:root{--bg:#f4f7fb;--panel:#fff;--text:#111827;--muted:#64748b;--line:#dbe3ee;--primary:#2563eb;--primary2:#1d4ed8;--danger:#dc2626;--warn:#f59e0b;--success:#16a34a;--shadow:0 10px 30px rgba(15,23,42,.08);--radius:18px;--sidebar:260px}
[data-theme="dark"]{--bg:#0b1220;--panel:#111b2e;--text:#f8fafc;--muted:#94a3b8;--line:#24324a;--primary:#3b82f6;--primary2:#60a5fa;--shadow:0 10px 30px rgba(0,0,0,.25)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}button,input,select{font:inherit}button{cursor:pointer}.topbar{position:fixed;inset:0 0 auto 0;height:72px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 18px;z-index:20}.brand{display:flex;align-items:center;gap:10px}.brand-icon{font-size:32px}.brand small{display:block;color:var(--muted);font-size:12px}.top-actions{margin-left:auto;display:flex;gap:8px}.icon-btn{border:0;background:transparent;color:var(--text);font-size:24px;width:48px;height:48px;border-radius:12px}.icon-btn:hover{background:var(--bg)}.sidebar{position:fixed;top:72px;bottom:0;left:0;width:var(--sidebar);background:var(--panel);border-right:1px solid var(--line);padding:16px;display:flex;flex-direction:column;z-index:15}.nav-item{width:100%;border:0;background:transparent;color:var(--text);text-align:left;padding:16px;border-radius:14px;font-weight:700;font-size:17px;margin-bottom:6px}.nav-item.active,.nav-item:hover{background:color-mix(in srgb,var(--primary) 13%,transparent);color:var(--primary)}.sidebar-footer{margin-top:auto;color:var(--muted);padding:12px}.main{margin-left:var(--sidebar);padding:96px 24px 36px}.screen{display:none}.screen.active{display:block}.page-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px}.page-head h1{margin:0;font-size:clamp(28px,4vw,42px)}.page-head p{margin:6px 0 0;color:var(--muted)}.clock{font-weight:800;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.big-tile{min-height:150px;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;font-size:20px}.big-tile span{font-size:46px}.big-tile.primary{background:var(--primary);color:white;border-color:transparent}.big-tile:active{transform:scale(.98)}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:22px 0}.stat-card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.stat-card{padding:20px}.stat-card small{display:block;color:var(--muted);font-weight:700}.stat-card strong{display:block;margin-top:8px;font-size:28px}.stat-card.warning strong{color:var(--warn)}.panel{padding:20px}.btn{min-height:48px;border-radius:12px;border:1px solid var(--line);padding:10px 18px;font-weight:800}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.secondary{background:var(--panel);color:var(--text)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn.full{width:100%;margin-top:10px}.sale-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(300px,1fr);gap:20px}.scan-box{font-weight:800}.scan-row{display:flex;gap:10px;margin-top:8px}.scan-row input,.large-search,input,select{width:100%;min-height:50px;padding:12px 14px;border:2px solid var(--line);border-radius:12px;background:var(--panel);color:var(--text)}.scan-row input:focus,.large-search:focus,input:focus,select:focus{outline:3px solid color-mix(in srgb,var(--primary) 25%,transparent);border-color:var(--primary)}.cart{margin-top:18px}.cart-empty{text-align:center;padding:50px 10px;color:var(--muted)}.cart-item{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;border-top:1px solid var(--line);padding:14px 0}.thumb{width:56px;height:56px;border-radius:12px;background:var(--bg);display:grid;place-items:center;overflow:hidden;font-size:26px}.thumb img{width:100%;height:100%;object-fit:cover}.cart-name{font-weight:800}.cart-meta{color:var(--muted);font-size:13px}.qty-controls{display:flex;align-items:center;gap:8px}.qty-controls button{width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);font-size:22px;font-weight:900}.line-price{text-align:right;min-width:88px}.line-price b{display:block}.line-price small{color:var(--success)}.total-line,.grand-total{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line)}.grand-total{font-size:24px;border-bottom:0}.grand-total strong{color:var(--primary);font-size:34px}.totals-panel label{display:block;margin-top:14px;font-weight:700}.receipt-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.large-search{font-size:18px;margin-bottom:18px}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.product-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.product-photo{height:160px;background:var(--bg);display:grid;place-items:center;font-size:48px;overflow:hidden}.product-photo img{width:100%;height:100%;object-fit:cover}.product-body{padding:16px}.product-body h3{margin:0 0 4px}.product-body p{margin:4px 0;color:var(--muted)}.product-prices{display:flex;justify-content:space-between;margin-top:12px}.profit{color:var(--success);font-weight:800}.stock-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.stock-controls button{min-height:50px;font-size:18px}.stock-list{display:grid;gap:12px;margin-bottom:20px}.stock-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;background:var(--panel);border:1px solid var(--line);padding:14px;border-radius:14px}.stock-row h3{margin:0}.stock-row p{margin:4px 0 0;color:var(--muted)}.stock-number{font-size:24px;font-weight:900}.badge{display:inline-flex;padding:6px 10px;border-radius:999px;font-weight:800;font-size:12px}.badge.warning{background:#fef3c7;color:#92400e}.badge.danger{background:#fee2e2;color:#991b1b}.alert-row{display:flex;gap:8px;margin-bottom:14px}.history-list{max-height:360px;overflow:auto}.history-item{padding:10px 0;border-bottom:1px solid var(--line)}.history-item small{color:var(--muted)}.filter-row,.report-actions{display:flex;gap:10px;align-items:end}.filter-row label{font-weight:700}.reports-grid,.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:18px}.panel h2{margin-top:0}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}.muted{color:var(--muted)}.file-label{text-align:center;display:block}dialog{border:0;border-radius:20px;background:var(--panel);color:var(--text);width:min(720px,94vw);box-shadow:0 30px 80px rgba(0,0,0,.3);padding:0}dialog::backdrop{background:rgba(2,6,23,.66)}dialog form{padding:20px}.dialog-head,.dialog-actions{display:flex;justify-content:space-between;align-items:center;gap:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid label,.settings-grid label{font-weight:700}.form-grid input,.form-grid select,.settings-grid input{margin-top:6px}.photo-preview{height:160px;margin-top:14px;border:2px dashed var(--line);border-radius:14px;display:grid;place-items:center;font-size:40px;overflow:hidden}.photo-preview img{width:100%;height:100%;object-fit:cover}.dialog-actions{margin-top:18px}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,120px);background:#111827;color:#fff;padding:14px 20px;border-radius:12px;z-index:100;transition:.25s;box-shadow:var(--shadow)}.toast.show{transform:translate(-50%,0)}.error{color:var(--danger)}
@media(max-width:900px){:root{--sidebar:230px}.dashboard-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.sale-layout,.reports-grid,.settings-grid{grid-template-columns:1fr}.totals-panel{position:static}}
@media(max-width:700px){.topbar{height:64px}.brand strong{font-size:15px}.sidebar{top:64px;transform:translateX(-105%);transition:.25s;box-shadow:var(--shadow)}.sidebar.open{transform:translateX(0)}.main{margin-left:0;padding:82px 14px 28px}.dashboard-grid{gap:12px}.big-tile{min-height:125px}.big-tile span{font-size:38px}.page-head{align-items:flex-start}.page-head>.report-actions{flex-wrap:wrap}.form-grid{grid-template-columns:1fr}.stock-row{grid-template-columns:1fr auto}.stock-row .stock-controls{grid-column:1/-1}.receipt-actions{grid-template-columns:1fr}.filter-row{flex-wrap:wrap}.clock{display:none}}
@media(max-width:430px){.dashboard-grid{grid-template-columns:1fr 1fr}.big-tile{min-height:110px;font-size:16px}.stats-grid{grid-template-columns:1fr 1fr}.stat-card{padding:14px}.stat-card strong{font-size:22px}.page-head h1{font-size:28px}.top-actions .icon-btn{width:40px}.cart-item{grid-template-columns:48px 1fr}.line-price{grid-column:2;text-align:left}.qty-controls{grid-column:2}}
@media print{.topbar,.sidebar,.page-head,.filter-row,.report-actions,.btn{display:none!important}.main{margin:0;padding:0}.screen{display:none!important}#screen-reports.active{display:block!important}.panel,.stat-card{box-shadow:none;border:1px solid #bbb}body{background:white;color:black}}

.discount-panel{margin-top:16px;border:2px solid var(--line);border-radius:14px;padding:14px}.discount-panel legend{font-weight:900;padding:0 8px}.admin-discount-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.check-label{display:flex!important;align-items:center;gap:10px}.check-label input{width:24px!important;min-height:24px!important;margin:0!important}.discount-panel.locked{opacity:.72}.discount-panel input:disabled,.discount-panel select:disabled{cursor:not-allowed}.discount-badge{display:inline-flex;margin-top:8px;padding:5px 9px;border-radius:999px;background:color-mix(in srgb,var(--success) 16%,transparent);color:var(--success);font-size:12px;font-weight:900}@media(max-width:700px){.admin-discount-head{align-items:stretch;flex-direction:column}}

.full-span{grid-column:1/-1}.full-span textarea{width:100%;min-height:130px;resize:vertical;font:inherit}.check-label{align-self:end}