/* 
 * ME-QR Clone - Advanced Glassmorphism CSS Framework
 * Modern Glassmorphism Design System with Dark/Light Theme Support
 * Mobile-First Responsive Design
 * Version: 2.0.0
 */

/* ==========================================================================
   CSS Variables & Theme System
   ========================================================================== */

:root {
  /* Light Theme Color Palette */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  /* Extended Color Palette */
  --secondary-50: #fdf4ff;
  --secondary-100: #fae8ff;
  --secondary-200: #f5d0fe;
  --secondary-300: #f0abfc;
  --secondary-400: #e879f9;
  --secondary-500: #d946ef;
  --secondary-600: #c026d3;
  --secondary-700: #a21caf;
  --secondary-800: #86198f;
  --secondary-900: #701a75;

  /* Semantic Colors */
  --success-50: #f0fdf4;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  
  --warning-50: #fffbeb;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  
  --danger-50: #fef2f2;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --danger-700: #b91c1c;
  
  --info-50: #f0f9ff;
  --info-500: #06b6d4;
  --info-600: #0891b2;
  --info-700: #0e7490;

  /* Glass Morphism Base Variables */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-strong: rgba(255, 255, 255, 0.25);
  --glass-bg-light: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-border-light: rgba(255, 255, 255, 0.1);
  --glass-border-strong: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --glass-shadow-light: 0 4px 16px 0 rgba(31, 38, 135, 0.15);
  --glass-shadow-strong: 0 16px 64px 0 rgba(31, 38, 135, 0.5);
  
  /* Backdrop Blur Levels */
  --backdrop-none: none;
  --backdrop-xs: blur(2px);
  --backdrop-sm: blur(4px);
  --backdrop-md: blur(8px);
  --backdrop-lg: blur(16px);
  --backdrop-xl: blur(24px);
  --backdrop-2xl: blur(40px);
  --backdrop-3xl: blur(64px);

  /* Gradient Backgrounds */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-danger: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
  --gradient-info: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-rainbow: linear-gradient(135deg, #ff9a9e 0%, #fecfef 25%, #fecfef 50%, #a8edea 75%, #fed6e3 100%);
  --gradient-ocean: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-sunset: linear-gradient(135deg, #ff7e5f 0%, #feb47b 100%);
  --gradient-forest: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
  
  /* Background Gradients */
  --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-dark: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
  --bg-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --bg-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-family-display: 'Poppins', var(--font-family-primary);
  --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;
  --text-8xl: 6rem;
  --text-9xl: 8rem;
  
  /* Font Weights */
  --font-thin: 100;
  --font-extralight: 200;
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0em;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;
  
  /* Spacing Scale */
  --space-px: 1px;
  --space-0: 0;
  --space-0-5: 0.125rem;
  --space-1: 0.25rem;
  --space-1-5: 0.375rem;
  --space-2: 0.5rem;
  --space-2-5: 0.625rem;
  --space-3: 0.75rem;
  --space-3-5: 0.875rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-9: 2.25rem;
  --space-10: 2.5rem;
  --space-11: 2.75rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-28: 7rem;
  --space-32: 8rem;
  --space-36: 9rem;
  --space-40: 10rem;
  --space-44: 11rem;
  --space-48: 12rem;
  --space-52: 13rem;
  --space-56: 14rem;
  --space-60: 15rem;
  --space-64: 16rem;
  --space-72: 18rem;
  --space-80: 20rem;
  --space-96: 24rem;
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-4xl: 2rem;
  --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-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 50px 100px -20px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-none: 0 0 transparent;
  
  /* Glow Effects */
  --glow-primary: 0 0 20px rgba(102, 126, 234, 0.5);
  --glow-secondary: 0 0 20px rgba(240, 147, 251, 0.5);
  --glow-success: 0 0 20px rgba(34, 197, 94, 0.5);
  --glow-warning: 0 0 20px rgba(245, 158, 11, 0.5);
  --glow-danger: 0 0 20px rgba(239, 68, 68, 0.5);
  --glow-info: 0 0 20px rgba(6, 182, 212, 0.5);
  
  /* Transitions */
  --transition-none: none;
  --transition-all: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-colors: color 0.15s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-opacity: opacity 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-shadow: box-shadow 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-transform: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index */
  --z-auto: auto;
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Dark Theme */
[data-theme="dark"] {
  --glass-bg: rgba(0, 0, 0, 0.2);
  --glass-bg-strong: rgba(0, 0, 0, 0.35);
  --glass-bg-light: rgba(0, 0, 0, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-light: rgba(255, 255, 255, 0.05);
  --glass-border-strong: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --glass-shadow-light: 0 4px 16px 0 rgba(0, 0, 0, 0.3);
  --glass-shadow-strong: 0 16px 64px 0 rgba(0, 0, 0, 0.6);
  
  --bg-primary: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --bg-light: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */

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

html {
  font-size: 16px;
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: #1a1a1a;
  background: var(--bg-primary);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Animated Background with Multiple Layers */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-rainbow);
  opacity: 0.1;
  z-index: -3;
  animation: gradientShift 15s ease infinite;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(240, 147, 251, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(79, 70, 229, 0.1) 0%, transparent 50%);
  z-index: -2;
  animation: float 20s ease-in-out infinite;
}

body .bg-pattern {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  z-index: -1;
  pointer-events: none;
  animation: patternMove 50s linear infinite;
}

@keyframes gradientShift {
  0%, 100% { 
    opacity: 0.1; 
    transform: scale(1) rotate(0deg);
  }
  33% { 
    opacity: 0.15; 
    transform: scale(1.1) rotate(1deg);
  }
  66% { 
    opacity: 0.12; 
    transform: scale(0.95) rotate(-1deg);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(1deg);
  }
  66% {
    transform: translateY(-10px) rotate(-1deg);
  }
}

@keyframes patternMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  color: #1a1a1a;
  letter-spacing: var(--tracking-tight);
}

h1 { 
  font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl)); 
  font-weight: var(--font-bold);
}
h2 { 
  font-size: clamp(var(--text-2xl), 4vw, var(--text-5xl)); 
  font-weight: var(--font-bold);
}
h3 { 
  font-size: clamp(var(--text-xl), 3vw, var(--text-4xl)); 
  font-weight: var(--font-semibold);
}
h4 { 
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-3xl)); 
  font-weight: var(--font-semibold);
}
h5 { 
  font-size: clamp(var(--text-base), 2vw, var(--text-2xl)); 
  font-weight: var(--font-medium);
}
h6 { 
  font-size: var(--text-lg); 
  font-weight: var(--font-medium);
}

p {
  margin-bottom: var(--space-4);
  color: rgba(26, 26, 26, 0.8);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: var(--transition-colors);
}

a:hover {
  color: var(--primary-700);
}

/* Typography Utilities */
.text-xs { font-size: var(--text-xs) !important; }
.text-sm { font-size: var(--text-sm) !important; }
.text-base { font-size: var(--text-base) !important; }
.text-lg { font-size: var(--text-lg) !important; }
.text-xl { font-size: var(--text-xl) !important; }
.text-2xl { font-size: var(--text-2xl) !important; }
.text-3xl { font-size: var(--text-3xl) !important; }
.text-4xl { font-size: var(--text-4xl) !important; }
.text-5xl { font-size: var(--text-5xl) !important; }

.font-thin { font-weight: var(--font-thin) !important; }
.font-extralight { font-weight: var(--font-extralight) !important; }
.font-light { font-weight: var(--font-light) !important; }
.font-normal { font-weight: var(--font-normal) !important; }
.font-medium { font-weight: var(--font-medium) !important; }
.font-semibold { font-weight: var(--font-semibold) !important; }
.font-bold { font-weight: var(--font-bold) !important; }
.font-extrabold { font-weight: var(--font-extrabold) !important; }
.font-black { font-weight: var(--font-black) !important; }

.leading-none { line-height: var(--leading-none) !important; }
.leading-tight { line-height: var(--leading-tight) !important; }
.leading-snug { line-height: var(--leading-snug) !important; }
.leading-normal { line-height: var(--leading-normal) !important; }
.leading-relaxed { line-height: var(--leading-relaxed) !important; }
.leading-loose { line-height: var(--leading-loose) !important; }

.tracking-tighter { letter-spacing: var(--tracking-tighter) !important; }
.tracking-tight { letter-spacing: var(--tracking-tight) !important; }
.tracking-normal { letter-spacing: var(--tracking-normal) !important; }
.tracking-wide { letter-spacing: var(--tracking-wide) !important; }
.tracking-wider { letter-spacing: var(--tracking-wider) !important; }
.tracking-widest { letter-spacing: var(--tracking-widest) !important; }

/* Gradient Text Effects */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-purple {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-secondary {
  background: var(--gradient-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-success {
  background: var(--gradient-success);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-warning {
  background: var(--gradient-warning);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-danger {
  background: var(--gradient-danger);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.text-gradient-info {
  background: var(--gradient-info);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Glass Morphism Components
   ========================================================================== */

/* Base Glass Effect */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-2xl);
}

/* Glass Strength Variants */
.glass-sm {
  background: var(--glass-bg-light);
  backdrop-filter: var(--backdrop-sm);
  -webkit-backdrop-filter: var(--backdrop-sm);
  border: 1px solid var(--glass-border-light);
  box-shadow: var(--glass-shadow-light);
}

.glass-lg {
  background: var(--glass-bg-strong);
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--glass-shadow-strong);
}

.glass-xl {
  background: var(--glass-bg-strong);
  backdrop-filter: var(--backdrop-2xl);
  -webkit-backdrop-filter: var(--backdrop-2xl);
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--glass-shadow-strong);
}

/* Glass Color Variants */
.glass-primary {
  background: rgba(102, 126, 234, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(102, 126, 234, 0.3);
  box-shadow: var(--glow-primary);
}

.glass-secondary {
  background: rgba(240, 147, 251, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(240, 147, 251, 0.3);
  box-shadow: var(--glow-secondary);
}

.glass-success {
  background: rgba(34, 197, 94, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(34, 197, 94, 0.3);
  box-shadow: var(--glow-success);
}

.glass-warning {
  background: rgba(245, 158, 11, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(245, 158, 11, 0.3);
  box-shadow: var(--glow-warning);
}

.glass-danger {
  background: rgba(239, 68, 68, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(239, 68, 68, 0.3);
  box-shadow: var(--glow-danger);
}

.glass-info {
  background: rgba(6, 182, 212, 0.15);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(6, 182, 212, 0.3);
  box-shadow: var(--glow-info);
}

/* Dark Theme Glass */
.glass-dark {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

/* Glass Animated */
.glass-animated {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-3xl);
  box-shadow: 
    var(--glass-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
  transition: var(--transition-slow);
}

.glass-animated::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.8s ease;
}

.glass-animated:hover::before {
  left: 100%;
}

.glass-animated:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.3),
    var(--glow-primary);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: var(--space-6);
  transition: var(--transition-slow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.6s ease;
  z-index: 1;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  border-color: var(--primary-400);
}

.card > * {
  position: relative;
  z-index: 2;
}

/* Card Variants */
.card-glassmorphic {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-3xl);
  box-shadow: 
    0 8px 32px 0 rgba(31, 38, 135, 0.37),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.card-elevated {
  transform: translateY(0);
  transition: var(--transition-slow);
}

.card-elevated:hover {
  transform: translateY(-12px) rotateX(5deg);
  box-shadow: 
    0 25px 80px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(102, 126, 234, 0.2);
}

.card-compact {
  padding: var(--space-4);
  border-radius: var(--radius-xl);
}

.card-large {
  padding: var(--space-8);
  border-radius: var(--radius-3xl);
}

/* Card with Header */
.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--glass-border);
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.card-subtitle {
  font-size: var(--text-sm);
  color: rgba(26, 26, 26, 0.7);
  margin-bottom: 0;
}

/* Card with Footer */
.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--glass-border);
  margin: var(--space-4) calc(-1 * var(--space-6)) calc(-1 * var(--space-6));
  background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.05));
  border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
}

/* Card Image */
.card-img-top {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4);
}

.card-img-bottom {
  width: 100%;
  height: auto;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  margin: var(--space-4) calc(-1 * var(--space-6)) calc(-1 * var(--space-6));
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  line-height: var(--leading-normal);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  transition: var(--transition-all);
  position: relative;
  overflow: hidden;
  text-transform: none;
  letter-spacing: var(--tracking-normal);
}

.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;
  z-index: 1;
}

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

.btn > * {
  position: relative;
  z-index: 2;
}

/* Button Sizes */
.btn-xs {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-xl);
}

.btn-2xl {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-2xl);
}

/* Button Styles */

/* Primary Button */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-xl), var(--glow-primary);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--shadow-lg);
}

/* Secondary Button */
.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  border-color: transparent;
  box-shadow: var(--glow-secondary);
}

.btn-secondary:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-xl), var(--glow-secondary);
}

/* Glass Button */
.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  color: #1a1a1a;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.btn-glass:hover {
  background: var(--glass-bg-strong);
  border-color: var(--primary-400);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--glass-shadow-strong), var(--glow-primary);
}

/* Gradient Buttons */
.btn-gradient {
  background: var(--gradient-rainbow);
  color: white;
  border: none;
  box-shadow: var(--shadow-lg);
}

.btn-gradient:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-2xl);
}

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

.btn-gradient-secondary {
  background: var(--gradient-secondary);
  color: white;
  border: none;
}

.btn-gradient-success {
  background: var(--gradient-success);
  color: white;
  border: none;
}

.btn-gradient-warning {
  background: var(--gradient-warning);
  color: white;
  border: none;
}

.btn-gradient-danger {
  background: var(--gradient-danger);
  color: white;
  border: none;
}

.btn-gradient-info {
  background: var(--gradient-info);
  color: white;
  border: none;
}

/* Outline Buttons */
.btn-outline-primary {
  border: 2px solid var(--primary-500);
  color: var(--primary-600);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-500);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline-glass {
  border: 2px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  color: #1a1a1a;
}

.btn-outline-glass:hover {
  background: var(--glass-bg-strong);
  border-color: var(--primary-400);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--glass-shadow-strong);
}

/* Button Group */
.btn-group {
  display: inline-flex;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.btn-group .btn {
  border-radius: 0;
  border-right-width: 0;
}

.btn-group .btn:first-child {
  border-top-left-radius: var(--radius-xl);
  border-bottom-left-radius: var(--radius-xl);
}

.btn-group .btn:last-child {
  border-top-right-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
  border-right-width: 1px;
}

/* Floating Action Button */
.btn-fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-xl);
}

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

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
  background: var(--glass-bg) !important;
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: var(--backdrop-2xl);
  -webkit-backdrop-filter: var(--backdrop-2xl);
  box-shadow: var(--shadow-lg);
}

.navbar-brand {
  font-family: var(--font-family-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--primary-600) !important;
  text-decoration: none;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar-brand:hover {
  color: var(--primary-800) !important;
  transform: scale(1.05);
}

.navbar-brand img {
  height: 32px;
  width: auto;
}

/* Navigation Links */
.nav-link {
  color: rgba(26, 26, 26, 0.8) !important;
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left var(--transition-normal);
  z-index: 1;
}

.nav-link:hover::before {
  left: 0;
}

.nav-link:hover {
  color: white !important;
  transform: translateY(-2px);
}

.nav-link > * {
  position: relative;
  z-index: 2;
}

.nav-link.active {
  background: var(--gradient-primary);
  color: white !important;
  box-shadow: var(--glow-primary);
}

/* Navigation Items */
.nav-item {
  position: relative;
}

.nav-item .badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--gradient-danger);
  color: white;
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-weight: var(--font-bold);
}

/* Sidebar Navigation */
.sidebar {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border-right: 1px solid var(--glass-border);
  min-height: calc(100vh - 76px);
  padding: var(--space-6) 0;
  position: relative;
  overflow-y: auto;
  transition: var(--transition-normal);
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
  pointer-events: none;
}

.sidebar .nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  padding: var(--space-3) var(--space-6);
  margin: var(--space-1) var(--space-4);
  border-radius: var(--radius-xl);
  transition: var(--transition-normal);
  position: relative;
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid transparent;
}

.sidebar .nav-link:hover {
  color: white !important;
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(5px);
  box-shadow: var(--shadow-lg);
}

.sidebar .nav-link.active {
  color: white !important;
  background: var(--gradient-primary);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--glow-primary);
}

.sidebar .nav-link i {
  width: 20px;
  text-align: center;
  margin-right: var(--space-3);
  opacity: 0.9;
}

/* Breadcrumbs */
.breadcrumb {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-6);
  margin-bottom: var(--space-6);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(26, 26, 26, 0.7);
  font-size: var(--text-sm);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '/';
  color: rgba(26, 26, 26, 0.5);
  margin-right: var(--space-3);
}

.breadcrumb-item.active {
  color: var(--primary-600);
  font-weight: var(--font-medium);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  position: relative;
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-weight: var(--font-semibold);
  color: #1a1a1a;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.form-control {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: #1a1a1a;
  transition: var(--transition-all);
  font-family: var(--font-family-primary);
}

.form-control:focus {
  background: var(--glass-bg-strong);
  border-color: var(--primary-400);
  outline: none;
  box-shadow: 
    0 0 0 3px rgba(102, 126, 234, 0.1),
    var(--glass-shadow);
  transform: translateY(-1px);
}

.form-control::placeholder {
  color: rgba(26, 26, 26, 0.5);
  font-style: italic;
}

.form-control:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--glass-bg-light);
}

/* Input Sizes */
.form-control-xs {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-lg);
}

.form-control-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
}

.form-control-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
  border-radius: var(--radius-2xl);
}

.form-control-xl {
  padding: var(--space-5) var(--space-7);
  font-size: var(--text-xl);
  border-radius: var(--radius-2xl);
}

/* Input Groups */
.input-group {
  position: relative;
  display: flex;
  align-items: stretch;
  width: 100%;
}

.input-group .form-control {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
  border-radius: 0;
}

.input-group .form-control:first-child {
  border-top-left-radius: var(--radius-xl);
  border-bottom-left-radius: var(--radius-xl);
}

.input-group .form-control:last-child {
  border-top-right-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

.input-group-text {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  color: rgba(26, 26, 26, 0.7);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  display: flex;
  align-items: center;
}

.input-group-text:first-child {
  border-right: 0;
  border-top-left-radius: var(--radius-xl);
  border-bottom-left-radius: var(--radius-xl);
}

.input-group-text:last-child {
  border-left: 0;
  border-top-right-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

/* Form Validation */
.is-invalid .form-control {
  border-color: var(--danger-500);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.is-valid .form-control {
  border-color: var(--success-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.invalid-feedback {
  display: none;
  width: 100%;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--danger-500);
}

.is-invalid .invalid-feedback {
  display: block;
}

.valid-feedback {
  display: none;
  width: 100%;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--success-500);
}

.is-valid .valid-feedback {
  display: block;
}

/* Custom Select */
select.form-control {
  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 var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: var(--space-10);
  appearance: none;
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

.container {
  width: 100%;
  padding-right: var(--space-4);
  padding-left: var(--space-4);
  margin-right: auto;
  margin-left: auto;
}

@media (min-width: 576px) {
  .container { max-width: 540px; }
}

@media (min-width: 768px) {
  .container { max-width: 720px; }
}

@media (min-width: 992px) {
  .container { max-width: 960px; }
}

@media (min-width: 1200px) {
  .container { max-width: 1140px; }
}

@media (min-width: 1400px) {
  .container { max-width: 1320px; }
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-20) 0;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 70%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(168, 85, 247, 0.3) 0%, transparent 50%);
  animation: float 6s ease-in-out infinite;
  z-index: -1;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--space-6);
  background: transparent;
  min-height: calc(100vh - 76px);
}

/* Page Header */
.page-header {
  margin-bottom: var(--space-8);
  padding: var(--space-8);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border-radius: var(--radius-3xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-left: 4px solid var(--primary-500);
}

.page-header h1 {
  color: #1a1a1a;
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

.page-header p {
  color: rgba(26, 26, 26, 0.8);
  font-size: var(--text-lg);
  margin-bottom: 0;
}

/* ==========================================================================
   Grid System
   ========================================================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: calc(-1 * var(--space-2));
  margin-left: calc(-1 * var(--space-2));
}

.col {
  flex: 1 0 0%;
  padding-right: var(--space-2);
  padding-left: var(--space-2);
}

.col-auto {
  flex: 0 0 auto;
  width: auto;
  padding-right: var(--space-2);
  padding-left: var(--space-2);
}

.col-1 { flex: 0 0 auto; width: 8.33333333%; }
.col-2 { flex: 0 0 auto; width: 16.66666667%; }
.col-3 { flex: 0 0 auto; width: 25%; }
.col-4 { flex: 0 0 auto; width: 33.33333333%; }
.col-5 { flex: 0 0 auto; width: 41.66666667%; }
.col-6 { flex: 0 0 auto; width: 50%; }
.col-7 { flex: 0 0 auto; width: 58.33333333%; }
.col-8 { flex: 0 0 auto; width: 66.66666667%; }
.col-9 { flex: 0 0 auto; width: 75%; }
.col-10 { flex: 0 0 auto; width: 83.33333333%; }
.col-11 { flex: 0 0 auto; width: 91.66666667%; }
.col-12 { flex: 0 0 auto; width: 100%; }

/* ==========================================================================
   Animation & Keyframes
   ========================================================================== */

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(2deg);
  }
  66% {
    transform: translateY(-10px) rotate(-2deg);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rotateIn {
  from {
    opacity: 0;
    transform: rotate(-10deg) scale(0.8);
  }
  to {
    opacity: 1;
    transform: rotate(0deg) scale(1);
  }
}

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

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-25%);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-10px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(10px);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
  }
  50% {
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.8);
  }
}

/* Animation Utility Classes */
.animate-slide-up {
  animation: slideInUp 0.6s ease-out;
}

.animate-slide-down {
  animation: slideInDown 0.6s ease-out;
}

.animate-slide-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-right {
  animation: slideInRight 0.6s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.6s ease-out;
}

.animate-rotate-in {
  animation: rotateIn 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce 1s ease-in-out infinite;
}

.animate-shake {
  animation: shake 0.8s ease-in-out;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Animation Delays */
.animate-delay-75 {
  animation-delay: 75ms;
}

.animate-delay-100 {
  animation-delay: 100ms;
}

.animate-delay-150 {
  animation-delay: 150ms;
}

.animate-delay-200 {
  animation-delay: 200ms;
}

.animate-delay-300 {
  animation-delay: 300ms;
}

.animate-delay-500 {
  animation-delay: 500ms;
}

.animate-delay-700 {
  animation-delay: 700ms;
}

.animate-delay-1000 {
  animation-delay: 1000ms;
}

/* ==========================================================================
   Interactive Elements
   ========================================================================== */

/* Hover Effects */
.hover-lift {
  transition: var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.hover-glow {
  transition: var(--transition-normal);
}

.hover-glow:hover {
  box-shadow: var(--glow-primary);
}

.hover-scale {
  transition: var(--transition-normal);
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-rotate {
  transition: var(--transition-normal);
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

.hover-brightness {
  transition: var(--transition-normal);
}

.hover-brightness:hover {
  filter: brightness(1.1);
}

.hover-contrast {
  transition: var(--transition-normal);
}

.hover-contrast:hover {
  filter: contrast(1.1);
}

/* Interactive Cards */
.interactive-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-slow);
}

.interactive-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
              rgba(255, 255, 255, 0.3) 0%, 
              transparent 50%);
  transition: opacity var(--transition-fast);
  opacity: 0;
  pointer-events: none;
}

.interactive-card:hover::after {
  opacity: 1;
}

/* Ripple Effect */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.ripple:active::before {
  width: 300px;
  height: 300px;
}

/* Click Effect */
.click-effect {
  position: relative;
  overflow: hidden;
}

.click-effect::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.click-effect:active::after {
  width: 200px;
  height: 200px;
}

/* ==========================================================================
   Loading States & Micro-interactions
   ========================================================================== */

.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--glass-border);
  border-top: 2px solid var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-right: var(--space-2);
}

.spinner-border {
  border-width: 2px;
}

.spinner-border-sm {
  width: 16px;
  height: 16px;
  border-width: 1px;
}

.spinner-border-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-lg);
}

@keyframes skeleton-loading {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton-text {
  height: 1rem;
  margin-bottom: var(--space-2);
}

.skeleton-text-sm {
  height: 0.75rem;
  width: 75%;
}

.skeleton-title {
  height: 1.5rem;
  width: 50%;
  margin-bottom: var(--space-4);
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-button {
  height: 2.5rem;
  width: 100px;
  border-radius: var(--radius-full);
}

/* Progress Bars */
.progress {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border-radius: var(--radius-full);
  overflow: hidden;
  height: 0.5rem;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
  background: var(--gradient-primary);
  height: 100%;
  transition: width 0.6s ease;
  border-radius: var(--radius-full);
  position: relative;
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-image: linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 75%,
    transparent
  );
  background-size: 1rem 1rem;
  animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
  0% {
    background-position: 1rem 0;
  }
  100% {
    background-position: 0 0;
  }
}

.progress-bar-striped {
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.15) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.15) 50%,
    rgba(255, 255, 255, 0.15) 75%,
    transparent 75%,
    transparent
  );
}

.progress-sm {
  height: 0.25rem;
}

.progress-lg {
  height: 1rem;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Display */
.d-none { display: none !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-block { display: block !important; }
.d-table { display: table !important; }
.d-table-row { display: table-row !important; }
.d-table-cell { display: table-cell !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* Flexbox */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-row-reverse { flex-direction: row-reverse !important; }
.flex-column-reverse { flex-direction: column-reverse !important; }

.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.flex-wrap-reverse { flex-wrap: wrap-reverse !important; }

.justify-content-start { justify-content: flex-start !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-around { justify-content: space-around !important; }
.justify-content-evenly { justify-content: space-evenly !important; }

.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-baseline { align-items: baseline !important; }
.align-items-stretch { align-items: stretch !important; }

.align-content-start { align-content: flex-start !important; }
.align-content-end { align-content: flex-end !important; }
.align-content-center { align-content: center !important; }
.align-content-between { align-content: space-between !important; }
.align-content-around { align-content: space-around !important; }
.align-content-stretch { align-content: stretch !important; }

.align-self-auto { align-self: auto !important; }
.align-self-start { align-self: flex-start !important; }
.align-self-end { align-self: flex-end !important; }
.align-self-center { align-self: center !important; }
.align-self-baseline { align-self: baseline !important; }
.align-self-stretch { align-self: stretch !important; }

.flex-fill { flex: 1 1 auto !important; }
.flex-grow-0 { flex-grow: 0 !important; }
.flex-grow-1 { flex-grow: 1 !important; }
.flex-shrink-0 { flex-shrink: 0 !important; }
.flex-shrink-1 { flex-shrink: 1 !important; }

/* Gap */
.gap-0 { gap: 0 !important; }
.gap-1 { gap: var(--space-1) !important; }
.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.gap-5 { gap: var(--space-5) !important; }
.gap-6 { gap: var(--space-6) !important; }
.gap-8 { gap: var(--space-8) !important; }
.gap-10 { gap: var(--space-10) !important; }
.gap-12 { gap: var(--space-12) !important; }

/* Spacing */
.m-0 { margin: 0 !important; }
.m-1 { margin: var(--space-1) !important; }
.m-2 { margin: var(--space-2) !important; }
.m-3 { margin: var(--space-3) !important; }
.m-4 { margin: var(--space-4) !important; }
.m-5 { margin: var(--space-5) !important; }
.m-6 { margin: var(--space-6) !important; }
.m-8 { margin: var(--space-8) !important; }
.m-10 { margin: var(--space-10) !important; }
.m-12 { margin: var(--space-12) !important; }
.m-auto { margin: auto !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-5 { padding: var(--space-5) !important; }
.p-6 { padding: var(--space-6) !important; }
.p-8 { padding: var(--space-8) !important; }
.p-10 { padding: var(--space-10) !important; }
.p-12 { padding: var(--space-12) !important; }

/* Border Radius */
.rounded-none { border-radius: 0 !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded { border-radius: var(--radius-base) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-2xl) !important; }
.rounded-3xl { border-radius: var(--radius-3xl) !important; }
.rounded-4xl { border-radius: var(--radius-4xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Shadows */
.shadow-none { box-shadow: none !important; }
.shadow-xs { box-shadow: var(--shadow-xs) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-base) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }
.shadow-2xl { box-shadow: var(--shadow-2xl) !important; }
.shadow-inner { box-shadow: var(--shadow-inner) !important; }

/* Position */
.position-static { position: static !important; }
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }
.position-sticky { position: sticky !important; }

/* Overflow */
.overflow-auto { overflow: auto !important; }
.overflow-hidden { overflow: hidden !important; }
.overflow-visible { overflow: visible !important; }
.overflow-scroll { overflow: scroll !important; }

/* Text Alignment */
.text-start { text-align: left !important; }
.text-end { text-align: right !important; }
.text-center { text-align: center !important; }
.text-justify { text-align: justify !important; }

/* Text Transform */
.text-lowercase { text-transform: lowercase !important; }
.text-uppercase { text-transform: uppercase !important; }
.text-capitalize { text-transform: capitalize !important; }

/* Vertical Alignment */
.align-baseline { vertical-align: baseline !important; }
.align-top { vertical-align: top !important; }
.align-middle { vertical-align: middle !important; }
.align-bottom { vertical-align: bottom !important; }
.align-text-top { vertical-align: text-top !important; }
.align-text-bottom { vertical-align: text-bottom !important; }

/* Width & Height */
.w-25 { width: 25% !important; }
.w-50 { width: 50% !important; }
.w-75 { width: 75% !important; }
.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }

.h-25 { height: 25% !important; }
.h-50 { height: 50% !important; }
.h-75 { height: 75% !important; }
.h-100 { height: 100% !important; }
.h-auto { height: auto !important; }

.mw-100 { max-width: 100% !important; }
.mh-100 { max-height: 100% !important; }

/* Min/Max Width & Height */
.min-vw-100 { min-width: 100vw !important; }
.min-vh-100 { min-height: 100vh !important; }
.vw-100 { width: 100vw !important; }
.vh-100 { height: 100vh !important; }

/* ==========================================================================
   Components for ME-QR
   ========================================================================== */

/* QR Code Display */
.qr-display {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-3xl);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.qr-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.qr-display:hover::before {
  transform: translateX(100%);
}

.qr-display:hover {
  transform: scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.qr-display img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

/* QR Type Cards */
.qr-type-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.qr-type-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 1;
}

.qr-type-card:hover::before {
  opacity: 0.1;
}

.qr-type-card:hover {
  transform: translateY(-8px) scale(1.05);
  border-color: var(--primary-400);
  box-shadow: var(--glow-primary);
}

.qr-type-card.active {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--glow-primary);
}

.qr-type-card > * {
  position: relative;
  z-index: 2;
}

.qr-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  font-size: var(--text-2xl);
  color: var(--primary-600);
  transition: var(--transition-normal);
}

.qr-type-card:hover .qr-icon {
  background: var(--glass-bg-strong);
  border-color: var(--primary-400);
  transform: scale(1.1);
}

.qr-type-card.active .qr-icon {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
}

/* Statistics Cards */
.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-3xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card::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 0.5s;
  z-index: 1;
}

.stat-card:hover::before {
  left: 100%;
}

.stat-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  border-color: var(--primary-400);
}

.stat-card > * {
  position: relative;
  z-index: 2;
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-black);
  font-family: var(--font-family-display);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-2);
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: var(--text-lg);
  color: rgba(26, 26, 26, 0.7);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-full);
  color: var(--success-600);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

.stat-trend.up {
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--success-600);
}

.stat-trend.down {
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--danger-600);
}

/* Feature List */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  color: rgba(26, 26, 26, 0.8);
  transition: var(--transition-fast);
  font-size: var(--text-base);
}

.feature-list li:hover {
  color: #1a1a1a;
  transform: translateX(5px);
}

.feature-list li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--gradient-success);
  color: white;
  border-radius: 50%;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  flex-shrink: 0;
}

/* Alerts */
.alert {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
}

.alert::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-500);
}

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

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

.alert-danger::before {
  background: var(--danger-500);
}

.alert-info::before {
  background: var(--info-500);
}

.alert-success {
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.1);
}

.alert-warning {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.1);
}

.alert-danger {
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.1);
}

.alert-info {
  border-color: rgba(6, 182, 212, 0.3);
  background: rgba(6, 182, 212, 0.1);
}

.alert-icon {
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.alert-success .alert-icon {
  color: var(--success-500);
}

.alert-warning .alert-icon {
  color: var(--warning-500);
}

.alert-danger .alert-icon {
  color: var(--danger-500);
}

.alert-info .alert-icon {
  color: var(--info-500);
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.alert-message {
  font-size: var(--text-sm);
  opacity: 0.9;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: 1;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  white-space: nowrap;
}

.badge-sm {
  padding: var(--space-0-5) var(--space-1);
  font-size: 0.625rem;
}

.badge-lg {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

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

.badge-secondary {
  background: var(--gradient-secondary);
  color: white;
}

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

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

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

.badge-info {
  background: var(--gradient-info);
  color: white;
}

.badge-light {
  background: rgba(255, 255, 255, 0.2);
  color: #1a1a1a;
  border: 1px solid var(--glass-border);
}

.badge-dark {
  background: rgba(0, 0, 0, 0.3);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Scrollbar Styling
   ========================================================================== */

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

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--glass-bg-strong);
}

::-webkit-scrollbar-corner {
  background: transparent;
}

/* Firefox Scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Dark Theme Enhancements
   ========================================================================== */

[data-theme="dark"] {
  color-scheme: dark;
}

[data-theme="dark"] body {
  background: var(--bg-dark);
  color: #e5e5e5;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: #f5f5f5;
}

[data-theme="dark"] p {
  color: rgba(229, 229, 229, 0.8);
}

[data-theme="dark"] .card,
[data-theme="dark"] .glass {
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .form-control {
  color: #e5e5e5;
  border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .form-control::placeholder {
  color: rgba(229, 229, 229, 0.5);
}

[data-theme="dark"] .stat-number {
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Mobile First Approach */
@media (max-width: 576px) {
  :root {
    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1rem;
    --space-4: 1.25rem;
    --space-5: 1.5rem;
    --space-6: 1.75rem;
  }
  
  .container {
    padding-right: var(--space-3);
    padding-left: var(--space-3);
  }
  
  .card {
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border-radius: var(--radius-xl);
  }
  
  .btn {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
  }
  
  .navbar-brand {
    font-size: var(--text-xl);
  }
  
  .page-header {
    padding: var(--space-6);
    border-radius: var(--radius-2xl);
  }
  
  .main-content {
    padding: var(--space-4);
  }
  
  .stat-card {
    padding: var(--space-6);
  }
  
  .stat-number {
    font-size: var(--text-4xl);
  }
}

@media (min-width: 576px) and (max-width: 767px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
  }
}

@media (min-width: 768px) {
  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
  }
  
  .btn-group {
    display: inline-flex;
  }
  
  .sidebar {
    position: sticky;
    top: 76px;
    height: calc(100vh - 76px);
  }
}

@media (min-width: 992px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
  
  .hero-section {
    padding: var(--space-24) 0;
  }
  
  .main-content {
    padding: var(--space-8);
  }
}

@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  }
}

/* Landscape orientation adjustments */
@media (max-height: 500px) and (orientation: landscape) {
  .hero-section {
    min-height: 100vh;
    padding: var(--space-8) 0;
  }
  
  .navbar {
    padding: var(--space-2) 0;
  }
  
  .sidebar {
    min-height: calc(100vh - 56px);
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .glass,
  .card,
  .btn-glass {
    backdrop-filter: var(--backdrop-sm);
    -webkit-backdrop-filter: var(--backdrop-sm);
  }
}

/* ==========================================================================
   Accessibility Improvements
   ========================================================================== */

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

/* Focus styles */
.btn:focus,
.form-control:focus,
.nav-link:focus,
.card:focus {
  outline: 2px solid var(--primary-400);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .glass,
  .card,
  .btn {
    border: 2px solid currentColor;
  }
}

/* ==========================================================================
   QR Code Gallery & Components
   ========================================================================== */

.qr-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.qr-card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.qr-card-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.qr-card-glass:hover {
  transform: translateY(-10px) rotateX(5deg);
  box-shadow: 0 20px 50px rgba(31, 38, 135, 0.6);
  border-color: rgba(255, 255, 255, 0.4);
}

.qr-image-container {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
}

.qr-image-container img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.qr-card-glass:hover .qr-image-container img {
  transform: scale(1.1);
}

.qr-status-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.qr-status-badge.active {
  background: rgba(16, 185, 129, 0.9);
  color: var(--white);
}

.qr-status-badge.expired {
  background: rgba(239, 68, 68, 0.9);
  color: var(--white);
}

.qr-card-content {
  padding: var(--space-4);
  position: relative;
  z-index: 2;
}

.qr-title {
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.qr-meta {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: var(--space-3);
}

.qr-actions {
  display: flex;
  gap: 0.5rem;
}

/* Quick Actions Panel */
.quick-actions-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--space-5);
}

.quick-action-item {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-5);
  text-align: center;
  transition: var(--transition);
  text-decoration: none;
  color: var(--white);
  display: block;
  height: 100%;
}

.quick-action-item:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--white);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.quick-action-icon {
  font-size: 3rem;
  margin-bottom: var(--space-3);
  display: block;
  background: linear-gradient(135deg, var(--white), rgba(255, 255, 255, 0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.quick-action-label {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Progress Bars */
.progress-glass {
  height: 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

.progress-glass .progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  border-radius: 20px;
  transition: width 0.6s ease;
  position: relative;
  overflow: hidden;
}

.progress-glass .progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2s infinite;
}

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

/* Activity Timeline */
.activity-timeline {
  position: relative;
  padding-left: var(--space-5);
}

.activity-timeline::before {
  content: '';
  position: absolute;
  left: var(--space-3);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent);
}

.activity-item {
  position: relative;
  padding: var(--space-4) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.activity-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: var(--space-5);
  width: 12px;
  height: 12px;
  background: var(--primary-color);
  border-radius: 50%;
  border: 3px solid var(--glass-bg);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
}

.activity-time {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.activity-description {
  color: var(--white);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.activity-meta {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* Charts Container */
.chart-container-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--space-5);
  position: relative;
}

/* Data Table */
.table-glass {
  width: 100%;
  background: transparent;
  color: var(--white);
}

.table-glass th {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: none;
  padding: var(--space-3);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.table-glass td {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: none;
  padding: var(--space-3);
  vertical-align: middle;
}

.table-glass tr:hover td {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.01);
  transition: var(--transition-fast);
}

/* Dashboard Specific Updates */
.dashboard-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Page Header Glass */
.page-header-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-header-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
  pointer-events: none;
}

.page-header-glass:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(31, 38, 135, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

.page-header-glass > * {
  position: relative;
  z-index: 2;
}

.dashboard-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--space-5);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.dashboard-card > * {
  position: relative;
  z-index: 2;
}

.dashboard-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(31, 38, 135, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

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

.dashboard-stat-number {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, var(--white), rgba(255, 255, 255, 0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.dashboard-stat-label {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dashboard-stat-trend {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: rgba(16, 185, 129, 0.2);
  border-radius: 20px;
  color: var(--success-color);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   Loading Animations & States
   ========================================================================== */

/* Glass Spinner */
.spinner-glass {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top: 3px solid var(--primary-400);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  background: var(--glass-bg);
  box-shadow: var(--glass-shadow);
}

.spinner-glass-sm {
  width: 24px;
  height: 24px;
  border-width: 2px;
}

.spinner-glass-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

.spinner-glass-xl {
  width: 80px;
  height: 80px;
  border-width: 6px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

@keyframes skeleton-loading {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Card Skeleton */
.skeleton-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow-light);
}

.skeleton-card-header {
  height: 24px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.skeleton-card-content {
  height: 16px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.skeleton-card-content:last-child {
  width: 60%;
}

.skeleton-card-image {
  height: 200px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-xl);
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4);
}

/* Table Skeleton */
.skeleton-table {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.skeleton-table-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 150px;
  gap: var(--space-4);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid var(--glass-border);
}

.skeleton-table-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 150px;
  gap: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.skeleton-table-cell {
  height: 20px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* Progress Bar Glass */
.progress-glass-container {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3);
  position: relative;
  overflow: hidden;
}

.progress-glass-bar {
  background: var(--glass-bg);
  height: 8px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.progress-glass-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.progress-glass-fill::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.4), 
    transparent
  );
  animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.progress-glass-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: rgba(255, 255, 255, 0.9);
}

/* Button Loading States */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.btn-loading.btn-sm::after {
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
}

.btn-loading.btn-lg::after {
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
}

/* Button Glass Overlay */
.btn-glass-overlay {
  position: relative;
  overflow: hidden;
}

.btn-glass-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.3), 
    transparent
  );
  transition: left 0.6s ease;
  z-index: 1;
}

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

/* Page Transition Overlay */
.page-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-xl);
  -webkit-backdrop-filter: var(--backdrop-xl);
  border: 1px solid var(--glass-border);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.page-transition-overlay.active {
  opacity: 1;
  visibility: visible;
}

.page-transition-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

/* Image Placeholder Glass */
.image-placeholder {
  background: var(--glass-bg-light);
  backdrop-filter: var(--backdrop-sm);
  -webkit-backdrop-filter: var(--backdrop-sm);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 200px;
}

.image-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.1), 
    transparent
  );
  animation: image-shimmer 2s infinite;
}

@keyframes image-shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.image-placeholder-icon {
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.3);
  z-index: 2;
}

/* Form Loading Overlay */
.form-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.form-loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.form-loading-content {
  text-align: center;
  color: rgba(255, 255, 255, 0.9);
}

.form-loading-spinner {
  margin-bottom: var(--space-3);
}

/* Data Loading Shimmer */
.data-shimmer-container {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  overflow: hidden;
}

.shimmer-item {
  height: 16px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}

.shimmer-item:last-child {
  width: 80%;
}

/* Mobile Loading Indicators */
@media (max-width: 768px) {
  .spinner-glass {
    width: 32px;
    height: 32px;
    border-width: 2px;
  }
  
  .progress-glass-container {
    padding: var(--space-2);
  }
  
  .progress-glass-bar {
    height: 6px;
  }
  
  .image-placeholder {
    min-height: 150px;
  }
  
  .image-placeholder-icon {
    font-size: 2rem;
  }
  
  .skeleton-card {
    padding: var(--space-4);
  }
  
  .skeleton-card-image {
    height: 150px;
  }
  
  .data-shimmer-container {
    padding: var(--space-4);
  }
  
  .skeleton-table-header,
  .skeleton-table-row {
    grid-template-columns: 1fr 1fr 80px;
    gap: var(--space-2);
    padding: var(--space-3);
  }
  
  .skeleton-table-header div:last-child,
  .skeleton-table-row div:last-child {
    display: none;
  }
}

/* Loading States */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--glass-bg-strong);
  backdrop-filter: var(--backdrop-2xl);
  -webkit-backdrop-filter: var(--backdrop-2xl);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-content {
  text-align: center;
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: var(--backdrop-lg);
  -webkit-backdrop-filter: var(--backdrop-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-3xl);
  padding: var(--space-8);
  box-shadow: var(--glass-shadow-strong);
}

.loading-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  color: rgba(255, 255, 255, 0.9);
}

.loading-message {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-6);
}

/* Performance Optimized Loading */
@media (prefers-reduced-motion: reduce) {
  .skeleton,
  .skeleton-card-header,
  .skeleton-card-content,
  .skeleton-card-image,
  .shimmer-item,
  .skeleton-table-cell {
    animation: none;
    background: rgba(255, 255, 255, 0.1);
  }
  
  .spinner-glass,
  .progress-glass-fill::before {
    animation: none;
  }
  
  .progress-glass-fill {
    transition: none;
  }
}

/* Hardware acceleration for loading animations */
.spinner-glass,
.loading-overlay,
.page-transition-overlay,
.form-loading-overlay {
  transform: translateZ(0);
  will-change: transform;
}

/* Accessibility for loading states */
.loading-content[aria-live] {
  position: relative;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .navbar,
  .sidebar,
  .btn,
  .card,
  .glass,
  .progress,
  .spinner,
  .loading-overlay,
  .page-transition-overlay,
  .form-loading-overlay,
  .skeleton,
  .data-shimmer-container {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .container {
    max-width: none !important;
    padding: 0 !important;
  }
  
  .page-header {
    background: white !important;
    border: 1px solid #ccc !important;
  }
}

/* ==========================================================================
   Performance Optimizations
   ========================================================================== */

/* Hardware acceleration for smooth animations */
.card,
.btn,
.glass,
.hover-lift,
.hover-scale,
.hover-rotate,
.qr-type-card,
.stat-card {
  will-change: transform;
  transform: translateZ(0);
}

/* Optimize backdrop filters for performance */
@media (max-width: 768px) {
  .glass,
  .card,
  .btn-glass,
  .navbar {
    backdrop-filter: var(--backdrop-sm);
    -webkit-backdrop-filter: var(--backdrop-sm);
  }
  
  /* Dashboard Responsive */
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    position: fixed;
    z-index: 1050;
    width: 280px;
    height: 100vh;
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: 1rem;
  }
  
  .page-header {
    padding: 1.5rem;
    text-align: center;
  }
  
  .dashboard-stat-number {
    font-size: 2rem;
  }
  
  .dashboard-stat-label {
    font-size: 0.9rem;
  }
  
  .qr-gallery {
    grid-template-columns: 1fr;
  }
  
  .quick-actions-panel {
    padding: 1.5rem;
  }
  
  .quick-action-item {
    padding: 1.5rem;
  }
  
  .quick-action-icon {
    font-size: 2rem;
  }
  
  .activity-timeline {
    padding-left: 1.5rem;
  }
  
  .chart-container-glass {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  .dashboard-stat-number {
    font-size: 1.75rem;
  }
  
  .stat-card {
    padding: 1.5rem;
  }
  
  .qr-card-content {
    padding: 1rem;
  }
  
  .quick-actions-panel .row {
    gap: 1rem;
  }
  
  .page-header h1 {
    font-size: 1.5rem;
  }
  
  .btn-glass {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}

/* ==========================================================================
   Additional Utility Classes
   ========================================================================== */

.backdrop-blur-none { backdrop-filter: var(--backdrop-none); -webkit-backdrop-filter: var(--backdrop-none); }
.backdrop-blur-xs { backdrop-filter: var(--backdrop-xs); -webkit-backdrop-filter: var(--backdrop-xs); }
.backdrop-blur-sm { backdrop-filter: var(--backdrop-sm); -webkit-backdrop-filter: var(--backdrop-sm); }
.backdrop-blur-md { backdrop-filter: var(--backdrop-md); -webkit-backdrop-filter: var(--backdrop-md); }
.backdrop-blur-lg { backdrop-filter: var(--backdrop-lg); -webkit-backdrop-filter: var(--backdrop-lg); }
.backdrop-blur-xl { backdrop-filter: var(--backdrop-xl); -webkit-backdrop-filter: var(--backdrop-xl); }
.backdrop-blur-2xl { backdrop-filter: var(--backdrop-2xl); -webkit-backdrop-filter: var(--backdrop-2xl); }
.backdrop-blur-3xl { backdrop-filter: var(--backdrop-3xl); -webkit-backdrop-filter: var(--backdrop-3xl); }

.border-glass { border: 1px solid var(--glass-border) !important; }
.border-glass-light { border: 1px solid var(--glass-border-light) !important; }
.border-glass-strong { border: 1px solid var(--glass-border-strong) !important; }
.border-glass-primary { border: 1px solid var(--primary-400) !important; }

.bg-glass { background: var(--glass-bg) !important; }
.bg-glass-light { background: var(--glass-bg-light) !important; }
.bg-glass-strong { background: var(--glass-bg-strong) !important; }
.bg-glass-primary { background: rgba(102, 126, 234, 0.15) !important; }

.bg-gradient-primary { background: var(--gradient-primary) !important; }
.bg-gradient-secondary { background: var(--gradient-secondary) !important; }
.bg-gradient-success { background: var(--gradient-success) !important; }
.bg-gradient-warning { background: var(--gradient-warning) !important; }
.bg-gradient-danger { background: var(--gradient-danger) !important; }
.bg-gradient-info { background: var(--gradient-info) !important; }
.bg-gradient-purple { background: var(--gradient-purple) !important; }
.bg-gradient-rainbow { background: var(--gradient-rainbow) !important; }

.text-shadow { text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important; }
.text-shadow-lg { text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2) !important; }
.text-shadow-none { text-shadow: none !important; }

/* Interactive States */
.interactive {
  cursor: pointer;
  transition: var(--transition-normal);
}

.interactive:hover {
  transform: translateY(-2px);
}

.interactive:active {
  transform: translateY(0);
}

/* Smooth Scrolling */
.smooth-scroll {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: #1a1a1a;
}

::-moz-selection {
  background: rgba(102, 126, 234, 0.3);
  color: #1a1a1a;
}

/* Focus Visible */
.focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* ==========================================================================
   Theme Toggle Component
   ========================================================================== */

.theme-toggle {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-md);
  -webkit-backdrop-filter: var(--backdrop-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--glass-shadow);
}

.theme-toggle i {
  font-size: var(--text-xl);
  transition: var(--transition-normal);
}

/* ==========================================================================
   End of Glassmorphism CSS Framework
   ========================================================================== */

/* Additional responsive breakpoints for larger screens */
@media (min-width: 1600px) {
  .container {
    max-width: 1400px;
  }
}

@media (min-width: 1920px) {
  .container {
    max-width: 1600px;
  }
}

/* Custom properties for dynamic theming */
.theme-dynamic {
  background: var(--bg-glass);
  color: var(--text-color);
  transition: all var(--transition-slow);
}

/* Performance optimizations for mobile */
@media (max-width: 768px) {
  .glass-animated,
  .card-elevated,
  .interactive-card {
    transform: none;
  }
  
  .glass-animated:hover,
  .card-elevated:hover {
    transform: none;
  }
}

/* Ensure proper stacking context for modals and overlays */
.modal-backdrop,
.dropdown-menu,
.tooltip {
  z-index: var(--z-modal-backdrop);
}

.modal,
.popover {
  z-index: var(--z-modal);
}

.tooltip {
  z-index: var(--z-tooltip);
}

/* ==========================================================================
   Enhanced Glassmorphism Effects for Homepage Redesign
   ========================================================================== */

/* Hero Section Enhancements */
.hero-section {
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-visual {
    position: relative;
}

.qr-showcase {
    max-width: 400px;
    margin: 0 auto;
}

.qr-placeholder {
    padding: 2rem;
}

/* Floating Stats Animation */
.floating-stats {
    position: absolute;
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-card {
    min-width: 150px;
    text-align: center;
}

/* Enhanced Glass Cards */
.glass-card-enhanced {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-xl);
    box-shadow: 
        0 8px 32px rgba(31, 38, 135, 0.37),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-card-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg, 
        rgba(255, 255, 255, 0.2) 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        transparent 100%
    );
    pointer-events: none;
    z-index: 1;
}

.glass-card-enhanced > * {
    position: relative;
    z-index: 2;
}

.glass-card-enhanced:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 20px 60px rgba(31, 38, 135, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Enhanced Navigation */
.glass-navbar {
    background: rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 4px 30px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.glass-navbar.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    box-shadow: 
        0 4px 30px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Enhanced Button Styles */
.glass-button {
    background: rgba(79, 70, 229, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(79, 70, 229, 0.3);
    color: var(--white);
    font-weight: 600;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-button::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 0.5s;
}

.glass-button:hover::before {
    left: 100%;
}

.glass-button:hover {
    background: rgba(79, 70, 229, 0.3);
    border-color: rgba(79, 70, 229, 0.5);
    transform: translateY(-2px);
    box-shadow: 
        0 10px 25px rgba(79, 70, 229, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.glass-button:active {
    transform: translateY(0);
}

/* Section Badges */
.section-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-xl);
    color: var(--white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Enhanced QR Type Cards */
.qr-type-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.qr-type-card:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 15px 35px rgba(31, 38, 135, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Enhanced Feature Items */
.feature-item {
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-item:hover {
    transform: translateX(10px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 10px 30px rgba(31, 38, 135, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Enhanced Pricing Cards */
.pricing-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-card.popular {
    border-color: rgba(79, 70, 229, 0.5);
    box-shadow: 
        0 15px 35px rgba(79, 70, 229, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.pricing-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 20px 60px rgba(31, 38, 135, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Popular Badge */
.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 
        0 4px 15px rgba(79, 70, 229, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* CTA Section */
.cta-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        45deg, 
        rgba(79, 70, 229, 0.1) 0%, 
        rgba(67, 56, 202, 0.1) 100%
    );
    pointer-events: none;
}

/* Footer Enhancements */
footer .glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-2xl);
}

.footer-brand h4 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Animation Classes */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-slide-up {
    animation: slideInUp 0.6s ease-out;
}

.animate-slide-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-fade-scale {
    animation: fadeInScale 0.6s ease-out;
}

/* Scroll-triggered animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.scroll-animate.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .floating-stats {
        position: static;
        transform: none;
        flex-direction: row;
        justify-content: center;
        margin-top: 2rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .stat-card {
        min-width: 120px;
        padding: 1rem;
    }
    
    .hero-section {
        padding: 100px 0 60px;
    }
    
    .glass-card-enhanced {
        margin-bottom: 1rem;
    }
    
    .pricing-card.popular {
        transform: none;
        margin-bottom: 2rem;
    }
    
    .pricing-card:hover {
        transform: translateY(-5px);
    }
}

@media (max-width: 576px) {
    .display-3 {
        font-size: 2.5rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .display-4 {
        font-size: 1.875rem;
    }
    
    .glass-button {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .section-badge {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

/* Smooth transitions for theme switching */
* {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}