:root{
  --bg:#0b0f14;
  --panel:#101824;
  --panel2:#0f1722;
  --text:#e7edf6;
  --muted:#9fb0c3;
  --accent:#7dd3fc;
  --line:#203044;
  --chip:#142033;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background: linear-gradient(180deg, #070a0e, var(--bg));
  color:var(--text);
}

.app{
  display:flex;
  min-height:100vh;
}

.sidebar{
  width:300px;
  background: rgba(16,24,36,.88);
  border-right:1px solid var(--line);
  padding:18px;
  position:sticky;
  top:0;
  height:100vh;
}

.brand{padding:8px 8px 16px}
.brand-title{font-weight:700; font-size:18px}
.brand-sub{color:var(--muted); font-size:12px; margin-top:4px}

.nav{display:flex; flex-direction:column; gap:8px; margin-top:8px}
.nav-item{
  display:flex; gap:10px; align-items:center;
  padding:10px 12px;
  border:1px solid transparent;
  border-radius:12px;
  text-decoration:none;
  color:var(--text);
  background: rgba(15,23,34,.5);
}
.nav-item:hover{border-color:var(--line); background: rgba(20,32,51,.6)}
.nav-item.active{border-color: rgba(125,211,252,.45); background: rgba(20,32,51,.9)}
.nav-icon{width:22px; text-align:center}
.nav-label{font-weight:600; font-size:14px}

.sidebar-footer{margin-top:18px; padding:8px; color:var(--muted); font-size:12px}

.main{flex:1; display:flex; flex-direction:column}
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 24px;
  border-bottom:1px solid var(--line);
  background: rgba(15,23,34,.7);
  position:sticky;
  top:0;
  backdrop-filter: blur(10px);
}
.crumbs{font-weight:700}
.lang a{
  color:var(--muted);
  text-decoration:none;
  font-weight:700;
  padding:6px 10px;
  border-radius:10px;
  border:1px solid transparent;
}
.lang a.on{color:var(--text); border-color: rgba(125,211,252,.35); background: rgba(20,32,51,.7)}
.lang a:hover{border-color:var(--line); color:var(--text)}
.sep{color:var(--muted); margin:0 6px}

.content{
  padding:22px 24px 48px;
  max-width: 980px;
}

.content h1{font-size:28px; margin: 8px 0 14px}
.content h2{margin-top:26px}
.content p{color: #d6e0ee}
.content .muted{color:var(--muted)}
.content .card{
  background: rgba(16,24,36,.75);
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px 16px;
  box-shadow: var(--shadow);
  margin: 14px 0;
}
.content .chip{
  display:inline-block;
  background: rgba(20,32,51,.9);
  border:1px solid var(--line);
  color: var(--text);
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  margin-right:6px;
}
.content ul{line-height:1.7}
.content code{
  background: rgba(20,32,51,.9);
  border:1px solid var(--line);
  padding:2px 6px;
  border-radius:8px;
}

/* KB widgets */
.kb-rows { display: grid; gap: 12px; }
.kb-row { border: 1px solid var(--line); background: rgba(16,24,36,.65); border-radius: 14px; padding: 12px; }
.kb-row-head { display:flex; align-items:flex-start; justify-content:space-between; gap: 12px; }
.kb-row-title { font-weight: 700; }
.kb-row-meta { display:flex; align-items:center; gap: 10px; white-space: nowrap; }
.kb-pct { color: var(--muted); font-weight: 700; }

.kb-badge { font-size: 12px; font-weight: 800; padding: 4px 10px; border-radius: 999px; border:1px solid var(--line); background: rgba(20,32,51,.75); }
.kb-badge.done { border-color: rgba(34,197,94,.35); }
.kb-badge.progress { border-color: rgba(125,211,252,.35); }
.kb-badge.todo { border-color: rgba(148,163,184,.35); }

.kb-bar { height: 10px; border-radius: 999px; background: rgba(20,32,51,.75); border:1px solid var(--line); margin-top: 10px; overflow: hidden; }
.kb-bar-fill { height: 100%; background: rgba(125,211,252,.55); }

.kb-list { line-height: 1.8; padding-left: 1.25rem; }