/* ============================================================================
   MODERN TRADING PLATFORM DESIGN SYSTEM
   PreoCrypto - Professional Color Scheme & Components
   ============================================================================ */

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

html {
  scroll-behavior: smooth;
}

:root {
  --primary: #0055ff;
  --primary-dark: #003d99;
  --primary-light: #3d7eff;
  
  --secondary: #00d4ff;
  --secondary-dark: #00a8cc;
  --secondary-light: #4de9ff;
  
  --accent: #ff6b35;
  --accent-light: #ff8a5b;
  
  --success: #00d084;
  --success-light: #33e0a1;
  --danger: #ff4757;
  --danger-light: #ff6b7a;
  --warning: #ffa502;
  --warning-light: #ffb929;
  
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f2e;
  --bg-tertiary: #252d3d;
  --bg-light: #f8f9fa;
  
  --text-primary: #ffffff;
  --text-secondary: #b0b8c1;
  --text-tertiary: #7a8290;
  --text-dark: #1a1f2e;
  
  --border-color: #2d3748;
  --border-light: #3a424f;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.25);
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'Monaco', 'Courier New', monospace;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.3s ease;
}

body.light-mode {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f2f7;
  --bg-light: #1a1f2e;
  
  --text-primary: #1a1f2e;
  --text-secondary: #5a6370;
  --text-tertiary: #8a9299;
  --text-dark: #ffffff;
  
  --border-color: #e0e6ed;
  --border-light: #d5dbe5;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: var(--radius-md);
  transition: background 0.3s;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 32px; }
h2 { font-size: 24px; }
h3 { font-size: 20px; }
h4 { font-size: 16px; }
h5 { font-size: 14px; }
h6 { font-size: 12px; }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--secondary-light);
}

code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--accent);
}

/* ============================================================================
   HEADER / TOP NAVIGATION
   ============================================================================ */

.top-nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 0 1 auto;
}

.menu-toggle {
  background: none;
  border: none;
  color: var(--secondary);
  cursor: pointer;
  font-size: 20px;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  display: none;
}

.menu-toggle:hover {
  background: rgba(0, 212, 255, 0.1);
}

.logo {
  height: 32px;
  width: auto;
  display: block;
}

.nav-left h1 {
  font-size: 20px;
  margin: 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-center {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.market-ticker {
  display: flex;
  gap: var(--spacing-xl);
  overflow-x: auto;
  padding: var(--spacing-sm) 0;
  scroll-behavior: smooth;
}

.market-ticker::-webkit-scrollbar {
  height: 4px;
}

.ticker-item {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  white-space: nowrap;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 212, 255, 0.05);
  border-radius: var(--radius-md);
  border-left: 2px solid var(--secondary);
  transition: all 0.3s;
}

.ticker-item:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

.ticker-pair {
  font-weight: 600;
  color: var(--text-primary);
}

.ticker-price {
  color: var(--secondary);
  font-weight: 600;
  font-family: var(--font-mono);
}

.ticker-change {
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
}

.ticker-change.green {
  color: var(--success);
}

.ticker-change.red {
  color: var(--danger);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 0 1 auto;
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--secondary);
}

.nav-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--secondary);
}

.nav-btn.logout {
  background: rgba(255, 71, 87, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.nav-btn.logout:hover {
  background: var(--danger);
  color: var(--text-primary);
}

/* ============================================================================
   SIDEBAR / SIDE MENU
   ============================================================================ */

.side-menu {
  position: fixed;
  left: 0;
  top: 0;
  width: 260px;
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  overflow-y: auto;
  z-index: 99;
  transition: transform 0.3s ease;
}

.side-menu::before {
  content: '';
  display: block;
  height: 60px;
}

.menu-close {
  display: none;
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  width: 40px;
  height: 40px;
}

.menu-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: 0 var(--spacing-md);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  border-left: 3px solid transparent;
  font-weight: 500;
}

.menu-item:hover {
  background: rgba(0, 212, 255, 0.1);
  color: var(--secondary);
  border-left-color: var(--secondary);
}

.menu-item.active {
  background: rgba(0, 212, 255, 0.15);
  color: var(--secondary);
  border-left-color: var(--secondary);
  font-weight: 600;
}

/* ============================================================================
   MAIN CONTAINER & LAYOUT
   ============================================================================ */

.main-container {
  margin-left: 260px;
  margin-top: 60px;
  padding: var(--spacing-xl);
  min-height: calc(100vh - 60px);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

/* ============================================================================
   CARDS & CONTAINERS
   ============================================================================ */

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-light);
}

.content-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
  grid-column: 1 / -1;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
}

.section-header h2 {
  margin: 0;
}

/* ============================================================================
   ACCOUNT SUMMARY SECTION
   ============================================================================ */

.account-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  grid-column: 1 / -1;
}

.summary-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.3s;
  cursor: pointer;
}

.summary-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--secondary);
}

.summary-card:nth-child(2) {
  border-left-color: var(--secondary);
}

.summary-card:nth-child(3) {
  border-left-color: var(--success);
}

.summary-card:nth-child(4) {
  border-left-color: var(--accent);
}

.summary-label {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.summary-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-mono);
}

.summary-value.green {
  color: var(--success);
}

.summary-value.red {
  color: var(--danger);
}

.summary-change {
  font-size: 12px;
  color: var(--text-tertiary);
}

.account-toggle {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.toggle-btn {
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
}

.toggle-btn:hover {
  border-color: var(--secondary);
  color: var(--secondary);
}

.toggle-btn.demo-active,
.toggle-btn.real-active {
  background: rgba(0, 212, 255, 0.15);
  border-color: var(--secondary);
  color: var(--secondary);
}

/* ============================================================================
   CHARTS SECTION
   ============================================================================ */

.charts-section {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
  grid-column: 1 / -1;
}

.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  height: 600px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.chart-container.large {
  grid-column: 1 / -1;
  height: 600px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-md);
}

.chart-header h3 {
  margin: 0;
  flex: 1;
}

.timeframe-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.tf-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s;
}

.tf-btn:hover {
  border-color: var(--secondary);
  color: var(--secondary);
}

.tf-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-primary);
}

/* ============================================================================
   TRADING SECTION
   ============================================================================ */

.trading-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  grid-column: 1 / -1;
  box-shadow: var(--shadow-sm);
}

.search-box {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.2s;
}

.search-box:focus {
  outline: none;
  border-color: var(--secondary);
  background: rgba(0, 212, 255, 0.05);
}

.search-box::placeholder {
  color: var(--text-tertiary);
}

.pairs-table {
  overflow-x: auto;
  margin-top: var(--spacing-md);
}

.table-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.5fr 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 2px solid var(--border-color);
  font-weight: 600;
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.table-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.5fr 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  transition: all 0.2s;
  border-radius: var(--radius-md);
}

.table-row:hover {
  background: rgba(0, 212, 255, 0.05);
  border-left: 3px solid var(--secondary);
  padding-left: calc(var(--spacing-md) - 3px);
}

.col-pair {
  font-weight: 600;
  color: var(--text-primary);
}

.col-price {
  color: var(--secondary);
  font-family: var(--font-mono);
  font-weight: 600;
}

.col-change {
  text-align: right;
}

.col-change.positive {
  color: var(--success);
}

.col-change.negative {
  color: var(--danger);
}

.col-bid-ask {
  font-size: 12px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.col-action {
  text-align: right;
}

.empty-state {
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-tertiary);
  font-style: italic;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

button {
  font-family: var(--font-family);
  cursor: pointer;
  transition: all 0.2s;
}

.btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-primary);
  border: none;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--text-dark);
  border: none;
}

.btn-secondary:hover {
  background: var(--secondary-dark);
}

.btn-success {
  background: var(--success);
  color: var(--text-dark);
  border: none;
}

.btn-success:hover {
  background: #00b56a;
}

.btn-danger {
  background: var(--danger);
  color: var(--text-primary);
  border: none;
}

.btn-danger:hover {
  background: #e63443;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--secondary);
}

.btn-small {
  padding: 4px 12px;
  font-size: 12px;
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 16px;
}

/* Chart Type Buttons */
.chart-type-btn {
  padding: 6px 12px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.chart-type-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--secondary);
}

.chart-type-btn.active {
  background: var(--secondary);
  color: var(--text-dark);
  border-color: var(--secondary);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
  animation: buttonPressDown 0.3s ease;
}

@keyframes buttonPressDown {
  0% { transform: scale(1); }
  50% { transform: scale(0.98); }
  100% { transform: scale(1); }
}

/* Drawing Tool Buttons */
.drawing-tool-btn {
  padding: 6px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.drawing-tool-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--secondary);
}

.drawing-tool-btn.active {
  background: var(--primary);
  color: var(--text-primary);
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(0, 85, 255, 0.4);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-family);
  transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--secondary);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder {
  color: var(--text-tertiary);
}

.form-error {
  color: var(--danger);
  font-size: 12px;
  margin-top: var(--spacing-sm);
}

.form-helper {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-top: var(--spacing-sm);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* ============================================================================
   MODALS & DIALOGS
   ============================================================================ */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal.active {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-lg);
}

.modal-header h2 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.modal-close:hover {
  background: var(--bg-tertiary);
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 1024px) {
  .charts-section {
    grid-template-columns: 1fr;
  }
  
  .table-header,
  .table-row {
    grid-template-columns: 1fr 1fr 1fr;
  }
  
  .col-bid-ask {
    display: none;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .side-menu {
    transform: translateX(-100%);
  }
  
  .side-menu.active {
    transform: translateX(0);
  }
  
  .menu-close {
    display: block;
  }
  
  .main-container {
    margin-left: 0;
    margin-top: 60px;
    padding: var(--spacing-md);
  }
  
  .nav-center {
    display: none;
  }
  
  .nav-left h1 {
    display: none;
  }
  
  .account-summary {
    grid-template-columns: 1fr;
  }
  
  .charts-section {
    grid-template-columns: 1fr;
  }
  
  .chart-container.large {
    height: 350px;
  }
  
  .table-header,
  .table-row {
    grid-template-columns: 1fr 1fr;
  }
  
  .col-change,
  .col-bid-ask {
    display: none;
  }
  
  .modal-content {
    width: 95%;
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 16px;
    --spacing-xl: 20px;
  }
  
  .top-nav {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .nav-right {
    gap: var(--spacing-sm);
  }
  
  .nav-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 12px;
  }
  
  .main-container {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .account-summary {
    gap: var(--spacing-sm);
  }
  
  .summary-card {
    padding: var(--spacing-md);
  }
  
  .summary-value {
    font-size: 24px;
  }
  
  .table-header,
  .table-row {
    grid-template-columns: 1fr;
  }
  
  .col-action {
    text-align: left;
  }
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes slideInLeft {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInRight {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-slide-left { animation: slideInLeft 0.3s ease; }
.animate-slide-right { animation: slideInRight 0.3s ease; }

/* ============================================================================
   TRUST & SECURITY INDICATORS
   ============================================================================ */

.logo {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.3));
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(0, 208, 132, 0.1);
  border: 1px solid rgba(0, 208, 132, 0.3);
  border-radius: 20px;
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
}

.trust-badge.verified {
  background: rgba(0, 208, 132, 0.15);
  border-color: rgba(0, 208, 132, 0.5);
}

.trust-badge.secure {
  background: rgba(0, 85, 255, 0.1);
  border: 1px solid rgba(0, 85, 255, 0.3);
  color: var(--primary);
}

.trust-badge.regulated {
  background: rgba(255, 165, 2, 0.1);
  border: 1px solid rgba(255, 165, 2, 0.3);
  color: var(--warning);
}

.security-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(0, 85, 255, 0.05), rgba(0, 212, 255, 0.05));
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  margin-bottom: var(--spacing-md);
}

.security-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.badge-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.certification-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.certification-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
}

.certification-text h4 {
  margin: 0 0 4px 0;
  color: var(--text-primary);
  font-size: 14px;
}

.certification-text p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 12px;
}

.trust-score {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: linear-gradient(135deg, rgba(0, 208, 132, 0.2), rgba(0, 212, 255, 0.2));
  border: 1px solid rgba(0, 208, 132, 0.4);
  border-radius: 20px;
  font-weight: 600;
  color: var(--success);
}

.trust-score-number {
  font-size: 18px;
  font-weight: 700;
}

.trust-score-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.security-info {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--primary);
  padding: var(--spacing-md);
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  margin: var(--spacing-md) 0;
}

.security-info strong {
  color: var(--text-primary);
}

.feature-trust {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.feature-trust-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  font-weight: bold;
}

.feature-trust-text h5 {
  margin: 0 0 4px 0;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
}

.feature-trust-text p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 12px;
}

.company-info {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  margin: var(--spacing-lg) 0;
}

.company-info-item {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
}

.company-info-item:last-child {
  border-bottom: none;
}

.company-info-label {
  display: block;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.company-info-value {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
}

/* ============================================================================
   BUY/SELL CHART ACTION BUTTONS
   ============================================================================ */

.chart-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 70px;
  padding: 12px 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.buy-btn {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  border-color: #047857;
}

.buy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.buy-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.sell-btn {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border-color: #b91c1c;
}

.sell-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.sell-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

/* ============================================================================
   MOBILE RESPONSIVE & TAB NAVIGATION
   ============================================================================ */

.mobile-tab-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: var(--spacing-md);
}

.mobile-tab-btn {
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  font-size: 14px;
}

.mobile-tab-btn.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.mobile-tab-btn:hover {
  background: var(--bg-secondary);
}

.chart-tab-content {
  display: none;
}

.chart-tab-content.active {
  display: block;
}

/* Mobile layout - hide trading section on small screens */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 1fr;
  }

  #mobileTabNav {
    display: grid !important;
  }

  .account-summary {
    grid-template-columns: 1fr 1fr;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-box {
    width: 100% !important;
    margin-top: 12px;
  }

  .pairs-table {
    font-size: 12px;
  }

  .col-pair, .col-price, .col-change, .col-bid-ask {
    flex: 1;
  }

  .col-action {
    display: none;
  }

  .btn-small {
    padding: 4px 8px !important;
    font-size: 11px !important;
  }
}

/* Extra small phones */
@media (max-width: 640px) {
  .top-nav {
    padding: 12px 16px;
  }

  .main-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }

  .chart-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .chart-type-selector {
    border-right: none !important;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px !important;
    width: 100%;
  }

  .timeframe-buttons {
    width: 100%;
    flex-wrap: wrap;
  }

  .tf-btn {
    flex: 1;
    min-width: 45px;
    padding: 8px 4px !important;
    font-size: 11px !important;
  }

  .account-summary {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }

  .summary-card {
    padding: var(--spacing-md);
  }

  .chart-container {
    padding: var(--spacing-md);
  }

  #mainChart {
    height: 400px !important;
  }

  .section-header h2 {
    font-size: 18px;
    margin-bottom: 12px;
  }

  .pairs-table {
    overflow-x: auto;
  }

  .table-header {
    min-width: 400px;
  }

  .pairs-row {
    min-width: 400px;
  }
}