:root{
  --bg:#000;
  --panel:#000;
  --text:#fff;
  --muted:#d1d5db;
  --primary:#60a5fa;
  --accent:#34d399;
  --outline:#374151;
  --danger:#f87171;
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background:#000;
  color:var(--text);
}

.app-header{
  padding:24px 16px 8px;
  text-align:center;
  position:relative;
}
.app-header .logo-image{
  position:absolute; top:16px; right:16px; height:64px; width:auto; object-fit:contain;
}
.app-header h1{ margin:0 0 6px; font-weight:700; letter-spacing:.2px; }
.subtitle{ margin:0; color:var(--muted); }

.container{ max-width:1200px; margin: 0 auto; padding: 16px; }
.panel{
  background:var(--panel);
  border:1px solid var(--outline);
  border-radius:16px;
  padding:16px;
  margin-bottom:16px;
  box-shadow: 0 10px 20px rgba(0,0,0,.4);
}

.grid{ display:grid; gap:12px; }
.grid-3{ grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4{ grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 1000px) { .grid-4{ grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 680px) { .grid-3{ grid-template-columns: 1fr; } .grid-4{ grid-template-columns: 1fr; } }

.form-group label{ display:block; font-size:14px; margin-bottom:6px; color:#e5e7eb; }
.form-group input{
  width:100%;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--outline);
  background:#0b1220;
  color:var(--text);
}

.button-row{ margin-top:8px; display:flex; gap:8px; flex-wrap:wrap; }

.btn{
  background:#1f2937;
  color:var(--text);
  border:1px solid var(--outline);
  border-radius:12px;
  padding:10px 14px;
  cursor:pointer;
  transition: all .2s ease;
}
.btn:hover{ transform: translateY(-1px); border-color:#546; }
.btn-primary{ background: var(--primary); border-color: transparent; color:#0b1220; font-weight:700; }
.btn-accent{ background: var(--accent); border-color: transparent; color:#053; font-weight:700; }
.btn-secondary{ background:#374151; }
.btn-outline{ background:transparent; border-color:var(--primary); color:#primary; }

.muted{ color:var(--muted); }
.hint{ color:var(--muted); margin:4px 0 10px; }

.table-wrapper{
  overflow:auto; border-radius:12px; border:1px solid var(--outline); background:#0b1220;
}
table{ width:100%; border-collapse:separate; border-spacing:0; }
thead th{
  position:sticky; top:0;
  background:#111827;
  color:#cbd5e1;
  font-weight:600;
  text-align:left;
  padding:10px;
  border-bottom:1px solid var(--outline);
  white-space:nowrap;
}
tbody td{
  padding:8px;
  border-bottom:1px solid rgba(255,255,255,.08);
  vertical-align:top;
  white-space:nowrap;
}

@media print{
  body{ background:white; color:black; }
  .app-header, .panel h2, .button-row, .grid, .uploader, .hint { display:none !important; }
  .panel{ border:none; box-shadow:none; }
  table, th, td{ border:1px solid #000 !important; border-collapse:collapse; }
  thead th{ position:static; background:#fff; color:#000; }
}