/* 
 * Motion-Primitives Style Animations
 * Premium, fluid, physics-like animations for vanilla JS projects.
 */

/* 1. Spring-like Button Interactions */
.btn, .btn-primary, .btn-secondary, .btn-danger, .bottom-nav-link, .nav-link, button, .hover-spring {
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), background-color 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    will-change: transform;
}

/* "Squish" effect on active/click */
.btn:active, .btn-primary:active, .btn-secondary:active, .btn-danger:active, .bottom-nav-link:active, .nav-link:active, button:active, .active-squish:active {
    transform: scale(0.95);
}

/* 2. Card Hover Lifts */
.card, .stat-card, .hover-lift {
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
    will-change: transform;
}

.card:hover, .stat-card:hover, .hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
}

/* 3. Base Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 4. Page/Tab Load Transitions (Staggered Fade Up) */
@keyframes fadeUpBlur {
    0% {
        opacity: 0;
        transform: translateY(20px);
        filter: blur(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

.animate-fade-up {
    animation: fadeUpBlur 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    opacity: 0;
}

/* 5. Stagger Delays */
.delay-100 { animation-delay: 100ms; transition-delay: 100ms; }
.delay-150 { animation-delay: 150ms; transition-delay: 150ms; }
.delay-200 { animation-delay: 200ms; transition-delay: 200ms; }
.delay-250 { animation-delay: 250ms; transition-delay: 250ms; }
.delay-300 { animation-delay: 300ms; transition-delay: 300ms; }
.delay-400 { animation-delay: 400ms; transition-delay: 400ms; }
.delay-500 { animation-delay: 500ms; transition-delay: 500ms; }

/* 6. List Item Hover (e.g. Leave history, tables) */
tbody tr {
    transition: background-color 0.2s ease, transform 0.2s ease;
}
tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.02);
    /* Subtle shift */
    transform: translateX(4px);
}

/* 7. Tab Switching Animations */
.tab-entering {
    animation: fadeInTab 0.3s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.tab-exiting {
    animation: fadeOutTab 0.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes fadeInTab {
    from { opacity: 0; transform: translateY(10px); filter: blur(4px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

@keyframes fadeOutTab {
    from { opacity: 1; transform: translateY(0); filter: blur(0); }
    to { opacity: 0; transform: translateY(-10px); filter: blur(4px); }
}