:root {
    --bg-dark:    #0d1117;
    --bg-widget:  #161b22;
    --border:     #30363d;
    --accent:     #58a6ff;
    --accent-glow:rgba(88,166,255,0.3);
    --warn:       #f9a825;
    --danger:     #f85149;
    --good:       #3fb950;
    --purple:     #a371f7;
    --text:       #c9d1d9;
    --text-muted: #8b949e;
    --font:       'Fira Code', monospace;
}

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

body {
    background: var(--bg-dark);
    color: var(--text);
    font-family: var(--font);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ── TOP BAR ── */
.app-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    height: 38px;
    flex-shrink: 0;
    background: var(--bg-widget);
    border-bottom: 1px solid var(--border);
    gap: 1rem;
}

.detector-id {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.07em;
    text-transform: uppercase;
    white-space: nowrap;
}

.top-badges {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.badge {
    font-size: 0.6rem;
    padding: 0.15rem 0.45rem;
    border-radius: 3px;
    border: 1px solid;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.badge-acq {
    color: var(--good);
    border-color: rgba(63,185,80,0.4);
    background: rgba(63,185,80,0.07);
}

.dot-blink {
    animation: dot-pulse 1.8s ease-in-out infinite;
    display: inline-block;
}
@keyframes dot-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.25; }
}

.badge-fpga {
    color: var(--accent);
    border-color: rgba(88,166,255,0.35);
    background: rgba(88,166,255,0.06);
}

.badge-adc {
    color: var(--text-muted);
    border-color: var(--border);
}

.top-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.65rem;
    color: var(--text-muted);
    flex-shrink: 0;
    white-space: nowrap;
}

.tr-hl { color: var(--text); }
.clock { color: var(--text); font-size: 0.75rem; }

/* ── BODY GRID ── */
.body-grid {
    display: grid;
    grid-template-columns: 180px 1fr 250px;
    gap: 0.65rem;
    padding: 0.65rem;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* ── PANEL ── */
.panel {
    background: var(--bg-widget);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.65rem 0.75rem;
    overflow: hidden;
}

.section-lbl {
    font-size: 0.55rem;
    letter-spacing: 0.13em;
    color: var(--text-muted);
    text-transform: uppercase;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.4rem;
}

/* ── LEFT COLUMN ── */
.left-column {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    min-height: 0;
}

.hist-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.hist-sub {
    font-size: 0.55rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    margin-top: -0.2rem;
}

.hist-canvas-wrap {
    flex: 1;
    min-height: 0;
    position: relative;
}

.hist-canvas-wrap canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.acq-panel { flex-shrink: 0; }

.acq-rows { display: flex; flex-direction: column; }

.acq-row {
    display: flex;
    justify-content: space-between;
    padding: 0.22rem 0;
    border-bottom: 1px solid rgba(48,54,61,0.45);
    font-size: 0.62rem;
}
.acq-row:last-child { border-bottom: none; }
.acq-k { color: var(--text-muted); }
.acq-v { color: var(--accent); }
.acq-v.good { color: var(--good); }
.acq-v.warn { color: var(--warn); }

/* ── CENTER: SCATTER ── */
.scatter-column {
    min-width: 0;
    min-height: 0;
}

.scatter-panel {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.scatter-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 0.4rem;
    flex-shrink: 0;
    gap: 1rem;
}

.sh-left h2 {
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.03em;
}

.scatter-sub {
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.legend {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    font-size: 0.6rem;
    color: var(--text-muted);
    flex-shrink: 0;
    padding-top: 0.1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.ld {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
}
.ld-n { background: var(--accent); box-shadow: 0 0 5px var(--accent-glow); }
.ld-g { background: var(--danger); box-shadow: 0 0 5px rgba(248,81,73,0.4); }
.ld-d {
    border-radius: 0;
    width: 18px;
    height: 2px;
    background: repeating-linear-gradient(
        90deg,
        var(--warn) 0, var(--warn) 5px,
        transparent 5px, transparent 9px
    );
}

.scatter-canvas-wrap {
    flex: 1;
    min-height: 0;
    position: relative;
}

#scatter-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* ── RIGHT COLUMN ── */
.right-column {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    min-height: 0;
}

.fom-panel { flex-shrink: 0; }

.fom-display {
    text-align: center;
    padding: 0.6rem 0 0.5rem;
}

.fom-value {
    font-size: 3rem;
    font-weight: 600;
    color: var(--good);
    line-height: 1;
    text-shadow: 0 0 24px rgba(63,185,80,0.45);
    letter-spacing: -0.02em;
}

.fom-label {
    font-size: 0.55rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

.fom-peaks {
    display: flex;
    flex-direction: column;
    margin-top: 0.6rem;
}

.peak-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.28rem 0;
    border-bottom: 1px solid rgba(48,54,61,0.5);
    font-size: 0.63rem;
}
.peak-row.no-border { border-bottom: none; }
.pk-lbl { color: var(--text-muted); }
.pk-n   { color: var(--accent); }
.pk-g   { color: var(--danger); }
.pk-d   { color: var(--warn); }

.rates-panel { flex-shrink: 0; }

.rate-rows { display: flex; flex-direction: column; margin-top: 0.2rem; }

.rate-row {
    display: flex;
    align-items: baseline;
    padding: 0.32rem 0;
    border-bottom: 1px solid rgba(48,54,61,0.5);
    gap: 0.3rem;
}
.rate-row.no-border { border-bottom: none; }
.rl { color: var(--text-muted); font-size: 0.63rem; flex: 1; }
.rv { font-size: 0.95rem; }
.rv-n { color: var(--accent); }
.rv-g { color: var(--danger); }
.rv-t { color: var(--text); }
.rv-r { color: var(--purple); }
.ru   { font-size: 0.55rem; color: var(--text-muted); }

.log-panel {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.status-log {
    flex: 1;
    overflow-y: auto;
    margin-top: 0.25rem;
}
.status-log::-webkit-scrollbar { width: 3px; }
.status-log::-webkit-scrollbar-track { background: transparent; }
.status-log::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.status-log p {
    font-size: 0.6rem;
    color: var(--text-muted);
    padding: 0.22rem 0;
    border-bottom: 1px solid rgba(48,54,61,0.35);
    line-height: 1.5;
}
.status-log p.good   { color: var(--good); }
.status-log p.warn   { color: var(--warn); }
.status-log p.danger { color: var(--danger); }