:root{--navy:#172033;--purple:#6857d9;--purple-soft:#f0edff;--bg:#f4f6fa;--card:#fff;--ink:#252938;--muted:#7a8192;--line:#e5e8ef;--green:#16825d;--red:#c74646;--shadow:0 12px 32px #1b233712}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.app-shell{grid-template-columns:250px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{background:var(--navy);color:#fff;flex-direction:column;align-self:start;min-height:100vh;padding:24px 18px;display:flex;position:sticky;top:0}.brand{align-items:center;gap:12px;display:flex}.sidebar .brand{padding:2px 8px 34px}.brand-mark{color:#fff;background:linear-gradient(135deg,#8877eb,#4a82e7);border-radius:14px;place-items:center;width:43px;height:43px;font-weight:900;display:grid}.brand strong,.brand small{display:block}.brand strong{font-size:14px}.brand small{color:#929cb2;margin-top:2px;font-size:11px}.nav-label,.eyebrow{color:var(--muted);text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:900}.sidebar .nav-label{color:#727d94;padding:0 12px 10px}.sidebar nav{gap:5px;display:grid}.sidebar nav button{color:#aeb6c9;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:11px;align-items:center;gap:12px;padding:12px 13px;font-weight:750;display:flex}.sidebar nav button:hover{color:#fff;background:#ffffff0d}.sidebar nav button.active{color:#fff;background:var(--purple)}.sidebar nav button span{text-align:center;width:18px;font-size:18px}.sidebar-foot{color:#7f899f;margin-top:auto;padding:12px;font-size:11px}.status-dot{background:#40d19c;border-radius:50%;width:7px;height:7px;margin-right:6px;display:inline-block}.main{min-width:0;padding:28px 34px 48px}.main header{justify-content:space-between;align-items:start;margin-bottom:18px;display:flex}.main h1{letter-spacing:-.03em;margin:0;font-size:26px}.main header p{color:var(--muted);margin:5px 0 0;font-size:13px}.environment{color:#604ec3;letter-spacing:.08em;background:#f2efff;border:1px solid #dcd7ff;border-radius:999px;padding:6px 10px;font-size:10px;font-weight:900}.notice{color:#8b6516;background:#fff8e8;border:1px solid #f2e2b9;border-radius:10px;margin-bottom:16px;padding:11px 14px;font-size:12px}.card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px}.panel{padding:20px}.panel h2,.product-card h2{margin:0 0 16px;font-size:15px}label{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;gap:6px;font-size:10px;font-weight:850;display:grid}input,select,textarea{border:1px solid var(--line);width:100%;color:var(--ink);text-transform:none;letter-spacing:0;background:#fff;border-radius:10px;outline:none;padding:11px 12px}input:focus,select:focus,textarea:focus{border-color:var(--purple);box-shadow:0 0 0 3px #6857d91f}.button{cursor:pointer;border:0;border-radius:10px;justify-content:center;align-items:center;padding:11px 14px;font-weight:850;text-decoration:none;display:inline-flex}.button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--purple);color:#fff}.dark{background:var(--navy);color:#fff}.secondary{background:var(--purple-soft);color:#5b49bd}.wide{width:100%}.sales-layout{grid-template-columns:minmax(0,1fr) 380px;gap:18px;display:grid}.picker{grid-template-columns:1.4fr .8fr 90px auto;align-items:end;gap:10px;display:grid}.hint{color:#5c4fb0;background:#f4f2ff;border-radius:10px;margin-top:14px;padding:12px;font-size:12px}.recent{margin-top:18px}.sale-row{border-bottom:1px solid var(--line);grid-template-columns:1.2fr .6fr .7fr .7fr;align-items:center;gap:10px;padding:12px 2px;font-size:12px;display:grid}.sale-row small,.cart-item small{color:var(--muted);margin-top:4px;display:block}.pill{border-radius:999px;width:max-content;padding:4px 8px;font-size:10px;font-weight:850;display:inline-flex}.pill.success{color:var(--green);background:#e7f6ef}.pill.danger{color:var(--red);background:#fceced}.cart{flex-direction:column;min-height:520px;display:flex}.cart-list{flex:1;align-content:start;gap:9px;display:grid}.empty{color:var(--muted);text-align:center;padding:42px 10px;font-size:13px}.cart-item{border:1px solid var(--line);border-radius:11px;grid-template-columns:1fr auto auto;align-items:center;gap:10px;padding:11px;font-size:12px;display:grid}.cart-item button{color:var(--red);cursor:pointer;background:#fceced;border:0;border-radius:7px;width:27px;height:27px}.cart-total{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:16px 0;font-size:19px;display:flex}.toolbar{align-items:center;gap:12px;margin-bottom:15px;display:flex}.toolbar input{max-width:360px}.toolbar span{color:var(--muted);font-size:12px}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;display:grid}.product-card{padding:17px}.product-heading{justify-content:space-between;gap:12px;display:flex}.product-heading h2{min-height:38px}.money-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.money-grid div{background:var(--bg);border-radius:9px;padding:10px}.money-grid small,.money-grid strong{display:block}.money-grid small{color:var(--muted);text-transform:uppercase;font-size:9px}.money-grid strong{margin-top:3px;font-size:13px}.sizes{flex-wrap:wrap;gap:5px;margin:13px 0;display:flex}.sizes span{background:#f0f1f5;border-radius:6px;padding:5px 7px;font-size:10px}.actions{grid-template-columns:1fr 1fr;gap:7px;display:grid}.stack{gap:16px;display:grid}.student-form{grid-template-columns:1.2fr repeat(4,1fr) auto;align-items:end;gap:10px;display:grid}.student-form h2{margin:4px 0 0}.table-card{overflow:auto}table{border-collapse:collapse;width:100%;font-size:12px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:13px 16px}th{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:9px}.reports-layout{grid-template-columns:minmax(0,1fr) 330px;gap:18px;display:grid}.metric-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.metric{padding:17px}.metric span,.metric strong{display:block}.metric span{color:var(--muted);font-size:11px}.metric strong{margin-top:5px;font-size:26px}.report-row{border-bottom:1px solid var(--line);padding:13px 2px}.report-row small{color:var(--muted);margin-top:3px;font-size:10px;display:block}.report-row p{margin:8px 0 0;font-size:12px;line-height:1.5}.qr-card{text-align:center}.qr-card p{color:var(--muted);font-size:12px;line-height:1.5}.qr-card code{overflow-wrap:anywhere;background:var(--bg);border-radius:9px;margin:14px 0;padding:10px;font-size:10px;display:block}.qr-placeholder{outline:1px solid var(--line);background:repeating-linear-gradient(45deg,#172033 0 7px,#fff 7px 14px);border:10px solid #fff;place-items:center;width:145px;height:145px;margin:8px auto 18px;display:grid}.qr-placeholder span{border:6px solid var(--navy);background:#fff;padding:8px;font-size:30px}.report-page{background:linear-gradient(145deg,#edf0f7,#fafafd);min-height:100vh;padding:28px 16px 50px}.report-shell{max-width:540px;margin:auto}.report-shell>.brand{margin-bottom:22px}.report-card{padding:25px}.report-card h1{margin:5px 0 7px;font-size:25px}.report-card p{color:var(--muted);font-size:13px;line-height:1.6}.report-card form{gap:15px;display:grid}.report-card textarea{resize:vertical;min-height:135px}.success-state{text-align:center;padding:24px 5px}.success-check{width:60px;height:60px;color:var(--green);background:#e7f6ef;border-radius:50%;place-items:center;margin:auto;font-size:29px;display:grid}@media (max-width:1050px){.product-grid{grid-template-columns:repeat(2,1fr)}.sales-layout,.reports-layout{grid-template-columns:1fr}.student-form{grid-template-columns:repeat(2,1fr)}.student-form>div{grid-column:1/-1}}@media (max-width:720px){.app-shell{display:block}.sidebar{min-height:auto;padding:14px;position:static}.sidebar .brand,.nav-label,.sidebar-foot{display:none}.sidebar nav{grid-template-columns:repeat(4,1fr)}.sidebar nav button{justify-content:center;padding:10px 6px;font-size:11px}.sidebar nav button span{display:none}.main{padding:20px 14px 90px}.main h1{font-size:22px}.picker{grid-template-columns:1fr 1fr}.product-grid,.student-form{grid-template-columns:1fr}.sale-row{grid-template-columns:1.2fr .7fr .8fr}.sale-row .pill{display:none}}