:root {
    --primary: #5B5CE2;
    --primary-light: #EEF2FF;

    --app-bg: #F7F9FC;
    --sidebar-bg: #FFFFFF;
    --card-bg: #FFFFFF;

    --text-main: #1F2544;
    --text-secondary: #6B7280;
    --text-muted: #7B84A6;

    --border: #E6EAF2;

    --success: #10B981;
    --warning: #F59E0B;
    --danger: #DC2626;

    --shadow: 0 12px 30px rgba(42, 53, 99, 0.08);
    --soft-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Base */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    background: var(--app-bg);
    color: var(--text-main);
}

/* App shell */
.app-shell {
    display: flex;
    min-height: 100vh;
    width: 100%;
    background: var(--app-bg);
}

.main-content {
    flex: 1;
    padding: 28px;
    overflow-x: hidden;
    max-width: 1800px;
    width: 100%;
    margin: 0 auto;
}

/* Sidebar */
.sidebar {
    width: 240px;
    min-width: 240px;
    height: 100vh;
    position: sticky;
    top: 0;
    background: var(--sidebar-bg);
    padding: 30px 20px;
    border-right: 1px solid var(--border);
    box-shadow: 8px 0 30px rgba(42, 53, 99, 0.08);
}

.sidebar-logo {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 15px 0 5px 15px;
    margin: 0;
    line-height: 0;
}

.sidebar-logo-image {
    width: 180px !important;
    max-width: none !important;
    height: auto;
    display: block;
}

.sidebar-divider {
    border: none;
    height: 1px;
    background-color: var(--border);
    margin: 0 15px 20px 15px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    transition: all 0.2s ease;
}

.sidebar-link:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateX(4px);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.header h1 {
    margin: 0 0 6px 0;
    font-size: 34px;
    font-weight: 800;
}

.header p {
    margin: 0;
    color: var(--text-muted);
}

.header-badge {
    background: var(--primary);
    color: #FFFFFF;
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
}

/* Filters */
.filter-card {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 16px;
    align-items: end;
    margin-bottom: 18px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow);
}

.filter-card label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
    color: var(--text-main);
}

.date-filter-message {
    color: var(--text-muted);
    font-weight: 700;
    padding-bottom: 8px;
}

/* KPI cards */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(5, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 6px solid #CBD5E1;
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow);
}

.kpi-title {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
}

.kpi-value {
    font-size: 30px;
    font-weight: 800;
    margin: 8px 0;
    color: var(--text-main);
}

.kpi-subtitle,
.kpi-note,
.kpi-trend {
    color: var(--text-muted);
    font-size: 13px;
}

.kpi-good {
    border-left-color: var(--success);
}

.kpi-warning {
    border-left-color: var(--warning);
}

.kpi-bad {
    border-left-color: var(--danger);
}

/* Cards */
.chart-card,
.insight-card,
.upload-card,
.table-card,
.wide-card,
.mini-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow);
}

.chart-card h3,
.insight-card h3,
.wide-card h3 {
    margin-top: 0;
    color: var(--text-main);
}

/* Overview top section */
.top-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 22px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px 22px;
    margin-bottom: 18px;
    box-shadow: var(--soft-shadow);
}

.toolbar-title {
    flex: 1;
}

.toolbar-title h3 {
    margin-top: 0;
}

.insight-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.insight-list {
    list-style-type: none !important;
    list-style: none !important;
    padding-left: 0 !important;
    margin: 0 !important;
}

.insight-item {
    padding: 8px 12px;
    margin-bottom: 10px;

    border-left: 3px solid #2276e4;
    background: #FAFBFC;
    border-radius: 0 8px 8px 0;

    color: var(--text-main);
}

.insight-icon {
    display: none;
}
/* Upload */
.upload-panel {
    width: 340px;
}

.toolbar-upload {
    border: 2px dashed #CBD5E1;
    border-radius: 14px;
    background: #FAFBFF;
    min-height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 18px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.toolbar-upload:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}

.upload-message {
    margin-top: 10px;

    padding: 10px 12px;

    border-radius: 10px;

    background: #EFF6FF;
    border: 1px solid #BFDBFE;

    color: #1E40AF;

    font-size: 13px;
    font-weight: 600;

    min-height: 20px;
}

.mini-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.mini-card-header h4 {
    margin: 0;
}

.mini-card-icon {
    color: #5E738A;
    opacity: 0.9;

    display: flex;
    align-items: center;

    position: relative;
    top: -4px;
}

.mini-card {
    border-radius: 18px;
    padding: 16px;
    border: 1px solid var(--border);

    transition: all 0.2s ease;
}

.mini-card:hover {
    transform: translateY(-2px);
}

.insight-row .mini-card.mini-card-warning {
    background-color: #F0F9FF !important;
    border-color: #BAE6FD !important;
}

.insight-row .mini-card.mini-card-info {
    background-color: #F8FAFC !important;
    border-color: #CBD5E1 !important;
}

.insight-row .mini-card.mini-card-accent {
    background-color: #EFF6FF !important;
    border-color: #BFDBFE !important;
}

.insight-row .mini-card.mini-card-warning .mini-card-icon {
    color: #0284C7 !important;
}

.insight-row .mini-card.mini-card-info .mini-card-icon {
    color: #64748B !important;
}

.insight-row .mini-card.mini-card-accent .mini-card-icon {
    color: #1E40AF !important;
}
/* Charts */
.chart-grid,
.overview-two-row-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    width: 100%;
    margin-bottom: 18px;
}

.chart-wide,
.chart-small {
    grid-column: span 1;
}

/* Other page layouts */
.page-hero {
    background: linear-gradient(135deg, var(--card-bg), var(--primary-light));
    border-radius: 22px;
    padding: 26px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}

.page-hero h2 {
    margin: 0 0 8px 0;
    font-size: 30px;
}

.page-hero p {
    margin: 0;
    color: var(--text-secondary);
}

.insight-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 18px;
}

.mini-card h4 {
    margin: 0 0 8px 0;
    color: var(--text-secondary);
    font-size: 13px;
    text-transform: uppercase;
}

.wide-card {
    margin-bottom: 18px;
}

.two-column-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

/* Upload box fallback */
.upload-box {
    border: 2px dashed #CBD5E1;
    border-radius: 14px;
    padding: 26px;
    text-align: center;
    cursor: pointer;
    background: #FAFBFF;
}

/* Responsive */
@media (max-width: 1400px) {
    .app-shell {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        height: auto;
        position: relative;
    }

    .kpi-row,
    .chart-grid,
    .overview-two-row-grid,
    .filter-card,
    .insight-row,
    .two-column-section {
        grid-template-columns: 1fr;
    }

    .top-toolbar {
        flex-direction: column;
    }

    .upload-panel {
        width: 100%;
    }

    .header {
        align-items: flex-start;
        gap: 12px;
        flex-direction: column;
    }
}