:root {
  --bg: #0b0e11;
  --bg-elevated: #101419;
  --panel: #13161c;
  --panel-hover: #181c24;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.1);
  --text: #e6edf3;
  --muted: #7d8590;
  --muted-2: #5c6570;
  --accent: #50d2c1;
  --accent-dim: rgba(80, 210, 193, 0.12);
  --buy: #3fdca4;
  --buy-dim: rgba(63, 220, 164, 0.14);
  --sell: #ff5c5c;
  --sell-dim: rgba(255, 92, 92, 0.14);
  --warn: #f0b429;
  --nav-h: 80px;
  --market-h: 52px;
  --book-w: 340px;
  --trade-w: 300px;
  --bottom-h: 220px;
  --font: Inter, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.35;
  overflow: hidden;
  height: 100vh;
}

button,
input,
select {
  font: inherit;
}

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.hidden {
  display: none !important;
}

/* ── Testnet strip ── */
.testnet-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 26px;
  background: rgba(240, 180, 41, 0.08);
  border-bottom: 1px solid rgba(240, 180, 41, 0.2);
  color: var(--warn);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warn);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

/* ── App shell ── */
.hl-app {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 26px);
}

/* ── Nav ── */
.hl-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}

.hl-nav-left,
.hl-nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hl-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.hl-logo img {
  height: clamp(60px, 8vh, 84px);
  width: auto;
  max-width: min(320px, 62vw);
  display: block;
  object-fit: contain;
  object-position: left center;
  filter: brightness(0) invert(1);
  opacity: 0.98;
}

.hl-nav-links {
  display: flex;
  gap: 4px;
}

.hl-nav-link {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
}

.hl-nav-link.active {
  color: var(--text);
  background: var(--panel);
}

.hl-nav-link.disabled {
  pointer-events: none;
  opacity: 0.45;
}

.hl-status {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
}

.feed-online {
  color: var(--buy);
  background: var(--buy-dim);
}

.feed-fallback {
  color: var(--warn);
  background: rgba(240, 180, 41, 0.1);
}

.feed-offline {
  color: var(--sell);
  background: var(--sell-dim);
}

.hl-connect {
  padding: 7px 14px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #0b0e11;
  font-weight: 600;
  font-size: 13px;
  cursor: not-allowed;
  opacity: 0.55;
}

/* ── Market bar ── */
.hl-market-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--market-h);
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  flex-shrink: 0;
  min-width: 0;
}

.hl-market-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.hl-pair-wrap {
  position: relative;
}

.hl-pair-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
}

.hl-pair-trigger:hover {
  background: var(--panel-hover);
}

.hl-pair-symbol {
  font-size: 15px;
  letter-spacing: -0.02em;
}

.hl-pair-chevron {
  font-size: 10px;
  color: var(--muted);
}

.hl-pair-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 50;
  min-width: 160px;
  padding: 4px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.hl-pair-menu .pair-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
}

.hl-pair-menu .pair-btn:hover {
  background: var(--panel-hover);
  color: var(--text);
}

.hl-pair-menu .pair-btn.active {
  color: var(--accent);
  background: var(--accent-dim);
}

.hl-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 6px;
  border-radius: 4px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.hl-badge-warn {
  color: var(--warn);
  background: rgba(240, 180, 41, 0.1);
}

.hl-stats-scroll {
  display: flex;
  align-items: center;
  gap: 20px;
  overflow-x: auto;
  flex: 1;
  min-width: 0;
  scrollbar-width: none;
}

.hl-stats-scroll::-webkit-scrollbar {
  display: none;
}

.hl-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.hl-stat-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hl-stat-value {
  font-size: 13px;
  font-weight: 600;
}

.hl-stat-primary .hl-stat-value {
  font-size: 16px;
  font-weight: 700;
}

.hl-stat-value.up {
  color: var(--buy);
}

.hl-stat-value.down {
  color: var(--sell);
}

.hl-feed-pill {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
}

/* ── Workspace grid ── */
.hl-workspace {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--book-w) var(--trade-w);
  min-height: 0;
  overflow: hidden;
}

.hl-panel {
  border-right: 1px solid var(--border);
  background: var(--panel);
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.hl-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.hl-panel-head h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
}

.hl-panel-meta {
  font-size: 10px;
  color: var(--muted);
}

/* ── Chart ── */
.hl-chart-panel {
  background: var(--bg);
}

.hl-chart-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.hl-toolbar-left {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.hl-chart-title {
  font-weight: 700;
  font-size: 14px;
}

.hl-chart-sub {
  font-size: 11px;
  color: var(--muted);
}

.hl-intervals {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.hl-pill {
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  cursor: not-allowed;
}

.hl-pill.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.hl-legend {
  display: flex;
  gap: 12px;
  font-size: 11px;
  font-weight: 500;
}

.leg {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
}

.leg::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 1px;
}

.leg-9::before {
  background: var(--accent);
}

.leg-21::before {
  background: #6b8afd;
}

.hl-chart-area {
  flex: 1;
  min-height: 0;
  padding: 4px 2px 0;
}

#candle-chart {
  width: 100%;
  height: 100%;
  min-height: 200px;
}

.hl-mark-details {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  font-size: 11px;
}

.hl-mark-details summary {
  padding: 6px 12px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.hl-mark-details summary:hover {
  color: var(--text);
}

.hl-mark-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 12px 10px;
}

.hl-mark-grid div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hl-mark-grid span {
  color: var(--muted-2);
  font-size: 10px;
  text-transform: uppercase;
}

.hl-mark-grid strong {
  font-size: 12px;
}

/* ── Order book ── */
.hl-book-panel {
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.hl-book-controls {
  display: flex;
  gap: 4px;
}

.hl-book-pill {
  font-size: 10px;
  font-weight: 600;
  font-family: var(--mono);
  padding: 3px 7px;
  border-radius: 4px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.hl-book-pill.active {
  color: var(--accent);
  border-color: rgba(80, 210, 193, 0.35);
  background: var(--accent-dim);
}

.hl-book-stack {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.hl-book-head {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 6px;
  padding: 6px 12px;
  font-size: 10px;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
}

.hl-book-head span:nth-child(2),
.hl-book-head span:nth-child(3) {
  text-align: right;
}

.hl-book-side {
  flex: 1 1 0;
  overflow-y: auto;
  padding: 2px 6px;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
}

.hl-book-side::-webkit-scrollbar {
  width: 4px;
}

.hl-book-side::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}

.hl-book-side.asks {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 0;
}

.hl-book-side.bids {
  padding-top: 0;
}

.book-row {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 6px;
  align-items: center;
  min-height: 22px;
  padding: 0 6px;
  margin-bottom: 1px;
  font-size: 12px;
  line-height: 1;
  border-radius: 3px;
  cursor: default;
  transition: background 0.1s;
}

.book-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.book-cell {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.book-cell.size,
.book-cell.total {
  text-align: right;
  color: var(--text);
  font-size: 11px;
}

.book-cell.total {
  color: var(--muted);
}

.book-row .book-depth {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  border-radius: 3px;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
}

.book-row.ask .book-cell.price {
  color: var(--sell);
  font-weight: 600;
}

.book-row.bid .book-cell.price {
  color: var(--buy);
  font-weight: 600;
}

.book-row.ask .book-depth {
  background: linear-gradient(270deg, rgba(255, 92, 92, 0.22), rgba(255, 92, 92, 0.06));
}

.book-row.bid .book-depth {
  background: linear-gradient(270deg, rgba(63, 220, 164, 0.22), rgba(63, 220, 164, 0.06));
}

.hl-book-mid {
  flex-shrink: 0;
  padding: 8px 12px;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  background: rgba(80, 210, 193, 0.06);
}

.hl-book-mid-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.hl-book-mid-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.hl-book-spread {
  font-size: 10px;
  color: var(--muted);
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

/* ── Trade panel ── */
.hl-trade-panel {
  border-right: none;
  padding: 10px 12px 12px;
  gap: 10px;
  overflow-y: auto;
}

.hl-order-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 3px;
  border-radius: 8px;
  background: var(--bg);
}

.hl-order-tab {
  padding: 7px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  cursor: not-allowed;
}

.hl-order-tab.active {
  color: var(--text);
  background: var(--panel-hover);
}

.hl-side-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.side-btn {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.side-btn.long.active {
  color: var(--buy);
  border-color: rgba(63, 220, 164, 0.45);
  background: var(--buy-dim);
}

.side-btn.short.active {
  color: var(--sell);
  border-color: rgba(255, 92, 92, 0.45);
  background: var(--sell-dim);
}

.hl-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hl-field-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hl-field span {
  font-size: 11px;
  color: var(--muted);
}

.hl-field-unit {
  font-size: 11px;
  color: var(--muted-2);
}

.hl-field input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
}

.hl-field input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.hl-size-pills,
.hl-lev-pills {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}

.hl-lev-pills {
  grid-template-columns: repeat(5, 1fr);
}

.hl-size-pills button,
.hl-lev-pills button {
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  cursor: not-allowed;
}

.hl-lev-slider {
  width: 100%;
  accent-color: var(--accent);
}

.lev-display {
  font-size: 12px;
  color: var(--accent);
}

.hl-trade-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
}

.hl-trade-rows div {
  display: flex;
  justify-content: space-between;
}

.hl-trade-rows span {
  color: var(--muted);
}

.submit-btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  cursor: not-allowed;
  opacity: 0.65;
}

.submit-btn.long {
  background: var(--buy);
  color: #0b0e11;
}

.submit-btn.short {
  background: var(--sell);
  color: #fff;
}

.hl-trade-note {
  margin: 0;
  font-size: 10px;
  color: var(--muted-2);
  text-align: center;
  line-height: 1.4;
}

/* ── Bottom panel ── */
.hl-bottom-panel {
  height: var(--bottom-h);
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  border-right: none;
  background: var(--bg-elevated);
}

.hl-bottom-tabs {
  display: flex;
  gap: 0;
  padding: 0 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.bottom-tab {
  padding: 10px 14px;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: -1px;
}

.bottom-tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.bottom-tab:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.hl-table-wrap {
  flex: 1;
  overflow: auto;
}

.hl-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.hl-table th {
  position: sticky;
  top: 0;
  padding: 8px 12px;
  text-align: left;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.hl-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.hl-empty-row td {
  padding: 0;
  border: none;
}

.hl-empty {
  padding: 32px 16px;
  text-align: center;
}

.hl-empty p {
  margin: 0 0 4px;
  color: var(--text);
  font-weight: 600;
}

.hl-empty span {
  font-size: 11px;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 1200px) {
  :root {
    --book-w: 300px;
    --trade-w: 260px;
  }
}

@media (max-width: 960px) {
  body {
    overflow: auto;
    height: auto;
  }

  .hl-app {
    height: auto;
    min-height: calc(100vh - 26px);
  }

  .hl-workspace {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(360px, 50vh) auto auto;
  }

  .hl-book-panel {
    max-height: 320px;
  }

  .hl-bottom-panel {
    height: auto;
    min-height: 180px;
  }

  .hl-nav-links {
    display: none;
  }
}

@media (max-width: 600px) {
  .hl-stats-scroll {
    gap: 14px;
  }

  .hl-stat-primary .hl-stat-value {
    font-size: 14px;
  }
}