:root {
  --bg: #0a0e14;
  --bg-elevated: #11161f;
  --bg-sunken: #060910;
  --border: #1f2733;
  --border-strong: #2a3441;
  --text: #e6edf3;
  --text-muted: #8b96a5;
  --text-dim: #5d6878;
  --accent: #58a6ff;
  --accent-dim: rgba(88, 166, 255, 0.15);
  --good: #3fb950;
  --good-bg: rgba(63, 185, 80, 0.12);
  --good-bg-strong: rgba(63, 185, 80, 0.22);
  --bad: #f85149;
  --bad-bg: rgba(248, 81, 73, 0.13);
  --bad-bg-strong: rgba(248, 81, 73, 0.24);
  --warn: #d29922;
  --warn-bg: rgba(210, 153, 34, 0.15);
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  font-size: 13px;
  line-height: 1.45;
}

.page {
  max-width: 1640px;
  margin: 0 auto;
  padding: 24px 28px 64px;
}

/* ---------- Header ---------- */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.page-header h1 {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.page-header .subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0;
}
.page-header .badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.badge {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px 10px;
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}
.badge strong { color: var(--text); font-weight: 600; }

/* ---------- Section ---------- */
.section {
  margin-bottom: 36px;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 2px;
}
.section-note {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.toolbar input[type="text"],
.toolbar select {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 7px 10px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.1s ease;
}
.toolbar input[type="text"]:focus,
.toolbar select:focus {
  border-color: var(--accent);
}
.toolbar input[type="text"] {
  min-width: 220px;
}
.toolbar select {
  cursor: pointer;
  padding-right: 26px;
}
.toolbar .toolbar-spacer { flex: 1; }
.toolbar-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}
.toolbar-checkbox input { accent-color: var(--accent); }
.btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 7px 14px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.1s ease, border-color 0.1s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:hover {
  background: var(--border);
  border-color: var(--accent);
}
.btn-primary {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent);
  color: #08111c;
}
.btn-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
}
.btn small {
  color: var(--text-dim);
  font-size: 11px;
  margin-left: 2px;
}
.csv-count {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  opacity: 0.75;
  margin-left: 2px;
}
.btn.filters-active {
  border-color: var(--good);
  box-shadow: 0 0 0 1px rgba(63, 185, 80, 0.2);
}

/* ---------- Range filters row ---------- */
.range-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.range-filter {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.1s ease;
}
.range-filter.active { border-color: var(--accent); }
.range-filter-label {
  font-size: 10.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
}
.range-filter-label .range-unit {
  font-size: 9.5px;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}
.range-filter-inputs {
  display: flex;
  gap: 4px;
  align-items: center;
}
.range-filter-inputs input {
  flex: 1;
  min-width: 0;
  width: 50%;
  background: var(--bg-sunken);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 4px 6px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  font-variant-numeric: tabular-nums;
  outline: none;
}
.range-filter-inputs input:focus { border-color: var(--accent); }
.range-filter-inputs input::placeholder { color: var(--text-dim); }
.range-filter-inputs .range-sep {
  font-size: 11px;
  color: var(--text-dim);
}

/* ---------- Table ---------- */
.table-wrap {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: auto;
  max-height: 78vh;
  position: relative;
}
table.depth-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 12.5px;
}
table.depth-table th,
table.depth-table td {
  padding: 8px 10px;
  text-align: right;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
table.depth-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: #161c25;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--border-strong);
  transition: color 0.1s ease;
}
table.depth-table th:hover { color: var(--text); }
table.depth-table th .sort-indicator {
  display: inline-block;
  width: 10px;
  margin-left: 4px;
  color: var(--accent);
  font-size: 9px;
  opacity: 0;
}
table.depth-table th.sorted .sort-indicator { opacity: 1; }
table.depth-table th .col-sub {
  display: block;
  font-weight: 400;
  color: var(--text-dim);
  font-size: 10.5px;
  letter-spacing: 0;
}
table.depth-table th.col-left,
table.depth-table td.col-left {
  text-align: left;
}
table.depth-table th.col-fixed-1 {
  position: sticky;
  left: 0;
  z-index: 3;
  background: #161c25;
}
table.depth-table th.col-fixed-2 {
  position: sticky;
  left: 88px;
  z-index: 3;
  background: #161c25;
}
table.depth-table td.col-fixed-1 {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--bg-elevated);
}
table.depth-table td.col-fixed-2 {
  position: sticky;
  left: 88px;
  z-index: 1;
  background: var(--bg-elevated);
}
table.depth-table tbody tr:hover td {
  background: #1a2230;
}
table.depth-table tbody tr:hover td.col-fixed-1,
table.depth-table tbody tr:hover td.col-fixed-2 {
  background: #1a2230;
}

table.depth-table td.numeric { font-variant-numeric: tabular-nums; }
table.depth-table td.ticker {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 600;
  color: var(--accent);
  font-size: 12.5px;
}
table.depth-table td.muted { color: var(--text-dim); }
table.depth-table td.bad-bg { background-color: var(--bad-bg) !important; color: var(--bad); font-weight: 600; }
table.depth-table td.good-bg { background-color: var(--good-bg) !important; color: var(--good); font-weight: 600; }
table.depth-table tbody tr:hover td.bad-bg { background-color: var(--bad-bg-strong) !important; }
table.depth-table tbody tr:hover td.good-bg { background-color: var(--good-bg-strong) !important; }

/* Cell with delta chip */
.cell-with-delta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}
.delta-chip {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.delta-chip.up { background: var(--bad-bg); color: var(--bad); }
.delta-chip.down { background: var(--good-bg); color: var(--good); }
.delta-chip.flat { background: var(--bg-sunken); color: var(--text-dim); }

/* Market type badge */
.mtype {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.mtype-cross    { background: rgba(56,139,253,0.15); color: var(--accent); border: 1px solid rgba(56,139,253,0.30); }
.mtype-isolated { background: rgba(210,153,34,0.15); color: var(--warn);   border: 1px solid rgba(210,153,34,0.30); }
.mtype-unknown  { background: rgba(120,120,120,0.10); color: var(--text-dim); border: 1px solid rgba(120,120,120,0.25); }

tr.api-only td { color: var(--text-dim); font-style: italic; }
tr.api-only td.ticker { color: var(--text-muted); font-style: normal; }
tr.api-only td.oi-cell { color: var(--text); font-style: normal; }

/* ---------- Tooltip header info ---------- */
.col-info {
  display: inline-block;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--border-strong);
  color: var(--text-muted);
  font-size: 9px;
  line-height: 13px;
  text-align: center;
  margin-left: 4px;
  cursor: help;
  font-weight: 700;
  vertical-align: middle;
}
th .col-info:hover { background: var(--accent); color: #06080c; }

/* ---------- Footer / methodology ---------- */
.methodology {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 18px;
  margin-top: 16px;
}
.methodology summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  font-size: 13px;
  list-style: none;
}
.methodology summary::-webkit-details-marker { display: none; }
.methodology summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 8px;
  color: var(--accent);
  transition: transform 0.15s ease;
}
.methodology[open] summary::before { transform: rotate(90deg); }
.methodology ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
}
.methodology li { margin: 4px 0; }
.methodology code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  background: var(--bg-sunken);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--text);
}
.methodology b { color: var(--text); }

/* ---------- Stats strip ---------- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
}
.stat-card .stat-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.stat-card .stat-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.stat-card .stat-value.bad { color: var(--bad); }
.stat-card .stat-value.good { color: var(--good); }
.stat-card .stat-detail {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ---------- Charts ---------- */
.chart-tip {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 11.5px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.chart-tip b { color: var(--text); }
.chart-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  min-height: 420px;
}

/* ---------- Loading / empty states ---------- */
.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 48px 24px;
  font-size: 13px;
}

/* ---------- Footer ---------- */
.page-footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 11px;
  text-align: center;
}
.page-footer a { color: var(--text-muted); text-decoration: none; }
.page-footer a:hover { color: var(--accent); }

/* Mobile */
@media (max-width: 720px) {
  .page { padding: 16px 12px 40px; }
  .page-header { flex-direction: column; }
  .toolbar input[type="text"] { min-width: 0; flex: 1; }
  table.depth-table th.col-fixed-1,
  table.depth-table td.col-fixed-1,
  table.depth-table th.col-fixed-2,
  table.depth-table td.col-fixed-2 {
    position: static;
  }
}