/* NeuroCGMD Documentation — Shared Stylesheet */

:root {
  --bg: #0D1117;
  --bg-card: #161B22;
  --bg-card-alt: #1A2028;
  --bg-hover: #21262D;
  --bg-sidebar: #0D1117;
  --border: #30363D;
  --text: #E6EDF3;
  --text-muted: #8B949E;
  --blue: #8DB3DA;
  --teal: #7EAFA6;
  --purple: #AA9BC8;
  --gold: #C8B07A;
  --red: #F85149;
  --green: #7FAE87;
  --pink: #B88AA7;
  --orange: #B7926B;
  --font: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --sidebar-w: 260px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.7; font-size: 15px; }
a { color: var(--blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--teal); }
code { font-family: var(--mono); background: var(--bg-card); padding: 2px 6px; border-radius: 4px; font-size: 0.88em; color: var(--gold); }
pre { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; padding: 20px; overflow-x: auto; margin: 20px 0; font-family: var(--mono); font-size: 0.85em; line-height: 1.65; }
pre code { background: none; padding: 0; }
img { max-width: 100%; border-radius: 8px; }
h1,h2,h3,h4 { font-weight: 600; letter-spacing: -0.02em; }
ul, ol { margin: 12px 0 12px 28px; color: var(--text-muted); }
li { margin: 4px 0; }
p { margin: 12px 0; }

/* ── SIDEBAR ── */
.sidebar { position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-w); background: var(--bg-sidebar); border-right: 1px solid var(--border); overflow-y: auto; padding: 20px 0; z-index: 100; }
.sidebar .logo { padding: 8px 20px 20px; }
.sidebar .logo a { font-size: 20px; font-weight: 700; color: var(--blue); letter-spacing: -0.03em; }
.sidebar .logo a span { color: var(--purple); }
.sidebar .logo .version { display: block; font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.sidebar .section-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); padding: 16px 20px 6px; }
.sidebar a.nav-link { display: block; padding: 6px 20px 6px 28px; font-size: 14px; color: var(--text-muted); transition: all 0.15s; border-left: 2px solid transparent; }
.sidebar a.nav-link:hover { color: var(--text); background: var(--bg-hover); }
.sidebar a.nav-link.active { color: var(--blue); border-left-color: var(--blue); background: #58A6FF08; }
.sidebar a.nav-link .tag { font-size: 10px; padding: 1px 6px; border-radius: 8px; margin-left: 6px; }
.sidebar a.nav-link .tag.new { background: var(--green)20; color: var(--green); }

/* ── MAIN CONTENT ── */
.main { margin-left: var(--sidebar-w); min-height: 100vh; }
.content { max-width: 900px; margin: 0 auto; padding: 48px 40px 80px; }
.content h1 { font-size: 36px; margin-bottom: 8px; }
.content h1 .accent { color: var(--blue); }
.content .page-desc { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; line-height: 1.6; }
.content h2 { font-size: 26px; margin: 48px 0 16px; padding-top: 24px; border-top: 1px solid var(--border); }
.content h2:first-of-type { border-top: none; padding-top: 0; }
.content h3 { font-size: 20px; margin: 32px 0 12px; color: var(--text); }
.content h4 { font-size: 16px; margin: 24px 0 8px; }

/* ── TABLES ── */
table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
th { text-align: left; padding: 10px 14px; background: var(--bg-card); border: 1px solid var(--border); color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
td { padding: 10px 14px; border: 1px solid var(--border); }
tr:hover td { background: var(--bg-card); }

/* ── CARDS ── */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 24px 0; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; padding: 18px; transition: border-color 0.2s; }
.card:hover { border-color: #495366; }
.card h4 { font-size: 15px; margin-bottom: 6px; }
.card p { font-size: 13px; color: var(--text-muted); }
.card.cg { border-top: 3px solid var(--blue); }
.card.qc { border-top: 3px solid var(--purple); }
.card.ml { border-top: 3px solid var(--gold); }
.card.aa { border-top: 3px solid var(--teal); }

/* ── PLOT GALLERY ── */
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin: 24px 0; }
.gallery-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; transition: border-color 0.2s; }
.gallery-item:hover { border-color: #495366; }
.gallery-item img { width: 100%; display: block; }
.gallery-item .caption { padding: 12px 14px; }
.gallery-item .caption h4 { font-size: 13px; margin-bottom: 3px; }
.gallery-item .caption p { font-size: 12px; color: var(--text-muted); margin: 0; }
.gallery-item.wide { grid-column: span 2; }

/* ── STEPS ── */
.steps { counter-reset: step; margin: 24px 0; }
.step { display: flex; gap: 16px; margin: 24px 0; }
.step::before { counter-increment: step; content: counter(step); display: flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; border-radius: 50%; background: var(--blue)15; color: var(--blue); font-weight: 700; font-size: 15px; border: 2px solid var(--blue)40; flex-shrink: 0; }
.step-content { flex: 1; }
.step-content h4 { margin-bottom: 6px; }
.step-content p { color: var(--text-muted); font-size: 14px; }

/* ── NOTE / TIP / WARNING ── */
.note { background: var(--blue)08; border-left: 3px solid var(--blue); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 20px 0; font-size: 14px; }
.tip { background: var(--green)08; border-left: 3px solid var(--green); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 20px 0; font-size: 14px; }
.warning { background: var(--gold)08; border-left: 3px solid var(--gold); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 20px 0; font-size: 14px; }

/* ── CONTACT ── */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin: 24px 0; }
.contact-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; text-align: center; transition: border-color 0.3s; display: block; }
.contact-card:hover { border-color: var(--teal); }
.contact-card .type { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px; }
.contact-card .subject { font-family: var(--mono); font-size: 11px; color: var(--gold); margin-top: 8px; }

/* ── FOOTER ── */
.footer { text-align: center; padding: 48px 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .content { padding: 24px 16px 60px; }
  .gallery-item.wide { grid-column: span 1; }
}


/* ── EXTERNAL-FACING REFINEMENTS ── */
.utility-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: -8px 0 28px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: #0F141B;
  border-radius: 10px;
}
.crumbs { font-size: 12px; color: var(--text-muted); }
.crumbs a { color: var(--text-muted); }
.crumbs a:hover { color: var(--text); }
.utility-actions, .hero-actions, .page-nav { display: flex; gap: 10px; flex-wrap: wrap; }
.u-btn, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.u-btn:hover, .btn:hover { border-color: #495366; color: var(--text); background: var(--bg-hover); }
.btn.primary { background: #1A2530; border-color: #3C4A58; color: #D4DEE8; }
.btn.primary:hover { background: #202D39; }
.btn.ghost, .u-btn.ghost { background: transparent; }
.hero-panel {
  margin: 12px 0 28px;
  padding: 26px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #14181E;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid #3A4553;
  background: #11171E;
  color: #AAB6C3;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel h1 { margin-bottom: 10px; }
.hero-panel .page-desc { max-width: 820px; margin-bottom: 22px; }
.stat-grid, .pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 22px;
}
.stat, .info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.stat .value {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.stat .label, .info-card p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}
.info-card h4 {
  margin: 0 0 8px;
  font-size: 15px;
}
.statement, .callout {
  margin: 26px 0;
  padding: 20px 22px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.statement p:last-child, .callout p:last-child { margin-bottom: 0; }
.callout { background: #151B22; }
.page-nav {
  justify-content: space-between;
  align-items: center;
  margin: 36px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.page-nav .spacer { flex: 1; }
.footer { line-height: 1.75; }
@media (max-width: 900px) {
  .utility-bar { position: static; margin-top: 0; }
}
@media (max-width: 700px) {
  .hero-panel { padding: 22px 18px; }
  .page-nav { flex-direction: column; align-items: stretch; }
  .utility-actions, .hero-actions { width: 100%; }
  .u-btn, .btn { flex: 1 1 auto; }
}


/* restrained interaction polish */
.nd:hover { transform: none !important; box-shadow: none !important; background: #171C23; }
.chip:hover { transform: none !important; }
.cc:hover, .gi:hover, .contact-card:hover { border-color: #495366 !important; }
.eqbar:hover { border-color: #495366 !important; }


/* ── MOBILE NAVIGATION ── */
.mobile-topbar {
  display: none;
}

@media (max-width: 900px) {
  body { font-size: 14px; }
  pre { padding: 16px; font-size: 0.8em; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
  .utility-bar {
    position: sticky;
    top: 10px;
    margin: 0 0 20px;
    padding: 10px 12px;
  }
  .utility-actions {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 2px;
  }
  .utility-actions .u-btn {
    white-space: nowrap;
    flex: 0 0 auto;
  }
  .mobile-topbar {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 120;
    align-items: center;
    gap: 10px;
    justify-content: space-between;
    padding: 12px 14px;
    background: rgba(13, 17, 23, 0.98);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
  }
  .mobile-brand {
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.02em;
  }
  .mobile-brand span { color: var(--purple); }
  .mobile-actions {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .mobile-install-link,
  .mobile-menu summary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    list-style: none;
    cursor: pointer;
  }
  .mobile-install-link {
    background: #1A2530;
    border-color: #3C4A58;
    color: #D4DEE8;
  }
  .mobile-menu { position: relative; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    width: min(320px, calc(100vw - 28px));
    padding: 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #11161D;
    box-shadow: 0 14px 34px rgba(0,0,0,0.28);
  }
  .mobile-menu-panel .menu-title {
    padding: 6px 8px 8px;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .mobile-menu-link {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
  }
  .mobile-menu-link:hover,
  .mobile-menu-link.active {
    background: var(--bg-hover);
    color: var(--blue);
  }
}