:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-panel: #1a1f2e;
    --border: #2a3142;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --green: #10b981;
    --green-dim: #065f46;
    --red: #ef4444;
    --red-dim: #7f1d1d;
    --blue: #3b82f6;
    --yellow: #f59e0b;
    --cyan: #06b6d4;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', monospace;
}

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

body {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    margin: 0;
}

.terminal-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 42px);
    padding: 4px;
    gap: 4px;
}

/* Header */
.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 12px;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-weight: 700;
    font-size: 14px;
    color: var(--cyan);
    letter-spacing: 1px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--yellow);
    animation: pulse 1s infinite;
}

.status-dot.connected {
    background: var(--green);
    animation: none;
}

.status-dot.disconnected {
    background: var(--red);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.status-text {
    color: var(--text-secondary);
    font-size: 11px;
}

.pause-resume-button {
    background: #24385c;
    border: 1px solid #4f6f9f;
    border-radius: 3px;
    color: #dff3ff;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 10px;
}

.pause-resume-button:hover {
    background: #2f4773;
}

.stat-badge {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    color: var(--cyan);
    font-variant-numeric: tabular-nums; /* Fixed-width digits! */
}

.clock {
    color: var(--text-muted);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
}

/* Ticker Tape */
.ticker-tape-container {
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 0;
    min-height: 28px;
}

.ticker-tape {
    display: flex;
    gap: 24px;
    animation: scroll-left 30s linear infinite;
    white-space: nowrap;
    font-size: 12px;
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.ticker-item {
    display: inline-flex;
    gap: 8px;
    align-items: center;
}

.ticker-symbol {
    font-weight: 600;
    color: var(--text-primary);
}

.ticker-price {
    font-variant-numeric: tabular-nums;
}

.ticker-up { color: var(--green); }
.ticker-down { color: var(--red); }

/* Main Grid */
.main-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1.6fr 0.85fr;
    grid-template-rows: auto 1fr 1fr 0.6fr;
    gap: 4px;
    min-height: 0;
}

.ticker-tape-container {
    grid-column: 1 / -1;
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.panel-title {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.feed-count-label {
    color: var(--text-muted);
    font-size: 9px;
    margin-right: 6px;
}

.feed-count-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feed-count {
    background: var(--blue);
    color: white;
    padding: 1px 6px;
    border-radius: 8px;
    font-size: 9px;
}

/* Price Grid */
.price-grid-panel {
    grid-row: 2 / 6;
}

.price-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
    overflow-y: auto;
    font-size: 12px;
}

.price-row {
    display: grid;
    grid-template-columns: 70px 120px 90px 80px 60px;
    align-items: center;
    padding: 4px 8px;
    border-radius: 3px;
    background: var(--bg-secondary);
    transition: background 0.35s ease-out;
}

.price-row.flash-green {
    background: var(--green-dim) !important;
}

.price-row.flash-red {
    background: var(--red-dim) !important;
}

.price-symbol {
    font-weight: 600;
    color: var(--text-primary);
}

.price-bid-ask {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-size: 10px;
    color: var(--text-secondary);
}

.price-mid {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-weight: 500;
}

.price-change {
    text-align: right;
    font-size: 11px;
    font-variant-numeric: tabular-nums;
}

.price-exchange {
    text-align: right;
    font-size: 9px;
    color: var(--text-muted);
}

/* Signal Feed */
.signal-feed-panel {
    grid-row: 2 / 6;
    grid-column: 2;
}

.signal-feed {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1px;
    font-size: 11px;
}

.signal-row {
    display: grid;
    grid-template-columns: 84px 50px 62px 80px 42px 38px;
    gap: 4px;
    padding: 3px 6px;
    border-radius: 2px;
    font-variant-numeric: tabular-nums;
}

.signal-row.buy {
    border-left: 2px solid var(--green);
    background: rgba(16, 185, 129, 0.05);
}

.signal-row.sell {
    border-left: 2px solid var(--red);
    background: rgba(239, 68, 68, 0.05);
}

.signal-time {
    color: var(--text-muted);
    font-size: 10px;
}

.signal-symbol {
    font-weight: 600;
}

.signal-price {
    text-align: right;
}

.signal-spread {
    text-align: right;
    font-size: 9px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.signal-vol {
    text-align: right;
    color: var(--text-secondary);
    font-size: 10px;
}

.signal-dir {
    text-align: center;
    font-weight: 700;
    font-size: 10px;
}

.signal-dir.buy { color: var(--green); }
.signal-dir.sell { color: var(--red); }

/* Order Flow */
.order-flow-panel {
    grid-column: 3;
    grid-row: 2;
}

.order-flow {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 3px;
    overflow: hidden;
}

.flow-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 10px;
}

.flow-symbol {
    width: 50px;
    font-weight: 600;
}

.flow-bar-track {
    flex: 1;
    height: 14px;
    background: var(--bg-secondary);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    display: flex;
}

.flow-buy-bar {
    height: 100%;
    background: var(--green);
    opacity: 0.7;
    transition: width 0.3s;
}

.flow-sell-bar {
    height: 100%;
    background: var(--red);
    opacity: 0.7;
    transition: width 0.3s;
}

.flow-ratio {
    width: 40px;
    text-align: right;
    color: var(--text-muted);
}

/* Stats */
.throughput-panel {
    grid-column: 3;
    grid-row: 3;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    flex: 1;
    align-content: center;
}

/* Rate Graph Panel */
.rate-graph-panel {
    grid-column: 3;
    grid-row: 4;
}

#rateGraph {
    width: 100%;
    height: calc(100% - 24px);
    border-radius: 3px;
    background: var(--bg-secondary);
}

.rate-time-axis {
    display: flex;
    justify-content: space-between;
    padding-top: 4px;
    font-size: 9px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.stat-item {
    text-align: center;
}

.stat-label {
    font-size: 9px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--cyan);
    font-variant-numeric: tabular-nums;
}

.stat-value.stat-warn {
    color: var(--red);
}

.server-metrics-panel {
    grid-column: 3;
    grid-row: 5;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

span#queueDepthBadge {
    min-width: 90px;
}