/* ========================================
   Animations - OpenNana Prompt Gallery
   ======================================== */

/* ========================
   KEYFRAMES
   ======================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

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

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: var(--shadow-glow);
    }

    50% {
        box-shadow: var(--shadow-glow-lg);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

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

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* ========================
   ANIMATION CLASSES
   ======================== */

.animate-fadeIn {
    animation: fadeIn var(--transition-slow) ease forwards;
}

.animate-fadeInUp {
    animation: fadeInUp var(--transition-slow) ease forwards;
}

.animate-fadeInDown {
    animation: fadeInDown var(--transition-slow) ease forwards;
}

.animate-scaleIn {
    animation: scaleIn var(--transition-slow) ease forwards;
}

.animate-slideInRight {
    animation: slideInRight var(--transition-slow) ease forwards;
}

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

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-bounce {
    animation: bounce 1s ease infinite;
}

/* ========================
   STAGGER ANIMATIONS
   ======================== */

.stagger-children>* {
    opacity: 0;
    animation: fadeInUp var(--transition-slow) ease forwards;
}

.stagger-children>*:nth-child(1) {
    animation-delay: 0ms;
}

.stagger-children>*:nth-child(2) {
    animation-delay: 50ms;
}

.stagger-children>*:nth-child(3) {
    animation-delay: 100ms;
}

.stagger-children>*:nth-child(4) {
    animation-delay: 150ms;
}

.stagger-children>*:nth-child(5) {
    animation-delay: 200ms;
}

.stagger-children>*:nth-child(6) {
    animation-delay: 250ms;
}

.stagger-children>*:nth-child(7) {
    animation-delay: 300ms;
}

.stagger-children>*:nth-child(8) {
    animation-delay: 350ms;
}

.stagger-children>*:nth-child(9) {
    animation-delay: 400ms;
}

.stagger-children>*:nth-child(10) {
    animation-delay: 450ms;
}

/* ========================
   SKELETON LOADING
   ======================== */

.skeleton {
    background: linear-gradient(90deg,
            var(--color-bg-tertiary) 25%,
            var(--color-bg-secondary) 50%,
            var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton--text {
    height: 1em;
    margin-bottom: var(--space-2);
}

.skeleton--title {
    height: 1.5em;
    width: 70%;
}

.skeleton--image {
    aspect-ratio: 1 / 1;
}

.skeleton--button {
    height: 40px;
    width: 120px;
}

/* ========================
   HOVER EFFECTS
   ======================== */

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.hover-glow {
    transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
}

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-brightness {
    transition: filter var(--transition-base);
}

.hover-brightness:hover {
    filter: brightness(1.1);
}

/* ========================
   SCROLL ANIMATIONS
   ======================== */

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slower), transform var(--transition-slower);
}

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

/* ========================
   LOADING SPINNER
   ======================== */

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-glass-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner--sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

.spinner--lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* ========================
   TOAST ANIMATIONS
   ======================== */

.toast-enter {
    animation: slideInRight var(--transition-base) ease forwards;
}

.toast-exit {
    animation: fadeIn var(--transition-base) ease reverse forwards;
}

/* ========================
   REDUCED MOTION
   ======================== */

@media (prefers-reduced-motion: reduce) {

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

    .skeleton {
        animation: none;
        background: var(--color-bg-tertiary);
    }
}