:root{
    --teal:#1A73E8; --teal-d:#1967D2; --teal-dd:#185ABC;
    --ink:#0F172A; --muted:#64748B; --line:#E2E8F0; --bg:#F1F5F9;
    --red:#DC2626; --red-bg:#FEF2F2; --amber:#D97706; --amber-bg:#FFFBEB; --green:#16A34A;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;font-family:'Segoe UI',Roboto,-apple-system,sans-serif;background:var(--bg);color:var(--ink);}
a{color:var(--teal-dd);}

/* Top gradient header — mirrors the mobile app's topbar */
.topbar{background:linear-gradient(135deg,var(--teal),var(--teal-dd));color:#fff;
    display:flex;align-items:center;gap:14px;padding:14px 20px;position:sticky;top:0;z-index:20;}
.side-toggle{background:rgba(255,255,255,.18);border:none;color:#fff;cursor:pointer;
    width:38px;height:38px;border-radius:9px;font-size:1.2rem;display:flex;align-items:center;justify-content:center;}
.side-toggle:hover{background:rgba(255,255,255,.3);}
.brand{font-weight:800;font-size:1.12rem;display:flex;align-items:center;gap:8px;}
.brand .online{color:rgba(255,255,255,.75);font-weight:600;font-size:.82rem;}
.topbar .spacer{flex:1;}
.userbox{display:flex;align-items:center;gap:12px;font-size:.9rem;}
.userbox .shop{font-weight:700;}
.shop-switch{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.35);
    border-radius:9px;padding:7px 12px;font:inherit;font-weight:700;cursor:pointer;max-width:200px;white-space:nowrap;}
.userbox{flex-wrap:nowrap;}
.shop-switch option{color:var(--ink);}
.btn-link{background:rgba(255,255,255,.18);border:none;color:#fff;cursor:pointer;font:inherit;
    font-weight:600;padding:7px 12px;border-radius:9px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.btn-link:hover{background:rgba(255,255,255,.3);}
.inline{display:inline;}

/* Shell: sidebar + content */
.shell{display:flex;align-items:flex-start;min-height:calc(100vh - 52px);}
.side{flex:0 0 232px;background:#fff;border-right:1px solid var(--line);padding:16px 12px;min-height:calc(100vh - 52px);}
.side .grp{font-size:.7rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);
    margin:16px 10px 6px;}
.side a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;text-decoration:none;
    color:var(--ink);font-weight:600;font-size:.92rem;margin-bottom:2px;}
.side a i{font-size:1.1rem;color:var(--muted);width:20px;text-align:center;}
.side a:hover{background:var(--bg);}
.side a.active{background:#EAF1FE;color:var(--teal-dd);}
.side a.active i{color:var(--teal-dd);}
.content{flex:1;min-width:0;padding:24px 28px;width:100%;}

/* Collapsed sidebar — icons only (like the mobile rail) */
body.side-collapsed .side{flex-basis:64px;}
body.side-collapsed .side a{justify-content:center;padding:11px 0;}
body.side-collapsed .side a span,
body.side-collapsed .side a{font-size:0;}
body.side-collapsed .side a i{font-size:1.2rem;}
body.side-collapsed .side .grp{font-size:0;margin:10px 0 2px;border-top:1px solid var(--line);}

h1{font-size:1.5rem;margin:0 0 4px;}
.sub{color:var(--muted);margin:0 0 20px;}

/* Cards (match mobile .pos-card) */
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px;
    box-shadow:0 1px 3px rgba(0,0,0,.04);}
.card-head{display:flex;align-items:center;gap:8px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.card-head i{color:var(--teal);}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:16px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,.04);}
.stat .n{font-size:1.55rem;font-weight:800;}
.stat .l{color:var(--muted);font-size:.82rem;}

/* Forms (match mobile .pos-input / .pos-btn) */
label{display:block;font-size:.8rem;font-weight:700;color:var(--teal-dd);margin:12px 0 6px;}
input,select{width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:12px;font:inherit;background:#fff;color:var(--ink);}
input:focus,select:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(26,115,232,.12);}
.row{display:flex;gap:12px;flex-wrap:wrap;}
.row > *{flex:1;min-width:160px;}

/* Floating-label field — saves vertical space, used across all forms */
/* Matches the mobile app's .float-field: label rests inside, floats up to sit on
   the border (a white "notch") when focused/filled. */
.field{position:relative;margin-top:16px;}
.field > input,.field > select,.field > textarea{width:100%;padding:14px;border:1.5px solid var(--line);
    border-radius:12px;font:inherit;background:#fff;color:var(--ink);}
.field > input::placeholder,.field > textarea::placeholder{color:transparent;}
.field > input:focus::placeholder,.field > textarea:focus::placeholder{color:#94A3B8;}
.field > input:focus,.field > select:focus,.field > textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(26,115,232,.12);}
.field > label{position:absolute;left:10px;top:13px;margin:0;color:var(--muted);font-size:.95rem;font-weight:500;
    pointer-events:none;transition:top .14s ease,font-size .14s ease,color .14s ease;
    padding:0 5px;background:#fff;border-radius:5px;max-width:calc(100% - 20px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.field > input:focus ~ label,
.field > input:not(:placeholder-shown) ~ label,
.field > input:-webkit-autofill ~ label,
.field > textarea:focus ~ label,
.field > textarea:not(:placeholder-shown) ~ label,
.field > select ~ label{top:-8px;font-size:.7rem;color:var(--teal-dd);font-weight:700;}
.field.check{display:flex;align-items:center;gap:10px;margin-top:14px;}
.field.check input{width:auto;}
.field.check label{position:static;font-size:.9rem;color:var(--ink);font-weight:500;pointer-events:auto;background:none;padding:0;}
.field .pw-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;
    color:var(--muted);cursor:pointer;width:auto;padding:6px;font-size:1.05rem;}
.field .pw-eye:hover{color:var(--teal);}

/* Modal */
.modal-back{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;align-items:flex-start;
    justify-content:center;padding:40px 16px;z-index:50;overflow-y:auto;}
.modal-back.open{display:flex;}
.modal{background:#fff;border-radius:16px;padding:22px;width:100%;max-width:640px;box-shadow:0 20px 50px rgba(0,0,0,.25);}
.modal .m-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.modal .m-head h3{margin:0;font-size:1.15rem;display:flex;align-items:center;gap:8px;}
.modal .m-x{background:none;border:none;font-size:1.3rem;color:var(--muted);cursor:pointer;width:auto;padding:4px;}
.btn{display:inline-flex;align-items:center;gap:8px;border:none;padding:12px 18px;border-radius:12px;
    font:inherit;font-weight:700;cursor:pointer;text-decoration:none;
    background:linear-gradient(135deg,var(--teal),var(--teal-d));color:#fff;box-shadow:0 4px 12px rgba(26,115,232,.3);}
.btn:hover{filter:brightness(1.05);}
.btn-ghost{background:#fff;color:var(--teal-dd);border:2px solid var(--teal);box-shadow:none;}
.btn-danger{background:var(--red);box-shadow:none;}
.btn-sm{padding:8px 13px;font-size:.85rem;border-radius:10px;}

/* Tables */
table{width:100%;border-collapse:collapse;}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);font-size:.9rem;}
th{color:var(--muted);font-size:.74rem;text-transform:uppercase;letter-spacing:.03em;}
td.num,th.num{text-align:right;}
/* DataTables' own stylesheet forces headers left; keep numeric headers aligned
   with their (right-aligned) values. Higher specificity than table.dataTable thead th. */
table.dataTable thead th.num{text-align:right;}
table.dataTable thead th.nosort{text-align:right;}
/* Segmented control (e.g. Sell category: All / Stock / Services) */
.seg{display:inline-flex;gap:4px;background:#EEF2F7;border:1px solid var(--line);border-radius:10px;padding:4px;flex-wrap:wrap;}
.seg-btn{border:none;background:transparent;color:var(--muted);font:inherit;font-weight:700;font-size:.84rem;
    padding:7px 14px;border-radius:7px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;}
.seg-btn.active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(8,28,66,.12);}

.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 9px;border-radius:999px;background:#F1F5F9;color:var(--muted);}
.badge-red{background:var(--red-bg);color:var(--red);}
.badge-amber{background:var(--amber-bg);color:var(--amber);}
.badge-green{background:#DCFCE7;color:var(--green);}

/* Messages */
.msg{padding:11px 14px;border-radius:12px;margin-bottom:14px;font-size:.9rem;}
.msg-err{background:var(--red-bg);border:1px solid #FECACA;color:#991B1B;}
.msg-ok{background:#F0FDF4;border:1px solid #BBF7D0;color:#166534;}
.empty{text-align:center;color:var(--muted);padding:34px;}
code{background:#F1F5F9;padding:2px 8px;border-radius:7px;font-weight:700;}

/* Sell (point of sale) */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;}
.prod{text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:12px;cursor:pointer;
    display:flex;flex-direction:column;gap:4px;font:inherit;transition:border-color .12s,box-shadow .12s;}
.prod:hover{border-color:var(--teal);box-shadow:0 2px 8px rgba(26,115,232,.12);}
.prod .pn{font-weight:700;color:var(--ink);}
.prod .pp{font-size:.78rem;color:var(--muted);}
.cart-line{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.9rem;}
.qbtn{width:30px;height:30px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;
    font-weight:700;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.qbtn:hover{border-color:var(--teal);color:var(--teal);}
.qv{min-width:42px;text-align:center;font-weight:700;}
.cart-total{display:flex;justify-content:space-between;font-weight:800;font-size:1.1rem;padding:12px 0 2px;}

/* Login (centered, no sidebar) */
.auth{max-width:390px;margin:60px auto;padding:0 16px;}

/* Full-screen branded auth background — fixed to the viewport, card centered */
.auth-bg{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
    padding:20px 16px;overflow:hidden;
    background:linear-gradient(135deg,#1A73E8 0%,#185ABC 55%,#0F3E86 100%);}
/* Soft decorative bubbles */
.auth-bg::before,.auth-bg::after{content:"";position:absolute;border-radius:50%;
    background:rgba(255,255,255,.07);pointer-events:none;}
.auth-bg::before{width:420px;height:420px;top:-120px;left:-100px;}
.auth-bg::after{width:320px;height:320px;bottom:-110px;right:-80px;}
.auth-hero{position:relative;text-align:center;color:#fff;margin-bottom:22px;z-index:1;}
.auth-hero .logo{width:68px;height:68px;border-radius:18px;background:rgba(255,255,255,.14);
    display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px;backdrop-filter:blur(4px);}
.auth-hero .logo img{width:48px;height:48px;object-fit:contain;}
.auth-hero h1{margin:0;font-size:1.7rem;font-weight:800;letter-spacing:-.01em;}
.auth-hero h1 span{color:#8ec5ff;}
.auth-hero p{margin:4px 0 0;color:rgba(255,255,255,.82);font-size:.92rem;}
.auth-card{position:relative;z-index:1;width:100%;max-width:400px;background:#fff;border-radius:18px;
    padding:26px 24px;box-shadow:0 24px 60px rgba(8,28,66,.35);}
.auth-card .card-head{font-size:1.05rem;}
.auth-card .btn{box-shadow:none;}
.auth-foot{text-align:center;color:rgba(255,255,255,.75);font-size:.78rem;margin-top:18px;position:relative;z-index:1;}

/* Button loading spinner */
.spin{display:inline-block;width:15px;height:15px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
    border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:4px;}
@keyframes spin{to{transform:rotate(360deg);}}

/* Desktop: header + sidebar stay put; only the content area scrolls */
@media (min-width:761px){
    body.app{height:100vh;overflow:hidden;display:flex;flex-direction:column;}
    body.app .topbar{position:static;flex:0 0 auto;}
    body.app .shell{flex:1 1 auto;min-height:0;overflow:hidden;align-items:stretch;}
    body.app .side{overflow-y:auto;min-height:0;}
    body.app .content{overflow-y:auto;min-height:0;}
}

/* Mobile: the sidebar becomes an off-canvas slide-out drawer (like the app) */
.drawer-backdrop{display:none;}
@media (max-width:760px){
    .shell{flex-direction:column;}
    .content{padding:18px 16px;width:100%;}
    .side{position:fixed;top:0;left:0;height:100vh;width:264px;z-index:60;background:#fff;flex:none;
        transform:translateX(-100%);transition:transform .22s ease;overflow-y:auto;
        border-right:1px solid var(--line);box-shadow:0 10px 50px rgba(8,28,66,.28);padding:16px 12px;}
    body.drawer-open .side{transform:translateX(0);}
    body.drawer-open .drawer-backdrop{display:block;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:55;}
    /* Always show full labels in the mobile drawer, even if desktop was collapsed */
    body.side-collapsed .side a{font-size:.95rem;justify-content:flex-start;padding:10px 12px;}
    body.side-collapsed .side a i{font-size:1.1rem;}
    body.side-collapsed .side .grp{font-size:.7rem;border-top:none;}
    /* Free up header room on a phone so the store name shows in full. */
    .hide-mobile{display:none;}
    .brand .online{display:none;}
    .brand{font-size:1rem;}
    .shop-switch{max-width:52vw;}
}