/* Shared left-sidebar navigation. Scoped to #app-nav. */
:root {
  --nav-w-expanded: 230px;
  --nav-w-collapsed: 56px;
  --nav-bg: #1a1512;
  --nav-fg: rgba(255,255,255,.65);
  --nav-fg-dim: rgba(255,255,255,.4);
  --nav-fg-bright: rgba(255,255,255,.95);
  --nav-amber: #c8590a;
  --nav-rule: rgba(255,255,255,.08);
}

#app-nav {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--nav-w-expanded);
  background: var(--nav-bg);
  color: var(--nav-fg);
  font-family: 'IBM Plex Mono', monospace;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width .18s ease;
  overflow: hidden;
}
#app-nav.collapsed { width: var(--nav-w-collapsed); }

body.has-app-nav { padding-left: var(--nav-w-expanded); transition: padding-left .18s ease; }
body.has-app-nav.nav-collapsed { padding-left: var(--nav-w-collapsed); }

#app-nav .nav-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 18px 14px; border-bottom: 1px solid var(--nav-rule);
  text-decoration: none; color: var(--nav-amber);
  font-size: 12px; letter-spacing: .14em;
  white-space: nowrap;
}
#app-nav .nav-brand img { height: 20px; flex: 0 0 auto; }
#app-nav .nav-brand .brand-text { font-weight: 700; }
#app-nav.collapsed .nav-brand { padding: 16px 14px; justify-content: center; }
#app-nav.collapsed .nav-brand .brand-text { display: none; }

#app-nav .nav-toggle {
  position: absolute; top: 14px; right: -12px;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--nav-bg); color: var(--nav-fg-dim);
  border: 1px solid var(--nav-rule); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; padding: 0; line-height: 1;
  transition: color .15s, transform .18s;
}
#app-nav .nav-toggle:hover { color: var(--nav-amber); }
#app-nav.collapsed .nav-toggle { transform: rotate(180deg); }

#app-nav .nav-scroll {
  flex: 1 1 auto; overflow-y: auto; overflow-x: hidden;
  padding: 12px 0;
}
#app-nav .nav-scroll::-webkit-scrollbar { width: 4px; }
#app-nav .nav-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 2px; }

#app-nav .nav-group { margin: 0 0 6px; }
#app-nav .nav-group-label {
  display: block;
  padding: 14px 18px 6px;
  font-size: 9px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--nav-fg-dim);
  white-space: nowrap; overflow: hidden;
}
#app-nav.collapsed .nav-group-label {
  font-size: 0; padding: 12px 0 4px; height: 1px;
  background: var(--nav-rule); margin: 8px 14px;
  letter-spacing: 0;
}

#app-nav .nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 18px;
  color: var(--nav-fg); text-decoration: none;
  font-size: 12px;
  border-left: 2px solid transparent;
  transition: color .12s, background .12s, border-color .12s;
  white-space: nowrap;
}
#app-nav .nav-item:hover { color: var(--nav-fg-bright); background: rgba(255,255,255,.03); }
#app-nav .nav-item.active {
  color: var(--nav-amber);
  border-left-color: var(--nav-amber);
  background: rgba(200,89,10,.08);
}
#app-nav .nav-item .nav-icon {
  flex: 0 0 20px; width: 20px; height: 20px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px;
}
#app-nav.collapsed .nav-item { padding: 10px 0; justify-content: center; }
#app-nav.collapsed .nav-item .nav-label { display: none; }

#app-nav .nav-bottom {
  border-top: 1px solid var(--nav-rule);
  padding: 10px 0;
}
#app-nav .nav-user {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 18px;
  border-left: 2px solid transparent;
}
#app-nav .nav-avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--nav-amber); color: #fff;
  font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 26px;
}
#app-nav .nav-uname {
  font-size: 11px; color: var(--nav-fg);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  flex: 1 1 auto;
}
#app-nav .nav-signout, #app-nav .nav-signin {
  display: block; margin: 6px 14px; padding: 7px 12px;
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: .14em;
  text-align: center; text-decoration: none; cursor: pointer;
  background: transparent; color: var(--nav-fg-dim);
  border: 1px solid var(--nav-rule); border-radius: 3px;
  transition: color .12s, border-color .12s;
}
#app-nav .nav-signout:hover, #app-nav .nav-signin:hover {
  color: var(--nav-amber); border-color: var(--nav-amber);
}
#app-nav.collapsed .nav-uname,
#app-nav.collapsed .nav-signout,
#app-nav.collapsed .nav-signin { display: none; }
#app-nav.collapsed .nav-user { justify-content: center; padding: 10px 0; }

/* Mobile */
#app-nav-hamburger {
  display: none;
  position: fixed; top: 12px; left: 12px; z-index: 101;
  width: 36px; height: 36px; border-radius: 4px;
  background: var(--nav-bg); color: #fff;
  border: 1px solid var(--nav-rule); cursor: pointer;
  font-size: 18px; line-height: 1; padding: 0;
}
#app-nav-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.5); z-index: 99;
}
@media (max-width: 768px) {
  body.has-app-nav { padding-left: 0; }
  #app-nav { transform: translateX(-100%); width: 240px; }
  #app-nav.mobile-open { transform: translateX(0); }
  #app-nav .nav-toggle { display: none; }
  #app-nav-hamburger { display: flex; align-items: center; justify-content: center; }
  body.has-app-nav.mobile-open #app-nav-backdrop { display: block; }
}