:root{--bg:#f5f7fb;--card:#fff;--text:#151922;--muted:#737b8c;--line:#e8ebf1;--primary:#111827;--accent:#2563eb;--danger:#d92d20;--warn:#b54708;--ok:#067647;--radius:20px;--shadow:0 10px 30px rgba(17,24,39,.06)}*{box-sizing:border-box}html{background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}body{margin:0;padding-bottom:96px}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.shell{width:min(100%,980px);margin:0 auto;padding:20px}.shell.narrow{width:min(100%,620px)}.topbar{position:sticky;top:0;z-index:20;height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100% - 980px)/2));background:rgba(245,247,251,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(232,235,241,.8)}.brand{font-weight:800}.user-pill{font-size:13px;background:#fff;padding:8px 12px;border-radius:999px;border:1px solid var(--line)}h1{font-size:clamp(28px,5vw,40px);line-height:1.05;margin:8px 0 8px}h2{font-size:20px;margin:26px 0 12px}.muted{color:var(--muted)}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:700}.hero{padding:14px 0 10px}.hero h1{font-size:44px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.stack{display:flex;flex-direction:column;gap:16px}.stack label{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:650}.stack input,.stack textarea,.stack select,.search input,.scan-field input,.inventory-product input{width:100%;border:1px solid #d9dee8;background:#fff;border-radius:14px;padding:14px 15px;outline:none}.stack input:focus,.search input:focus,.scan-field input:focus,.inventory-product input:focus{border-color:#8aa8ff;box-shadow:0 0 0 4px rgba(37,99,235,.08)}textarea{min-height:90px;resize:vertical}.btn{border:0;background:#eef1f6;color:var(--text);border-radius:14px;padding:13px 16px;font-weight:750;cursor:pointer;text-align:center}.btn.primary{background:var(--primary);color:#fff}.btn.large{padding:16px 20px;font-size:16px}.btn.compact{padding:10px 13px;font-size:13px}.btn.wide{width:100%;margin-top:12px}.btn:disabled{opacity:.45;cursor:not-allowed}.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}.action-card{min-height:135px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:var(--shadow)}.action-card.primary-action{background:var(--primary);color:#fff}.action-card strong{font-size:18px}.action-card small{opacity:.7;margin-top:3px}.action-icon{font-size:30px;margin-bottom:auto}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{background:#fff;border:1px solid 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100px}.cart-row,.line-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;display:flex;justify-content:space-between;align-items:center;gap:12px}.cart-row small,.line-item small{display:block;color:var(--muted);margin-top:3px}.qty{display:flex;align-items:center;gap:10px;margin-top:9px}.qty button{width:32px;height:32px;border:0;border-radius:10px;background:#eef1f6;font-size:20px}.sale-bottom{position:fixed;left:0;right:0;bottom:72px;z-index:15;background:rgba(255,255,255,.96);backdrop-filter:blur(15px);border-top:1px solid var(--line);padding:12px max(16px,calc((100% - 980px)/2));display:flex;justify-content:space-between;align-items:center;gap:16px}.sale-bottom small{display:block;color:var(--muted)}.sale-bottom strong{font-size:22px}.total-row{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;margin-top:14px;font-size:20px}.card.mini{margin-top:12px;display:flex;justify-content:space-between}.seg{display:flex;background:#e9edf4;padding:3px;border-radius:12px}.seg a{padding:8px 12px;border-radius:9px;font-size:13px}.seg a.active{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.05)}.bottom-nav{position:fixed;z-index:30;left:0;right:0;bottom:0;height:74px;padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.96);backdrop-filter:blur(18px);border-top:1px solid var(--line);display:flex;justify-content:center}.bottom-nav a{width:min(20%,150px);font-size:11px;color:#666;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}.bottom-nav span{font-size:21px;color:#333}.bottom-nav .nav-sale span{width:42px;height:42px;background:var(--primary);color:#fff;border-radius:14px;display:grid;place-items:center;margin-top:-18px;box-shadow:0 8px 18px rgba(17,24,39,.25)}.alert{padding:12px 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2px}.toast{position:fixed;z-index:200;left:50%;bottom:95px;transform:translate(-50%,20px);opacity:0;background:#111827;color:white;padding:12px 16px;border-radius:14px;box-shadow:0 12px 30px rgba(0,0,0,.25);transition:.2s;max-width:90%;text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#b42318}.toast.success{background:#067647}@media(max-width:640px){.shell{padding:16px}.stats-grid{grid-template-columns:1fr 1fr}.stat.big{grid-column:1/-1}.action-grid{grid-template-columns:1fr 1fr}.action-card{min-height:122px;padding:15px}.topbar{padding:0 16px}.hero h1{font-size:38px}.sale-bottom{bottom:74px;padding:11px 16px}.bottom-nav a{flex:1}.user-pill{max-width:42vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}@media(min-width:900px){body{padding-bottom:30px}.bottom-nav{position:sticky;bottom:18px;width:560px;margin:20px auto 0;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.sale-bottom{bottom:20px;left:50%;right:auto;transform:translateX(-50%);width:min(100% - 40px,620px);border:1px solid var(--line);border-radius:22px}.scanner-panel video{aspect-ratio:4/3}}
.global-alert{position:fixed;z-index:80;top:72px;left:50%;transform:translateX(-50%);width:min(calc(100% - 32px),620px);box-shadow:var(--shadow)}.danger-link{color:var(--danger)}
.stats-grid.two{grid-template-columns:repeat(2,1fr);margin-top:12px}.analytics-grid{grid-template-columns:repeat(3,1fr);margin-top:14px}.stat small{color:var(--muted);font-size:11px;line-height:1.35}.product-description{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--line);line-height:1.55}.inventory-session{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.inventory-session h3{margin:6px 0}.inventory-session p{margin:0}.delta{color:var(--accent)}.status-badge{font-size:12px;font-weight:800;padding:7px 10px;border-radius:999px;white-space:nowrap}.status-completed{background:#ecfdf3;color:var(--ok)}.status-partially_refunded{background:#fff7ed;color:var(--warn)}.status-refunded{background:#fef3f2;color:var(--danger)}.sub-total-row{display:flex;justify-content:space-between;align-items:center;padding-top:10px;color:var(--muted)}.refund-line{display:grid!important;grid-template-columns:1fr 92px;align-items:center;gap:12px}.refund-line span{min-width:0}.refund-line strong,.refund-line small{display:block}.refund-line small{color:var(--muted);margin-top:4px;font-weight:500}.refund-line input{text-align:center}.danger-btn{background:#fef3f2;color:var(--danger);border:1px solid #fecdca}.check-line{display:flex!important;flex-direction:row!important;align-items:center;gap:10px!important}.check-line input{width:20px!important;height:20px;margin:0}.period-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:14px 0}.date-range{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.date-range input{border:1px solid #d9dee8;background:#fff;border-radius:12px;padding:9px 10px;outline:none}.date-range span{color:var(--muted)}
@media(max-width:640px){.stats-grid.two,.analytics-grid{grid-template-columns:1fr 1fr}.period-controls{align-items:stretch}.period-controls .seg{width:100%;display:grid;grid-template-columns:repeat(3,1fr)}.period-controls .seg a{text-align:center}.date-range{display:grid;grid-template-columns:1fr auto 1fr}.date-range .btn{grid-column:1/-1}.date-range input{width:100%;min-width:0}.inventory-session{align-items:flex-start;flex-direction:column}.inventory-session form{width:100%}.inventory-session .btn{width:100%}.refund-line{grid-template-columns:1fr 78px}.status-badge{align-self:flex-start}.section-head{align-items:flex-start}}