/* Clean Readability Focused UI */
:root {
    --bg-dark: #0f172a;
    --bg-panel: #1e293b;
    --bg-header: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --border: #334155;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
}

.app-header {
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.app-header h1 { font-size: 22px; font-weight: 600; letter-spacing: 0.5px;}
.header-status { display: flex; gap: 12px; align-items: center;}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
}
.badge.success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge.info { background: rgba(59, 130, 246, 0.15); color: var(--accent); }
.badge.warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3);}
.badge.danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

/* Report Container */
.report-container { max-width: 1500px; margin: 40px auto; padding: 0 20px; display: flex; flex-direction: column; gap: 40px; }

.month-card {
    background-color: var(--bg-panel);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.month-header { background-color: rgba(0,0,0,0.2); padding: 24px 32px; border-bottom: 2px solid var(--accent); display: flex; justify-content: space-between; align-items: center;}
.month-header h2 { font-size: 28px; color: var(--text-main); font-weight: 700; letter-spacing: 1px;}
.month-summary { display: flex; gap: 32px; font-size: 14px; }
.month-summary > div { display: flex; flex-direction: column; }
.summary-label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; margin-bottom: 4px; }
.summary-val { font-weight: 700; font-size: 20px; }
.val-danger { color: var(--danger); }
.val-success { color: var(--success); }

/* Unified Table Design */
.data-table-wrapper { padding: 0 32px 32px 32px; }
.section-title { font-size: 18px; margin: 32px 0 16px 0; color: #cbd5e1; font-weight: 600; padding-left: 8px; border-left: 4px solid var(--accent); }

table { width: 100%; border-collapse: collapse; text-align: left; }
th { padding: 12px 16px; font-size: 13px; color: var(--text-muted); font-weight: 600; border-bottom: 2px solid var(--border); white-space: nowrap;}
td { padding: 14px 16px; font-size: 14px; color: var(--text-main); border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background-color: rgba(255,255,255,0.02); }

/* Utilities */
.sku-name { font-weight: 600; color: var(--text-main); display: block; font-size: 14px; margin-bottom: 4px;}
.sku-desc { font-size: 12px; color: var(--text-muted); }
.money { font-family: 'Inter', monospace; font-size: 15px;}
.num { font-weight: 600; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }

/* Navigation Tabs */
.month-tabs {
    background-color: var(--bg-panel);
    padding: 16px 40px;
    display: flex;
    gap: 12px;
    overflow-x: auto;
    border-bottom: 1px solid var(--border);
    scrollbar-width: thin;
}
.month-tabs::-webkit-scrollbar { height: 6px; }
.month-tabs::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.tab-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.tab-btn:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}
.tab-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.view-section {
    display: none;
}
.view-section.active {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

/* Overview Card */
.overview-card {
    background-color: var(--bg-panel);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    padding: 32px;
    width: 100%;
}
.overview-card h2 {
    font-size: 24px;
    color: var(--text-main);
    margin-bottom: 24px;
    border-left: 4px solid var(--accent);
    padding-left: 12px;
}
.chart-container {
    height: 400px;
    width: 100%;
    margin-top: 32px;
    position: relative;
}

/* Print Mode overrides for PDF export */
.exporting-pdf {
    background-color: #ffffff !important;
    color: #0f172a !important;
}
.exporting-pdf .month-header {
    background-color: #f1f5f9 !important;
    border-bottom: 2px solid #3b82f6 !important;
}
.exporting-pdf .month-header h2 {
    color: #0f172a !important;
}
.exporting-pdf .summary-label {
    color: #475569 !important;
}
.exporting-pdf .section-title {
    color: #0f172a !important;
    border-left: 4px solid #3b82f6 !important;
}
.exporting-pdf th {
    color: #475569 !important;
    border-bottom: 2px solid #cbd5e1 !important;
}
.exporting-pdf td {
    color: #0f172a !important;
    border-bottom: 1px solid #e2e8f0 !important;
}
.exporting-pdf .sku-name {
    color: #1e293b !important;
}
.exporting-pdf .sku-desc {
    color: #475569 !important;
}
.exporting-pdf span[style*='color:var(--text-muted)'] {
    color: #475569 !important;
}
.exporting-pdf span[style*='color:#94a3b8'] {
    color: #475569 !important;
}
.exporting-pdf span[style*='color:#cbd5e1'] {
    color: #475569 !important;
}

/* Ultimate Print Force Text Colors */
.exporting-pdf {
    background-color: #ffffff !important;
    color: #000000 !important;
}
.exporting-pdf h2, .exporting-pdf h3, .exporting-pdf th, .exporting-pdf td, .exporting-pdf span, .exporting-pdf div {
    color: #000000 !important;
}
.exporting-pdf .val-success, .exporting-pdf .text-success { color: #16a34a !important; }
.exporting-pdf .val-danger, .exporting-pdf .text-danger, .exporting-pdf .money.text-danger { color: #dc2626 !important; }
.exporting-pdf .val-warning { color: #ca8a04 !important; }

.exporting-pdf .badge.danger { background-color: #fef2f2 !important; color: #dc2626 !important; border: 1px solid #fecaca !important; }
.exporting-pdf .badge.info { background-color: #f0fdf4 !important; color: #16a34a !important; border: 1px solid #bbf7d0 !important; }

.exporting-pdf .month-header { background-color: #fafafa !important; border-bottom: 2px solid #d4d4d8 !important; }
.exporting-pdf th { background-color: #f4f4f5 !important; border-bottom: 2px solid #a1a1aa !important; }
.exporting-pdf td { border-bottom: 1px solid #e4e4e7 !important; }

@media print {
    * { animation: none !important; transition: none !important; opacity: 1 !important; }
    body { background: #fff !important; color: #000 !important; }
    .app-header, .month-tabs { display: none !important; }
    .view-section { display: none !important; }
    .view-section.active { display: block !important; }
    .month-card { box-shadow: none !important; border: none !important; background: transparent !important; margin: 0 !important; padding: 0 !important; }
    * { color: #000 !important; }
    .val-success, .text-success { color: #16a34a !important; }
    .val-danger, .text-danger, .danger, .money.text-danger { color: #dc2626 !important; }
    .val-warning { color: #ca8a04 !important; }
    th { border-bottom: 2px solid #aaa !important; background: transparent !important; }
    td { border-bottom: 1px solid #ddd !important; }
    .month-header { background: transparent !important; border-bottom: 2px solid #000 !important; }
    button, .tab-btn { display: none !important; }
}