/* ============================================
   Animations
   I Pericoli dell'Intelligenza Artificiale
   ============================================ */

/* === Reveal Animations === */

/* Fade In */
.reveal-fade {
    opacity: 0;
    animation: revealFade var(--duration-slower) var(--ease-out) forwards;
}

@keyframes revealFade {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Slide Up */
.reveal-slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: revealSlideUp var(--duration-slower) var(--ease-out) forwards;
}

@keyframes revealSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide In from Left */
.reveal-slide-left {
    opacity: 0;
    transform: translateX(-30px);
    animation: revealSlideLeft var(--duration-slower) var(--ease-out) forwards;
}

@keyframes revealSlideLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale In */
.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    animation: revealScale var(--duration-slower) var(--ease-out) forwards;
}

@keyframes revealScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* === Scroll-Triggered Animations === */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

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

/* Staggered children */
.scroll-reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out);
}

.scroll-reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.scroll-reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 50ms; }
.scroll-reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 100ms; }
.scroll-reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 150ms; }
.scroll-reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 200ms; }
.scroll-reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 250ms; }

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

/* === Hover Effects === */

/* Lift effect */
.hover-lift {
    transition: transform var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
}

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

/* Glow effect */
.hover-glow {
    transition: box-shadow var(--duration-normal) var(--ease-out);
}

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

/* === Loading States === */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-secondary) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
}

@keyframes skeleton {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* === Pulse Animation === */
.pulse {
    animation: pulse 2s var(--ease-in-out) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* === Text Animations === */

/* Typewriter effect (for special headings) */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--color-accent);
    white-space: nowrap;
    animation:
        typing 3s steps(40, end),
        blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--color-accent);
    }
}

/* === Page Transitions === */
.page-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.page-exit {
    opacity: 1;
}

.page-exit-active {
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

/* === Reduced Motion === */
@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;
    }

    .reveal-fade,
    .reveal-slide-up,
    .reveal-slide-left,
    .reveal-scale,
    .scroll-reveal {
        opacity: 1;
        transform: none;
    }
}

/* === SVG Animations === */
.svg-draw path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: svgDraw 2s var(--ease-out) forwards;
}

@keyframes svgDraw {
    to {
        stroke-dashoffset: 0;
    }
}

/* Fade in SVG elements */
.svg-fade-in > * {
    opacity: 0;
    animation: svgFadeIn 0.5s var(--ease-out) forwards;
}

.svg-fade-in > *:nth-child(1) { animation-delay: 0.1s; }
.svg-fade-in > *:nth-child(2) { animation-delay: 0.2s; }
.svg-fade-in > *:nth-child(3) { animation-delay: 0.3s; }
.svg-fade-in > *:nth-child(4) { animation-delay: 0.4s; }
.svg-fade-in > *:nth-child(5) { animation-delay: 0.5s; }

@keyframes svgFadeIn {
    to {
        opacity: 1;
    }
}

/* === Interactive Elements === */
.interactive-hover {
    transition: all var(--duration-normal) var(--ease-out);
    cursor: pointer;
}

.interactive-hover:hover {
    fill: var(--color-accent);
    transform: scale(1.05);
}

/* === Attention Indicators === */
.attention-pulse {
    position: relative;
}

.attention-pulse::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--color-accent);
    border-radius: inherit;
    opacity: 0;
    animation: attentionPulse 2s var(--ease-out) infinite;
}

@keyframes attentionPulse {
    0% {
        opacity: 0.8;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(1.1);
    }
}