:root {
    color-scheme: light;
    --bg: #f6f7f9;
    --surface: #ffffff;
    --surface-muted: #eef2f6;
    --text: #1f2933;
    --muted: #657482;
    --border: #d9e0e7;
    --accent: #2563eb;
    --danger: #b42318;
    --success: #16803c;
    --warning: #a16207;
    --orange: #c2410c;
    --dark-red: #7f1d1d;
    font-family: Arial, Helvetica, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 32px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 13px;
    text-transform: uppercase;
}

h1, h2 {
    margin: 0;
    letter-spacing: 0;
}

h1 {
    font-size: 30px;
}

h2 {
    font-size: 18px;
}

.header-status,
.section-heading,
.status-pill {
    display: flex;
    align-items: center;
}

.header-status {
    gap: 8px;
    color: var(--muted);
    white-space: nowrap;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #94a3b8;
}

.status-up { background: var(--success); }
.status-down { background: var(--danger); }
.status-unknown { background: #94a3b8; }

.dashboard-shell {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px 32px 40px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.metric-panel,
.data-section,
.detail-section,
.error-banner {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.metric-panel {
    padding: 18px;
}

.metric-label,
.muted {
    color: var(--muted);
    font-size: 13px;
}

.metric-panel strong {
    display: block;
    margin-top: 8px;
    font-size: 24px;
}

.error-banner {
    margin-bottom: 20px;
    padding: 12px 14px;
    color: var(--danger);
    background: #fff4f2;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.data-section,
.detail-section {
    overflow: hidden;
}

.section-heading {
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
}

.table-wrap {
    position: relative;
    overflow-x: auto;
}

table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
}

th,
td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
    font-size: 14px;
}

th {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

tbody tr {
    cursor: pointer;
}

tbody tr:hover,
tbody tr.selected {
    background: var(--surface-muted);
}

.status-pill {
    display: inline-flex;
    min-width: 96px;
    justify-content: center;
    border-radius: 999px;
    padding: 4px 8px;
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
}

.status-success { background: var(--success); }
.status-duplicate { background: var(--warning); }
.status-validation-failed { background: var(--orange); }
.status-ocr-failed,
.status-ai-failed { background: var(--danger); }
.status-error { background: var(--dark-red); }
.status-default { background: #64748b; }

.empty-state {
    margin: 0;
    padding: 24px 18px;
    color: var(--muted);
}

.detail-section {
    margin-top: 20px;
}

.detail-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin: 0;
    padding: 4px 18px 18px;
}

.detail-list div {
    min-width: 0;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

dt {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

dd {
    margin: 5px 0 0;
    overflow-wrap: anywhere;
}

@media (max-width: 1100px) {
    .summary-grid,
    .content-grid,
    .detail-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .app-header {
        align-items: flex-start;
        flex-direction: column;
        padding: 20px;
    }

    .dashboard-shell {
        padding: 20px;
    }

    .summary-grid,
    .content-grid,
    .detail-list {
        grid-template-columns: 1fr;
    }
}
.filter-bar,
.pagination {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
}

.filter-bar label {
    display: grid;
    gap: 4px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.filter-bar input,
.filter-bar select {
    min-width: 150px;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    font: inherit;
    text-transform: none;
}

.pagination {
    justify-content: flex-end;
    border-top: 1px solid var(--border);
    border-bottom: 0;
}

.pagination button {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
}

.pagination button:disabled {
    color: var(--muted);
    cursor: not-allowed;
}