:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2333;
  --border: #30363d;
  --border-light: #21262d;
  --text: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --green: #3fb950;
  --green-dim: #1a3024;
  --red: #f85149;
  --red-dim: #3d1a1a;
  --blue: #58a6ff;
  --cyan: #4cc9f0;
  --yellow: #e3b341;
  --purple: #bc8cff;
  --accent: #1f6feb;
  --accent-hover: #388bfd;
  --header-h: 56px;
  --sidebar-w: 200px;
  --footer-h: 28px;
  --radius: 8px;
  --radius-sm: 4px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ---- HEADER ---- */
.header {
  height: var(--header-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  flex-shrink: 0;
  z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 10px; flex: 1; }
.header-center { display: flex; align-items: center; gap: 16px; }
.header-right { display: flex; align-items: center; gap: 12px; justify-content: flex-end; flex: 1; }

.logo { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; color: var(--cyan); }
.logo svg { stroke: var(--cyan); fill: none; }

.symbol-badge, .timeframe-badge {
  background: var(--border-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.price-display { display: flex; flex-direction: column; align-items: center; }
.price-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.price-value { font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--cyan); }

.mode-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--yellow);
  color: #000;
}
.mode-badge.live { background: var(--red); color: #fff; }

.status-indicator { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-secondary); }
.ws-indicator { display: flex; align-items: center; }
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}
.dot.running { background: var(--green); box-shadow: 0 0 6px var(--green); animation: pulse 2s infinite; }
.dot.stopped { background: var(--text-muted); }
.dot.error { background: var(--red); }
.dot.connected { background: var(--cyan); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---- LAYOUT ---- */
.layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ---- SIDEBAR ---- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 12px 8px;
  gap: 2px;
  flex-shrink: 0;
  overflow-y: auto;
}

.nav-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  text-align: left;
  transition: all 0.15s;
}
.nav-btn svg {
  width: 16px; height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.nav-btn:hover { background: var(--border-light); color: var(--text); }
.nav-btn.active { background: var(--accent); color: #fff; }

.sidebar-bottom { margin-top: auto; padding-top: 16px; display: flex; flex-direction: column; gap: 8px; }

.btn-start, .btn-stop, .btn-primary, .btn-secondary {
  width: 100%;
  padding: 9px 12px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
}
.btn-start { background: var(--green); color: #000; }
.btn-start:hover { background: #52d668; }
.btn-stop { background: var(--red); color: #fff; }
.btn-stop:hover { background: #ff6b63; }
.btn-primary { background: var(--accent); color: #fff; width: auto; padding: 9px 20px; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--border); color: var(--text); width: auto; padding: 7px 14px; border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-card-hover); }
.btn-manual-buy { background: var(--green); color: #000; border: none; border-radius: var(--radius-sm); padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.15s; }
.btn-manual-buy:hover { background: #52d668; }
.btn-manual-sell { background: var(--red); color: #fff; border: none; border-radius: var(--radius-sm); padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.15s; }
.btn-manual-sell:hover { background: #ff6b63; }
.hidden { display: none !important; }

/* ---- CONTENT ---- */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

/* ---- TABS ---- */
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- CARDS ---- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.card:hover { border-color: var(--border-light); background: var(--bg-card-hover); }

.card-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.card-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  line-height: 1.2;
}
.card-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.positive { color: var(--green) !important; }
.negative { color: var(--red) !important; }
.neutral { color: var(--text-secondary) !important; }

/* ---- INDICATOR CARD ---- */
.indicator-card { display: flex; flex-direction: column; }
.gauge-bar {
  position: relative;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 8px 0 2px;
}
.gauge-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: linear-gradient(to right, var(--green), var(--yellow), var(--red));
  border-radius: 2px;
  width: 100%;
}
.gauge-marker {
  position: absolute;
  top: -3px;
  width: 10px; height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  border: 2px solid var(--bg);
  transform: translateX(-50%);
  transition: left 0.5s;
}
.gauge-labels { display: flex; justify-content: space-between; font-size: 9px; color: var(--text-muted); }

/* ---- SIGNAL BADGE ---- */
.signal-badge {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-top: 4px;
}
.signal-badge.BUY { background: var(--green-dim); color: var(--green); border: 1px solid var(--green); }
.signal-badge.SELL { background: var(--red-dim); color: var(--red); border: 1px solid var(--red); }
.signal-badge.HOLD { background: var(--border-light); color: var(--text-secondary); border: 1px solid var(--border); }

/* ---- SECTION HEADER ---- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-header h2 { font-size: 14px; font-weight: 600; color: var(--text); }

.info-badge {
  font-size: 11px;
  color: var(--yellow);
  background: rgba(227,179,65,0.1);
  border: 1px solid rgba(227,179,65,0.3);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

/* ---- TABLE ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.data-table th {
  padding: 10px 12px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-card-hover); }
.empty-row { text-align: center; color: var(--text-muted); padding: 24px !important; }

.status-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}
.status-pill.open { background: rgba(88,166,255,0.15); color: var(--blue); }
.status-pill.stop_loss { background: var(--red-dim); color: var(--red); }
.status-pill.take_profit { background: var(--green-dim); color: var(--green); }
.status-pill.closed_signal { background: rgba(188,140,255,0.15); color: var(--purple); }

/* ---- CHART ---- */
.chart-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.chart-symbol { font-size: 14px; font-weight: 700; color: var(--text); }
.chart-timeframe {
  background: var(--border-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-size: 11px;
  color: var(--text-secondary);
}
.chart-legend { display: flex; gap: 12px; margin-left: auto; }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-secondary); }
.legend-dot { width: 12px; height: 2px; border-radius: 1px; display: inline-block; }

#chart-container {
  width: 100%;
  height: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.chart-panel-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 8px;
  margin-bottom: 4px;
  padding-left: 4px;
}

#rsi-chart-container {
  width: 100%;
  height: 120px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

#macd-chart-container {
  width: 100%;
  height: 120px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.indicators-row {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.indicator-mini {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.ind-label { font-size: 11px; color: var(--text-secondary); }
.ind-value { font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--cyan); }

/* ---- FILTER BUTTONS ---- */
.filter-row { display: flex; gap: 6px; }
.filter-btn {
  padding: 5px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11px;
  transition: all 0.15s;
}
.filter-btn:hover { background: var(--border-light); color: var(--text); }
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---- PAGINATION ---- */
.pagination { display: flex; gap: 6px; margin-top: 12px; justify-content: center; }
.page-btn {
  padding: 5px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
}
.page-btn:hover { background: var(--border-light); }
.page-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---- SETTINGS ---- */
.settings-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.settings-section h3 { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 14px; }
.form-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border-light); }
.form-row:last-child { border-bottom: none; }
.form-row label:first-child { font-size: 12px; color: var(--text-secondary); flex-shrink: 0; }
.form-row input, .form-row select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 12px;
  width: 120px;
  text-align: right;
}
.form-row input:focus, .form-row select:focus { outline: none; border-color: var(--accent); }
.form-actions { margin-top: 16px; }

/* Toggle switch */
.toggle { position: relative; display: inline-block; width: 40px; height: 22px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; inset: 0;
  background: var(--border);
  border-radius: 11px;
  cursor: pointer;
  transition: 0.2s;
}
.slider:before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; top: 3px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: 0.2s;
}
.toggle input:checked + .slider { background: var(--green); }
.toggle input:checked + .slider:before { transform: translateX(18px); background: #fff; }

.settings-msg {
  margin-top: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
}
.settings-msg.success { background: var(--green-dim); color: var(--green); border: 1px solid var(--green); }
.settings-msg.error { background: var(--red-dim); color: var(--red); border: 1px solid var(--red); }

/* ---- LOGS ---- */
#logs-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-family: 'Courier New', monospace;
  font-size: 11.5px;
  max-height: calc(100vh - 160px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.log-entry {
  padding: 3px 6px;
  border-radius: 3px;
  line-height: 1.5;
}
.log-entry.INFO { color: var(--text-secondary); }
.log-entry.ERROR { color: var(--red); background: var(--red-dim); }
.log-entry.WARNING { color: var(--yellow); }
.log-entry .log-time { color: var(--text-muted); margin-right: 8px; }
.log-entry .log-level { font-weight: 700; margin-right: 8px; min-width: 50px; display: inline-block; }

/* ---- FOOTER / STATUS BAR ---- */
.statusbar {
  height: var(--footer-h);
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 16px;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
}
/* Tablet: icon-only sidebar */
@media (max-width: 768px) {
  .sidebar { width: 52px; }
  .nav-btn span { display: none; }
  .sidebar-bottom .btn-start span,
  .sidebar-bottom .btn-stop span { display: none; }
}

/* Mobile bottom nav — hidden on desktop */
.mobile-nav { display: none; }
.mobile-bot-btn { display: none; }

/* ---- MOBILE (≤600px) ---- */
@media (max-width: 600px) {

  /* Full-page natural scroll */
  html, body {
    height: auto !important;
    min-height: 100%;
    overflow: auto !important;
  }

  /* Fixed header */
  .header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 48px;
    padding: 0 10px;
    gap: 8px;
    z-index: 300;
  }
  .logo span { display: none; }
  .timeframe-badge { display: none; }
  .header-center { display: none; }
  .status-indicator .status-text { display: none; }
  .symbol-badge { font-size: 11px; padding: 2px 6px; }
  .mode-badge { font-size: 9px; padding: 2px 5px; }

  /* Mobile Start/Stop buttons in header */
  .mobile-bot-btn {
    display: inline-flex;
    align-items: center;
    padding: 6px 11px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    min-height: 32px;
  }
  .mobile-bot-btn.start { background: var(--green); color: #000; }
  .mobile-bot-btn.stop  { background: var(--red);   color: #fff; }

  /* Desktop sidebar: completely hidden */
  .sidebar { display: none !important; }
  .statusbar { display: none; }

  /* Layout: plain block so content flows naturally */
  .layout {
    display: block !important;
    overflow: visible !important;
    flex: none !important;
    height: auto !important;
  }

  /* Content: below fixed header, above fixed bottom nav */
  .content {
    display: block !important;
    overflow: visible !important;
    flex: none !important;
    margin-top: 48px;
    padding: 12px 10px 68px;
  }

  /* Mobile bottom nav */
  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 56px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    z-index: 300;
    padding: 0;
  }
  .mobile-nav .nav-btn {
    flex: 1;
    flex-direction: column;
    gap: 2px;
    padding: 6px 2px;
    font-size: 9px;
    border-radius: 0;
    align-items: center;
    justify-content: center;
    border-top: 2px solid transparent;
    width: auto;
  }
  .mobile-nav .nav-btn span { display: inline !important; }
  .mobile-nav .nav-btn svg { width: 20px; height: 20px; }
  .mobile-nav .nav-btn.active {
    background: transparent;
    color: var(--cyan);
    border-top-color: var(--cyan);
  }

  /* Cards: 2×2 */
  .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .card { padding: 10px 12px; }
  .card-value { font-size: 17px; }
  .card-label { font-size: 10px; }
  .card-sub { font-size: 10px; }

  /* Section header */
  .section-header { flex-wrap: wrap; gap: 8px; }
  .section-header > div { width: 100%; display: flex; gap: 8px; }
  .btn-manual-buy, .btn-manual-sell { flex: 1; padding: 11px 8px; font-size: 13px; min-height: 42px; }

  /* Tables */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .data-table td, .data-table th { padding: 8px 7px; font-size: 11px; }

  /* Charts */
  #chart-container { height: 220px; }
  #rsi-chart-container, #macd-chart-container { height: 85px; }
  .chart-controls { flex-wrap: wrap; gap: 6px; }
  .chart-legend { margin-left: 0; }
  .indicators-row { gap: 8px; }

  /* Settings */
  .settings-grid { grid-template-columns: 1fr; gap: 10px; }
  .settings-section { padding: 12px; }
  .form-row { padding: 10px 0; }
  .form-row input, .form-row select { width: 110px; }
  .btn-primary { width: 100%; padding: 12px; font-size: 14px; }

  /* Filter */
  .filter-row { overflow-x: auto; flex-wrap: nowrap; }
  .filter-btn { white-space: nowrap; padding: 7px 14px; }

  /* Logs */
  #logs-container { max-height: none; font-size: 10.5px; }

  /* Modals: slide from bottom */
  .modal-overlay { align-items: flex-end; padding: 0; }
  .modal { width: 100%; max-width: 100%; border-radius: var(--radius) var(--radius) 0 0; max-height: 85vh; overflow-y: auto; }

  /* Touch targets */
  .btn-primary, .btn-secondary, .btn-manual-buy, .btn-manual-sell,
  .filter-btn, .page-btn { min-height: 40px; }
}

/* MODALS */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  z-index: 1000; display: flex; align-items: center; justify-content: center;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); width: 420px; max-width: 95vw;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 15px; font-weight: 600; color: var(--text); }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 20px; cursor: pointer; line-height: 1; }
.modal-body { padding: 16px 20px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; padding: 12px 20px; border-top: 1px solid var(--border); }
.modal-info { font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
.modal-preview { margin-top: 12px; padding: 10px; background: var(--bg); border-radius: var(--radius-sm); font-size: 12px; color: var(--text-secondary); line-height: 1.8; }
.position-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  margin-bottom: 8px; cursor: pointer;
}
.position-item:hover { background: var(--bg-card-hover); }
.position-item .pos-info { font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
.position-item .pos-pnl { font-size: 13px; font-weight: 600; }
.position-item .btn-sell-pos { background: var(--red); color: #fff; border: none; border-radius: var(--radius-sm); padding: 5px 12px; font-size: 12px; cursor: pointer; }