:root{
  --bg:#0b1020; --card:#121a33; --muted:#a8b3cf; --text:#e9efff; --accent:#4da3ff; --accent2:#7bda6a;
  --radius:14px; --shadow:0 10px 30px rgba(0,0,0,.25);
}
*{box-sizing:border-box}
body{margin:0; font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,"Noto Sans"; background:var(--bg); color:var(--text);}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
code{background:rgba(255,255,255,.08); padding:2px 6px; border-radius:8px}
.topbar{display:flex; justify-content:space-between; align-items:center; padding:16px 20px; border-bottom:1px solid rgba(255,255,255,.08); position:sticky; top:0; background:rgba(11,16,32,.9); backdrop-filter: blur(8px);}
.brand{display:flex; gap:12px; align-items:baseline}
.brand-link{font-weight:700; font-size:18px; color:var(--text)}
.muted{color:var(--muted)}
.nav{display:flex; gap:10px; flex-wrap:wrap}
.nav-item{padding:8px 10px; border-radius:10px; background:rgba(255,255,255,.06); color:var(--text)}
.nav-item:hover{background:rgba(255,255,255,.1); text-decoration:none}
.nav-admin{background:rgba(77,163,255,.18)}
.container{max-width:1100px; margin:0 auto; padding:22px}
h1{margin:0 0 10px}
.grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr)); gap:16px; margin-top:18px}
.card{background:var(--card); border:1px solid rgba(255,255,255,.08); border-radius:var(--radius); box-shadow:var(--shadow); padding:16px}
.card-title{font-weight:700; margin-bottom:8px}
.card-desc{color:var(--muted); margin-bottom:10px}
.card-meta{color:var(--muted); font-size:13px}
.footer{padding:18px 20px; border-top:1px solid rgba(255,255,255,.08); color:var(--muted); text-align:center}