:root {
  /* Color Palette - Dark Mode focused for Crypto vibe */
  --bg-body: #0f111a;
  --bg-card: #181b25;
  --bg-card-hover: #1f2330;
  --bg-nav: #0f111a;
  
  --text-primary: #ffffff;
  --text-secondary: #949aa8;
  --text-tertiary: #6b7280;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  --border: #2d3342;
  --border-light: #374151;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  /* Components */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.5;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Typography */
h1, h2, h3, h4, h5 { margin: 0; font-weight: 600; }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.font-mono { font-family: 'Courier New', Courier, monospace; }

/* Navigation */
.navbar {
  height: 64px;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-nav);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.nav-links {
  display: flex;
  gap: var(--space-lg);
}
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-xs) 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s;
  border: 1px solid transparent;
  font-size: var(--text-sm);
}
.btn-primary {
  background-color: var(--primary);
  color: white;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}
.btn-outline {
  background-color: transparent;
  border-color: var(--border-light);
  color: var(--text-primary);
}
.btn-outline:hover {
  border-color: var(--text-secondary);
  background-color: var(--bg-card-hover);
}

/* Market Table */
.market-header {
  padding: var(--space-xl) 0;
}
.market-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.stat-card {
  background-color: var(--bg-card);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}
.stat-value {
  font-size: var(--text-lg);
  font-weight: 600;
}

/* Tabs */
.tabs {
  display: flex;
  gap: var(--space-md);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-lg);
}
.tab {
  padding: var(--space-sm) 0;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Crypto List Table */
.crypto-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
.crypto-table th {
  text-align: left;
  padding: var(--space-md);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.crypto-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.crypto-row:hover td {
  background-color: var(--bg-card-hover);
}
.coin-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.coin-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-card-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
}
.coin-name {
  font-weight: 600;
  display: block;
}
.coin-symbol {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
}
.chart-mini {
  width: 100px;
  height: 32px;
  background-color: var(--bg-card); /* Placeholder for sparkline */
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}
.chart-line-up {
  position: absolute;
  bottom: 5px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--success));
  transform: rotate(-5deg);
}
.chart-line-down {
  position: absolute;
  bottom: 15px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--danger));
  transform: rotate(5deg);
}

/* Search Bar */
.search-bar {
  display: flex;
  align-items: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  width: 300px;
}
.search-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: var(--space-sm) 0;
  width: 100%;
  outline: none;
  margin-left: var(--space-sm);
}
.search-icon {
  color: var(--text-secondary);
}

/* Hero Section */
.hero {
  padding: var(--space-xl) 0;
  text-align: center;
}
.hero h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}
.hero p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Badges */
.badge {
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}
.badge-new {
  background-color: rgba(59, 130, 246, 0.2);
  color: var(--primary);
}

/* --- TRADING PAGE STYLES --- */

.trade-container {
  display: grid;
  grid-template-columns: 280px 1fr 300px;
  gap: var(--space-xs);
  padding: var(--space-xs);
  height: calc(100vh - 64px);
  background-color: var(--bg-body);
  overflow: hidden;
}

.panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: var(--space-sm);
  border-bottom: 1px solid var(--border);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-nav);
  text-transform: uppercase;
}

/* Order Book Table */
.ob-section {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg-card);
}
.ob-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  font-family: var(--font-mono);
  table-layout: fixed;
}
.ob-table th {
  color: var(--text-tertiary);
  font-weight: normal;
  text-align: right;
  padding: 4px 8px;
  position: sticky;
  top: 0;
  background-color: var(--bg-card);
}
.ob-table th:first-child, .ob-table td:first-child { text-align: left; }
.ob-table td {
  padding: 2px 8px;
  cursor: pointer;
  position: relative;
  z-index: 1;
}
.ob-table tr:hover td { background-color: var(--bg-card-hover); }
.text-ask { color: var(--danger); }
.text-bid { color: var(--success); }

/* Depth bars visualization */
.depth-bg-ask {
  position: absolute;
  top: 0; bottom: 0; right: 0;
  background-color: rgba(239, 68, 68, 0.15);
  z-index: -1;
}
.depth-bg-bid {
  position: absolute;
  top: 0; bottom: 0; right: 0;
  background-color: rgba(16, 185, 129, 0.15);
  z-index: -1;
}

/* Current Price Display in Order Book */
.ob-current-price {
  padding: var(--space-sm);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--text-lg);
  font-weight: 600;
}

/* Chart Area */
.chart-view {
  flex: 1;
  background-color: #131722; /* TradingView generic bg color */
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ticker-bar {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  gap: var(--space-lg);
}
.ticker-info h2 { font-size: var(--text-lg); display: flex; align-items: center; gap: var(--space-sm); }
.stat-pair { display: flex; flex-direction: column; }
.stat-pair span:first-child { font-size: 10px; color: var(--text-secondary); }
.stat-pair span:last-child { font-size: 12px; font-weight: 600; font-family: var(--font-mono); }

/* Order Form */
.order-forms-container {
  padding: var(--space-md);
  display: flex;
  gap: var(--space-md);
}
.order-box {
  flex: 1;
}
.form-row {
  margin-bottom: var(--space-md);
}
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}
.input-label {
  position: absolute;
  left: 10px;
  color: var(--text-secondary);
  font-size: var(--text-xs);
}
.input-suffix {
  position: absolute;
  right: 10px;
  color: var(--text-secondary);
  font-size: var(--text-xs);
}
.trade-input {
  width: 100%;
  background-color: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 30px 8px 40px; /* space for label and suffix */
  color: var(--text-primary);
  text-align: right;
  font-family: var(--font-mono);
}
.trade-input:focus { outline: none; border-color: var(--primary); }

.slider-container {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}
.slider-dot {
  width: 8px; height: 8px; background: var(--border-light); border-radius: 50%; cursor: pointer;
}
.slider-dot.active { background: var(--primary); }

.btn-buy { background-color: var(--success); color: white; border: none; width: 100%; }
.btn-buy:hover { background-color: #059669; }
.btn-sell { background-color: var(--danger); color: white; border: none; width: 100%; }
.btn-sell:hover { background-color: #dc2626; }

/* History Tabs */
.history-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}
.history-tab {
  padding: 8px 16px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-secondary);
}
.history-tab.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}