:root { --sidebar:#101827; --primary:#2563eb; --bg:#f4f7fb; }
body { background: var(--bg); font-family: Arial, sans-serif; }
.login-bg { background: linear-gradient(135deg,#0f172a,#2563eb); }
.login-card { width: 420px; }
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 260px; background: var(--sidebar); color: #fff; padding: 20px; position: fixed; top:0; bottom:0; overflow-y:auto; }
.brand { font-size: 22px; font-weight: 700; display:flex; gap:10px; align-items:center; margin-bottom:25px; }
.sidebar .nav-link { color:#cbd5e1; padding:11px 12px; border-radius:12px; display:flex; gap:10px; align-items:center; }
.sidebar .nav-link:hover { color:#fff; background:rgba(255,255,255,.09); }
.main-content { margin-left:260px; width:calc(100% - 260px); }
.topbar { background:#fff; padding:18px 24px; box-shadow:0 2px 14px rgba(15,23,42,.06); position:sticky; top:0; z-index:5; }
.stat-card, .soft-card { border:0; border-radius:22px; box-shadow:0 8px 22px rgba(15,23,42,.07); }
.stat-icon { width:48px; height:48px; border-radius:16px; display:flex; align-items:center; justify-content:center; background:#eff6ff; color:var(--primary); font-size:22px; }
.table-card { background:#fff; border-radius:18px; padding:20px; box-shadow:0 8px 22px rgba(15,23,42,.07); }
.pos-cart { position: sticky; top: 92px; }
.receipt { max-width: 360px; font-family: monospace; }
@media (max-width: 900px) { .sidebar { position:relative; width:100%; } .app-shell{display:block;} .main-content{margin-left:0;width:100%;} }

/* Thermal receipt and browser print layout */
.thermal-page {
    background: #fff;
    color: #111;
    border-radius: 8px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
    padding: 14px;
}

.thermal-58 { width: 58mm; max-width: 100%; }
.thermal-80 { width: 80mm; max-width: 100%; }

.thermal-receipt {
    font-family: "Courier New", monospace;
    font-size: 11px;
    line-height: 1.32;
    overflow-wrap: anywhere;
}

.receipt-header { margin-bottom: 2px; }
.receipt-logo {
    display: block;
    max-width: 25mm;
    max-height: 18mm;
    object-fit: contain;
    margin: 0 auto 5px;
}
.thermal-receipt .store-name {
    font-family: "Courier New", monospace;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}
.receipt-title {
    font-weight: 700;
    margin-top: 7px;
    letter-spacing: 0;
}

.receipt-line {
    border-top: 1px dashed #111;
    margin: 7px 0;
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: baseline;
}
.receipt-row span:first-child { min-width: 0; }
.receipt-row strong,
.receipt-row span:last-child {
    text-align: right;
    white-space: nowrap;
}
.receipt-item { margin-bottom: 6px; }
.receipt-item .item-name { font-weight: 700; }
.receipt-item .item-barcode { font-size: 10px; color: #333; }
.receipt-section-title {
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 4px;
}
.receipt-note,
.muted-row {
    color: #444;
    font-size: 10px;
}
.receipt-totals .receipt-row { margin-bottom: 2px; }
.total-row { font-size: 13px; font-weight: 700; }
.footer-note { margin-top: 10px; }

@media print {
    @page {
        margin: 0;
    }

    body {
        background: #fff !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    .sidebar,
    .topbar,
    .navbar,
    .d-print-none,
    .btn,
    .alert,
    .mobile-bottom-nav,
    .mobile-overlay,
    .app-shell > .sidebar,
    .main-content > nav {
        display: none !important;
    }

    .app-shell,
    .main-content,
    .container-fluid {
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        background: #fff !important;
    }

    .thermal-page {
        box-shadow: none !important;
        border-radius: 0 !important;
        padding: 2mm !important;
        margin: 0 !important;
    }

    .thermal-page.thermal-58 {
        width: 58mm !important;
    }

    .thermal-page.thermal-80 {
        width: 80mm !important;
    }

    .thermal-receipt {
        font-size: 10px !important;
        color: #000 !important;
    }

    .receipt-logo {
        max-width: 22mm !important;
        max-height: 16mm !important;
    }
}

/* Phase 18: UI polish and mobile responsiveness */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { color: #0f172a; }
.min-w-0 { min-width: 0; }
.page-container { padding-bottom: 88px; }

.sidebar .nav-link.active,
.sidebar .nav-link[aria-current="page"] {
    color: #fff;
    background: rgba(37, 99, 235, .35);
}

.card,
.table-card,
.soft-card,
.stat-card {
    transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover,
.table-card:hover,
.soft-card:hover,
.stat-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(15,23,42,.10);
}

.table-responsive {
    border-radius: 16px;
}

.table th {
    white-space: nowrap;
    font-size: .82rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: .03em;
}

.form-control,
.form-select,
.btn {
    border-radius: 12px;
}

.btn {
    font-weight: 600;
}

.mobile-overlay {
    display: none;
}

.mobile-bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1040;
    background: #fff;
    border-top: 1px solid #e2e8f0;
    box-shadow: 0 -8px 24px rgba(15,23,42,.08);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 8px 6px max(8px, env(safe-area-inset-bottom));
}

.mobile-bottom-nav a {
    color: #64748b;
    text-decoration: none;
    text-align: center;
    font-size: 11px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    align-items: center;
    justify-content: center;
}

.mobile-bottom-nav a i {
    font-size: 19px;
}

.mobile-bottom-nav a:hover,
.mobile-bottom-nav a.active {
    color: var(--primary);
}

@media (min-width: 901px) {
    .page-container { padding-bottom: 1.5rem; }
}

@media (max-width: 992px) {
    .app-shell { display: block; }
    .sidebar {
        position: fixed;
        width: 290px;
        max-width: 86vw;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-105%);
        transition: transform .22s ease;
        z-index: 1050;
        border-top-right-radius: 24px;
        border-bottom-right-radius: 24px;
    }
    body.sidebar-open .sidebar {
        transform: translateX(0);
    }
    body.sidebar-open .mobile-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, .48);
        z-index: 1045;
    }
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    .topbar {
        padding: 14px 16px;
    }
    .stat-card,
    .soft-card,
    .table-card {
        border-radius: 18px;
    }
    .pos-cart {
        position: static;
    }
}

@media (max-width: 576px) {
    body { font-size: 14px; }
    .container-fluid { padding-left: 12px; padding-right: 12px; }
    .topbar h5 { font-size: 1rem; }
    .user-actions .btn { padding: 6px 10px; }
    .stat-icon { width: 42px; height: 42px; border-radius: 14px; font-size: 19px; }
    .stat-card .card-body,
    .soft-card .card-body,
    .table-card { padding: 14px; }
    .table { font-size: 13px; }
    .btn-group,
    .input-group { flex-wrap: wrap; }
}