/* ============================================================
   NOVA PROFESSIONAL TRADING APP - COMPLETE STYLES
   Version: 8.2
   ============================================================ */

/* ============================================================
   CSS VARIABLES
   ============================================================ */

:root {
  /* Colors */
  --bg-primary: #070b14;
  --bg-secondary: #0c1428;
  --bg-card: #111d35;
  --bg-input: #0a1525;
  --bg-hover: #1acontainer  --border-color: #1a2d4a;
  --border-light: #2a4060;
  
  --text-primary: #e8edf5;
  --text-secondary: #8899b5;
  --text-muted: #4a5a7a;
  
  /* Brand Colors */
  --nova-purple: #6366f1;
  --nova-purple-dark: #4f46e5;
  --nova-purple-light: #818cf8;
  --nova-purple-glow: rgba(99, 102, 241, 0.15);
  
  --green: #10b981;
  --green-dark: #059669;
  --green-glow: rgba(16, 185, 129, 0.15);
  
  --red: #ef4444;
  --red-dark: #dc2626;
  --red-glow: rgba(239, 68, 68, 0.15);
  
  --gold: #f59e0b;
  --gold-glow: rgba(245, 158, 11, 0.15);
  
  --blue: #60a5fa;
  --blue-glow: rgba(96, 165, 250, 0.15);
  
  --gradient-brand: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-brand-hover: linear-gradient(135deg, #818cf8, #a78bfa);
  
  /* Spacing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 4px 24px rgba(99, 102, 241, 0.25);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Safe area */
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ============================================================
   RESET & BASE
   ============================================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   APP CONTAINER
   ============================================================ */

.app-container {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 80px;
  position: relative;
  background: var(--bg-primary);
}

/* ============================================================
   HEADER
   ============================================================ */

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
}

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

.logo-img {
  height: 36px;
  width: auto;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.profile-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
  flex-shrink: 0;
}

.profile-circle:hover {
  transform: scale(1.05);
  border-color: var(--nova-purple-light);
}

.profile-circle:active {
  transform: scale(0.92);
}

.profile-circle .online-dot {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 10px;
  height: 10px;
  background: var(--green);
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.header-icon:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.header-icon:active {
  transform: scale(0.92);
}

/* ============================================================
   BOTTOM NAVIGATION
   ============================================================ */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  padding: 8px 0 calc(8px + var(--safe-bottom));
  max-width: 480px;
  margin: 0 auto;
  z-index: 100;
  backdrop-filter: blur(20px);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  min-width: 60px;
}

.nav-item .icon {
  font-size: 24px;
  transition: var(--transition);
}

.nav-item .label {
  font-size: 10px;
  font-weight: 500;
}

.nav-item:hover {
  color: var(--text-primary);
}

.nav-item.active {
  color: var(--nova-purple-light);
}

.nav-item.active .icon {
  transform: translateY(-2px);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
}

.nav-item:active {
  transform: scale(0.92);
}

/* ============================================================
   HOME PAGE
   ============================================================ */

.home-content {
  padding: 16px 20px;
}

/* Balance Card */
.balance-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.balance-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 60%;
  height: 100%;
  background: radial-gradient(circle, var(--nova-purple-glow), transparent 70%);
  pointer-events: none;
}

.balance-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.balance-label span {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.balance-eye {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}

.balance-eye:hover {
  color: var(--text-primary);
}

.balance-amount {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  transition: var(--transition);
}

.balance-amount.hidden {
  filter: blur(8px);
  user-select: none;
}

.balance-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

.balance-change.positive {
  color: var(--green);
  background: var(--green-glow);
}

.balance-change.negative {
  color: var(--red);
  background: var(--red-glow);
}

/* Pool Stats */
.pool-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.pool-stat {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.pool-stat .label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pool-stat .value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
}

/* Price Row */
.price-row {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.price-row:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.price-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.price-icon img {
  width: 28px;
  height: 28px;
}

.price-info {
  flex: 1;
}

.price-pair {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.price-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.price-change-small {
  font-size: 14px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.price-change-small.positive {
  color: var(--green);
  background: var(--green-glow);
}

.price-change-small.negative {
  color: var(--red);
  background: var(--red-glow);
}

/* Quick Actions */
.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.quick-action-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 8px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.quick-action-btn:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.quick-action-btn:active {
  transform: scale(0.95);
}

.quick-action-btn .icon {
  font-size: 24px;
  display: block;
  margin-bottom: 4px;
}

.quick-action-btn .label {
  font-size: 12px;
  font-weight: 500;
}

/* ============================================================
   TRADE PAGE
   ============================================================ */

.trade-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.trade-price-display {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.trade-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.trade-change {
  font-size: 14px;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: var(--radius-full);
}

.trade-change.positive {
  color: var(--green);
  background: var(--green-glow);
}

.trade-change.negative {
  color: var(--red);
  background: var(--red-glow);
}

.trade-actions-header {
  display: flex;
  gap: 8px;
}

.trade-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.trade-icon-btn:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.trade-icon-btn:active {
  transform: scale(0.92);
}

/* Trade Stats Bar */
.trade-stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  gap: 8px;
}

.trade-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.trade-stat-label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.trade-stat-divider {
  width: 1px;
  height: 30px;
  background: var(--border-color);
}

/* Chart Controls */
.chart-controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.chart-period-buttons {
  display: flex;
  gap: 4px;
}

.chart-btn {
  padding: 4px 10px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.chart-btn:hover {
  color: var(--text-primary);
  background: var(--bg-input);
}

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

.chart-price-label {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
}

.chart-price-label span {
  color: var(--text-primary);
  font-weight: 700;
}

/* Chart Wrapper */
.chart-wrapper-small {
  height: 300px;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

#tradeChart {
  width: 100% !important;
  height: 100% !important;
  display: block !important;
}

/* Trade Form */
.trade-form-container {
  padding: 16px 20px;
}

.trade-type-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 16px;
}

.trade-type-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.trade-type-tab:hover {
  color: var(--text-primary);
}

.trade-type-tab.active.buy {
  background: var(--green-glow);
  color: var(--green);
}

.trade-type-tab.active.sell {
  background: var(--red-glow);
  color: var(--red);
}

.trade-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.trade-input-group .form-control {
  flex: 1;
}

.trade-switch-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.trade-switch-btn:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.trade-switch-btn:active {
  transform: scale(0.92);
}

.trade-mode-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.percent-buttons {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}

.percent-btn {
  flex: 1;
  padding: 6px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.percent-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.percent-btn.active {
  background: var(--bg-hover);
  border-color: var(--nova-purple);
  color: var(--text-primary);
}

.percent-btn:active {
  transform: scale(0.95);
}

.trade-preview {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
}

.trade-preview-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.trade-preview-row .value {
  color: var(--text-primary);
  font-weight: 500;
}

.trade-preview-row.total {
  border-top: 1px solid var(--border-color);
  margin-top: 4px;
  padding-top: 8px;
}

.trade-preview-row.total .value {
  color: var(--gold);
  font-size: 16px;
  font-weight: 700;
}

.trade-submit-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  color: #fff;
}

.trade-submit-btn.buy {
  background: var(--gradient-brand);
  box-shadow: var(--shadow-glow);
}

.trade-submit-btn.buy:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(99, 102, 241, 0.35);
}

.trade-submit-btn.sell {
  background: var(--red);
  box-shadow: 0 4px 20px var(--red-glow);
}

.trade-submit-btn.sell:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(239, 68, 68, 0.35);
}

.trade-submit-btn:active {
  transform: scale(0.98);
}

.trade-submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================================================
   ASSETS PAGE
   ============================================================ */

.assets-content {
  padding: 16px 20px;
}

.assets-header {
  margin-bottom: 20px;
}

.assets-header .balance-label {
  color: var(--text-secondary);
  font-size: 14px;
}

.assets-header .balance-amount {
  font-size: 32px;
}

.assets-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.assets-action-btn {
  padding: 14px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.assets-action-btn:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.assets-action-btn:active {
  transform: scale(0.95);
}

.assets-action-btn .icon {
  font-size: 20px;
  display: block;
  margin-bottom: 4px;
}

.assets-action-btn .label {
  font-size: 12px;
  font-weight: 500;
}

.asset-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.asset-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.asset-item:hover {
  border-color: var(--border-light);
}

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

.asset-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

.asset-icon.usdt {
  background: var(--green-glow);
  color: var(--green);
}

.asset-icon.nova {
  background: var(--nova-purple-glow);
  color: var(--nova-purple-light);
}

.asset-name {
  font-size: 14px;
  font-weight: 600;
}

.asset-symbol {
  font-size: 12px;
  color: var(--text-secondary);
}

.asset-right {
  text-align: right;
}

.asset-balance {
  font-size: 16px;
  font-weight: 600;
}

.asset-value {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ============================================================
   PROFILE PAGE
   ============================================================ */

.profile-content {
  padding: 20px;
}

.profile-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  margin-bottom: 20px;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 12px;
}

.profile-email {
  font-size: 16px;
  font-weight: 600;
}

.profile-role {
  font-size: 13px;
  color: var(--text-secondary);
}

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

.profile-menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.profile-menu-item:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.profile-menu-item:active {
  transform: scale(0.98);
}

.profile-menu-item .icon {
  font-size: 18px;
}

.profile-menu-item .arrow {
  margin-left: auto;
  color: var(--text-secondary);
}

/* ============================================================
   REFERRAL PAGE
   ============================================================ */

.referral-container {
  padding: 16px 20px;
}

.referral-banner {
  background: linear-gradient(135deg, #1a2a45, #2a1a45);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.referral-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 60%;
  height: 100%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent 70%);
  pointer-events: none;
}

.referral-banner .icon {
  font-size: 40px;
  margin-bottom: 8px;
}

.referral-banner h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.referral-banner h2 span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.referral-banner .subtext {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 4px;
}

.referral-banner .highlight {
  color: var(--gold);
  font-weight: 700;
  font-size: 18px;
}

.referral-banner .btn {
  padding: 12px 32px;
  font-size: 16px;
  margin-top: 12px;
}

.referral-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.ref-stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
}

.ref-stat-card .number {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.ref-stat-card .label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.ref-stat-card.green .number { color: var(--green); }
.ref-stat-card.gold .number { color: var(--gold); }
.ref-stat-card.blue .number { color: var(--blue); }
.ref-stat-card.purple .number { color: var(--nova-purple-light); }

.how-it-works {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.how-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
}

.how-step .step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin: 0 auto 8px;
}

.how-step .step-icon {
  font-size: 28px;
  margin-bottom: 4px;
}

.how-step h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.how-step p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.link-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.link-box .label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.link-box .link-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.link-box .link-row .form-control {
  flex: 1;
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
}

.link-box .link-row .btn {
  padding: 10px 20px;
  white-space: nowrap;
}

/* ============================================================
   AUTH PAGES
   ============================================================ */

.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg-primary);
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px 28px;
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.auth-card .logo-container {
  text-align: center;
  margin-bottom: 8px;
}

.auth-card .logo-container img {
  height: 48px;
  width: auto;
}

.auth-card .brand-name {
  text-align: center;
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.auth-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
}

.auth-card .form-group {
  margin-bottom: 16px;
}

.auth-card .form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
}

.auth-card .form-control {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  width: 100%;
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

.auth-card .form-control:focus {
  outline: none;
  border-color: var(--nova-purple);
  box-shadow: 0 0 0 3px var(--nova-purple-glow);
}

.auth-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--gradient-brand);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 8px;
}

.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.auth-btn:active {
  transform: scale(0.98);
}

.auth-link {
  text-align: center;
  margin-top: 20px;
  color: var(--text-secondary);
  font-size: 14px;
}

.auth-link a {
  color: var(--nova-purple-light);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.auth-link a:hover {
  color: var(--nova-purple);
  text-decoration: underline;
}

/* ============================================================
   FORM CONTROLS
   ============================================================ */

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--nova-purple);
  box-shadow: 0 0 0 3px var(--nova-purple-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

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

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  min-height: 48px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(99, 102, 241, 0.4);
}

.btn-danger {
  background: var(--red);
  color: #fff;
  box-shadow: 0 4px 20px var(--red-glow);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(239, 68, 68, 0.4);
}

.btn-warning {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 4px 20px var(--gold-glow);
}

.btn-warning:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(245, 158, 11, 0.4);
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
  min-height: 32px;
}

/* ============================================================
   ALERTS
   ============================================================ */

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 12px;
}

.alert-success {
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-danger {
  background: var(--red-glow);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-info {
  background: var(--nova-purple-glow);
  color: var(--nova-purple-light);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.alert-warning {
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

/* ============================================================
   MODAL
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
}

.modal-sheet {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  max-width: 480px;
  width: 100%;
  max-height: 80vh;
  padding: 24px 20px calc(20px + var(--safe-bottom));
  overflow-y: auto;
  animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-sheet .modal-handle {
  width: 40px;
  height: 4px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
}

.modal-sheet .modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ============================================================
   SPINNER
   ============================================================ */

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--nova-purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 16px auto;
}

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

/* ============================================================
   TRANSACTIONS
   ============================================================ */

.tx-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--bg-input);
  align-items: center;
  font-size: 13px;
}

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

.tx-type {
  font-weight: 600;
}

.tx-type.buy {
  color: var(--green);
}

.tx-type.sell {
  color: var(--red);
}

/* ============================================================
   BADGES
   ============================================================ */

.badge {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  display: inline-block;
}

.badge-success {
  background: var(--green-glow);
  color: var(--green);
}

.badge-warning {
  background: var(--gold-glow);
  color: var(--gold);
}

.badge-danger {
  background: var(--red-glow);
  color: var(--red);
}

.badge-info {
  background: var(--nova-purple-glow);
  color: var(--nova-purple-light);
}

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

.hidden {
  display: none !important;
}

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

.text-muted {
  color: var(--text-secondary);
}

.mt-8 {
  margin-top: 8px;
}

.mt-16 {
  margin-top: 16px;
}

.mb-16 {
  margin-bottom: 16px;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */

::-webkit-scrollbar {
  width: 4px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

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

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

@media (min-width: 481px) {
  .app-container {
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
  }
  
  .bottom-nav {
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
  }
}

@media (max-width: 480px) {
  .balance-amount {
    font-size: 28px;
  }
  
  .quick-actions-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  
  .quick-action-btn {
    padding: 12px 4px;
  }
  
  .quick-action-btn .icon {
    font-size: 20px;
  }
  
  .trade-price {
    font-size: 20px;
  }
  
  .chart-wrapper-small {
    height: 200px;
  }
  
  .trade-stats-bar {
    padding: 8px 12px;
  }
  
  .trade-stat-value {
    font-size: 12px;
  }
  
  .trade-stat-label {
    font-size: 9px;
  }
  
  .chart-btn {
    font-size: 10px;
    padding: 3px 7px;
  }
  
  .chart-price-label {
    font-size: 10px;
  }
  
  .chart-controls-bar {
    padding: 6px 12px;
    flex-wrap: wrap;
    gap: 6px;
  }
  
  .assets-actions {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  
  .auth-card {
    padding: 28px 20px;
  }
  
  .pool-stats {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  
  .pool-stat {
    padding: 10px 12px;
  }
  
  .pool-stat .value {
    font-size: 14px;
  }
  
  .price-value {
    font-size: 17px;
  }
  
  .price-change-small {
    font-size: 12px;
  }
  
  .trade-preview-row {
    font-size: 12px;
  }
  
  .trade-preview-row.total .value {
    font-size: 14px;
  }
  
  .modal-sheet {
    padding: 20px 16px;
  }
  
  .referral-stats {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  
  .how-it-works {
    grid-template-columns: 1fr;
  }
  
  .link-box .link-row {
    flex-direction: column;
  }
  
  .link-box .link-row .btn {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .app-header {
    padding: 12px 16px;
  }
  
  .logo-img {
    height: 28px;
  }
  
  .logo-text {
    font-size: 16px;
  }
  
  .profile-circle {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }
  
  .header-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }
  
  .balance-amount {
    font-size: 24px;
  }
  
  .home-content,
  .assets-content,
  .trade-form-container {
    padding: 12px 16px;
  }
  
  .nav-item {
    padding: 4px 8px;
    min-width: 44px;
  }
  
  .nav-item .icon {
    font-size: 20px;
  }
  
  .nav-item .label {
    font-size: 9px;
  }
  
  .quick-action-btn .icon {
    font-size: 18px;
  }
  
  .quick-action-btn .label {
    font-size: 10px;
  }
  
  .asset-item {
    padding: 12px 14px;
  }
  
  .asset-balance {
    font-size: 14px;
  }
}

/* ============================================================
   TOUCH OPTIMIZATION
   ============================================================ */

@media (hover: none) {
  .btn:hover:not(:disabled) {
    transform: none !important;
  }
  
  .quick-action-btn:hover {
    border-color: var(--border-color);
    background: var(--bg-secondary);
  }
  
  .profile-circle:hover {
    transform: none;
    border-color: transparent;
  }
  
  .price-row:hover {
    border-color: var(--border-color);
    background: var(--bg-secondary);
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
  .bottom-nav,
  .header-icon,
  .quick-actions-grid,
  .action-buttons,
  .trade-type-tabs,
  .percent-buttons {
    display: none !important;
  }
  
  .app-container {
    max-width: 100%;
    padding: 0;
    border: none;
    box-shadow: none;
  }
  
  .balance-card,
  .price-row,
  .pool-stat,
  .asset-item {
    border-color: #333;
    background: #fff;
    color: #000;
  }
  
  .balance-amount,
  .price-value,
  .asset-balance {
    color: #000 !important;
  }
}