
  margin: 52px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 16px;
}
[id] { scroll-margin-top: 16px; }
h3 { font-size: 18px; margin: 30px 0 8px; color: var(--ink); scroll-margin-top: 16px; }
h4 { font-size: 15px; margin: 20px 0 6px; color: var(--accent-soft); text-transform: uppercase; letter-spacing: .05em; }
p  { margin: 10px 0; color: var(--ink); }
a  { color: var(--accent); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
strong { color: #fff; }
.lead { font-size: 18px; color: var(--ink-soft); }
.muted { color: var(--ink-faint); }
.kbd, code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13.5px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
}
kbd { box-shadow: 0 1px 0 var(--line); }

/* ---- Header banner ----------------------------------------------------- */
.hero {
  background: linear-gradient(135deg, #1a1d26, #0c0d10);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 10px;
}
.hero .ver {
  display: inline-block;
  background: var(--accent-l);
  color: #0a1628;
  font-weight: 700;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 20px;
}

.credits-block { margin: 8px 0 20px; }
.credits-logo {
  display: inline-block;
  margin-top: 12px;
  line-height: 0;
}
.credits-logo img {
  display: block;
  height: 48px;
  width: auto;
  max-width: min(100%, 320px);
  opacity: 0.95;
}
.credits-logo:hover img { opacity: 1; }

/* ---- Quick-jump card grid ---------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.cards .card {
  display: block;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  text-decoration: none;
  color: var(--ink);
  margin: 0;
}
.cards .card:hover { border-color: var(--accent); }
.cards .card b { color: var(--accent); }
.cards .card span {
  display: block;
  color: var(--ink-faint);
  font-size: 13px;
  margin-top: 4px;
}

/* ---- Channel tags & format pills --------------------------------------- */
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 20px;
  vertical-align: middle;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}
.tag.l { color: var(--accent-l); border-color: var(--accent-l); }
.tag.r { color: var(--accent-r); border-color: var(--accent-r); }

.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.pill {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---- Tables ------------------------------------------------------------ */
table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 8px 11px; text-align: left; vertical-align: top; }
th { background: var(--bg-elev); color: var(--ink); font-weight: 600; }
tr:nth-child(even) td { background: rgba(255,255,255,0.015); }
td code { font-size: 12.5px; }

/* ---- Callouts ---------------------------------------------------------- */
.note, .tip, .warn {
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 16px 0;
  border-left: 4px solid var(--line);
  background: var(--bg-panel);
}
.tip  { border-left-color: var(--tip-line);  background: var(--tip-bg); }
.warn { border-left-color: var(--warn-line); background: var(--warn-bg); }
.note b, .tip b, .warn b { display: block; margin-bottom: 3px; }

/* ---- Figures ----------------------------------------------------------- */
figure { margin: 22px 0; }
figure.center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
figure.center img {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
figure img {
  display: block;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
figcaption {
  color: var(--ink-faint);
  font-size: 13px;
  margin-top: 8px;
  text-align: center;
}

/* Placeholder until you add PNG screenshots (see assets/README.txt) */
.screenshot-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 24px;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  color: var(--ink-soft);
  font-size: 14px;
  text-align: center;
  line-height: 1.5;
}
.screenshot-slot code {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--accent);
}

footer {
  color: var(--ink-faint);
  font-size: 13px;
  margin-top: 60px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

/* ---- Platform switcher (macOS / Windows) ------------------------------- */
.platform-bar {
  display: flex;
  gap: 8px;
  margin: 0 0 20px;
  padding: 6px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.platform-bar button {
  flex: 1 1 0;
  margin: 0;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-elev);
  color: var(--ink-soft);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.platform-bar button:hover {
  color: var(--ink);
  border-color: var(--ink-faint);
}
.platform-bar button.active {
  background: var(--accent-l);
  border-color: var(--accent-l);
  color: #0a1628;
}
body[data-platform="mac"] .plat-win { display: none !important; }
body[data-platform="win"] .plat-mac { display: none !important; }

/* ---- Responsive / print ------------------------------------------------ */
@media (max-width: 860px) {
  .layout { display: block; }
  #sidebar {
    position: static;
    height: auto;
    width: auto;
    flex: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  main { padding: 24px 18px 80px; }
}
@media print {
  #sidebar { display: none; }
  body { background: #fff; color: #000; }
  main { max-width: none; }
  .hero, .note, .tip, .warn, th { background: #fff !important; }
  a { color: #000; text-decoration: underline; }
  h2 { page-break-after: avoid; }
  figure, table { page-break-inside: avoid; }
}