:root {
    /* Colors */
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F9FA;
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    --color-accent: #000000;
    --color-border: #E5E5E5;
    --color-white: #FFFFFF;

    /* Functional Colors */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;

    /* Typography */
    --font-family-primary: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);

    /* Transitions */
    --transition-fast: 0.2s 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);

    /* Animation Constants */
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
}

/* Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

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

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animation Utilities */
.animate-fade-up {
    animation: fadeInUp 0.6s var(--ease-out-expo) forwards;
}

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

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

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

/* Scroll Reveal Class (handled by JS) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}