:root{
  --bg:#f6f8fa;
  --card:#ffffff;
  --accent:#0b5fff;
  --muted:#6b7280;
}
*{box-sizing:border-box}
body{font-family:Inter,ui-sans-serif,system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; background:var(--bg); margin:0; color:#111}
.container{max-width:980px;margin:0 auto;padding:24px}
.site-header{background:linear-gradient(90deg,#071927,#0b3b59);color:#fff;padding:28px 0}
.site-header .logo{height:48px;vertical-align:middle;margin-right:12px}
.site-header h1{display:inline-block;margin:0;font-size:24px}
.lead{opacity:.9}
.card{background:var(--card);padding:18px;border-radius:8px;box-shadow:0 2px 8px rgba(20,20,20,0.06);margin-bottom:18px}
.hidden{display:none}
.auth-buttons button, .toolbar button{background:var(--accent);color:#fff;border:0;padding:10px 14px;border-radius:6px;cursor:pointer}
.toolbar{display:flex;gap:8px;justify-content:flex-end;margin-bottom:8px}
.listing{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.item{border:1px solid #eef2f7;padding:12px;border-radius:6px;background:#fff}
.muted{color:var(--muted);margin-top:12px}
.danger{background:#ef4444}
input[type=email],input[type=password]{width:100%;padding:8px;margin:6px 0;border:1px solid #d1d5db;border-radius:6px}