/* Glass Morphism Design System */
:root {
  /* Primary Colors */
  --primary: #1AB499;
  --primary-light: #2DC9AC;
  --primary-dark: #159380;
  
  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
  
  /* Glass Effect Colors - Light Theme */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.9);
  --glass-shadow: rgba(0, 0, 0, 0.05);
  
  /* Light Theme Colors */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #1AB499 0%, #2DC9AC 100%);
  --gradient-hover: linear-gradient(135deg, #159380 0%, #1AB499 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(26, 180, 153, 0.08) 0%, rgba(45, 201, 172, 0.08) 100%);
  --gradient-bg: linear-gradient(135deg, #f0fdfa 0%, #f0f9ff 50%, #fef3c7 100%);
}

/* Glass Morphism Base */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px var(--glass-shadow);
}

.glass-darker {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px var(--glass-shadow);
}

.glass-lighter {
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

/* Note: Button styles have been moved to buttons.css for consistency */

/* Animations */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(26, 180, 153, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(26, 180, 153, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(26, 180, 153, 0);
  }
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes scan {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

.animate-slide-in {
  animation: slideInRight 0.3s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.2s ease-out;
}

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

.animate-gradient-shift {
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
}

.animate-scan {
  animation: scan 4s linear infinite;
}

/* Email List Item Hover Effects */
.email-item {
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.email-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-subtle);
  transition: left 0.3s ease;
  z-index: -1;
}

.email-item:hover::before {
  left: 0;
}

.email-item:hover {
  transform: translateX(4px);
  border-left-color: var(--primary);
}

/* Background patterns */
.bg-grid-pattern {
  background-image: 
    linear-gradient(to right, #cbd5e1 1px, transparent 1px),
    linear-gradient(to bottom, #cbd5e1 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Selected email state */
.email-item.bg-emerald-50 {
  background-color: rgb(236 253 245) !important;
  border-left-width: 4px !important;
  border-left-color: var(--primary) !important;
}

.email-item.bg-emerald-50::before {
  display: none;
}

/* Icon Button Glass Effect */
.icon-btn-glass {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px var(--glass-shadow);
  transition: all 0.2s ease;
  cursor: pointer;
}

.icon-btn-glass:hover {
  background: var(--bg-primary);
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(26, 180, 153, 0.2);
}

/* Scrollbar Styling */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Unread Badge Animation */
.unread-badge {
  background: var(--gradient-primary);
  color: white;
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  animation: pulse 3s infinite;
}