/* Generator pages: form left, PDF-faithful preview right. Mobile: tabs. */

.gen-shell {
  display: grid;
  grid-template-columns: minmax(420px, 520px) 1fr;
  gap: 28px;
  align-items: start;
  max-width: 1380px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.gen-h1 { font-size: clamp(26px, 3vw, 34px); margin: 18px 0 4px; }
.gen-sub { color: var(--muted); margin-bottom: 18px; font-size: 15px; }

/* ---------- form panel ---------- */
.gen-form { min-width: 0; }

.card {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.card > h3 {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card > h3::after { content: ""; flex: 1; border-top: 1px solid var(--hairline); }
.card .row { display: grid; gap: 12px; margin-bottom: 12px; }
.card .row:last-child { margin-bottom: 0; }
.row.c2 { grid-template-columns: 1fr 1fr; }
.row.c3 { grid-template-columns: 1fr 1fr 1fr; }
.row.c21 { grid-template-columns: 2fr 1fr; }
@media (max-width: 520px) { .row.c2, .row.c3, .row.c21 { grid-template-columns: 1fr; } }

.inline-actions { display: flex; gap: 8px; align-items: end; }
.inline-actions > :first-child { flex: 1; }

/* ---------- items table ---------- */
.items-head, .item-row {
  display: grid;
  grid-template-columns: 18px minmax(120px, 1fr) 52px 68px 46px 46px 64px 22px 22px;
  gap: 5px;
  align-items: start;
}
.items-head {
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); padding: 0 0 6px;
}
.items-head span:nth-child(n+3) { text-align: right; }
.item-row { margin-bottom: 8px; }
.item-row textarea { overflow: hidden; min-height: 38px; }
.i-desc-wrap { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.item-row .i-hsn { display: none; text-align: left; font-size: 12px; padding: 6px 8px; }
body.show-hsn .item-row .i-hsn { display: block; }
.item-row input { text-align: right; padding: 9px 8px; }
.item-row .i-amount {
  font: 600 13.5px var(--sans);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  text-align: right;
  padding: 11px 2px 0 0;
  white-space: nowrap;
  overflow: hidden;
}
.item-row .drag, .item-row .i-del, .item-row .i-save {
  background: none; border: 0; cursor: pointer; color: var(--muted);
  font-size: 15px; padding: 9px 0 0; line-height: 1;
}
.item-row .drag { cursor: grab; font-size: 13px; letter-spacing: -2px; }
.item-row .i-del:hover { color: var(--danger); }
.item-row .i-save:hover { color: var(--gold); }
.item-row.dragging { opacity: 0.45; }

/* hide per-line tax/discount columns unless enabled */
body:not(.lines-disc) .i-disc, body:not(.lines-disc) .col-disc { display: none; }
body:not(.lines-tax) .i-tax, body:not(.lines-tax) .col-tax { display: none; }
body:not(.lines-disc) .items-head, body:not(.lines-disc) .item-row { grid-template-columns: 18px minmax(120px, 1fr) 52px 68px 0 46px 64px 22px 22px; }
body:not(.lines-tax) .items-head, body:not(.lines-tax) .item-row { grid-template-columns: 18px minmax(120px, 1fr) 52px 68px 46px 0 64px 22px 22px; }
body:not(.lines-disc):not(.lines-tax) .items-head, body:not(.lines-disc):not(.lines-tax) .item-row { grid-template-columns: 18px minmax(140px, 1fr) 56px 76px 0 0 72px 22px 22px; }

.items-foot { display: flex; gap: 10px; margin-top: 10px; align-items: center; flex-wrap: wrap; }
.items-foot select { width: auto; flex: 1; min-width: 180px; }

/* ---------- preview panel ---------- */
.gen-preview { position: sticky; top: 76px; min-width: 0; }
.gen-toolbar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-bottom: 12px;
}
#totals-strip {
  display: flex; gap: 18px; flex-wrap: wrap;
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}
#totals-strip span { display: flex; flex-direction: column; line-height: 1.25; }
#totals-strip small { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); }
#totals-strip strong { font-size: 14.5px; color: var(--ink); }

#preview {
  background: var(--ivory-2);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 22px;
  overflow: auto;
  max-height: calc(100vh - 170px);
}

.pv-page {
  position: relative;
  background: #fff;
  box-shadow: 0 1px 3px rgba(17, 35, 63, 0.12), 0 10px 30px rgba(17, 35, 63, 0.10);
  overflow: hidden;
  flex-shrink: 0;
}
.pv-abs { position: absolute; }
.pv-text { line-height: 1; white-space: pre; }

/* ---------- mobile tabs ---------- */
.gen-tabs { display: none; }
@media (max-width: 980px) {
  .gen-shell { grid-template-columns: 1fr; }
  .gen-preview { position: static; }
  .gen-tabs {
    display: flex; gap: 0; position: sticky; top: 60px; z-index: 40;
    background: var(--ivory); border-bottom: 1px solid var(--hairline);
    margin: 0 -20px 14px; padding: 0 20px;
  }
  .gen-tab {
    flex: 1; background: none; border: 0; border-bottom: 2px solid transparent;
    font: 600 14px var(--sans); color: var(--muted); padding: 12px; cursor: pointer;
  }
  .gen-tab.active { color: var(--emerald); border-bottom-color: var(--emerald); }
  body:not(.show-preview) .gen-preview { display: none; }
  body.show-preview .gen-form { display: none; }
  #preview { max-height: none; }
}

/* ---------- signature modal ---------- */
dialog#sig-modal {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  width: min(94vw, 560px);
}
dialog#sig-modal::backdrop { background: rgba(17, 35, 63, 0.45); }
#sig-canvas {
  width: 100%; height: 180px;
  border: 1px dashed var(--hairline);
  border-radius: 8px;
  background: #fff;
  touch-action: none;
  cursor: crosshair;
}
.sig-actions { display: flex; gap: 10px; margin-top: 12px; justify-content: flex-end; }