:root{
  --max-width:980px;
  --muted:#6b7280;
  --accent:#0b74de;
  --card-bg:#ffffff;
  --page-bg:#f6f7fb;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--page-bg);
  color:#0b1220;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.35;
}
.container{
  max-width:var(--max-width);
  margin:20px auto;
  padding:18px;
}
.header h1{
  margin:0 0 6px 0;
  font-size:1.6rem;
}
.brief{margin:6px 0 12px 0;color:var(--muted)}
.how-it-works{margin:8px 0 14px 0;color:var(--muted)}
.nisab-block{
  text-align:center;
  padding:18px 12px 14px 12px;
  margin:10px 0 20px 0;
}
.nisab-meta{display:flex;gap:8px;justify-content:center;align-items:center;margin-bottom:8px}
.nisab-meta .small-btn {padding:8px;border-radius:8px;border:1px solid #e6e9ef;background:white}
.nisab-label{font-weight:700;margin-bottom:6px; font-size:1rem}
.nisab-amount{
  font-size:48px;
  font-weight:800;
  color:#111827;
  text-shadow:0 8px 20px rgba(0,0,0,0.12);
  margin:6px 0;
  line-height:1;
}
.nisab-desc{color:var(--muted); max-width:900px; margin:8px auto 0 auto; font-size:0.95rem}
.header-actions{display:flex;gap:8px;justify-content:center;align-items:center;margin-top:10px}
.file-label{display:inline-block;padding:8px 12px;border-radius:8px;border:1px solid #e6e9ef;background:white;cursor:pointer}
.card{
  background:var(--card-bg);
  border-radius:var(--radius);
  padding:14px;
  margin:12px 0;
  box-shadow:0 1px 3px rgba(12,22,34,0.06);
}
.card-header h3{margin:0 0 6px 0}
.muted{color:var(--muted)}
.small{font-size:0.85rem}
.row-actions{display:flex;gap:10px;margin:10px 0}
.row-actions button, .small-btn {padding:8px 12px;border-radius:8px;border:1px solid #e6e9ef;background:white;cursor:pointer}
.row-actions button:hover, .small-btn:hover{box-shadow:0 1px 6px rgba(12,22,34,0.06)}
.summary{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:8px}
.summary div{font-weight:700}
.total-card{text-align:center;background:linear-gradient(180deg,#0b74de15 0,#0b74de05);border:1px solid rgba(11,116,222,0.08)}
.total-amount{font-size:28px;font-weight:800;margin-top:8px}
.mode-selection{margin:8px 0}
.mode-buttons{display:flex;gap:8px;align-items:center}
.mode-btn{padding:10px 14px;border-radius:8px;border:1px solid #e6e9ef;background:white;cursor:pointer}
.mode-btn.active{background:var(--accent);color:white;border-color:transparent}
.center{text-align:center}
.haul-output{font-weight:700;margin-top:10px}
.hidden{display:none}

/* inputs */
input[type="text"], input[type="month"], input[type="date"], .gram-input, .money, select {
  padding:8px 10px;
  border-radius:8px;
  border:1px solid #e6e9ef;
  width:100%;
  max-width:320px;
  margin-top:6px;
  font-size:1rem;
  background:white;
}
label{display:block;margin-top:8px;font-weight:600}
.account-row{display:flex;flex-wrap:wrap;gap:10px;align-items:end;margin:8px 0;padding:10px;border-radius:8px;background:#fbfdff}
.account-row .field{flex:1;min-width:140px}
.account-row .field.small{flex:0 0 140px}
.account-row .net-amount{font-weight:700}
.account-row .remove-btn{background:transparent;border:none;color:#ef4444;cursor:pointer;font-weight:700}

.subsection{margin-top:12px}
hr{border:none;border-top:1px dashed #e6e9ef;margin:12px 0}

/* monthly table */
#monthly-breakdown-table-wrap{overflow:auto}
.month-table{width:100%;border-collapse:collapse;margin-top:8px}
.month-table th, .month-table td{border:1px solid #eef2f7;padding:8px;text-align:right}
.month-table th{background:#fbfdff;text-align:left;font-weight:700}
.month-table td input{width:100%;border:none;background:transparent;text-align:right;padding:4px}

/* business grid */
.business-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.biz-card{background:white;padding:12px;border-radius:8px;min-height:120px}
.placeholder{color:var(--muted);font-size:14px}

/* responsive */
@media (max-width:780px){
  .account-row{flex-direction:column;align-items:stretch}
  .business-grid{grid-template-columns:1fr; }
  .nisab-amount{font-size:36px}
  .nisab-meta{flex-direction:column}
}