/* ── Reset ───────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0a0a0a;
  --bg-surface:  #0e0e0e;
  --bg-elevated: #141414;
  --border:      #1c1c1c;
  --border-dim:  #262626;

  --text:        #ece3cb;
  --text-muted:  #8a8070;
  --text-dim:    #4a4540;

  --gold:        #c9a535;
  --gold-dim:    #6b5818;
  --gold-glow:   rgba(201,165,53,0.12);

  --pink:        #c060a0;
  --blue:        #4d9de0;
  --orange:      #e07b30;
  --green:       #3fb950;
  --red:         #f85149;

  --font-serif:  'Playfair Display', Georgia, serif;
  --font-mono:   'SF Mono','Fira Code','Consolas',monospace;

  /* ── Layout constants — update here if topbar/nav heights change ── */
  --topbar-h:    46px;
  --nav-h:       34px;
  --chrome-h:    calc(var(--topbar-h) + var(--nav-h));   /* 80px */
  --ctrl-h:      40px;  /* control bar inside a screen */
  --screen-h:    calc(100vh - var(--chrome-h));           /* full usable area */
  --chart-h:     calc(var(--screen-h) - var(--ctrl-h));  /* usable minus control bar */
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  overflow: hidden;
}

/* ── Top Bar ─────────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 46px;
  padding: 0 22px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: 14px; }

.brand-serif {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.12em;
}

.brand-rule { width: 1px; height: 16px; background: var(--gold-dim); }

.brand-sub {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ticker */
.topbar-center { display: flex; align-items: center; gap: 6px; }
.ticker-item   { display: flex; align-items: baseline; gap: 8px; }
.ticker-sym    { font-size: 11px; color: var(--text-muted); letter-spacing: 0.15em; }
.ticker-price  { font-family: var(--font-serif); font-size: 16px; color: var(--text); }
.ticker-chg    { font-size: 11px; }
.ticker-chg.up   { color: var(--green); }
.ticker-chg.down { color: var(--red); }

/* status */
.topbar-right { display: flex; align-items: center; gap: 10px; }

.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background .3s;
}
.status-dot.live  { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.error { background: var(--red); }

.status-label { font-size: 11px; letter-spacing: 0.2em; color: var(--text-dim); }

.exit-btn {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border-dim);
  padding: 3px 9px;
  border-radius: 1px;
  transition: color .15s, border-color .15s;
}
.exit-btn:hover { color: var(--red); border-color: var(--red); }

/* ── Nav Tabs ─────────────────────────────────────────────────────────── */
.nav-tabs {
  display: flex;
  align-items: stretch;
  height: 34px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 14px;
  gap: 2px;
}

.nav-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  padding: 0 16px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
  white-space: nowrap;
  margin-bottom: -1px;
}
.nav-tab:hover:not(:disabled)   { color: var(--text); }
.nav-tab.active                  { color: var(--gold); border-bottom-color: var(--gold); }
.nav-tab--dim, .nav-tab:disabled { color: var(--text-dim); cursor: default; opacity: 0.5; }

/* ── Screen panels ───────────────────────────────────────────────────── */
.screen         { display: none; }
.screen--active { display: flex; flex-direction: column; }

/* ── Control Bar ─────────────────────────────────────────────────────── */
.control-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 7px 22px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.ctrl-group { display: flex; align-items: center; gap: 7px; }

.ctrl-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.ctrl-select {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  outline: none;
  cursor: pointer;
  letter-spacing: 0.05em;
}
.ctrl-select:focus { border-color: var(--gold-dim); }

.ctrl-number {
  width: 52px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  outline: none;
  text-align: center;
}
.ctrl-number:focus { border-color: var(--gold-dim); }

.symbol-custom-input {
  width: 72px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--gold, #c9a535);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  outline: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.symbol-custom-input::placeholder { color: #444; text-transform: none; }
.symbol-custom-input:focus { border-color: var(--gold-dim); }

/* cycle P&L labels */
.cycle-labels { display: flex; gap: 8px; margin-left: 4px; flex-wrap: wrap; }

.clabel {
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 1px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.clabel.pink  { color: var(--pink);  border-color: rgba(192,96,160,0.3);  background: rgba(192,96,160,0.07); }
.clabel.blue  { color: var(--blue);  border-color: rgba(77,157,224,0.3);  background: rgba(77,157,224,0.07); }
.clabel.green { color: var(--green); border-color: rgba(63,185,80,0.3);   background: rgba(63,185,80,0.07); }
.clabel.gold  { color: var(--gold);  border-color: rgba(201,165,53,0.3);  background: rgba(201,165,53,0.07); }

.btn-group { display: flex; gap: 2px; }

.tf-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  cursor: pointer;
  transition: all .15s;
}
.tf-btn:hover  { color: var(--text); border-color: var(--gold-dim); }
.tf-btn.active { background: var(--gold-dim); border-color: var(--gold-dim); color: var(--gold); }

.refresh-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text-muted);
  font-size: 14px;
  padding: 2px 10px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
  line-height: 1.4;
}
.refresh-btn:hover { color: var(--gold); border-color: var(--gold-dim); }

.loading-spinner {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:.3} 50%{opacity:1} }

/* ── Chart Grid ──────────────────────────────────────────────────────── */
.chart-grid {
  display: grid;
  grid-template-rows: 28% 24% 24% 24%;
  height: var(--chart-h); /* = 100vh - topbar - nav - ctrl-bar */
  overflow: hidden;
  gap: 1px;
  background: var(--border);
}

.chart-panel {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.panel-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  padding: 5px 14px 3px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  flex-shrink: 0;
}
.panel-label--pink  { color: var(--pink); }
.panel-label--blue  { color: var(--blue); }
.panel-label--green { color: var(--green); }

.chart-canvas { flex: 1; width: 100%; min-height: 0; position: relative; }

/* ── Chart Quote Bar (live bid/ask/last/change overlay in panel headers) ── */
.chart-quote-bar {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.q-time   { color: #444; font-size: 10px; }
.q-bid    { color: #7ec8f0; font-weight: 700; }
.q-ask    { color: #e09050; font-weight: 700; }
.q-last   { color: var(--text); font-size: 13px; font-weight: 700; }
.q-chg    { font-size: 11px; }
.q-chg.up { color: var(--green); }
.q-chg.dn { color: var(--red); }
.q-label  { color: #555; margin-right: 2px; }
.q-sep    { color: var(--border); }

/* ── Error Toast ─────────────────────────────────────────────────────── */
.error-toast {
  position: fixed;
  bottom: 20px; right: 20px;
  background: #100808;
  border: 1px solid var(--red);
  border-radius: 2px;
  color: var(--red);
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 10px 16px;
  z-index: 999;
  max-width: 360px;
}
.error-toast.hidden { display: none; }

/* ── VRB Levels screen ───────────────────────────────────────────────── */
#screen-vrb { height: var(--screen-h); overflow-y: auto; }

.vrb-wrap { padding: 24px 28px 40px; max-width: 1200px; }

.vrb-header    { margin-bottom: 18px; }
.vrb-title-row { display: flex; align-items: baseline; gap: 16px; margin-bottom: 6px; flex-wrap: wrap; }
.vrb-title     { font-family: var(--font-serif); font-size: 20px; color: var(--text); font-weight: 700; margin: 0; }
.vrb-meta      { font-size: 11px; color: var(--text-muted); letter-spacing: 0.05em; }
.vrb-sub       { font-size: 11px; color: var(--text-dim); letter-spacing: 0.05em; }
.vrb-refresh   { margin-left: auto; }
.vrb-footer    { margin-top: 14px; font-size: 11px; color: var(--text-dim); letter-spacing: 0.04em; }

.bt-section-divider {
  display: flex; align-items: center; gap: 16px;
  margin: 40px 0 20px;
  font-size: 9px; letter-spacing: 0.22em; color: var(--text-dim); text-transform: uppercase;
}
.bt-section-divider::before,
.bt-section-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.bt-layout { max-width: 1200px; }

.vrb-table-wrap { border: 1px solid var(--border); border-radius: 2px; overflow: hidden; }

.vrb-table { width: 100%; border-collapse: collapse; font-size: 13px; }

.vrb-table thead tr { background: var(--bg-elevated); border-bottom: 1px solid var(--border); }

.vrb-table th {
  padding: 10px 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}
.vt-left   { text-align: left; }
.vt-right  { text-align: right; }
.vt-center { text-align: center; }

.vrb-table tbody tr { border-bottom: 1px solid rgba(28,28,28,0.6); transition: background .1s; }
.vrb-table tbody tr:nth-child(odd)  { background: transparent; }
.vrb-table tbody tr:nth-child(even) { background: rgba(14,14,14,0.5); }
.vrb-table tbody tr:hover           { background: rgba(201,165,53,0.04); }

.vrb-table td { padding: 12px 16px; white-space: nowrap; }

.vt-sym     { font-weight: 700; color: var(--text); letter-spacing: 0.06em; }
.vt-micro   { font-size: 11px; color: var(--text-dim); margin-left: 8px; letter-spacing: 0.04em; }
.vt-range   { color: var(--gold);       font-weight: 600; font-variant-numeric: tabular-nums; }
.vt-long    { color: var(--green);      font-weight: 600; font-variant-numeric: tabular-nums; }
.vt-short   { color: var(--red);        font-weight: 600; font-variant-numeric: tabular-nums; }
.vt-sl      { color: var(--text-muted); font-weight: 600; font-variant-numeric: tabular-nums; }
.vt-target  { color: var(--green);      font-weight: 600; font-variant-numeric: tabular-nums; }
.vt-dash    { color: var(--text-dim); }
.vt-bullish { color: var(--green); font-weight: 700; letter-spacing: 0.1em; }
.vt-bearish { color: var(--red);   font-weight: 700; letter-spacing: 0.1em; }
.vt-neutral { color: var(--text-dim); }

/* ── Login page ──────────────────────────────────────────────────────── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.login-card { width: 340px; background: var(--bg-surface); border: 1px solid var(--border); padding: 52px 40px; }

.login-brand     { text-align: center; margin-bottom: 10px; }
.login-brand-name { font-family: var(--font-serif); font-size: 26px; color: var(--gold); letter-spacing: 0.15em; }
.login-brand-sub { font-size: 11px; letter-spacing: 0.3em; color: var(--text-muted); text-transform: uppercase; margin-top: 6px; display: block; }
.login-divider   { border: none; border-top: 1px solid var(--border); margin: 24px 0; }
.login-label     { display: block; font-size: 11px; letter-spacing: 0.2em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 8px; }

.login-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 1px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px 12px;
  outline: none;
  transition: border-color .15s;
}
.login-input:focus { border-color: var(--gold-dim); }

.login-error  { font-size: 11px; color: var(--red); margin-top: 8px; min-height: 16px; }

.login-btn {
  width: 100%;
  margin-top: 22px;
  background: var(--gold);
  color: #0a0a0a;
  border: none;
  border-radius: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 12px;
  cursor: pointer;
  transition: background .15s;
}
.login-btn:hover { background: #e0b840; }

.login-footer { text-align: center; font-size: 11px; color: var(--text-dim); letter-spacing: 0.1em; margin-top: 28px; }

/* ── Price panel SD tag row (TOS-style) ───────────────────────────────── */
.panel-label--price {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.sd-tag-row { display: flex; gap: 3px; flex-wrap: wrap; }

.sd-tag {
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  padding: 1px 8px;
  white-space: nowrap;
  border-radius: 1px;
}

.sd-tag--blue  { background: #1a4a7a; color: #7ec8f0; border: 1px solid #4d9de0; }
.sd-tag--gold  { background: #3a2a06; color: #e0b840; border: 1px solid #c9a535; }
.sd-tag--green { background: #0d3318; color: #56d472; border: 1px solid #3fb950; }
.sd-tag--pink  { background: #3a1530; color: #d870c0; border: 1px solid #c060a0; }

/* ── STD DEV / VWAP — IV SD Levels Strip ────────────────────────────── */
.sdv-levels-strip {
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 14px 22px 16px;
  flex-shrink: 0;
}

.sdv-levels-meta {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.sdv-levels-strip .chart-quote-bar { margin-top: 6px; }

.sdv-levels-sym  { font-family: var(--font-serif); font-size: 16px; color: var(--gold); font-weight: 700; letter-spacing: 0.08em; }
.sdv-levels-px   { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.sdv-levels-px strong { color: var(--text); font-size: 14px; }
.sdv-levels-iv   { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.sdv-levels-iv strong { color: var(--text-muted); }

/* Compact levels table */
.sdv-lvl-table {
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 4px;
}

.sdv-lvl-table th {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  font-weight: 600;
  padding: 0 20px 8px 0;
  text-align: left;
  text-transform: uppercase;
}

.sdv-lt-val { text-align: right; padding-right: 20px; }

.sdv-lvl-table td {
  padding: 7px 20px 7px 0;
  border-bottom: 1px solid rgba(28,28,28,0.6);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sdv-lt-label { font-size: 11px; color: var(--text-dim); letter-spacing: 0.1em; text-transform: uppercase; min-width: 100px; }
.sdv-lt-val   { font-size: 13px; font-weight: 700; min-width: 110px; }

.sdv-lt-price-row td { color: var(--text); border-bottom: 1px solid var(--gold-dim); border-top: 1px solid var(--gold-dim); }
.sdv-lt-price-row .sdv-lt-label { color: var(--gold); font-weight: 700; }

/* ── Risk Calculator screen ──────────────────────────────────────────── */
#screen-calc { height: var(--screen-h); overflow-y: auto; }

.calc-wrap   { padding: 20px 28px 40px; }

.calc-header { margin-bottom: 18px; }
.calc-title  { font-family: var(--font-serif); font-size: 20px; color: var(--text); font-weight: 700; margin: 0 0 4px; }
.calc-sub    { font-size: 11px; color: var(--text-dim); letter-spacing: 0.05em; }

.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 620px) minmax(460px, 1fr);
  gap: 24px;
  align-items: start;
}

/* Left column — 2-column grid */
.calc-left {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}
.calc-col       { display: flex; flex-direction: column; gap: 14px; }
.calc-full-width { grid-column: 1 / -1; }

.calc-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 18px 20px;
}

.calc-panel-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.calc-row-label { font-size: 12px; color: var(--text-muted); }

.calc-row-input {
  display: flex;
  align-items: center;
  gap: 5px;
}

.calc-prefix, .calc-suffix {
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.calc-input {
  width: 80px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 8px;
  text-align: right;
  outline: none;
}
.calc-input:focus { border-color: var(--gold-dim); }

.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}

.calc-result-label { font-size: 12px; color: var(--text-muted); }

.calc-result-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.calc-result-big { font-size: 16px; font-weight: 700; }

.calc-hint {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.calc-dd-bar-wrap  { margin-top: 14px; }
.calc-dd-bar-label { font-size: 10px; color: var(--text-dim); letter-spacing: 0.15em; margin-bottom: 6px; text-transform: uppercase; }
.calc-dd-bar-track { height: 7px; background: var(--border); border-radius: 2px; overflow: hidden; }
.calc-dd-bar-fill  { height: 100%; border-radius: 2px; transition: width 0.4s, background 0.4s; width: 0%; }
.calc-dd-bar-range { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-dim); margin-top: 4px; font-family: var(--font-mono); }

.calc-scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.calc-reality {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(201,165,53,0.04);
  border: 1px solid rgba(201,165,53,0.18);
  padding: 14px 16px;
}

.calc-reality-icon  { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.calc-reality-title { font-size: 12px; font-weight: 700; color: var(--gold); margin-bottom: 5px; letter-spacing: 0.05em; }
.calc-reality-body  { font-size: 12px; color: var(--text-muted); line-height: 1.65; }
.calc-reality-body strong { color: var(--text); }

/* Right column — equity chart */
.calc-right {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
}

.calc-chart-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.calc-chart-title { font-size: 11px; letter-spacing: 0.18em; color: var(--text-dim); text-transform: uppercase; }
.calc-chart-sub   { font-size: 11px; color: var(--text-dim); }

.equity-chart-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  height: 680px;
  position: relative;
}

.equity-chart-wrap canvas { display: block; width: 100%; height: 100%; }

.mc-explain {
  margin-top: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: #0d0d0d;
}
.mc-explain-title {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.mc-explain-body {
  font-size: 11px;
  line-height: 1.65;
  color: #6a6058;
}
.mc-gold { color: #c9a535; }

.hidden { display: none !important; }

/* ── STD DEV / VWAP screen ──────────────────────────────────────────────── */
#screen-stddev { height: var(--screen-h); }

.sdv-control-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sdv-label  { font-size: 11px; letter-spacing: 0.1em; color: var(--text-dim); text-transform: uppercase; }
.sdv-legend { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-muted); }
.sdv-dot    { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.sdv-charts {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sdv-panel  { display: flex; flex-direction: column; min-height: 0; }
.sdv-upper  { flex: 1; border-bottom: 1px solid var(--border); }
.sdv-lower  { flex: 1; }
.sdv-upper[style*="display: none"] ~ .sdv-lower { flex: 1 1 100%; }

.sdv-canvas { flex: 1; min-height: 0; width: 100%; overflow: hidden; }


/* ── Spread Chart screen ─────────────────────────────────────────────── */
#screen-spread { height: var(--screen-h); }

.spr-grid {
  display: grid;
  grid-template-rows: 1fr 1.4fr 1fr;
  height: var(--chart-h);
}

.spr-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-bottom: 1px solid var(--border);
}
.spr-panel:last-child { border-bottom: none; }

.panel-label--spread {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-right: 14px;
}

.spr-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.spr-leg-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.spr-leg-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.spr-leg-dash {
  display: inline-block;
  width: 14px;
  height: 0;
  border-top: 2px dashed;
  flex-shrink: 0;
}

.spr-labels {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.ctrl-ratio-sep {
  color: var(--text-muted);
  font-size: 14px;
  padding: 0 3px;
}
.spr-mean-label {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}
.spr-mean-label strong {
  color: var(--text);
  font-weight: normal;
}

/* Spread price panel collapsed state */
.spr-grid--no-price { grid-template-rows: 1.4fr 1fr; }
.spr-grid--no-price #spr-panel-price { display: none; }

/* ── VRP screen ──────────────────────────────────────────────────────── */
#screen-vrp { height: var(--screen-h); }

.vrp-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap;
  min-height: 36px;
}

.vrp-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 2px;
  border: 1px solid var(--border-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: all .15s;
  background: var(--bg-elevated);
  color: var(--text-muted);
}
.vrp-chip:hover { border-color: var(--gold-dim); }
.vrp-chip.active { border-color: var(--gold); color: var(--gold); }
.vrp-chip.sig-green { background: rgba(63,185,80,0.12); border-color: rgba(63,185,80,0.5); color: #3fb950; }
.vrp-chip.sig-green.active { border-color: #3fb950; box-shadow: 0 0 8px rgba(63,185,80,0.3); }
.vrp-chip.sig-red { background: rgba(248,81,73,0.12); border-color: rgba(248,81,73,0.4); color: #f85149; }
.vrp-chip.sig-red.active { border-color: #f85149; }

.vrp-chip-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.vrp-outer {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: 1px;
  background: var(--border);
}

.vrp-price-wrap {
  height: 28%;
  flex-shrink: 0;
}

.vrp-charts {
  display: grid;
  grid-template-rows: 1.4fr 1fr;
  flex: 1;
  min-height: 0;
}

.vrp-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-bottom: 1px solid var(--border);
}
.vrp-panel:last-child { border-bottom: none; }

.panel-label--vrp {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-right: 14px;
  flex-wrap: wrap;
}

.vrp-legend {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 10px;
  color: var(--text-muted);
}
.vrp-leg-item { display: flex; align-items: center; gap: 5px; }
.vrp-leg-dot  { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.vrp-vals {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}
.panel-label--vrp .chart-quote-bar { margin-left: auto; }

.vrp-er-val {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
}

.vrp-sym-checks {
  display: flex;
  align-items: center;
  gap: 12px;
}
.vrp-chk {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: 0.08em;
}
.vrp-chk input[type="checkbox"] {
  accent-color: var(--gold);
  cursor: pointer;
}

/* ── BACKTESTS screen ────────────────────────────────────────────────── */
.bt-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  height: var(--screen-h);
  gap: 1px;
  background: var(--border);
}

.bt-sidebar {
  background: var(--bg);
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bt-card {
  width: 100%;
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s;
}
.bt-card:hover   { border-color: #333; }
.bt-card.active  { border-color: #c9a535; background: #111008; }
.bt-card.soon    { opacity: 0.55; }

.bt-card-sym  { font-size: 14px; font-weight: 700; color: #c9a535; letter-spacing: 0.08em; }
.bt-card-sub  { font-size: 9px; color: var(--text-dim); letter-spacing: 0.14em; margin-bottom: 6px; }
.bt-card-pnl  { font-size: 12px; color: #3fb950; font-family: 'SF Mono','Fira Code',monospace; }
.bt-card-pnl.dim { color: var(--text-dim); }
.bt-card-wr   { font-size: 9px; color: var(--text-dim); margin-top: 2px; }
.bt-card-pf   { font-size: 9px; color: var(--text-dim); }

.bt-main {
  background: var(--bg);
  overflow-y: auto;
  padding: 24px 28px;
}

.bt-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.bt-detail-sym   { font-size: 22px; font-weight: 700; color: #c9a535; letter-spacing: 0.1em; margin-right: 12px; }
.bt-detail-name  { font-size: 13px; color: var(--text-primary); }
.bt-detail-tf    { display: block; font-size: 10px; color: var(--text-dim); margin-top: 4px; letter-spacing: 0.12em; }
.bt-detail-dates { display: block; font-size: 10px; color: var(--text-dim); }
.bt-detail-pnl   { font-size: 28px; font-weight: 700; font-family: 'SF Mono','Fira Code',monospace; white-space: nowrap; }
.bt-detail-pnl.pos { color: #3fb950; }
.bt-detail-pnl.neg { color: #f85149; }

.bt-risk-note {
  background: #1a0e00;
  border: 1px solid #4a2c00;
  color: #e07b30;
  font-size: 10px;
  line-height: 1.6;
  padding: 10px 14px;
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.bt-stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border);
  margin-bottom: 24px;
}
.bt-stat {
  background: var(--bg);
  padding: 12px 14px;
}
.bt-stat-label { font-size: 8px; letter-spacing: 0.18em; color: var(--text-dim); text-transform: uppercase; margin-bottom: 6px; }
.bt-stat-val   { font-size: 14px; font-family: 'SF Mono','Fira Code',monospace; color: #c8c0b8; }
.bt-stat-val.pos  { color: #3fb950; }
.bt-stat-val.neg  { color: #f85149; }
.bt-stat-val.warn { color: #e07b30; }

.bt-curve-wrap { }
.bt-curve-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.bt-curve-canvas-wrap {
  background: #0a0a0a;
  border: 1px solid var(--border);
  height: 300px;
  position: relative;
}
.bt-curve-canvas-wrap canvas { display: block; width: 100%; height: 100%; }

.bt-coming-soon {
  padding: 40px 0;
  max-width: 520px;
}
.bt-cs-label   { font-size: 9px; letter-spacing: 0.25em; color: #c9a535; margin-bottom: 12px; }
.bt-cs-name    { font-size: 20px; color: var(--text-primary); margin-bottom: 24px; }
.bt-cs-section { margin-bottom: 20px; }
.bt-cs-heading { font-size: 10px; letter-spacing: 0.14em; color: #c8c0b8; text-transform: uppercase; margin-bottom: 8px; }
.bt-cs-body    { font-size: 12px; color: var(--text-dim); line-height: 1.7; }

/* ── SIGNAL BOSS screen ─────────────────────────────────────────────────── */
.sb-wrap {
  display: flex;
  flex-direction: column;
  height: var(--screen-h);
  overflow-y: auto;
}

.sb-conditions {
  padding: 32px 40px;
  max-width: 900px;
  width: 100%;
}

.sb-placeholder {
  color: var(--text-dim);
  font-size: 12px;
  padding: 40px 0;
}

/* Header */
.sb-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.sb-header-title {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.sb-header-sym {
  font-size: 16px;
  font-weight: 700;
  color: #c9a535;
  letter-spacing: 0.1em;
}
.sb-header-time {
  font-size: 11px;
  color: var(--text-dim);
  font-family: 'SF Mono', 'Fira Code', monospace;
  margin-left: auto;
}

/* Condition rows */
.sb-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 28px;
}
.sb-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid #111;
  gap: 24px;
}
.sb-row-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.sb-row-val {
  font-size: 12px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: #c8c0b8;
  line-height: 1.5;
}

/* Cycle chips */
.sb-cycle-chip {
  display: inline-block;
  margin-right: 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* State colors */
.sb-up   { color: #3fb950; }
.sb-dn   { color: #f85149; }
.sb-neu  { color: #8a8070; }
.sb-warn { color: #e07b30; }
.sb-na   { color: #444; font-style: italic; }

/* Overall read */
.sb-overall {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  background: #0d0d0d;
  margin-top: 8px;
}
.sb-overall-label {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.sb-overall-text {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.sb-score {
  margin-left: auto;
  font-size: 11px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--text-dim);
}
.sb-read-bull .sb-overall-text { color: #3fb950; }
.sb-read-bear .sb-overall-text { color: #f85149; }
.sb-read-neu  .sb-overall-text { color: #8a8070; }