/* Maintenance gate via root class — no JS race conditions */
html.locked .layout { display: none; }
html.locked #maintenance { display: flex; }   /* ensure it's visible */
html.unlocked #maintenance { display: none; } /* hide overlay when unlocked */
:root{
  --bg:#0b0b0f;--card:#111319;--border:#262a33;--text:#e8e9ef;--muted:#b7bccb;--link:#ffd15c;--accent:#ffcc4d;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica Neue,Arial,Noto Sans,Apple Color Emoji,Segoe UI Emoji}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
.site-header{background:linear-gradient(180deg,#1a1c23,#12141a);border-bottom:1px solid var(--border)}
.banner{display:block;width:100%;height:auto;max-height:240px;padding:0px;}
.layout{display:grid;grid-template-columns:280px 1fr;min-height:calc(100vh - 240px)}
@media(max-width:860px){.layout{grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid var(--border)}}
.sidebar{background:var(--card);border-right:1px solid var(--border);padding:18px 16px}
.brand{font-weight:700;letter-spacing:.2px;margin:2px 2px 14px}
#nav{display:grid;gap:6px}
#nav a{display:block;padding:10px 12px;border-radius:10px;color:var(--text);border:1px solid transparent}
#nav a:hover{background:rgba(255,255,255,.03);border-color:var(--border)}
#nav a.active{background:rgba(255,255,255,.06);border-color:var(--border)}
.sidebar-footer{margin-top:18px;padding-top:12px;border-top:1px dashed var(--border)}
.ibom-link{font-weight:600}
.content{padding:26px 28px 56px}
.doc-content{max-width:980px}
.doc-content h1,.doc-content h2,.doc-content h3{line-height:1.25;margin:1.25em 0 .5em}
.doc-content h1{font-size:2rem}.doc-content h2{font-size:1.5rem}.doc-content h3{font-size:1.2rem;color:var(--muted)}
.doc-content p,.doc-content ul,.doc-content ol{color:var(--text);margin:.7em 0}
.doc-content code,.doc-content pre{background:#0f1117;border:1px solid var(--border);border-radius:10px;padding:.15em .4em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Liberation Mono,monospace}
.doc-content pre{padding:12px 14px;overflow:auto}
.doc-content img{display:block;max-width:100%;height:auto;border-radius:12px;border:1px solid var(--border);cursor:zoom-in}
.site-footer{border-top:1px solid var(--border);margin-top:36px;padding-top:12px;color:var(--muted)}
.medium-zoom-image {
  max-width: none !important;
  max-height: none !important;
}

/* --- Maintenance Overlay --- */
.hidden { display: none; }
#maintenance {
  position: fixed;
  inset: 0;
  background: #0b0b0f radial-gradient(circle at 50% 35%, #ff000008, #000);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #eee;
  z-index: 9999;
  text-align: center;
}
.maintenance-inner {
  background: rgba(0,0,0,0.6);
  padding: 40px 50px;
  border-radius: 14px;
  border: 1px solid #333;
}
#maintenance h1 {
  font-size: 1.8rem;
  color: var(--accent, #ffcc4d);
  margin-bottom: 0.4em;
}


/* iBOM embed area */
.ibom-frame-wrap {
  height: calc(100vh - 240px - 56px);
  min-height: 480px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #000;
}
.ibom-frame {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

/* Root layout fills the viewport */
.layout {
  display: flex;
  flex-direction: row;
  height: 100vh; /* lock to viewport */
  overflow: hidden; /* prevent double scroll */
}

/* Sidebar (fixed-height column) */
.sidebar {
  flex: 0 0 260px;       /* fixed width */
  height: 100vh;         /* always full viewport height */
  display: flex;
  flex-direction: column;
  background: #1a1a1a;
  color: #eee;
  border-right: 1px solid var(--border);
  box-sizing: border-box;
}

/* Navigation area grows to fill sidebar */
.sidebar nav {
  flex: 1 1 auto;
  overflow: hidden; /* ensure nav never scrolls */
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
}

/* Footer pinned to bottom */
.sidebar-footer {
  flex-shrink: 0;
  padding: 12px;
  border-top: 1px dashed var(--border);
  text-align: center;
  font-size: 0.85em;
}

/* Main content takes rest of space and scrolls */
.content {
  flex: 1 1 auto;
  height: 100vh;         /* same as sidebar */
  overflow-y: auto;      /* only scrollable area */
  background: #181818;
  color: #eee;
  box-sizing: border-box;
  padding: 24px;
}

/* Optional header area inside main */
.top-header {
  position: sticky;
  top: 0;
  background: #181818;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

/* Nav links */
#nav a {
  display: block;
  color: #ccc;
  text-decoration: none;
  padding: 6px 8px;
}
#nav a.active {
  color: #fff;
  font-weight: bold;
}

/* Sidebar background fills full viewport */
.sidebar {
  height: 100vh;
  background: #1a1a1a;
  display: flex;
  flex-direction: column;
}

/* Nav area stops flex items from expanding */
#nav {
  display: block;          /* not grid/flex — prevents stretching */
  flex: none;              /* don't grow or shrink */
  padding: 12px;
  margin: 0;
}

/* Footer stays pinned at bottom */
.sidebar-footer {
  margin-top: auto;        /* pushes footer to bottom */
  border-top: 1px dashed var(--border);
  padding: 10px 12px;
}

/* Ensure the page layout fills viewport */
.layout {
  display: flex;
  height: 100vh;
}

.hamburger,
.mobile-topbar {
  display: none;
}

/* ==================== MOBILE RESPONSIVE ==================== */
@media (max-width: 768px) {
  .layout {
    flex-direction: column;       /* stack top to bottom */
    height: auto;
  }

  :root { --hamburger-offset: 12px; --hamburger-size: 40px; --hamburger-gap: 24px; }

  .sidebar {
    padding-top: calc(var(--hamburger-offset) + var(--hamburger-size) + var(--hamburger-gap));
  }
  
  .banner {
    margin-top: 75px;
   }

  /* Sidebar becomes a hidden drawer */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 220px;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 1000;
    box-shadow: 2px 0 6px rgba(0,0,0,0.4);
  }

  /* Sidebar visible when toggled */
  .sidebar.open {
    transform: translateX(0);
  }

  /* Overlay behind the sidebar when open */
  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    z-index: 999;
  }

  .sidebar-overlay.show {
    display: block;
  }

  /* Main content now full width */
  .content,
  main,
  article {
    margin-left: 0;
    height: auto;
    overflow: visible;
  }


  /* fixed top bar that stays with the hamburger */
  .mobile-topbar {
    display: flex !important;
    align-items: center;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 75px;
    background: #1a1a1a;
    color: #fff;
    border-bottom: 1px solid var(--border);
    padding: 0 12px;
    z-index: 1100; /* above drawer + overlay */
  }
  .mobile-topbar .page-title { 
    margin-left: 55px;
    font-weight: 600; 
   }

  .hamburger {
    display: block !important;
    position: fixed;
    top: 12px;
    left: 12px;             /* change to right:12px; if you prefer top-right */
    z-index: 1100;          /* higher than sidebar + overlay */
    background: #1a1a1a;
    color: #fff;
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 40px;
    height: 40px;
    font-size: 22px;
    cursor: pointer;
  }
}