:root{
  --bg:#ffffff;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --brand:#1dcf9f;             /* primary accent */
  --brand-ink:#0b8f6e;
  --danger:#e11d48;
  --ring:rgba(29,207,159,.35);
  --shadow:0 10px 30px rgba(0,0,0,.08);
  --radius:18px;
  --radius-sm:12px;
}

.utm-wrap{max-width:1000px;margin:auto;padding:18px}
*{box-sizing:border-box;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
h2,h3{margin:0 0 10px;color:var(--text)}
p{color:var(--text)}
.sep{border:none;border-top:1px solid #e5e7eb;margin:14px 0}

.utm-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.utm-actions{display:flex;gap:8px}

.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin:12px 0}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}

.table-wrap{overflow:auto;border-radius:var(--radius-sm);border:1px solid #e5e7eb}
.tbl{width:100%;border-collapse:separate;border-spacing:0;min-width:680px}
.tbl thead th{background:#f9fafb;text-align:left;padding:10px;font-weight:600;color:var(--muted);position:sticky;top:0}
.tbl td{padding:8px;border-top:1px solid #f1f5f9}
.tbl input,.tbl select{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:10px;outline:none}
.tbl input:focus,.tbl select:focus{border-color:var(--brand);box-shadow:0 0 0 4px var(--ring)}
.tbl .row-actions{display:flex;gap:6px}

.field{display:flex;flex-direction:column;gap:6px}
.field input{padding:10px;border:1px solid #d1d5db;border-radius:12px;outline:none}
.field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px var(--ring)}
.grid{display:grid;gap:12px}
.grid.sm2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.sm3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:720px){
  .grid.sm2,.grid.sm3{grid-template-columns:1fr}
  .tbl{min-width:100%}
}

.btn{padding:10px 14px;border-radius:12px;border:none;background:var(--brand);color:#fff;cursor:pointer;font-weight:600}
.btn:hover{background:var(--brand-ink)}
.btn.ghost{background:#eefcf8;color:var(--brand-ink)}
.btn.ghost:hover{background:#dcfbf3}
.btn.danger{background:var(--danger)}
.i-btn{border:none;background:#eef2ff;color:#3730a3;border-radius:10px;padding:6px 10px;cursor:pointer;font-weight:700}

.row-actions{display:flex;gap:8px;margin-top:10px}
.downloads{display:flex;gap:8px;flex-wrap:wrap}

.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca;padding:10px;border-radius:12px}
.results .stat{background:#f9fafb;border-radius:14px;padding:14px}
.results .stat-label{color:var(--muted);font-size:.9rem}
.results .stat-value{font-size:1.6rem;font-weight:800;color:var(--text)}
.conv{background:#f9fafb;border-radius:14px;padding:14px}
.conv-label{color:var(--muted);font-size:.9rem}
.conv-value{font-weight:800;color:var(--text)}

.tips{background:#f8fafc;border:1px solid #e5e7eb;border-radius:16px;padding:12px;margin:8px 0;display:grid;gap:10px}
.tip{background:#fff;border:1px dashed #d1d5db;border-radius:12px;padding:10px}
.tip-inline{background:#f9fafb;border-left:4px solid var(--brand);border-radius:10px;padding:10px;margin:8px 0;color:#0f172a}

/* Dark mode */
.dark{
  --bg:#0b0f14;
  --card:#0f1720;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --ring:rgba(29,207,159,.25);
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --brand:#1dcf9f;
  --brand-ink:#16a57f;
  --danger:#fb7185;
}
.dark body,.dark .utm-wrap{background:var(--bg)}
.dark .tbl thead th{background:#0b1220}
.dark .results .stat,.dark .conv,.dark .tbl td{background:#0b1220;border-color:#0b1220}
.dark .table-wrap{border-color:#0b1220}