/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  --green:      #1D9E75;
  --coral:      #D85A30;
  --blue:       #378ADD;
  --amber:      #EF9F27;
  --bg:         #0f1117;
  --surface:    #1a1d27;
  --border:     #2a2d3a;
  --text:       #e8eaf0;
  --text-muted: #8890a4;
  --radius:     8px;
  --gap:        16px;
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  padding-bottom: 32px;
}

/* ── Header bar ──────────────────────────────────────────────────────────── */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__identity {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.header__pair {
  color: var(--text-muted);
  font-size: 15px;
}

.header__paper-badge {
  background: rgba(239, 159, 39, 0.15);
  color: var(--amber);
  border: 1px solid var(--amber);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header__right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__updated {
  color: var(--text-muted);
  font-size: 14px;
}

.header__status-pill {
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.header__status-pill[data-mode="active"] {
  background: rgba(29, 158, 117, 0.15);
  color: var(--green);
  border: 1px solid var(--green);
}

.header__status-pill[data-mode="holding"] {
  background: rgba(216, 90, 48, 0.15);
  color: var(--coral);
  border: 1px solid var(--coral);
}

/* ── Stat cards ──────────────────────────────────────────────────────────── */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  padding: var(--gap) 24px;
}

@media (max-width: 768px) {
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.stat-card__label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.stat-card__value {
  font-size: 22px;
  font-weight: 600;
}

.stat-card__value.positive { color: var(--green); }
.stat-card__value.negative { color: var(--coral); }

/* ── Panels ──────────────────────────────────────────────────────────────── */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 24px var(--gap);
  padding: 16px;
}

.panel__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.panel__toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.panel__summary {
  margin-top: 8px;
  font-size: 15px;
  color: var(--text-muted);
}

.panel__annotation {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* ── Toolbar buttons ─────────────────────────────────────────────────────── */
.toolbar-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.toolbar-btn:hover, .toolbar-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

/* ── Charts ──────────────────────────────────────────────────────────────── */
.chart-svg {
  width: 100%;
  height: 320px;
  display: block;
}

.chart-svg--small {
  height: 160px;
}

/* ── Signal row (Pressure + Build side by side) ─────────────────────────── */
.signal-row {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: var(--gap);
  margin: var(--gap) 24px;
}

.signal-row .panel { margin: 0; }

@media (max-width: 900px) {
  .signal-row { grid-template-columns: 1fr; }
}

/* ── Signal Build Chart ──────────────────────────────────────────────────── */
#panel-signal-build {
  display: flex;
  flex-direction: column;
}

#signal-build-chart {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sbc__svg {
  display: block;
  width: 100%;
  flex: 1;
  min-height: 0;
}


/* ── Signal Pressure Panel ───────────────────────────────────────────────── */

.spp__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.spp__header .panel__title {
  margin-bottom: 0;
}

.spp__svg {
  display: block;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 200 / 140;
  margin: 0 auto;
}

.spp__badge {
  display: inline-block;
  background: rgba(55, 138, 221, 0.15);
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.spp__sub {
  font-size: 14px;
  text-align: center;
  padding-top: 8px;
}

/* ── Trade table ─────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; }

.trade-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.trade-table th, .trade-table td {
  padding: 6px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}

.trade-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.trade-table td:first-child,
.trade-table th:first-child { text-align: left; }

.trade-table tr.ranging { background: rgba(216, 90, 48, 0.04); }

.fee-drag-bar {
  display: inline-block;
  height: 8px;
  border-radius: 2px;
  vertical-align: middle;
  margin-right: 4px;
}

.fee-drag-bar.normal   { background: var(--amber); }
.fee-drag-bar.marginal { background: orange; }
.fee-drag-bar.loss     { background: var(--coral); }

/* ── Ranging warning banner ──────────────────────────────────────────────── */
.ranging-warning {
  background: rgba(216, 90, 48, 0.1);
  border: 1px solid var(--coral);
  border-radius: 4px;
  padding: 8px 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--coral);
}

.ranging-warning.hidden { display: none; }

/* ── Trade summary ───────────────────────────────────────────────────────── */
.trade-summary {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* ── Signals log ─────────────────────────────────────────────────────────── */
.signals-log {
  list-style: none;
}

.signals-log li {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.signals-log li:last-child { border-bottom: none; }

.signal-type.buy  { color: var(--green); font-weight: 600; }
.signal-type.sell { color: var(--coral); font-weight: 600; }
.signal-type.hold { color: var(--text-muted); }

/* ── Bottom row ──────────────────────────────────────────────────────────── */
.bottom-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  margin: 0 24px;
}

/* Panels inside .bottom-row must not carry their own horizontal margin */
.bottom-row .panel { margin: 0; }

@media (max-width: 768px) {
  .bottom-row { grid-template-columns: 1fr; }
  .bottom-row .panel { margin: 0 0 var(--gap); }
}

/* ── Offline banner ──────────────────────────────────────────────────────── */
.offline-banner {
  display: none;
  background: #c0392b;
  color: #fff;
  text-align: center;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}