/**
 * UI/UX Design Enhancements for BigData System
 * This file provides modern, accessible, and visually appealing styling
 */

/* Enhanced Color System */
:root {
  /* Primary Brand Colors */
  --brand-primary: #2563eb;
  --brand-primary-dark: #1d4ed8;
  --brand-primary-light: #3b82f6;
  
  /* Secondary Colors */
  --brand-secondary: #64748b;
  --brand-accent: #f59e0b;
  
  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #06b6d4;
  
  /* Neutral Colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f1f5f9;
  
  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  /* Enhanced Typography */
  --font-display: 'Kanit', sans-serif;
  --font-body: 'Prompt', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing Scale */
  --space-0: 0;
  --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;
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Enhanced Typography System */
.text-display-1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.text-display-2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.text-heading-1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.25;
}

.text-heading-2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
}

.text-heading-3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
}

.text-body-lg {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.6;
}

.text-body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
}

.text-body-sm {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-caption {
  font-family: var(--font-body);
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--text-muted);
}

/* Enhanced Button System */
.btn-enhanced {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

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

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

.btn-enhanced.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
  color: white;
  border-color: var(--brand-primary);
}

.btn-enhanced.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-primary-dark) 0%, var(--brand-primary) 100%);
  box-shadow: var(--shadow-lg);
}

.btn-enhanced.btn-secondary {
  background: var(--color-gray-100);
  color: var(--text-primary);
  border-color: var(--color-gray-300);
}

.btn-enhanced.btn-secondary:hover {
  background: var(--color-gray-200);
  border-color: var(--color-gray-400);
}

.btn-enhanced.btn-success {
  background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
  color: white;
}

.btn-enhanced.btn-warning {
  background: linear-gradient(135deg, var(--color-warning) 0%, #d97706 100%);
  color: white;
}

.btn-enhanced.btn-danger {
  background: linear-gradient(135deg, var(--color-danger) 0%, #dc2626 100%);
  color: white;
}

/* Button Sizes */
.btn-enhanced.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  min-height: 36px;
}

.btn-enhanced.btn-md {
  padding: var(--space-3) var(--space-5);
  font-size: 1rem;
  min-height: 44px;
}

.btn-enhanced.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: 1.125rem;
  min-height: 52px;
}

/* Enhanced Card System */
.card-enhanced {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card-enhanced:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-enhanced .card-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-6);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.card-enhanced .card-body {
  padding: var(--space-6);
}

.card-enhanced .card-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-gray-200);
  padding: var(--space-4) var(--space-6);
}

/* Enhanced Form Controls */
.form-control-enhanced {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-control-enhanced:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control-enhanced::placeholder {
  color: var(--color-gray-400);
}

/* Form Groups */
.form-group-enhanced {
  margin-bottom: var(--space-5);
}

.form-label-enhanced {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.form-help-text {
  margin-top: var(--space-1);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Enhanced Table System */
.table-enhanced {
  width: 100%;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}

.table-enhanced thead {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-accent) 100%);
}

.table-enhanced thead th {
  padding: var(--space-4) var(--space-6);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  border-bottom: 2px solid var(--color-gray-200);
  text-align: left;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-enhanced tbody td {
  padding: var(--space-4) var(--space-6);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

.table-enhanced tbody tr:hover {
  background: var(--bg-secondary);
}

.table-enhanced tbody tr:last-child td {
  border-bottom: none;
}

/* Enhanced Alert System */
.alert-enhanced {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-enhanced .alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.alert-enhanced.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.alert-enhanced.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border-color: #fde68a;
}

.alert-enhanced.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

.alert-enhanced.alert-info {
  background: #f0f9ff;
  color: #0c4a6e;
  border-color: #bae6fd;
}

/* Enhanced Progress Bars */
.progress-enhanced {
  height: 8px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-enhanced .progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-primary-light) 100%);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
}

.progress-enhanced .progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}

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

/* Enhanced Badge System */
.badge-enhanced {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-enhanced.badge-primary {
  background: var(--brand-primary);
  color: white;
}

.badge-enhanced.badge-success {
  background: var(--color-success);
  color: white;
}

.badge-enhanced.badge-warning {
  background: var(--color-warning);
  color: white;
}

.badge-enhanced.badge-danger {
  background: var(--color-danger);
  color: white;
}

.badge-enhanced.badge-secondary {
  background: var(--color-gray-200);
  color: var(--text-primary);
}

/* Enhanced Navigation */
.nav-enhanced {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.nav-enhanced .nav-link {
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-enhanced .nav-link:hover {
  background: var(--bg-accent);
  color: var(--brand-primary);
}

.nav-enhanced .nav-link.active {
  background: var(--brand-primary);
  color: white;
}

/* Enhanced Dropdown */
.dropdown-enhanced {
  position: relative;
  display: inline-block;
}

.dropdown-enhanced .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
}

.dropdown-enhanced.show .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-enhanced .dropdown-item {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-enhanced .dropdown-item:hover {
  background: var(--bg-accent);
  color: var(--brand-primary);
}

/* Utility Classes */
.text-gradient {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glassmorphism {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.neumorphism {
  background: #f0f0f0;
  border-radius: var(--radius-xl);
  box-shadow: 20px 20px 60px #d0d0d0, -20px -20px 60px #ffffff;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-accent: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --color-gray-100: #1e293b;
    --color-gray-200: #334155;
    --color-gray-300: #475569;
  }
  
  .card-enhanced {
    background: var(--bg-secondary);
    border-color: var(--color-gray-300);
  }
  
  .form-control-enhanced {
    background: var(--bg-secondary);
    border-color: var(--color-gray-300);
    color: var(--text-primary);
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

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

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

@keyframes scaleIn {
  from { 
    opacity: 0;
    transform: scale(0.9);
  }
  to { 
    opacity: 1;
    transform: scale(1);
  }
}

/* Focus Indicators for Accessibility */
.focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}