:root{
  --bg:#f4f6fb;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#dbe2ef;
  --card:#ffffff;
  --accent:#1e63d6;
  --accent-2:#164aa2;
  --ok:#0f766e;
  --warn:#b45309;
  --bad:#b91c1c;
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);
}

*{box-sizing:border-box}
html,body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial;
}

.container{max-width:1050px;margin:0 auto;padding:18px}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px
}
.brand-title{
  font-weight:800;
  letter-spacing:.2px;
  font-size:18px;
  color:var(--text);
}
.brand-sub{
  font-size:12px;
  color:var(--muted);
  margin-top:2px;
}

.nav{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
.nav a{
  color:var(--text);
  text-decoration:none;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background: #fff;
  transition: all .12s ease;
}
.nav a:hover{border-color:#c8d2e6; transform: translateY(-1px)}
.nav a.active{
  border-color: rgba(30,99,214,.35);
  background: rgba(30,99,214,.06);
  color: var(--accent-2);
}
.nav a.muted{color:var(--muted)}

/* Cards / Layout */
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  box-shadow: var(--shadow);
}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:900px){.grid.cols2{grid-template-columns:1fr 1fr}}

h1,h2,h3{margin:0 0 10px}
p{color:var(--muted);line-height:1.55;margin:0 0 10px}

/* Forms */
label{display:block;margin:0 0 6px;color:var(--muted);font-size:14px}
.input{
  width:100%;
  padding:11px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  outline:none;
}
.input:focus{
  border-color: rgba(30,99,214,.55);
  box-shadow: 0 0 0 4px rgba(30,99,214,.10);
}
.row{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:650px){.row.cols2{grid-template-columns:1fr 1fr}}
textarea.input{min-height:120px}

/* Buttons */
.btn{
  display:inline-block;
  padding:10px 14px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  text-decoration:none;
  cursor:pointer;
  transition: all .12s ease;
}
.btn:hover{transform: translateY(-1px); border-color:#c8d2e6}
.btn.primary{
  border-color: rgba(30,99,214,.45);
  background: rgba(30,99,214,.10);
  color: var(--accent-2);
}
.btn.primary:hover{
  background: rgba(30,99,214,.14);
  border-color: rgba(30,99,214,.55);
}
.btn.danger{
  border-color: rgba(185,28,28,.35);
  background: rgba(185,28,28,.06);
  color: var(--bad);
}
.btn.danger:hover{
  background: rgba(185,28,28,.10);
  border-color: rgba(185,28,28,.45);
}

.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}

/* Alerts */
.alert{
  margin:0 0 14px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: rgba(15,118,110,.08);
  color: var(--text);
}
.alert.error{
  background: rgba(185,28,28,.08);
  border-color: rgba(185,28,28,.22);
}
.alert.warn{
  background: rgba(180,83,9,.08);
  border-color: rgba(180,83,9,.22);
}

/* Tables */
.table{width:100%;border-collapse:collapse;margin-top:10px}
.table th,.table td{
  padding:10px 10px;
  border-bottom:1px solid var(--border);
  vertical-align:top
}
.table th{
  color:var(--muted);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.06em;
  text-align:left
}

/* Badges */
.badge{
  display:inline-block;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--border);
  color:var(--muted);
  font-size:12px;
  background:#fff;
}
.badge.ok{border-color: rgba(15,118,110,.35); color: var(--ok); background: rgba(15,118,110,.06)}
.badge.bad{border-color: rgba(185,28,28,.35); color: var(--bad); background: rgba(185,28,28,.06)}

.footer{padding:18px 0;color:var(--muted)}
.small{font-size:13px;color:var(--muted)}