/**
 * ===============================================================================================
 * LOFI SWAP MODAL REDESIGN - Modern DeFi UI/UX
 * ===============================================================================================
 * 
 * Complete redesign of the swap modal following best practices from:
 * - Uniswap V3
 * - PancakeSwap
 * - Turbos Finance
 * 
 * Features:
 * - Mobile-first responsive design
 * - Dark theme with purple/blue LOFI gradients
 * - Dynamic token images with fallbacks
 * - Smooth animations and transitions
 * - Touch-friendly controls
 * - Web3 standard compliance
 * 
 * ===============================================================================================
 */

/* ===============================================================================================
 * ROOT VARIABLES - LOFI Design System
 * ===============================================================================================
 */
:root {
  /* LOFI Brand Colors */
  --lofi-swap-primary: #4F76FF;
  --lofi-swap-primary-light: #6b8bff;
  --lofi-swap-primary-dark: #3a5ed8;
  --lofi-swap-secondary: #a8b8ed;
  --lofi-swap-accent: #4F76FF;
  --lofi-swap-accent-dim: rgba(79, 118, 255, 0.1);
  
  /* Background Colors - Dark Theme to match modal.PNG */
  --lofi-swap-bg-main: #2a2d5e;
  --lofi-swap-bg-card: rgba(42, 45, 94, 0.9);
  --lofi-swap-bg-input: rgba(42, 45, 94, 0.8);
  --lofi-swap-bg-hover: rgba(42, 45, 94, 0.95);
  --lofi-swap-bg-active: rgba(79, 118, 255, 0.1);
  
  /* Text Colors - Light text for dark theme */
  --lofi-swap-text-primary: #ffffff;
  --lofi-swap-text-secondary: #a8b8ed;
  --lofi-swap-text-muted: #8898cd;
  --lofi-swap-text-disabled: #5568a0;
  
  /* Border Colors - Subtle purple/blue tints */
  --lofi-swap-border-default: rgba(138, 138, 237, 0.2);
  --lofi-swap-border-hover: rgba(138, 138, 237, 0.4);
  --lofi-swap-border-active: rgba(138, 138, 237, 0.6);
  --lofi-swap-border-focus: #8a8aed;
  
  /* Status Colors */
  --lofi-swap-success: #10b981;
  --lofi-swap-warning: #f59e0b;
  --lofi-swap-error: #ef4444;
  --lofi-swap-info: #3b82f6;
  
  /* Spacing Scale */
  --lofi-swap-space-xs: 4px;
  --lofi-swap-space-sm: 8px;
  --lofi-swap-space-md: 16px;
  --lofi-swap-space-lg: 24px;
  --lofi-swap-space-xl: 32px;
  --lofi-swap-space-2xl: 48px;
  
  /* Border Radius */
  --lofi-swap-radius-sm: 8px;
  --lofi-swap-radius-md: 12px;
  --lofi-swap-radius-lg: 16px;
  --lofi-swap-radius-xl: 20px;
  --lofi-swap-radius-full: 9999px;
  
  /* Transitions */
  --lofi-swap-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --lofi-swap-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --lofi-swap-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows - Dark Theme with Purple Glow */
  --lofi-swap-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --lofi-swap-shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --lofi-swap-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  --lofi-swap-shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.6);
  --lofi-swap-shadow-glow: 0 0 30px rgba(138, 138, 237, 0.3);
}

/* ===============================================================================================
 * MODAL OVERLAY & CONTAINER
 * ===============================================================================================
 */
#lofi-swap-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--lofi-swap-space-md);
  opacity: 0;
  transition: opacity var(--lofi-swap-transition-slow);
}

#lofi-swap-modal.show {
  opacity: 1;
}

.lofi-swap-container {
  background: linear-gradient(180deg, #2a2d5e 0%, #1a1d3e 100%);
  border: 2px solid var(--lofi-swap-border-default);
  border-radius: var(--lofi-swap-radius-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--lofi-swap-shadow-xl), var(--lofi-swap-shadow-glow);
  transform: scale(0.95) translateY(20px);
  transition: transform var(--lofi-swap-transition-slow), box-shadow var(--lofi-swap-transition-slow);
}

#lofi-swap-modal.show .lofi-swap-container {
  transform: scale(1) translateY(0);
}

/* ===============================================================================================
 * MODAL HEADER
 * ===============================================================================================
 */
.lofi-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--lofi-swap-space-lg);
  border-bottom: 1px solid var(--lofi-swap-border-default);
}

.lofi-modal-header h2 {
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--lofi-swap-primary);
  margin: 0;
}

.lofi-modal-close {
  width: 40px;
  height: 40px;
  border-radius: var(--lofi-swap-radius-full);
  border: 1px solid var(--lofi-swap-border-default);
  background: transparent;
  color: var(--lofi-swap-text-secondary);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--lofi-swap-transition-base);
  box-shadow: var(--lofi-swap-shadow-sm);
}

.lofi-modal-close:hover {
  background: var(--lofi-swap-bg-hover);
  border-color: var(--lofi-swap-border-hover);
  color: var(--lofi-swap-text-primary);
  transform: rotate(90deg);
  box-shadow: var(--lofi-swap-shadow-md);
}

/* ===============================================================================================
 * SWAP CONTENT
 * ===============================================================================================
 */
.lofi-modal-content {
  padding: var(--lofi-swap-space-lg);
}

/* Swap Direction Toggle */
.swap-direction-container {
  margin-bottom: var(--lofi-swap-space-lg);
}

.swap-direction-toggle {
  width: 100%;
  background: var(--lofi-swap-bg-card);
  border: 1px solid var(--lofi-swap-border-default);
  border-radius: var(--lofi-swap-radius-lg);
  padding: var(--lofi-swap-space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--lofi-swap-space-md);
  cursor: pointer;
  transition: all var(--lofi-swap-transition-base);
  color: var(--lofi-swap-text-primary);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.swap-direction-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--lofi-swap-accent-dim), transparent);
  transition: left var(--lofi-swap-transition-slow);
}

.swap-direction-toggle:hover {
  background: var(--lofi-swap-bg-hover);
  border-color: var(--lofi-swap-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--lofi-swap-shadow-md);
}

.swap-direction-toggle:hover::before {
  left: 100%;
}

.swap-direction-toggle:active {
  transform: translateY(0);
}

.swap-direction-from,
.swap-direction-to {
  display: flex;
  align-items: center;
  gap: var(--lofi-swap-space-sm);
}

.token-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--lofi-swap-radius-full);
  background: rgba(138, 138, 237, 0.1);
  object-fit: cover;
  border: 2px solid var(--lofi-swap-border-default);
}

.token-symbol {
  font-size: 18px;
  font-weight: 600;
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reduce text size for token symbols in input/output sections */
.swap-input-symbol,
.swap-output-symbol {
  font-size: 14px;
  font-weight: 500;
  color: var(--lofi-swap-text-primary) !important; /* Ensure light text on dark background */
}

.swap-arrow {
  width: 24px;
  height: 24px;
  color: var(--lofi-swap-primary);
  transition: transform var(--lofi-swap-transition-slow);
}

.swap-direction-toggle:hover .swap-arrow {
  transform: rotate(180deg);
}

/* ===============================================================================================
 * INPUT/OUTPUT SECTIONS
 * ===============================================================================================
 */
.swap-input-section,
.swap-output-section {
  margin-bottom: var(--lofi-swap-space-lg);
}

.swap-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--lofi-swap-text-secondary);
  margin-bottom: var(--lofi-swap-space-sm);
}

.swap-input-container,
.swap-output-container {
  background: var(--lofi-swap-bg-input);
  border: 2px solid var(--lofi-swap-border-default);
  border-radius: var(--lofi-swap-radius-lg);
  padding: var(--lofi-swap-space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lofi-swap-space-md);
  transition: all var(--lofi-swap-transition-base);
  position: relative;
  box-shadow: var(--lofi-swap-shadow-sm), inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.swap-input-container:hover {
  border-color: var(--lofi-swap-border-hover);
  background: var(--lofi-swap-bg-hover);
}

.swap-input-container:focus-within {
  border-color: var(--lofi-swap-border-focus);
  box-shadow: 0 0 0 3px rgba(138, 138, 237, 0.3), var(--lofi-swap-shadow-md);
}

.swap-amount-input {
  background: transparent;
  border: none;
  color: var(--lofi-swap-text-primary);
  font-size: 28px;
  font-weight: 600;
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, monospace;
  outline: none;
  flex: 1;
  min-width: 0;
  text-align: left;
}

.swap-amount-input::placeholder {
  color: var(--lofi-swap-text-disabled);
}

.swap-amount-input::-webkit-inner-spin-button,
.swap-amount-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.swap-input-token,
.swap-output-token {
  display: flex;
  align-items: center;
  gap: var(--lofi-swap-space-sm);
  background: rgba(138, 138, 237, 0.1);
  padding: var(--lofi-swap-space-sm) var(--lofi-swap-space-md);
  border-radius: var(--lofi-swap-radius-full);
  border: 1px solid var(--lofi-swap-border-default);
  white-space: nowrap;
  color: var(--lofi-swap-text-primary);
  box-shadow: var(--lofi-swap-shadow-sm);
}

.token-icon-small {
  width: 24px;
  height: 24px;
  border-radius: var(--lofi-swap-radius-full);
  background: rgba(138, 138, 237, 0.1);
  object-fit: cover;
}

.swap-output-amount {
  font-size: 28px;
  font-weight: 600;
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, monospace;
  color: var(--lofi-swap-primary);
  text-align: left;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.swap-balance,
.swap-rate {
  font-size: 13px;
  color: var(--lofi-swap-text-muted);
  margin-top: var(--lofi-swap-space-sm);
  display: flex;
  align-items: center;
  gap: var(--lofi-swap-space-xs);
}

.swap-balance span {
  color: var(--lofi-swap-text-secondary);
}

/* ===============================================================================================
 * SLIPPAGE SETTINGS
 * ===============================================================================================
 */
.swap-slippage-section {
  margin-bottom: var(--lofi-swap-space-lg);
  background: var(--lofi-swap-bg-card);
  border-radius: var(--lofi-swap-radius-lg);
  padding: var(--lofi-swap-space-md);
  border: 1px solid var(--lofi-swap-border-default);
  box-shadow: var(--lofi-swap-shadow-sm);
}

.swap-slippage-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--lofi-swap-space-sm);
  margin-top: var(--lofi-swap-space-sm);
}

.slippage-option {
  padding: var(--lofi-swap-space-sm) var(--lofi-swap-space-md);
  background: var(--lofi-swap-bg-card);
  border: 1px solid var(--lofi-swap-border-default);
  border-radius: var(--lofi-swap-radius-md);
  color: var(--lofi-swap-text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--lofi-swap-transition-base);
  text-align: center;
  box-shadow: var(--lofi-swap-shadow-sm);
}

.slippage-option:hover {
  background: var(--lofi-swap-bg-active);
  border-color: var(--lofi-swap-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--lofi-swap-shadow-md);
}

.slippage-option.active {
  background: var(--lofi-swap-primary);
  border-color: var(--lofi-swap-primary);
  color: white;
  box-shadow: 0 0 0 2px rgba(79, 118, 255, 0.2), var(--lofi-swap-shadow-md);
}

.slippage-option.active:hover {
  background: var(--lofi-swap-primary-dark);
  border-color: var(--lofi-swap-primary-dark);
}

.custom-slippage-input {
  margin-top: var(--lofi-swap-space-md);
  display: flex;
  align-items: center;
  gap: var(--lofi-swap-space-sm);
}

.custom-slippage-input input {
  flex: 1;
  background: var(--lofi-swap-bg-input);
  border: 1px solid var(--lofi-swap-border-default);
  border-radius: var(--lofi-swap-radius-md);
  padding: var(--lofi-swap-space-sm) var(--lofi-swap-space-md);
  color: var(--lofi-swap-text-primary);
  font-size: 16px;
  outline: none;
  transition: all var(--lofi-swap-transition-base);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

.custom-slippage-input input:focus {
  border-color: var(--lofi-swap-border-focus);
  box-shadow: 0 0 0 3px var(--lofi-swap-accent-dim);
}

.custom-slippage-input span {
  color: var(--lofi-swap-text-secondary);
  font-size: 16px;
  font-weight: 500;
}

/* ===============================================================================================
 * TRANSACTION DETAILS
 * ===============================================================================================
 */
.swap-details {
  background: var(--lofi-swap-bg-card);
  border-radius: var(--lofi-swap-radius-lg);
  padding: var(--lofi-swap-space-md);
  margin-bottom: var(--lofi-swap-space-lg);
  border: 1px solid var(--lofi-swap-border-default);
  box-shadow: var(--lofi-swap-shadow-sm);
}

.swap-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--lofi-swap-space-sm) 0;
  font-size: 14px;
}

.swap-detail-row:not(:last-child) {
  border-bottom: 1px solid var(--lofi-swap-border-default);
}

.swap-detail-row span:first-child {
  color: var(--lofi-swap-text-secondary);
  font-weight: 400;
}

.swap-detail-row span:last-child {
  color: var(--lofi-swap-text-primary);
  font-weight: 500;
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, monospace;
}

.price-impact-low {
  color: var(--lofi-swap-success);
}

.price-impact-medium {
  color: var(--lofi-swap-warning);
}

.price-impact-high {
  color: var(--lofi-swap-error);
}

/* ===============================================================================================
 * EXECUTE BUTTON
 * ===============================================================================================
 */
.swap-execute-btn {
  width: 100%;
  padding: var(--lofi-swap-space-md) var(--lofi-swap-space-lg);
  background: var(--lofi-swap-primary);
  border: none;
  border-radius: var(--lofi-swap-radius-lg);
  color: white !important;
  font-size: 18px;
  font-weight: 700;
  font-family: 'Gluten', -apple-system, BlinkMacSystemFont, sans-serif;
  cursor: pointer;
  transition: all var(--lofi-swap-transition-base);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.swap-execute-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.swap-execute-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(79, 118, 255, 0.4), var(--lofi-swap-shadow-glow);
  background: var(--lofi-swap-primary-dark);
}

.swap-execute-btn:hover:not(:disabled)::before {
  left: 100%;
}

.swap-execute-btn:active:not(:disabled) {
  transform: translateY(-1px);
}

.swap-execute-btn:disabled {
  background: rgba(42, 45, 94, 0.5);
  color: var(--lofi-swap-text-disabled);
  cursor: not-allowed;
  transform: none;
}

.swap-execute-btn.loading {
  color: transparent;
}

.swap-execute-btn.loading::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  top: 50%;
  left: 50%;
  margin-left: -12px;
  margin-top: -12px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: lofi-spin 0.8s linear infinite;
}

/* ===============================================================================================
 * TRANSACTION STATUS
 * ===============================================================================================
 */
.swap-status {
  text-align: center;
  padding: var(--lofi-swap-space-xl) var(--lofi-swap-space-lg);
  background: var(--lofi-swap-bg-card);
  border-radius: var(--lofi-swap-radius-lg);
  margin-top: var(--lofi-swap-space-lg);
  border: 1px solid var(--lofi-swap-border-default);
  box-shadow: var(--lofi-swap-shadow-sm);
}

.status-icon {
  margin-bottom: var(--lofi-swap-space-md);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--lofi-swap-border-default);
  border-top-color: var(--lofi-swap-primary);
  border-radius: 50%;
  animation: lofi-spin 1s linear infinite;
  margin: 0 auto;
}

.status-message {
  font-size: 16px;
  color: var(--lofi-swap-text-secondary);
  font-weight: 500;
}

.swap-status.success .status-icon::after,
.swap-status.error .status-icon::after {
  content: '';
  display: block;
  width: 48px;
  height: 48px;
  margin: 0 auto;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
}

.swap-status.success .status-icon::after {
  content: '✓';
  background: var(--lofi-swap-success);
  color: white;
}

.swap-status.error .status-icon::after {
  content: '✗';
  background: var(--lofi-swap-error);
  color: white;
}

/* ===============================================================================================
 * ANIMATIONS
 * ===============================================================================================
 */
@keyframes lofi-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

@keyframes lofi-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

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

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  .lofi-swap-container {
    max-width: 90%;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  #lofi-swap-modal {
    padding: 0;
    align-items: flex-end;
  }
  
  .lofi-swap-container {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--lofi-swap-radius-xl) var(--lofi-swap-radius-xl) 0 0;
    margin: 0;
  }
  
  .lofi-modal-header {
    padding: var(--lofi-swap-space-md);
  }
  
  .lofi-modal-header h2 {
    font-size: 20px;
  }
  
  .lofi-modal-content {
    padding: var(--lofi-swap-space-md);
  }
  
  .swap-amount-input,
  .swap-output-amount {
    font-size: 24px;
  }
  
  .swap-slippage-options {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .swap-execute-btn {
    font-size: 16px;
    padding: var(--lofi-swap-space-md);
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  .lofi-modal-header h2 {
    font-size: 18px;
  }
  
  .token-icon {
    width: 28px;
    height: 28px;
  }
  
  .token-symbol {
    font-size: 16px;
  }
  
  .swap-amount-input,
  .swap-output-amount {
    font-size: 20px;
  }
  
  .swap-direction-toggle {
    padding: var(--lofi-swap-space-sm);
    gap: var(--lofi-swap-space-sm);
  }
}

/* ===============================================================================================
 * UTILITY CLASSES
 * ===============================================================================================
 */
.lofi-loading {
  position: relative;
  overflow: hidden;
}

.lofi-loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(168, 184, 237, 0.1),
    transparent
  );
  animation: lofi-shimmer 1.5s infinite;
}

.lofi-skeleton {
  background: var(--lofi-swap-bg-hover);
  border-radius: var(--lofi-swap-radius-sm);
  animation: lofi-pulse 1.5s infinite;
}

/* Scrollbar Styling */
.lofi-swap-container::-webkit-scrollbar {
  width: 8px;
}

.lofi-swap-container::-webkit-scrollbar-track {
  background: var(--lofi-swap-bg-hover);
  border-radius: var(--lofi-swap-radius-sm);
}

.lofi-swap-container::-webkit-scrollbar-thumb {
  background: var(--lofi-swap-border-hover);
  border-radius: var(--lofi-swap-radius-sm);
}

.lofi-swap-container::-webkit-scrollbar-thumb:hover {
  background: var(--lofi-swap-primary);
}

/* Focus Visible for Accessibility */
.lofi-modal-close:focus-visible,
.swap-direction-toggle:focus-visible,
.slippage-option:focus-visible,
.swap-execute-btn:focus-visible {
  outline: 2px solid rgba(138, 138, 237, 0.8);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(138, 138, 237, 0.2);
}

/* Disabled State */
.swap-input-container.disabled,
.swap-output-container.disabled {
  opacity: 0.6;
  pointer-events: none;
}

/* Error State */
.swap-input-container.error {
  border-color: var(--lofi-swap-error);
}

.swap-input-container.error:focus-within {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Success State */
.swap-output-container.success {
  border-color: var(--lofi-swap-success);
  background: rgba(16, 185, 129, 0.05);
}