/* Amplify-style dark blue trading UI */
:root {
  --bg-main: #02101f;
  --bg-panel: #071b33;
  --bg-dark: #020a16;
  --fg-text: #dfe9ff;
  --fg-positive: #42f57b;
  --fg-negative: #ff5c5c;
  --fg-highlight: #00baf2;
  --border: #133252;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-main);
  color: var(--fg-text);
  font-family: "Segoe UI", Tahoma, system-ui, sans-serif;
  font-size: 13px;
  min-height: 100vh;
}

a { color: var(--fg-highlight); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ================= HEADER ================= */
#top-header {
  background: var(--bg-dark);
  padding: 8px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}
.header-left, .header-right {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.brand { font-weight: 700; letter-spacing: 1px; color: var(--fg-highlight); }
.author { font-style: italic; color: var(--fg-text); opacity: 0.8; }
.stat { font-size: 12px; }
.pos { color: var(--fg-positive); }
.neg { color: var(--fg-negative); }
.highlight { color: var(--fg-highlight); font-weight: 700; }

/* ================= BUTTONS ================= */
.btn {
  border: none;
  padding: 6px 12px;
  color: white;
  cursor: pointer;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.btn:hover { filter: brightness(1.15); }
.btn:active { transform: translateY(1px); }
.btn-blue { background: #1464d2; }
.btn-green { background: #1f9d55; }
.btn-red { background: #e74c3c; }
.btn-grey { background: #555555; }

/* ================= LAYOUT ================= */
#grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr 0.9fr;
  grid-template-rows: auto 1fr;
  gap: 8px;
  padding: 8px;
  height: calc(100vh - 90px);
  min-height: 600px;
}
#panel-left  { grid-column: 1; grid-row: 1 / span 2; display: flex; flex-direction: column; }
#panel-center{ grid-column: 2; grid-row: 1; display: flex; flex-direction: column; gap: 8px; }
#panel-right { grid-column: 3; grid-row: 1; display: flex; flex-direction: column; }
#chart-panel { grid-column: 2 / span 2; grid-row: 2; display: flex; flex-direction: column; }

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
}
.panel h2 {
  margin: 0 0 6px 0;
  color: var(--fg-highlight);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
}

/* ================= CLIENT / RFQ ================= */
#panel-left { overflow: hidden; }
.scroll-list {
  list-style: none;
  margin: 0;
  padding: 6px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 3px;
  flex: 1;
  overflow-y: auto;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 12px;
}
.scroll-list.small { max-height: 130px; }
.scroll-list li { padding: 2px 0; border-bottom: 1px dotted #10243f; }
.scroll-list li:last-child { border-bottom: none; }
.chat-system { color: #a0b2ce; font-style: italic; }
.chat-client { color: var(--fg-highlight); }
.chat-trade { color: var(--fg-positive); font-weight: 600; }
.chat-exchange { color: #ffcc33; }

.rfq-info {
  margin: 8px 0 6px 0;
  font-style: italic;
  color: var(--fg-text);
  font-size: 12px;
  min-height: 32px;
}
.quote-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.quote-row label { width: 80px; text-align: right; }
input[type="number"], select {
  background: var(--bg-dark);
  color: var(--fg-text);
  border: 1px solid var(--border);
  padding: 4px 6px;
  border-radius: 3px;
  font-family: inherit;
  font-size: 12px;
  outline: none;
  flex: 1;
}
input[type="number"]:focus, select:focus { border-color: var(--fg-highlight); }
#btn-quote { width: 100%; padding: 8px; margin-top: 4px; }

/* ================= CENTER ================= */
.center-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 8px;
  flex: 1;
}
.exch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 5px 0;
  flex-wrap: wrap;
}
.exch-row label { min-width: 52px; color: var(--fg-text); }
.mid-label {
  margin-left: auto;
  color: var(--fg-text);
  font-family: "Consolas", monospace;
}
#lbl-exch-bid, #lbl-exch-ask {
  font-family: "Consolas", monospace;
  font-size: 14px;
  padding: 4px 10px;
  background: var(--bg-dark);
  border-radius: 3px;
  flex: 1;
  text-align: center;
}
#exch-size { max-width: 100px; }

#mid-panel table { width: 100%; border-collapse: collapse; }
#mid-panel td {
  padding: 4px 6px;
  font-family: "Consolas", monospace;
}
#mid-panel td:first-child { font-weight: 700; }
#mid-panel td:nth-child(2) { text-align: right; }
#mid-panel td:nth-child(3) { text-align: center; width: 30px; font-weight: 700; }

.msg-bar {
  color: var(--fg-text);
  font-style: italic;
  font-size: 12px;
  margin: 2px 0;
  min-height: 18px;
}

/* ================= POSITIONS ================= */
#pos-table { width: 100%; border-collapse: collapse; background: white; color: black; }
#pos-table th {
  background: #e0e0e0;
  color: black;
  font-weight: 700;
  padding: 5px 4px;
  font-size: 11px;
  border: 1px solid #c0c0c0;
}
#pos-table td {
  padding: 5px 4px;
  text-align: center;
  border: 1px solid #e0e0e0;
  font-family: "Consolas", monospace;
  font-size: 12px;
}
.pos-positive { background: #e6ffe6; }
.pos-negative { background: #ffe6e6; }

/* ================= CHART ================= */
#chart-panel { min-height: 280px; }
#price-chart {
  width: 100%;
  height: 100%;
  background: #000;
  border-radius: 3px;
  display: block;
  flex: 1;
}

/* ================= FOOTER ================= */
#bottom-footer {
  background: var(--bg-dark);
  padding: 6px 14px;
  text-align: center;
  font-size: 11px;
  color: #7f8aa5;
  border-top: 1px solid var(--border);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 1100px) {
  #grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    height: auto;
  }
  #panel-left, #panel-center, #panel-right, #chart-panel {
    grid-column: 1;
    grid-row: auto;
  }
  .scroll-list { max-height: 180px; flex: none; }
}