/* Global Animation & Transition Styles */

/* 1. Core Variables & Settings */
:root {
    --anim-duration-short: 150ms;
    --anim-duration-medium: 300ms;
    --anim-duration-long: 500ms;

    --anim-ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
    --anim-ease-in: cubic-bezier(0.55, 0.055, 0.675, 0.19);
    --anim-ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Keyframe Definitions */

/* Fade In - General purpose appearance */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Slide Up - For content entry, cards, lists */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Scale In - For modals, popups, emphasis */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

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

/* Shimmer - For Skeleton Loaders */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* 3. Utility Classes */

/* Animation Utilities */
.animate-fade-in {
    animation: fadeIn var(--anim-duration-medium) var(--anim-ease-smooth) forwards;
}

.animate-slide-up {
    animation: slideUp var(--anim-duration-medium) var(--anim-ease-out) forwards;
}

.animate-scale-in {
    animation: scaleIn var(--anim-duration-short) var(--anim-ease-out) forwards;
}

/* Delays for staggered animations */
.delay-100 {
    animation-delay: 100ms;
}

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

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

/* Micro-interaction Utilities */
.hover-lift {
    transition: transform var(--anim-duration-short) var(--anim-ease-out),
        box-shadow var(--anim-duration-short) var(--anim-ease-out);
}

.hover-lift:hover {
    transform: translateY(-2px);
}

.hover-scale {
    transition: transform var(--anim-duration-short) var(--anim-ease-out);
}

.hover-scale:hover {
    transform: scale(1.02);
}

.click-press {
    transition: transform 0.1s ease;
}

.click-press:active {
    transform: scale(0.97);
}

/* Skeleton Loader Utility */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #fafafa 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: 4px;
}

/* 4. Accessibility Support */
@media (prefers-reduced-motion: reduce) {

    *,
    ::before,
    ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 5. Scroll Reveal Animation (Apple Style) */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Delays for Scroll Reveal */
.delay-100 {
    transition-delay: 100ms;
}

.delay-200 {
    transition-delay: 200ms;
}

.delay-300 {
    transition-delay: 300ms;
}

.delay-400 {
    transition-delay: 400ms;
}


.delay-500 {
    transition-delay: 500ms;
}

/* Typewriter Animation Styles */
.typewriter-cursor {
    display: inline-block;
    width: 2px;
    background-color: currentColor;
    animation: blink 0.7s infinite;
    margin-left: 2px;
    vertical-align: middle;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}