:root{
  --bg:#0f172a;--surface:#111827;--muted:#8b949e;--text:#e5e7eb;--accent:#22c55e;
  --card:#0b1222;--border:#1f2937;--tab:#0b1222;--tab-active:#1f2937
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Ubuntu,"Helvetica Neue","Noto Sans",Arial}
a{color:#93c5fd;text-decoration:none}
a:hover{text-decoration:underline}

.topbar{display:flex;align-items:center;justify-content:space-between;padding:.6rem 1rem;
  border-bottom:1px solid var(--border);background:#0b1222;position:sticky;top:0;z-index:10}
.brand{font-weight:700}
.actions button{margin-left:.5rem}
button{background:#134e4a;border:1px solid #0f766e;color:white;border-radius:.6rem;padding:.45rem .7rem;cursor:pointer}
button:hover{filter:brightness(1.05)}

.tabs{display:flex;gap:.25rem;margin:0 .75rem}
.tabs a{padding:.35rem .6rem;border:1px solid var(--border);border-radius:.5rem;background:var(--tab)}
.tabs a.active{background:var(--tab-active);border-color:#334155}

.banner{background:#1f2937;color:#e5e7eb;border-bottom:1px solid var(--border);padding:.6rem 1rem}

.shell{max-width:1100px;margin:1rem auto;display:grid;grid-template-columns:280px 1fr 300px;gap:1rem;padding:0 1rem}
.col{min-width:0}
.card{background:var(--card);border:1px solid var(--border);border-radius:.75rem;padding:1rem;margin-bottom:1rem}
.row{display:flex;gap:.75rem;align-items:center;margin:.5rem 0}
.row label{min-width:140px;color:#cbd5e1}
.row input,.row select,textarea{flex:1;background:#0f172a;border:1px solid var(--border);border-radius:.5rem;padding:.55rem .65rem;color:var(--text)}
.muted{color:var(--muted)} .small{font-size:.9rem}
.profile{display:flex;align-items:center;gap:1rem}
#avatar{border-radius:50%;border:1px solid var(--border);background:#0f172a;image-rendering:pixelated}

.post{border:1px dashed var(--border);border-radius:.5rem;padding:.6rem .7rem;margin-bottom:.6rem}
.post .meta{color:var(--muted);font-size:.9rem;margin-bottom:.25rem}
.badge{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:.05rem .5rem;font-size:.75rem;margin-left:.5rem}

.advanced summary{cursor:pointer;color:#cbd5e1;margin:.25rem 0}
.links{list-style:none;padding:0;margin:0}
.links li{margin:.25rem 0}

.footer{max-width:1100px;margin:1rem auto 2rem auto;padding:0 1rem;color:#94a3b8}

@media (max-width: 980px){
  .shell{grid-template-columns:1fr;gap:.75rem}
  #left,#right{order:2}
  #feed,#page{order:1}
}