/* Modern UI Design System - Chicken Road Game */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Modern Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --secondary-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --accent-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --success-gradient: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
  --danger-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  
  /* Solid Colors */
  --primary: #667eea;
  --secondary: #4facfe;
  --accent: #fa709a;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  
  /* Background Colors */
  --bg-primary: #0a0e27;
  --bg-secondary: #1a1f3a;
  --bg-tertiary: #252b47;
  --bg-glass: rgba(26, 31, 58, 0.8);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #718096;
  
  /* Border & Shadow */
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(102, 126, 234, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(250, 112, 154, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(79, 172, 254, 0.15) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(118, 75, 162, 0.15) 0px, transparent 50%);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Modern Glass Effect */
.glass-modern {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
}

/* Gradient Backgrounds */
.gradient-primary {
  background: var(--primary-gradient);
}

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

.gradient-accent {
  background: var(--accent-gradient);
}

/* Modern Buttons */
.btn-modern {
  position: relative;
  padding: 0.875rem 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-md);
}

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

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

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

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

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

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

.btn-accent {
  background: var(--accent-gradient);
  color: white;
}

/* Modern Cards */
.card-modern {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.card-modern:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(102, 126, 234, 0.3);
}

/* Input Fields */
.input-modern {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.input-modern:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-modern::placeholder {
  color: var(--text-muted);
}

/* Badges */
.badge-modern {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-info {
  background: rgba(59, 130, 246, 0.2);
  color: #3b82f6;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

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

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

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

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.glow-effect {
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-gradient);
}

/* Bottom Navigation */
.bottom-nav-modern {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 0.75rem 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.nav-item-modern {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.nav-item-modern i {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
  transition: all var(--transition-base);
}

.nav-item-modern span {
  font-size: 0.7rem;
  font-weight: 500;
}

.nav-item-modern.active,
.nav-item-modern:hover {
  color: var(--primary);
  background: rgba(102, 126, 234, 0.1);
}

.nav-item-modern.active::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 0 0 var(--radius-full) var(--radius-full);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
  }
  
  .btn-modern {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
}

/* Loading States */
.loading-shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 100%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* Particle Background */
.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}