:root{
  --bg:#0b0c10;
  --fg:#f2f3f5;
  --muted:#a8acb3;
  --card:#12141b;
  --line:#222634;
  --pill:#1f2433;
  --radius:16px;
  --pad:18px;
  --max:1100px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:inherit;text-decoration:none}
code{color:var(--fg);background:rgba(255,255,255,.06);padding:.15rem .35rem;border-radius:8px}

.topbar{
  position:sticky; top:0; z-index:5;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 18px; border-bottom:1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(11,12,16,.75);
}
.brand{display:flex; flex-direction:column; gap:2px}
.logo{font-weight:800; letter-spacing:.08em}
.sub{color:var(--muted); font-size:.9rem}
.nav{display:flex; gap:14px; color:var(--muted)}
.nav a:hover{color:var(--fg)}

.wrap{max-width:var(--max); margin:0 auto; padding:20px}
.hero{padding:14px 0 8px}
.hero h1{margin:0 0 6px; font-size:1.8rem}
.hero p{margin:0; color:var(--muted)}

.toolbar{
  display:flex; gap:10px; flex-wrap:wrap;
  padding:14px 0 18px;
}
.input,.select{
  background:var(--card);
  border:1px solid var(--line);
  color:var(--fg);
  border-radius:12px;
  padding:12px 12px;
  outline:none;
}
.input{flex:1; min-width:240px}
.select{min-width:190px}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:14px;
}

.tile{
  grid-column: span 6;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:var(--pad);
  box-shadow: var(--shadow);
  transition: transform .12s ease, border-color .12s ease;
}
.tile:hover{transform: translateY(-2px); border-color: rgba(255,255,255,.18)}
@media (max-width: 900px){ .tile{grid-column: span 12;} }

.meta{display:flex; align-items:center; gap:10px; margin-bottom:10px}
.pill{
  background:var(--pill);
  border:1px solid rgba(255,255,255,.08);
  padding:6px 10px;
  border-radius:999px;
  font-size:.85rem;
  color:var(--fg);
}
.topics{color:var(--muted); font-size:.9rem; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}

.title{margin:0 0 8px; font-size:1.15rem; line-height:1.25}
.excerpt{margin:0 0 10px; color:var(--muted); line-height:1.5}
.tags{color:rgba(255,255,255,.45); font-size:.85rem}

.empty{color:var(--muted); padding:20px 0}
.error{background:rgba(255,255,255,.06); border:1px solid var(--line); padding:14px; border-radius:12px; color:var(--muted)}

.footer{
  max-width:var(--max);
  margin:0 auto;
  padding:18px 20px 30px;
  border-top:1px solid var(--line);
  color:var(--muted);
  display:flex; gap:10px; flex-wrap:wrap;
}
.dot{opacity:.5}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--fg)}