/* ====================================================================
   ANSI Terminal Dashboard — monochrome base + one switchable accent
   ==================================================================== */

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #101010;
    --bg-panel: #0d0d0d;
    --fg-primary: #d6d6d6;
    --fg-secondary: #7a7a7a;
    --fg-dim: #3a3a3a;
    --border: #242424;

    --accent: #00ff88;
    --accent-dim: #00aa55;

    /* Directional widgets (ratio, order book, liquidations, trades) use
       green/red for readability. The PRICE CHART stays fully monochrome
       (see --chart-* below). buy/bid/long = green, sell/ask/short = red. */
    --up: #23c87a;
    --down: #ff5d5d;

    /* chart is fully monochrome (greyscale only, no accent/green at all):
       up = bright, down = dim, wick = dimmer, grid = faint. */
    --chart-up: #e8e8e8;
    --chart-down: #6c6c6c;
    --chart-wick: #494949;
    --chart-grid: #1c1c1c;

    --xs: 4px; --sm: 8px; --md: 12px; --lg: 16px; --xl: 24px;
    --mono: 'SF Mono', 'JetBrains Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
}

body.theme-green  { --accent: #00ff88; --accent-dim: #00aa55; }
body.theme-amber  { --accent: #ffb000; --accent-dim: #cc8800; }
body.theme-cyan   { --accent: #38e8ff; --accent-dim: #00aaaa; }
body.theme-red    { --accent: #ff4d4d; --accent-dim: #aa0000; }
body.theme-white  { --accent: #f0f0f0; --accent-dim: #999999; }

* { box-sizing: border-box; }

html, body {
    margin: 0; padding: 0; height: 100%;
    background: var(--bg-primary);
    color: var(--fg-primary);
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.4;
}

/* ---- App shell: full-height column ---------------------------------- */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: var(--md);
    gap: var(--md);
}

/* ---- Header --------------------------------------------------------- */
.header {
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--sm);
    flex: 0 0 auto;
}
.header-left { display: flex; align-items: center; gap: var(--md); }
.symbol { font-size: 16px; font-weight: bold; color: var(--accent); letter-spacing: 1px; }
.contract-tag {
    font-size: 10px; color: var(--fg-secondary);
    border: 1px solid var(--border); padding: 1px 6px; border-radius: 2px;
    letter-spacing: 1px;
}
.status-indicator { display: flex; align-items: center; gap: var(--sm); font-size: 11px; color: var(--fg-secondary); }
.status-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--fg-dim); animation: pulse 1.2s infinite;
}
.status-dot.connected { background: var(--accent); animation: none; box-shadow: 0 0 6px var(--accent); }
@keyframes pulse { 0%,100%{opacity:.4} 50%{opacity:1} }

.theme-btn {
    background: none; border: 1px solid var(--accent); color: var(--accent);
    padding: 4px 12px; font-family: inherit; font-size: 12px; cursor: pointer;
    transition: all .15s; border-radius: 2px;
}
.theme-btn:hover { background: var(--accent); color: var(--bg-primary); }

/* ---- Ticker strip --------------------------------------------------- */
.ticker-section {
    flex: 0 0 auto;
    border: 1px solid var(--border); border-radius: 2px;
    background: var(--bg-panel); padding: var(--sm) var(--md);
}
.ticker-section.stale { opacity: .5; }
.ticker-row { display: flex; flex-wrap: wrap; gap: var(--lg) var(--xl); }
.ticker-item { display: flex; flex-direction: column; gap: 2px; }
.ticker-item .label {
    font-size: 10px; color: var(--fg-secondary);
    text-transform: uppercase; letter-spacing: 1px;
}
.ticker-item .value { font-size: 13px; font-weight: bold; color: var(--fg-primary); }
.ticker-item .value.positive { color: var(--up); }
.ticker-item .value.negative { color: var(--down); }

/* ---- Main grid ------------------------------------------------------ */
.grid {
    flex: 1 1 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--md);
    min-height: 0;            /* allow children to shrink & scroll */
}
.col { display: flex; flex-direction: column; gap: var(--md); min-height: 0; }

/* ---- Panels --------------------------------------------------------- */
.panel {
    border: 1px solid var(--border); border-radius: 2px;
    background: var(--bg-panel);
    display: flex; flex-direction: column; min-height: 0; overflow: hidden;
}
.panel-head {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--sm) var(--md);
    border-bottom: 1px solid var(--border);
    flex: 0 0 auto;
}
.panel-title {
    font-size: 11px; color: var(--accent);
    text-transform: uppercase; letter-spacing: 1.5px; font-weight: bold;
}

/* chart panel takes the full left column height */
.chart-panel { grid-row: 1 / 2; }

/* ---- Interval tabs -------------------------------------------------- */
.interval-tabs { display: flex; gap: 2px; }
.interval-tab {
    padding: 3px 12px; border: 1px solid transparent; background: none;
    color: var(--fg-secondary); font-family: inherit; font-size: 11px;
    cursor: pointer; text-transform: uppercase; letter-spacing: 1px;
    transition: all .15s; border-radius: 2px;
}
.interval-tab:hover { color: var(--fg-primary); }
.interval-tab.active { color: var(--accent); border-color: var(--accent); }

/* ---- Chart ---------------------------------------------------------- */
.chart-container { flex: 1 1 auto; padding: var(--sm) var(--md); overflow: hidden; min-height: 0; }
.ascii-chart {
    margin: 0; padding: 0;
    font-family: var(--mono); font-size: 12px; line-height: 1;
    white-space: pre; letter-spacing: 0;
    -webkit-font-smoothing: none;
}
.ascii-chart .c-up   { color: var(--chart-up); }
.ascii-chart .c-dn   { color: var(--chart-down); }
.ascii-chart .c-wk   { color: var(--chart-wick); }
.ascii-chart .c-ax   { color: var(--fg-secondary); }
.ascii-chart .c-gr   { color: var(--chart-grid); }
.ascii-chart .c-bd   { color: var(--fg-dim); }

/* ---- Liquidations feed --------------------------------------------- */
.liquidations-feed, .trades-feed {
    flex: 1 1 auto; overflow-y: auto; padding: var(--xs) var(--md);
    font-size: 12px; min-height: 0;
}
.liquidation-item {
    display: grid;
    grid-template-columns: 62px 48px 70px 1fr;
    align-items: center; gap: var(--sm);
    padding: 3px 0; border-bottom: 1px solid var(--border);
}
.liquidation-item:last-child { border-bottom: none; }
.liq-time { color: var(--fg-secondary); font-size: 11px; }
.liq-side { font-weight: bold; text-transform: uppercase; font-size: 11px; }
.liq-side.long  { color: var(--up); }
.liq-side.short { color: var(--down); }
.liq-value { text-align: right; color: var(--fg-primary); }
.liq-bar { height: 6px; background: var(--bg-secondary); border-radius: 1px; overflow: hidden; }
.liq-bar-inner { height: 100%; border-radius: 1px; }
.liq-bar-inner.long  { background: var(--up); opacity: .85; }
.liq-bar-inner.short { background: var(--down); opacity: .85; }

/* ---- Trades tape ---------------------------------------------------- */
.trade-item {
    display: grid; grid-template-columns: 62px 1fr 70px;
    gap: var(--sm); padding: 2px 0; font-size: 12px;
}
.trade-time { color: var(--fg-secondary); font-size: 11px; }
.trade-price { text-align: right; }
.trade-price.buy  { color: var(--up); }
.trade-price.sell { color: var(--down); }
.trade-size { text-align: right; color: var(--fg-secondary); }

/* ---- Totals table --------------------------------------------------- */
.totals-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.totals-table thead th {
    padding: var(--sm) var(--md); text-align: right; color: var(--accent);
    text-transform: uppercase; letter-spacing: 1px; font-size: 10px;
    border-bottom: 1px solid var(--border);
}
.totals-table thead th:first-child { text-align: left; }
.totals-table td {
    padding: var(--sm) var(--md); text-align: right;
    border-bottom: 1px solid var(--border);
}
.totals-table td:first-child { text-align: left; color: var(--fg-secondary); }
.totals-table tbody tr:last-child td { border-bottom: none; }

/* ---- Ratio bar ------------------------------------------------------ */
.ratio-panel { flex: 0 0 auto; }
.ratio-bar-container { display: flex; align-items: center; gap: var(--md); padding: var(--md); }
.ratio-bar {
    flex: 1; height: 14px; display: flex;
    border: 1px solid var(--border); overflow: hidden; background: var(--bg-secondary);
}
.ratio-long  { background: var(--up);   transition: width .3s; }
.ratio-short { background: var(--down); transition: width .3s; }
.ratio-text { min-width: 88px; text-align: right; font-size: 12px; color: var(--fg-primary); }
.ratio-legend {
    display: flex; gap: var(--lg); padding: 0 var(--md) var(--md);
    font-size: 10px; color: var(--fg-secondary);
}
.ratio-legend i.dot { display: inline-block; width: 8px; height: 8px; margin-right: 5px; border-radius: 1px; vertical-align: middle; }
.ratio-legend i.dot.long  { background: var(--up); }
.ratio-legend i.dot.short { background: var(--down); }

/* ---- Panel sizing within columns ------------------------------------ */
.feed-panel, .trades-panel { flex: 1 1 auto; }   /* tall, scrollable */
.ratio-panel, .totals-panel, .book-panel { flex: 0 0 auto; }

/* ---- Filter inputs -------------------------------------------------- */
.filter {
    font-size: 10px; color: var(--fg-secondary);
    text-transform: uppercase; letter-spacing: 1px;
    display: flex; align-items: center; gap: 4px;
}
.filter input {
    width: 72px; background: var(--bg-secondary);
    border: 1px solid var(--border); color: var(--fg-primary);
    font-family: var(--mono); font-size: 11px; padding: 2px 6px; border-radius: 2px;
    text-align: right;
}
.filter input:focus { outline: none; border-color: var(--accent); }
/* hide number spinners for a cleaner terminal look */
.filter input::-webkit-outer-spin-button,
.filter input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.filter input { -moz-appearance: textfield; }

/* ---- Order book (aggregate resting volume) ------------------------- */
.orderbook {
    margin: 0; padding: var(--sm) var(--md);
    font-family: var(--mono); font-size: 12px; overflow: hidden;
}
.ob-agg-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: 1px;
    color: var(--fg-secondary); margin: 2px 0;
}
.ob-row { display: grid; grid-template-columns: 1fr 84px 78px; gap: var(--sm); align-items: center; padding: 3px 0; }
.ob-vol { text-align: right; color: var(--fg-primary); }
.ob-usd { text-align: right; color: var(--fg-secondary); }
.ob-depth { height: 14px; background: var(--bg-secondary); border-radius: 1px; overflow: hidden; }
.ob-depth-inner { height: 100%; border-radius: 1px; opacity: .8; }
.ob-depth-inner.ask { background: var(--down); }
.ob-depth-inner.bid { background: var(--up); }
.ob-mid { text-align: center; color: var(--fg-primary); padding: 4px 0; border-block: 1px solid var(--border); margin: 3px 0; letter-spacing: 1px; }
.ob-imb { text-align: center; color: var(--fg-secondary); font-size: 11px; margin-top: 4px; letter-spacing: 1px; }
.book-spread { font-size: 10px; color: var(--fg-secondary); letter-spacing: 1px; }

/* ---- Misc ----------------------------------------------------------- */
.empty-state { padding: var(--md); color: var(--fg-secondary); font-style: italic; text-align: center; }

::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--fg-dim); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---- Responsive: stack columns on narrow screens ------------------- */
@media (max-width: 1100px) {
    .app { height: auto; }
    .grid { grid-template-columns: 1fr; }
    .chart-container { height: 320px; }
}