/**
 * Enhanced UI/UX Improvements for SitemapV3
 * Modern design system with improved accessibility and animations
 * Version: 1.0.0
 */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */
:root {
  /* Color Palette */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;
  
  --secondary-50: #f8fafc;
  --secondary-100: #f1f5f9;
  --secondary-200: #e2e8f0;
  --secondary-300: #cbd5e1;
  --secondary-400: #94a3b8;
  --secondary-500: #64748b;
  --secondary-600: #475569;
  --secondary-700: #334155;
  --secondary-800: #1e293b;
  --secondary-900: #0f172a;
  
  --success-50: #f0fdf4;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  
  --warning-50: #fffbeb;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  
  --error-50: #fef2f2;
  --error-500: #ef4444;
  --error-600: #dc2626;
  --error-700: #b91c1c;
  
  /* Typography */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ========================================
   MODERN RESET & BASE STYLES
   ======================================== */
.sitemapv3-enhanced-container {
  /* Enhanced container with better spacing and typography */
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6);
  font-family: var(--font-family-sans);
  line-height: var(--line-height-normal);
  color: var(--secondary-800);
  background: var(--secondary-50);
  min-height: 100vh;
}

.sitemapv3-enhanced-container * {
  box-sizing: border-box;
}

/* Improved focus styles for accessibility */
.sitemapv3-enhanced-container *:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* ========================================
   ENHANCED HEADER SECTION
   ======================================== */
.sitemapv3-header {
  background: #e2731f;
  border-radius: var(--radius-2xl);
  padding: var(--space-12);
  margin-bottom: var(--space-8);
  color: white;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Animated background pattern */
.sitemapv3-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%),
    linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.05) 50%, transparent 70%);
  animation: headerShimmer 8s ease-in-out infinite;
}

@keyframes headerShimmer {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.header-content {
  position: relative;
  z-index: 1;
}

.generator-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin: 0 0 var(--space-6) 0;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.title-icon {
  font-size: 1.2em;
  animation: titlePulse 2s ease-in-out infinite;
}

@keyframes titlePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.version-badge {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.4em;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition-normal);
}

.version-badge:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* ========================================
   ENHANCED TIER STATUS CARD
   ======================================== */
.tier-status-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-6);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.tier-status-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.tier-info {
  flex: 1;
}

.tier-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.tier-number {
  background: rgba(255, 255, 255, 0.3);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  border: 2px solid rgba(255, 255, 255, 0.4);
  transition: var(--transition-normal);
}

.tier-number:hover {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.4);
}

.tier-label {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.tier-limits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-4);
}

.limit-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-fast);
}

.limit-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(2px);
}

.limit-icon {
  font-size: 1.1em;
  opacity: 0.9;
}

.upgrade-hint {
  flex-shrink: 0;
}

.btn-upgrade {
  background: linear-gradient(45deg, var(--error-500), var(--error-600));
  color: white;
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.btn-upgrade::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: var(--transition-slow);
}

.btn-upgrade:hover::before {
  left: 100%;
}

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

/* ========================================
   ENHANCED GENERATOR INTERFACE
   ======================================== */
.generator-interface {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  margin-bottom: var(--space-8);
  border: 1px solid var(--secondary-200);
  transition: var(--transition-normal);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.generator-interface:hover {
  box-shadow: var(--shadow-2xl);
}

/* ========================================
   ENHANCED TAB SYSTEM
   ======================================== */
.input-methods-tabs {
  display: flex;
  background: var(--secondary-50);
  border-bottom: 1px solid var(--secondary-200);
  position: relative;
}

.tab-btn {
  flex: 1;
  padding: var(--space-5) var(--space-6);
  border: none;
  background: transparent;
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: var(--transition-normal);
  position: relative;
  color: var(--secondary-600);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tab-btn:not(.disabled):hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-700);
  transform: translateY(-1px);
}

.tab-btn.active {
  background: white;
  color: var(--primary-600);
  border-bottom: 3px solid var(--primary-600);
  font-weight: var(--font-weight-semibold);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-600);
  border-radius: var(--radius-full) var(--radius-full) 0 0;
}

.tab-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  color: var(--secondary-400);
}

.tab-icon {
  font-size: 1.1em;
  transition: var(--transition-fast);
}

.tab-btn:hover .tab-icon {
  transform: scale(1.1);
}

.premium-badge {
  background: linear-gradient(45deg, var(--primary-500), var(--primary-600));
  color: white;
  font-size: 0.7em;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-sm);
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ========================================
   ENHANCED TAB CONTENTS
   ======================================== */
.tab-contents {
  padding: var(--space-8);
}

.tab-content {
  display: none;
  animation: fadeInUp 0.3s ease-out;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   ENHANCED INPUT SECTION
   ======================================== */
.input-section {
  margin-bottom: var(--space-6);
}

.input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  font-weight: var(--font-weight-semibold);
  color: var(--secondary-700);
}

.url-counter {
  font-size: var(--font-size-sm);
  color: var(--secondary-600);
  background: var(--secondary-100);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
  border: 1px solid var(--secondary-200);
}

.url-counter.warning {
  color: var(--warning-700);
  background: var(--warning-50);
  border-color: var(--warning-200);
}

.url-counter.danger {
  color: var(--error-700);
  background: var(--error-50);
  border-color: var(--error-200);
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-2px); }
  75% { transform: translateX(2px); }
}

.url-textarea {
  width: 100%;
  min-height: 200px;
  padding: var(--space-4);
  border: 2px solid var(--secondary-200);
  border-radius: var(--radius-xl);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  resize: vertical;
  transition: var(--transition-normal);
  background: var(--secondary-50);
}

.url-textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: white;
}

.url-textarea::placeholder {
  color: var(--secondary-400);
  font-style: italic;
}

.input-help {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.help-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--secondary-600);
  padding: var(--space-2) var(--space-3);
  background: var(--secondary-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--secondary-200);
  transition: var(--transition-fast);
}

.help-item:hover {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
}

.help-icon {
  font-size: 1.1em;
}

/* ========================================
   ENHANCED FILE UPLOAD SECTION
   ======================================== */
.upload-section {
  text-align: center;
}

.upload-area {
  border: 2px dashed var(--primary-300);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-6);
  background: var(--primary-50);
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.upload-area::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: var(--transition-slow);
}

.upload-area:hover::before {
  left: 100%;
}

.upload-area:hover {
  border-color: var(--primary-500);
  background: var(--primary-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.upload-area.drag-over {
  border-color: var(--primary-600);
  background: var(--primary-200);
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

.upload-area.file-selected {
  border-color: var(--success-500);
  background: var(--success-50);
}

.upload-icon {
  font-size: 3em;
  margin-bottom: var(--space-4);
  color: var(--primary-500);
  transition: var(--transition-normal);
}

.upload-area:hover .upload-icon {
  transform: scale(1.1);
  color: var(--primary-600);
}

.upload-text h3 {
  margin: 0 0 var(--space-3) 0;
  color: var(--secondary-700);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xl);
}

.upload-text p {
  margin: 0;
  color: var(--secondary-600);
  font-size: var(--font-size-sm);
}

/* ========================================
   ENHANCED BUTTONS
   ======================================== */
.btn-generate {
  background: linear-gradient(45deg, var(--primary-600), var(--primary-700));
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-lg);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  overflow: hidden;
}

.btn-generate::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: var(--transition-slow);
}

.btn-generate:hover::before {
  left: 100%;
}

.btn-generate:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(45deg, var(--primary-700), var(--primary-800));
}

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

.btn-generate:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ========================================
   ENHANCED MOBILE RESPONSIVENESS
   ======================================== */
@media (max-width: 768px) {
  .sitemapv3-enhanced-container {
    padding: var(--space-4);
  }
  
  .sitemapv3-header {
    padding: var(--space-6);
    margin-bottom: var(--space-6);
  }
  
  .generator-title {
    font-size: var(--font-size-2xl);
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }
  
  .tier-status-card {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .tier-limits {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
  
  .input-methods-tabs {
    flex-direction: column;
  }
  
  .tab-btn {
    padding: var(--space-4);
    font-size: var(--font-size-xs);
  }
  
  .tab-contents {
    padding: var(--space-4);
  }
  
  .input-help {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .upload-area {
    padding: var(--space-6) var(--space-4);
  }
  
  .upload-text h3 {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 480px) {
  .sitemapv3-enhanced-container {
    padding: var(--space-2);
  }
  
  .sitemapv3-header {
    padding: var(--space-4);
    border-radius: var(--radius-xl);
  }
  
  .generator-title {
    font-size: var(--font-size-xl);
  }
  
  .tier-status-card {
    padding: var(--space-4);
  }
  
  .tab-contents {
    padding: var(--space-3);
  }
}

/* ========================================
   MODERN OPTIONS DESIGN
   ======================================== */
.option-group {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.option-group:hover {
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    border-color: var(--primary-300);
    transform: translateY(-2px);
}

.option-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.option-group:hover::before {
    opacity: 1;
}

.option-label {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
    display: block;
    position: relative;
}

.option-select,
.option-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    background: #f8fafc;
    color: #1e293b;
    transition: all 0.2s ease;
    font-family: inherit;
}

.option-select:focus,
.option-input:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.option-select option {
    padding: 0.5rem;
    background: white;
    color: #1e293b;
}

/* Modern colour picker styling */
input[type="color"] {
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

input[type="color"]:hover {
    transform: scale(1.05);
}

/* ========================================
   MODERN DESIGN PANEL
   ======================================== */
.modern-design-panel {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.modern-design-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
}

.panel-header {
    text-align: center;
    margin-bottom: 2rem;
}

.panel-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.panel-subtitle {
    color: #64748b;
    font-size: 1rem;
    margin: 0;
}

/* Live Preview Section - Full Width */
.live-preview-section-full {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.preview-header h4 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
}

.btn-refresh {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-refresh:hover {
    background: #e2e8f0;
    transform: scale(1.05);
}

.mini-preview-full {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #e2e8f0;
}

.preview-header-gradient {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    padding: 1.5rem;
    text-align: center;
}

.preview-header-gradient h2 {
    margin: 0 0 0.25rem 0;
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.preview-favicon {
    border-radius: 4px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    background: white;
    padding: 1px;
}

.preview-header-gradient p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.9;
}

.preview-content {
    background: white;
    padding: 1rem;
}

.preview-item {
    padding: 0.5rem 0;
    color: #374151;
    font-size: 0.875rem;
    border-bottom: 1px solid #f1f5f9;
}

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

/* Colour Selection Section */
.colour-selection-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    text-align: center;
}

.section-header h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    flex: 1;
    text-align: center;
}

.colour-mode-toggle {
    display: flex;
    background: #f1f5f9;
    border-radius: 8px;
    padding: 0.25rem;
}

.mode-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #1e293b;
    font-weight: 500;
}

.mode-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #dc2626;
}

.mode-btn.active {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    font-weight: 600;
    color: #1e293b;
}

/* Template Colours */
.template-row {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.template-card {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 120px;
    flex: 1;
}

.template-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.template-card.selected {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.template-card.disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
    background: #f8f9fa;
    border-color: #dee2e6;
}

.template-card.disabled:hover {
    border-color: #dee2e6;
    transform: none;
    box-shadow: none;
}

.template-preview {
    width: 100%;
    height: 60px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.template-card span {
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
}

/* Locked button styling */
.mode-btn.locked {
    background: #f3f4f6;
    color: #9ca3af;
    cursor: not-allowed;
    opacity: 0.7;
    position: relative;
}

.mode-btn.locked:hover {
    background: #f3f4f6;
    color: #9ca3af;
    transform: none;
    box-shadow: none;
}

/* Improved color template layout */
.colour-templates {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 1.5rem 0;
}

.template-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    width: 100%;
    max-width: 1200px;
}

/* Responsive improvements */
@media (max-width: 768px) {
    .template-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .template-row {
        grid-template-columns: 1fr;
    }
}

/* Custom Gradient Builder */
.custom-gradient-builder {
    background: #f8fafc;
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
}

.gradient-controls-compact {
    margin-bottom: 1.5rem;
}

.gradient-row {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.gradient-controls {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 1.5rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.gradient-direction label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

.direction-select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    background: white;
    font-size: 0.875rem;
}

.gradient-colours {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    justify-content: center;
    flex: 1;
}

.colour-picker-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
}

.colour-picker-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

.colour-picker-group input[type="color"] {
    width: 80px;
    height: 80px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    margin-bottom: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.colour-picker-group input[type="color"]:hover {
    transform: scale(1.05);
}

.colour-hex {
    display: block;
    font-size: 0.75rem;
    color: #64748b;
    font-family: monospace;
}

.gradient-preview-compact {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
}

.gradient-preview-large {
    text-align: center;
}

.compact-preview {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    margin: 0 auto 0.5rem;
    border: 2px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.large-preview {
    width: 120px;
    height: 80px;
    border-radius: 12px;
    margin: 0 auto 0.5rem;
    border: 2px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.gradient-presets h5 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
}

.preset-row {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 0.75rem;
}

.preset-btn {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.75rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.preset-btn:hover {
    border-color: var(--primary-500);
    transform: scale(1.05);
}

/* Title & Layout Section */
.title-layout-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group:last-child {
    margin-bottom: 0;
}

.modern-label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.modern-input,
.modern-select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    background: #f8fafc;
    color: #1e293b;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.modern-select {
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    appearance: none;
}

.modern-input:focus,
.modern-select:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Category Options Styles */
.checkbox-group {
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--secondary-700);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    margin: 0;
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--primary-500);
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.help-text {
    display: block;
    font-size: 0.75rem;
    color: var(--secondary-500);
    margin-top: 0.25rem;
    line-height: 1.4;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .gradient-controls {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .gradient-row {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .gradient-colours {
        flex-direction: column;
        gap: 1.5rem;
        width: 100%;
    }
    
    .colour-picker-group {
        min-width: auto;
    }
    
    .template-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
    
    .preset-grid {
        grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    }
    
    .title-layout-section {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .template-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modern-design-panel {
        padding: 1.5rem;
        margin: 1rem;
    }
}

/* ========================================
   ENHANCED ACCESSIBILITY
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .sitemapv3-enhanced-container {
    border: 2px solid var(--secondary-800);
  }
  
  .tier-status-card {
    border: 2px solid white;
  }
  
  .generator-interface {
    border: 2px solid var(--secondary-800);
  }
}

/* Dark mode support (if needed) */
@media (prefers-color-scheme: dark) {
  .sitemapv3-enhanced-container {
    background: var(--secondary-900);
    color: var(--secondary-100);
  }
  
  .generator-interface {
    background: var(--secondary-800);
    border-color: var(--secondary-700);
  }
  
  .url-textarea {
    background: var(--secondary-800);
    color: var(--secondary-100);
    border-color: var(--secondary-600);
  }
  
  .url-textarea:focus {
    background: var(--secondary-700);
    border-color: var(--primary-400);
  }
}

/* ========================================
   ENHANCED LOADING STATES
   ======================================== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ========================================
   ENHANCED TOOLTIPS
   ======================================== */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  width: 200px;
  background-color: var(--secondary-800);
  color: white;
  text-align: center;
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  position: absolute;
  z-index: var(--z-tooltip);
  bottom: 125%;
  left: 50%;
  margin-left: -100px;
  opacity: 0;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
}

.tooltip .tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--secondary-800) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* ========================================
   ENHANCED NOTIFICATIONS
   ======================================== */
.notification {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  color: white;
  font-weight: var(--font-weight-medium);
  z-index: var(--z-modal);
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: var(--transition-normal);
  max-width: 400px;
}

.notification.show {
  transform: translateX(0);
}

.notification.success {
  background: var(--success-500);
}

.notification.error {
  background: var(--error-500);
}

.notification.warning {
  background: var(--warning-500);
}

.notification.info {
  background: var(--primary-500);
}

/* ========================================
   URL SELECTION MODAL
   ======================================== */
.sitemapv3-modal { position: fixed; inset: 0; z-index: var(--z-modal); display: none; }
.sitemapv3-modal.show { display: block; }
.sitemapv3-modal .modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.45); backdrop-filter: blur(2px); }
.sitemapv3-modal .modal-content { position: relative; background: #fff; margin: 40px auto; max-width: 960px; border-radius: var(--radius-2xl); overflow: hidden; box-shadow: var(--shadow-2xl); animation: fadeInUp 0.25s ease-out; display: flex; flex-direction: column; }
.sitemapv3-modal .modal-header { display: flex; justify-content: space-between; align-items: center; padding: var(--space-4) var(--space-6); border-bottom: 1px solid var(--secondary-200); background: #fff; }
.sitemapv3-modal .modal-header h3 { margin: 0; font-size: var(--font-size-xl); color: var(--secondary-800); }
.sitemapv3-modal .modal-close { background: transparent; border: none; font-size: 22px; cursor: pointer; }
.sitemapv3-modal .modal-body { padding: var(--space-4) var(--space-6); flex: 1 1 auto; overflow: auto; }
.sitemapv3-modal .modal-footer { position: sticky; bottom: 0; display: flex; justify-content: space-between; align-items: center; padding: var(--space-3) var(--space-6); border-top: 1px solid var(--secondary-200); background: #fff; flex: 0 0 auto; box-shadow: 0 -6px 10px -8px rgba(0,0,0,0.15); }

.selection-toolbar { display: flex; gap: var(--space-3); align-items: center; position: sticky; top: 0; background: var(--secondary-50); z-index: 2; padding: var(--space-3) 0; border-bottom: 1px solid var(--secondary-200); }
.selection-search { flex: 1; padding: 10px 12px; border: 1px solid var(--secondary-300); border-radius: var(--radius-lg); background: #fff; color: var(--secondary-800); }
.selection-filter { padding: 10px 12px; border: 1px solid var(--secondary-300); border-radius: var(--radius-lg); background: #fff; color: var(--secondary-800); }
.selection-actions .btn-small { padding: 9px 12px; border: 1px solid transparent; background: var(--secondary-800); color: #fff; border-radius: var(--radius-lg); cursor: pointer; font-weight: var(--font-weight-medium); }
.selection-actions .btn-small:hover { background: var(--primary-700); }

.url-list-container { max-height: 440px; overflow: auto; border: 1px solid var(--secondary-200); border-radius: var(--radius-xl); }
.url-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-bottom: 1px solid var(--secondary-100); }
.url-item:last-child { border-bottom: none; }
.url-meta { color: var(--secondary-500); font-size: var(--font-size-sm); }

.btn-primary { background: var(--primary-600); color: #fff; border: none; padding: 10px 16px; border-radius: var(--radius-lg); cursor: pointer; box-shadow: var(--shadow-md); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; }
.btn-secondary { background: #fff; color: var(--secondary-800); border: 1px solid var(--secondary-300); padding: 10px 16px; border-radius: var(--radius-lg); cursor: pointer; box-shadow: var(--shadow-sm); }