:root {
    --sidebar-w: 260px;
    --sidebar-w-collapsed: 76px;
    --cart-w: 400px;
    --bg: #f4f5f7;
    --surface: #ffffff;
    --border: #e5e7eb;
    --text: #1f2937;
    --text-muted: #6b7280;
    --primary: #c81e1e;
    --primary-dark: #a51616;
    --primary-tint: #fdeaea;
    --accent: #ffc72c;
    --accent-dark: #e0a300;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.07);
    --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.12);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.16);
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.5;
}
a { text-decoration: none; }
h1, h2, h3 { color: var(--text); }
button, input, select { font-family: inherit; }

/* ---------- App shell: left sidebar ---------- */
.app-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w);
    background: linear-gradient(180deg, #7a1414, #5c0f0f 55%, #440b0b);
    color: #f7e3d0;
    display: flex;
    flex-direction: column;
    padding: 16px 14px;
    z-index: 200;
    overflow-y: auto;
    overflow-x: hidden;
    transition: width 0.18s ease;
}
.sidebar-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.sidebar-brand {
    font-weight: 800;
    font-size: 21px;
    color: var(--accent);
    text-shadow: 0 1px 6px rgba(0,0,0,0.35);
    padding: 8px 6px;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    flex: 1;
}
.sidebar-brand-short { display: none; }
.sidebar-collapse-btn {
    background: rgba(255,255,255,0.12); border: none; color: #fff; cursor: pointer;
    width: 30px; height: 30px; border-radius: 8px; font-size: 13px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.sidebar-collapse-btn:hover { background: rgba(255,255,255,0.2); }
.collapse-icon-right { display: none; }
.sidebar-section-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #e3b3a8;
    padding: 14px 10px 8px;
    white-space: nowrap;
    overflow: hidden;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 12px;
    border-radius: var(--radius-sm);
    color: #f7e3d0;
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 3px;
    transition: background 0.12s ease, color 0.12s ease;
    white-space: nowrap;
    overflow: hidden;
}
.sidebar-icon { font-size: 18px; width: 22px; text-align: center; flex-shrink: 0; }
.sidebar-text { overflow: hidden; text-overflow: ellipsis; }
.sidebar-link:hover { background: rgba(255,255,255,0.1); color: #fff; }
.sidebar-link.active { background: var(--accent); color: #3a1d00; font-weight: 700; box-shadow: var(--shadow-sm); }
.sidebar-link.active .sidebar-icon { filter: none; }
.sidebar-logout-btn {
    width: 100%; background: none; border: none; cursor: pointer; text-align: left;
    font-family: inherit;
}
.sidebar-footer form { margin: 0; }
.sidebar-footer {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

/* Collapsed desktop sidebar */
body.sidebar-collapsed .app-sidebar { width: var(--sidebar-w-collapsed); }
body.sidebar-collapsed .sidebar-brand-full { display: none; }
body.sidebar-collapsed .sidebar-brand-short { display: inline; }
body.sidebar-collapsed .sidebar-brand { text-align: center; padding: 8px 0; }
body.sidebar-collapsed .sidebar-top { flex-direction: column; gap: 10px; }
body.sidebar-collapsed .sidebar-section-label,
body.sidebar-collapsed .sidebar-text { display: none; }
body.sidebar-collapsed .sidebar-link { justify-content: center; padding: 13px 0; }
body.sidebar-collapsed .collapse-icon-left { display: none; }
body.sidebar-collapsed .collapse-icon-right { display: inline; }
body.sidebar-collapsed .content-with-sidebar { margin-left: var(--sidebar-w-collapsed); }

.mobile-topbar {
    display: none;
    align-items: center;
    gap: 14px;
    background: linear-gradient(180deg, #7a1414, #5c0f0f);
    color: #fff;
    padding: 14px 18px;
    position: sticky;
    top: 0;
    z-index: 150;
}
.mobile-topbar .brand { font-weight: 800; font-size: 18px; color: var(--accent); text-shadow: 0 1px 6px rgba(0,0,0,0.35); flex: 1; }

.connection-status, .sidebar-connection-status {
    font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px;
    white-space: nowrap;
}
.connection-status.is-online, .sidebar-connection-status.is-online { background: rgba(22,163,74,0.18); color: #4ade80; }
.connection-status.is-offline, .sidebar-connection-status.is-offline { background: rgba(220,38,38,0.2); color: #fca5a5; }
.sidebar-connection-status {
    margin: 4px 10px 10px; text-align: center;
}
.sync-banner {
    margin: 0 10px 12px; padding: 8px 10px; border-radius: var(--radius-sm);
    font-size: 12px; font-weight: 600; text-align: center; line-height: 1.4;
}
.sync-banner.syncing { background: rgba(37,99,235,0.18); color: #93c5fd; }
.sync-banner.success { background: rgba(22,163,74,0.18); color: #4ade80; }
.sync-banner.error { background: rgba(220,38,38,0.2); color: #fca5a5; }
.hamburger-btn {
    background: rgba(255,255,255,0.1); border: none; color: #fff; font-size: 20px; cursor: pointer;
    padding: 6px 10px; border-radius: 8px;
}
.sidebar-backdrop {
    display: none;
    position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 190;
}

.content { padding: 26px 32px; }
.content-with-sidebar { margin-left: var(--sidebar-w); transition: margin-left 0.18s ease; }
.content h2 { font-size: 22px; margin-top: 0; }

/* Login */
.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; padding: 16px;
    background-size: cover; background-position: center; background-repeat: no-repeat;
    position: relative;
}
.login-overlay {
    position: fixed; inset: 0;
    background: linear-gradient(160deg, rgba(90, 10, 10, 0.55), rgba(30, 5, 5, 0.8));
    z-index: 0;
}
/* Generic platform login (no client branding — shown before we know which
   tenant is signing in, so it can't show any one restaurant's identity). */
.login-body-generic {
    background: linear-gradient(160deg, #1e293b, #0f172a);
}
.login-overlay-generic {
    background: none;
}
.login-brand.login-brand-generic {
    color: #fff;
    text-shadow: 0 2px 10px rgba(0,0,0,0.35);
}
.login-box {
    position: relative; z-index: 1;
    background: rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 44px 40px;
    border-radius: 20px;
    width: 100%; max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
    text-align: center;
}
.login-brand {
    font-size: 34px; font-weight: 800; color: var(--accent);
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    letter-spacing: 0.02em;
}
.login-subtitle {
    color: rgba(255,255,255,0.85); font-size: 14px; margin-top: 6px; margin-bottom: 30px;
    text-transform: uppercase; letter-spacing: 0.14em;
}
.login-box label { display: block; margin-top: 16px; font-size: 13px; color: rgba(255,255,255,0.85); text-align: left; font-weight: 600; }
.login-box input {
    width: 100%; padding: 13px 15px; margin-top: 6px; border: 1px solid rgba(255,255,255,0.35);
    border-radius: var(--radius-sm); font-size: 16px;
    background: rgba(255,255,255,0.94); color: var(--text);
}
.login-box input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.login-body-generic .login-box input:focus { outline-color: #60a5fa; }
.login-box .error-text { text-align: left; }
.login-box button {
    margin-top: 26px; width: 100%; padding: 15px; background: var(--accent); color: #3a1d00;
    border: none; border-radius: var(--radius-sm); font-size: 17px; cursor: pointer; font-weight: 700;
    letter-spacing: 0.02em;
}
.login-box button:hover { background: #ffd35c; }
.login-body-generic .login-box button { background: #2563eb; color: #fff; }
.login-body-generic .login-box button:hover { background: #1d4ed8; }

.offline-mode-notice {
    background: rgba(245,158,11,0.15); color: #92400e; border: 1px solid rgba(245,158,11,0.35);
    padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; font-weight: 600;
    margin-bottom: 16px; text-align: center;
}

/* ---------- POS layout: menu (top categories + grid) + cart ---------- */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr var(--cart-w);
    gap: 22px;
    align-items: start;
}

.menu-pane { min-width: 0; }

.category-topbar {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    padding: 4px 4px 14px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border);
    scrollbar-width: thin;
}
.category-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    user-select: none;
    color: var(--text);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
    flex-shrink: 0;
    transition: background 0.12s ease, color 0.12s ease, transform 0.1s ease;
}
.category-tab:hover { background: var(--primary-tint); transform: translateY(-1px); }
.category-tab.active { background: var(--primary); color: #fff; box-shadow: var(--shadow-md); }
.category-tab-count {
    font-size: 12px; color: var(--text-muted); background: var(--bg);
    padding: 2px 8px; border-radius: 10px; min-width: 22px; text-align: center; font-weight: 700;
}
.category-tab.active .category-tab-count { background: rgba(255,255,255,0.28); color: #fff; }

.cart-pane {
    background: var(--surface); border-radius: var(--radius); padding: 22px;
    position: sticky; top: 26px; max-height: calc(100vh - 52px); overflow-y: auto;
    box-shadow: var(--shadow-md);
}
.cart-pane h2 { margin-top: 0; margin-bottom: 16px; font-size: 19px; }

.item-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px;
}
.item-card {
    background: var(--surface); border-radius: var(--radius); padding: 14px; cursor: default;
    box-shadow: var(--shadow-sm); transition: box-shadow 0.15s ease, transform 0.1s ease;
}
.item-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.item-card .item-image {
    width: 100%; height: 125px; object-fit: cover; border-radius: var(--radius-sm); margin-bottom: 10px;
    background: var(--bg); cursor: pointer; transition: opacity 0.12s ease;
}
.item-card .item-image:hover { opacity: 0.88; }
/* Placeholder ("no photo") images never crop, regardless of the card's
   aspect ratio — only real uploaded photos should fill/crop the frame. */
.item-card .item-image.no-photo,
.manage-item-card img.no-photo,
#item-image-preview.no-photo { object-fit: contain; }
.item-card .item-name { font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.item-card .item-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.item-card .variant-btn {
    display: block; width: 100%; text-align: left; padding: 10px 12px; margin-top: 6px;
    background: var(--primary-tint); border: none; border-radius: var(--radius-sm); font-size: 14px; cursor: pointer;
    font-weight: 600; color: var(--primary-dark); transition: background 0.12s ease;
}
.item-card .variant-btn:hover { background: #fbd9c9; }
.item-card .variant-btn-disabled,
.item-card .variant-btn-disabled:hover {
    background: var(--bg); color: var(--text-muted); cursor: not-allowed; text-decoration: line-through;
}

.order-meta { margin-bottom: 14px; }
.order-meta label { display: block; font-size: 13px; color: var(--text-muted); margin-top: 10px; font-weight: 600; }
.order-meta select, .order-meta input {
    width: 100%; padding: 10px; margin-top: 4px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 15px;
}

.cart-lines { border-top: 1px solid var(--border); margin: 14px 0; }
.cart-line {
    display: flex; justify-content: space-between; align-items: center;
    padding: 11px 0; border-bottom: 1px solid #f0f0f0; font-size: 14px; gap: 8px;
}
.cart-line .cart-line-name { flex: 1; min-width: 0; font-weight: 500; }
.cart-line .cart-line-controls { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.cart-line button.qty-btn {
    width: 28px; height: 28px; border: 1px solid var(--border); background: var(--surface);
    border-radius: var(--radius-sm); cursor: pointer; font-size: 15px; font-weight: 600;
}
.cart-line button.qty-btn:hover { background: var(--bg); }
.cart-line .remove-line { color: var(--danger); cursor: pointer; margin-left: 8px; font-size: 15px; }
.empty-cart-note { color: #9ca3af; font-size: 14px; padding: 18px 0; text-align: center; }

.discount-row { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; }
.discount-row label { font-size: 13px; color: var(--text-muted); white-space: nowrap; font-weight: 600; }
.discount-row select, .discount-row input {
    padding: 9px; border: 1px solid var(--border); border-radius: var(--radius-sm); width: 100%; font-size: 14px;
}

.totals { border-top: 1px solid var(--border); padding-top: 12px; margin-bottom: 14px; }
.totals-row { display: flex; justify-content: space-between; font-size: 14px; padding: 4px 0; color: var(--text-muted); }
.totals-grand {
    font-weight: 800; font-size: 19px; border-top: 1px solid var(--border); margin-top: 8px; padding-top: 10px;
    color: var(--text);
}

.payment-row {
    display: flex; align-items: center; gap: 8px; margin-bottom: 16px; font-size: 14px; font-weight: 600;
    color: var(--text-muted); background: var(--bg); padding: 10px 12px; border-radius: var(--radius-sm);
}

.primary-btn {
    width: 100%; padding: 15px; background: var(--success); color: #fff; border: none;
    border-radius: var(--radius-sm); font-size: 16px; font-weight: 700; cursor: pointer;
    transition: background 0.12s ease;
}
.primary-btn:hover:not(:disabled) { background: #15803d; }
.primary-btn:disabled { background: #9ca3af; cursor: not-allowed; }
.error-text { color: var(--danger); font-size: 14px; margin-top: 8px; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(15, 23, 42, 0.55);
    display: flex; align-items: center; justify-content: center; z-index: 300; padding: 16px;
}
.modal {
    background: var(--surface); border-radius: var(--radius); padding: 26px; width: 420px;
    max-width: 100%; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg);
    position: relative;
}
.modal h3 { font-size: 19px; margin-top: 0; }
.modal-close-btn {
    position: absolute; top: 14px; right: 14px; width: 30px; height: 30px;
    border: none; background: var(--bg); color: var(--text-muted); border-radius: 50%;
    font-size: 16px; line-height: 1; cursor: pointer; display: flex; align-items: center;
    justify-content: center; padding: 0; transition: background 0.12s ease, color 0.12s ease;
}
.modal-close-btn:hover { background: var(--border); color: var(--text); }
.modal-actions { display: flex; gap: 10px; margin-top: 20px; }
.modal-actions button {
    flex: 1; padding: 13px; border-radius: var(--radius-sm); border: 1px solid var(--border);
    background: var(--surface); color: var(--text); cursor: pointer; font-size: 15px; font-weight: 600;
}
.modal-actions button:hover { background: var(--bg); }
.modal-actions .primary-btn { border: none; width: auto; flex: 1; background: var(--success); color: #fff; }
.modal-actions .primary-btn:hover:not(:disabled) { background: #15803d; }
.modal-actions .danger-btn { flex: 1; background: var(--danger); color: #fff; border: none; }
.modal-actions .danger-btn:hover { background: var(--primary-dark); }

.receipt-modal h3 { text-align: center; margin-bottom: 4px; }
.pending-sync-badge {
    text-align: center; background: rgba(245,158,11,0.15); color: #b45309;
    font-size: 12px; font-weight: 700; padding: 6px 10px; border-radius: var(--radius-sm);
    margin-bottom: 10px;
}
.receipt-line { display: flex; justify-content: space-between; font-size: 14px; padding: 4px 0; }
.receipt-divider { border-top: 1px dashed #cbd5e1; margin: 10px 0; }
.receipt-meta { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }

/* Kitchen */
.kitchen-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 8px; }
.auto-refresh-note { font-size: 13px; color: #9ca3af; }
.kitchen-board { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.kitchen-card { background: var(--surface); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow-sm); }
.kitchen-card.status-pending { border-left: 5px solid var(--warning); }
.kitchen-card.status-in_progress { border-left: 5px solid var(--primary); }
.kitchen-card.status-pending_sync { border-left: 5px dashed #9ca3af; opacity: 0.85; }
.pending-sync-note { font-size: 12px; color: var(--text-muted); font-style: italic; }
.kitchen-card-header { display: flex; justify-content: space-between; font-weight: 700; font-size: 16px; margin-bottom: 8px; }
.kitchen-card-meta { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.kitchen-line { font-size: 14px; padding: 3px 0; }
.kitchen-actions { margin-top: 12px; display: flex; gap: 8px; }
.kitchen-actions button {
    flex: 1; padding: 11px; border-radius: var(--radius-sm); border: none; cursor: pointer; font-size: 13px; color: #fff;
    font-weight: 700;
}
.btn-progress { background: var(--primary); }
.btn-complete { background: var(--success); }
.btn-cancel { background: var(--danger); }

/* History */
.history-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.history-filters { display: flex; gap: 18px; flex-wrap: wrap; }
.history-filters label { font-size: 14px; color: var(--text-muted); font-weight: 600; }
.history-filters input, .history-filters select {
    margin-left: 8px; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 14px;
}
.table-scroll { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.history-table { width: 100%; border-collapse: collapse; background: var(--surface); min-width: 600px; }
.history-table th, .history-table td { padding: 14px 16px; text-align: left; font-size: 14px; border-bottom: 1px solid #f0f0f0; }
.history-table th { background: #f9fafb; font-weight: 700; color: var(--text-muted); }
.status-badge { padding: 4px 10px; border-radius: 12px; font-size: 12px; color: #fff; font-weight: 700; }
.status-badge.pending { background: var(--warning); }
.status-badge.in_progress { background: var(--primary); }
.status-badge.completed { background: var(--success); }
.status-badge.cancelled { background: var(--danger); }
.status-badge.pending_sync { background: #9ca3af; }
.pending-sync-row { background: #fafafa; }
.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 14px; font-weight: 700; }

/* Dashboard */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.stat-card { background: var(--surface); border-radius: var(--radius); padding: 24px; text-align: center; box-shadow: var(--shadow-sm); }
.stat-label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 10px; font-weight: 600; }
.stat-value { display: block; font-size: 30px; font-weight: 800; }

/* Inventory */
.inventory-tabs {
    display: flex; gap: 8px; margin-bottom: 20px; border-bottom: 1px solid var(--border);
}
.inventory-tab {
    padding: 12px 18px; cursor: pointer; font-size: 14px; font-weight: 600; color: var(--text-muted);
    border-bottom: 3px solid transparent; margin-bottom: -1px; transition: color 0.12s ease;
}
.inventory-tab:hover { color: var(--text); }
.inventory-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.inventory-tab-panel h3 { font-size: 15px; margin: 20px 0 10px; }
.inventory-tab-panel .stat-cards { margin-bottom: 8px; }

.adjust-form-card {
    background: var(--surface); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm);
    max-width: 460px;
}
.adjust-form-card label { display: block; margin-top: 14px; font-size: 13px; color: var(--text-muted); font-weight: 600; }
.adjust-form-card select, .adjust-form-card input[type="text"], .adjust-form-card input[type="number"] {
    width: 100%; padding: 10px; margin-top: 4px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 14px;
}
.current-stock-display {
    font-size: 22px; font-weight: 800; margin-top: 4px; padding: 8px 0;
}
.field-hint { font-size: 12px; color: var(--text-muted); margin: 6px 0 0; }
.adjust-form-card .primary-btn { margin-top: 20px; }

/* Manage Menu */
.manage-layout { display: grid; grid-template-columns: 300px 1fr; gap: 20px; align-items: start; }
.category-pane { background: var(--surface); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-sm); }
.items-pane { background: var(--surface); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-sm); }
.pane-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.pane-header h2 { margin: 0; font-size: 18px; }
.small-btn {
    padding: 9px 15px; background: var(--primary); color: #fff; border: none; border-radius: var(--radius-sm);
    cursor: pointer; font-size: 13px; font-weight: 700;
}
.small-btn:hover:not(:disabled) { background: var(--primary-dark); }
.small-btn:disabled { background: #9ca3af; cursor: not-allowed; }
.danger-btn { background: var(--danger); color: #fff; border: none; border-radius: var(--radius-sm); padding: 13px; cursor: pointer; font-size: 15px; font-weight: 600; }

.category-list { display: flex; flex-direction: column; gap: 4px; }
.category-row {
    display: flex; justify-content: space-between; align-items: center; padding: 13px;
    border-radius: var(--radius-sm); cursor: pointer; font-size: 15px; gap: 8px;
}
.category-row:hover { background: #f3f4f6; }
.category-row.active { background: var(--primary-tint); font-weight: 700; }
.category-row.inactive { opacity: 0.5; }
.category-row .cat-count { font-size: 13px; color: var(--text-muted); }
.category-row-actions { display: flex; gap: 10px; flex-shrink: 0; }
.category-row-actions span { cursor: pointer; font-size: 13px; color: var(--primary); font-weight: 600; }
.category-row-actions .del-cat { color: var(--danger); }

.manage-items-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px;
}
.manage-item-card {
    border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; cursor: pointer; position: relative;
    transition: box-shadow 0.12s ease;
}
.manage-item-card:hover { box-shadow: var(--shadow-md); }
.manage-item-card img { width: 100%; height: 110px; object-fit: cover; border-radius: var(--radius-sm); margin-bottom: 8px; background: var(--bg); }
.manage-item-card .mi-name { font-weight: 700; font-size: 14px; }
.manage-item-card .mi-price { font-size: 13px; color: var(--text-muted); margin-top: 5px; }
.manage-item-card.unavailable { opacity: 0.5; }
.manage-item-card .unavailable-badge {
    position: absolute; top: 8px; right: 8px; background: var(--danger); color: #fff;
    font-size: 11px; padding: 3px 7px; border-radius: 4px; font-weight: 700;
}

.item-modal { width: 460px; }
.item-modal label { display: block; margin-top: 12px; font-size: 13px; color: var(--text-muted); font-weight: 600; }
.item-modal input[type="text"], .item-modal input[type="file"] {
    width: 100%; padding: 10px; margin-top: 4px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 15px;
}
#item-image-preview { width: 100%; max-height: 150px; object-fit: cover; border-radius: var(--radius-sm); margin-top: 8px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 14px; }
.checkbox-label input { width: auto; }

.variant-row-wrap { margin-top: 10px; padding-bottom: 10px; border-bottom: 1px dashed var(--border); }
.variant-row-wrap:last-child { border-bottom: none; }
.variant-row { display: flex; gap: 8px; align-items: center; }
.variant-row input[type="text"] { flex: 2; margin-top: 0; }
.variant-row input[type="number"] { flex: 1; padding: 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 14px; }
.variant-row .remove-variant { color: var(--danger); cursor: pointer; font-size: 16px; padding: 0 6px; }
.variant-stock-row { display: flex; gap: 8px; align-items: center; margin-top: 6px; }
.variant-track-label { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-muted); font-weight: 500; white-space: nowrap; margin: 0; }
.variant-track-label input { width: auto; margin: 0; }
.variant-stock-row input[type="number"] {
    flex: 1; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 13px; margin-top: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
    :root { --cart-w: 340px; }
}

@media (max-width: 1024px) {
    :root { --sidebar-w: 230px; --cart-w: 320px; }
    .content { padding: 20px; }
    .pos-layout { gap: 14px; }
    .manage-layout { grid-template-columns: 240px 1fr; }
}

@media (max-width: 900px) {
    .app-sidebar {
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        width: 270px !important;
    }
    .app-sidebar.open { transform: translateX(0); }
    body.sidebar-collapsed .app-sidebar { width: 270px; }
    .sidebar-collapse-btn { display: none; }
    .content-with-sidebar,
    body.sidebar-collapsed .content-with-sidebar { margin-left: 0; }
    .mobile-topbar { display: flex; }
    .sidebar-backdrop.open { display: block; }

    .pos-layout { grid-template-columns: 1fr; }
    .cart-pane { position: static; max-height: none; }

    .manage-layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    html { font-size: 15px; }
    .content { padding: 16px; }
    .item-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
    .modal { padding: 18px; }
    .history-filters { width: 100%; }
    .history-filters label { display: block; margin-bottom: 8px; }
    .history-filters input, .history-filters select { margin-left: 0; width: 100%; margin-top: 4px; }
    .login-box { padding: 32px 26px; }
    .login-brand { font-size: 28px; }
}

@media print {
    .app-sidebar, .mobile-topbar, .modal-actions { display: none !important; }
    .content-with-sidebar { margin-left: 0; }
    .modal-overlay { position: static; background: none; }
    .modal { box-shadow: none; width: 100%; }
}