/* ==========================================================================
   generator.css — Layout for QR & barcode generator tools.
   Left: inputs + design options. Right: sticky live preview.
   ========================================================================== */

.generator { display: grid; grid-template-columns: 1fr 400px; gap: 24px; align-items: start; margin-top: 8px; }
.generator .panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 20px;
}

/* ----- Inputs ----- */
.field { margin-bottom: 16px; }
.field > label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.field .req { color: var(--error); }
.field .hint { font-size: .8rem; color: var(--muted); margin-top: 4px; display: block; }
.field input[type="text"], .field input[type="url"], .field input[type="email"],
.field input[type="tel"], .field input[type="number"], .field input[type="password"],
.field input[type="datetime-local"], .field input[type="date"], .field input[type="time"],
.field select, .field textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text); font-family: inherit; font-size: .95rem;
}
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); background: var(--surface); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--error); }
.field .error-msg { color: var(--error); font-size: .82rem; margin-top: 5px; display: none; }
.field .error-msg::before { content: "⚠ "; }
.field.has-error .error-msg { display: block; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.input-with-btn { display: flex; gap: 8px; }
.input-with-btn > :first-child { flex: 1; }

.checkbox { display: flex; align-items: center; gap: 8px; margin: 8px 0; }
.checkbox input { width: 18px; height: 18px; }
.checkbox label { font-weight: 500; font-size: .92rem; }

fieldset { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; margin: 0 0 16px; }
legend { font-weight: 700; font-size: .85rem; padding: 0 6px; }

/* Collapsible design options */
.options details { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-top: 10px; }
.options summary { cursor: pointer; font-weight: 700; padding: 12px 14px; font-size: .92rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.options summary::after { content: "▾"; color: var(--muted); }
.options details[open] summary::after { content: "▴"; }
.options .options-body { padding: 4px 14px 14px; }

/* Color inputs */
.color-field { display: flex; align-items: center; gap: 8px; }
.color-field input[type="color"] { width: 44px; height: 40px; padding: 2px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); cursor: pointer; }
.color-field input[type="text"] { width: 110px; font-family: var(--mono); text-transform: uppercase; }

/* Range */
.range-field input[type="range"] { width: 100%; }
.range-field .val { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--primary); }

.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.segmented button { border: 0; background: var(--surface-2); color: var(--text); padding: 8px 12px; cursor: pointer; font-weight: 600; font-size: .85rem; }
.segmented button[aria-pressed="true"] { background: var(--primary); color: var(--primary-contrast); }

/* ----- Preview ----- */
.preview-panel { position: sticky; top: 84px; }
.preview-stage {
  display: grid; place-items: center; padding: 20px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border); min-height: 300px;
}
.preview-stage canvas, .preview-stage svg, .preview-stage img { max-width: 100%; height: auto; border-radius: 6px; }
.qr-preview-wrap { background: #fff; padding: 12px; border-radius: 8px; box-shadow: var(--shadow-sm); }
.qr-preview-wrap canvas { display: block; width: 256px; height: 256px; }
.barcode-preview-wrap { background: #fff; padding: 12px; border-radius: 8px; width: 100%; overflow-x: auto; }
.barcode-preview-wrap svg { display: block; margin: 0 auto; max-width: 100%; }

.preview-empty { color: var(--muted); text-align: center; font-size: .9rem; }

.verify-status { margin-top: 14px; font-size: .88rem; }
.verify-status .vline { display: flex; align-items: center; gap: 8px; padding: 3px 0; }
.verify-status .vline svg { width: 15px; height: 15px; flex: none; }
.v-ok { color: var(--success); }
.v-warn { color: var(--warning); }
.v-err { color: var(--error); }

.encoded-box { margin-top: 12px; }
.encoded-box textarea { width: 100%; min-height: 72px; font-family: var(--mono); font-size: .8rem; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; resize: vertical; }

.actions { margin-top: 16px; }
.actions .btn-row + .btn-row { margin-top: 10px; }

.checkdigit-result { margin-top: 12px; font-size: .88rem; }
.checkdigit-result table { width: 100%; border-collapse: collapse; }
.checkdigit-result td { padding: 4px 6px; border-bottom: 1px solid var(--border); }
.checkdigit-result td:first-child { color: var(--muted); }
.checkdigit-result td:last-child { text-align: right; font-family: var(--mono); font-weight: 700; }

/* Live region announcements */
.sr-live { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

@media (max-width: 860px) {
  .generator { grid-template-columns: 1fr; }
  .preview-panel { position: static; order: -1; }
  .qr-preview-wrap canvas { width: 220px; height: 220px; }
  .field-row { grid-template-columns: 1fr; }
}