:root {
  --bg: #0f1218; --panel: #161b24; --panel-2: #1d2430; --border: #2a3342;
  --text: #d8dee9; --muted: #8592a6; --accent: #4c8dff;
  --up: #26a69a; --down: #ef5350; --warn: #f0b429;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 14px; color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); }
body { display: grid; grid-template-rows: auto 1fr 260px; }
.hidden { display: none !important; }
input, select, button { font: inherit; color: var(--text); }
input, select { background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; width: 100%; }
button { cursor: pointer; border: 1px solid var(--border); background: var(--panel-2); border-radius: 6px; padding: 7px 12px; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.ghost { background: transparent; }
button.buy { background: var(--up); border-color: var(--up); color: #fff; font-weight: 600; }
button.sell { background: var(--down); border-color: var(--down); color: #fff; font-weight: 600; }
button.small { padding: 3px 8px; font-size: 12px; }
label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 12px; }

header { display: flex; align-items: center; gap: 16px; padding: 8px 16px; background: var(--panel); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; letter-spacing: .3px; }
.pill { padding: 2px 10px; border-radius: 99px; font-size: 12px; }
.pill.on { background: rgba(38,166,154,.18); color: var(--up); }
.pill.off { background: rgba(239,83,80,.18); color: var(--down); }
.acct { display: flex; gap: 18px; color: var(--muted); margin-left: auto; font-variant-numeric: tabular-nums; }
.acct b { color: var(--text); font-weight: 600; }

main { display: grid; grid-template-columns: 200px 1fr 260px; min-height: 0; }
.symbols { border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; padding: 8px; gap: 8px; }
#symbol-list { list-style: none; margin: 0; padding: 0; overflow: auto; }
#symbol-list li { padding: 6px 8px; border-radius: 6px; cursor: pointer; }
#symbol-list li small { display: block; color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#symbol-list li:hover { background: var(--panel-2); }
#symbol-list li.active { background: rgba(76,141,255,.18); }

.chart-area { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.toolbar { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.toolbar select { width: auto; }
.toolbar .tf-size { width: 80px; }
.toolbar .chk { flex-direction: row; align-items: center; gap: 6px; }
.toolbar .chk input[type=number] { width: 56px; padding: 3px 6px; }
.toolbar .chk input[type=checkbox] { width: auto; }
.price { font-variant-numeric: tabular-nums; color: var(--muted); }
#chart { flex: 3; min-height: 0; position: relative; }
#osc { flex: 1; min-height: 90px; border-top: 1px solid var(--border); }

/* Order lines and range ruler drawn over the chart (app.js: "Trading on the chart", "Range ruler"). */
.chart-overlay { position: absolute; inset: 0; z-index: 3; pointer-events: none; overflow: hidden; user-select: none; }
.trade-line { position: absolute; left: 0; top: -5px; height: 11px; }
.trade-line.draggable { pointer-events: auto; cursor: ns-resize; }
.trade-label { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); display: flex; align-items: center;
  pointer-events: auto; background: var(--panel); border: 1px solid var(--c); border-radius: 4px; font-size: 11px;
  line-height: 17px; white-space: nowrap; font-variant-numeric: tabular-nums; box-shadow: 0 2px 6px rgba(0,0,0,.35); }
.trade-label .drag { padding: 0 6px; }
.trade-line:not(.draggable) .trade-label .drag { cursor: default; }
.trade-label button { padding: 0 6px; font-size: 11px; line-height: 17px; border: none; border-left: 1px solid var(--border); border-radius: 0; background: transparent; }
.trade-label button:hover { background: var(--panel-2); }
.trade-label button[data-new] { cursor: ns-resize; }
.order-menu { position: absolute; left: 0; top: 0; z-index: 1; display: flex; flex-direction: column; min-width: 190px; padding: 4px;
  pointer-events: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.45); }
.order-menu .head { padding: 4px 8px 6px; color: var(--muted); font-size: 11px; border-bottom: 1px solid var(--border); margin-bottom: 4px; }
.order-menu button { text-align: left; border: none; background: transparent; padding: 6px 8px; font-size: 13px; font-variant-numeric: tabular-nums; }
.order-menu button:hover { background: var(--panel-2); }
.order-menu button[data-side=buy] { color: var(--up); }
.order-menu button[data-side=sell] { color: var(--down); }
.ruler { position: absolute; inset: 0; width: 100%; height: 100%; }
.ruler line { stroke-width: 1; stroke-dasharray: 4 3; }
.ruler-label { position: absolute; left: 0; top: 0; padding: 4px 8px; background: var(--panel); border: 1px solid; border-radius: 4px;
  font-size: 12px; line-height: 1.4; white-space: nowrap; font-variant-numeric: tabular-nums; }

.dropdown { position: relative; }
.dropdown-panel { position: absolute; top: calc(100% + 6px); left: 0; z-index: 5; width: 320px; max-height: 70vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; box-shadow: 0 8px 24px rgba(0,0,0,.4); }
.dropdown-panel h4 { margin: 4px 0 8px; font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
.dropdown-panel h4:not(:first-child) { margin-top: 14px; }
.ind-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.ind-row > label.chk { flex-direction: row; align-items: center; gap: 6px; color: var(--text); font-size: 13px; min-width: 100px; }
.ind-row input[type=checkbox] { width: auto; }
.ind-row input[type=number] { width: 58px; padding: 3px 6px; }
.ind-row input[type=color] { width: 26px; height: 24px; padding: 0; border: none; background: none; }
.ind-row .p { display: flex; align-items: center; gap: 3px; color: var(--muted); font-size: 11px; flex-direction: row; }
.toolbar { flex-wrap: wrap; row-gap: 6px; }
.toolbar > button, .toolbar .dropdown > button { white-space: nowrap; }
.preview-info { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: center; flex: 1 1 380px; min-width: 0; }
.preview-info button { padding: 2px 8px; font-size: 12px; }

.ticket { border-left: 1px solid var(--border); padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.ticket h3 { margin: 0; font-size: 14px; }
.bidask { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.bidask div { background: var(--panel-2); border-radius: 6px; padding: 8px; text-align: center; }
.bidask span { display: block; color: var(--muted); font-size: 11px; }
.bidask b { font-size: 16px; font-variant-numeric: tabular-nums; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.msg { min-height: 1em; margin: 0; font-size: 12px; color: var(--muted); }
.msg.ok { color: var(--up); } .msg.err, .error { color: var(--down); }

.bottom { border-top: 1px solid var(--border); background: var(--panel); display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; gap: 2px; padding: 6px 8px 0; border-bottom: 1px solid var(--border); }
.tabs button { border: none; border-radius: 6px 6px 0 0; background: transparent; color: var(--muted); }
.tabs button.active { background: var(--panel-2); color: var(--text); }
.tab { overflow: auto; padding: 8px; flex: 1; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12px; }
.up { color: var(--up); } .down { color: var(--down); }
.empty { color: var(--muted); padding: 12px; }

.bot-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; margin-bottom: 10px; }
.bot-form label { width: 120px; }
.bot-form label.wide { width: 230px; }
.bot-desc { flex-basis: 100%; margin: 0; font-size: 12px; color: var(--muted); }
.adv { flex-basis: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; }
.adv summary { cursor: pointer; color: var(--text); font-size: 13px; }
.adv-grid { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.adv fieldset { border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px 10px; display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; margin: 0; }
.adv legend { color: var(--muted); font-size: 12px; padding: 0 4px; }
.adv label { width: 150px; }
.adv label.chk-line { flex-direction: row; align-items: center; gap: 6px; width: auto; color: var(--text); }
.adv label.chk-line input { width: auto; }
.bot .rules { color: var(--muted); font-size: 12px; margin-top: 4px; }

body.tall-bottom { grid-template-rows: auto 1fr 470px; }
.bt-controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; margin-bottom: 8px; }
.bt-controls label { width: 130px; }
.bt-title { margin: 0 0 6px; font-size: 13px; }
.bt-stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 6px; margin-bottom: 8px; }
.bt-stats div { background: var(--panel-2); border-radius: 6px; padding: 6px 8px; }
.bt-stats span { display: block; font-size: 11px; color: var(--muted); }
.bt-stats b { font-variant-numeric: tabular-nums; }
.bt-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px; height: 230px; }
#bt-equity { min-height: 0; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.bt-trades { overflow: auto; border: 1px solid var(--border); border-radius: 6px; }
.bt-trades table td, .bt-trades table th { padding: 3px 6px; font-size: 12px; }
.bt-note { font-size: 11px; color: var(--muted); margin: 6px 0 0; }
.muted, tr.muted td { color: var(--muted); }
.opt-panel { margin-bottom: 8px; }
.opt-panel[open] > * + * { margin-top: 8px; }
.opt-ranges { max-height: 220px; overflow: auto; }
.opt-ranges table { width: auto; }
.opt-ranges td, .opt-ranges th { padding: 3px 6px; font-size: 12px; }
.opt-ranges input[type=number] { width: 90px; padding: 3px 6px; }
.opt-ranges label.chk-line { width: auto; }
.opt-settings { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; }
.opt-settings label { width: 140px; }
.opt-progress { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); }
.opt-progress progress { flex: 0 1 320px; height: 10px; accent-color: var(--accent); }
.opt-table { max-height: 260px; }
.opt-actions { padding: 6px; }

textarea { font: inherit; color: var(--text); background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; width: 100%; resize: vertical; }
#ai-spec { font-family: ui-monospace, Consolas, monospace; font-size: 12px; }
.ai-panel { margin-bottom: 10px; }
.ai-panel > * + * { margin-top: 8px; }
.ai-row { display: flex; gap: 8px; align-items: flex-start; flex-wrap: wrap; }
.ai-row textarea { flex: 1 1 400px; }
.ai-draft { display: flex; flex-direction: column; gap: 8px; }
.ai-notes { font-size: 13px; line-height: 1.45; }
.ai-notes h5 { margin: 6px 0 2px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .3px; }
.ai-notes ul { margin: 0; padding-left: 18px; }
.custom-actions { display: flex; gap: 4px; align-self: flex-end; }
.bt-analysis { background: var(--panel-2); border-radius: 8px; padding: 8px 12px; font-size: 13px; line-height: 1.5; margin-top: 8px; }
.bt-analysis h3, .bt-analysis h4 { margin: 8px 0 4px; font-size: 14px; }
.bt-analysis ul, .bt-analysis ol { margin: 4px 0; padding-left: 20px; }
code { background: var(--panel-2); padding: 0 4px; border-radius: 4px; }
.bot-form .params { display: contents; }
.bot { background: var(--panel-2); border-radius: 8px; padding: 8px 10px; margin-bottom: 8px; }
.bot header { all: unset; display: flex; gap: 10px; align-items: center; }
.bot .logs { margin-top: 6px; max-height: 90px; overflow: auto; font-family: ui-monospace, Consolas, monospace; font-size: 12px; color: var(--muted); }
.bot .logs .error { color: var(--down); } .bot .logs .trade { color: var(--up); }

.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; z-index: 10; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 20px; width: min(340px, calc(100% - 32px)); display: flex; flex-direction: column; gap: 12px; }
.card h2 { margin: 0; font-size: 18px; }

@media (max-width: 900px) {
  body { grid-template-rows: auto auto auto; height: auto; }
  main { grid-template-columns: 1fr; }
  .symbols { border-right: none; border-bottom: 1px solid var(--border); max-height: 160px; }
  #chart { height: 360px; flex: none; }
  #osc { height: 140px; flex: none; }
  .dropdown-panel { width: min(320px, calc(100vw - 32px)); }
  .ticket { border-left: none; border-top: 1px solid var(--border); }
  .acct { display: none; }
  .bottom { min-height: 300px; }
  body.tall-bottom { grid-template-rows: auto auto auto; }
  .bt-body { grid-template-columns: 1fr; height: auto; }
  #bt-equity { height: 200px; }
  .bt-trades { max-height: 260px; }
}