* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --border: #2a2d3a;
    --text: #e4e4e7;
    --text-muted: #71717a;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --success: #22c55e;
    --danger: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.screen { display: flex; }
.hidden { display: none !important; }

/* ---- Auth Screen ---- */
#auth-screen {
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.auth-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-container h1 { font-size: 1.5rem; margin-bottom: 8px; }
.auth-container p { color: var(--text-muted); margin-bottom: 24px; }

#login-form { display: flex; flex-direction: column; gap: 12px; }

#login-form input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text);
    font-size: 0.95rem;
}

#login-form input:focus { outline: none; border-color: var(--accent); }

button {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 20px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s;
}
button:hover { background: var(--accent-hover); }

.error { color: var(--danger); margin-top: 12px; font-size: 0.85rem; }

/* ---- Dashboard Layout ---- */
#dashboard-screen { flex-direction: column; min-height: 100vh; }

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-left h1 { font-size: 1.25rem; }

.header-right { display: flex; align-items: center; gap: 16px; }
.header-right span { color: var(--text-muted); font-size: 0.85rem; }

#logout-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 16px;
    font-size: 0.85rem;
}
#logout-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ---- Company Filter Tabs ---- */
.company-filter-bar {
    padding: 12px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.company-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.company-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 20px;
    transition: all 0.2s;
}

.company-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.company-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.company-btn[data-company]:not([data-company="all"]).active {
    background: var(--co-color, var(--accent));
    border-color: var(--co-color, var(--accent));
}

/* ---- Controls ---- */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.date-range { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.date-range label { font-size: 0.85rem; color: var(--text-muted); }

.date-range input[type="date"] {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--text);
    font-size: 0.85rem;
}

.date-range button { padding: 8px 16px; font-size: 0.85rem; }

#refresh-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.last-updated { font-size: 0.8rem; color: var(--text-muted); }

/* ---- Summary Cards ---- */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    padding: 0 24px 16px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.card h3 {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.card span { font-size: 1.5rem; font-weight: 700; }

/* ---- Company Breakdown (All-view) ---- */
.company-breakdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    padding: 0 24px 16px;
}

.company-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 20px;
}

.company-card h4 { font-size: 0.95rem; margin-bottom: 12px; }

.company-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.company-stats div { display: flex; flex-direction: column; gap: 2px; }
.stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-value { font-size: 1rem; font-weight: 600; }

/* ---- Items Sold Summary ---- */
.items-summary {
    padding: 0 24px 16px;
}

.items-summary h2 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text);
}

.items-summary-list {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}

.item-row {
    display: grid;
    grid-template-columns: 1fr 110px 110px;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
}

.item-row:last-child {
    border-bottom: none;
}

.item-row:hover {
    background: rgba(99, 102, 241, 0.05);
}

.item-row.item-head {
    background: var(--bg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
}

.item-row.item-head:hover {
    background: var(--bg);
}

.item-name {
    font-size: 0.95rem;
    color: var(--text);
}

.item-qty {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    text-align: right;
}

.item-stock {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--success);
    text-align: right;
}

.item-stock.low {
    color: var(--danger);
}

.item-stock.untracked {
    color: var(--text-muted);
    font-weight: 500;
}

.item-row.item-head .item-name,
.item-row.item-head .item-qty,
.item-row.item-head .item-stock {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
}

.item-row.item-head .sortable {
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
}

.item-row.item-head .sortable:hover {
    color: var(--text);
}

.sort-icon {
    display: inline-block;
    margin-left: 4px;
    font-size: 0.65rem;
    opacity: 0.45;
}

.sort-icon.active {
    opacity: 1;
    color: var(--accent);
}

/* ---- Product Table ---- */
.table-container { padding: 0 24px 24px; overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}

thead th {
    background: var(--bg);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

thead th.sortable {
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
}

thead th.sortable:hover { color: var(--text); }

tbody td {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

tbody tr:hover { background: rgba(99, 102, 241, 0.05); }

.company-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.loading {
    text-align: center;
    color: var(--text-muted);
    padding: 40px !important;
}

/* ---- Stock List View ---- */
.stock-list-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0 24px 16px;
    gap: 12px;
}

.stock-list-header h2 {
    font-size: 1.2rem;
    color: var(--text);
}

#stock-list-search {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 14px;
    color: var(--text);
    font-size: 0.9rem;
    min-width: 260px;
}

#stock-list-search:focus {
    outline: none;
    border-color: var(--accent);
}

#stock-list-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

#stock-list-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

thead th.num,
tbody td.num {
    text-align: right;
}

.stock-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.stock-badge.ok {
    background: rgba(34, 197, 94, 0.12);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.35);
}

.stock-badge.low {
    background: rgba(234, 179, 8, 0.12);
    color: #eab308;
    border: 1px solid rgba(234, 179, 8, 0.35);
}

.stock-badge.out {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.35);
}

.stock-badge.untracked {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* Status-aware colour for the Stock Qty value in the stock list table */
.stock-qty-val { font-weight: 600; }
.stock-qty-val.ok { color: var(--success); }
.stock-qty-val.low { color: #eab308; }
.stock-qty-val.out { color: var(--danger); }
.stock-qty-val.untracked { color: var(--text-muted); font-weight: 500; }

/* ---- Reorder Suggestions ---- */
.reorder-panel {
    padding: 8px 24px 32px;
}

.reorder-header h2 {
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 4px;
}

.reorder-sub {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 16px;
    max-width: 720px;
}

.reorder-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    align-items: end;
}

.reorder-controls label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
}

.reorder-controls label small {
    text-transform: none;
    letter-spacing: 0;
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.72rem;
    opacity: 0.75;
}

.reorder-controls input[type="number"] {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
    width: 100%;
}

.reorder-controls input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
}

.reorder-controls button {
    padding: 10px 16px;
    font-size: 0.85rem;
    align-self: stretch;
}

.reorder-actions {
    display: flex;
    gap: 8px;
    align-self: stretch;
}

.reorder-actions button {
    flex: 1;
    padding: 10px 12px;
    font-size: 0.85rem;
}

.reorder-actions button.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}
.reorder-actions button.secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: transparent;
}

.reorder-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.reorder-summary .chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 12px;
}

.reorder-summary .chip strong {
    color: var(--text);
    font-weight: 600;
    margin-left: 4px;
}

.reorder-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.72rem;
    font-weight: 600;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.reorder-badge.order-now {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.35);
}
.reorder-badge.reorder-soon {
    background: rgba(234, 179, 8, 0.12);
    color: #eab308;
    border: 1px solid rgba(234, 179, 8, 0.35);
}
.reorder-badge.ok {
    background: rgba(34, 197, 94, 0.12);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.35);
}
.reorder-badge.out {
    background: rgba(239, 68, 68, 0.22);
    color: #fff;
    border: 1px solid rgba(239, 68, 68, 0.5);
}

.reorder-suggested {
    font-weight: 700;
    color: var(--text);
}
.reorder-suggested.none { color: var(--text-muted); font-weight: 400; }

@media (max-width: 640px) {
    .reorder-panel { padding: 8px 14px 24px; }
    .reorder-header h2 { font-size: 1.05rem; }
    .reorder-sub { font-size: 0.8rem; margin-bottom: 12px; }
    .reorder-controls {
        grid-template-columns: 1fr 1fr;
        padding: 12px;
        gap: 10px;
    }
    .reorder-controls label { font-size: 0.68rem; gap: 2px; }
    .reorder-controls label small { display: none; }
    .reorder-controls input[type="number"] { padding: 7px 9px; font-size: 0.88rem; }
    .reorder-actions { grid-column: 1 / -1; margin-top: 2px; }
    .reorder-actions button { padding: 9px 10px; font-size: 0.82rem; }
    .reorder-summary { gap: 6px; font-size: 0.78rem; }
    .reorder-summary .chip { padding: 4px 10px; }

    /* Stack reorder table as cards like the others */
    #reorder-table {
        display: block;
        background: transparent;
        border: none;
        border-radius: 0;
    }
    #reorder-table thead {
        position: absolute;
        width: 1px; height: 1px;
        padding: 0; margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }
    #reorder-table tbody { display: block; }
    #reorder-table tbody tr {
        display: block;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 10px 14px;
        margin-bottom: 10px;
    }
    #reorder-table tbody tr:hover { background: var(--surface); }
    #reorder-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 6px 0;
        border-top: none;
        text-align: right;
        word-break: break-word;
    }
    #reorder-table tbody td + td {
        border-top: 1px dashed rgba(255, 255, 255, 0.06);
    }
    #reorder-table tbody td::before {
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        font-weight: 600;
        text-align: left;
        flex-shrink: 0;
        margin-right: 12px;
        font-size: 0.72rem;
    }
    #reorder-table tbody td:not(.loading):nth-of-type(1)::before { content: "Product"; }
    #reorder-table tbody td:not(.loading):nth-of-type(2)::before { content: "Sold / day"; }
    #reorder-table tbody td:not(.loading):nth-of-type(3)::before { content: "In stock"; }
    #reorder-table tbody td:not(.loading):nth-of-type(4)::before { content: "Days left"; }
    #reorder-table tbody td:not(.loading):nth-of-type(5)::before { content: "Reorder at"; }
    #reorder-table tbody td:not(.loading):nth-of-type(6)::before { content: "Suggested"; }
    #reorder-table tbody td:not(.loading):nth-of-type(7)::before { content: "Status"; }

    #reorder-table tbody td.loading {
        display: block;
        text-align: center;
        padding: 24px 12px !important;
    }
    #reorder-table tbody td.loading::before { content: none; }
}

/* ---- Charts section ---- */
.charts-section {
    padding: 0 24px 24px;
}

.charts-section h2 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text);
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 20px;
}

.chart-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.chart-wrap {
    position: relative;
    height: 260px;
}

@media (min-width: 900px) {
    .charts-grid { grid-template-columns: 1fr 1fr; }
    .chart-card.full { grid-column: 1 / -1; }
    .chart-wrap { height: 280px; }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    header { flex-direction: column; gap: 12px; }
    .controls { flex-direction: column; align-items: flex-start; }
    .summary-cards { grid-template-columns: 1fr 1fr; }
    .company-breakdown { grid-template-columns: 1fr; }
    .card span { font-size: 1.2rem; }
}

@media (max-width: 640px) {
    /* Tighter side padding so content has more room */
    header { padding: 12px 14px; }
    .company-filter-bar { padding: 10px 14px; }
    .controls { padding: 12px 14px; gap: 10px; }
    .summary-cards { padding: 0 14px 14px; gap: 10px; }
    .company-breakdown { padding: 0 14px 14px; }
    .items-summary { padding: 0 14px 14px; }
    .table-container { padding: 0 14px 20px; overflow-x: visible; }
    .stock-list-header { padding: 0 14px 14px; }
    .charts-section { padding: 0 14px 20px; }
    .chart-card { padding: 14px 16px; }
    .chart-card h3 { font-size: 0.9rem; }
    .chart-wrap { height: 240px; }

    /* Date range fills row, buttons wrap nicely */
    .date-range { width: 100%; gap: 8px; }
    .date-range label { flex: 1 1 calc(50% - 4px); display: flex; align-items: center; gap: 6px; }
    .date-range input[type="date"] { flex: 1; min-width: 0; width: 100%; }
    .date-range button { flex: 1 1 auto; }

    /* Search input stretches to row width */
    #stock-list-search { min-width: 0; width: 100%; }
    .stock-list-header { align-self: stretch; }

    /* Items-sold list: tighter columns so name doesn't get squashed */
    .item-row {
        grid-template-columns: minmax(0, 1fr) 64px 64px;
        gap: 8px;
        padding: 10px 14px;
    }
    .item-row .item-name { min-width: 0; word-break: break-word; }
    .item-row .item-name,
    .item-row .item-qty,
    .item-row .item-stock { text-align: center; }

    /* Convert sales + stock-list tables into stacked cards */
    #stock-table,
    #stock-list-table {
        display: block;
        background: transparent;
        border: none;
        border-radius: 0;
    }
    #stock-table thead,
    #stock-list-table thead {
        position: absolute;
        width: 1px; height: 1px;
        padding: 0; margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }
    #stock-table tbody,
    #stock-list-table tbody { display: block; }

    #stock-table tbody tr,
    #stock-list-table tbody tr {
        display: block;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 10px 14px;
        margin-bottom: 10px;
    }
    #stock-table tbody tr:hover,
    #stock-list-table tbody tr:hover { background: var(--surface); }

    #stock-table tbody td,
    #stock-list-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 6px 0;
        border-top: none;
        text-align: right;
        word-break: break-word;
    }
    #stock-table tbody td + td,
    #stock-list-table tbody td + td {
        border-top: 1px dashed rgba(255, 255, 255, 0.06);
    }
    #stock-table tbody td.num,
    #stock-list-table tbody td.num { text-align: right; }

    #stock-table tbody td::before,
    #stock-list-table tbody td::before {
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        font-weight: 600;
        text-align: left;
        flex-shrink: 0;
        margin-right: 12px;
    }

    /* Per-column labels (data-label not set in JS, so use nth-of-type) */
    #stock-table tbody td:not(.loading):nth-of-type(1)::before { content: "Company"; }
    #stock-table tbody td:not(.loading):nth-of-type(2)::before { content: "Product"; }
    #stock-table tbody td:not(.loading):nth-of-type(3)::before { content: "SKU"; }
    #stock-table tbody td:not(.loading):nth-of-type(4)::before { content: "Qty Sold"; }
    #stock-table tbody td:not(.loading):nth-of-type(5)::before { content: "Unit Price"; }
    #stock-table tbody td:not(.loading):nth-of-type(6)::before { content: "Revenue"; }

    #stock-list-table tbody td:not(.loading):nth-of-type(1)::before { content: "Product"; }
    #stock-list-table tbody td:not(.loading):nth-of-type(2)::before { content: "Description"; }
    #stock-list-table tbody td:not(.loading):nth-of-type(3)::before { content: "Price"; }
    #stock-list-table tbody td:not(.loading):nth-of-type(4)::before { content: "Stock Qty"; }
    #stock-list-table tbody td:not(.loading):nth-of-type(5)::before { content: "Threshold"; }
    #stock-list-table tbody td:not(.loading):nth-of-type(6)::before { content: "Status"; }

    /* Loading / empty rows stay full-width and centred */
    #stock-table tbody td.loading,
    #stock-list-table tbody td.loading {
        display: block;
        text-align: center;
        padding: 24px 12px !important;
    }
    #stock-table tbody td.loading::before,
    #stock-list-table tbody td.loading::before { content: none; }
}

@media (max-width: 480px) {
    .summary-cards { grid-template-columns: 1fr; }
    .reorder-controls { grid-template-columns: 1fr; }
}