/* QrNex tool UI: generator (types, form, design panels, sticky preview), bulk ZIP maker, scanner. */
.tn-tool.qn-host { background: none; border: 0; box-shadow: none; overflow: visible; }
.qn-hero { padding-bottom: 18px; }
.qn-hero h1 { margin-bottom: 8px; }
.qn-home-gen { margin-top: 4px; margin-bottom: 26px; }
.qn-home-search { margin: 6px 0 22px; max-width: 640px; }

/* ---------- generator layout */
.qn-gen { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.qn-left { min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.qn-right { min-width: 0; position: sticky; top: calc(var(--header-h) + 12px); }
.qn-right.drag .qn-sticky { outline: 3px dashed var(--primary); outline-offset: 4px; }
.qn-step { padding: 16px 18px 18px; }
.qn-step-h { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; font-size: 17px; flex-wrap: wrap; }
.qn-step-h .btn { margin-left: auto; }
.qn-step-h .btn + .btn { margin-left: 0; }
.qn-num { width: 26px; height: 26px; border-radius: 50%; background: var(--grad); color: #fff; display: inline-grid; place-items: center; font-size: 13px; font-weight: 800; flex: none; }
.qn-step-t { font-weight: 700; }

/* type tabs */
.qn-types { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; }
.qn-types button { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px 4px 8px; border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--elev); color: var(--text-2); cursor: pointer; font-size: 12.5px; font-weight: 600; transition: border-color .15s, background .15s, transform .15s; }
.qn-types button .ico { width: 20px; height: 20px; }
.qn-types button:hover { border-color: var(--primary); color: var(--primary); }
.qn-types button.on { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: var(--shadow-glow); }
:root[data-theme="dark"] .qn-types button.on { color: #111827; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .qn-types button.on { color: #111827; } }

/* content form */
.qn-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.qn-fields .qn-full { grid-column: 1 / -1; }
.qn-fields .textarea { min-height: 0; resize: vertical; }
.qn-pw { display: flex; gap: 6px; }
.qn-pw .input { flex: 1; }
.qn-problems { margin-top: 12px; padding: 10px 12px; border-radius: var(--r-md); background: var(--danger-bg); color: var(--danger); font-size: 13.5px; display: grid; gap: 4px; }
.qn-problems.soft { background: var(--surface-2); color: var(--muted); }
.qn-problems div { display: flex; gap: 8px; align-items: center; }

/* design */
.qn-presets { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 10px; margin-bottom: 4px; scrollbar-width: thin; }
.qn-preset { flex: none; display: flex; flex-direction: column; align-items: center; gap: 4px; width: 84px; padding: 8px 4px 6px; border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--elev); cursor: pointer; font-size: 11.5px; color: var(--text-2); position: relative; }
.qn-preset svg { width: 44px; height: 44px; border-radius: 6px; }
.qn-preset span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.qn-preset.on, .qn-preset:hover { border-color: var(--primary); }
.qn-preset.on { box-shadow: 0 0 0 2px var(--primary-100); }
.qn-preset i { position: absolute; top: 2px; right: 4px; font-style: normal; font-size: 15px; line-height: 1; color: var(--muted); padding: 2px 4px; border-radius: 4px; }
.qn-preset i:hover { background: var(--danger-bg); color: var(--danger); }
.qn-sec { border-top: 1px solid var(--line); }
.qn-sec summary { display: flex; align-items: center; gap: 10px; padding: 12px 2px; cursor: pointer; list-style: none; font-size: 14.5px; }
.qn-sec summary::-webkit-details-marker { display: none; }
.qn-sec summary > .ico:last-child { margin-left: 0; transition: transform .2s; color: var(--muted); }
.qn-sec[open] summary > .ico:last-child { transform: rotate(180deg); }
.qn-sec-sum { margin-left: auto; color: var(--muted); font-size: 12.5px; display: inline-flex; gap: 4px; align-items: center; }
.qn-sec-sum i { width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--line-2); display: inline-block; }
.qn-sec-body { padding: 2px 2px 16px; display: grid; gap: 12px; }
.qn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; align-items: end; }
.qn-row-mid { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; }
.qn-color { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--text-2); }
.qn-cin { display: flex; align-items: center; gap: 6px; }
.qn-cin input[type=color] { width: 42px; height: 42px; padding: 2px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--elev); cursor: pointer; flex: none; }
.qn-cin .qn-hex { font-family: var(--font-mono); text-transform: uppercase; }
.qn-range { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--text-2); min-width: 220px; flex: 1; }
.qn-range input { width: 100%; accent-color: var(--primary); }
.qn-swatches { display: flex; flex-wrap: wrap; gap: 6px; }
.qn-swatches button { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--elev); background: var(--c); box-shadow: 0 0 0 1px var(--line-2); cursor: pointer; }
.qn-swatches button:hover { transform: scale(1.12); }
.qn-shapes, .qn-frames, .qn-logos { display: flex; flex-wrap: wrap; gap: 8px; }
.qn-shapes button { width: 56px; height: 56px; padding: 5px; border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; cursor: pointer; display: grid; place-items: center; }
.qn-shapes button svg { width: 44px; height: 44px; }
.qn-shapes button.on, .qn-frames button.on, .qn-logos > *.on { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-100); }
.qn-shapes button:hover, .qn-frames button:hover, .qn-logos > *:hover { border-color: var(--primary); }
.qn-frames button { width: 92px; padding: 8px 4px 6px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--elev); cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 11px; color: var(--text-2); }
.qn-frames button svg { height: 58px; width: auto; max-width: 70px; background: #fff; border-radius: 4px; }
.qn-frames button span { line-height: 1.2; text-align: center; }
.qn-logos > * { width: 56px; height: 56px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--elev) center / 70% no-repeat; cursor: pointer; display: grid; place-items: center; padding: 6px; position: relative; }
.qn-logos img { width: 38px; height: 38px; }
.qn-logos .qn-logo-none, .qn-logos .qn-logo-up { font-size: 10.5px; color: var(--muted); align-content: center; gap: 2px; }
.qn-logos .qn-logo-up.on > * { opacity: 0; }
.qn-chips { display: flex; flex-wrap: wrap; gap: 6px; align-self: end; }
.qn-chips .chip { padding: 4px 10px; font-size: 12px; }
.qn-mystyles { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-top: 10px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

/* preview column */
.qn-sticky { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.qn-preview { background: repeating-conic-gradient(var(--surface-2) 0 25%, var(--elev) 0 50%) 0 0 / 18px 18px; border-radius: var(--r-md); border: 1px solid var(--line);
  min-height: 240px; display: grid; place-items: center; padding: 14px; transition: opacity .2s; }
.qn-preview svg { width: 100%; height: auto; max-height: 420px; display: block; filter: drop-shadow(0 4px 14px rgba(15, 23, 42, .12)); }
.qn-preview.stale svg { opacity: .25; filter: grayscale(1); }
.qn-ph { text-align: center; font-size: 13.5px; padding: 40px 10px; }
.qn-check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; padding: 8px 10px; border-radius: var(--r-md); background: var(--surface-2); color: var(--muted); }
.qn-dot { width: 10px; height: 10px; border-radius: 50%; background: currentColor; flex: none; }
.qn-check[data-state="ok"] { background: var(--success-bg); color: var(--success); }
.qn-check[data-state="bad"] { background: var(--danger-bg); color: var(--danger); }
.qn-check[data-state="busy"] .qn-dot { animation: qn-pulse .8s infinite alternate; }
@keyframes qn-pulse { to { opacity: .2; } }
.qn-meta { line-height: 1.4; }
.qn-warn { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.qn-warn:empty { display: none; }
.qn-warn li { display: flex; gap: 6px; align-items: flex-start; line-height: 1.4; padding: 6px 8px; border-radius: 8px; }
.qn-warn li.warn { background: var(--warning-bg); color: var(--warning); }
.qn-warn li.info { background: var(--accent-50); color: var(--accent); }
.qn-warn li .ico { flex: none; margin-top: 1px; }
.qn-size .select { min-height: 38px; padding: 6px 10px; }
.qn-dl { min-height: 46px; font-size: 15px; }
.qn-dl-more { display: grid; grid-template-columns: repeat(auto-fit, minmax(60px, 1fr)); gap: 6px; }
.qn-raw summary { cursor: pointer; color: var(--muted); }
.qn-raw pre { white-space: pre-wrap; word-break: break-all; background: var(--code-bg); padding: 8px 10px; border-radius: 8px; max-height: 180px; overflow: auto; margin: 6px 0 0; font-size: 12px; }

/* ---------- bulk */
.qn-bulk, .qn-scan { display: flex; flex-direction: column; gap: 14px; }
.qn-list { min-height: 180px; font-size: 13px; }
.qn-bulk-opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px 16px; margin-top: 14px; }
.qn-seg { flex-wrap: wrap; }
.qn-bgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; margin-bottom: 14px; }
.qn-bitem { margin: 0; padding: 8px; border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 0; }
.qn-bitem svg { width: 100%; height: auto; }
.qn-bitem figcaption { color: #334155; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qn-bfail { color: var(--danger); font-size: 12px; padding: 30px 0; display: flex; gap: 4px; align-items: center; }
.qn-bmore { display: grid; place-items: center; border: 1px dashed var(--line-2); border-radius: var(--r-md); }
.qn-bprog { display: grid; gap: 6px; margin-bottom: 12px; }
.qn-bbar { height: 8px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.qn-bbar i { display: block; height: 100%; width: 0; background: var(--grad); transition: width .15s; }
.qn-berr { color: var(--danger); margin-bottom: 10px; }

/* ---------- scanner */
.qn-drop { border: 2px dashed var(--line-2); border-radius: var(--r-lg); padding: 38px 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; cursor: pointer;
  background: var(--grad-soft); transition: border-color .15s; }
.qn-drop:hover, .qn-drop.drag, .qn-drop:focus-visible { border-color: var(--primary); }
.qn-drop .ico-lg { width: 40px; height: 40px; color: var(--primary); }
.qn-scan-acts { margin-top: 14px; }
.qn-cam { position: relative; margin-top: 14px; border-radius: var(--r-lg); overflow: hidden; background: #000; max-width: 560px; }
.qn-cam video { width: 100%; display: block; }
.qn-cam-frame { position: absolute; inset: 15%; border: 3px solid rgba(255, 255, 255, .85); border-radius: 18px; box-shadow: 0 0 0 999px rgba(0, 0, 0, .35); pointer-events: none; }
.qn-cam-stop { position: absolute; right: 10px; top: 10px; }
.qn-shot { margin-top: 14px; }
.qn-shot canvas { max-width: 100%; max-height: 320px; border-radius: var(--r-md); border: 1px solid var(--line); }
.qn-kv { width: 100%; border-collapse: collapse; margin-bottom: 12px; font-size: 14px; }
.qn-kv th { text-align: left; color: var(--muted); font-weight: 500; padding: 7px 10px 7px 0; width: 32%; vertical-align: top; border-bottom: 1px solid var(--line); }
.qn-kv td { padding: 7px 0; border-bottom: 1px solid var(--line); word-break: break-word; }
.qn-result .textarea { font-size: 12.5px; }
.qn-result .row { margin-top: 12px; }
.tag.ok { background: var(--success-bg); color: var(--success); }
.tag.bad { background: var(--danger-bg); color: var(--danger); }
.qn-result .tag { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; padding: 2px 8px; border-radius: 99px; }

/* ---------- FAQ */
.qn-faq { margin: 30px auto 10px; }
.qn-faq h2 { font-size: 22px; }
.qn-faq details { border: 1px solid var(--line); border-radius: var(--r-md); background: var(--elev); margin-bottom: 8px; }
.qn-faq summary { padding: 12px 16px; cursor: pointer; font-weight: 600; }
.qn-faq details p { margin: 0; padding: 0 16px 14px; color: var(--text-2); }

/* ---------- responsive */
@media (max-width: 1180px) { .tn-tool-page .qn-gen { grid-template-columns: minmax(0, 1fr) 300px; } }
@media (max-width: 900px) {
  .qn-gen, .tn-tool-page .qn-gen { grid-template-columns: 1fr; }
  .qn-right { position: static; order: -1; }
  .qn-preview svg { max-height: 300px; }
  .qn-sticky { display: grid; grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .qn-types { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .qn-fields, .qn-row { grid-template-columns: 1fr; }
  .qn-step { padding: 14px 12px 16px; }
  .qn-range { min-width: 0; }
}
.qn-cin .qn-hex::placeholder { text-transform: none; font-family: var(--font-ui); }