:root{
  --brand:#0f9d8a; --brand2:#0b7d6e; --bg:#f4f7f6; --card:#fff;
  --ink:#1f2933; --muted:#7a8794; --line:#eef1f0; --warn:#e0563b; --ok:#2e9e6b;
  --gold:#c08a2d; --shadow:0 2px 10px rgba(15,157,138,.08);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6;
  max-width:520px;margin:0 auto;min-height:100vh;
}
#app{display:flex;flex-direction:column;min-height:100vh}
.app-header{
  position:sticky;top:0;z-index:20;background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow)
}
.app-header__title{font-size:17px;font-weight:700}
.app-header__user{font-size:12px;opacity:.92}
.view{flex:1;padding:14px 14px 90px;overflow-x:hidden}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px;box-shadow:var(--shadow)}
.card h3{margin:0 0 10px;font-size:15px;color:var(--brand2)}
.grid{display:grid;gap:10px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* stat */
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px;text-align:center;box-shadow:var(--shadow)}
.stat .num{font-size:20px;font-weight:800;color:var(--brand2)}
.stat .lbl{font-size:11px;color:var(--muted);margin-top:2px}

/* quick actions */
.qa{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 6px;border-radius:12px;background:#f3faf8;cursor:pointer;font-size:12px;color:var(--ink)}
.qa .ico{font-size:24px}
.qa:active{transform:scale(.96)}

/* list */
.list{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.list-item{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:none}
.list-item .li-main{flex:1;min-width:0}
.list-item .li-title{font-weight:600}
.list-item .li-sub{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-item .li-right{font-weight:700;color:var(--brand2)}

/* badges */
.badge{display:inline-block;font-size:11px;padding:1px 8px;border-radius:20px;background:#e8f5f1;color:var(--brand2)}
.badge.gold{background:#fff4dd;color:var(--gold)}
.badge.warn{background:#fdecea;color:var(--warn)}
.badge.muted{background:#eef1f3;color:var(--muted)}

/* buttons */
.btn{display:inline-block;border:none;border-radius:10px;padding:11px 14px;font-size:14px;font-weight:600;cursor:pointer;background:#eef1f0;color:var(--ink)}
.btn:active{opacity:.85}
.btn-primary{background:var(--brand);color:#fff;width:100%}
.btn-block{width:100%}
.btn-ghost{background:transparent;border:1px solid var(--brand);color:var(--brand)}
.btn-sm{padding:6px 10px;font-size:12px;border-radius:8px}
.btn-danger{background:#fdecea;color:var(--warn)}
.btn-row{display:flex;gap:10px;margin-top:12px}

/* form */
.field{margin-bottom:10px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.input,select.input,textarea.input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px;font-size:14px;background:#fbfdfc;color:var(--ink)}
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg button{border:1px solid var(--line);background:#fff;border-radius:20px;padding:6px 12px;font-size:12px;color:var(--muted)}
.seg button.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* search */
.search{display:flex;gap:8px;margin-bottom:10px}
.search .input{flex:1}

/* FAB */
.fab{position:fixed;right:18px;bottom:74px;width:52px;height:52px;border-radius:50%;background:var(--brand);color:#fff;border:none;font-size:24px;box-shadow:0 4px 14px rgba(15,157,138,.4);z-index:15;max-width:none}
.fab:active{transform:scale(.94)}

/* bottom nav */
.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:520px;display:flex;background:#fff;border-top:1px solid var(--line);z-index:25}
.nav-item{flex:1;text-align:center;padding:7px 0 8px;font-size:11px;color:var(--muted);text-decoration:none;display:flex;flex-direction:column;align-items:center;gap:2px}
.nav-item .nav-ico{font-size:18px}
.nav-item.active{color:var(--brand)}
.nav-cashier .nav-ico{background:var(--brand);color:#fff;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;margin-top:-2px}

/* modal */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40;display:flex;align-items:flex-end;justify-content:center}
.modal{background:#fff;width:100%;max-width:520px;border-radius:18px 18px 0 0;padding:18px 16px 24px;max-height:86vh;overflow:auto;animation:up .2s ease}
@keyframes up{from{transform:translateY(40px);opacity:.6}to{transform:translateY(0);opacity:1}}
.modal h3{margin:0 0 12px;color:var(--brand2)}
.modal .close{float:right;font-size:20px;color:var(--muted);cursor:pointer}

/* cart item */
.cart-item{border:1px solid var(--line);border-radius:12px;padding:10px;margin-bottom:8px}
.cart-item .ci-top{display:flex;justify-content:space-between;align-items:center}
.cart-item .ci-name{font-weight:600}
.cart-item .ci-price{color:var(--brand2);font-weight:700}
.stepper{display:flex;align-items:center;gap:8px}
.stepper button{width:28px;height:28px;border-radius:8px;border:1px solid var(--line);background:#fff;font-size:16px}
.tag-pay{display:inline-block;font-size:11px;padding:2px 8px;border-radius:8px;background:#eef1f0;color:var(--ink);margin:2px}

/* toast */
.toast{position:fixed;left:50%;top:30%;transform:translate(-50%,-50%);background:rgba(31,41,51,.92);color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;z-index:60;opacity:0;transition:.2s;pointer-events:none;max-width:80%}
.toast.show{opacity:1}

.empty{text-align:center;color:var(--muted);padding:30px 0;font-size:13px}
.section-title{font-size:13px;color:var(--muted);margin:6px 2px}
.row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.muted{color:var(--muted)}
.right{text-align:right}
.mt{margin-top:12px}