*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial, sans-serif;
  background:#f3f6fb;
  color:#1f2937;
}
a{text-decoration:none;color:#1d4ed8}
.container{max-width:1200px;margin:0 auto;padding:16px}
.topbar{
  background:linear-gradient(135deg,#0f172a,#2563eb);
  color:#fff;
  padding:18px;
  border-radius:18px;
  margin-bottom:18px;
}
.nav{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:12px;
}
.nav a{
  color:#fff;
  padding:8px 12px;
  border:1px solid rgba(255,255,255,.25);
  border-radius:999px;
}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.col-3{grid-column:span 3}.col-4{grid-column:span 4}.col-6{grid-column:span 6}.col-8{grid-column:span 8}.col-12{grid-column:span 12}
.card{
  background:#fff;
  border-radius:18px;
  padding:18px;
  box-shadow:0 8px 24px rgba(0,0,0,.08);
}
.stat h3{margin:0 0 8px;font-size:14px;color:#64748b}
.stat h1{margin:0;font-size:32px}
label{font-weight:700;font-size:14px}
input,select,textarea,button{
  width:100%;
  padding:12px 14px;
  border:1px solid #d5dbe5;
  border-radius:12px;
  font-size:14px;
  margin-top:6px;
}
textarea{min-height:140px;resize:vertical}
button{
  background:#2563eb;
  color:#fff;
  border:none;
  font-weight:700;
  cursor:pointer;
}
button:hover{opacity:.96}
.btn-danger{background:#dc2626}
.btn-secondary{background:#475569}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.actions a, .actions button{width:auto;padding:10px 14px;border-radius:10px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:12px;border-bottom:1px solid #e5e7eb;text-align:left;white-space:nowrap}
.badge{display:inline-block;padding:5px 10px;border-radius:999px;font-size:12px}
.badge-ok{background:#dcfce7;color:#166534}
.badge-no{background:#fee2e2;color:#991b1b}
.msg{padding:12px 14px;border-radius:12px;margin-bottom:14px}
.success{background:#dcfce7;color:#166534}
.error{background:#fee2e2;color:#991b1b}
.info{background:#dbeafe;color:#1d4ed8}
.preview{background:#eff6ff;border:1px dashed #93c5fd;padding:12px;border-radius:12px}
.login-box{max-width:420px;margin:60px auto}
.small{font-size:12px;color:#64748b}
@media (max-width:900px){
  .col-3,.col-4,.col-6,.col-8,.col-12{grid-column:span 12}
}