/* app/assets/app.css */
:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --card:#ffffff;
  --shadow:0 6px 18px rgba(0,0,0,.06);
  --primary:#2563eb;
  --primary-weak:#eff6ff;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial}
body{background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:16px}

.topbar{
  position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border);
}
.topbar-inner{display:flex;align-items:center;gap:12px;justify-content:space-between;padding:12px 16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.badge{font-size:12px;color:var(--muted);border:1px solid var(--border);padding:4px 8px;border-radius:999px}

.shell{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 54px)}
.sidebar{
  border-right:1px solid var(--border);
  padding:14px;
  position:sticky; top:54px; height:calc(100vh - 54px);
  overflow:auto;
}
.nav a{
  display:flex;gap:10px;align-items:center;
  padding:10px 10px;border-radius:10px;color:var(--text)
}
.nav a.active{background:var(--primary-weak);border:1px solid #dbeafe}
.nav a:hover{background:#f9fafb}
.nav small{color:var(--muted)}
.main{padding:16px}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:14px;
}
.grid{display:grid;gap:12px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width: 980px){
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .shell{grid-template-columns:1fr}
  .sidebar{display:none;position:fixed;left:0;top:54px;background:#fff;width:280px;z-index:60}
  .sidebar.open{display:block}
}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border);background:#fff;
  padding:10px 12px;border-radius:12px;cursor:pointer;
}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn:active{transform:translateY(1px)}
.input, select{
  width:100%;
  border:1px solid var(--border);
  border-radius:12px;
  padding:10px 12px;
  outline:none;
}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width: 720px){ .row{grid-template-columns:1fr} }

.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px}
table{width:100%;border-collapse:collapse;min-width:680px;background:#fff}
th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}
th{background:#f9fafb;color:#374151;font-weight:700}

.tabs{display:flex;gap:10px;flex-wrap:wrap}
.tab{
  display:flex;align-items:center;gap:8px;
  padding:10px 12px;border-radius:12px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
}
.tab.on{border-color:#bfdbfe;background:#eff6ff}
.muted{color:var(--muted)}
.h1{font-size:22px;margin:0 0 10px 0}
.h2{font-size:16px;margin:0 0 10px 0;color:#111827}
hr{border:none;border-top:1px solid var(--border);margin:14px 0}