:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1923;
  --bg-panel: #111a27;
  --border: #1a2a3a;
  --text-primary: #e0e6ed;
  --text-secondary: #7a8a9a;
  --accent-green: #00ff88;
  --accent-cyan: #00d4ff;
  --accent-red: #ff3366;
  --accent-orange: #ff8800;
  --accent-purple: #aa66ff;
  --glow-green: 0 0 20px rgba(0, 255, 136, 0.3);
  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
  --glow-red: 0 0 20px rgba(255, 51, 102, 0.3);
}

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

body {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.tabs {
  display: flex;
  gap: 4px;
}

.tab {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 16px;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.tab.active {
  color: var(--bg-primary);
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: grid;
}

main.tab-content:not(.active) {
  display: none !important;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--accent-orange);
}

.logo span {
  color: var(--text-primary);
  font-size: 16px;
  letter-spacing: 4px;
  margin-left: 8px;
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-red);
  animation: pulse 2s infinite;
}

.dot.connected {
  background: var(--accent-green);
  box-shadow: var(--glow-green);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

main.grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto auto;
  gap: 12px;
  padding: 12px;
  flex: 1;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.panel:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.panel h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Price Panel */
.price-panel {
  grid-column: 1;
  grid-row: 1;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.price {
  font-size: 36px;
  font-weight: bold;
  color: var(--text-primary);
  transition: color 0.3s;
}

.price.flash-green {
  color: var(--accent-green);
  text-shadow: var(--glow-green);
}

.price.flash-red {
  color: var(--accent-red);
  text-shadow: var(--glow-red);
}

.price-change {
  font-size: 14px;
  font-weight: bold;
}

.price-change.up {
  color: var(--accent-green);
}

.price-change.down {
  color: var(--accent-red);
}

.price-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-item label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.meta-item span {
  font-size: 14px;
  color: var(--text-primary);
}

.sparkline-container {
  width: 100%;
  height: 60px;
  border-radius: 4px;
  overflow: hidden;
}

#sparkline {
  width: 100%;
  height: 100%;
}

/* Order Book */
.orderbook-panel {
  grid-column: 2;
  grid-row: 1 / 3;
}

.orderbook-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 0 8px;
  border-bottom: 1px solid var(--border);
}

.orderbook-content {
  max-height: 500px;
  overflow-y: auto;
}

.asks, .bids {
  display: flex;
  flex-direction: column;
}

.asks {
  flex-direction: column-reverse;
}

.order-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 2px 0;
  font-size: 12px;
  position: relative;
  transition: background 0.2s;
}

.order-row:hover {
  background: rgba(255, 255, 255, 0.05);
}

.order-row .depth-bar {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  opacity: 0.15;
}

.order-row.bid .depth-bar {
  background: var(--accent-green);
}

.order-row.ask .depth-bar {
  background: var(--accent-red);
}

.order-row.bid .order-price {
  color: var(--accent-green);
}

.order-row.ask .order-price {
  color: var(--accent-red);
}

.spread {
  text-align: center;
  padding: 6px;
  font-size: 11px;
  color: var(--accent-cyan);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 4px 0;
}

/* Mempool Panel */
.mempool-panel {
  grid-column: 1;
  grid-row: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat span {
  font-size: 18px;
  font-weight: bold;
  color: var(--accent-cyan);
}

/* Fee Panel */
.fees-panel {
  grid-column: 3;
  grid-row: 1;
}

.fee-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fee-item {
  display: grid;
  grid-template-columns: 70px 1fr 80px;
  align-items: center;
  gap: 8px;
}

.fee-label {
  font-size: 11px;
  color: var(--text-secondary);
}

.fee-bar-container {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  overflow: hidden;
}

.fee-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
  width: 0%;
}

.fee-bar.fastest {
  background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
}

.fee-bar.halfhour {
  background: linear-gradient(90deg, var(--accent-orange), #ffcc00);
}

.fee-bar.hour {
  background: linear-gradient(90deg, #ffcc00, var(--accent-green));
}

.fee-bar.economy {
  background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan));
}

.fee-value {
  font-size: 12px;
  color: var(--text-primary);
  text-align: right;
}

/* Blocks Panel */
.blocks-panel {
  grid-column: 3;
  grid-row: 2;
}

.blocks-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.block-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 6px;
  border-left: 3px solid var(--accent-purple);
  transition: background 0.2s;
}

.block-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.block-height {
  font-size: 14px;
  font-weight: bold;
  color: var(--accent-purple);
  min-width: 70px;
}

.block-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.block-details .txs {
  font-size: 12px;
  color: var(--text-primary);
}

.block-details .block-time {
  font-size: 10px;
  color: var(--text-secondary);
}

.block-details .block-hash {
  font-size: 9px;
  color: var(--text-secondary);
  font-family: monospace;
}

.block-placeholder, .whale-placeholder {
  color: var(--text-secondary);
  font-size: 12px;
  text-align: center;
  padding: 20px;
  animation: pulse 2s infinite;
}

/* Network Panel */
.network-panel {
  grid-column: 1;
  grid-row: 3;
}

/* Whale Panel */
.whale-panel {
  grid-column: 2 / 4;
  grid-row: 3;
}

.whale-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 250px;
  overflow-y: auto;
}

.whale-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 12px;
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 4px;
  align-items: center;
  transition: background 0.2s;
  animation: slideIn 0.3s ease;
}

.whale-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.whale-amount {
  font-weight: bold;
  color: var(--accent-orange);
  font-size: 13px;
}

.whale-hash {
  font-size: 10px;
  color: var(--text-secondary);
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.whale-time {
  font-size: 10px;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* === MONERO TAB === */
.xmr-grid {
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto auto;
}

.xmr-market-panel { grid-column: 1; grid-row: 1; }
.xmr-network-panel { grid-column: 2; grid-row: 1; }
.xmr-book-panel { grid-column: 3; grid-row: 1 / 3; }
.xmr-trades-panel { grid-column: 1 / 3; grid-row: 2; }
.xmr-news-panel { grid-column: 1 / 4; grid-row: 3; }

.xmr-book-container {
  display: flex;
  gap: 12px;
}

.xmr-book-side {
  flex: 1;
}

.xmr-book-header {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding-bottom: 6px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

#xmr-bids-list, #xmr-asks-list {
  max-height: 280px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.xmr-book-row {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
  font-size: 12px;
}

.xmr-book-row.bid { color: var(--accent-green); }
.xmr-book-row.ask { color: var(--accent-red); }

.xmr-trades-list {
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.xmr-trade-row {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: 12px;
  padding: 4px 0;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}

.xmr-trade-row.buy .xmr-trade-price { color: var(--accent-green); }
.xmr-trade-row.sell .xmr-trade-price { color: var(--accent-red); }
.xmr-trade-time { color: var(--text-secondary); font-size: 11px; }

.xmr-news-list {
  max-height: 240px;
  overflow-y: auto;
}

.xmr-news-row {
  display: grid;
  grid-template-columns: 100px 1fr 60px;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  align-items: start;
}

.xmr-news-source {
  color: var(--accent-orange);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.xmr-news-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.xmr-news-title a:hover {
  color: var(--accent-cyan);
}

.xmr-news-time {
  color: var(--text-secondary);
  font-size: 11px;
  text-align: right;
}

.btc-news-panel {
  grid-column: 1 / 4;
  grid-row: 5;
}

.onchain-panel {
  grid-column: 1 / 4;
  grid-row: 4;
}

.onchain-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.onchain-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.onchain-item:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.onchain-item label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.onchain-item span {
  font-size: 22px;
  font-weight: bold;
  color: var(--accent-cyan);
}

.onchain-item small {
  font-size: 9px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Allow XMR network panel to host more stats */
.xmr-network-panel .stats-grid {
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.xmr-network-panel .stat span {
  font-size: 14px;
}