:root{--color-bg:#f4f6fb;--color-surface:#fff;--color-border:#e4e8f1;--color-text:#1a2233;--color-text-muted:#6b7280;--color-text-faint:#9aa1b1;--color-primary:#3457e6;--color-primary-dark:#2743bd;--color-primary-bg:#eaefff;--color-accent:#7c5cff;--color-success:#1a9e5c;--color-success-bg:#e3f8ec;--color-danger:#e0392e;--color-danger-bg:#fdeaea;--color-warning:#d97a06;--color-warning-bg:#fff2df;--color-info:#2563eb;--color-info-bg:#e8f0fe;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-card:0 1px 2px #1720420a, 0 8px 24px #1720420f;--shadow-pop:0 12px 32px #17204224;--sans:"Inter", -apple-system, "Segoe UI", Roboto, sans-serif;--mono:"IBM Plex Mono", ui-monospace, Consolas, 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var(--color-accent));color:#fff;border-radius:9px;place-items:center;width:30px;height:30px;font-size:15px;font-weight:700;display:grid}.app-brand-name{letter-spacing:-.01em;color:var(--color-text);font-size:16px;font-weight:700}.main-nav{flex-direction:column;gap:2px;display:flex}.main-nav a{border-radius:var(--radius-sm);color:var(--color-text-muted);align-items:center;gap:10px;padding:9px 12px;font-size:14px;font-weight:550;text-decoration:none;transition:background .12s,color .12s;display:flex}.main-nav a:hover{background:var(--color-bg);color:var(--color-text)}.main-nav a.active{background:var(--color-primary-bg);color:var(--color-primary-dark)}.app-content{flex:1;min-width:0;padding:28px 32px 48px}.page-header{justify-content:space-between;align-items:baseline;margin-bottom:20px;display:flex}.page-title{font-size:22px}.search-box{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);align-items:center;gap:8px;width:280px;padding:8px 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h1{text-align:center;margin-bottom:2px;font-size:22px}.picking-progress{text-align:center;color:var(--color-text-muted);font-size:14px;font-weight:650}.scan-viewport{aspect-ratio:4/3;border-radius:var(--radius-lg);object-fit:cover;width:100%;box-shadow:var(--shadow-pop);background:#0b0e17}.picking-item-list{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);margin:0;padding:0;list-style:none;overflow:hidden}.picking-item-list li{border-bottom:1px solid var(--color-border);padding:13px 16px;font-size:15px;font-weight:550}.picking-item-list li:last-child{border-bottom:none}.picking-screen>button{border-radius:var(--radius-md);background:var(--color-primary);color:#fff;cursor:pointer;border:none;padding:15px;font-size:16px;font-weight:700}.picking-screen>button:disabled{background:var(--color-border);color:var(--color-text-faint);cursor:not-allowed}.picking-loading{text-align:center;color:var(--color-text-muted);padding:40px}.stock-history-toggle{color:var(--color-text-muted);cursor:pointer;-webkit-user-select:none;user-select:none;margin:18px 0 10px;font-size:13.5px;font-weight:600}.stock-history-toggle:hover{color:var(--color-primary)}.stock-actions{align-items:center;gap:8px;display:flex}