:root {
    color-scheme: light;
    --pf-bg: #f3f6fb;
    --pf-surface: #ffffff;
    --pf-border: #dce3ed;
    --pf-text: #172033;
    --pf-muted: #64748b;
    --pf-blue: #1d4ed8;
    --pf-pass-bg: #dcfce7;
    --pf-pass-border: #22c55e;
    --pf-fail-bg: #fee2e2;
    --pf-fail-border: #ef4444;
    --pf-unknown-bg: #f1f5f9;
    --pf-unknown-border: #94a3b8;
    --pf-stale-bg: #fef3c7;
    --pf-stale-border: #f59e0b;
}

body {
    min-height: 100vh;
    color: var(--pf-text);
    background: var(--pf-bg);
}

.performance-flow-shell {
    max-width: 1760px;
}

.performance-flow-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.performance-flow-eyebrow {
    margin-bottom: 0.25rem;
    color: var(--pf-blue);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.performance-flow-toolbar,
.performance-flow-legend,
.performance-site,
.performance-plant,
.performance-area,
.performance-line {
    border: 1px solid var(--pf-border);
    background: var(--pf-surface);
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.055);
}

.performance-flow-toolbar {
    padding: 1rem;
    border-radius: 16px;
}

.performance-history-toolbar,
.performance-heatmap-panel {
    border: 1px solid var(--pf-border);
    border-radius: 14px;
    background: var(--pf-surface);
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.045);
}

.performance-history-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1rem;
}

.performance-history-toolbar__title,
.performance-history-toolbar__actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.performance-history-toolbar__title > i {
    color: var(--pf-blue);
    font-size: 1.3rem;
}

.performance-history-toolbar__title small {
    display: block;
    color: var(--pf-muted);
}

.performance-history-toolbar__actions { flex-wrap: wrap; }
.performance-history-toolbar__actions input { width: 155px; }

.performance-history-banner {
    padding: 0.7rem 1rem;
    border: 1px solid #93c5fd;
    border-left: 5px solid #2563eb;
    border-radius: 12px;
    color: #1e3a8a;
    background: #eff6ff;
    font-weight: 650;
}

.performance-heatmap-panel { padding: 1rem; }

.performance-heatmap-panel__header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.performance-heatmap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(165px, 1fr));
    gap: 0.55rem;
}

.heatmap-line {
    min-height: 88px;
    padding: 0.7rem;
    border: 2px solid;
    border-radius: 11px;
    text-align: left;
    color: var(--pf-text);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.heatmap-line:hover,
.heatmap-line:focus-visible {
    outline: none;
    transform: translateY(-2px);
    box-shadow: 0 9px 18px rgba(15, 23, 42, 0.14);
}

.heatmap-line--pass { border-color: var(--pf-pass-border); background: var(--pf-pass-bg); }
.heatmap-line--fail { border-color: var(--pf-fail-border); background: var(--pf-fail-bg); }
.heatmap-line--unknown { border-color: var(--pf-unknown-border); background: var(--pf-unknown-bg); }
.heatmap-line--stale { border-color: var(--pf-stale-border); background: var(--pf-stale-bg); }
.heatmap-line__name { display: block; font-weight: 850; }
.heatmap-line__scope { display: block; overflow: hidden; color: var(--pf-muted); font-size: 0.7rem; text-overflow: ellipsis; white-space: nowrap; }
.heatmap-line__stats { display: flex; justify-content: space-between; gap: 0.5rem; margin-top: 0.45rem; font-size: 0.72rem; font-weight: 750; }

.performance-flow-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    min-height: 38px;
}

.performance-flow-last-updated {
    color: var(--pf-muted);
    font-size: 0.86rem;
}

.performance-flow-summary {
    display: grid;
    grid-template-columns: repeat(6, minmax(110px, 1fr));
    gap: 0.75rem;
}

.summary-tile {
    padding: 0.85rem 1rem;
    border: 1px solid var(--pf-border);
    border-radius: 13px;
    background: var(--pf-surface);
}

.summary-tile__label {
    color: var(--pf-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.summary-tile__value {
    margin-top: 0.1rem;
    font-size: 1.55rem;
    font-weight: 800;
}

.summary-tile--pass { border-top: 4px solid var(--pf-pass-border); }
.summary-tile--fail { border-top: 4px solid var(--pf-fail-border); }
.summary-tile--unknown { border-top: 4px solid var(--pf-unknown-border); }
.summary-tile--stale { border-top: 4px solid var(--pf-stale-border); }

.performance-flow-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    padding: 0.7rem 1rem;
    border-radius: 12px;
    font-size: 0.84rem;
    font-weight: 650;
}

.status-dot {
    display: inline-block;
    width: 0.7rem;
    height: 0.7rem;
    margin-right: 0.25rem;
    border-radius: 999px;
}

.status-dot--pass { background: var(--pf-pass-border); }
.status-dot--fail { background: var(--pf-fail-border); }
.status-dot--unknown { background: var(--pf-unknown-border); }
.status-dot--stale { background: var(--pf-stale-border); }

.performance-flow-loading,
.performance-flow-empty {
    display: flex;
    min-height: 220px;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    border: 1px dashed #cbd5e1;
    border-radius: 16px;
    color: var(--pf-muted);
    background: rgba(255, 255, 255, 0.65);
}

.performance-flow-hierarchy {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.performance-site {
    padding: 1rem;
    border-radius: 18px;
    border-left: 5px solid #1e3a8a;
}

.performance-site__title,
.performance-plant__title,
.performance-area__title,
.performance-line__header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
}

.performance-site__title h2,
.performance-plant__title h3,
.performance-area__title h4,
.performance-line__header h5 {
    margin: 0;
}

.performance-plant {
    margin-top: 1rem;
    padding: 0.9rem;
    border-radius: 15px;
    border-left: 4px solid #2563eb;
    background: #f8fbff;
}

.performance-area {
    margin-top: 0.85rem;
    padding: 0.85rem;
    border-radius: 13px;
    border-left: 3px solid #60a5fa;
}

.performance-line {
    margin-top: 0.75rem;
    padding: 0.8rem;
    border-radius: 12px;
    box-shadow: none;
}

.line-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    color: var(--pf-muted);
    font-size: 0.78rem;
}

.line-status {
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
}

.line-status--pass { color: #166534; background: var(--pf-pass-bg); }
.line-status--fail { color: #991b1b; background: var(--pf-fail-bg); }
.line-status--unknown { color: #475569; background: var(--pf-unknown-bg); }
.line-status--stale { color: #92400e; background: var(--pf-stale-bg); }

.hierarchy-title-status {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.hierarchy-health {
    color: var(--pf-muted);
    font-size: 0.72rem;
}

.machine-flow-scroll {
    overflow-x: auto;
    padding: 1rem 0.25rem 0.55rem;
    scrollbar-color: #cbd5e1 transparent;
}

.machine-flow-track {
    display: flex;
    width: max-content;
    min-width: 100%;
    align-items: center;
}

.machine-flow-node {
    position: relative;
    display: flex;
    width: fit-content;
    min-width: 96px;
    max-width: 230px;
    height: 72px;
    min-height: 72px;
    max-height: 72px;
    flex: 0 0 auto;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    padding: 0.55rem 0.7rem;
    border: 2px solid;
    border-radius: 14px;
    text-align: left;
    color: var(--pf-text);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.machine-flow-node:hover,
.machine-flow-node:focus-visible {
    z-index: 2;
    outline: none;
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.16);
}

.machine-flow-node--pass { border-color: var(--pf-pass-border); background: var(--pf-pass-bg); }
.machine-flow-node--fail { border-color: var(--pf-fail-border); background: var(--pf-fail-bg); }
.machine-flow-node--unknown { border-color: var(--pf-unknown-border); background: var(--pf-unknown-bg); }
.machine-flow-node--stale { border-color: var(--pf-stale-border); background: var(--pf-stale-bg); }

.machine-flow-node__name {
    display: block;
    width: auto;
    overflow: visible;
    font-size: 0.82rem;
    font-weight: 800;
    line-height: 1.2;
    overflow-wrap: anywhere;
    text-overflow: clip;
    white-space: normal;
}

.machine-flow-node__status {
    display: block;
    align-self: flex-start;
    margin-top: 0.3rem;
    font-size: 0.64rem;
    font-weight: 900;
    letter-spacing: 0.035em;
}

.machine-flow-arrow {
    position: relative;
    width: 28px;
    height: 2px;
    flex: 0 0 28px;
    background: #718096;
}

.machine-flow-arrow::after {
    position: absolute;
    top: -5px;
    right: -1px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 9px solid #718096;
    content: '';
}

.machine-flow-arrow--fallback {
    height: 0;
    border-top: 2px dashed #94a3b8;
    background: transparent;
}

.unconfigured-machines {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 0.65rem;
    padding-top: 0.65rem;
    border-top: 1px dashed #cbd5e1;
}

.unconfigured-machines__label {
    width: 100%;
    color: #92400e;
    font-size: 0.75rem;
    font-weight: 700;
}

.unconfigured-machines .machine-flow-node {
    min-width: 96px;
    max-width: 210px;
    border-style: dashed;
}

.advanced-flow-edges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 0.7rem;
    padding-top: 0.65rem;
    border-top: 1px dashed #cbd5e1;
}

.advanced-flow-edge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 750;
}

.advanced-flow-edge--branch { background: #2563eb; }
.advanced-flow-edge--bypass { background: #7c3aed; }
.advanced-flow-edge--rework { background: #d97706; }
.advanced-flow-edge__type { font-weight: 900; letter-spacing: 0.025em; }

.machine-kpi-popover {
    position: fixed;
    z-index: 1080;
    width: min(410px, calc(100vw - 24px));
    padding: 0;
    overflow: hidden;
    border: 1px solid #cbd5e1;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 22px 55px rgba(15, 23, 42, 0.24);
}

.machine-popover__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
}

.machine-popover__title { font-weight: 850; }
.machine-popover__path { color: var(--pf-muted); font-size: 0.7rem; overflow-wrap: anywhere; }
.machine-popover__body { padding: 0.65rem 1rem; }

.machine-kpi-row {
    display: grid;
    grid-template-columns: minmax(110px, 1.4fr) 0.9fr 0.9fr 0.75fr;
    gap: 0.45rem;
    align-items: center;
    padding: 0.42rem 0;
    border-bottom: 1px solid #eef2f7;
    font-size: 0.76rem;
}

.machine-kpi-row:last-child { border-bottom: 0; }
.machine-kpi-row__name { font-weight: 700; }
.machine-kpi-row__value { text-align: right; font-variant-numeric: tabular-nums; }
.machine-kpi-row__status { text-align: right; font-size: 0.67rem; font-weight: 900; }
.machine-kpi-row__status--pass { color: #15803d; }
.machine-kpi-row__status--fail { color: #dc2626; }
.machine-kpi-row__status--unknown { color: #64748b; }
.machine-kpi-row__status--stale { color: #d97706; }

.machine-popover__meta {
    padding: 0.55rem 1rem;
    color: var(--pf-muted);
    background: #f8fafc;
    font-size: 0.7rem;
}

.machine-popover__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1rem 0.9rem;
}

.root-cause-dialog {
    width: min(1050px, calc(100vw - 28px));
    max-height: min(820px, calc(100vh - 28px));
    padding: 0;
    overflow: hidden;
    border: 0;
    border-radius: 16px;
    color: var(--pf-text);
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.3);
}

.root-cause-dialog::backdrop { background: rgba(15, 23, 42, 0.55); }

.root-cause-dialog__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--pf-border);
    background: #f8fafc;
}

.root-cause-dialog__body {
    max-height: calc(100vh - 125px);
    padding: 1rem 1.2rem 1.2rem;
    overflow: auto;
}

.root-cause-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.root-cause-card {
    overflow: hidden;
    border: 1px solid var(--pf-border);
    border-radius: 12px;
}

.root-cause-card h3 {
    margin: 0;
    padding: 0.7rem 0.8rem;
    border-bottom: 1px solid var(--pf-border);
    background: #f8fafc;
    font-size: 0.88rem;
}

.root-cause-card table { margin: 0; font-size: 0.74rem; }
.root-cause-card th { color: var(--pf-muted); font-size: 0.66rem; text-transform: uppercase; }
.root-cause-empty { padding: 1.3rem 0.8rem; color: var(--pf-muted); text-align: center; }

@media (max-width: 991.98px) {
    .performance-flow-summary { grid-template-columns: repeat(3, 1fr); }
    .root-cause-grid { grid-template-columns: 1fr; }
}

@media (max-width: 575.98px) {
    .performance-flow-summary { grid-template-columns: repeat(2, 1fr); }
    .performance-site { padding: 0.65rem; }
    .performance-plant, .performance-area { padding: 0.6rem; }
    .machine-flow-node { max-width: 200px; }
    .machine-flow-arrow { width: 20px; flex-basis: 20px; }
    .machine-kpi-row { grid-template-columns: 1.35fr 0.8fr 0.8fr; }
    .machine-kpi-row__status { grid-column: 2 / 4; }
}