:root{--ink:#07162f;--muted:#607087;--bg:#eef4fb;--surface:#fff;--line:#bfd2ea;--blue:#1269dc;--good:#087a4d;--warn:#a16207;--danger:#b42318;font-family:Inter,ui-sans-serif,system-ui,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #61a8ff;outline-offset:2px}main{min-height:100vh;display:grid;grid-template-columns:238px 1fr}aside{background:#07162f;color:#eaf2ff;padding:28px 16px;display:flex;flex-direction:column;gap:28px}.brand{font-size:1.5rem;font-weight:800}.brand span{color:#61a8ff}nav{display:grid;gap:6px}nav button{border:0;border-radius:8px;background:transparent;color:inherit;text-align:left;padding:11px 12px}nav button:hover,nav button.active{background:#12376e}.shell{padding:clamp(20px,4vw,48px);max-width:1500px;margin:auto;width:100%}header{display:flex;justify-content:space-between;gap:24px;align-items:start;margin-bottom:24px}h1{font-size:clamp(2rem,4vw,3.2rem);margin:4px 0}.eyebrow{letter-spacing:.12em;font-size:.75rem;font-weight:700;color:var(--blue)}.muted,small{color:var(--muted)}header label{display:grid;gap:6px;font-weight:700}.card,.metrics>div{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 18px 50px rgba(24,66,120,.10)}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}.metrics span{display:block;color:var(--muted);font-size:.8rem}.metrics strong{display:block;font-size:1.25rem;margin-top:6px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px}.toolbar label{display:grid;gap:4px;font-size:.8rem}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:650px}th,td{text-align:left;padding:13px 8px;border-bottom:1px solid var(--line)}.badge{border:0;border-radius:99px;padding:5px 8px;font-size:.75rem;font-weight:700}.exact_duplicate{background:#ddf7ec;color:var(--good)}.possible_duplicate{background:#fff2cc;color:var(--warn)}.conflict{background:#ffe1df;color:var(--danger)}.distinct{background:#e8eef8;color:#24416d}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}.company,.account{display:grid;gap:7px;text-align:left;padding:16px;border:1px solid var(--line);border-radius:12px;background:#fff}.company.selected,.account.selected{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.secondary{margin-top:16px;border:1px solid var(--blue);background:#fff;color:var(--blue);padding:10px 14px;border-radius:9px}.upload{border:2px dashed var(--blue);min-height:250px;display:grid;place-items:center;text-align:center}.mapping{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.mapping label{display:grid;gap:6px}.warning{background:#fff2cc;padding:12px;border-radius:8px;color:#734c00}.dedup{padding:16px;border-left:5px solid var(--line);margin:10px 0;border-radius:8px}.images{display:grid;grid-template-columns:1fr 1fr;gap:16px}.images div{height:180px;display:grid;place-content:center;text-align:center;background:linear-gradient(135deg,#e6edf6,#f7faff);border:1px dashed var(--line);border-radius:12px}dl{display:grid;grid-template-columns:160px 1fr;gap:10px}dt{font-weight:700}@media(max-width:768px){main{grid-template-columns:1fr}aside{padding:10px 14px;flex-direction:row;align-items:center;overflow:auto}aside small{display:none}nav{display:flex;white-space:nowrap}.shell{padding:18px}header{display:grid}.metrics{grid-template-columns:repeat(2,1fr)}.toolbar{align-items:stretch;flex-direction:column}.mapping{grid-template-columns:1fr}.images{grid-template-columns:1fr}table{min-width:580px}}@media(max-width:390px){.metrics{grid-template-columns:1fr}h1{font-size:2rem}.card{padding:16px}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

button,input,select{min-height:44px}
@media(max-width:768px){aside{display:grid;grid-template-columns:auto 1fr;align-items:start;overflow:visible}nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));white-space:normal}}

dialog{max-width:min(680px,calc(100vw - 32px));max-height:calc(100vh - 32px);overflow:auto;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 24px 80px #07162f66}dialog::backdrop{background:#07162f88}

/* R3: prevent intrinsic navigation width from expanding the mobile grid. */
@media(max-width:768px){aside{grid-template-columns:40px minmax(0,1fr);gap:8px}nav{min-width:0}nav button{min-width:0;overflow-wrap:anywhere}}

/* R3: .shell is a grid item. Its automatic min-width inherited the preview
   table's 650px intrinsic width, widening the document at 390px. Allow this
   specific grid item to shrink; .table-wrap remains the local scroll owner. */
@media(max-width:768px){.shell{min-width:0}}

/* Keep adversarial identifiers inside their own readable mobile components. */
@media(max-width:768px){.shell header>*,header label,#company,#account{min-width:0}#company,#account{width:100%;max-width:100%}.company strong,.account strong,.dedup p,.dedup small,td,dd{overflow-wrap:anywhere}}
/* R16: keep the intentionally wide transaction table inside its local scroll owner. */
@media(max-width:768px){.card,.table-wrap{min-width:0;max-width:100%}.table-wrap{width:100%;contain:paint}}
@media(max-width:768px){table{display:block;width:100%;min-width:0;max-width:100%;table-layout:fixed;overflow:hidden}th,td{overflow-wrap:anywhere}}
/* At narrow widths the five-column preview becomes a readable stacked record. */
@media(max-width:768px){table,thead,tbody,tr,th,td{display:block;width:100%;max-width:100%;min-width:0}thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}td{padding:9px 8px}}
@media(max-width:768px){.table-wrap table{width:100%!important;min-width:0!important;max-width:100%!important;table-layout:fixed!important}.table-wrap tbody,.table-wrap tr{width:100%!important;min-width:0!important;max-width:100%!important}}
.suggested-matches-list{display:grid;gap:10px}.suggested-match{border:1px solid var(--line);border-radius:10px;padding:12px;display:grid;gap:6px;overflow-wrap:anywhere}.suggested-match span{color:var(--muted);font-size:.9rem}.suggested-match ul{margin:0;padding-left:20px}.compact-button{margin:0;padding:7px 10px;font-size:.9rem}@media(max-width:768px){#suggested-matches-panel{width:calc(100vw - 24px);max-width:100%;padding:16px}.suggested-match{min-width:0}}
/* The content grid item must be allowed to shrink beside the desktop rail. */
.shell{min-width:0}