:root{--bg:#f5f7fb;--surface:#fff;--surface2:#eef2f7;--text:#172033;--muted:#667085;--line:#e6eaf0;--primary:#16a34a;--primary2:#0ea5e9;--danger:#dc2626;--warning:#f59e0b;--shadow:0 24px 60px rgba(15,23,42,.10);--radius:22px}body.dark{--bg:#0b1220;--surface:#101a2e;--surface2:#17233a;--text:#f8fafc;--muted:#aab6ca;--line:#26344f;--shadow:0 24px 60px rgba(0,0,0,.30)}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top right,rgba(14,165,233,.16),transparent 36%),var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}.app-shell{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.sidebar{padding:24px;border-right:1px solid var(--line);background:rgba(255,255,255,.55);backdrop-filter:blur(18px)}body.dark .sidebar{background:rgba(16,26,46,.75)}.brand{display:flex;gap:14px;align-items:center;padding:16px;border-radius:var(--radius);background:linear-gradient(135deg,var(--primary),var(--primary2));color:white;box-shadow:var(--shadow)}.brand-icon{width:48px;height:48px;border-radius:16px;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:26px}.brand strong{display:block;font-size:18px}.brand span{font-size:12px;opacity:.9}.menu{display:grid;gap:10px;margin-top:24px}.menu a{color:var(--text);text-decoration:none;padding:14px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);font-weight:700}.menu a:hover{border-color:var(--primary);transform:translateY(-1px)}.main{padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h1{margin:0;font-size:30px;letter-spacing:-.04em}.topbar p{margin:6px 0 0;color:var(--muted)}.mode-btn,.btn{border:0;border-radius:14px;padding:12px 16px;font-weight:800;cursor:pointer;background:var(--primary);color:white;text-decoration:none;display:inline-flex;align-items:center;gap:8px}.btn.secondary{background:var(--surface2);color:var(--text);border:1px solid var(--line)}.btn.danger{background:var(--danger)}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:1.1fr .9fr}.grid.cards{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.card h2,.card h3{margin:0 0 16px}.form-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;align-items:end}.field label{display:block;font-size:13px;color:var(--muted);font-weight:700;margin-bottom:7px}.field input,.field select{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:14px;background:var(--surface2);color:var(--text);outline:0}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.product-btn{border:1px solid var(--line);background:var(--surface2);color:var(--text);border-radius:18px;padding:16px;text-align:left;cursor:pointer;min-height:98px}.product-btn strong{display:block;font-size:16px}.product-btn span{display:block;margin-top:8px;color:var(--primary);font-weight:900}.cart-line,.report-line{display:flex;justify-content:space-between;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:13px 0}.qty{display:inline-flex;gap:8px;align-items:center}.qty button{width:30px;height:30px;border-radius:10px;border:1px solid var(--line);background:var(--surface2);color:var(--text);font-weight:900;cursor:pointer}.total-box{display:flex;justify-content:space-between;align-items:center;padding:18px;border-radius:18px;background:linear-gradient(135deg,rgba(22,163,74,.12),rgba(14,165,233,.12));margin-top:16px}.total-box strong{font-size:30px}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:13px;border-bottom:1px solid var(--line)}.table th{color:var(--muted);font-size:13px}.stat strong{font-size:28px;display:block}.stat span{color:var(--muted);font-weight:700}.alert{padding:14px 16px;border-radius:16px;margin-bottom:16px;font-weight:700}.alert-success{background:rgba(22,163,74,.12);color:#16a34a}.alert-danger{background:rgba(220,38,38,.12);color:#dc2626}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(440px,100%)}@media(max-width:920px){.app-shell{grid-template-columns:1fr}.sidebar{position:relative}.grid.two,.grid.cards,.form-row{grid-template-columns:1fr}.topbar{align-items:flex-start;gap:12px}.product-grid{grid-template-columns:repeat(2,1fr)}}