/* Lat Long to Northing Easting — page-specific styles.
   System + datum bar, two side-by-side conversion panels, zone-derivation
   panel, bulk tab, and the scrollable 60-row UTM zone table.
   Mobile-first; uses design-system custom properties. */

/* Sticky jump nav (briefed for this page) */
.jump-nav-section--sticky {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-bg);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

/* System + datum bar */
.sysbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
}

.sysbar .form-group {
  margin-bottom: 0;
  flex: 1 1 150px;
  min-width: 0;
}

.sysbar .form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 0.25rem;
}

.sysbar select {
  width: 100%;
  min-height: 44px;
  font-size: 16px; /* prevents iOS zoom-on-focus */
}

.active-pair {
  flex: 1 1 100%;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
}

/* Two equal-weight conversion panels */
.ne-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .ne-grid {
    flex-direction: row;
    align-items: stretch;
  }
  .ne-grid .ne-panel { flex: 1 1 0; min-width: 0; }
}

.ne-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0.75rem;
  background: var(--color-white);
}

.ne-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.ne-panel-head h3 {
  font-size: 0.95rem;
  margin: 0;
}

.ne-fields {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.ne-fields .form-group {
  margin-bottom: 0.5rem;
  flex: 1 1 8rem;
  min-width: 0;
}

.ne-fields .form-group label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
  display: block;
}

.ne-fields input {
  width: 100%;
  min-height: 44px;
  font-size: 16px;
}

.ne-fields select {
  min-height: 44px;
  font-size: 16px;
}

.ne-fields .hemi-group { flex: 0 0 5rem; }

.zone-fields .form-group { flex: 1 1 5rem; }

.ne-panel .btn-copy {
  min-width: 44px;
  min-height: 44px;
}

.gridref-line {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  margin-top: 0.25rem;
  overflow-x: auto;
  white-space: nowrap;
}

.copy-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}

.copy-options .form-group { margin-bottom: 0; flex: 1 1 150px; }
.copy-options select { width: 100%; min-height: 44px; font-size: 16px; }

.copy-options .checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  min-height: 44px;
  cursor: pointer;
}

/* Error / warning messages */
.conv-msg {
  display: none;
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  font-size: 0.85rem;
}

.conv-msg.visible { display: block; }

.conv-msg--warn {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

/* Zone / band derivation panel */
.deriv-panel {
  margin-top: 0.75rem;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
}

.deriv-panel summary {
  cursor: pointer;
  padding: 0.6rem 0.75rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.deriv-lines {
  padding: 0 0.75rem 0.75rem;
}

.deriv-line {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text);
  padding: 0.35rem 0;
  border-top: 1px solid var(--color-border-light);
  overflow-x: auto;
  white-space: nowrap;
}

.deriv-line:first-child { border-top: none; }

.deriv-line .deriv-result { color: var(--color-primary-dark); font-weight: 700; }

/* Bulk tab */
#bulk-in {
  width: 100%;
  min-height: 14rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 16px;
  resize: vertical;
}

#bulk-in:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(245 73 0 / 0.12);
}

.bulk-mapper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin: 0.75rem 0;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.bulk-mapper .form-group { margin-bottom: 0; flex: 1 1 140px; }
.bulk-mapper select { width: 100%; min-height: 44px; font-size: 16px; }

.bulk-status {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: 0.5rem 0;
}

.bulk-results .table-wrapper {
  max-height: 420px;
  overflow: auto;
}

.bulk-results thead th {
  position: sticky;
  top: 0;
  background: var(--color-white);
  z-index: 2;
  box-shadow: 0 1px 0 var(--color-border);
}

.bulk-results td.bulk-err { color: #b91c1c; }

/* Scrollable UTM zone table */
.zone-scroll {
  max-height: 400px;
  overflow: auto;
}

.zone-scroll thead th {
  position: sticky;
  top: 0;
  background: var(--color-white);
  z-index: 2;
  box-shadow: 0 1px 0 var(--color-border);
}

.zone-scroll tr.zone-hit {
  background: var(--color-orange-100);
}

.table-controls input[type="text"] {
  min-height: 44px;
  font-size: 16px;
  flex: 1 1 220px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
}

.table-controls input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(245 73 0 / 0.12);
}

.zone-filter-note {
  font-size: 0.8rem;
  color: var(--color-text-light);
  align-self: center;
}

/* Mobile: derivation panel is collapsed by JS; keep tap targets comfy */
@media (max-width: 639px) {
  .sysbar .form-group { flex: 1 1 100%; }
}