:root {
    /* Color Scheme */
    --primary: #0056b3;
    --primary-dark: #003d7a;
    --primary-light: #4a90e2;
    --accent: #00a8ff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f0f7ff;
    --bg-white: #ffffff;
    
    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 150, 0.1);
    --shadow-lg: 0 15px 30px rgba(0, 0, 150, 0.15);
    
    /* Gradients */
    --gradient-blue: linear-gradient(135deg, #0056b3 0%, #00a8ff 100%);
    
    /* Animation Durations */
    --transition-fast: 0.3s;
    --transition-medium: 0.5s;
    --transition-slow: 0.8s;
    
    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 15px;
    --border-radius-lg: 30px;
    
    /* Spacing */
    --space-xs: 5px;
    --space-sm: 10px;
    --space-md: 20px;
    --space-lg: 40px;
    --space-xl: 80px;
}

/* Global Animation Keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

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

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

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

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

/* Utility Classes */
.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 3s ease-in-out infinite;
}

.animate-shimmer {
    position: relative;
    overflow: hidden;
}

.animate-shimmer::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 3s infinite;
}

.fade-in {
    animation: fadeIn 1s ease-out forwards;
}

/* Responsive breakpoints */
/* To be used with media queries */
/* Example: @media (max-width: var(--breakpoint-md)) */
:root {
    --breakpoint-xs: 480px;
    --breakpoint-sm: 768px;
    --breakpoint-md: 992px;
    --breakpoint-lg: 1200px;
}