/* Cùng màu, phông, header, card, quy định và chân trang với Retec OCR */
:root {
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --surface-2: #FBFAF7;
  --ink: #14171F;
  --ink-2: #4B4F58;
  --muted: #8A8F99;
  --line: rgba(20, 23, 31, 0.10);
  --line-2: rgba(20, 23, 31, 0.18);
  --accent: #FF6B47;
  --accent-hover: #E8592F;
  --accent-soft: #FFF1EC;
  --teal: #21C7A8;
  --teal-soft: #E7F8F4;
  --danger: #C2412D;
  --danger-soft: #FDEEEA;
  --sel: #F59E0B;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
h1, h2 { font-family: 'Space Grotesk', system-ui, sans-serif; margin: 0; letter-spacing: -0.015em; }
button, select, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); font-size: 13px; }

/* header */
.top { border-bottom: 1px solid var(--line); background: rgba(247, 246, 242, 0.92); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 12px; }
.top .retec-brand { color: var(--ink); }  /* logo + nhãn: /shared/brand.css */
.quota { font-size: 13px; color: var(--ink-2); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; white-space: nowrap; }
.quota b { color: var(--ink); }
.quota.low b { color: var(--danger); }

/* intro */
.intro { padding: 44px 0 24px; }
.intro h1 { font-size: clamp(28px, 5vw, 38px); line-height: 1.12; }
.intro p { color: var(--ink-2); margin: 12px 0 0; }
.intro p.features { margin-top: 10px; font-size: 14.5px; font-weight: 600; color: var(--ink); }
.features span { white-space: nowrap; }

/* card trình sửa ảnh */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; margin-bottom: 20px; }
.editor { overflow: hidden; }
.toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.zoom { display: inline-flex; align-items: center; gap: 6px; }
#zoom-label { min-width: 44px; text-align: center; font: 13px 'IBM Plex Mono', ui-monospace, monospace; color: var(--ink-2); }
.grow { flex: 1; }
.statusbar { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 6px 16px; min-height: 31px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.status { color: var(--muted); font-size: 13px; }
.status.err { color: var(--danger); }

/* nút: cùng kiểu btn-ghost / nút cam của OCR */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 14px; border: 1.5px solid var(--line-2); border-radius: 8px; background: var(--surface); color: var(--ink); font-weight: 600; font-size: 13px; cursor: pointer; transition: border-color .15s, background .15s; }
.btn:hover:not(:disabled) { border-color: var(--ink); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.danger { color: var(--danger); }
.btn.danger:hover:not(:disabled) { border-color: var(--danger); }
select, input[type=text], input[type=number], input:not([type]), textarea { padding: 7px 10px; border: 1.5px solid var(--line-2); border-radius: 8px; background: var(--surface); width: 100%; outline: none; transition: border-color .15s; }
select:focus, input:focus, textarea:focus { border-color: var(--ink); }
textarea { resize: vertical; }
textarea::placeholder, input::placeholder { color: var(--muted); }
.seg { display: inline-grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 2px; padding: 3px; background: rgba(20, 23, 31, 0.05); border: 1px solid var(--line); border-radius: 10px; }
.seg button { border: 0; background: none; border-radius: 7px; padding: 6px 14px; font: 600 13px 'IBM Plex Sans', sans-serif; color: var(--ink-2); white-space: nowrap; cursor: pointer; transition: background .15s, color .15s; }
.seg button:hover:not(.on) { color: var(--ink); }
.seg button.on { background: var(--surface); color: var(--accent-hover); box-shadow: 0 1px 2px rgba(20, 23, 31, 0.08), 0 0 0 1px var(--line); }
.chk { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; cursor: pointer; }
.chk input, .props input[type=checkbox] { width: 15px; height: 15px; margin: 0; accent-color: var(--accent); }

/* vùng ảnh + bảng bên phải */
.layout { display: flex; height: clamp(520px, calc(100vh - 150px), 920px); min-height: 0; }
.stage { flex: 1; min-width: 0; overflow: auto; padding: 16px; position: relative; display: grid; background: var(--surface-2); }
.empty { margin: auto; display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--muted); text-align: center; max-width: 340px; padding: 40px 16px; border: 1.5px dashed var(--line-2); border-radius: 12px; font-size: 14px; }
.empty p { margin: 0; }
.canvas-wrap { position: relative; margin: auto; box-shadow: 0 4px 24px rgba(20, 23, 31, .16); background: repeating-conic-gradient(#ddd 0 25%, #f2f2f2 0 50%) 0 0 / 16px 16px; }
.canvas-wrap img { position: absolute; inset: 0; width: 100%; height: 100%; user-select: none; -webkit-user-drag: none; }
#result[hidden] { display: none; }
#overlay { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; touch-action: none; }
/* khung trong suốt, nét mảnh: chữ thay thế bên trong phải nhìn rõ */
#overlay .box { fill: transparent; stroke: rgba(255, 107, 71, .7); stroke-width: 1; stroke-dasharray: 4 3; vector-effect: non-scaling-stroke; cursor: move; }
#overlay .box.sel { stroke: var(--sel); stroke-width: 1; }
#overlay .handle { fill: transparent; stroke: var(--sel); stroke-width: 1; vector-effect: non-scaling-stroke; }
#overlay .tag { font: 600 12px 'IBM Plex Sans', system-ui, sans-serif; fill: #fff; paint-order: stroke; stroke: var(--accent); stroke-width: 3px; pointer-events: none; }
#overlay .sample { fill: rgba(33, 199, 168, .12); stroke: var(--teal); stroke-width: 2; stroke-dasharray: 6 4; vector-effect: non-scaling-stroke; pointer-events: none; }
#overlay .probe { fill: none; stroke-width: 1.5; vector-effect: non-scaling-stroke; pointer-events: none; }
#overlay .probe.ok { stroke: var(--teal); }
#overlay .probe.bad { stroke: var(--danger); }
#overlay .probe-tag { fill: #138A73; paint-order: stroke; stroke: #fff; pointer-events: none; font-family: 'IBM Plex Sans', system-ui, sans-serif; font-weight: 700; }
#overlay .line { fill: rgba(33, 199, 168, .05); stroke: rgba(33, 199, 168, .85); stroke-width: 1; stroke-dasharray: 4 3; vector-effect: non-scaling-stroke; cursor: pointer; }
#overlay .line:hover { fill: rgba(33, 199, 168, .18); stroke: var(--teal); stroke-width: 2; }
.pair { margin: auto; display: flex; gap: 16px; align-items: flex-start; }
.pair.split .canvas-wrap::before { content: attr(data-label); position: absolute; bottom: 100%; left: 0; margin-bottom: 4px; font-size: 12px; font-weight: 600; color: var(--ink-2); }
.pair.split { padding-top: 18px; }

.panel { width: 340px; flex-shrink: 0; border-left: 1px solid var(--line); background: var(--surface); overflow-y: auto; padding: 14px 16px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; }
.panel h2 { font-size: 17px; }
.list { list-style: none; padding: 0; margin: 10px 0; display: grid; gap: 4px; max-height: 150px; overflow-y: auto; }
.list li { padding: 6px 10px; border: 1px solid var(--line-2); border-radius: 8px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13.5px; }
.list li:hover { border-color: var(--ink); }
.list li.sel { border-color: var(--accent); background: var(--accent-soft); }
.props { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.props label { display: grid; gap: 4px; font-size: 12.5px; font-weight: 500; color: var(--ink-2); }
.props .full { grid-column: 1 / -1; }
.props .row { display: flex; }
.props .row .btn { width: 100%; }
.props .checks { display: flex; gap: 14px; flex-wrap: wrap; }
.props label.chk { display: flex; align-items: center; gap: 6px; color: var(--ink); font-size: 13.5px; }
.props input[type=color] { width: 100%; height: 34px; padding: 2px; border: 1.5px solid var(--line-2); border-radius: 8px; background: var(--surface); }
.props input[type=range], .lib input[type=range] { width: 100%; accent-color: var(--accent); }
.props label:has(output) { grid-template-columns: 1fr auto; }
.props label:has(output) input { grid-column: 1 / -1; }
.props output { order: 0; color: var(--ink); font: 12.5px 'IBM Plex Mono', ui-monospace, monospace; }
.hint { color: var(--muted); font-size: 12.5px; margin-top: 12px; }
.lib { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 14px; background: var(--surface-2); }
.lib > summary, .adv > summary { cursor: pointer; font-weight: 600; font-size: 13.5px; }
.lib > summary::marker, .adv > summary::marker { color: var(--accent); }
.lib input:not([type=range]) { margin: 8px 0; }
.lib label { display: grid; grid-template-columns: 1fr auto; gap: 4px; font-size: 12.5px; color: var(--ink-2); margin-top: 8px; }
.lib label input { grid-column: 1 / -1; }
.lib output { color: var(--ink); font-family: 'IBM Plex Mono', ui-monospace, monospace; }
.row2 { display: flex; gap: 8px; margin: 8px 0; }
.row2 .btn { flex: 1; }
#sheet { max-width: 100%; background: #fff; margin-top: 8px; border: 1px solid var(--line); border-radius: 6px; image-rendering: pixelated; }
.props .only-glyph { display: none; }
.props.glyph .only-glyph { display: grid; }
.props.glyph span.only-glyph { display: inline; }
.props.glyph p.only-glyph { display: block; }
.missing { color: var(--danger); }

/* ô xác minh cho nút Tải ảnh */
.gate { position: fixed; right: 16px; bottom: 16px; z-index: 20; }

@media (max-width: 860px) {
  .layout { flex-direction: column; height: auto; }
  .stage { flex: none; height: 70vh; }
  .panel { width: 100%; border-left: 0; border-top: 1px solid var(--line); }
}

/* quy định + chân trang */
.link { border: 0; background: none; padding: 0; color: var(--ink); font: inherit; font-size: 13px; font-weight: 600; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; cursor: pointer; white-space: nowrap; }
.rules { margin: 4px 0 40px; padding: 0 0 0 18px; color: var(--ink-2); font-size: 13.5px; }
.rules li { margin: 4px 0; }
.rules li::marker { color: var(--teal); }
.rules li.promise { list-style: none; margin: 0 0 10px -18px; padding: 10px 14px; border-radius: 10px; background: var(--teal-soft); border: 1px solid rgba(33, 199, 168, 0.35); color: var(--ink); font-weight: 600; }
.req { color: var(--danger); font-weight: 700; }
.foot { margin-top: auto; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.foot .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 20px; }
.foot b { color: var(--ink); font-family: 'Space Grotesk', sans-serif; }
.foot-links { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.foot-links .link { font-weight: 500; color: var(--ink-2); }

/* Góp ý · Liên hệ · Ủng hộ: cùng hộp thoại với OCR */
.top-right { display: flex; align-items: center; gap: 12px; min-width: 0; }
.link-btn { border: 0; background: none; padding: 6px 8px; border-radius: 8px; font: 600 13.5px 'IBM Plex Sans', sans-serif; color: var(--ink-2); cursor: pointer; }
.link-btn:hover, .link-btn:focus-visible { background: var(--surface); color: var(--ink); }
@media (max-width: 560px) { .links { display: none; } }  /* màn hẹp: nút nằm ở chân trang */
.dlg { border: 1px solid var(--line-2); border-radius: 14px; padding: 24px; width: min(440px, calc(100vw - 32px)); background: var(--surface); color: var(--ink); }
.dlg::backdrop { background: rgba(20, 23, 31, 0.45); }
.dlg-x { position: absolute; top: 10px; right: 10px; margin: 0; }
.dlg-x button { border: 0; background: none; width: 36px; height: 36px; border-radius: 8px; font-size: 22px; color: var(--ink-2); cursor: pointer; }
.dlg-x button:hover { background: var(--bg); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 0 40px 16px 0; }
.tabs button { border: 0; background: none; padding: 8px 12px; margin-bottom: -1px; border-bottom: 2px solid transparent; font: 600 14.5px 'IBM Plex Sans', sans-serif; color: var(--ink-2); cursor: pointer; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.label { display: block; font-weight: 600; font-size: 14px; margin: 0 0 8px; }
.dlg .label:not(:first-child) { margin-top: 14px; }
.dlg textarea { min-height: 110px; padding: 12px 14px; border-radius: 10px; }
.input { margin-bottom: 4px; }
.dlg .input { padding: 10px 12px; border-radius: 10px; }
.fb-note { margin: 8px 0 14px; }
.btn.wide { width: 100%; height: 46px; font-size: 15px; border-radius: 10px; }
.fb-status { text-align: center; margin: 10px 0 0; min-height: 20px; font-size: 13.5px; color: var(--muted); }
.contact-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.contact-list li { display: flex; align-items: center; justify-content: space-between; gap: 10px; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.contact-list a { color: var(--ink); font-weight: 600; text-decoration: none; word-break: break-all; }
.contact-list small { display: block; color: var(--muted); font-size: 12px; }
.qr { display: block; margin: 12px auto; border-radius: 10px; border: 1px solid var(--line); image-rendering: pixelated; }
.kv { width: 100%; border-collapse: collapse; font-size: 14px; }
.kv th, .kv td { text-align: left; vertical-align: top; padding: 10px 0; border-top: 1px solid var(--line); }
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 1px solid var(--line); }
.kv th { width: 36%; padding-right: 16px; color: var(--ink-2); font-weight: 500; }
.kv td { font-family: 'IBM Plex Mono', ui-monospace, monospace; word-break: break-word; }
.kv td .btn { float: right; margin: -3px 0 0 10px; padding: 2px 8px; font: 600 12px 'IBM Plex Sans', sans-serif; }
.btn.done { border-color: var(--teal); color: #138A73; }

/* trang chính sách & điều khoản */
a.link-btn { text-decoration: none; }
.policy { max-width: 760px; padding-top: 40px; padding-bottom: 56px; }
.policy h1 { font-size: clamp(28px, 5vw, 38px); line-height: 1.12; }
.policy h2 { font-size: 24px; margin: 40px 0 4px; padding-top: 8px; scroll-margin-top: 16px; }
.policy h3 { font-size: 16px; margin: 22px 0 6px; }
.policy p, .policy li { color: var(--ink-2); }
.policy ul { padding-left: 20px; margin: 6px 0; }
.policy li { margin: 6px 0; }
.policy li::marker { color: var(--teal); }
.policy b { color: var(--ink); }
.policy a { color: var(--ink); text-decoration-color: var(--accent); text-underline-offset: 3px; }
.policy code { font: 13px 'IBM Plex Mono', monospace; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 1px 4px; }
.policy-toc { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 0; }
.policy-toc a { padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--surface); font-size: 13.5px; font-weight: 600; text-decoration: none; }
.policy-toc a:hover { border-color: var(--ink); }
.policy section { scroll-margin-top: 16px; }

@media (max-width: 560px) {
  .intro { padding-top: 28px; }
  .toolbar { padding: 10px 12px; }
}
.status.busy::before, .spinner { content: ''; display: inline-block; width: 11px; height: 11px; margin-right: 7px; vertical-align: -1px; border: 2px solid var(--line-2); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; }
.page-busy { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; background: rgba(247, 246, 242, 0.7); backdrop-filter: blur(2px); cursor: progress; }
.page-busy[hidden] { display: none; }
.page-busy-box { display: flex; align-items: center; gap: 4px; padding: 14px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 8px 24px rgba(20, 23, 31, 0.12); font: 600 14px 'IBM Plex Sans', sans-serif; color: var(--ink); }
.page-busy .spinner { width: 18px; height: 18px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .status.busy::before, .spinner { animation-duration: 2s; } }
.picker { display: grid; gap: 6px; }
.picker-head { font-size: 12.5px; font-weight: 500; color: var(--ink-2); }
.picker-head small { font-weight: 400; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip { border: 1px solid var(--line-2); background: var(--surface); border-radius: 6px; padding: 3px 8px; font: 500 13px 'IBM Plex Sans', sans-serif; color: var(--ink); cursor: pointer; }
.chip.picked { border-color: var(--teal); background: var(--teal-soft); }
.chip.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-hover); }
.pick-opts { display: flex; flex-wrap: wrap; gap: 6px; align-items: stretch; }
.pick-opts button { display: grid; place-items: center; min-width: 44px; min-height: 36px; padding: 4px 6px; border: 1.5px solid var(--line-2); border-radius: 8px; background: #fff; font: 600 12px 'IBM Plex Sans', sans-serif; color: var(--ink-2); cursor: pointer; }
.pick-opts button img { max-height: 28px; image-rendering: auto; }
.pick-opts button.off { opacity: .55; }
.pick-opts button.on { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }