/* ════════════════════════════════════════════════════════════════════════
   FastNestedGrid — World-class keyboard-first nested grid editor
   Modern, clean, accessible, fast
   ════════════════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties (scoped, Bootstrap-aware for theme compat) ── */
.fng-wrap {
    --fng-accent: var(--bs-primary, #3b82f6);
    --fng-accent-hover: #2563eb;
    --fng-accent-subtle: rgba(59, 130, 246, 0.08);
    --fng-accent-glow: rgba(59, 130, 246, 0.25);
    --fng-green: #10b981;
    --fng-green-hover: #059669;
    --fng-red: #ef4444;
    --fng-red-hover: #dc2626;
    --fng-amber: #f59e0b;
    --fng-surface: var(--bs-body-bg, #ffffff);
    --fng-surface-alt: var(--bs-tertiary-bg, #f8fafc);
    --fng-surface-hover: var(--bs-secondary-bg, #f1f5f9);
    --fng-border: var(--bs-border-color, #e2e8f0);
    --fng-border-strong: var(--bs-border-color-translucent, #cbd5e1);
    --fng-text: var(--bs-body-color, #1e293b);
    --fng-text-secondary: var(--bs-secondary-color, #64748b);
    --fng-text-muted: var(--bs-tertiary-color, #94a3b8);
    --fng-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --fng-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --fng-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12), 0 4px 10px rgba(0, 0, 0, 0.06);
    --fng-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.18);
    --fng-radius: 8px;
    --fng-radius-sm: 5px;
    --fng-radius-lg: 12px;
    --fng-transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);

    /* Container layout */
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    border: 1px solid var(--fng-border);
    border-radius: var(--fng-radius);
    overflow: hidden;
    background: var(--fng-surface);
    box-shadow: var(--fng-shadow);
    transition: box-shadow var(--fng-transition);
}

.fng-wrap:focus-within {
    box-shadow: var(--fng-shadow), 0 0 0 2px var(--fng-accent-glow);
}

/* ── Validation Alert ───────────────────────────────────────────────── */
.fng-alert {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 14px;
    background: linear-gradient(135deg, #fef3c7, #fffbeb);
    border-bottom: 1px solid #fcd34d;
    animation: fng-slideDown 0.3s ease-out;
}

.fng-alert-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-size: 0.82rem;
    font-weight: 600;
    color: #92400e;
    line-height: 1.5;
}

.fng-alert-x {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: #b45309;
    font-size: 0.85rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--fng-transition);
    line-height: 1;
}

.fng-alert-x:hover {
    background: rgba(180, 83, 9, 0.12);
}

@keyframes fng-slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Grid Core ──────────────────────────────────────────────────────── */
.fng-grid {
    flex: 1;
    min-height: 180px;
    border: none !important;
    border-radius: 0 !important;
}

.fng-grid .dxbl-grid-table {
    width: 100% !important;
}

/* Header styling */
.fng-grid .dxbl-grid-header-row th,
.fng-grid .dxbl-grid-header-cell {
    background: var(--fng-surface-alt) !important;
    color: var(--fng-text-secondary) !important;
    font-weight: 700 !important;
    font-size: 0.75rem !important;
    text-transform: uppercase !important;
    letter-spacing: 0.04em !important;
    padding-top: 10px !important;
    padding-bottom: 10px !important;
    border-bottom: 2px solid var(--fng-border) !important;
    white-space: nowrap;
    user-select: none;
}

/* Data rows */
.fng-row {
    transition: background var(--fng-transition);
    cursor: pointer;
    border-bottom: 1px solid var(--fng-border) !important;
}

.fng-row:hover {
    background: var(--fng-accent-subtle) !important;
}

/* Selected / focused row */
.fng-grid .dxbl-grid-table tr.dxbl-grid-focused-row,
.fng-grid tr.dxbl-grid-focused-row {
    background: var(--fng-accent-subtle) !important;
    box-shadow: inset 3px 0 0 0 var(--fng-accent) !important;
}

/* Cell padding */
.fng-grid td {
    padding: 7px 12px !important;
    font-size: 0.875rem !important;
    vertical-align: middle !important;
    color: var(--fng-text) !important;
}

/* Alternating row hint */
.fng-grid tr:nth-child(even) .fng-row {
    background: var(--fng-surface-alt);
}

/* ── Edit Row ───────────────────────────────────────────────────────── */
.fng-edit-row {
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.04), rgba(59, 130, 246, 0.01)) !important;
    box-shadow: inset 4px 0 0 0 var(--fng-accent) !important;
    animation: fng-editGlow 0.35s ease-out;
}

.fng-edit-row td {
    padding-top: 5px !important;
    padding-bottom: 5px !important;
}

@keyframes fng-editGlow {
    from { box-shadow: inset 4px 0 0 0 var(--fng-accent), 0 0 0 3px var(--fng-accent-glow) !important; }
    to   { box-shadow: inset 4px 0 0 0 var(--fng-accent) !important; }
}

/* ── Cell Editors ───────────────────────────────────────────────────── */
.fng-editor,
.fng-editor .dxbl-text,
.fng-editor input,
.fng-editor .dxbl-edit-input,
.fng-editor .dxbl-combobox {
    font-size: 0.875rem !important;
    font-weight: 500 !important;
    border-radius: var(--fng-radius-sm) !important;
}

.fng-editor:focus-within {
    box-shadow: 0 0 0 2px var(--fng-accent-glow) !important;
    border-color: var(--fng-accent) !important;
}

/* DxComboBox / DxDropDown inside grid cells — SLIM & ELEGANT */
.fng-edit-row .dxbl-combobox,
.fng-edit-row .dxbl-dropdownedit,
.fng-edit-row .fng-combo {
    background: var(--fng-surface) !important;
    border: 1px solid var(--fng-border) !important;
    border-radius: var(--fng-radius-sm) !important;
    min-height: 28px !important;
    max-height: 30px !important;
    height: 30px !important;
    padding: 0 !important;
    width: 100% !important;
    display: flex !important;
    align-items: center !important;
    overflow: hidden !important;
    cursor: text !important;
    transition: border-color var(--fng-transition), box-shadow var(--fng-transition);
}

.fng-edit-row .dxbl-combobox .dxbl-input-group,
.fng-edit-row .dxbl-dropdownedit .dxbl-input-group {
    width: 100% !important;
    display: flex !important;
    align-items: center !important;
    height: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

.fng-edit-row .dxbl-combobox:focus-within,
.fng-edit-row .dxbl-dropdownedit:focus-within {
    border-color: var(--fng-accent) !important;
    box-shadow: 0 0 0 2px var(--fng-accent-glow) !important;
}

.fng-edit-row .dxbl-combobox .dxbl-edit-input,
.fng-edit-row .dxbl-dropdownedit .dxbl-edit-input,
.fng-combo-input {
    font-size: 0.85rem !important;
    color: var(--fng-text) !important;
    background: transparent !important;
    border: none !important;
    outline: none !important;
    cursor: text !important;
    caret-color: var(--fng-accent) !important;
    flex: 1 !important;
    min-width: 0 !important;
    padding: 2px 8px !important;
    height: 100% !important;
    line-height: 1.3 !important;
}

/* Force combobox inputs to appear editable and remove readonly styling */
.fng-edit-row .dxbl-combobox input,
.fng-edit-row .dxbl-dropdownedit input {
    cursor: text !important;
    user-select: text !important;
    -webkit-user-select: text !important;
    pointer-events: auto !important;
    background-color: transparent !important;
}

/* Remove readonly visual indicator */
.fng-edit-row .dxbl-combobox input[readonly],
.fng-edit-row .dxbl-dropdownedit input[readonly] {
    cursor: text !important;
    background-color: transparent !important;
    opacity: 1 !important;
}

/* ComboBox dropdown button — MINIMAL & ELEGANT */
.fng-combo .dxbl-btn-split,
.fng-combo .dxbl-dropdownedit-button,
.fng-combo .dxbl-combobox-button,
.fng-combo .dxbl-dropdownedit-btn,
.fng-combo .dxbl-btn,
.fng-edit-row .dxbl-dropdownedit-btn {
    border: none !important;
    border-left: 1px solid var(--fng-border) !important;
    background: var(--fng-surface-alt) !important;
    color: var(--fng-text-muted) !important;
    padding: 0 6px !important;
    min-width: 24px !important;
    max-width: 26px !important;
    width: 26px !important;
    height: 100% !important;
    flex-shrink: 0 !important;
    transition: color var(--fng-transition), background var(--fng-transition);
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 0.75rem !important;
}

.fng-combo .dxbl-btn-split:hover,
.fng-combo .dxbl-dropdownedit-button:hover,
.fng-combo .dxbl-combobox-button:hover,
.fng-combo .dxbl-dropdownedit-btn:hover,
.fng-combo .dxbl-btn:hover,
.fng-edit-row .dxbl-dropdownedit-btn:hover {
    color: var(--fng-accent) !important;
    background: var(--fng-accent-subtle) !important;
}

/* ComboBox clear button — minimal */
.fng-combo .dxbl-edit-btn-clear,
.fng-edit-row .dxbl-edit-btn-clear {
    color: var(--fng-text-muted) !important;
    flex-shrink: 0 !important;
    transition: color var(--fng-transition);
    padding: 0 4px !important;
    font-size: 0.7rem !important;
}

.fng-combo .dxbl-edit-btn-clear:hover,
.fng-edit-row .dxbl-edit-btn-clear:hover {
    color: var(--fng-red) !important;
}

/* ComboBox dropdown popup styling */
.dxbl-popup-dropdown,
.dxbl-drop-down-area {
    border-radius: var(--fng-radius) !important;
    border: 1px solid var(--fng-border) !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14), 0 2px 8px rgba(0, 0, 0, 0.08) !important;
    overflow: hidden !important;
    margin-top: 2px !important;
}

.dxbl-listbox {
    border-radius: var(--fng-radius-sm);
    border: none !important;
    overflow: hidden;
    background: var(--fng-surface) !important;
}

.dxbl-listbox .dxbl-listbox-item {
    padding: 8px 12px !important;
    font-size: 0.85rem !important;
    line-height: 1.3 !important;
    transition: background 0.1s ease;
    cursor: pointer !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04) !important;
}

.dxbl-listbox .dxbl-listbox-item:hover,
.dxbl-listbox .dxbl-listbox-item.dxbl-focused {
    background: var(--fng-accent-subtle) !important;
    color: var(--fng-text) !important;
}

.dxbl-listbox .dxbl-listbox-item.dxbl-active {
    background: var(--fng-accent) !important;
    color: #fff !important;
    font-weight: 600 !important;
}

.dxbl-listbox .dxbl-listbox-item:last-child {
    border-bottom: none !important;
}

/* Dropdown popup container */
.dxbl-drop-down-area .dxbl-listbox,
.dxbl-popup .dxbl-listbox,
.dxbl-popup-dropdown .dxbl-listbox {
    max-height: 280px;
    overflow-y: auto;
}

/* DxSpinEdit inside grid cells */
.fng-edit-row .dxbl-spin-edit {
    background: var(--fng-surface) !important;
    border: 1px solid var(--fng-border) !important;
    border-radius: var(--fng-radius-sm) !important;
    transition: border-color var(--fng-transition), box-shadow var(--fng-transition);
    height: 30px !important;
}

.fng-edit-row .dxbl-spin-edit:focus-within {
    border-color: var(--fng-accent) !important;
    box-shadow: 0 0 0 2px var(--fng-accent-glow) !important;
}

.fng-edit-row .dxbl-spin-edit input {
    padding: 2px 8px !important;
    height: 100% !important;
    font-size: 0.85rem !important;
}

/* Numeric right-align */
.fng-num input,
.fng-num .dxbl-edit-input {
    text-align: right !important;
    font-variant-numeric: tabular-nums !important;
}

/* Read-only cells in edit mode */
.fng-ro {
    padding: 4px 8px;
    color: var(--fng-text-secondary);
    font-style: italic;
    font-size: 0.875rem;
}

/* ── Command Column ─────────────────────────────────────────────────── */
.fng-cmd {
    text-align: center !important;
    white-space: nowrap !important;
}

.fng-cmd .btn,
.fng-cmd button,
.fng-cmd .dxbl-grid-edit-inline-save-button,
.fng-cmd .dxbl-grid-edit-inline-cancel-button {
    padding: 3px 8px !important;
    font-size: 0.78rem !important;
    border-radius: var(--fng-radius-sm) !important;
    transition: all var(--fng-transition) !important;
}

/* ── Delete Confirmation Overlay ────────────────────────────────────── */
.fng-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    z-index: 1000;
    animation: fng-fadeIn 0.2s ease-out;
}

@keyframes fng-fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.fng-dialog {
    background: var(--fng-surface);
    border-radius: var(--fng-radius-lg);
    padding: 28px 36px;
    text-align: center;
    box-shadow: var(--fng-shadow-xl);
    min-width: 280px;
    max-width: 360px;
    animation: fng-dialogPop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fng-dialogPop {
    from { opacity: 0; transform: scale(0.92) translateY(8px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.fng-dialog-icon {
    font-size: 2.2rem;
    margin-bottom: 8px;
    opacity: 0.85;
}

.fng-dialog h4 {
    margin: 0 0 6px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--fng-text);
}

.fng-dialog p {
    margin: 0 0 20px;
    font-size: 0.83rem;
    color: var(--fng-text-secondary);
    line-height: 1.5;
}

.fng-dialog-btns {
    display: flex;
    gap: 10px;
    justify-content: center;
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.fng-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 20px;
    border: 1px solid transparent;
    border-radius: var(--fng-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--fng-transition);
    outline: none;
    line-height: 1.3;
}

.fng-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--fng-accent-glow);
}

.fng-btn-ghost {
    background: transparent;
    border-color: var(--fng-border);
    color: var(--fng-text-secondary);
}

.fng-btn-ghost:hover {
    background: var(--fng-surface-hover);
    border-color: var(--fng-border-strong);
    color: var(--fng-text);
}

.fng-btn-red {
    background: var(--fng-red);
    border-color: var(--fng-red);
    color: #fff;
}

.fng-btn-red:hover {
    background: var(--fng-red-hover);
    border-color: var(--fng-red-hover);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

/* ── Bottom Bar (Toolbar) ───────────────────────────────────────────── */
.fng-bar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 7px 14px;
    border-top: 1px solid var(--fng-border);
    background: var(--fng-surface-alt);
    font-size: 0.82rem;
    min-height: 38px;
}

.fng-bar-add {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    border: 1px solid var(--fng-green);
    border-radius: var(--fng-radius-sm);
    background: transparent;
    color: var(--fng-green);
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--fng-transition);
    white-space: nowrap;
}

.fng-bar-add:hover {
    background: var(--fng-green);
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.fng-bar-add:active {
    transform: scale(0.97);
}

.fng-bar-count {
    color: var(--fng-text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.fng-bar-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--fng-accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    animation: fng-badgePulse 1.5s ease-in-out infinite;
}

@keyframes fng-badgePulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.7; }
}

.fng-bar-keys {
    margin-left: auto;
    color: var(--fng-text-muted);
    font-size: 0.75rem;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 3px;
}

/* Keyboard shortcut badges */
.fng-wrap kbd {
    display: inline-block;
    padding: 1px 6px;
    border: 1px solid var(--fng-border-strong);
    border-radius: 4px;
    background: var(--fng-surface);
    color: var(--fng-text-secondary);
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 600;
    box-shadow: 0 1px 0 var(--fng-border-strong);
    line-height: 1.5;
}

/* ── Empty grid placeholder ─────────────────────────────────────────── */
.fng-grid .dxbl-grid-empty-data-area {
    padding: 32px 16px !important;
    text-align: center;
    color: var(--fng-text-muted) !important;
    font-style: italic;
}

/* ── Scrollbar ──────────────────────────────────────────────────────── */
.fng-wrap ::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.fng-wrap ::-webkit-scrollbar-track {
    background: transparent;
}

.fng-wrap ::-webkit-scrollbar-thumb {
    background: var(--fng-border-strong);
    border-radius: 3px;
}

.fng-wrap ::-webkit-scrollbar-thumb:hover {
    background: var(--fng-text-muted);
}

/* Dark theme is handled automatically via Bootstrap --bs-* variables
   inherited in the .fng-wrap custom properties above. */

/* ── Touch / POS Mode ───────────────────────────────────────────────── */
.pos-touch .fng-bar-add {
    padding: 8px 18px;
    font-size: 0.9rem;
}

.pos-touch .fng-row td,
.pos-touch .fng-grid td {
    padding-top: 11px !important;
    padding-bottom: 11px !important;
    font-size: 0.95rem !important;
}

.pos-touch .fng-editor input,
.pos-touch .fng-editor .dxbl-edit-input {
    font-size: 0.95rem !important;
    padding: 8px !important;
}

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .fng-bar-keys {
        display: none;
    }

    .fng-bar {
        gap: 8px;
        padding: 6px 10px;
    }

    .fng-dialog {
        min-width: auto;
        margin: 0 16px;
        padding: 20px 24px;
    }
}

/* ── Print ──────────────────────────────────────────────────────────── */
@media print {
    .fng-bar,
    .fng-alert,
    .fng-overlay,
    .fng-cmd {
        display: none !important;
    }

    .fng-wrap {
        box-shadow: none;
        border: 1px solid #000;
    }
}