:root {
  --bg: #000000;
  --fg: #ffffff;
  --amber: #ffb000;
  --green: #00d26a;
  --red: #ff4136;
  --grey: #888888;
  --border: #444444;
  --panel-bg: #0a0a0a;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: "Consolas", "Courier New", monospace;
  font-size: 13px;
  margin: 0;
  padding: 0;
  height: 100%;
}

.hidden { display: none !important; }

button {
  background: #000;
  color: var(--amber);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: inherit;
  padding: 3px 8px;
  cursor: pointer;
}
button:hover { background: #111; border-color: var(--amber); }

input, select {
  background: #000;
  color: var(--fg);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: inherit;
  padding: 2px 4px;
}

table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 2px 6px; border-bottom: 1px solid #222; white-space: nowrap; }
th { color: var(--amber); font-weight: normal; border-bottom: 1px solid var(--border); }

h2, h3 { color: var(--amber); font-weight: normal; margin: 0 0 4px 0; text-transform: uppercase; letter-spacing: 1px; }
h2 { font-size: 13px; }
h3 { font-size: 12px; margin-top: 8px; }

.pos { color: var(--green); }
.neg { color: var(--red); }
.grey { color: var(--grey); }
.amber { color: var(--amber); }

/* ---- login ---- */
#login-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
#login-screen h1 { color: var(--amber); letter-spacing: 3px; }
#login-form { display: flex; flex-direction: column; gap: 6px; width: 260px; }
#login-form input { padding: 6px; }
#login-error { color: var(--red); margin-top: 8px; min-height: 1em; }

/* ---- app shell ---- */
#app { display: flex; flex-direction: column; height: 100vh; }

#topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 4px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-bg);
  flex-shrink: 0;
}
#topbar .label { color: var(--amber); }
#topbar-conn.connected { color: var(--green); }
#topbar-conn.disconnected { color: var(--red); }
#topbar .spacer { flex: 1; }

#main-grid {
  display: grid;
  grid-template-columns: 220px 1fr 320px;
  gap: 4px;
  flex: 1;
  min-height: 0;
  padding: 4px;
}

#left-panel, #center-panel, #right-panel {
  border: 1px solid var(--border);
  background: var(--panel-bg);
  padding: 6px;
  overflow-y: auto;
  min-height: 0;
}

.asset-group { margin-bottom: 8px; }
.asset-group-title { color: var(--grey); letter-spacing: 1px; margin: 6px 0 2px; }
.market-row {
  display: flex;
  justify-content: space-between;
  padding: 2px 4px;
  cursor: pointer;
  border: 1px solid transparent;
}
.market-row:hover { border-color: var(--border); }
.market-row.selected { border-color: var(--amber); }
.market-row .sym { color: var(--fg); }
.market-row .quote { color: var(--grey); }

#instrument-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
#instrument-header .sym { font-size: 16px; color: var(--amber); }

#instrument-description { font-size: 12px; margin-bottom: 6px; min-height: 1em; }

#price-chart {
  height: 110px;
  border: 1px solid var(--border);
  margin-bottom: 6px;
  position: relative;
}
#price-chart svg { display: block; width: 100%; height: 100%; }
#price-chart .chart-line { fill: none; stroke-width: 1.5; }
#price-chart .chart-line.up { stroke: var(--green); }
#price-chart .chart-line.down { stroke: var(--red); }
#price-chart .chart-baseline { stroke: var(--border); stroke-width: 1; }
#price-chart .chart-label { fill: var(--grey); font-size: 10px; font-family: inherit; }
#price-chart .chart-empty { color: var(--grey); padding: 8px; }

#book-ladder table { margin-bottom: 6px; }
#book-ladder .bid { color: var(--green); }
#book-ladder .ask { color: var(--red); }

#order-entry {
  display: flex;
  gap: 6px;
  align-items: center;
  border: 1px solid var(--border);
  padding: 6px;
  margin: 6px 0;
}
#order-entry input { width: 90px; }

#order-error { color: var(--red); min-height: 1em; margin-top: 4px; }

#feeds {
  display: flex;
  gap: 4px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.feed-panel {
  flex: 1;
  min-width: 0;
  background: var(--panel-bg);
  display: flex;
  flex-direction: column;
}
.feed-header {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 8px 0;
  flex-shrink: 0;
}
.feed-body {
  height: 160px;
  overflow-y: auto;
  padding: 2px 8px 4px;
  font-size: 12px;
}
.news-line { white-space: pre-wrap; }
.news-line .ts { color: var(--grey); }
.news-line .tag-NEWS { color: var(--amber); }
.news-line .tag-TRADE { color: var(--fg); }
.news-line .tag-BUY { color: var(--green); }
.news-line .tag-SELL { color: var(--red); }

/* ---- leaderboard overlay ---- */
#leaderboard-panel {
  position: fixed;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  max-width: 95vw;
  max-height: 85vh;
  overflow-y: auto;
  background: #000;
  border: 1px solid var(--amber);
  padding: 12px;
  z-index: 50;
}
#leaderboard-panel .lb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 10px; }